CN216654038U - Chlorine and hydrogen chloride mixed waste gas treatment device - Google Patents
Chlorine and hydrogen chloride mixed waste gas treatment device Download PDFInfo
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- CN216654038U CN216654038U CN202123338870.4U CN202123338870U CN216654038U CN 216654038 U CN216654038 U CN 216654038U CN 202123338870 U CN202123338870 U CN 202123338870U CN 216654038 U CN216654038 U CN 216654038U
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Abstract
A chlorine and hydrogen chloride mixed waste gas treatment device is used for realizing treatment of chlorine and hydrogen chloride mixed waste gas. The device comprises a chlorine washing tower, an alkaline washing tower, a water washing tower, an induced draft fan and a chimney which are sequentially arranged from front to back and connected with each other through a pipeline, wherein a circulating absorption liquid containing ferrous chloride and ferric chloride is arranged in the chlorine washing tower, a circulating absorption liquid containing a calcium hydroxide solution is arranged in the alkaline washing tower, a circulating absorption liquid containing reclaimed water is arranged in the water washing tower, workshop mixed flue gas containing hydrogen chloride and chlorine enters the chlorine washing tower from the middle of the chlorine washing tower and then enters the alkaline washing tower and the water washing tower, and the workshop mixed flue gas in the chlorine washing tower, the alkaline washing tower and the water washing tower is in countercurrent contact with the circulating absorption liquid. The utility model adopts a multistage washing process to realize ultra-clean treatment of the mixed waste gas of chlorine and hydrogen chloride.
Description
Technical Field
The utility model relates to the technical field of industrial waste gas treatment, in particular to a chlorine and hydrogen chloride mixed waste gas treatment device.
Background
In the industrial production process, hydrogen chloride waste gas is often generated, the purification method generally adopts a single absorption method, such as water absorption, alkali absorption and the like, and the absorption efficiency has a space for further improving. In some production processes, mixed waste gas of hydrogen chloride and chlorine is generated, and a single absorption method is difficult to simultaneously treat the chlorine and the hydrogen chloride or has poor treatment effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chlorine and hydrogen chloride mixed waste gas treatment device which is used for realizing treatment of chlorine and hydrogen chloride mixed waste gas.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a chlorine hydrogen chloride mixes exhaust treatment device, a serial communication port, it sets gradually and every adjacent chlorine washing tower, alkaline tower and washing tower through the pipe connection between two liang including the front and back, be equipped with the circulation absorption liquid that contains ferrous chloride and ferric chloride in washing the chlorine tower, be equipped with the circulation absorption liquid that contains calcium hydroxide solution in alkaline tower, be equipped with the circulation absorption liquid that contains the normal water in washing tower, the workshop that contains hydrogen chloride and chlorine mixes the flue gas and gets into from washing chlorine tower middle part and wash the chlorine tower to get into alkaline tower and washing tower in proper order, it contacts with each circulation absorption liquid adverse current to wash chlorine tower, alkaline tower and washing tower interior workshop mixture flue gas and each circulation absorption liquid.
And furthermore, two chlorine washing tower packing layers, two chlorine washing tower spraying layers and one chlorine washing tower demister are arranged in the chlorine washing tower, wherein the chlorine washing tower demister is positioned at the top, and one chlorine washing tower spraying layer is arranged above each chlorine washing tower packing layer.
Furtherly, it is two-layer wash chlorine tower spray layer passes through the pipeline and is connected with washing chlorine tower circulating pump, it still is connected with washing chlorine tower bottom through the pipeline to wash chlorine tower circulating pump, it sets up at washing chlorine tower outside to wash chlorine tower circulating pump.
Furthermore, three alkaline tower spray layers and one alkaline tower demister are arranged in the alkaline tower, the alkaline tower demister is positioned above the uppermost alkaline tower spray layer, and the upper side and the lower side of the alkaline tower demister are both provided with an alkaline tower demister washing device; the lowermost alkaline washing tower spraying layer is connected with an alkaline washing tower circulating pump through a pipeline, and the alkaline washing tower circulating pump is also connected with the bottom of the alkaline washing tower through a pipeline; and the washing device for the demister of the alkaline washing tower on the lower layer is positioned above the spraying layer of the alkaline washing tower on the uppermost layer.
Furthermore, reclaimed water sprayed by the washing device of the demister of the alkaline tower is sprayed on the demister of the alkaline tower from the upper side and the lower side.
