CN113413751B - Steel mill sintered pellet desulfurization dust removal ultra-clean integrated device - Google Patents
Steel mill sintered pellet desulfurization dust removal ultra-clean integrated device Download PDFInfo
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- CN113413751B CN113413751B CN202110838107.3A CN202110838107A CN113413751B CN 113413751 B CN113413751 B CN 113413751B CN 202110838107 A CN202110838107 A CN 202110838107A CN 113413751 B CN113413751 B CN 113413751B
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
Abstract
The invention belongs to the technical field of waste gas treatment of sintered pellets in steel mills, and particularly relates to an ultra-clean desulfurization and dust removal integrated device for sintered pellets in steel mills, which comprises a water washing tank and a treatment tower, wherein an air inlet pipe is communicated with one side surface of the water washing tank, the position, close to the bottom end, of the water washing tank is provided with a one-way valve, the center of the top end of the water washing tank is provided with a lower communication port, the center of the bottom end of the treatment tower is provided with an upper communication port, the inner wall of the treatment tower is equidistantly provided with demisting arc plates, the inner wall of the treatment tower is fixed with a partition plate, the center of the partition plate is provided with a speed reduction assembly, the top end of an inner cavity of the treatment tower is provided with a mounting ring, the circumference of the bottom end of the mounting ring is uniformly communicated with spraying, the top end of the mounting ring is communicated with an external connecting pipe, the external connecting pipe penetrates through the top end of the treatment tower, and the center of the top end of the treatment tower is communicated with an exhaust pipe.
Description
Technical Field
The invention belongs to the technical field of steel mill sintered pellet waste gas treatment, and particularly relates to a desulfurization, dust removal and ultra-clean integrated device for steel mill sintered pellets.
Background
In steel-making operation of steel mill, sintering and pelletizing of ore are required, the sintering and pelletizing are two processes of powder ore agglomeration, namely, a process of preparing high-grade powder ore into lump ore suitable for blast furnace smelting by a sintering method or a pellet roasting method, sulfur-containing waste gas is generated during the sintering of the pellets, damage and pollution to the atmosphere are caused, and reduction of sulfur dioxide pollution becomes a current urgent priority for atmospheric environment control, and the waste gas desulfurization method mainly comprises dry, semi-dry and wet desulfurization. The current commonly used desulfurization method is a wet desulfurization method, wherein the wet desulfurization method comprises the steps of firstly spraying the waste gas by using a desulfurization solution, transferring sulfur dioxide in the waste gas into water to form sulfurous acid, then adding lime, magnesium oxide, sodium hydroxide and other neutralizing acidic desulfurization solutions, and recycling the desulfurization solution after slag-liquid separation.
Disclosure of Invention
The existing wet desulfurization is carried out desulfurization and dust removal treatment in a spraying mode, the flue gas temperature of sintering and pelletizing is generally 120-200 ℃, a large amount of water vapor can be generated in the moment of contact of waste gas and spraying liquid during spraying, the subsequent contact of the waste gas and the spraying liquid can be influenced, the reaction effect is weakened, and the desulfurization and dust removal effect is influenced. The invention provides a desulfurization and dust removal ultra-clean integrated device for sintered pellets in a steel plant, which is characterized in that before spraying, water washing is carried out to reduce the temperature of waste gas, meanwhile, the waste gas is decelerated and water mist is removed, the amount of the water mist is reduced before the waste gas is treated, and the problem that the treatment effect is poor due to dilution of the water mist on a treating agent sprayed by spraying is avoided.
The invention provides the following technical scheme:
steel mill sintered pellet desulfurization dust removal ultra-clean integrated device, including washing case and treatment column, it has the intake pipe to wash case side near bottom position intercommunication, intake pipe and washing case intercommunication position are installed the check valve, washing case leading flank installs sealing door, sealing door center upper portion is provided with the observation window, washing case trailing flank has been seted up the moisturizing mouth and the drain, washing case top center has seted up down the intercommunication mouth, it has seted up the intercommunication mouth to handle bottom center, the equidistant defogging arc board of installing on the treatment column inner wall, be fixed with the baffle on the treatment column inner wall, the speed reduction subassembly is installed at the baffle center, the collar is installed on treatment column inner chamber top, the even intercommunication of collar bottom circumference sprays, collar top intercommunication has the outer takeover, the outer takeover runs through the treatment column top and sets up, it has the blast pipe to run through at treatment column top center.
