CN215592010U - In-furnace desulfurization and denitrification system based on pneumatic conveyor - Google Patents
In-furnace desulfurization and denitrification system based on pneumatic conveyor Download PDFInfo
- Publication number
- CN215592010U CN215592010U CN202122433005.1U CN202122433005U CN215592010U CN 215592010 U CN215592010 U CN 215592010U CN 202122433005 U CN202122433005 U CN 202122433005U CN 215592010 U CN215592010 U CN 215592010U
- Authority
- CN
- China
- Prior art keywords
- pneumatic conveyor
- communicated
- feeder
- pipeline
- compressed air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 17
- 230000023556 desulfurization Effects 0.000 title claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 15
- 239000000843 powder Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 239000002028 Biomass Substances 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035553 feeding performance Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a pneumatic conveyor-based in-furnace desulfurization and denitrification system, which comprises a desulfurizer storage bin and a denitrification agent storage bin, wherein a discharge hole of the desulfurizer storage bin is communicated with a feed inlet of a first feeder, and a discharge hole of the denitrification agent storage bin is communicated with a feed inlet of a second feeder; the discharge port of the first feeder and the discharge port of the second feeder are communicated with a receiving hopper, the receiving hopper, a pneumatic conveyor and a spray gun are sequentially connected in series through a conveying channel, compressed air is introduced into the pneumatic conveyor, and the spray gun is installed in the boiler. The utility model reduces energy consumption, floor area and equipment maintenance amount, improves the operation quality of pneumatic conveying materials, and solves the problem of influence of the previous dry powder materials on the surrounding environment.
Description
Technical Field
The utility model relates to the technical field of purification devices, in particular to a pneumatic conveyor-based in-furnace desulfurization and denitrification system.
Background
The biomass boiler flue gas characteristics are that the biomass boiler flue gas has the following characteristics after being investigated, tested and analyzed: the method comprises the following steps that firstly, the temperature difference of a hearth is large, a biomass boiler mainly comprises a grate furnace and a circulating fluidized bed furnace, each furnace type is divided into a medium-temperature medium-pressure furnace, a secondary high-temperature secondary high-pressure furnace and a high-temperature high-pressure furnace, and the hearth temperature is 700-760 ℃, 880-950 ℃ and 850-1100 ℃ respectively; ② the biomass has higher hydrogen content and high water content in the flue gas,<p(H20) 15% -30%; and the smoke of the coal-fired boiler can not exceed 10 percent; thirdly, the smoke dust contains alkali metal with higher mass fraction which can reach more than 8 percent; fourthly, the concentration of sulfur dioxide and nitrogen oxide is low, the fluctuation is large, and the mass concentration of sulfur dioxide and nitrogen oxide is 100-250 mg/m when pure biomass is combusted3The mass concentration of sulfur dioxide and nitrogen oxide in the flue gas is 250-600 mg/m3Fluctuation and instantaneous speed can reach 1g/m3The above.
At present, in the field of desulfurization and denitration of biomass boilers, methods and modes have various forms, desulfurization and denitration in a furnace are taken as one of the methods, and the defects in the prior art are as follows: (1) if the material is conveyed by the fan, the material is required to pass through the fan, and the material is attached to the impeller after long-time operation, so that the dynamic balance of the impeller is damaged, and the operation of the fan is influenced.
(2) In addition, the fan has high energy consumption as a high-pressure fan and a venturi are used for conveying; the conveying process is greatly influenced by the resistance of the rear end, and the phenomenon of reverse ash spraying can occur.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model discloses a pneumatic conveyor-based in-furnace desulfurization and denitrification system.
The technical scheme adopted by the utility model is as follows:
a pneumatic conveyor-based in-furnace desulfurization and denitrification system comprises a desulfurizer storage bin and a denitrification agent storage bin, wherein a discharge port of the desulfurizer storage bin is communicated with a feed port of a first feeder, and a discharge port of the denitrification agent storage bin is communicated with a feed port of a second feeder; the discharge port of the first feeder and the discharge port of the second feeder are communicated with a receiving hopper, the receiving hopper, a pneumatic conveyor and a spray gun are sequentially connected in series through a conveying channel, compressed air is introduced into the pneumatic conveyor, and the spray gun is installed in the boiler.