Furthermore, two washing tower packing layers, two washing tower distributors and a washing tower demister are arranged in the washing tower, wherein the washing tower demister is positioned at the top, and a washing tower distributor is arranged above each washing tower packing; the water washing tower distributor is connected with a water washing tower circulating pump through a pipeline, and the water washing tower circulating pump is connected with the bottom of the water washing tower through a pipeline.
Furthermore, the bottom of the chlorine washing tower is connected with a liquid preparation tank through a pipeline, a regeneration pump is arranged between the liquid preparation tank and the middle part of the chlorine washing tower, waste liquid in the bottom of the chlorine washing tower enters the liquid preparation tank, the waste liquid reacts with iron powder in the liquid preparation tank to obtain regenerated liquid, and the regenerated liquid is pumped into the chlorine washing tower by the regeneration pump.
Further, a liquid preparation tank stirrer is arranged in the liquid preparation tank.
Further, a caustic washing tower stirrer is arranged at the bottom of the caustic washing tower.
The device further comprises an induced draft fan and a chimney, wherein the induced draft fan is connected with the washing tower through a pipeline and is also connected with the chimney through a pipeline; and (3) discharging the mixed workshop flue gas treated in the washing tower through a chimney under the action of an induced draft fan.
The utility model has the beneficial effects that: the chlorine and hydrogen chloride mixed waste gas treatment device provided by the utility model at least has the following advantages:
(1) the main component of the circulating absorption liquid in the chlorine washing tower is ferrous chloride, the solution becomes ferric chloride after absorbing a certain amount of chlorine, and the ferrous chloride is regenerated through the reaction with iron powder, so that the regeneration of the absorption liquid is realized. Is beneficial to reducing the cost of the absorbent.
(2) The main component of the circulating absorption liquid in the alkaline tower is calcium hydroxide, a spray empty tower is adopted, an alkaline tower demister on the tower top is provided with an alkaline tower demister washing device, and an alkaline tower stirrer is arranged in a bottom slurry pool of the alkaline tower to prevent blockage.
(3) And a multistage washing process is adopted to realize ultra-clean treatment of the mixed waste gas of chlorine and hydrogen chloride.
(4) The absorption of the hydrogen chloride adopts calcium hydroxide solution and reclaimed water, and the operation cost is low.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1 chlorine washing tower, 2 alkaline washing tower, 3 water scrubber, 4 draught fan, 5 chimney, 6 liquid distribution tank, 7 chlorine washing tower circulating pump, 8 alkaline washing tower circulating pump, 9 water scrubber circulating pump, 10 regeneration pump, 11 alkaline washing tower agitator, 12 liquid distribution tank agitator, 13 chlorine washing tower packing layer, 14 chlorine washing tower spray layers, 15 chlorine washing tower defogger, 16 alkaline washing tower spray layers, 17 alkaline washing tower defogger, 18 alkaline washing tower defogger washing unit, 19 water scrubber distributor, 20 water scrubber packing layer, 21 water scrubber defogger, A workshop mixed waste gas, B absorption liquid, C normal water, D iron powder.
Detailed Description
As shown in fig. 1, the present invention mainly includes a chlorine washing tower 1, an alkaline washing tower 2, a water washing tower 3, an induced draft fan 4, a chimney 5, a liquid distribution tank 6, a chlorine washing tower circulating pump 7, an alkaline washing tower circulating pump 8, a water washing tower circulating pump 9, a regeneration pump 10, and a liquid distribution tank stirrer 12, and the present invention will be described in detail below with reference to the accompanying drawings.
The chlorine washing tower 1, the alkaline washing tower 2, the water washing tower 3, the induced draft fan 4 and the chimney 5 are sequentially arranged from front to back, and mixed waste gas A (containing hydrogen chloride and chlorine) in a workshop directly enters the chlorine washing tower 1 from the middle of the chlorine washing tower 1. A chlorine washing tower packing layer 13, a chlorine washing tower spraying layer 14 and a chlorine washing tower demister 15 which are sequentially arranged from bottom to top are arranged in the chlorine washing tower 1, wherein the chlorine washing tower packing layer 13 is two layers which are arranged from top to bottom, and the chlorine washing tower spraying layer 14 is arranged above each chlorine washing tower packing layer 13. The chlorine washing tower 1 is connected with a chlorine washing tower circulating pump 7 through a pipeline, the chlorine washing tower circulating pump 7 is used for extracting circulating absorption liquid (adopting a mixed solution containing ferrous chloride and ferric chloride) at the bottom of the chlorine washing tower, conveying the circulating absorption liquid to a chlorine washing tower spraying layer 14, spraying the circulating absorption liquid on a chlorine washing tower packing layer 13 through the chlorine washing tower spraying layer 14, and moving the circulating absorption liquid from top to bottom at the moment. The mixed waste gas A of the workshop entering from the middle part of the chlorine washing tower 1 moves from bottom to top and contacts with the circulating absorption liquid to remove most of the chlorine in the mixed waste gas A of the workshop. The top of the chlorine washing tower 1 is connected with the middle of the alkaline washing tower 2 through a pipeline, and workshop mixed waste gas A for removing most of chlorine in the chlorine washing tower enters the alkaline washing tower 2 from the middle of the alkaline washing tower 2.
