CN210631924U - Ammonia-containing tail gas recovery processing device - Google Patents
Ammonia-containing tail gas recovery processing device Download PDFInfo
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- CN210631924U CN210631924U CN201920484553.7U CN201920484553U CN210631924U CN 210631924 U CN210631924 U CN 210631924U CN 201920484553 U CN201920484553 U CN 201920484553U CN 210631924 U CN210631924 U CN 210631924U
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- ammonia
- tail gas
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- hydrochloric acid
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Abstract
The utility model provides an contain ammonia tail gas recovery processing device, comprising a tower body, the bottom of tower body is equipped with hydrochloric acid pool, the top of tower body is equipped with the gas vent, from last down being equipped with the demister in proper order between the tower top to the tower bottom, one-level spray set and second grade spray set, one-level spray set's shower and the outer inlet tube intercommunication of tower body, second grade spray set is through locating the outer pipeline of tower and hydrochloric acid pool's bottom intercommunication, and be equipped with the heat exchanger on this pipeline in proper order, three-way valve and circulating pump, pipeline and liquid storage pot are passed through to remaining interface of three-way valve, be equipped with on the tower body lateral wall of second grade spray set below and. The utility model discloses a recovery unit changes the washing absorption into hydrochloric acid absorption, utilizes acid-base reaction, turns into ammonium chloride with the ammonia, sends into the absorption liquid that contains ammonium chloride and allies oneself with the current device of alkali and retrieve the ammonia or evaporate the crystallization and retrieve the ammonium chloride again, and the treatment effeciency to ammonia in the tail gas can reach more than 99%.
Description
Technical Field
The utility model belongs to the chemical industry facility field relates to an contain ammonia tail gas recovery processing device.
Background
The tail gas discharged from the ammonium chloride drying system has high ammonia content, but the strong pungent smell of the tail gas can cause damage and pollution to human health and atmospheric environment, and meanwhile, the ammonia is an extremely important production raw material in chemical production, so that the problem that the industrial tail gas containing the ammonia gas is directly discharged into the atmosphere to cause air pollution and resource waste is avoided. In the prior art, ammonia in tail gas is absorbed by water washing to generate ammonia water, but the absorption effect is not ideal, and the ammonia water is unstable and is heated and decomposed to generate ammonia and water, so that the absorptivity of light using water as an absorbent is not high, and the absorptivity is generally more than 60%; meanwhile, because the washing water temperature is higher, a refrigerating device is required to be arranged, the washing water temperature is reduced, the energy consumption is higher, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved is as follows: to the technical problem, the utility model provides an contain ammonia tail gas recovery processing device.
The technical scheme is as follows: the utility model provides an contain ammonia tail gas recovery processing device, includes the tower body, the bottom of tower body is equipped with hydrochloric acid pond, and the top of tower body is equipped with the gas vent, from last demister, one-level spray set and the second grade spray set down being equipped with in proper order between the tower top to the tower bottom, one-level spray set's shower and the outer inlet tube intercommunication of tower, the second grade spray set is through locating the outer pipeline of tower and the bottom intercommunication in hydrochloric acid pond, and is equipped with heat exchanger, three-way valve and circulating pump on this pipeline in proper order, pipeline and liquid storage pot are passed through to remaining interface of three-way valve, be equipped with on the tower body lateral wall of second grade spray set below and contain ammonia.
The spraying device also comprises a primary packing layer, wherein the primary packing layer is arranged between the primary spraying device and the secondary spraying device.
Still include the second grade packing layer, the second grade packing layer is located between second grade spray set and the tail gas air inlet that contains ammonia.
The first-stage spraying device and the second-stage spraying device are two layers or more.
And a liquid level meter and an online pH meter are arranged in the hydrochloric acid tank.
And the cooling medium of the heat exchanger is circulating cooling water.
And a gas stirrer is arranged in the hydrochloric acid tank.
Has the advantages that: the utility model discloses an contain ammonia tail gas recovery processing device absorbs hydrochloric acid with the washing and changes, utilizes acid-base reaction, turns into ammonium chloride with the ammonia, collects the absorption liquid that contains ammonium chloride, carries out recovery unit recovery again and recycles. According to the scheme, the high-efficiency demister is additionally arranged in the water scrubbing tower, the water content of the discharged tail gas is reduced, so that the aim of reducing the ammonia content in the discharged tail gas is fulfilled, and the treatment efficiency of ammonia can reach more than 99%. The utility model provides a recovery unit only needs the circulating water to be used for reducing circulating absorption liquid temperature, need not to establish refrigerating plant to reach energy-conserving purpose.
Drawings
Fig. 1 is a schematic structural diagram of the ammonia-containing tail gas recovery processing device of the present invention.
In the figure, 1 is an air inlet of tail gas containing ammonia, 2 is a liquid inlet of hydrochloric acid, 3 is a circulating pump, 4 is a heat exchanger, 5 is a demister, 6 is an air outlet, 7 is a three-way valve, 8 is a primary spray device, 9 is a liquid storage tank, 10 is a primary packing layer, 11 is a secondary packing layer, and 12 is a secondary spray device.
Detailed Description
Example 1
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides an it retrieves processing apparatus to contain ammonia tail gas, comprising a tower body, the bottom of tower body is equipped with hydrochloric acid pond, and the top of tower body is equipped with gas vent 6, from last demister 5, one-level spray set 8 and second grade spray set 12 down being equipped with in proper order between the tower top to the tower bottom, the shower of one-level spray set 8 and the outer inlet tube intercommunication of tower body, the shower of second grade spray set 12 is through locating the outer pipeline of tower and the bottom intercommunication in hydrochloric acid pond, and is equipped with heat exchanger 4, three-way valve 7 and circulating pump 3 on this pipeline in proper order, pipeline and liquid storage pot 9 are passed through to a remaining interface of three-way valve 7, be equipped with on the tower body lateral wall of second grade spray set below and contain ammonia tail gas air inlet.
The device can also be provided with a primary packing layer 10 and a secondary packing layer 11 which are used for fully mixing liquid and gas, wherein the primary packing layer 10 is arranged between a primary spray device 8 and a secondary spray device 12, the secondary packing layer 11 is arranged between the secondary spray device 12 and an ammonia-containing tail gas inlet 1, and the packing can be selected from a pall ring packing layer or a multi-surface hollow ball packing layer.
The primary spray device 8 and the secondary spray device 12 may be provided as two or more spray layers for improving contact between the absorption liquid and the gas.
And a liquid level meter and an on-line pH meter are arranged in the hydrochloric acid tank, so that the pH value of the absorption liquid and the amount of the absorption liquid can be monitored conveniently.
The cooling medium of the heat exchanger 4 is circulating cooling water.
And a gas stirrer is arranged in the hydrochloric acid tank.
During specific use, ammonia-containing tail gas (such as dry ammonium tail gas) enters from an ammonia-containing tail gas inlet 1 on the side wall of the lower end of the tower body, hydrochloric acid is supplemented from a hydrochloric acid inlet 2 to enter a hydrochloric acid pool, absorption liquid (hydrochloric acid) passes through a heat exchanger 4 through a circulating pump 3, the temperature is reduced, then the absorption liquid enters from the middle of the tower body, and the absorption liquid passes through a secondary spraying device 12 and is fully contacted with the dry ammonium tail gas in a secondary packing layer 11, ammonia in the tail gas and the hydrochloric acid are subjected to acid-base neutralization reaction to absorb ammonia gas in the tail gas, a primary spraying device 8 is opened again to dissolve ammonium chloride powder in the tail gas into water, finally the tail gas passes through a high-efficiency demister 5 to reduce water vapor carried in the gas, the tail gas discharged through an exhaust port 6 finally greatly reduces the content of the. When the concentration of ammonium chloride in the circulating absorption liquid is higher, the three-way valve 7 is adjusted, the absorption liquid enters the liquid storage tank 9, and finally when a certain amount of the absorption liquid is stored, the absorption liquid can be led into a recovery device for recovery (for example, the absorption liquid is led into an integrated alkali system to add lime milk to recover ammonia gas or an evaporative crystallization system to recover ammonium chloride). The device provided by the utility model can circularly absorb ammonia and ammonium chloride in tail gas only by regularly supplementing hydrochloric acid and fresh water.
The above is only the real-time mode of the utility model, and for the ordinary person, all can understand rapidly and use, without departing from the principle of the utility model, a plurality of improvements and decorations can also be made.
Claims (7)
1. The utility model provides an contain ammonia tail gas recovery processing device which characterized in that: the tower comprises a tower body, the bottom of tower body is equipped with the hydrochloric acid pond, and the top of tower body is equipped with gas vent (6), from last down be equipped with demister (5), one-level spray set (8) and second grade spray set (12) in proper order between the top of tower body to the bottom of tower body, the shower of one-level spray set (8) and the outer inlet tube intercommunication of tower body, second grade spray set (12) are through locating the outer pipeline of tower body and the bottom intercommunication in hydrochloric acid pond, and are equipped with heat exchanger (4), three-way valve (7) and circulating pump (3) on this pipeline in proper order, pipeline and liquid storage pot (9) are passed through to remaining interface of three-way valve (7), be equipped with on the tower body lateral wall that contains ammonia tail gas air inlet (1) and hydrochloric acid inlet (.
2. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: the spraying device further comprises a primary packing layer (10), wherein the primary packing layer (10) is arranged between the primary spraying device (8) and the secondary spraying device (12).
3. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: the device is characterized by further comprising a secondary packing layer (11), wherein the secondary packing layer (11) is arranged between the secondary spraying device (12) and the ammonia-containing tail gas inlet (1).
4. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: the first-stage spraying device (8) and the second-stage spraying device (12) are two or more layers.
5. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: and a liquid level meter and an online pH meter are arranged in the hydrochloric acid tank.
6. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: and the cooling medium of the heat exchanger (4) is circulating cooling water.
7. The ammonia-containing tail gas recovery processing device according to claim 1, characterized in that: and a gas stirrer is arranged in the hydrochloric acid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484553.7U CN210631924U (en) | 2019-04-11 | 2019-04-11 | Ammonia-containing tail gas recovery processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484553.7U CN210631924U (en) | 2019-04-11 | 2019-04-11 | Ammonia-containing tail gas recovery processing device |
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| Publication Number | Publication Date |
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| CN210631924U true CN210631924U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920484553.7U Active CN210631924U (en) | 2019-04-11 | 2019-04-11 | Ammonia-containing tail gas recovery processing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370939A (en) * | 2020-10-10 | 2021-02-19 | 金堆城钼业股份有限公司 | Ammonia gas recovery method in ammonium molybdate crystallization process |
| CN112595139A (en) * | 2020-11-23 | 2021-04-02 | 中国南方电网有限责任公司超高压输电公司广州局 | Closed cooling tower with coil pipe acid pickling descaling device |
| CN113041736A (en) * | 2021-04-21 | 2021-06-29 | 广东柏然环保科技有限公司 | A exhaust treatment system for catalyst regeneration is calcined |
| CN113527056A (en) * | 2021-08-20 | 2021-10-22 | 福建南平青松化工有限公司 | A splitter for borneol |
| CN114932138A (en) * | 2022-03-30 | 2022-08-23 | 同济大学 | Method for continuously recycling ammonia nitrogen in hazardous waste aluminum ash |
| CN115138200A (en) * | 2022-07-19 | 2022-10-04 | 山东中望环境工程有限公司 | System and method for treating ammonia-containing tail gas of fluidized bed large-particle urea device |
| CN115253995A (en) * | 2022-09-30 | 2022-11-01 | 江苏富淼科技股份有限公司 | Tower-type quaternary ammonium salt production device and quaternary ammonium salt production method |
-
2019
- 2019-04-11 CN CN201920484553.7U patent/CN210631924U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370939A (en) * | 2020-10-10 | 2021-02-19 | 金堆城钼业股份有限公司 | Ammonia gas recovery method in ammonium molybdate crystallization process |
| CN112595139A (en) * | 2020-11-23 | 2021-04-02 | 中国南方电网有限责任公司超高压输电公司广州局 | Closed cooling tower with coil pipe acid pickling descaling device |
| CN113041736A (en) * | 2021-04-21 | 2021-06-29 | 广东柏然环保科技有限公司 | A exhaust treatment system for catalyst regeneration is calcined |
| CN113527056A (en) * | 2021-08-20 | 2021-10-22 | 福建南平青松化工有限公司 | A splitter for borneol |
| CN114932138A (en) * | 2022-03-30 | 2022-08-23 | 同济大学 | Method for continuously recycling ammonia nitrogen in hazardous waste aluminum ash |
| CN115138200A (en) * | 2022-07-19 | 2022-10-04 | 山东中望环境工程有限公司 | System and method for treating ammonia-containing tail gas of fluidized bed large-particle urea device |
| CN115253995A (en) * | 2022-09-30 | 2022-11-01 | 江苏富淼科技股份有限公司 | Tower-type quaternary ammonium salt production device and quaternary ammonium salt production method |
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