Wherein the diameter of the upper communication port is larger than that of the lower communication port.
The radius of the demisting arc plate is equal to the radius of the inner cavity of the treatment tower, the demisting arc plates are arranged on the inner wall of the treatment tower at equal intervals in a staggered mode, and the vertical distance from the side face of each demisting arc plate to the inner wall of the treatment tower is larger than the radius of each demisting arc plate.
Wherein, the speed reduction subassembly is including a speed reduction section of thick bamboo, arc pivot, speed reduction arc board, gas leakage hole and waterproof ventilated membrane, a speed reduction section of thick bamboo runs through the intercommunication and sets up at baffle top center, the equidistant symmetry of arc pivot sets up on a speed reduction section of thick bamboo inner wall, the speed reduction arc board passes through arc pivot and a speed reduction section of thick bamboo inner wall normal running fit, gas leakage hole circumference sets up on a speed reduction section of thick bamboo lateral wall, waterproof ventilated membrane is installed at gas leakage downthehole.
Wherein, the radius of speed reduction arc board equals the radius of a speed reduction section of thick bamboo inner chamber, the speed reduction arc board is half circular plate and two sets of speed reduction arc board contact sides relative and is the weak magnetism cooperation, the air leakage hole is higher than the speed reduction arc board setting of the top.
The water washing tank is characterized in that a lower water permeable opening is formed in the center circumference of the top end of the water washing tank, an upper water permeable opening is formed in the bottom end of the treatment tower in a matched mode, and leaking holes are formed in the two groups of demisting arc plates at the lowest position in a matched mode.
The side wall of the treatment tower is communicated with a recovery pipe, the communication position of the recovery pipe and the treatment tower is slightly higher than that of the partition plate, and the communication position of the recovery pipe and the treatment tower is provided with a control valve.
The beneficial effects of the invention are: this device is before waste gas sprays, carry out the washing cooling and reduce the temperature of waste gas, reduce speed and water smoke to waste gas simultaneously and get rid of, waste gas of steel mill sintering pelletizing in-process passes through the intake pipe and gets into the washing incasement, cool down the dust removal to waste gas, avoid producing water smoke when waste gas and spraying contact, steam and waste gas that the in-process produced get into in the treatment tower through lower intercommunication mouth and last intercommunication mouth, when through the defogging arc plate, block getting rid of water smoke, reduce the volume of water smoke before carrying out the processing of waste gas, avoid water smoke to spray spun finishing agent dilution, lead to the treatment effect not good, waste gas after getting rid of water smoke gets into in the section of thick bamboo that slows down, at first through the multiunit speed reduction arc plate, lead to the fact the impact to it, back up it, realize the speed reduction, make the waste gas speed reduce, the diversion increase waste gas and the contact time of finishing agent, simultaneously still can go forward further water smoke and get rid of.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic rear side view of the present invention;
FIG. 3 is a schematic view of the structure of a water washing tank of the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is an enlarged view of part A of the present invention;
FIG. 6 is an enlarged view of the part B of the present invention.
In the figure: 1. a water washing tank; 2. a treatment tower; 3. an air inlet pipe; 4. a sealing door; 5. an observation window; 6. a water replenishing port; 7. a water outlet; 8. a lower communication port; 9. an upper communication port; 10. a demisting arc plate; 11. a partition plate; 12. a reduction drum; 13. an arc-shaped rotating shaft; 14. a deceleration arc plate; 15. air leakage holes; 16. a waterproof breathable film; 17. a mounting ring; 18. spraying; 19. connecting the outer pipe; 20. an exhaust pipe; 21. a lower water permeable port; 22. a water inlet is arranged; 23. a leak hole; 24. and (7) recovering the pipe.
Detailed Description
Referring to fig. 1-6, the present invention provides the following technical solutions: the steel mill sintered pellet desulfurization and dust removal ultra-clean integrated device comprises a washing tank 1 and a treatment tower 2, wherein an air inlet pipe 3 is communicated with one side surface of the washing tank 1 close to the bottom end, a one-way valve is installed at the communicated position of the air inlet pipe 3 and the washing tank 1, a sealing door 4 is installed on the front side surface of the washing tank 1, an observation window 5 is arranged at the upper part of the center of the sealing door 4, a water replenishing port 6 and a water draining port 7 are formed in the rear side surface of the washing tank 1, a lower communicated port 8 is formed in the center of the top end of the washing tank 1, an upper communicated port 9 is formed in the center of the bottom end of the treatment tower 2, demisting arc plates 10 are installed on the inner wall of the treatment tower 2 at equal intervals, a partition plate 11 is fixed on the inner wall of the treatment tower 2, a speed reducing assembly is installed at the center of the partition plate 11, an installation ring 17 is installed at the top end of an inner cavity of the treatment tower 2, sprays 18 are uniformly communicated with the circumference of the bottom end of the installation ring 17, an external pipe 19 is communicated with an external pipe 19, the top end of the treatment tower 2 is arranged through an exhaust pipe 20; waste gas in the process of sintering and pelletizing in a steel mill enters a water washing tank 1 through an air inlet pipe 3, the waste gas is cooled and dedusted, water mist is prevented from being generated when the waste gas is contacted with a spray 18, water vapor and the waste gas generated in the process enter a treatment tower 2 through a lower communicating port 8 and an upper communicating port 9, the water mist is blocked and removed when passing through a demisting arc plate 10, the amount of the water mist is reduced before the waste gas is treated, the water mist is prevented from diluting a treating agent sprayed out of the spray 18, the treatment effect is poor, the waste gas after the water mist is removed reaches the upper part of a partition plate 11 after being decelerated through a deceleration assembly, and the waste gas is discharged through an exhaust pipe 20 for subsequent treatment after being subjected to reaction treatment with the treating agent sprayed out of the spray 18;
the diameter of the upper communication port 9 is larger than that of the lower communication port 8; the diameter of the upper communication port 9 is larger than that of the lower communication port 8, so that the waste gas is prevented from leaking when passing through the water washing tank 1 and entering the treatment tower 2;
the radius of the demisting arc plate 10 is equal to that of the inner cavity of the treatment tower 2, the demisting arc plates 10 are arranged on the inner wall of the treatment tower 2 in a staggered and equidistant manner, and the vertical distance from the side surface of the demisting arc plate 10 to the inner wall of the treatment tower 2 is greater than the radius of the demisting arc plate 10; the end surface of the demisting arc plate 10 crosses the vertical surface where the center of the treatment tower 2 is located, so that the area of the bottom end of the demisting arc plate 10, which is over against the upper communication port 9, is larger, and when waste gas passes through the upper communication port 9 and enters the treatment tower 2, the waste gas is in contact with a plurality of groups of demisting arc plates 10 to remove water mist in the waste gas;
the speed reducing assembly comprises a speed reducing cylinder 12, an arc-shaped rotating shaft 13, a speed reducing arc plate 14, air leakage holes 15 and a waterproof breathable film 16, wherein the speed reducing cylinder 12 is arranged at the center of the top end of the partition plate 11 in a penetrating and communicating mode, the arc-shaped rotating shaft 13 is symmetrically arranged on the inner wall of the speed reducing cylinder 12 at equal intervals, the speed reducing arc plate 14 is in rotating fit with the inner wall of the speed reducing cylinder 12 through the arc-shaped rotating shaft 13, the circumference of the air leakage holes 15 is arranged on the side wall of the speed reducing cylinder 12, and the waterproof breathable film 16 is arranged in the air leakage holes 15;
the radius of the speed reducing arc plates 14 is equal to the radius of the inner cavity of the speed reducing cylinder 12, the speed reducing arc plates 14 are semi-circular plates, the contact side surfaces of the two groups of opposite speed reducing arc plates 14 are in weak magnetic fit, and the air leakage holes 15 are arranged higher than the uppermost speed reducing arc plate 14; the waste gas without water mist enters the speed reducing cylinder 12, firstly passes through a plurality of groups of speed reducing arc plates 14 to impact the waste gas and jack the waste gas to realize speed reduction, so that the speed of the waste gas is reduced, the contact time of the waste gas and a treating agent is prolonged in a direction changing manner, and meanwhile, the water mist can be further removed;
a lower water permeable port 21 is formed in the center circumference of the top end of the washing tank 1, an upper water permeable port 22 is formed in the bottom end of the treatment tower 2 in a matched mode, and a leak hole 23 is formed in the two groups of the lowermost demisting arc plates 10 in a matched mode; in the process of removing the mist shielding by the mist removing arc plate 10 and the speed reducing assembly, the generated water drops fall down and fall back into the water washing tank 1 under the auxiliary cooperation of the lower permeable port 21, the leak hole 23 and the upper permeable port 22;
a recovery pipe 24 is communicated with the side wall of the treatment tower 2, the communication position of the recovery pipe 24 and the treatment tower 2 is slightly higher than that of the partition plate 11, and a control valve is arranged at the communication position of the recovery pipe 24 and the treatment tower 2; after the waste gas treatment is finished, the treating agent can be recovered and discharged;
the working principle and the using process of the invention are as follows:
when in use, the external connecting pipe 19 is used for connecting external treating agent conveying equipment, waste gas in the process of sintering and pelletizing in a steel mill enters the water washing tank 1 through the air inlet pipe 3 to cool and remove dust, water mist is prevented from being generated when the waste gas is contacted with the spraying tank 18, water vapor and the waste gas generated in the process enter the treatment tower 2 through the lower communicating port 8 and the upper communicating port 9, the diameter of the upper communicating port 9 is larger than that of the lower communicating port 8, the waste gas is prevented from leaking when passing through the water washing tank 1 and entering the treatment tower 2, the water mist is blocked and removed when passing through the demisting arc plate 10, the amount of the water mist is reduced before the treatment of the waste gas, the treating agent sprayed by the spraying tank 18 is prevented from being diluted by the water mist, the treatment effect is poor, and the waste gas after the water mist is removed enters the speed reducing cylinder 12, firstly, through multiunit speed reduction arc plate 14, cause the impact to it, push it open, realize the speed reduction, make waste gas speed reduce, the diversion increases the contact time of waste gas and finishing agent, still can go on further water smoke and get rid of simultaneously, waste gas reachs baffle 11 upper portion after slowing down the speed through the speed reduction subassembly, with spray 18 spun finishing agent reaction processing back, discharge through blast pipe 20 and carry out subsequent processing, carry out the in-process that the water smoke sheltered from and got rid of at defogging arc plate 10 and speed reduction subassembly, the water droplet whereabouts of production, under the supplementary cooperation through lower water-permeable mouth 21, leak 23 and last water-permeable mouth 22, be convenient for it to fall back to washing case 1 in, after waste gas treatment, usable recovery tube 24 carries out finishing agent recovery and discharges.
Claims (5)
1. The steel mill sintered pellet desulfurizing and dedusting ultra-clean integrated device is characterized in that: the device comprises a water washing box and a treatment tower, wherein an air inlet pipe is communicated with one side surface of the water washing box close to the bottom end, a one-way valve is installed at the communication position of the air inlet pipe and the water washing box, a sealing door is installed on the front side surface of the water washing box, an observation window is arranged at the upper part of the center of the sealing door, a water replenishing port and a water draining port are formed in the rear side surface of the water washing box, a lower communication port is formed in the center of the top end of the water washing box, an upper communication port is formed in the center of the bottom end of the treatment tower, demisting arc plates are installed on the inner wall of the treatment tower at equal intervals, a partition plate is fixed on the inner wall of the treatment tower, a speed reducing assembly is installed at the center of the partition plate, an installation ring is installed at the top end of an inner cavity of the treatment tower, showers are uniformly communicated with the bottom end of the installation ring, an outer connecting pipe is communicated with the top end of the treatment tower, the outer connecting pipe is arranged through the top end of the treatment tower, and is communicated with an exhaust pipe through the center of the treatment tower;
the speed reduction assembly comprises a speed reduction cylinder, arc rotating shafts, a speed reduction arc plate, air leakage holes and a waterproof breathable film, the speed reduction cylinder is arranged at the center of the top end of the partition plate in a penetrating and communicating mode, the arc rotating shafts are symmetrically arranged on the inner wall of the speed reduction cylinder at equal intervals, the speed reduction arc plate is in rotating fit with the inner wall of the speed reduction cylinder through the arc rotating shafts, the circumference of the air leakage holes is arranged on the side wall of the speed reduction cylinder, and the waterproof breathable film is arranged in the air leakage holes; the radius of speed reduction arc board equals the radius of a speed reduction section of thick bamboo inner chamber, the speed reduction arc board is half circular plate and two sets of speed reduction arc board contact sides relative and is the weak magnetism cooperation, the air leakage hole is higher than the speed reduction arc board setting of the top.
2. The integrated desulfurization, dust removal and ultra-clean device for the sintered pellets in the steel mill according to claim 1, characterized in that: the diameter of the upper communication port is larger than that of the lower communication port.
3. The integrated desulfurization, dust removal and ultra-clean device for the sintered pellets in the steel plant according to claim 1, characterized in that: the radius of the demisting arc plate is equal to the radius of the inner cavity of the treatment tower, the demisting arc plates are arranged on the inner wall of the treatment tower at equal intervals in a staggered mode, and the vertical distance from the side face of each demisting arc plate to the inner wall of the treatment tower is larger than the radius of each demisting arc plate.
4. The integrated desulfurization, dust removal and ultra-clean device for the sintered pellets in the steel plant according to claim 1, characterized in that: the washing tank is characterized in that a lower water permeable port is formed in the center circumference of the top end of the washing tank, an upper water permeable port is formed in the bottom end of the treatment tower in a matched mode, and leaking holes are formed in the two groups of demisting arc plates at the lowest positions in a matched mode.
5. The integrated desulfurization, dust removal and ultra-clean device for the sintered pellets in the steel mill according to claim 1, characterized in that: the treatment tower is characterized in that the side wall of the treatment tower is communicated with a recovery pipe, the communication position of the recovery pipe and the treatment tower is slightly higher than the arrangement of the partition plate, and the communication position of the recovery pipe and the treatment tower is provided with a control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838107.3A CN113413751B (en) | 2021-07-23 | 2021-07-23 | Steel mill sintered pellet desulfurization dust removal ultra-clean integrated device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838107.3A CN113413751B (en) | 2021-07-23 | 2021-07-23 | Steel mill sintered pellet desulfurization dust removal ultra-clean integrated device |
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| CN113413751A CN113413751A (en) | 2021-09-21 |
| CN113413751B true CN113413751B (en) | 2023-02-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT506624B1 (en) * | 2008-07-17 | 2009-10-15 | Ae & E Austria Gmbh & Co Kg | APPARATUS AND METHOD FOR THE ABSORPTION OF POLLUTANTS IN GASEN |
| CN101693157B (en) * | 2009-10-13 | 2011-05-18 | 张宏生 | Wind speed-reducing water mist removing device |
| CN204851082U (en) * | 2015-03-12 | 2015-12-09 | 中国石油集团西部钻探工程有限公司 | Speed reduction dust removal nipple joint |
| WO2017080507A1 (en) * | 2015-11-12 | 2017-05-18 | 上海霍林环保工程设备有限公司 | Desulfurization demister internal flue gas flow rate adjustment method and device |
| CN209771625U (en) * | 2019-04-14 | 2019-12-13 | 龙岩鼎晨机械有限公司 | Filter bag protection device of bag type dust collector |
| CN111495152A (en) * | 2020-04-26 | 2020-08-07 | 安徽顺达环保科技股份有限公司 | Wet desulphurization demisting device and method for wet electric dust collector |
| CN111672248B (en) * | 2020-06-02 | 2020-12-18 | 温州普奈机械科技有限公司 | A spray and subside device for exhaust-gas treatment |
| CN215138579U (en) * | 2021-07-23 | 2021-12-14 | 山东恒科环保设备有限公司 | Steel mill sintered pellet desulfurization dust removal ultra-clean integrated device |
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