The alkali washing tower 2 is internally provided with an alkali washing tower stirrer 11, an alkali washing tower spray layer 16, an alkali washing tower demister 17 and an alkali washing tower demister washing device 18, wherein the alkali washing tower stirrer 11 is arranged at the bottom of the alkali washing tower and is used for stirring and treating circulating absorption liquid (adopting calcium hydroxide solution) in the alkali washing tower. The caustic tower spray layer 16 is a plurality of layers, three layers in this embodiment, disposed one above the other. The upper side and the lower side of the alkali tower demister 17 are both provided with an alkali tower demister washing device 18, and the alkali tower demister washing devices 18 on the upper side and the lower side spray liquid towards the alkali tower demister 17. The alkaline washing tower spray layer 16 is connected with an alkaline washing tower circulating pump 8 through a pipeline, and the alkaline washing tower circulating pump 8 is connected with the bottom of the alkaline washing tower. The circulating pump 8 of the alkaline washing tower can pump the circulating absorption liquid at the bottom of the alkaline washing tower, then convey the circulating absorption liquid to the spraying layer 16 of the alkaline washing tower, and spray the circulating absorption liquid into the alkaline washing tower through the spraying layer 16 of the alkaline washing tower. The washing device 18 for the demister of the alkaline tower is connected with the middle part of the water scrubber 3 through a pipeline, and the top of the alkaline tower 2 is also connected with the middle part of the water scrubber 3 through a pipeline. The mixed waste gas entering the alkaline tower from the middle part of the alkaline tower contacts with the circulating absorption liquid sprayed out from the spray layer 16 of the alkaline tower, and most of hydrogen chloride and a small amount of chlorine in the mixed waste gas are removed.
The mixed waste gas of desorption most hydrogen chloride and chlorine gets into the scrubbing tower 3 in the middle part of the scrubbing tower from the scrubbing tower in, be equipped with scrubbing tower packing layer 20, scrubbing tower distributor 19 and scrubbing tower defroster 21 in the scrubbing tower 3, the scrubbing tower packing layer 20 is two-layer for setting up from top to bottom, and scrubbing tower distributor 19 is two of setting up from top to bottom, and all is equipped with a scrubbing tower distributor 19 in the top of each scrubbing tower packing layer 20. Thus, the lower water scrubber distributor 19 is positioned between the two water scrubber packing layers 20, and the upper water scrubber packing layer 20 is positioned between the two water scrubber distributors 19; a water washing tower demister 21 is provided above the water washing tower distributor 19 located above. The washing tower 3 is connected with a washing tower circulating pump 9 through a pipeline, a first end of the washing tower circulating pump 9 is connected with the lower part of the washing tower 3, and a second end of the washing tower circulating pump 9 is connected with a washing tower distributor 19 on the upper part of the washing tower. The mixed waste gas of desorption most hydrogen chloride and chlorine in the caustic wash tower gets into washing tower 3 in the middle part of the washing tower, and washing tower circulating pump 9 draws the circulation absorption liquid (adopting the normal water) of washing tower bottom, then sprays on washing tower packing layer 20 through washing tower distributor 19, and the mixed waste gas contacts with circulation absorption liquid on washing tower packing layer 20, and a small amount of hydrogen chloride and chlorine among the desorption mixed waste gas.
The top of the washing tower 3 is connected with a draught fan 4 through a pipeline, and the draught fan 4 is connected with a chimney 5 through a pipeline. Thus, the induced draft fan absorbs the residual waste gas in the water scrubber through the pipeline and then discharges the waste gas through the chimney 5.
