CN108371873B - Desulfurization and denitrification system - Google Patents

Desulfurization and denitrification system Download PDF

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Publication number
CN108371873B
CN108371873B CN201810306234.7A CN201810306234A CN108371873B CN 108371873 B CN108371873 B CN 108371873B CN 201810306234 A CN201810306234 A CN 201810306234A CN 108371873 B CN108371873 B CN 108371873B
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adsorption layer
activated carbon
cavity
adsorption
discharge port
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CN108371873A (en
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魏进超
杨本涛
李俊杰
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Zhongye Changtian International Engineering Co Ltd
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Zhongye Changtian International Engineering Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/206—Organic halogen compounds
    • B01D2257/2064—Chlorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A desulfurization and denitrification system comprises an adsorption tower, a resolving tower, a grading screening machine, a first activated carbon conveyor, a second activated carbon conveyor and a third activated carbon conveyor. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The first active carbon conveyor is connected with a first discharge hole of the classifying screen and a feed inlet of the rear cavity of the adsorption layer. The second active carbon conveyor is connected with a second discharge port of the classifying screen and a feed port of the adsorption layer front cavity. The third activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. The discharge port of the analytic tower is connected with the feed port of the classifying screen classifier. According to the desulfurization and denitrification system, large-particle activated carbon is arranged at the rear part of the activated carbon bed layer in the adsorption tower, and small-particle activated carbon is arranged at the front part of the activated carbon bed layer, so that activated carbon powder can be prevented from being blown out of the bed layer by flue gas, and the purpose of reducing the dust of the flue gas at the outlet can be realized.

Description

Desulfurization and denitrification system
Technical Field
The invention relates to an active carbon method flue gas purification device, which belongs to an active carbon method flue gas purification device suitable for treating atmospheric pollution, in particular to a desulfurization and denitrification system for purifying sintering flue gas, and relates to the field of environmental protection.
Background
For industrial flue gas, especially sintering machine flue gas in the steel industry, it is desirable to employ desulfurization and denitrification apparatuses and processes including activated carbon adsorption towers and analytical towers. In a desulfurization and denitrification apparatus including an activated carbon adsorption tower for adsorbing pollutants including sulfur oxides, nitrogen oxides and dioxins from sintering flue gas or exhaust gas (particularly sintering flue gas of a sintering machine in the iron and steel industry) and a desorption tower for thermal regeneration of activated carbon.
The active carbon desulfurization has the advantages of high desulfurization rate, capability of simultaneously realizing denitration, dioxin removal, dust removal, no waste water and waste residue generation and the like, and is a flue gas purification method with great prospect. The activated carbon can be regenerated at high temperature, and sulfur oxides, nitrogen oxides, dioxin and other pollutants adsorbed on the activated carbon are rapidly resolved or decomposed (sulfur dioxide is resolved, and nitrogen oxides and dioxin are decomposed) at the temperature higher than 350 ℃. And as the temperature increases, the regeneration rate of the activated carbon further increases and the regeneration time shortens, preferably the regeneration temperature of the activated carbon in the desorption column is generally controlled to be about 430 c, so that the desired desorption temperature (or regeneration temperature) is, for example, in the range of 390-450 c, more preferably in the range of 400-440 c.
The function of the analytic tower is to adsorb SO from the activated carbon 2 Releasing, decomposing dioxin by over 80% at 400 deg.C and a certain residence time, cooling, sieving and reusing the activated carbon. Released SO 2 Can prepare sulfuric acid, etc., and the resolved active carbon is sent to an adsorption tower through a conveying device to be reused for adsorbing SO2 and NO X Etc.
In the adsorption tower and the analysis tower, NOX and ammonia react with each other in SCR, SNCR and the like, thereby removing NO X . The dust is adsorbed by the active carbon when passing through the adsorption tower, the vibrating screen at the bottom end of the analysis tower is separated, and the active carbon powder below the screen is sent to an ash bin and then can be sent to a blast furnace or sintered for use as fuel.
After the flue gas passes through the activated carbon bed layer, the dust at the flue gas outlet can be controlled at 30mg/m 3 In the process, the part of dust is mainly formed by fine particles carried in original flue gas and activated carbon powder newly carried by the flue gas when the flue gas passes through an activated carbon bed. Dust carried in the flue gas of the flue gas outlet seriously affects the surrounding environment, and causes the pollution of the atmosphere and particles.
In addition, dust is adsorbed by the activated carbon when passing through the adsorption tower, a vibrating screen at the bottom end of the analysis tower is separated, the screened activated carbon powder is sent to an ash bin, and qualified activated carbon left at the upper part of the screen is recycled. The screen mesh commonly used at present is in the form of square holes, and the side length a of the screen mesh is determined according to screening requirements and is generally about 1.2 mm. However, for similar dimensions The activated carbon in the form of tablet is also regarded as a qualified product by sieving with the sieve. The tablet-shaped active carbon has low wear-resistant and compression-resistant strength, and is easy to break into fragments after entering a flue gas purification system, so that on one hand, the resistance of the flue gas purification system is high, and the running cost of the system is increased; on the other hand also increase the high-temperature combustion wind of the activated carbonThe danger is that dust in the export flue gas mainly comprises the newly entrained active carbon powder when the partly fine particles and the flue gas that carry in the original flue gas pass through the active carbon bed layer simultaneously, and active carbon bed layer powder is many also can lead to the flue gas export dust to increase, influences the surrounding environment, causes atmospheric pollution.
In addition, the prior art activated carbon discharge device includes a round roll feeder and a feed rotary valve, as shown in fig. 12.
Firstly, for the round roller feeder, in the working process, activated carbon moves downwards under the control of the round roller feeder under the action of gravity, the moving speed of the activated carbon is determined by different rotating speeds of the round roller feeder, the activated carbon discharged by the round roller feeder enters a rotary feeding valve to be discharged and then enters conveying equipment for recycling, and the main function of the rotary feeding valve is to keep the sealing of an adsorption tower while discharging, so that harmful gas in the adsorption tower is not leaked into the air.
Because the flue gas contains a certain amount of water vapor and dust, the activated carbon can generate a small amount of bonding phenomenon in the adsorption process, and a block is formed to block the feed opening, as shown in fig. 13. If the blanking hole is seriously blocked, activated carbon cannot continuously move, so that the activated carbon is saturated in adsorption and loses the purifying effect, and even the activated carbon bed layer is high in temperature due to heat accumulation of the activated carbon, so that great potential safety hazards exist. The current treatment method is to manually remove the blocks after the system is shut down. In addition, the round roll feeder may occur when it malfunctions during the production process, such as: and the leakage condition when the smoke pressure changes, the material cannot be controlled when the vehicle is stopped, and the like. In addition, the number of the round roller feeders is large (only one of the round roller feeders has a fault, the whole large-scale device is stopped), the manufacturing cost is high, and the maintenance and the overhaul are difficult, so that a certain limit is brought to the development of the activated carbon technology.
Secondly, with the prior art feed rotary valves, the following problems exist: for the transportation of fragile particles such as desulfurization and denitrification activated carbon, a rotary valve is used on one hand to ensure the air tightness of a tower body and on the other hand to realize the nondestructive transportation of materials, but if a transportation medium is sheared due to the rotation of blades in the rotary valve transportation process, the operation cost of a system is increased, as shown in fig. 12. Meanwhile, the shearing phenomenon can cause abrasion of the valve body, the air tightness is poor, and the service life is shortened. Especially when the feed inlet is full of material, the valve core is rotated, and the shearing action of the blades and the valve shell on the conveying medium is more obvious. For large adsorption towers, which typically have a height of about 20 meters, the round roll feeder or rotary valve fails during production, causing significant losses for continuous operation of the process, because the adsorption towers are filled with several tons of activated carbon, the manual removal and repair or reinstallation is quite difficult, and the impact and losses caused by downtime are inconceivable.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a desulfurization and denitrification system, wherein large-particle activated carbon is arranged at the rear part of an activated carbon bed layer in an adsorption tower along the flow direction of flue gas, small-particle activated carbon is arranged at the front part of the activated carbon bed layer, when the flue gas passes through the small-particle activated carbon bed layer, part of carbon powder is entrained by the flue gas, but the part of carbon powder can be removed when passing through the large-particle activated carbon bed layer, and meanwhile, the dust of the large-particle activated carbon is less, so that the activated carbon powder can be prevented from being blown out of the bed layer by the flue gas, and the aim of reducing the dust of the flue gas at an outlet can be realized.
According to a first embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower, a resolving tower, a grading screening machine, a first activated carbon conveyor, a second activated carbon conveyor and a third activated carbon conveyor. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The classifying screen grader comprises a classifying screen grader feed inlet, a classifying screen grader first discharge outlet and a classifying screen grader second discharge outlet. The first activated carbon conveyor is used for connecting a first discharge hole of the grading screening machine and a feed inlet of the adsorption layer rear cavity. The second activated carbon conveyor is used for connecting a second discharge port of the grading screening machine and a feed port of the adsorption layer front cavity. The third activated carbon conveyor is used for connecting a discharge port of the adsorption tower and a feed port of the analysis tower. The discharge port of the analytic tower is connected with the feed port of the classifying screen classifier (through conveying equipment).
In this application, "connecting" a discharge port of one apparatus to a feed port of another apparatus refers to the manner in which material is transferred by both ends of a conveying apparatus (e.g., conveyor or pipe). For example, material discharged from the discharge port of one apparatus is conveyed by the conveying apparatus to (into) the feed port of another apparatus.
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
Preferably, the classifying screen further includes a third discharge port of the classifying screen.
In the embodiment, the activated carbon resolved in the resolving tower enters a classifying screen to be screened, 3 kinds of activated carbon with particle sizes are screened, the first activated carbon with large particle size is discharged from a first discharge hole of the classifying screen and is conveyed to a rear cavity of an adsorption layer through a first activated carbon conveyor; the second type is small-particle-size activated carbon, and the small-particle-size activated carbon is discharged from a second discharge port of the classifying screen and is conveyed to a front cavity of the adsorption layer through a second activated carbon conveyor; the third is activated carbon powder (activated carbon with the smallest particle size) which is discharged from a third discharge port of the classifying screen and used for other purposes. The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a third activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a third activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a second embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower, an analytic tower, a grading screening machine, a fourth active carbon conveyor, a fifth active carbon conveyor, a first buffer bin and a second buffer bin. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The classifying screen grader comprises a classifying screen grader feed inlet, a classifying screen grader first discharge outlet and a classifying screen grader second discharge outlet. The fourth activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. The first surge bin is arranged below the first discharge hole of the classifying screen grader. The second buffer bin is arranged below a second discharge hole of the classifying screen grader. One end of the fifth activated carbon conveyor is respectively connected with the feed inlet of the front cavity of the adsorption layer and the feed inlet of the rear cavity of the adsorption layer. The other end of the fifth activated carbon conveyor is respectively connected with the discharge port of the first buffer bin and the discharge port of the second buffer bin. The discharge port of the analytic tower is connected with the feed port of the classifying screen classifier (through conveying equipment).
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
Preferably, the classifying screen machine further comprises a third discharge outlet of the extension machine.
In the embodiment, the activated carbon which is resolved in the resolving tower enters a classifying screen to be screened, 3 kinds of activated carbon with particle sizes are screened, the first activated carbon with large particle size is discharged from a first discharge hole of the classifying screen and is stored in a first buffer bin; the second is small-particle-size activated carbon, which is discharged from a second discharge port of the classifying screen and stored in a second buffer bin; the third is activated carbon powder (activated carbon with the smallest particle size) which is discharged from a third discharge port of the classifying screen and used for other purposes. The activated carbon stored in the first buffer bin and the activated carbon stored in the second buffer bin are respectively conveyed to a feed inlet of the front cavity of the adsorption layer or a feed inlet of the rear cavity of the adsorption layer at selective intervals through a fifth activated carbon conveyor according to the requirements of a production process; that is, the fifth activated carbon conveyor keeps the activated carbon stored in the second surge bin stationary (i.e., does not convey) while conveying the activated carbon stored in the first surge bin to the adsorption layer rear chamber; while the fifth activated carbon conveyor is conveying activated carbon stored in the second surge bin, activated carbon stored in the first surge bin remains stationary (i.e., is not being conveyed). The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a third embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower, an analysis tower, a grading screening machine, a fourth active carbon conveyor and a fifth active carbon conveyor. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The classifying screen grader comprises a classifying screen grader feed inlet, a classifying screen grader first discharge outlet and a classifying screen grader second discharge outlet. The fourth activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. One end of the fifth activated carbon conveyor is connected with a discharge port of the resolving tower. The other end of the fifth activated carbon conveyor is connected with a feeding port of the classifying screen. The first discharge hole of the grading screening machine is connected with the feed inlet (through conveying equipment) of the adsorption layer rear cavity. The second discharging hole of the grading screening machine is connected with the front cavity of the adsorption layer (through the conveying equipment).
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
Preferably, the classifying screen machine further comprises a third discharge outlet of the extension machine.
In the embodiment, the activated carbon resolved in the resolving tower is conveyed to a classifying screen through a fifth activated carbon conveyor to be screened, 3 kinds of activated carbon with particle sizes are screened, the first kind of activated carbon with large particle size is discharged from a first discharge hole of the classifying screen and enters a rear cavity of an adsorption layer; the second is small-particle-size activated carbon, which is discharged from a second discharge port of the classifying screen and enters a front cavity of the adsorption layer; the third is activated carbon powder (activated carbon with the smallest particle size) which is discharged from a third discharge port of the classifying screen and used for other purposes. The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a fourth embodiment of the present invention, there is provided a desulfurization and denitrification system.
The system comprises an adsorption tower, an analysis tower, a first activated carbon conveyor, a second activated carbon conveyor, a third activated carbon conveyor, a vibrating screen and a distributing device. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The vibrating screen comprises a vibrating screen feeding hole, a vibrating screen first discharging hole and a vibrating screen second discharging hole. The distributing device comprises a distributing device feeding port, a distributing device first discharging port and a distributing device second discharging port. The discharge hole of the analytic tower is connected with the feed inlet of the vibrating screen. The first discharge hole of the vibrating screen is connected with the feed inlet of the distributing device. The first discharge port of the distributor is connected with the feed inlet of the adsorption layer rear cavity through a first activated carbon conveyor. The second discharge port of the distributing device is connected with the feed inlet of the front cavity of the adsorption layer through a second activated carbon conveyor. The third activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower.
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
In the embodiment, the activated carbon resolved in the resolving tower enters a vibrating screen for first screening, is screened into activated carbon with medium particle size, the first activated carbon is granular activated carbon, is discharged from a first discharge port of the vibrating screen, enters a distributing device for second screening, is screened into activated carbon with 2 particle sizes, and the first activated carbon is large-particle-size activated carbon, is discharged from a first discharge port of the distributing device, and is conveyed to a rear cavity of an adsorption layer through a first activated carbon conveyor; the second type is small-particle-size activated carbon, and the small-particle-size activated carbon is discharged from a second discharge port of the distributing device and is conveyed to the front cavity of the adsorption layer through a second activated carbon conveyor. The second active carbon screened by the vibrating screen is active carbon powder (active carbon with the smallest particle size), and is discharged from a second discharge hole of the vibrating screen for other purposes. The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a third activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a third activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a fifth embodiment of the present invention, there is provided a desulfurization and denitrification system.
The system comprises an adsorption tower, an analysis tower, a fourth active carbon conveyor, a fifth active carbon conveyor, a vibrating screen, a distributing device, a first buffer bin and a second buffer bin. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The vibrating screen comprises a vibrating screen feeding hole, a vibrating screen first discharging hole and a vibrating screen second discharging hole. The distributing device comprises a distributing device feeding port, a distributing device first discharging port and a distributing device second discharging port. The fourth activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. The first buffer bin is arranged below the first discharge hole of the distributing device. The second buffer bin is arranged below the second discharge hole of the distributing device. One end of the fifth activated carbon conveyor is respectively connected with the feed inlet of the front cavity of the adsorption layer and the feed inlet of the rear cavity of the adsorption layer. The other end of the fifth activated carbon conveyor is respectively connected with the discharge port of the first buffer bin and the discharge port of the second buffer bin. The discharge port of the analytic tower is connected with the feed port of the vibrating screen (through conveying equipment).
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
In the embodiment, the activated carbon resolved in the resolving tower enters a vibrating screen for first screening, the first activated carbon is granular activated carbon which is discharged from a first discharge hole of the vibrating screen, enters a distributing device for second screening, the second activated carbon is screened into 2 activated carbon with grain sizes, the first activated carbon is large-grain activated carbon which is discharged from a first discharge hole of the distributing device, and the second activated carbon is stored in a first buffer bin; the second is small-particle-size activated carbon, which is discharged from a second discharge port of the distributor and stored in a second buffer bin. The second active carbon screened by the vibrating screen is active carbon powder (active carbon with the smallest particle size), and is discharged from a second discharge hole of the vibrating screen for other purposes. The activated carbon stored in the first buffer bin and the activated carbon stored in the second buffer bin are respectively conveyed to a feed inlet of the front cavity of the adsorption layer or a feed inlet of the rear cavity of the adsorption layer at selective intervals through a fifth activated carbon conveyor according to the requirements of a production process; that is, the fifth activated carbon conveyor keeps the activated carbon stored in the second surge bin stationary (i.e., does not convey) while conveying the activated carbon stored in the first surge bin to the adsorption layer rear chamber; while the fifth activated carbon conveyor is conveying activated carbon stored in the second surge bin, activated carbon stored in the first surge bin remains stationary (i.e., is not being conveyed). The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a sixth embodiment of the present invention, there is provided a desulfurization and denitrification system.
The system comprises an adsorption tower, an analysis tower, a fourth active carbon conveyor, a fifth active carbon conveyor, a vibrating screen and a distributing device. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The vibrating screen comprises a vibrating screen feeding hole, a vibrating screen first discharging hole and a vibrating screen second discharging hole. The distributing device comprises a distributing device feeding port, a distributing device first discharging port and a distributing device second discharging port. The fourth activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. The discharge port of the analytic tower is connected with the feed port of the vibrating screen. The first discharge port of the vibrating screen is connected with the feed inlet of the distributing device through a fifth activated carbon conveyor. The first discharge port of the distributor is connected with the feed inlet of the adsorption layer rear cavity. The second discharge port of the distributing device is connected with the feed port (through the conveying equipment) of the adsorption layer front cavity.
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
In the embodiment, the activated carbon resolved in the resolving tower enters a vibrating screen for first screening, the first activated carbon is granular activated carbon which is discharged from a first discharge port of the vibrating screen, a fifth activated carbon conveyor is conveyed to a distributing device for second screening, the second activated carbon is screened into activated carbon with 2 particle sizes, the first activated carbon is large-particle-size activated carbon which is discharged from the first discharge port of the distributing device and enters a rear cavity of an adsorption layer; the second is small-particle-size activated carbon, which is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer. The second active carbon screened by the vibrating screen is active carbon powder (active carbon with the smallest particle size), and is discharged from a second discharge hole of the vibrating screen for other purposes. The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation.
According to a seventh embodiment of the present invention, there is provided a desulfurization and denitrification system.
The system comprises an adsorption tower, an analysis tower, a fourth active carbon conveyor, a fifth active carbon conveyor, a vibrating screen and a distributing device. One side of the adsorption tower is provided with a flue gas inlet. The other side of the adsorption tower is provided with a flue gas outlet. An adsorption layer front cavity and an adsorption layer rear cavity are arranged in the adsorption tower. The adsorption layer front cavity is arranged at one side close to the flue gas inlet. The adsorption layer rear cavity is arranged at one side close to the flue gas outlet. The vibrating screen comprises a vibrating screen feeding hole, a vibrating screen first discharging hole and a vibrating screen second discharging hole. The distributing device comprises a distributing device feeding port, a distributing device first discharging port and a distributing device second discharging port. The fourth activated carbon conveyor is connected with the discharge port of the adsorption tower and the feed port of the analysis tower. The fifth activated carbon conveyor is connected with a discharge port of the analytic tower and a feed port of the vibrating screen. The first discharge hole of the vibrating screen is connected with the feed inlet of the distributing device. The first discharge port of the distributor is connected with the feed inlet of the adsorption layer rear cavity. The second discharge port of the distributing device is connected with the feed port (through the conveying equipment) of the adsorption layer front cavity.
Preferably, a porous plate is arranged in the rear cavity of the adsorption layer. The porous plate divides the adsorption layer rear cavity into a plurality of spaces.
Preferably, 1-5 porous plates, preferably 2-4 porous plates, are arranged in the rear cavity of the adsorption layer.
Preferably, a porous plate is arranged between the adsorption layer front cavity and the adsorption layer rear cavity. The adsorption layer front cavity and the adsorption layer rear cavity are separated by a porous plate.
In the present invention, the thickness of the back cavity of the adsorption layer is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the front cavity of the adsorption layer.
The conveying apparatus described herein includes, but is not limited to: conveyors or pipes.
In the embodiment, the activated carbon resolved in the resolving tower is conveyed to a vibrating screen through a fifth activated carbon conveyor to be screened for the first time, the first activated carbon is granular activated carbon which is discharged from a first discharge hole of the vibrating screen, enters a distributing device to be screened for the second time, the second activated carbon is screened to 2 activated carbons with the grain sizes, the first activated carbon is large-grain activated carbon which is discharged from the first discharge hole of the distributing device, and enters a rear cavity of an adsorption layer; the second is small-particle-size activated carbon, which is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer. The second active carbon screened by the vibrating screen is active carbon powder (active carbon with the smallest particle size), and is discharged from a second discharge hole of the vibrating screen for other purposes. The first large-particle-size activated carbon flows in the rear cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation. The second small-particle-size activated carbon flows in the front cavity of the adsorption layer and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to a fourth activated carbon conveyor and conveyed to an analysis tower for circulation.
The principle of the invention is as follows: along the flue gas flow direction, the activated carbon bed rear portion of the activated carbon in the adsorption tower is arranged to the large granule activated carbon, the activated carbon bed front portion is arranged to the small granule activated carbon, when the flue gas passes through the small granule activated carbon bed, partial carbon powder is entrained by the flue gas, but can be partially removed again when passing through the large granule, and simultaneously the dust of the large granule activated carbon is little per se, so that the effect of reducing the outlet flue gas dust can be realized.
A multi-layer vibrating screen (such as a grading screening machine) is arranged at the bottom of the analytic tower, namely, screens with different apertures are arranged in the vibrating screen, so that the activated carbon is screened according to the particle size, then large particles are sent to the rear part of a bed layer by using a conveyor, small particles are sent to the front part of the bed layer, and the minimum particle size (generally less than or equal to 1.2 mm) is discharged. The conveyor can be multiple, so that the respective conveying of different particle sizes is realized; or one, a buffer bin is arranged below the vibrating screen, and activated carbon with different particle diameters is conveyed to different positions of the bed layer according to the time period. Of course, the multi-layer screening device can also be arranged at the top of the adsorption tower.
The activated carbon is discharged outside after being screened (a vibrating screen), the recycled activated carbon enters a device (such as a distributing device) with a grain-size distributing function, large grains are sent to the rear part of a bed layer by using a conveyor, and small grains are sent to the front part of the bed layer. The conveyor can be multiple, so that the respective conveying of different particle sizes is realized; or one, a buffer bin is arranged below the vibrating screen, and activated carbon with different particle diameters is conveyed to different positions of the bed layer according to the time period. Of course, a device with a grain size distribution function (a set of distribution device can be arranged on the original system again, or a bin or a discharging pipeline can have the function) can also be arranged at the top of the adsorption tower.
Preferably, there are one or more blowdown rotary valves in the lower or bottom bin of the adsorption column.
In all desulfurization and denitrification systems of the present application, typically, a screen is mounted on a classifying screen or vibrating screen.
In order to avoid entrapment of the tablet-shaped activated carbon on the screen, the application designs a screen with rectangular or strip-shaped screen holes. The screen can be arranged on the vibrating screen, and active carbon particles meeting the requirements of the desulfurization and denitrification device are screened out.
It is therefore preferred to provide a screen having a rectangular or elongated screen aperture with a length L ≡3D, the rectangular screen aperture having a width a=0.65 h-0.95h (preferably 0.7h-0.9h, more preferably 0.73h-0.85 h), where D is the diameter of the circular cross section of the activated carbon cylinder to be trapped on the screen and h is the minimum of the length of the granular activated carbon cylinder to be trapped on the screen.
In particular, to overcome the prior art problems encountered in desulfurization and denitrification units, it is generally desirable that the minimum length h of the activated carbon cylinder be 1.5mm to 7mm. For example h=2, 4 or 6mm.
D (or)Depending on the specific requirements of the desulfurization and denitrification device. Generally (I)>Preferably 5-9mm, more preferably 5.5-8.5mm, more preferably 6-8mm, e.g. 6.5mm, 7mm or 7.5mm.
The adsorption layer back chamber of the adsorption tower generally has at least 2 activated carbon material chambers.
Preferably, a round roll feeder or discharge round roll (G) is provided at the bottom of each activated carbon material chamber of the adsorption layer rear cavity of the adsorption tower. For the discharge roller (G) described herein, a prior art discharge roller may be used. However, it is preferable that, instead of the round roll feeder or the discharging round roll (G), a novel star-wheel activated carbon discharging device (G) may be used, which includes: the star wheel type active carbon discharging roller is positioned below a discharging hole formed by the front baffle plate and the rear baffle plate at the lower part of the active carbon material chamber and the two side plates; wherein the star wheel type activated carbon discharging roller comprises a round roller and a plurality of blades which are distributed at equal angles or basically equal angles along the circumference of the round roller. More specifically, a novel star-wheel type active carbon discharging roller is used below a discharging hole formed by a front baffle plate and a rear baffle plate which are arranged at the lower part of an active carbon material chamber and two side plates.
The star-wheel type active carbon discharging roller has a star-wheel type configuration or appearance when seen from the cross section of the star-wheel type active carbon discharging roller.
The star wheel type active carbon discharging device mainly comprises a front baffle plate and a rear baffle plate of an active carbon discharging hole, two side plates, blades and a round roller. The front baffle and the rear baffle are fixedly arranged, an activated carbon discharging channel, namely a discharging port, is reserved between the front baffle and the rear baffle, and the discharging port consists of the front baffle, the rear baffle and two side plates. The round roller is arranged at the lower ends of the front baffle and the rear baffle, the blades are uniformly distributed and fixed on the round roller, the round roller is driven by the motor to do rotary motion, and the rotary direction is from the rear baffle to the front baffle. The angle or pitch between the blades cannot be too great and the angle θ between the blades is typically designed to be less than 64 °, for example 12-64 °, preferably 15-60 °, preferably 20-55 °, more preferably 25-50 °, more preferably 30-45 °. A gap or spacing s is designed between the blades and the bottom end of the tailgate. The s is generally from 0.5 to 5mm, preferably from 0.7 to 3mm, preferably from 1 to 2mm.
The radius of the outer circumference of the star wheel type activated carbon discharging roller (or the radius of the outer circumference rotation of the blades on the round roller) is r. r is the radius of the cross section (circle) of the roller (106 a) plus the width of the blade.
Generally, the radius of the cross section (circle) of the roller is 30-120mm, preferably 50-100mm, and the width of the blade is 40-130mm, preferably 60-100mm.
The distance between the center of the round roller and the lower end of the front baffle plate is h, and h is generally larger than r+ (12-30) mm but smaller than r/sin58 degrees, so that the smooth discharging of the activated carbon can be ensured, and the activated carbon can be ensured not to slide down automatically when the round roller is not moving.
In general, in the present application, the cross section of the discharge opening of the star-wheel activated carbon discharge device is square or rectangular, and preferably rectangular (or rectangular) with a length greater than a width. I.e. a rectangle (or rectangle) with a length greater than a width.
Preferably, there are one or more blowdown rotary valves in the lower or bottom bin (H) of the adsorption column.
For the rotary valve described herein, a rotary valve of the prior art may be used. However, it is preferred to use a new rotary valve comprising: an upper feed inlet, a valve core, a blade, a valve shell, a lower discharge outlet, a buffer area positioned in the upper space of the inner cavity of the valve and a flat plate; wherein the buffer area is adjacent to the lower space of the feed inlet and communicated with each other, and the length of the cross section of the buffer area in the horizontal direction is longer than that of the cross section of the feed inlet in the horizontal direction; wherein the flat flitch sets up in the buffer, and the upper end of flat flitch is fixed at the top of buffer, and the cross section of flat flitch in the horizontal direction appears "V" shape.
Preferably, the upper feed opening is rectangular or rectangular in cross-section, and the buffer zone is rectangular or rectangular in cross-section.
Preferably, the length of the cross section of the buffer zone is smaller than the length of the cross section of the blade in the horizontal direction.
Preferably, the flat material plate is formed by splicing two single plates, or the flat material plate is formed by bending a plate into two plate surfaces.
Preferably, the included angle 2α of two single plates or two plate surfaces is less than or equal to 120 °, preferably 2α is less than or equal to 90 °. Thus, α is less than or equal to 60 °, preferably α is less than or equal to 45 °. .
Preferably, the included angle phi between each veneer or each plate surface and the length direction of the buffer zone is more than or equal to 30 degrees, preferably more than or equal to 45 degrees, and more preferably more than or equal to the friction angle of the activated carbon material.
Preferably, the bottoms of the two veneers or the bottoms of the two boards are arc-shaped.
Preferably, the length of the centerline segment between two veneers or panels is equal to or less than the width of the cross-section of the buffer in the horizontal direction.
Obviously, α+Φ=90°.
In general, in this application, the discharge opening of the rotary valve is square or rectangular in cross-section, preferably rectangular (or rectangular) with a length greater than the width. I.e. a rectangle (or rectangle) with a length greater than a width.
In general, the height of the main structure of the adsorption column is 10 to 60m (meter), preferably 12 to 55m (meter), preferably 14 to 50m, preferably 16 to 45m,18 to 40m, preferably 20 to 35m, preferably 22 to 30m. The height of the main structure of the adsorption tower means the height from the inlet to the outlet of the adsorption tower (main structure). The column height of the adsorption column refers to the height from the activated carbon outlet at the bottom of the adsorption column to the activated carbon inlet at the top of the adsorption column, i.e., the height of the main structure of the column.
Typically, the resolving or regenerating column has a column height of typically 8 to 45 meters, preferably 10 to 40 meters, more preferably 12 to 35 meters. The column typically has a length of 6-100 meters 2 Preferably 8-50 meters 2 More preferably 10-30 meters 2 Further preferably 15-20 meters 2 Is a cross-sectional area of the body of the (c).
Compared with the prior art, the desulfurization and denitrification system has the following beneficial technical effects:
1. the adsorption tower is internally divided into an adsorption layer front cavity and an adsorption layer rear cavity, active carbon layers are arranged in the two cavities, the active carbon layers are different in the process of the active carbon in the two active carbon layers, dust in the flue gas can be effectively entrained, and meanwhile, the flue gas is reduced to pass through the active carbon layers and is discharged from a flue gas outlet through the active carbon entrained, so that the content of the flue gas dust at the outlet is effectively reduced; the environment is protected;
2. The thicknesses of the front cavity and the rear cavity of the adsorption layer of the desulfurization and denitrification system can be set according to the actual production process, so that the operability is high;
3 the adsorption layer front cavity and the adsorption layer rear cavity of the desulfurization and denitrification system are separated through the porous plate, so that the active carbon of the two cavities can flow independently, and smooth circulation of flue gas is guaranteed.
4. The utility model provides a hierarchical screening machine and shale shaker of SOx/NOx control system can screen out the active carbon powder that can not be used for the adsorption tower again, can be used for other uses, has reduced the powder volume in getting into the adsorption tower, can effectively reduce the dust content in the flue gas of flue gas exit.
5. The screen mesh with rectangular screen holes is adopted in the vibrating screen, so that bridging phenomenon of tablet active carbon is eliminated, tablet active carbon with low wear-resisting and compressive strength is removed under the screen, fragments and dust are prevented from being generated in the desulfurization and denitrification device, moving resistance of the active carbon is reduced, high-temperature combustion risk of the active carbon in the adsorption tower is reduced, and the high-strength active carbon is recycled in the device.
6. And a special discharging device is adopted, so that the discharging faults of the activated carbon are reduced, and the shutdown and overhaul frequency of the whole device is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a first design of a desulfurization and denitrification system according to the present invention;
FIG. 2 is a schematic diagram of a second design of a desulfurization and denitrification system according to the present invention;
FIG. 3 is a schematic diagram of a third design of a desulfurization and denitrification system according to the present invention;
FIG. 4 is a schematic diagram of a fourth design of a desulfurization and denitrification system according to the present invention;
FIG. 5 is a schematic diagram of a fifth design of a desulfurization and denitrification system according to the present invention;
FIG. 6 is a schematic diagram of a sixth design of a desulfurization and denitrification system according to the present invention;
fig. 7 is a schematic diagram of a seventh design structure of a desulfurization and denitrification system according to the present invention.
Fig. 8 is a schematic structural view of a prior art screen.
Fig. 9 is a schematic structural view of the screen of the present application.
Fig. 10 is a schematic view of tablet-shaped activated carbon.
Fig. 11 is a schematic view of an elongated activated carbon.
Fig. 12 and 13 are schematic views of an activated carbon discharging apparatus (round roll feeder) of the related art.
Fig. 14 is a schematic view of a star-wheel activated carbon discharge device of the present application.
Fig. 15 is a schematic view of a rotary valve F of the present invention.
Fig. 16 and 17 are schematic structural views of a cross section along the M-M line of fig. 15.
Fig. 18 is a schematic structural view of the flat material plate (F07).
Reference numerals:
1: an adsorption tower; 101: an adsorption layer front cavity; 102: an adsorption layer rear cavity; 103: a porous plate; 2: an analytical tower; 3: a classifying screen classifier; 301: a feed inlet of the classifying screen classifier; 302: a first discharge port of the classifying screen classifier; 303: a second discharge port of the classifying screen classifier; 304: a third discharge port of the classifying screen classifier; 4: a first activated carbon conveyor; 5: a second activated carbon conveyor; 6: a third activated carbon conveyor; 7: a fourth activated carbon conveyor; 8: a fifth activated carbon conveyor; 9 or Sc: a vibrating screen; 901: a vibrating screen feed inlet; 902: a first discharge hole of the vibrating screen; 903: a second discharge port of the vibrating screen; 10: a distributing device; 1001: a feed inlet of the distributing device; 1002: a first discharge port of the distributing device; 1003: a second discharge port of the distributor; a: a flue gas inlet; b: a flue gas outlet; AC1: a first surge bin; AC2: and a second surge bin.
AC-c: an activated carbon material chamber; h: discharging hoppers or bottom bins; AC: activated carbon; AC-1: activated carbon blocks (or agglomerates); f: rotating the valve;
g: a round roller feeder, a star-wheel type active carbon discharging device or a star-wheel type active carbon discharging roller; g01: a round roller; g02: a blade; AC-I: a front baffle; AC-II: a rear baffle;
h: the distance between the axial center of the round roller G01 and the lower end of the front baffle AC-I; s: the (gap) spacing between the blades and the bottom end of the tailgate; θ: included angles between adjacent blades G02 on the round roller G01; r: the distance between the outer edge of the blade and the axial center of the round roller G01 (i.e., the radius of the blade with respect to the center of the round roller G01, abbreviated as radius);
f: a feed rotary valve; f01: a valve core; f02: a blade; f03: a valve housing; f04: an upper feed inlet; f05: a lower discharge port; f06 a buffer zone located in the upper space of the valve's inner chamber; f07: a material flattening plate; f0701 or F0702: two single plates of the flat material plate F07 or two plate surfaces of the flat material plate F07.
Alpha: two veneers (F0701, F0702) or 1/2 of the angle between two panels (F0701, F0702).
Φ: the angle between each veneer (F0701 or F0702) or each board surface (F0701 or F0702) and the length direction of the buffer zone (F06).
L1: the length of the cross section of the feed port F04 in the horizontal plane direction; l2: the length of the cross section of the flat material plate F07 in the horizontal plane direction.
Detailed Description
According to a first embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, an analysis tower 2, a grading screening machine 3, a first activated carbon conveyor 4, a second activated carbon conveyor 5 and a third activated carbon conveyor 6. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The first activated carbon conveyor 4 is connected to the first discharge port 302 of the classification screen and the feed port of the adsorbent bed rear chamber 102. The second activated carbon conveyor 5 is connected with the second discharge port 303 of the classification screening machine and the feed port of the adsorption layer front cavity 101. The third activated carbon conveyor 6 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The discharge port of the analytical column 2 is connected with the feed port 301 of the classifying screen.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
Preferably, the classifier 3 further includes a classifier third discharge port 304.
In the embodiment, the activated carbon resolved in the resolving tower 2 enters a classifying screen 3 for screening, and is screened into 3 kinds of activated carbon with particle sizes, wherein the first activated carbon is large-particle-size activated carbon, and the large-particle-size activated carbon is discharged from a first discharge hole 302 of the classifying screen and is conveyed to an adsorption layer rear cavity 102 through a first activated carbon conveyor 4; the second is the activated carbon with small particle size, which is discharged from a second discharge port 303 of the classifying screen and is conveyed to the adsorption layer front cavity 101 by a second activated carbon conveyor 5; the third is activated carbon powder (activated carbon of minimum particle size) which is discharged from the third discharge port 304 of the classifier and used for other purposes. The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the third activated carbon conveyor 6 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the third activated carbon conveyor 6 and conveyed to the analysis tower 2 for circulation.
According to a second embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, an analysis tower 2, a grading screening machine 3, a fourth active carbon conveyor 7, a fifth active carbon conveyor 8, a first buffer bin AC1 and a second buffer bin AC2. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. First surge bin AC1 is disposed below first discharge port 302 of the classifier. A second surge bin AC2 is disposed below the second discharge outlet 303 of the classifier. One end of the fifth activated carbon conveyor 8 is connected with the feed inlet of the adsorption layer front cavity 101 and the feed inlet of the adsorption layer rear cavity 102 respectively. The other end of the fifth activated carbon conveyor 8 is respectively connected with the discharge port of the first buffer bin AC1 and the discharge port of the second buffer bin AC2. The discharge port of the analytical column 2 is connected with the feed port 301 of the classifying screen.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
Preferably, the classifying screen 3 further includes an extension third outlet 304.
In the embodiment, the activated carbon resolved in the resolving tower 2 enters a classifying screen 3 for screening, and is screened into activated carbon with 3 particle sizes, wherein the first activated carbon is activated carbon with large particle size, and the activated carbon is discharged from a first discharge hole 302 of the classifying screen and is stored in a first buffer bin AC 1; the second is small-particle-size activated carbon, which is discharged from a second discharge port 303 of the classifying screen and stored in a second surge bin AC 2; the third is activated carbon powder (activated carbon of minimum particle size) which is discharged from the third discharge port 304 of the classifier and used for other purposes. The activated carbon stored in the first surge bin AC1 and the activated carbon stored in the second surge bin AC2 are respectively conveyed to the feed inlet of the adsorption layer front cavity 101 or the feed inlet of the adsorption layer rear cavity 102 at selective intervals by the fifth activated carbon conveyor 8 according to the requirements of the production process; that is, the fifth activated carbon conveyor 8 keeps the activated carbon stored in the second surge tank AC2 stationary (i.e., does not convey) while conveying the activated carbon stored in the first surge tank AC1 to the adsorption layer rear chamber 102; while the fifth activated carbon conveyor 8 is conveying the activated carbon stored in the second surge bin AC2, the activated carbon stored in the first surge bin AC1 remains stationary (i.e., is not conveyed). The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation.
According to a third embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, a resolving tower 2, a grading screening machine 3, a fourth active carbon conveyor 7 and a fifth active carbon conveyor 8. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. One end of the fifth activated carbon conveyor 8 is connected with a discharge port of the analysis tower 2. The other end of the fifth activated carbon conveyor 8 is connected to the classifier feed inlet 301. The first discharge port 302 of the classifier is connected to the feed port of the adsorbent bed rear chamber 102. The second outlet 303 of the classifying screen is connected with the adsorption layer front cavity 101.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
Preferably, the classifying screen 3 further includes an extension third outlet 304.
In the embodiment, the activated carbon resolved in the resolving tower 2 is conveyed to the classifying screen 3 through a fifth activated carbon conveyor 8 to be screened, the activated carbon with 3 particle sizes is screened, the first activated carbon with large particle size is discharged from a first discharge hole 302 of the classifying screen and enters a rear cavity 102 of an adsorption layer; the second is the activated carbon with small particle size, which is discharged from a second discharge port 303 of the classifying screen and enters the adsorption layer front cavity 101; the third is activated carbon powder (activated carbon of minimum particle size) which is discharged from the third discharge port 304 of the classifier and used for other purposes. The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation.
According to a fourth embodiment of the present invention, there is provided a desulfurization and denitrification system.
The system comprises an adsorption tower 1, a resolving tower 2, a first activated carbon conveyor 4, a second activated carbon conveyor 5, a third activated carbon conveyor 6, a vibrating screen 9 and a distributing device 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The discharge port of the analysis tower 2 is connected with the feeding port 901 of the vibrating screen. The vibrating screen first outlet 902 is connected to the distributor inlet 1001. The first discharge port 1002 of the distributor is connected with the feed port of the adsorption layer rear cavity 102 through the first activated carbon conveyor 4. The second discharge port 1003 of the distributor is connected with the feed port of the adsorption layer front cavity 101 through the second activated carbon conveyor 5. The third activated carbon conveyor 6 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
In the embodiment, the activated carbon resolved in the resolving tower 2 enters a vibrating screen 9 for first screening, the first activated carbon is granular activated carbon, the first activated carbon is discharged from a first discharge hole 902 of the vibrating screen, enters a distributing device 10 for second screening, the second activated carbon is screened into 2 activated carbon with grain size, the first activated carbon is large-grain activated carbon, the first activated carbon is discharged from a first discharge hole 1002 of the distributing device, and is conveyed to a rear cavity 102 of an adsorption layer through a first activated carbon conveyor 4; the second is activated carbon with small particle size, which is discharged from a second discharging hole 1003 of the distributor and is conveyed to the adsorption layer front cavity 101 by a second activated carbon conveyor 5. The second activated carbon sieved by the vibrating screen 9 is activated carbon powder (activated carbon with the smallest particle size) and is discharged from the vibrating screen second discharge port 903 for other purposes. The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the third activated carbon conveyor 6 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the third activated carbon conveyor 6 and conveyed to the analysis tower 2 for circulation.
According to a fifth embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, an analysis tower 2, a fourth active carbon conveyor 7, a fifth active carbon conveyor 8, a vibrating screen 9, a distributing device 10, a first buffer bin AC1 and a second buffer bin AC2. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The first surge bin AC1 is disposed below the first discharge port 1002 of the dispenser. The second surge bin AC2 is disposed below the second discharge port 1003 of the dispenser. One end of the fifth activated carbon conveyor 8 is connected with the feed inlet of the adsorption layer front cavity 101 and the feed inlet of the adsorption layer rear cavity 102 respectively. The other end of the fifth activated carbon conveyor 8 is respectively connected with the discharge port of the first buffer bin AC1 and the discharge port of the second buffer bin AC2. The discharge port of the analytical column 2 is connected with the vibrating screen feed port 901.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
In the embodiment, the activated carbon resolved in the resolving tower 2 enters a vibrating screen 9 for first screening, the first activated carbon is granular activated carbon, the first activated carbon is discharged from a first discharge hole 902 of the vibrating screen, the second activated carbon enters a distributing device 10 for second screening, the first activated carbon is large-particle activated carbon, the first activated carbon is discharged from a first discharge hole 1002 of the distributing device, and the second activated carbon is stored in a first buffer bin AC 1; the second is activated carbon with small particle size, which is discharged from the second discharging port 1003 of the distributor and stored in the second surge bin AC 2. The second activated carbon sieved by the vibrating screen 9 is activated carbon powder (activated carbon with the smallest particle size) and is discharged from the vibrating screen second discharge port 903 for other purposes. The activated carbon stored in the first surge bin AC1 and the activated carbon stored in the second surge bin AC2 are respectively conveyed to the feed inlet of the adsorption layer front cavity 101 or the feed inlet of the adsorption layer rear cavity 102 at selective intervals by the fifth activated carbon conveyor 8 according to the requirements of the production process; that is, the fifth activated carbon conveyor 8 keeps the activated carbon stored in the second surge tank AC2 stationary (i.e., does not convey) while conveying the activated carbon stored in the first surge tank AC1 to the adsorption layer rear chamber 102; while the fifth activated carbon conveyor 8 is conveying the activated carbon stored in the second surge bin AC2, the activated carbon stored in the first surge bin AC1 remains stationary (i.e., is not conveyed). The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation.
According to a sixth embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a fourth active carbon conveyor 7, a fifth active carbon conveyor 8, a vibrating screen 9 and a distributing device 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The discharge port of the analytical column 2 is connected with the vibrating screen feed port 901. The vibrating screen first discharge port 902 is connected with the distributor feed port 1001 through the fifth activated carbon conveyor 8. The first outlet 1002 of the distributor is connected to the inlet of the back chamber 102 of the adsorbent bed. The second outlet 1003 of the distributor is connected with the inlet of the adsorption layer front cavity 101.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
In the embodiment, the activated carbon resolved in the resolving tower 2 enters a vibrating screen 9 to be screened for the first time, the first activated carbon is granular activated carbon, the granular activated carbon is discharged from a first discharge hole 902 of the vibrating screen, a fifth activated carbon conveyor 8 is conveyed to a distributing device 10 to be screened for the second time, the activated carbon with 2 particle sizes is screened, the first activated carbon with large particle size is discharged from a first discharge hole 1002 of the distributing device, and the activated carbon enters a rear cavity 102 of an adsorption layer; the second is activated carbon with small particle size, which is discharged from a second discharging hole 1003 of the distributor and enters the adsorption layer front cavity 101. The second activated carbon sieved by the vibrating screen 9 is activated carbon powder (activated carbon with the smallest particle size) and is discharged from the vibrating screen second discharge port 903 for other purposes. The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation.
According to a seventh embodiment of the present invention, there is provided a desulfurization and denitrification system.
A desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a fourth active carbon conveyor 7, a fifth active carbon conveyor 8, a vibrating screen 9 and a distributing device 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The fifth activated carbon conveyor 8 is connected with the discharge port of the analysis tower 2 and the feeding port 901 of the vibrating screen. The vibrating screen first outlet 902 is connected to the distributor inlet 1001. The first outlet 1002 of the distributor is connected to the inlet of the back chamber 102 of the adsorbent bed. The second outlet 1003 of the distributor is connected with the inlet of the adsorption layer front cavity 101.
Preferably, a porous plate 103 is disposed within the adsorbent rear chamber 102. The porous plate 103 partitions the adsorption layer rear chamber 102 into a plurality of spaces.
Preferably, 1-5 porous plates 103, preferably 2-4 porous plates 103, are arranged in the adsorption layer rear cavity 102.
Preferably, a porous plate 103 is provided between the adsorption layer front chamber 101 and the adsorption layer rear chamber 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103.
In the present invention, the thickness of the adsorption layer rear cavity 102 is 1 to 10 times, preferably 2 to 8 times, more preferably 3 to 5 times the thickness of the adsorption layer front cavity 101.
In the embodiment, the activated carbon resolved in the resolving tower 2 is conveyed to a vibrating screen 9 through a fifth activated carbon conveyor 8 to be screened for the first time, the first activated carbon is granular activated carbon, the activated carbon is discharged from a first discharge hole 902 of the vibrating screen, enters a distributing device 10 to be screened for the second time, the activated carbon is screened to 2 kinds of activated carbon with the grain size, the first activated carbon is large-grain activated carbon, the activated carbon is discharged from a first discharge hole 1002 of the distributing device, and the activated carbon enters a rear cavity 102 of an adsorption layer; the second is activated carbon with small particle size, which is discharged from a second discharging hole 1003 of the distributor and enters the adsorption layer front cavity 101. The second activated carbon sieved by the vibrating screen 9 is activated carbon powder (activated carbon with the smallest particle size) and is discharged from the vibrating screen second discharge port 903 for other purposes. The first large-particle-size activated carbon flows in the adsorption layer rear cavity 102 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation. The second small-particle-size activated carbon flows in the adsorption layer front cavity 101 and adsorbs pollutants such as sulfur oxides, nitrogen oxides, dioxin and the like in the raw flue gas, and then is discharged to the fourth activated carbon conveyor 7 and conveyed to the analysis tower 2 for circulation.
In all desulfurization and denitrification systems of the present application, a vibrating screen with a screen is generally employed below or downstream of the bottom outlet of the analytical column.
In order to avoid entrapment of the tablet-shaped activated carbon on the screen, the application designs a screen with rectangular or strip-shaped screen holes. The screen can be arranged on the vibrating screen, and active carbon particles meeting the requirements of the desulfurization and denitrification device are screened out.
It is therefore preferred to provide a screen having a rectangular or elongated screen aperture with a length L ≡3D, the rectangular screen aperture having a width a=0.65 h-0.95h (preferably 0.7h-0.9h, more preferably 0.73h-0.85 h), where D is the diameter of the circular cross section of the activated carbon cylinder to be trapped on the screen and h is the minimum of the length of the granular activated carbon cylinder to be trapped on the screen.
In particular, to overcome the prior art problems encountered in desulfurization and denitrification units, it is generally desirable that the minimum length h of the activated carbon cylinder be 1.5mm to 7mm. For example h=2, 4 or 6mm.
D (or)Depending on the specific requirements of the desulfurization and denitrification device. Generally (I)>Preferably 5-9mm, more preferably 5.5-8.5mm, more preferably 6-8mm, e.g. 6.5mm, 7mm or 7.5mm.
Example A
As shown in FIG. 9, the size (screen cut-off size) of the finished activated carbon recycled in the desulfurization and denitrification apparatus is required to beA screen is designed for use in a layer of screen of the vibrating screen 3, wherein the width a and length L of the oblong holes are: 5mm (width a). Times.27 mm (length L). Where D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen. a=0.833 h.
Example B
As shown in FIG. 9, the size (screen cut-off size) of the finished activated carbon recycled in the desulfurization and denitrification apparatus is required to beA screen is designed for use in a layer of screen of the vibrating screen 3, wherein the width a and length L of the oblong holes are: 3mm (width a). Times.27 mm (length L). Where D is the diameter of the circular cross section of the cylinder of granular activated carbon to be retained on the screen. a=0.75 h. The mesh size screen serves to retain the medium size activated carbon.
Example C
As shown in FIG. 9, the size (screen cut-off size) of the finished activated carbon recycled in the desulfurization and denitrification apparatus is required to beA screen is designed for use in a layer of screen of the vibrating screen 3, wherein the width a and length L of the oblong holes are: 1.6mm (width a). Times.16 mm (length L). Where D is the diameter of the circular cross section of the cylinder of granular activated carbon to be retained on the screen. a=0.75 h.
The adsorbent bed back chamber 102 of the adsorption column typically has at least 2 activated carbon pockets AC-c.
Preferably, there is a round roll feeder or discharge round roll G at the bottom of each activated carbon material chamber AC-c of the adsorption column's adsorption layer back chamber 102.
For the round roll feeder or the discharging round roll G described herein, a round roll feeder or a discharging round roll G in the related art may be used, as shown in fig. 12 and 13. However, it is preferable that a new star-wheel type activated carbon discharging device G is used instead of the round roll feeder or the discharging round roll G, as shown in fig. 14. Novel star-wheel type active carbon discharging device G includes: the device comprises a front baffle plate AC-I and a rear baffle plate AC-II at the lower part of an activated carbon material chamber, and a star wheel type activated carbon discharging roller G positioned below a discharging hole formed by the front baffle plate AC-I and the rear baffle plate AC-II at the lower part of the activated carbon material chamber and two side plates; wherein the star wheel type activated carbon discharging roller G comprises a round roller G01 and a plurality of blades G02 equiangularly or substantially equiangularly distributed along the circumference of the round roller. More specifically, a novel star-wheel type activated carbon discharging roller G is used below a discharging hole formed by a front baffle plate AC-I, a rear baffle plate AC-II and two side plates at the lower part of an activated carbon material chamber. That is, a star wheel type activated carbon discharging roller (G) is installed at the bottom of each of the compartments of the lower activated carbon bed part (a) or below a discharging port formed by a front baffle (AC-I) and a rear baffle (AC-II) of the lower part of the activated carbon compartment and two side plates.
The star-wheel type active carbon discharging roller G has a star-wheel type configuration or appearance when seen from the cross section.
In addition, the method comprises the following steps. The novel star-wheel type active carbon discharging device can also be called star-wheel type active carbon discharging roller G for short, or the star-wheel type active carbon discharging roller G and the star-wheel type active carbon discharging roller can be used interchangeably.
The star wheel type active carbon discharging device mainly comprises a front baffle plate AC-I and a rear baffle plate AC-II of an active carbon discharging hole, two side plates, a blade G02 and a round roller G01. The front baffle and the rear baffle are fixedly arranged, an activated carbon discharging channel, namely a discharging port, is reserved between the front baffle and the rear baffle, and the discharging port consists of a front baffle AC-I, a rear baffle AC-II and two side plates. The round rollers are arranged at the lower ends of the front baffle plate AC-I and the rear baffle plate AC-II, the blades G02 are uniformly distributed and fixed on the round rollers G01, the round rollers G01 are driven by a motor to do rotary motion, and the rotary direction is from the rear baffle plate AC-II to the front baffle plate AC-I. The angle or pitch between the blades G02 cannot be too large, and the angle θ between the blades is generally designed to be smaller than 64 °, for example 12-64 °, preferably 15-60 °, preferably 20-55 °, more preferably 25-50 °, more preferably 30-45 °. A gap or spacing s is designed between the blades and the bottom end of the tailgate. The s is generally from 0.5 to 5mm, preferably from 0.7 to 3mm, preferably from 1 to 2mm.
The radius of the outer circumference of the star-wheel activated carbon discharge roller G (or the radius of the outer circumference rotation of the blade on the round roller) is r. r is the radius of the cross section (circle) of the round roller G01 + the width of the blade G02.
Typically, the radius of the cross section (circle) of the round roller G01 is 30-120mm and the width of the blade G02 is 40-130mm.
The distance between the center of the round roller and the lower end of the front baffle plate is h, and h is generally larger than r+ (12-30) mm but smaller than r/sin58 degrees, so that the smooth discharging of the activated carbon can be ensured, and the activated carbon can be ensured not to slide down automatically when the round roller is not moving.
In general, in the present application, the cross section of the discharge opening of the star-wheel activated carbon discharge device is square or rectangular, and preferably rectangular (or rectangular) with a length greater than a width. I.e. a rectangle (or rectangle) with a length greater than a width.
Preferably, there are one or more blowdown rotary valves F in the lower or bottom bin 107 of the adsorption column.
For the rotary valve F described herein, a rotary valve of the related art may be used, as shown in fig. 12. However, it is preferable to use a new rotary valve F, as shown in FIGS. 15-18. The novel rotary valve F includes: an upper feed port F04, a valve core F01, a blade F02, a valve shell F03, a lower discharge port F05, a buffer zone F06 positioned in the upper space of the inner cavity of the valve and a flat material F07; wherein the buffer zone F06 is adjacent to the lower space of the feed port F04 and communicates with each other, and the length of the cross section of the buffer zone F06 in the horizontal direction is longer than the length of the cross section of the feed port F04 in the horizontal direction; wherein the flat flitch sets up in buffer F06, and the upper end of flat flitch F07 is fixed at buffer F06's top, and flat flitch F07 takes on "V" shape in the cross section of horizontal direction.
Preferably, the upper feed opening F04 is rectangular or rectangular in cross section, while the buffer zone F06 is rectangular or rectangular in cross section.
Preferably, the length of the cross section of the buffer zone F06 is smaller than the length of the cross section of the blade F02 in the horizontal direction.
Preferably, the flat material plate F07 is formed by splicing two single plates (F0701, F0702), or the flat material plate F07 is formed by bending one plate into two plate surfaces (F0701, F0702).
Preferably, the angle 2α of the two veneers (F0701, F0702) or the two panels (F0701, F0702) is less than or equal to 120 °, preferably 2α is less than or equal to 90 °. Thus, α is less than or equal to 60 °, preferably α is less than or equal to 45 °.
Preferably, the included angle phi between each veneer (F0701 or F0702) or each board surface (F0701 or F0702) and the length direction of the buffer zone F06 is more than or equal to 30 degrees, preferably more than or equal to 45 degrees, and more preferably more than or equal to the friction angle of the activated carbon material.
Preferably, the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) are arc-shaped.
Preferably, the length of the centre line segment between the two veneers (F0701, F0702) or the two panels (F0701, F0702) is equal to or smaller than the width of the cross section of the buffer F06 in the horizontal direction.
Obviously, α+Φ=90°.
In general, in the present application, the discharge opening F05 of the novel rotary valve F has a square or rectangular cross section, and preferably has a rectangular shape (or rectangular shape) having a length greater than a width. I.e. a rectangle (or rectangle) with a length greater than a width.
Example 1
As shown in fig. 1, the desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a classification screening machine 3, a first activated carbon conveyor 4, a second activated carbon conveyor 5 and a third activated carbon conveyor 6. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The first activated carbon conveyor 4 is connected to the first discharge port 302 of the classification screen and the feed port of the adsorbent bed rear chamber 102. The second activated carbon conveyor 5 is connected with the second discharge port 303 of the classification screening machine and the feed port of the adsorption layer front cavity 101. The third activated carbon conveyor 6 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The discharge port of the analytical column 2 is connected with the feed port 301 of the classifying screen.
1 porous plate 103 is arranged in the adsorption layer rear cavity 102. The porous plate 103 divides the adsorption layer rear chamber 102 into 2 spaces.
A porous plate 103 is arranged between the adsorption layer front cavity 101 and the adsorption layer rear cavity 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103. The thickness of the back cavity 102 of the adsorption layer is 4 times the thickness of the front cavity 101 of the adsorption layer.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge opening of each of the chambers AC-c is equipped with a round roll feeder G (discharge round roll). The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the first screen and the second screen in the classifier 3 are the screens of example a and example B, respectively.
Example 2
Example 1 was repeated except that. The classifier 3 also includes a classifier third discharge port 304.
Example 3
As shown in fig. 2, the desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a classification screening machine 3, a fourth activated carbon conveyor 7, a fifth activated carbon conveyor 8, a first buffer bin AC1 and a second buffer bin AC2. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. First surge bin AC1 is disposed below first discharge port 302 of the classifier. A second surge bin AC2 is disposed below the second discharge outlet 303 of the classifier. One end of the fifth activated carbon conveyor 8 is connected with the feed inlet of the adsorption layer front cavity 101 and the feed inlet of the adsorption layer rear cavity 102 respectively. The other end of the fifth activated carbon conveyor 8 is respectively connected with the discharge port of the first buffer bin AC1 and the discharge port of the second buffer bin AC2. The discharge port of the analytical column 2 is connected with the feed port 301 of the classifying screen.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the first screen and the second screen in the classifier 3 are the screens of example a and example B, respectively.
Example 4
As shown in fig. 3, the desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a classification screening machine 3, a fourth activated carbon conveyor 7 and a fifth activated carbon conveyor 8. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The classifying screen 3 includes a classifying screen feed inlet 301, a classifying screen first discharge outlet 302, and a classifying screen second discharge outlet 303. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. One end of the fifth activated carbon conveyor 8 is connected with a discharge port of the analysis tower 2. The other end of the fifth activated carbon conveyor 8 is connected to the classifier feed inlet 301. The first discharge port 302 of the classifier is connected to the feed port of the adsorbent bed rear chamber 102. The second outlet 303 of the classifying screen is connected with the adsorption layer front cavity 101.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the first screen and the second screen in the classifier 3 are the screens of example a and example B, respectively.
Example 5
As shown in fig. 4, the desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a first activated carbon conveyor 4, a second activated carbon conveyor 5, a third activated carbon conveyor 6, a vibrating screen 9 and a distributor 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The discharge port of the analysis tower 2 is connected with the feeding port 901 of the vibrating screen. The vibrating screen first outlet 902 is connected to the distributor inlet 1001. The first discharge port 1002 of the distributor is connected with the feed port of the adsorption layer rear cavity 102 through the first activated carbon conveyor 4. The second discharge port 1003 of the distributor is connected with the feed port of the adsorption layer front cavity 101 through the second activated carbon conveyor 5. The third activated carbon conveyor 6 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the vibrating screen 9 is fitted with the screen of example a.
Example 6
As shown in fig. 5, the desulfurization and denitrification system comprises an adsorption tower 1, a resolution tower 2, a fourth activated carbon conveyor 7, a fifth activated carbon conveyor 8, a vibrating screen 9, a distributing device 10, a first buffer bin AC1 and a second buffer bin AC2. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The first surge bin AC1 is disposed below the first discharge port 1002 of the dispenser. The second surge bin AC2 is disposed below the second discharge port 1003 of the dispenser. One end of the fifth activated carbon conveyor 8 is connected with the feed inlet of the adsorption layer front cavity 101 and the feed inlet of the adsorption layer rear cavity 102 respectively. The other end of the fifth activated carbon conveyor 8 is respectively connected with the discharge port of the first buffer bin AC1 and the discharge port of the second buffer bin AC2. The discharge port of the analytical column 2 is connected with the vibrating screen feed port 901.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the vibrating screen 9 is fitted with the screen of example a.
Example 7
As shown in fig. 6, the desulfurization and denitrification system comprises an adsorption tower 1, a desorption tower 2, a fourth activated carbon conveyor 7, a fifth activated carbon conveyor 8, a vibrating screen 9 and a distributing device 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The discharge port of the analytical column 2 is connected with the vibrating screen feed port 901. The vibrating screen first discharge port 902 is connected with the distributor feed port 1001 through the fifth activated carbon conveyor 8. The first outlet 1002 of the distributor is connected to the inlet of the back chamber 102 of the adsorbent bed. The second outlet 1003 of the distributor is connected with the inlet of the adsorption layer front cavity 101.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the vibrating screen 9 is fitted with the screen of example a.
Example 8
As shown in fig. 7, the desulfurization and denitrification system comprises an adsorption tower 1, a desorption tower 2, a fourth activated carbon conveyor 7, a fifth activated carbon conveyor 8, a vibrating screen 9 and a distributing device 10. One side of the adsorption tower 1 is provided with a flue gas inlet A. The other side of the adsorption tower 1 is provided with a flue gas outlet B. An adsorption layer front cavity 101 and an adsorption layer rear cavity 102 are arranged in the adsorption tower 1. The adsorption layer front chamber 101 is arranged on the side close to the flue gas inlet a. The adsorption layer rear chamber 102 is disposed on a side near the flue gas outlet B. The vibrating screen 9 comprises a vibrating screen feed inlet 901, a vibrating screen first discharge outlet 902 and a vibrating screen second discharge outlet 903. The distributor 10 comprises a distributor feed port 1001, a distributor first discharge port 1002, and a distributor second discharge port 1003. The fourth activated carbon conveyor 7 is connected with the discharge port of the adsorption tower 1 and the feed port of the analysis tower 2. The fifth activated carbon conveyor 8 is connected with the discharge port of the analysis tower 2 and the feeding port 901 of the vibrating screen. The vibrating screen first outlet 902 is connected to the distributor inlet 1001. The first outlet 1002 of the distributor is connected to the inlet of the back chamber 102 of the adsorbent bed. The second outlet 1003 of the distributor is connected with the inlet of the adsorption layer front cavity 101.
2 porous plates 103 are arranged in the adsorption layer rear cavity 102. The porous plate 103 divides the adsorption layer rear chamber 102 into 3 spaces. A porous plate 103 is arranged between the adsorption layer front cavity 101 and the adsorption layer rear cavity 102. The adsorption layer front chamber 101 and the adsorption layer rear chamber 102 are partitioned by a porous plate 103. The thickness of the back cavity 102 of the adsorption layer is 6 times the thickness of the front cavity 101 of the adsorption layer.
The adsorption layer rear chamber 102 of the adsorption tower 1 has two activated carbon material chambers AC-c as shown in fig. 12. The discharge port of each of the chambers AC-c is provided with a round roll feeder G. The discharge hole of the discharging hopper or the bottom bin H is provided with a rotary valve F.
Preferably, the vibrating screen 9 is fitted with the screen of example a.
In the embodiment, the vibration sieve provided with the specific screen mesh is used for replacing a common vibration sieve below a discharge hole of the resolving tower 2, so that the phenomenon of bridging of tablet active carbon is eliminated, tablet active carbon with very low wear-resistant and pressure-resistant strength is removed under the sieve, fragments and dust are avoided being generated in a desulfurization and denitrification device, the moving resistance of the active carbon is reduced, the high-temperature combustion risk of the active carbon in the adsorption tower is reduced, the recycling of the high-strength active carbon in the device is realized, the blanking of the vibration sieve is reduced, and the running cost is reduced.
Example 9
Example 1 was repeated except that instead of discharging round rolls G (or round roll feeders), a novel star-wheel activated carbon discharging device was used, as shown in fig. 14. And the bottom of one activated carbon material chamber is provided with 1 material outlet. The discharge opening is formed by a front baffle AC-I and a rear baffle AC-II and two side plates (not shown).
The main structure of the adsorption tower has a height of 21m (meters). The adsorption tower 1 has 2 activated carbon material chambers. Wherein the thickness of the first compartment on the left is 180mm. The thickness of the second chamber on the right is 900mm.
Star wheel type active carbon discharging device includes: the device comprises a front baffle plate AC-I and a rear baffle plate AC-II at the lower part of an activated carbon material chamber, and a star wheel type activated carbon discharging roller G positioned below a discharging hole formed by the front baffle plate AC-I and the rear baffle plate AC-II at the lower part of the activated carbon material chamber and two side plates; wherein the star wheel type activated carbon discharging roller G comprises a round roller G01 and 12 blades G02 distributed along the circumference of the round roller at equal angles (θ=30°).
The star-wheel type active carbon discharging roller G is in a star-wheel type configuration when seen in cross section.
The discharge opening consists of a front baffle plate AC-I, a rear baffle plate AC-II and two side plates. The round rollers are arranged at the lower ends of the front baffle plate AC-I and the rear baffle plate AC-II, the blades G02 are uniformly distributed and fixed on the round rollers G01, the round rollers G01 are driven by a motor to do rotary motion, and the rotary direction is from the rear baffle plate AC-II to the front baffle plate AC-I. The angle θ between the blades G02 is 30 °. A gap or spacing s is designed between the blades and the bottom end of the tailgate. The s is taken to be 2mm.
The radius of the outer circumference of the star-wheel activated carbon discharge roller G (or the radius of the outer circumference rotation of the blade on the round roller) is r. r is the radius of the cross section (circle) of the round roller G01 + the width of the blade G02.
The radius of the cross section (circle) of the round roller G01 was 60mm, and the width of the blade G02 was 100mm.
The distance between the center of the round roller and the lower end of the front baffle plate is h, and h is generally larger than r+ (12-30) mm but smaller than r/sin58 degrees, so that the smooth discharging of the activated carbon can be ensured, and the activated carbon can be ensured not to slide down automatically when the round roller is not moving.
Example 10
Example 2 was repeated except that a novel star-wheel activated carbon discharging device was used instead of the discharging round roller G, as shown in fig. 14. And the bottom of one activated carbon material chamber is provided with 1 material outlet. The discharge opening is formed by a front baffle AC-I and a rear baffle AC-II and two side plates (not shown).
The main structure of the adsorption tower has a height of 21m (meters). The thickness of the first left hand compartment is 160mm. The thickness of the second chamber on the right is 1000mm.
Star wheel type active carbon discharging device includes: the device comprises a front baffle plate AC-I and a rear baffle plate AC-II at the lower part of an activated carbon material chamber, and a star wheel type activated carbon discharging roller G positioned below a discharging hole formed by the front baffle plate AC-I and the rear baffle plate AC-II at the lower part of the activated carbon material chamber and two side plates; wherein the star wheel type activated carbon discharging roller G comprises a round roller G01 and 8 blades G02 distributed along the circumference of the round roller at equal angles (θ=45°).
The star-wheel type active carbon discharging roller G is in a star-wheel type configuration when seen in cross section.
The discharge opening consists of a front baffle plate AC-I, a rear baffle plate AC-II and two side plates. The round rollers are arranged at the lower ends of the front baffle plate AC-I and the rear baffle plate AC-II, the blades G02 are uniformly distributed and fixed on the round rollers G01, the round rollers G01 are driven by a motor to do rotary motion, and the rotary direction is from the rear baffle plate AC-II to the front baffle plate AC-I. The angle θ between the blades G02 is 45 °. A gap or spacing s is designed between the blades and the bottom end of the tailgate. This s is 1mm.
The radius of the outer circumference of the star-wheel type active carbon discharging roller G is r. r is the radius of the cross section (circle) of the round roller G01 + the width of the blade G02.
The radius of the cross section (circle) of the round roller G01 is 90mm, and the width of the blade G02 is 70mm.
The distance between the center of the round roller and the lower end of the front baffle plate is h, and h is generally larger than r+ (12-30) mm but smaller than r/sin58 degrees, so that the smooth discharging of the activated carbon can be ensured, and the activated carbon can be ensured not to slide down automatically when the round roller is not moving.
Example 11
Example 2 was repeated except that instead of the conventional blowdown rotary valve F, a new blowdown rotary valve F was used as shown in fig. 15-18.
The novel rotary valve F includes: the valve comprises an upper feed port F04, a valve core F01, a blade F02, a valve shell F03, a lower discharge port F05, a buffer zone F06 positioned in the upper space of the inner cavity of the valve and a flat material F07. Wherein the buffer zone F06 is adjacent to the lower space of the feed port F04 and communicates with each other, and the length of the cross section of the buffer zone F06 in the horizontal direction is longer than the length of the cross section of the feed port F04 in the horizontal direction; wherein the flat flitch sets up in buffer F06, and the upper end of flat flitch F07 is fixed at buffer F06's top, and flat flitch F07 takes on "V" shape in the cross section of horizontal direction.
The upper feed opening F04 is rectangular in cross section, while the buffer zone F06 is also rectangular in cross section.
The length of the cross section of the buffer zone F06 is smaller than the length of the cross section of the blade F02 in the horizontal direction.
The flat material plate F07 is formed by splicing two single plates (F0701, F0702).
The angle 2 alpha between the two veneers (F0701, F0702) is 90 degrees.
Preferably, the angle Φ between each veneer (F0701 or F0702) or each board (F0701 or F0702) and the length direction of the buffer region F06 is 30 °. Ensure that phi is larger than the friction angle of the activated carbon material.
The bottoms of the two veneers (F0701, F0702) are arc-shaped respectively.
The length of the central line segment between the two veneers (F0701, F0702) or the two panels (F0701, F0702) is slightly smaller than the width of the cross section of the buffer region F06 in the horizontal direction.
α+Φ＝90°。
The radius of rotation of the outer circumference of the blades of the rotary valve is r. r is the radius of the cross section (circle) of the spool F01 + the width of the vane F02.
The radius of the cross section (circle) of the spool F01) is 30mm and the width of the vane F02 is 100mm. I.e. r is 130mm.
The length of the blade F02 is 380mm.
Example 12
Example 10 was repeated except that instead of the conventional blowdown rotary valve F, a new blowdown rotary valve F was used as shown in fig. 15-18.
The rotary valve F includes: the valve comprises an upper feed port F04, a valve core F01, a blade F02, a valve shell F03, a lower discharge port F05, a buffer zone F06 positioned in the upper space of the inner cavity of the valve and a flat material F07. Wherein the buffer zone F06 is adjacent to the lower space of the feed port F04 and communicates with each other, and the length of the cross section of the buffer zone F06 in the horizontal direction is longer than the length of the cross section of the feed port F04 in the horizontal direction; wherein the flat flitch sets up in buffer F06, and the upper end of flat flitch F07 is fixed at buffer F06's top, and flat flitch F07 takes on "V" shape in the cross section of horizontal direction.
The upper feed opening F04 is rectangular in cross section, while the buffer zone F06 is also rectangular in cross section.
The length of the cross section of the buffer zone F06 is smaller than the length of the cross section of the blade F02 in the horizontal direction.
The flat material plate F07 is formed by splicing two single plates (F0701, F0702).
The angle 2 alpha between the two veneers (F0701, F0702) is 90 degrees.
Preferably, the angle Φ between each veneer (F0701 or F0702) or each board (F0701 or F0702) and the length direction of the buffer region F06 is 30 °. Ensure that phi is larger than the friction angle of the activated carbon material.
The bottoms of the two veneers (F0701, F0702) are arc-shaped respectively.
The length of the central line segment between the two veneers (F0701, F0702) or the two panels (F0701, F0702) is slightly smaller than the width of the cross section of the buffer region F06 in the horizontal direction.
α+Φ＝90°。
The radius of rotation of the outer circumference of the blades of the rotary valve is r. r is the radius of the cross section (circle) of the spool F01 + the width of the vane F02.
The radius of the cross section (circle) of the spool F01) is 30mm and the width of the vane F02 is 100mm. I.e. r is 130mm.
The length of the blade F02 is 380mm.

Claims (171)

1. The system comprises an adsorption tower (1), an analysis tower (2), a grading screening machine (3), a first active carbon conveyor (4), a second active carbon conveyor (5) and a third active carbon conveyor (6), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the classifying screen (3) comprises a classifying screen feed inlet (301), a classifying screen first discharge outlet (302) and a classifying screen second discharge outlet (303), and the first activated carbon conveyor (4) is used for connecting the classifying screen first discharge outlet (302) and the feed inlet of the adsorption layer rear cavity (102); the second activated carbon conveyor (5) is used for connecting a second discharge hole (303) of the classifying screen and a feed inlet of the adsorption layer front cavity (101); the third activated carbon conveyor (6) is used for connecting a discharge port of the adsorption tower (1) and a feed port of the analysis tower (2); the discharge port of the analytic tower (2) is connected with the feed port (301) of the classifying screen classifier; the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
2. The system according to claim 1, wherein: the grading screening machine (3) further comprises a third discharge port (304) of the grading screening machine.
3. The system according to claim 1, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
4. A system according to claim 3, characterized in that: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
5. The system according to claim 4, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
6. The system according to claim 1, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
7. The system according to claim 6, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
8. The system according to claim 7, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
9. A system according to any one of claims 1-8, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
10. The system according to claim 9, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
11. The system according to claim 10, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
12. The system according to any one of claims 1-8, 10-11, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c), and a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll is installed at the bottom of each activated carbon chamber (AC-c) or under a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chamber and two side plates.
13. The system according to claim 12, wherein the round roller (G01) is arranged at the lower end of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
14. The system of claim 13, wherein θ is 15-60 °.
15. The system of claim 14, wherein θ is 20-55 °.
16. The system of claim 15, wherein θ is 25-50 °.
17. The system of claim 16, wherein θ is 30-45 °.
18. The system of claim 12, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
19. The system of claim 18, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
20. The system of claim 19, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
21. The system according to any one of claims 1-8, 10-11, 13-20, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
22. The system according to claim 21, wherein the cross section of the upper feed opening (F04) is rectangular or rectangular, while the cross section of the buffer zone (F06) is rectangular or rectangular; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
23. The system according to claim 21, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or the flat stock plate (F07) is formed by bending one plate into two plate surfaces (F0701, F0702), and the included angle 2α of the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is less than or equal to 120 °.
24. The system according to claim 23, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is equal to or greater than 30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
25. A system according to claim 23, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is larger than or equal to the friction angle of the activated carbon material.
26. The system comprises an adsorption tower (1), an analysis tower (2), a grading screening machine (3), a fourth active carbon conveyor (7), a fifth active carbon conveyor (8), a first buffer bin (AC 1) and a second buffer bin (AC 2), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the classifying screen grader (3) comprises a classifying screen grader feed inlet (301), a classifying screen grader first discharge port (302) and a classifying screen grader second discharge port (303), and a fourth activated carbon conveyor (7) is connected with the discharge port of the adsorption tower (1) and the feed inlet of the analysis tower (2); the first buffer bin (AC 1) is arranged below a first discharge hole (302) of the classifying screen, the second buffer bin (AC 2) is arranged below a second discharge hole (303) of the classifying screen, one end of the fifth active carbon conveyor (8) is respectively connected with a feed inlet of the front cavity (101) of the adsorption layer and a feed inlet of the rear cavity (102) of the adsorption layer, and the other end of the fifth active carbon conveyor (8) is respectively connected with a discharge hole of the first buffer bin (AC 1) and a discharge hole of the second buffer bin (AC 2); the discharge port of the analytic tower (2) is connected with the feed port (301) of the classifying screen classifier; the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
27. The system according to claim 26, wherein: the grading screening machine (3) further comprises a third discharge port (304) of the grading screening machine.
28. The system according to claim 26, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
29. The system according to claim 28, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
30. The system according to claim 29, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
31. The system according to claim 26, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
32. The system according to claim 31, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
33. The system according to claim 32, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
34. A system according to any one of claims 26-33, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
35. The system according to claim 34, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
36. The system according to claim 35, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
37. The system according to any one of claims 26-33, 35-36, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c), and a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll is installed at the bottom of each activated carbon chamber (AC-c) or under a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chamber and two side plates.
38. The system according to claim 37, wherein the round roller (G01) is arranged at the lower end of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
39. The system of claim 38, wherein θ is 15-60 °.
40. The system of claim 39, wherein θ is 20-55 °.
41. The system of claim 40, wherein θ is 25-50 °.
42. The system of claim 41, wherein θ is 30-45 °.
43. The system of claim 37, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
44. The system of claim 43, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
45. The system of claim 44, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
46. The system according to any one of claims 27-33, 35-36, 38-45, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
47. The system according to claim 46, wherein the cross section of the upper feed opening (F04) is rectangular or rectangular, and the cross section of the buffer zone (F06) is rectangular or rectangular; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
48. The system according to claim 46, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or the flat stock plate (F07) is formed by bending one plate into two plate surfaces (F0701, F0702), and the included angle 2α of the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is less than or equal to 120 °.
49. The system according to claim 48, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is equal to or greater than 30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
50. The system of claim 48, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is greater than or equal to the friction angle of the activated carbon material.
51. A desulfurization and denitrification system comprises an adsorption tower (1), an analysis tower (2), a grading screening machine (3), a fourth active carbon conveyor (7) and a fifth active carbon conveyor (8), wherein a flue gas inlet (A) is formed in one side of the adsorption tower (1), and a flue gas outlet (B) is formed in the other side of the adsorption tower (1); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the classifying screen grader (3) comprises a classifying screen grader feed inlet (301), a classifying screen grader first discharge port (302) and a classifying screen grader second discharge port (303), and a fourth activated carbon conveyor (7) is connected with the discharge port of the adsorption tower (1) and the feed inlet of the analysis tower (2); one end of the fifth activated carbon conveyor (8) is connected with a discharge port of the analysis tower (2); the other end of the fifth activated carbon conveyor (8) is connected with a feeding port (301) of the classifying screen, a first discharging port (302) of the classifying screen is connected with a feeding port of the rear cavity (102) of the adsorption layer, and a second discharging port (303) of the classifying screen is connected with the front cavity (101) of the adsorption layer; the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
52. The system of claim 51, wherein: the grading screening machine (3) further comprises a third discharge port (304) of the grading screening machine.
53. The system of claim 51, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
54. The system of claim 53, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
55. The system of claim 54, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
56. The system of claim 51, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
57. The system according to claim 56, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
58. The system as set forth in claim 57, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
59. The system of any of claims 51-58, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
60. The system of claim 59, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
61. The system according to claim 60, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
62. The system according to any one of claims 51-58, 60-61, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c), and a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll is installed at the bottom of each activated carbon chamber (AC-c) or under a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chamber and two side plates.
63. The system of claim 62, wherein the round roller (G01) is disposed at a lower end of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
64. The system of claim 63, wherein θ is 15-60 °.
65. The system of claim 64, wherein θ is 20-55 °.
66. The system of claim 65, wherein θ is 25-50 °.
67. The system of claim 66, wherein θ is 30-45 °.
68. The system of claim 62, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
69. The system of claim 68, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
70. The system of claim 69, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
71. The system according to any one of claims 51-58, 60-61, 63-70, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
72. The system according to claim 71, wherein the cross section of the upper feed opening (F04) is rectangular or rectangular, and the cross section of the buffer zone (F06) is rectangular or rectangular; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
73. The system according to claim 71, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or the flat stock plate (F07) is formed by bending one plate into two plate surfaces (F0701, F0702), and the included angle 2α of the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is less than or equal to 120 °.
74. The system according to claim 73, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is equal to or greater than 30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
75. A system according to claim 73, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is larger than or equal to the friction angle of the activated carbon material.
76. The system comprises an adsorption tower (1), an analysis tower (2), a first activated carbon conveyor (4), a second activated carbon conveyor (5), a third activated carbon conveyor (6), a vibrating screen (9) and a distributor (10), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the vibrating screen (9) comprises a vibrating screen feed inlet (901), a vibrating screen first discharge port (902) and a vibrating screen second discharge port (903); the distributor (10) comprises a distributor feed port (1001), a distributor first discharge port (1002) and a distributor second discharge port (1003); a discharge hole of the analysis tower (2) is connected with a feed hole (901) of the vibrating screen; the first discharge hole (902) of the vibrating screen is connected with the feed inlet (1001) of the distributor; the first discharge port (1002) of the distributor is connected with the feed port of the adsorption layer rear cavity (102) through the first activated carbon conveyor (4), and the second discharge port (1003) of the distributor is connected with the feed port of the adsorption layer front cavity (101) through the second activated carbon conveyor (5); the third activated carbon conveyor (6) is connected with a discharge port of the adsorption tower (1) and a feed port of the analysis tower (2); the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
77. The system as defined in claim 76, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
78. The system of claim 77, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
79. The system of claim 78, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
80. The system as defined in claim 76, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
81. The system as defined in claim 80, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
82. The system of claim 81, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
83. The system according to any of the claims 76-82, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
84. The system as recited in claim 83, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
85. The system as defined in claim 84, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
86. The system according to any one of claims 76-82, 84-85, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c), and a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll is installed at the bottom of each activated carbon chamber (AC-c) or under a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chamber and two side plates.
87. The system of claim 86, wherein the round roller (G01) is disposed at the lower ends of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
88. The system of claim 87, wherein θ is 15-60 °.
89. The system of claim 88, wherein θ is 20-55 °.
90. The system of claim 89, wherein θ is 25-50 °.
91. The system of claim 90, wherein θ is 30-45 °.
92. The system of claim 86, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
93. The system of claim 92, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
94. The system of claim 93, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
95. The system of any of claims 76-82, 84-85, 87-94, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
96. The system of claim 95, wherein the upper feed inlet (F04) is rectangular or rectangular in cross-section, and the buffer zone (F06) is rectangular or rectangular in cross-section; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
97. The system of claim 95, wherein the flat panel (F07) is formed by splicing two single panels (F0701, F0702), or wherein the flat panel (F07) is formed by bending a single panel into two panels (F0701, F0702), and wherein an included angle 2α between the two single panels (F0701, F0702) or the two panels (F0701, F0702) is equal to or less than 120 °.
98. The system according to claim 97, wherein the angle Φ between each veneer (F0701 or F0702) or each board (F0701 or F0702) and the length direction of the buffer (F06) is equal to or greater than 30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
99. The system of claim 97, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is greater than or equal to the friction angle of the activated carbon material.
100. The system comprises an adsorption tower (1), an analysis tower (2), a fourth active carbon conveyor (7), a fifth active carbon conveyor (8), a vibrating screen (9), a distributing device (10), a first buffer bin (AC 1) and a second buffer bin (AC 2), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the vibrating screen (9) comprises a vibrating screen feed inlet (901), a vibrating screen first discharge port (902) and a vibrating screen second discharge port (903); the distributor (10) comprises a distributor feed port (1001), a distributor first discharge port (1002) and a distributor second discharge port (1003); the fourth active carbon conveyor (7) is connected with the discharge port of the adsorption tower (1) and the feed port of the analysis tower (2); the first buffer bin (AC 1) is arranged below a first discharge hole (1002) of the distributor, the second buffer bin (AC 2) is arranged below a second discharge hole (1003) of the distributor, one end of the fifth active carbon conveyor (8) is respectively connected with a feed inlet of the front adsorption layer cavity (101) and a feed inlet of the rear adsorption layer cavity (102), and the other end of the fifth active carbon conveyor (8) is respectively connected with a discharge hole of the first buffer bin (AC 1) and a discharge hole of the second buffer bin (AC 2); the discharge port of the analysis tower (2) is connected with the feed port (901) of the vibrating screen; the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
101. The system of claim 100, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
102. The system of claim 101, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
103. The system of claim 102, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
104. The system of claim 100, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
105. The system of claim 104, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
106. The system of claim 105, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
107. The system according to any of the claims 100-106, wherein a screen having rectangular openings with a length L > 3D is mounted on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be trapped on the screen and h is the minimum of the length of the granular activated carbon cylinder to be trapped on the screen.
108. The system of claim 107, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
109. The system of claim 108, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
110. The system according to any of the claims 100-106, 108-109, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c) and is provided with a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll at the bottom of each activated carbon chamber (AC-c) or below a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chambers and two side plates.
111. The system according to claim 110, wherein the round roller (G01) is disposed at the lower ends of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
112. The system of claim 111, wherein θ is 15-60 °.
113. The system of claim 112, wherein θ is 20-55 °.
114. The system of claim 113, wherein θ is 25-50 °.
115. The system of claim 114, wherein θ is 30-45 °.
116. The system of claim 110, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
117. The system of claim 116, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
118. The system of claim 117, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
119. The system according to any one of claims 100-106, 108-109, 111-118, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
120. The system according to claim 119, wherein the cross section of the upper feed opening (F04) is oblong or rectangular, and the cross section of the buffer zone (F06) is oblong or rectangular; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
121. The system according to claim 119, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or wherein the flat stock plate (F07) is formed by bending a single plate into two plate surfaces (F0701, F0702), and wherein the angle 2α between the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is less than or equal to 120 °.
122. The system according to claim 121, wherein the angle Φ between the length direction of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is equal to or greater than 30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
123. The system of claim 121, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is greater than or equal to the friction angle of the activated carbon material.
124. The system comprises an adsorption tower (1), an analysis tower (2), a fourth active carbon conveyor (7), a fifth active carbon conveyor (8), a vibrating screen (9) and a distributing device (10), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the vibrating screen (9) comprises a vibrating screen feed inlet (901), a vibrating screen first discharge port (902) and a vibrating screen second discharge port (903); the distributor (10) comprises a distributor feed port (1001), a distributor first discharge port (1002) and a distributor second discharge port (1003); the fourth active carbon conveyor (7) is connected with the discharge port of the adsorption tower (1) and the feed port of the analysis tower (2); the discharge port of the analysis tower (2) is connected with the feed port (901) of the vibrating screen, and the first discharge port (902) of the vibrating screen is connected with the feed port (1001) of the distributing device through a fifth activated carbon conveyor (8); the first discharge port (1002) of the distributor is connected with the feed port of the adsorption layer rear cavity (102), and the second discharge port (1003) of the distributor is connected with the feed port of the adsorption layer front cavity (101); the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
125. The system of claim 124, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
126. The system of claim 125, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
127. The system of claim 126, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
128. The system of claim 124, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
129. The system as recited in claim 128, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
130. The system as recited in claim 129, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
131. The system according to any of the claims 124-130, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
132. The system of claim 131, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
133. The system as recited in claim 132, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
134. The system according to any of the claims 124-130, 132-133, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c) and is provided with a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll at the bottom of each activated carbon chamber (AC-c) or below a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chambers and two side plates.
135. The system according to claim 134, wherein the round roller (G01) is arranged at the lower end of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
136. The system of claim 135, wherein θ is 15-60 °.
137. The system of claim 136, wherein θ is 20-55 °.
138. The system of claim 137, wherein θ is 25-50 °.
139. The system of claim 138, wherein θ is 30-45 °.
140. The system of claim 134, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
141. The system of claim 140, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
142. The system of claim 141, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
143. The system of any of claims 124-130, 132-133, 135-142, wherein there are one or more blowdown rotary valves (F) in the lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
144. The system of claim 143, wherein the upper feed inlet (F04) is rectangular or rectangular in cross-section, and the buffer zone (F06) is rectangular or rectangular in cross-section; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
145. The system according to claim 143, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or wherein the flat stock plate (F07) is formed by bending a single plate into two plate surfaces (F0701, F0702), and wherein the angle 2α between the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is less than or equal to 120 °.
146. The system according to claim 145, wherein the angle Φ between each veneer (F0701 or F0702) or each board (F0701 or F0702) and the lengthwise direction of the buffer (F06) is ≡30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
147. The system of claim 145, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is greater than or equal to the friction angle of the activated carbon material.
148. The system comprises an adsorption tower (1), an analysis tower (2), a fourth active carbon conveyor (7), a fifth active carbon conveyor (8), a vibrating screen (9) and a distributing device (10), wherein one side of the adsorption tower (1) is provided with a flue gas inlet (A), and the other side of the adsorption tower (1) is provided with a flue gas outlet (B); an adsorption layer front cavity (101) and an adsorption layer rear cavity (102) are arranged in the adsorption tower (1), the adsorption layer front cavity (101) is arranged at one side close to the flue gas inlet (A), and the adsorption layer rear cavity (102) is arranged at one side close to the flue gas outlet (B); the vibrating screen (9) comprises a vibrating screen feed inlet (901), a vibrating screen first discharge port (902) and a vibrating screen second discharge port (903); the distributor (10) comprises a distributor feed port (1001), a distributor first discharge port (1002) and a distributor second discharge port (1003); the fourth active carbon conveyor (7) is connected with the discharge port of the adsorption tower (1) and the feed port of the analysis tower (2); the fifth activated carbon conveyor (8) is connected with a discharge hole of the analysis tower (2) and a feed hole (901) of the vibrating screen, and a first discharge hole (902) of the vibrating screen is connected with a feed hole (1001) of the distributing device; the first discharge port (1002) of the distributor is connected with the feed port of the adsorption layer rear cavity (102), and the second discharge port (1003) of the distributor is connected with the feed port of the adsorption layer front cavity (101); the large-particle-size activated carbon is discharged from a first discharge port of the distributor and enters a rear cavity of the adsorption layer; and the small-particle-size activated carbon is discharged from a second discharge port of the distributor and enters the front cavity of the adsorption layer.
149. The system as recited in claim 148, wherein: a porous plate (103) is arranged in the adsorption layer rear cavity (102), and the porous plate (103) divides the adsorption layer rear cavity (102) into a plurality of spaces; and/or
A porous plate (103) is arranged between the adsorption layer front cavity (101) and the adsorption layer rear cavity (102), and the adsorption layer front cavity (101) and the adsorption layer rear cavity (102) are separated by the porous plate (103).
150. The system as recited in claim 149, wherein: 1-5 porous plates (103) are arranged in the adsorption layer rear cavity (102).
151. The system of claim 150, wherein: 2-4 porous plates (103) are arranged in the adsorption layer rear cavity (102).
152. The system as recited in claim 148, wherein: the thickness of the adsorption layer rear cavity (102) is 1-10 times of the thickness of the adsorption layer front cavity (101).
153. The system as recited in claim 152, wherein: the thickness of the adsorption layer rear cavity (102) is 2-8 times of the thickness of the adsorption layer front cavity (101).
154. The system of claim 153, wherein: the thickness of the adsorption layer rear cavity (102) is 3-5 times of the thickness of the adsorption layer front cavity (101).
155. The system according to any of the claims 148-154, wherein a screen having rectangular openings with a length L > 3D is provided on the classifying screen (3) or the vibrating screen (9), the rectangular openings having a width a = 0.65h-0.95h, wherein D is the diameter of the circular cross section of the activated carbon cylinder to be retained on the screen and h is the minimum of the length of the granular activated carbon cylinder to be retained on the screen.
156. The system of claim 155, wherein: the width of the rectangular sieve holes is a=0.7h-0.9h, and h=1.5mm-7 mm; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 4.5-9.5mm.
157. The system of claim 156, wherein: the width a=0.73 h-0.85h of the rectangular sieve holes; the diameter D (phi) of the circular cross section of the activated carbon cylinder is 5-9mm.
158. The system according to any of the claims 148-154, 156-157, wherein the adsorption layer back chamber (102) of the adsorption tower (1) has at least 2 activated carbon chambers (AC-c) and is provided with a star wheel type activated carbon discharging roll (G) comprising a round roll (G01) and a plurality of blades (G02) equiangularly distributed along the circumference of the round roll at the bottom of each activated carbon chamber (AC-c) or below a discharge opening constituted by a front baffle (AC-I) and a back baffle (AC-II) of the lower part of the activated carbon chambers and two side plates.
159. The system according to claim 158, wherein the round roller (G01) is disposed at the lower end of the front baffle (AC-I) and the rear baffle (AC-II), and the angle θ between the blades (G02) distributed over the circumference of the round roller (G01) is 12-64 °.
160. The system of claim 159, θ being 15-60 °.
161. The system of claim 160, θ is 20-55 °.
162. The system of claim 161, θ being 25-50 °.
163. The system of claim 162, θ is 30-45 °.
164. The system of claim 158, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.5-5mm; and/or
The radius of the cross section of the round roller (G01) is 30-120mm, and the width of the blade (G02) is 40-130mm; and/or
The distance h between the center of the roller and the lower end of the front baffle is greater than r+ (12-30) mm but less than r/sin58 degrees.
165. The system of claim 164, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 0.7-3mm.
166. The system of claim 165, wherein the spacing s between the blade (G02) and the bottom end of the tailgate is 1-2mm.
167. The system of any of claims 148-154, 156-157, 159-166, wherein there are one or more blowdown rotary valves (F) in a lower or bottom bin (H) of the adsorption column, the rotary valves (F) comprising: an upper feed port (F04), a valve core (F01), a blade (F02), a valve housing (F03), a lower discharge port (F05), a buffer area (F06) positioned in the upper space of the inner cavity of the valve, and a flat plate (F07); wherein the buffer zone (F06) is adjacent to the lower space of the feed inlet (F04) and communicated with each other, and the length of the cross section of the buffer zone (F06) in the horizontal direction is longer than that of the cross section of the feed inlet (F04) in the horizontal direction; wherein the flat flitch sets up in buffer (F06), and the upper end of flat flitch (F07) is fixed at the top of buffer (F06), and the cross section of flat flitch (F07) in the horizontal direction appears "V" shape.
168. The system of claim 167, wherein the upper feed inlet (F04) is rectangular or rectangular in cross-section and the buffer zone (F06) is rectangular or rectangular in cross-section; and/or
The length of the cross section of the buffer zone (F06) is smaller than the length of the cross section of the blade (F02) in the horizontal direction.
169. The system of claim 167, wherein the flat stock plate (F07) is formed by splicing two single plates (F0701, F0702), or wherein the flat stock plate (F07) is formed by bending a single plate into two plate surfaces (F0701, F0702), and wherein the included angle 2α between the two single plates (F0701, F0702) or the two plate surfaces (F0701, F0702) is equal to or less than 120 °.
170. The system of claim 169, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each board (F0701 or F0702) and the buffer (F06) is ≡30 °; and/or
Wherein the bottoms of the two veneers (F0701, F0702) or the bottoms of the two boards (F0701, F0702) respectively are arc-shaped.
171. The system of claim 169, wherein the angle Φ between the length of each veneer (F0701 or F0702) or each veneer (F0701 or F0702) and the buffer (F06) is greater than or equal to the friction angle of the activated carbon material.
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CN112705005B (en) * 2019-10-25 2023-03-10 中冶长天国际工程有限责任公司 Method and device for obtaining pollution adsorption coefficient of activated carbon
CN110975512A (en) * 2019-11-12 2020-04-10 北京中日联节能环保工程技术有限公司 Micropore plate dust removal structure on dry desulfurization and denitrification equipment
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