CN215462989U - Ammonia desulphurization device for three-waste boiler - Google Patents

Ammonia desulphurization device for three-waste boiler Download PDF

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CN215462989U
CN215462989U CN202120741899.8U CN202120741899U CN215462989U CN 215462989 U CN215462989 U CN 215462989U CN 202120741899 U CN202120741899 U CN 202120741899U CN 215462989 U CN215462989 U CN 215462989U
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pipe
liquid
water
flue gas
dedusting
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景建凯
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Shanxi Aerospace Cathay Pacific Clean Energy Co ltd
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Shanxi Aerospace Cathay Pacific Clean Energy Co ltd
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Abstract

The utility model discloses an ammonia desulphurization device of a three-waste boiler, which comprises a boiler and a desulphurization tower, wherein the boiler is communicated with a cyclone separator, the cyclone separator is connected with the desulphurization tower through a flue gas pipe, a flue gas heat exchanger and a dedusting and cooling box are arranged on the flue gas pipe, a liquid accumulation pool is arranged at the bottom of the desulphurization tower, a second spray pipe is arranged in the desulphurization tower, a water-resisting and air-permeable plate is arranged above the second spray pipe, and a cleaning pipe is arranged above the water-resisting and air-permeable plate. Get rid of the large granule dust in the flue gas through cyclone, carry out the heat exchange through gas heater, the utilization ratio of the energy has been improved, the water of dust removal cooling incasement is cooled down once more and the absorption of the small granule dust in the flue gas, the clean and reliable reaction temperature of flue gas has been guaranteed, water in the scavenge pipe is to the tail gas after passing water proof air permeability barrier cleaning process, avoid the loss of aqueous ammonia, improve aqueous ammonia solution's life, reduce aqueous ammonia solution's change speed and desulfurization cost.

Description

Ammonia desulphurization device for three-waste boiler
Technical Field
The utility model belongs to the technical field of tail gas desulfurization, and particularly relates to an ammonia desulfurization device of a three-waste boiler.
Background
A large amount of sulfur-containing tail gas is generated in the combustion process of the three-waste boiler, and the direct discharge of the sulfur-containing tail gas can cause serious pollution to the environment. At present, a desulfurizing tower is mainly used for desulfurizing, high-temperature flue gas generated by a three-waste boiler contains a large amount of dust, and the high-temperature flue gas is directly introduced into the desulfurizing tower, so that energy waste is caused, the replacement rate of absorption liquid is accelerated, and the desulfurizing cost is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an ammonia desulphurization device of a three-waste boiler.
The utility model is realized by the following steps: the utility model provides a three wastes boiler ammonia process desulphurization unit, includes boiler and desulfurizing tower, and the boiler carries out the burning of fuel, and the desulfurizing tower carries out the desulfurization treatment of tail gas, the pipe of discharging fume of boiler is linked together with cyclone's upper portion, cyclone's bottom is vertical is provided with the ash discharging pipe, and the large granule dust in the flue gas is discharged along the ash discharging pipe under cyclone centrifugal force's effect, reduces the dust content in the flue gas, cyclone's upper end is connected with the flue gas pipe, and the flue gas after removing the large granule dust circulates along the flue gas pipe, be provided with flue gas heat exchanger and dust removal cooling case on the flue gas pipe, carry out the heat exchange through flue gas heat exchanger, make high temperature flue gas become low temperature flue gas, improved the utilization ratio of the energy, the upper end of dust removal cooling case is provided with the water injection pipe, the upper portion in the dust removal cooling case is provided with first shower, the lower extreme of first shower evenly is provided with a plurality of first nozzle, the lower end of the water injection pipe is communicated with the first spray pipes, water is injected from the water injection pipe and then sprayed out along the plurality of first nozzles, the flue gas flowing through the dedusting and cooling box is cooled again and adsorbed by small particle dust in the flue gas, the clean and reliable reaction temperature of the flue gas is ensured, the lower end of the dedusting and cooling box is provided with a blow-off pipe, the blow-off pipe is provided with a blow-off valve, the blow-off valve is opened, sewage adsorbed with the small particle dust is discharged along the blow-off pipe, the other end of the flue gas pipe is connected with the desulfurizing tower, the bottom in the desulfurizing tower is provided with a liquid accumulation pool, the liquid accumulation pool is filled with ammonia water solution, a plurality of second spray pipes are fixedly arranged above the liquid accumulation pool in the desulfurizing tower in parallel, the lower end of the second spray pipes is uniformly provided with a plurality of second nozzles, the ammonia water solution is sprayed out along the second nozzles to desulfurize the sulfur-containing flue gas in the desulfurizing tower, a first liquid pumping pipe is arranged outside the desulfurizing tower, two ends of the first liquid pumping pipe are communicated with a liquid accumulation pool and a second spray pipe, a first liquid pumping pump is arranged on the first liquid pumping pipe, the first liquid pumping pump is started, an ammonia water solution in the liquid accumulation pool is pumped into the second spray pipe along the first liquid pumping pipe, a water-proof air-permeable plate is obliquely and fixedly arranged above the second spray pipe in the desulfurizing tower, a cleaning pipe is fixedly arranged above the water-proof air-permeable plate, the lower end of the cleaning pipe is uniformly provided with a plurality of third nozzles, water in the cleaning pipe is sprayed out through the third nozzles, the tail gas passing through the water-proof air-permeable plate is cleaned, the loss of ammonia water is avoided, the service life of the ammonia water solution is prolonged, the replacement rate and the desulfurization cost of the ammonia water solution are reduced, the lower side of the water-proof air-permeable plate is connected with the upper part of the water tank through a first liquid discharge pipe, so that the water on the water-proof air-permeable plate can flow into the water tank horizontally and stably, a second liquid suction pipe is arranged in the water tank, the other end of the second liquid suction pipe is communicated with the cleaning pipe, a second liquid suction pump is arranged on the second liquid suction pipe, the second liquid suction pump is started, water in the water tank is pumped into the cleaning pipe along the second liquid suction pipe, a gas purification pipe is arranged at the top end of the desulfurization tower, flue gas after desulfurization and dust removal is discharged along the gas purification pipe, an ammonia water tank is arranged outside the desulfurization tower for storing ammonia water, the lower end of the ammonia water tank is communicated with the effusion cell through a liquid inlet pipe, a liquid inlet valve is arranged on the liquid inlet pipe and is opened for timely supplementing the ammonia water solution through the liquid inlet pipe, an air inlet pipe and a second liquid discharge pipe which are communicated with the effusion cell are arranged at the bottom of the desulfurization tower, a fan is arranged on the air inlet pipe and blows air into the desulfurization tower through the air inlet pipe to meet the requirement of ammonia water oxidation reaction, and a liquid discharge valve is arranged on the second liquid discharge pipe, and opening a liquid discharge valve at intervals to replace the ammonia water solution.
Preferably, lie in the fixed baffle that is provided with of level between hydrops pond and the second shower in the desulfurizing tower, a plurality of through-holes have evenly been seted up on the baffle, the baffle top is provided with a plurality of suspension balls, the diameter of suspension ball is greater than the internal diameter of through-hole, and the aqueous ammonia solution that the second shower was spouted forms the water film on the baffle, contains the sour flue gas and contacts with the water film after passing the through-hole, and aqueous ammonia solution is attached to and is fully contacted with containing the sour flue gas on the suspension ball, has guaranteed the area of contact who contains sour flue gas and aqueous ammonia solution, has improved desulfurization efficiency.
Preferably, the joint of the flue gas pipe and the desulfurizing tower is positioned below the partition plate.
Preferably, the top of the desulfurizing tower is provided with a demister for removing water mist generated in the working process of the desulfurizing tower.
Preferably, the dedusting and cooling box is provided with a liquid level observation window for observing the water level in the dedusting and cooling box, so that pollution discharge operation is performed in time, water is prevented from flowing into the flue gas pipe, and the joint of the flue gas pipe and the dedusting and cooling box is positioned at the upper part of the dedusting and cooling box.
The utility model has the beneficial effects that: the cyclone separator is reasonable in structural design, large-particle dust in flue gas is removed through the cyclone separator, heat exchange is carried out through the flue gas heat exchanger, high-temperature flue gas becomes low-temperature flue gas, the utilization rate of energy is improved, water in the dedusting and cooling box carries out secondary cooling on the flue gas and adsorption of small-particle dust in the flue gas, the clean and reliable reaction temperature of the flue gas is guaranteed, tail gas passing through the water-proof air-permeable plate is cleaned by the water in the cleaning pipe, the escape of ammonia water is avoided, the service life of the ammonia water solution is prolonged, and the replacement rate and the desulfurization cost of the ammonia water solution are reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a boiler; 2. a desulfurizing tower; 3. a cyclone separator; 4. an ash discharge pipe; 5. a flue gas pipe; 6. a flue gas heat exchanger; 7. a dust removal cooling box; 8. a water injection pipe; 9. a first shower pipe; 10. a first nozzle; 11. a blow-off pipe; 12. a blowoff valve; 13. a liquid accumulation tank; 14. a second shower pipe; 15. a second nozzle; 16. a first liquid suction pipe; 17. a first liquid pump; 18. a waterproof breathable plate; 19. cleaning the tube; 20. a third nozzle; 21. a first drain pipe; 22. a water tank; 23. a second liquid suction pipe; 24. a second liquid pump; 25. purifying the gas pipe; 26. an ammonia tank; 27. a liquid inlet pipe; 28. a liquid inlet valve; 29. an air inlet pipe; 30. a second drain pipe; 31. a fan; 32. a drain valve; 33. a partition plate; 34. a through hole; 35. suspending the ball; 36. a demister; 37. and a liquid level observation window.
Detailed Description
In order to clearly understand the technical scheme of the utility model, the utility model is further explained with reference to the attached drawings.
As shown in fig. 1, the ammonia desulfurization device for the three-waste boiler comprises a boiler 1 and a desulfurization tower 2, wherein the boiler 1 burns fuel, the desulfurization tower 2 desulfurizes tail gas, a smoke exhaust pipe of the boiler 1 is communicated with the upper part of a cyclone separator 3, an ash exhaust pipe 4 is vertically arranged at the bottom of the cyclone separator 3, large-particle dust in the smoke is exhausted along the ash exhaust pipe 4 under the centrifugal force action of the cyclone separator 3, so that the dust content in the smoke is reduced, the upper end of the cyclone separator 3 is connected with a smoke pipe 5, the smoke from which the large-particle dust is removed circulates along the smoke pipe 5, a smoke heat exchanger 6 and a dedusting and cooling box 7 are arranged on the smoke pipe 5, heat exchange is carried out through the smoke heat exchanger 6, so that the high-temperature smoke becomes low-temperature smoke, the energy utilization rate is improved, a water injection pipe 8 is arranged at the upper end of the dedusting and cooling box 7, the upper part in the dedusting and cooling box 7 is provided with a first spray pipe 9, the lower end of the first spray pipe 9 is uniformly provided with a plurality of first nozzles 10, the lower end of the water injection pipe 8 is communicated with the first spray pipe 9, water is injected from the water injection pipe 8 and then is sprayed out along the plurality of first nozzles 10, the flue gas flowing through the dedusting and cooling box 7 is cooled again, the small particle dust in the flue gas is adsorbed, the temperature of the flue gas is reduced to 35 ℃, the clean and reliable reaction temperature of the flue gas is ensured, the lower end of the dedusting and cooling box 7 is provided with a drain pipe 11, the drain pipe 11 is provided with a drain valve 12, the drain valve 12 is opened, the sewage adsorbed with the small particle dust is discharged along the drain pipe 11, the dedusting and cooling box 7 is provided with a liquid level observation window 37, the dedusting water level and cooling box 7 is observed, the drain operation is timely carried out, and the water is prevented from flowing into the flue gas pipe 5, the joint of the flue gas pipe 5 and the dedusting and cooling box 7 is located at the upper part of the dedusting and cooling box 7, the other end of the flue gas pipe 5 is connected with the desulfurizing tower 2, the bottom in the desulfurizing tower 2 is provided with a liquid accumulation tank 13, the liquid accumulation tank 13 is filled with ammonia water solution, a plurality of second spraying pipes 14 are fixedly arranged in parallel above the liquid accumulation tank 13 in the desulfurizing tower 2, the lower end of each second spraying pipe 14 is uniformly provided with a plurality of second nozzles 15, the ammonia water solution is sprayed out along the second nozzles 15 to desulfurize the sulfur-containing flue gas in the desulfurizing tower 2, a first liquid pumping pipe 16 is arranged outside the desulfurizing tower 2, two ends of the first liquid pumping pipe 16 are communicated with the liquid accumulation tank 13 and the second spraying pipes 14, a first liquid pumping pump 17 is arranged on the first liquid pumping pipe 16, the first liquid pumping pump 17 is started, the ammonia water solution in the liquid accumulation tank 13 is pumped into the second spraying pipes 14 along the first liquid pumping pipe 16, a partition plate 33 is horizontally and fixedly arranged between the liquid accumulation tank 13 and the second spray pipe 14 in the desulfurization tower 2, a plurality of through holes 34 are uniformly formed in the partition plate 33, a plurality of suspension balls 35 are arranged above the partition plate 33, the diameter of each suspension ball 35 is larger than the inner diameter of each through hole 34, an ammonia water solution sprayed by the second spray pipe 14 forms a water film on the partition plate 33, the sulfur-containing flue gas passes through the through holes 34 and then contacts with the water film, the ammonia water solution is attached to the suspension balls 35 and fully contacts with the sulfur-containing flue gas, the contact area between the sulfur-containing flue gas and the ammonia water solution is ensured, the desulfurization efficiency is improved, the joint of the flue gas pipe 5 and the desulfurization tower 2 is positioned below the partition plate 33, a water-resisting vent plate 18 is obliquely and fixedly arranged above the second spray pipe 14 in the desulfurization tower 2, a cleaning pipe 19 is fixedly arranged above the water-resisting vent plate 18, and a plurality of third nozzles 20 are uniformly arranged at the lower end of the cleaning pipe 19, the water in the cleaning pipe 19 is sprayed out through the third nozzle 20, the tail gas passing through the water-proof air-permeable plate 18 is cleaned, the loss of ammonia water is avoided, the service life of the ammonia water solution is prolonged, the replacement rate and the desulfurization cost of the ammonia water solution are reduced, the lower side of the water-proof air-permeable plate 18 is connected with the upper part of the water tank 22 through the first liquid discharge pipe 21, the water on the water-proof air-permeable plate 18 can conveniently and stably flow into the water tank 22 horizontally, the water tank 22 is internally provided with the second liquid suction pipe 23, the other end of the second liquid suction pipe 23 is communicated with the cleaning pipe 19, the second liquid suction pipe 23 is provided with the second liquid suction pump 24, the second liquid suction pump 24 is started, the water in the water tank 22 is pumped into the cleaning pipe 19 along the second liquid suction pipe 23, the top of the desulfurizing tower 2 is provided with the demister 36, the water mist generated in the working process of the desulfurizing tower 2 is removed, the top end of the desulfurizing tower 2 is provided with the air purifying pipe 25, the flue gas after desulfurization and dust removal is discharged along clean air pipe 25, the outside of desulfurizing tower 2 is provided with ammonia tank 26, carries out the storage of aqueous ammonia, the lower extreme of ammonia tank 26 is linked together through feed liquor pipe 27 and hydrops pond 13, be provided with feed liquor valve 28 on the feed liquor pipe 27, open feed liquor valve 28, in time carry out the replenishment of aqueous ammonia solution through feed liquor pipe 27, the bottom of desulfurizing tower 2 is provided with air-supply line 29 and the second fluid-discharge tube 30 that is linked together with hydrops pond 13, be provided with fan 31 on the air-supply line 29, fan 31 blows in the desulfurizing tower 2 with the air through air-supply line 29, satisfies aqueous ammonia oxidation reaction needs, be provided with the flowing-discharge valve 32 on the second fluid-discharge tube 30, interval a period opens flowing-discharge valve 32, carries out the change of aqueous ammonia solution.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims (5)

1. The ammonia desulfurization device for the three-waste boiler comprises a boiler and a desulfurization tower and is characterized in that a smoke exhaust pipe of the boiler is communicated with the upper part of a cyclone separator, an ash exhaust pipe is vertically arranged at the bottom of the cyclone separator, the upper end of the cyclone separator is connected with the smoke pipe, a smoke heat exchanger and a dedusting and cooling box are arranged on the smoke pipe, a water injection pipe is arranged at the upper end of the dedusting and cooling box, a first spray pipe is arranged at the upper part in the dedusting and cooling box, a plurality of first nozzles are uniformly arranged at the lower end of the first spray pipe, the lower end of the water injection pipe is communicated with the first spray pipe, a blow-off pipe is arranged at the lower end of the dedusting and cooling box, a blow-off valve is arranged on the blow-off pipe, the other end of the smoke pipe is connected with the desulfurization tower, a liquid accumulation pool is arranged at the bottom in the desulfurization tower, a plurality of second spray pipes are fixedly arranged in parallel above the liquid accumulation pool in the desulfurization tower, the lower end of the second spray pipe is uniformly provided with a plurality of second nozzles, a first liquid pumping pipe is arranged outside the desulfurization tower, two ends of the first liquid pumping pipe are communicated with the liquid accumulation pool and the second spray pipe, a first liquid pumping pump is arranged on the first liquid pumping pipe, a water-proof air-permeable plate is obliquely and fixedly arranged above the second spray pipe in the desulfurization tower, a cleaning pipe is fixedly arranged above the water-proof air-permeable plate, a plurality of third nozzles are uniformly arranged at the lower end of the cleaning pipe, the lower side of the water-proof air-permeable plate is connected with the upper part of the water tank through a first liquid discharge pipe, a second liquid pumping pipe is arranged in the water tank, the other end of the second liquid pumping pipe is communicated with the cleaning pipe, a second liquid pumping pump is arranged on the second liquid pumping pipe, the top end of the desulfurization tower is provided with an air purification pipe, an ammonia tank is arranged outside the desulfurization tower, and the lower end of the ammonia tank is communicated with the liquid accumulation pool through a liquid inlet pipe, the liquid inlet pipe is provided with a liquid inlet valve, the bottom of the desulfurizing tower is provided with an air inlet pipe and a second liquid discharge pipe which are communicated with the liquid accumulation pool, the air inlet pipe is provided with a fan, and the second liquid discharge pipe is provided with a liquid discharge valve.
2. The ammonia desulfurization device of the three-waste boiler according to claim 1, wherein a partition plate is horizontally and fixedly arranged between the liquid accumulation tank and the second spray pipe in the desulfurization tower, a plurality of through holes are uniformly formed in the partition plate, a plurality of suspension balls are arranged above the partition plate, and the diameter of each suspension ball is larger than the inner diameter of each through hole.
3. The ammonia desulphurization device of the three-waste boiler according to claim 2, wherein the joint of the flue gas pipe and the desulphurization tower is located below the partition plate.
4. The ammonia desulphurization device of the three-waste boiler according to claim 1, wherein a demister is arranged at the top of the desulphurization tower.
5. The ammonia desulphurization device of the three-waste boiler according to claim 1, wherein the dedusting and cooling box is provided with a liquid level observation window, and the joint of the flue gas pipe and the dedusting and cooling box is positioned at the upper part of the dedusting and cooling box.
CN202120741899.8U 2021-04-13 2021-04-13 Ammonia desulphurization device for three-waste boiler Active CN215462989U (en)

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CN202120741899.8U CN215462989U (en) 2021-04-13 2021-04-13 Ammonia desulphurization device for three-waste boiler

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Application Number Priority Date Filing Date Title
CN202120741899.8U CN215462989U (en) 2021-04-13 2021-04-13 Ammonia desulphurization device for three-waste boiler

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116351225A (en) * 2023-03-14 2023-06-30 宁波四明化工有限公司 A high-efficiency desulfurization and three-waste treatment system
CN116850750A (en) * 2023-07-07 2023-10-10 苏州绿仕环保科技有限公司 Organic waste gas treatment method and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116351225A (en) * 2023-03-14 2023-06-30 宁波四明化工有限公司 A high-efficiency desulfurization and three-waste treatment system
CN116351225B (en) * 2023-03-14 2026-02-17 宁波四明化工有限公司 High-efficient desulfurization three wastes processing system
CN116850750A (en) * 2023-07-07 2023-10-10 苏州绿仕环保科技有限公司 Organic waste gas treatment method and device
CN116850750B (en) * 2023-07-07 2024-11-08 苏州绿仕环保科技有限公司 Organic waste gas treatment method and device

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