The method is further technically characterized in that: the first feeder and the second feeder both comprise shells, a feed inlet is formed in one side of each shell, and a discharge outlet is formed in the other side of each shell; a main shaft penetrates through the shell, and one end of the main shaft is connected with an output shaft of the motor; the surface of the main shaft is provided with a helical blade.
The method is further technically characterized in that: the receiving hopper comprises a conical main body, a feeding hole is formed in the upper portion of the conical main body, and a discharging hole is formed in the lower portion of the conical main body.
The method is further technically characterized in that: the pneumatic conveyor comprises a first conveying pipeline and a second conveying pipeline which are communicated with each other, a gas mixing chamber is arranged between the first conveying pipeline and the second conveying pipeline, a compressed air inlet is formed in the gas mixing chamber, and the compressed air inlet is connected with a compressed air machine; the gas mixing chamber includes a first end portion, a middle portion, and a second end portion, wherein an inner diameter of the first end portion is equal to an inner diameter of the second end portion, and the inner diameter of the first end portion is larger than the inner diameter of the middle portion.
The method is further technically characterized in that: and compressed air jet flow channels are symmetrically arranged on two sides of the air mixing chamber and communicated with the second conveying pipeline.
The method is further technically characterized in that: the spray gun comprises a gun body and a gun head, and the gun head is sleeved on the gun body; the gun head is provided with a nozzle; the gun body is communicated with the tail end of the conveying channel.
The method is further technically characterized in that: the conveying channel comprises a plurality of sections of pipelines which are respectively a first pipeline, a second pipeline and a third pipeline, the receiving hopper is communicated with the pneumatic conveyor through the first pipeline, the pneumatic conveyor is communicated with compressed air through the second pipeline, and the pneumatic conveyor is communicated with the spray gun through the third pipeline.
The utility model has the following beneficial effects:
1. the utility model simplifies the prior conveying system, reduces energy consumption, occupied area and equipment maintenance amount, simultaneously improves the operation quality of pneumatic conveying materials, and solves the influence of the prior dry powder materials on the surrounding environment.
2. After compressed air is introduced through the pneumatic conveyor, negative pressure is formed in the inner cavity, dry powder or fine particles and air which are fed quantitatively at an inlet can be sucked into the conveying pipeline, and the materials are conveyed to a final point through pneumatic fluid dynamic pressure in the pipeline, so that the conveying and the injection of the materials are completed.
3. The first feeder and the second feeder ensure the smooth conveying of the desulfurizer and the denitrifier, ensure the uniform feeding of the desulfurizer and the denitrifier, reduce blockage, enhance the working stability and adaptability and have good continuous feeding performance.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a cross-sectional view of the pneumatic conveyor.
Fig. 3 is a left side view of the pneumatic conveyor.
In the figure: 1. a desulfurizer storage bin; 2. a denitrifier storage bin; 3. a first hopper; 4. a second hopper; 5. a receiving hopper; 6. a pneumatic conveyor; 601. a first delivery conduit; 602. a compressed air inlet; 603. a second delivery conduit; 604. a gas mixing chamber; 605. a compressed air jet passage; 7. a compressed air machine; 8. a spray gun; 9. a boiler; 10. a delivery channel.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the utility model, and moreover, like reference numerals designate like elements throughout the embodiments.
The following describes a specific embodiment of the present embodiment with reference to the drawings.
As shown in figure 1, the in-furnace desulfurization and denitrification system based on the pneumatic conveyor comprises a desulfurizer storage bin 1 and a denitrification agent storage bin 2, wherein a discharge hole of the desulfurizer storage bin 1 is communicated with a feed inlet of a first feeder 3, and a discharge hole of the denitrification agent storage bin 2 is communicated with a feed inlet of a second feeder 4. The discharge port of the first feeder 3 and the discharge port of the second feeder 4 are both communicated with the receiving hopper 5, the pneumatic conveyor 6 and the spray gun 8 are connected in series by the conveying channel 10 in sequence, compressed air is introduced into the pneumatic conveyor 6, and the spray gun 8 is arranged in the boiler 9. In this embodiment, the conveying passage 10 includes a plurality of sections of pipes, which are a first pipe, a second pipe and a third pipe, respectively, the receiving hopper 5 is communicated with the pneumatic conveyor 6 through the first pipe, the pneumatic conveyor 6 is communicated with the compressed air through the second pipe, and the pneumatic conveyor 6 is communicated with the spray gun 8 through the third pipe.