The bottom of the chlorine washing tower 1 is connected with a liquid preparation tank 6 through a pipeline, a liquid preparation tank stirrer 12 is arranged in the liquid preparation tank 6, the circulating absorption liquid in the chlorine washing tower 1 absorbs chlorine gas to become waste liquid and is discharged into the liquid preparation tank 6 through the pipeline, iron powder D is added into the liquid preparation tank at the moment, and the waste liquid and the iron powder in the liquid preparation tank are stirred by the liquid preparation tank stirrer to obtain regeneration liquid. The liquid preparation tank 6 is connected with a regeneration pump 10 through a pipeline, the regeneration pump is also connected with the middle part of the chlorine washing tower 1, so that the regeneration pump extracts the regeneration liquid in the liquid preparation tank and pumps the regeneration liquid into the chlorine washing tower 1 to be used as the circulating absorption liquid for reuse.
Adding an absorption liquid B (calcium hydroxide solution) from the middle part of the alkaline tower 2, and adding the absorption liquid above the liquid level in the alkaline tower; and reclaimed water C is added above the liquid level in the water scrubber 3 and at the upper part of the alkaline scrubber, and the reclaimed water is also used as a water source of a washing device 18 of a demister of the alkaline scrubber.
The using method of the utility model comprises the following steps:
(1) the workshop mixed waste gas of industrial production gets into from washing chlorine tower middle part and washes the chlorine tower and upwards remove, washes chlorine tower inner loop absorption liquid and then downwards remove from washing chlorine tower upper portion blowout, and then makes the gas-liquid contact against the current to most chlorine in the desorption workshop mixed waste gas. Two chlorine washing tower packing layers, two chlorine washing tower spraying layers and one chlorine washing tower demister are arranged in the chlorine washing tower, and a circulating absorption liquid in the chlorine washing tower adopts a mixed solution containing ferrous chloride and ferric chloride.
(2) Waste gas discharged from an outlet at the top of the chlorine washing tower enters the alkaline washing tower from the middle of the alkaline washing tower and moves upwards, and circulating absorption liquid in the alkaline washing tower is sprayed out from the upper part of the chlorine washing tower and then moves downwards, so that gas and liquid are in countercurrent contact, and a small amount of chlorine and most of hydrogen chloride in the waste gas are removed. The alkaline tower adopts three layers of alkaline tower spray layers and one layer of alkaline tower demister, and the circulating absorption liquid in the alkaline tower adopts calcium hydroxide solution. The upper part and the lower part of the demister of the alkaline tower are provided with flushing devices of the demister of the alkaline tower so as to prevent the demister of the alkaline tower from being blocked.
(3) Waste gas discharged from an outlet at the top of the alkaline washing tower enters the water washing tower from the middle of the water washing tower and moves upwards, circulating absorption liquid in the water washing tower is sprayed out from the upper part of the water washing tower and then moves downwards, and then gas-liquid countercurrent contact is realized, so that a small amount of residual chlorine and hydrogen chloride in the waste gas are further removed; then the waste gas is sent to a chimney through a draught fan to reach the standard and be discharged. Two layers of filling layers of the washing tower, two layers of distributors of the washing tower and one layer of demister of the washing tower are arranged in the washing tower, and circulating absorption liquid in the washing tower adopts reclaimed water.
(4) And discharging the circulating absorption liquid in the chlorine washing tower into a liquid preparation tank after the circulating absorption liquid becomes waste liquid, adding iron powder into the liquid preparation tank to regenerate the waste liquid into regeneration liquid, and then returning the regeneration liquid into the chlorine washing tower. The chlorine washing tower and the water washing tower adopt packed towers, so that waste gas is absorbed more thoroughly.
The utility model has at least the following advantages:
(1) the main component of the circulating absorption liquid in the chlorine washing tower is ferrous chloride, the solution becomes ferric chloride after absorbing a certain amount of chlorine, and the ferrous chloride is regenerated through the reaction with iron powder, so that the regeneration of the absorption liquid is realized. Is beneficial to reducing the cost of the absorbent.
(2) The main component of the circulating absorption liquid in the alkaline tower is calcium hydroxide, a spraying empty tower is adopted, a demister of the alkaline tower at the top of the tower is provided with a washing device for the demister of the alkaline tower, and a bottom slurry tank of the alkaline tower is provided with an agitator of the alkaline tower, so that blockage is prevented.
(3) And a multistage washing process is adopted to realize ultra-clean treatment of the mixed waste gas of chlorine and hydrogen chloride.
(4) The absorption of the hydrogen chloride adopts calcium hydroxide solution and reclaimed water, and the operation cost is low.
Claims (10)
1. The utility model provides a chlorine hydrogen chloride mixes exhaust treatment device, a serial communication port, it sets gradually and every adjacent chlorine washing tower, alkaline tower and washing tower through the pipe connection between two liang including the front and back, be equipped with the circulation absorption liquid that contains ferrous chloride and ferric chloride in washing the chlorine tower, be equipped with the circulation absorption liquid that contains calcium hydroxide solution in alkaline tower, be equipped with the circulation absorption liquid that contains the normal water in washing tower, the workshop that contains hydrogen chloride and chlorine mixes the flue gas and gets into from washing chlorine tower middle part and wash the chlorine tower to get into alkaline tower and washing tower in proper order, it contacts with each circulation absorption liquid adverse current to wash chlorine tower, alkaline tower and washing tower interior workshop mixture flue gas and each circulation absorption liquid.
2. The apparatus of claim 1, wherein two chlorine washing tower packing layers, two chlorine washing tower spray layers, and one chlorine washing tower demister are disposed in the chlorine washing tower, wherein the chlorine washing tower demister is disposed at the top, and one chlorine washing tower spray layer is disposed above each chlorine washing tower packing layer.
3. The chlorine and hydrogen chloride mixed waste gas treatment device as claimed in claim 2, wherein two chlorine washing tower spraying layers are connected with a chlorine washing tower circulating pump through a pipeline, the chlorine washing tower circulating pump is further connected with the bottom of the chlorine washing tower through a pipeline, and the chlorine washing tower circulating pump is arranged outside the chlorine washing tower.
4. The chlorine and hydrogen chloride mixed waste gas treatment device according to claim 1, wherein three caustic tower spray layers and one caustic tower demister are arranged in the caustic tower, the caustic tower demister is positioned above the uppermost caustic tower spray layer, and a caustic tower demister washing device is arranged on each of the upper side and the lower side of the caustic tower demister; the lowermost alkaline washing tower spraying layer is connected with an alkaline washing tower circulating pump through a pipeline, and the alkaline washing tower circulating pump is also connected with the bottom of the alkaline washing tower through a pipeline; and the washing device for the demister of the alkaline washing tower on the lower layer is positioned above the spraying layer of the alkaline washing tower on the uppermost layer.
5. The chlorine and hydrogen chloride mixed waste gas treatment device is characterized in that reclaimed water sprayed by the washing device of the demister of the alkaline tower sprays on the demister of the alkaline tower from the upper side and the lower side.
6. The chlorine and hydrogen chloride mixed waste gas treatment device according to claim 1, wherein two layers of packing layers of the washing towers, two layers of distributors of the washing towers and one layer of demister of the washing towers are arranged in the washing towers, wherein the demister of the washing towers is positioned at the uppermost part, and one layer of distributor of the washing tower is arranged above each packing layer of the washing towers; the water washing tower distributor is connected with a water washing tower circulating pump through a pipeline, and the water washing tower circulating pump is connected with the bottom of the water washing tower through a pipeline.
7. The apparatus of claim 1, wherein the bottom of the chlorine washing tower is connected to the liquid preparation tank through a pipe, a regeneration pump is disposed between the liquid preparation tank and the middle of the chlorine washing tower, the waste liquid in the bottom of the chlorine washing tower enters the liquid preparation tank, the waste liquid reacts with the iron powder in the liquid preparation tank to obtain a regeneration liquid, and the regeneration pump pumps the regeneration liquid into the chlorine washing tower.
8. The apparatus of claim 7, wherein a mixer is disposed in the mixing tank.
9. The apparatus of claim 1, wherein a scrubber stirrer is provided at the bottom of the scrubber.
10. The chlorine and hydrogen chloride mixed waste gas treatment device according to claim 1, further comprising an induced draft fan and a chimney, wherein the induced draft fan is connected with the water washing tower through a pipeline and is further connected with the chimney through a pipeline; and (3) discharging the mixed workshop flue gas treated in the washing tower through a chimney under the action of an induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123338870.4U CN216654038U (en) | 2021-12-28 | 2021-12-28 | Chlorine and hydrogen chloride mixed waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123338870.4U CN216654038U (en) | 2021-12-28 | 2021-12-28 | Chlorine and hydrogen chloride mixed waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216654038U true CN216654038U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123338870.4U Active CN216654038U (en) | 2021-12-28 | 2021-12-28 | Chlorine and hydrogen chloride mixed waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216654038U (en) |
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2021
- 2021-12-28 CN CN202123338870.4U patent/CN216654038U/en active Active
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