The first feeder 3 and the second feeder 4 both comprise a shell, a feed inlet is formed in one side of the shell, and a discharge outlet is formed in the other side of the shell. A main shaft penetrates through the shell, and one end of the main shaft is connected with an output shaft of the motor. The surface of the main shaft is provided with a helical blade.
The receiving hopper 5 comprises a conical main body, the upper part of the conical main body is provided with a feeding hole, and the lower part of the conical main body is provided with a discharging hole.
With reference to fig. 2 and 3, the pneumatic conveyor 6 comprises a first conveying pipe 601 and a second conveying pipe 603 which are communicated with each other, a gas mixing chamber 604 is arranged between the first conveying pipe 601 and the second conveying pipe 603, the gas mixing chamber 604 is provided with a compressed air inlet 602, and the compressed air inlet 602 is connected with the compressed air machine 7. The gas mixing chamber 604 includes a first end portion, a middle portion, and a second end portion, the inner diameter of the first end portion is equal to the inner diameter of the second end portion, and the inner diameter of the first end portion is larger than the inner diameter of the middle portion.
Compressed air jet flow channels 605 are symmetrically arranged on two sides of the air mixing chamber 604, and the compressed air jet flow channels 605 are communicated with the second conveying pipeline 603.
The spray gun 8 comprises a gun body and a gun head, and the gun head is sleeved on the gun body. The gun head is provided with a nozzle. The gun body communicates with the end of the transfer passage 10.
The working principle of the utility model is as follows:
the pneumatic conveyor 6 is mainly used for conveying dry powder and fine particles, a power source is the compressed air from the compressed air machine 7, the inner cavity of the pneumatic conveyor 6 is provided with negative pressure after the compressed air is introduced, the dry powder or fine particles and air which are fed quantitatively at an inlet can be sucked into the first conveying pipeline 601, and the materials are conveyed to the second conveying pipeline 603 through pneumatic fluid dynamic pressure in the pipeline, so that the conveying and the injection of the materials are completed.
Materials are stored in the desulfurizer storage tank 1 and the denitrifier storage tank 2, the materials are quantitatively fed to the receiving hopper 5 through the first feeding machine 3 and the second feeding machine 4, the materials fall into the receiving hopper 5 and are sucked into a conveying pipeline by the pneumatic conveyor 6, and compressed air is introduced into the pneumatic conveyor 6 to generate dynamic pressure due to the unique design of the pneumatic conveyor; the utility model leads the materials to be sprayed into the hearth of the boiler 9 through the spray gun 8 under the driving of the air flow, thus completing the in-boiler desulfurization and denitration of the boiler 9.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing description is illustrative of the present invention and is not to be construed as limiting the utility model, which is defined by the scope of the appended claims, as the utility model may be modified in any manner without departing from the essential structure thereof.
Claims (7)
1. The utility model provides a desulfurization deNOx systems in stove based on pneumatic conveyor which characterized in that: the denitration agent storage device comprises a desulfurizer storage bin (1) and a denitration agent storage bin (2), wherein a discharge hole of the desulfurizer storage bin (1) is communicated with a feed inlet of a first feeder (3), and a discharge hole of the denitration agent storage bin (2) is communicated with a feed inlet of a second feeder (4); the discharge hole of the first feeder (3) and the discharge hole of the second feeder (4) are communicated with a receiving hopper (5), a conveying channel (10) sequentially connects the receiving hopper (5), a pneumatic conveyor (6) and a spray gun (8) in series, the pneumatic conveyor (6) is introduced with compressed air, and the spray gun (8) is installed in a boiler (9).
2. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 1, wherein: the first feeder (3) and the second feeder (4) both comprise shells, a feed inlet is formed in one side of each shell, and a discharge outlet is formed in the other side of each shell; a main shaft penetrates through the shell, and one end of the main shaft is connected with an output shaft of the motor; the surface of the main shaft is provided with a helical blade.
3. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 1, wherein: the receiving hopper (5) comprises a conical main body, wherein a feeding hole is formed in the upper part of the conical main body, and a discharging hole is formed in the lower part of the conical main body.
4. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 1, wherein: the pneumatic conveyor (6) comprises a first conveying pipeline (601) and a second conveying pipeline (603) which are communicated with each other, a gas mixing chamber (604) is arranged between the first conveying pipeline (601) and the second conveying pipeline (603), a compressed air inlet (602) is formed in the gas mixing chamber (604), and the compressed air inlet (602) is connected with a compressed air machine (7); the gas mixing chamber (604) includes a first end portion, a middle portion, and a second end portion, wherein the first end portion has an inner diameter equal to an inner diameter of the second end portion, and the inner diameter of the first end portion is larger than the inner diameter of the middle portion.
5. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 4, wherein: compressed air jet flow channels (605) are symmetrically arranged on two sides of the air mixing chamber (604), and the compressed air jet flow channels (605) are communicated with the second conveying pipeline (603).
6. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 1, wherein: the spray gun (8) comprises a gun body and a gun head, and the gun head is sleeved on the gun body; the gun head is provided with a nozzle; the gun body is communicated with the tail end of the conveying channel (10).
7. The pneumatic conveyor-based in-furnace desulfurization and denitrification system according to claim 1, wherein: the conveying channel (10) comprises a plurality of sections of pipelines which are respectively a first pipeline, a second pipeline and a third pipeline, the receiving hopper (5) is communicated with the pneumatic conveyor (6) through the first pipeline, the pneumatic conveyor (6) is communicated with compressed air through the second pipeline, and the pneumatic conveyor (6) is communicated with the spray gun (8) through the third pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433005.1U CN215592010U (en) | 2021-10-09 | 2021-10-09 | In-furnace desulfurization and denitrification system based on pneumatic conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433005.1U CN215592010U (en) | 2021-10-09 | 2021-10-09 | In-furnace desulfurization and denitrification system based on pneumatic conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215592010U true CN215592010U (en) | 2022-01-21 |
Family
ID=79870799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122433005.1U Expired - Fee Related CN215592010U (en) | 2021-10-09 | 2021-10-09 | In-furnace desulfurization and denitrification system based on pneumatic conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215592010U (en) |
-
2021
- 2021-10-09 CN CN202122433005.1U patent/CN215592010U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106345244A (en) | Device and method for removing sulfur trioxide from coal-fired flue gas | |
| CN101187471B (en) | Taper tube and ash returning pump and ash recombustion type circulated fluid bed combustion equipment | |
| CN111637465B (en) | Treatment system and method for combustible industrial solid waste | |
| CN215951485U (en) | Biomass blending combustion system | |
| CN215592010U (en) | In-furnace desulfurization and denitrification system based on pneumatic conveyor | |
| CN200972107Y (en) | Powdered coal recombustion device for circulation fluid-bed | |
| CN201367259Y (en) | Jet type material feeder, | |
| CN102441324A (en) | Flue gas desulfurization reactor of descending circulating fluidized bed | |
| CN217139941U (en) | Anti-blocking device for denitration agent discharging of dry-method denitration equipment | |
| CN201137954Y (en) | Biomass fuel wind supplying apparatus | |
| CN201108808Y (en) | Prepositioned cyclone pre-dedusting SCR smoke-gas denitration device | |
| CN106287689B (en) | Outer circulation material lifting distribution system and the multipath circulating fluidized bed boiler of application | |
| CN110542079A (en) | flow state balance pulverized coal circulating fluidized combustion boiler and combustion method thereof | |
| CN2641050Y (en) | Powdered coal multielement gasification industrial prodn. plant of ash cohesive circulating fluid bed | |
| CN215027644U (en) | High-efficient SDS dry desulphurization unit | |
| CN217795420U (en) | Semi-dry desulfurization system suitable for low-sulfur flue gas | |
| CN113559692A (en) | Double-tower double-circulation semi-dry desulfurization device, process and application | |
| CN106139879A (en) | A kind of fire coal boiler fume denitration in the stove wet desulphurization device | |
| CN112755752A (en) | Dry denitration process and equipment | |
| CN108126491A (en) | A kind of efficient NOx control method and device of biomass boiler | |
| CN210320012U (en) | Low-nitrogen combustion discharge system of circulating fluidized bed boiler | |
| CN111486448B (en) | Axial-flow cyclone separation fluidized bed boiler fly ash recycling device | |
| CN108679596B (en) | PNCR boiler flue gas treatment equipment | |
| CN202082939U (en) | Fly ash conveying mechanism of boiler economizer | |
| CN201059550Y (en) | Gradually dwindling and gradually expanding pipe, ash returning pump and flyash reburning type circulating fluid bed combustion equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |