CN216726604U - Chlorination tail gas absorption processing apparatus - Google Patents
Chlorination tail gas absorption processing apparatus Download PDFInfo
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- CN216726604U CN216726604U CN202220038774.3U CN202220038774U CN216726604U CN 216726604 U CN216726604 U CN 216726604U CN 202220038774 U CN202220038774 U CN 202220038774U CN 216726604 U CN216726604 U CN 216726604U
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- Prior art keywords
- falling film
- tail gas
- absorption
- film absorption
- outlet
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 264
- 238000005660 chlorination reaction Methods 0.000 title abstract description 19
- 239000011552 falling film Substances 0.000 claims abstract description 159
- 239000007788 liquid Substances 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000010408 film Substances 0.000 claims description 12
- 239000003513 alkali Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 abstract description 8
- 239000000460 chlorine Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to the field of tail gas treatment equipment, in particular to a chlorinated tail gas absorption treatment device, which comprises a primary falling film absorption tower, a primary falling film absorption tank, a secondary falling film absorption tower, a secondary falling film absorption tank, a tertiary falling film absorption tower, a tertiary falling film absorption tank, a quaternary falling film absorption tower and a quaternary falling film absorption tank, wherein the primary falling film absorption tower is connected with the quaternary falling film absorption tower; one end of the primary falling film absorption tower is provided with a first tail gas inlet and a first absorption liquid outlet, and the other end of the primary falling film absorption tower is provided with a first tail gas outlet and a first absorption liquid inlet; and one end of the second-stage falling film absorption tower is provided with a second tail gas inlet and a second absorption liquid inlet, and the other end of the second-stage falling film absorption tower is provided with a second tail gas outlet and a second absorption liquid outlet. The chlorination tail gas absorption treatment device provided by the utility model can remove incompletely reacted chlorine and chlorinated substances produced by chlorination reaction by adopting a graded absorption treatment mode.
Description
Technical Field
The utility model relates to the field of tail gas treatment equipment, in particular to a chlorinated tail gas absorption treatment device.
Background
Chlorine can be subjected to substitution reaction or addition reaction with organic matters and inorganic matters to generate various chlorides. Is mainly used for producing plastics (such as PVP), synthetic fiber, dye, pesticide, disinfectant, bleaching agent solvent and various chlorides.
When chlorine is introduced into the reactor for chlorination reaction, the tail gas after the reaction generally contains chlorine which is not completely reacted and chlorine chloride produced after substitution or addition reaction, and the tail gas is generally acidic. The existing chlorination reaction tail gas treatment device has the problem of unreasonable structure, and the tail gas is easy to absorb incompletely.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a chlorinated tail gas absorption treatment device with a good tail gas absorption effect.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the chlorinated tail gas absorption treatment device comprises a first-stage falling film absorption tower, a first-stage falling film absorption tank, a second-stage falling film absorption tower, a second-stage falling film absorption tank, a third-stage falling film absorption tower, a third-stage falling film absorption tank, a fourth-stage falling film absorption tower and a fourth-stage falling film absorption tank;
one end of the first-stage falling film absorption tower is provided with a first tail gas inlet and a first absorption liquid outlet, the other end of the first-stage falling film absorption tower is provided with a first tail gas outlet and a first absorption liquid inlet, the first absorption liquid outlet is connected with an inlet of the first-stage falling film absorption tank, the first absorption liquid inlet is connected with an outlet of the first-stage falling film absorption tank, and clear water is stored in the first-stage falling film absorption tank;
a second tail gas inlet and a second absorption liquid inlet are formed in one end of the second-stage falling film absorption tower, a second tail gas outlet and a second absorption liquid outlet are formed in the other end of the second-stage falling film absorption tower, the second tail gas inlet is connected with the first tail gas outlet, the second absorption liquid outlet is connected with an inlet of the second-stage falling film absorption tank, the second absorption liquid inlet is connected with an outlet of the second-stage falling film absorption tank, and clear water is stored in the second-stage falling film absorption tank;
a third tail gas inlet and a third absorption liquid inlet are formed in one end of the third falling film absorption tower, a third tail gas outlet and a third absorption liquid outlet are formed in the other end of the third falling film absorption tower, the third tail gas inlet is connected with the second tail gas outlet, the third absorption liquid outlet is connected with an inlet of the third falling film absorption tank, the third absorption liquid inlet is connected with an outlet of the third falling film absorption tank, and alkali liquor is stored in the third falling film absorption tank;
one end of the four-stage falling film absorption tower is provided with a fourth tail gas inlet and a fourth absorption liquid inlet, the other end of the four-stage falling film absorption tower is provided with a fourth tail gas outlet and a fourth absorption liquid outlet, the fourth tail gas inlet is connected with a third tail gas outlet, the fourth absorption liquid outlet is connected with an inlet of the four-stage falling film absorption tank, the fourth absorption liquid inlet is connected with an outlet of the four-stage falling film absorption tank, and alkali liquor is stored in the four-stage falling film absorption tank.
Further, still include first condenser, first condenser is equipped with tail gas receiving port and tail gas discharge port, tail gas discharge port with first tail gas access connection.
Further, still include second condenser and third condenser, the second condenser set up in on the one-level falling film absorption tank, the third condenser sets up on the second grade falling film absorption tank.
Furthermore, a circulating water inlet and a circulating water outlet are arranged on the first-stage falling film absorption tower, the second-stage falling film absorption tower, the third-stage falling film absorption tower and the fourth-stage falling film absorption tower.
Furthermore, the tail gas absorption liquid treatment pipe is further included, and the outlet of the first-stage falling film absorption tank, the outlet of the second-stage falling film absorption tank, the outlet of the third-stage falling film absorption tank and the outlet of the fourth-stage falling film absorption tank are all connected with the tail gas absorption liquid treatment pipe.
The utility model has the beneficial effects that: the chlorinated tail gas absorption treatment device adopts the cooperation of a multistage falling film absorption tower and a falling film absorption tank, and adopts clear water or alkali liquor as an absorbent to carry out graded absorption treatment on the tail gas of the chlorination reaction. The chlorination tail gas absorption treatment device provided by the utility model can remove incompletely reacted chlorine and chlorinated substances produced by chlorination reaction by adopting a graded absorption treatment mode.
Drawings
FIG. 1 is a schematic structural diagram of a chlorinated tail gas absorption and treatment device according to an embodiment of the present invention;
description of reference numerals:
1. a first-stage falling film absorption tower; 11. a first tail gas inlet; 12. a first absorption liquid outlet; 13. a first tail gas outlet; 14. a first absorption liquid inlet; 2. a first-stage falling film absorption tank; 3. a secondary falling film absorption tower; 31. a second tail gas inlet; 32. a second absorption liquid inlet; 33. a second tail gas outlet; 34. a second absorption liquid outlet; 4. a secondary falling film absorption tank; 5. a third-stage falling film absorption tower; 51. a third tail gas inlet; 52. a third absorption liquid inlet; 53. a third tail gas outlet; 54. a third absorption liquid outlet; 6. a third-stage falling film absorption tank; 7. a four-stage falling film absorption tower; 71. a fourth tail gas inlet; 72. a fourth absorption liquid inlet; 73. a fourth tail gas outlet; 74. a fourth absorption liquid outlet; 8. a four-stage falling film absorption tank; 9. a first condenser; 91. a second condenser; 92. a third condenser; 10. and a tail gas absorption liquid treatment pipe.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model provides a chlorination tail gas absorption treatment device which is used for removing chlorine which is not completely reacted and chlorinated substances produced by chlorination reaction.
Referring to fig. 1, the chlorinated tail gas absorption treatment device of the present invention includes a first-stage falling film absorption tower 1, a first-stage falling film absorption tank 2, a second-stage falling film absorption tower 3, a second-stage falling film absorption tank 4, a third-stage falling film absorption tower 5, a third-stage falling film absorption tank 6, a fourth-stage falling film absorption tower 7, and a fourth-stage falling film absorption tank 8;
one end of the primary falling film absorption tower 1 is provided with a first tail gas inlet 11 and a first absorption liquid outlet 12, the other end of the primary falling film absorption tower 1 is provided with a first tail gas outlet 13 and a first absorption liquid inlet 14, the first absorption liquid outlet 12 is connected with an inlet of the primary falling film absorption tank 2, the first absorption liquid inlet 14 is connected with an outlet of the primary falling film absorption tank 2, and clear water is stored in the primary falling film absorption tank 2;
a second tail gas inlet 31 and a second absorption liquid inlet 32 are arranged at one end of the secondary falling film absorption tower 3, a second tail gas outlet 33 and a second absorption liquid outlet 34 are arranged at the other end of the secondary falling film absorption tower 3, the second tail gas inlet 31 is connected with the first tail gas outlet 13, the second absorption liquid outlet 34 is connected with an inlet of the secondary falling film absorption tank 4, the second absorption liquid inlet 32 is connected with an outlet of the secondary falling film absorption tank 4, and clear water is stored in the secondary falling film absorption tank 4;
a third tail gas inlet 51 and a third absorption liquid inlet 52 are arranged at one end of the three-stage falling film absorption tower 5, a third tail gas outlet 53 and a third absorption liquid outlet 54 are arranged at the other end of the three-stage falling film absorption tower 5, the third tail gas inlet 51 is connected with the second tail gas outlet 33, the third absorption liquid outlet 54 is connected with an inlet of the three-stage falling film absorption tank 6, the third absorption liquid inlet 52 is connected with an outlet of the three-stage falling film absorption tank 6, and alkali liquor is stored in the three-stage falling film absorption tank 6;
one end of level four falling film absorption tower 7 is equipped with fourth tail gas import 71 and fourth absorption liquid import 72, the other end of level four falling film absorption tower 7 is equipped with fourth tail gas export 73 and fourth absorption liquid export 74, fourth tail gas import 71 with third tail gas exit 53 connects, fourth absorption liquid export 74 with the access connection of level four falling film absorption tank 8, fourth absorption liquid import 72 with the exit connection of level four falling film absorption tank 8, there is alkali lye in the level four falling film absorption tank 8.
From the above description, the beneficial effects of the present invention are: the chlorinated tail gas absorption treatment device adopts the cooperation of a multistage falling film absorption tower and a falling film absorption tank, and adopts clear water or alkali liquor as an absorbent to carry out graded absorption treatment on the tail gas of the chlorination reaction. The chlorination tail gas absorption treatment device provided by the utility model can remove incompletely reacted chlorine and chlorinated substances produced by chlorination reaction by adopting a graded absorption treatment mode.
In an alternative embodiment, the system further comprises a first condenser 9, wherein the first condenser 9 is provided with an exhaust gas receiving port and an exhaust gas discharging port, and the exhaust gas discharging port is connected with the first exhaust gas inlet 11.
As can be seen from the above description, the chlorination tail gas of the chlorination reaction is condensed by the condenser, a part of the unreacted materials flows back to the reaction kettle for further reaction, and the uncondensed tail gas firstly passes through the first-stage falling film absorption tower 1.
In an alternative embodiment, a second condenser 91 and a third condenser 92 are further included, the second condenser 91 is arranged on the primary falling film absorption tank 2, and the third condenser 92 is arranged on the secondary falling film absorption tank 4.
As is apparent from the above description, the second condenser 91 and the third condenser 92 serve to lower the temperature of the absorption liquid, thereby improving the absorption effect.
In an optional embodiment, the first-stage falling film absorption tower 1, the second-stage falling film absorption tower 3, the third-stage falling film absorption tower 5 and the fourth-stage falling film absorption tower 7 are respectively provided with a circulating water inlet and a circulating water outlet.
In an optional embodiment, the system further comprises a tail gas absorption liquid treatment pipe 10, and an outlet of the primary falling film absorption tank 2, an outlet of the secondary falling film absorption tank 4, an outlet of the tertiary falling film absorption tank 6 and an outlet of the quaternary falling film absorption tank 8 are connected with the tail gas absorption liquid treatment pipe 10.
The working principle of the utility model is as follows: tail gas firstly passes through the first-stage falling film absorption tower 1, the movement direction of the tail gas is opposite to the flow direction of a liquid film in the falling film tower, so that the residence time of the tail gas in the first-stage falling film absorption tower 1 is prolonged, and the absorption effect of the first-stage falling film absorption tower 1 is ensured; tail gas which is not absorbed by the first-stage falling film absorption system enters the second-stage falling film absorption system from the top of the second-stage falling film absorption tower 3, and the movement direction of the tail gas is the same as the flow direction of a liquid film in the falling film tower, so that the unabsorbed tail gas is absorbed by the liquid film in the second-stage falling film absorption tower 3 in a contact manner, and the tail gas is not suppressed; tail gas which is not absorbed by the secondary falling film absorption system enters the tertiary falling film absorption system from the top of the tertiary falling film absorption tower 5, at the moment, the movement direction of the tail gas is the same as the flow direction of a liquid film in the falling film tower, the unabsorbed tail gas is absorbed by the liquid film in the tertiary falling film absorption tower 5 in a contact manner, and simultaneously, the tail gas cannot be suppressed, and absorption liquid in the tertiary falling film absorption tank 6 is alkali liquor, so that most of unabsorbed acid gas is absorbed; tail gas which is not absorbed by the three-level falling film absorption system enters the four-level falling film absorption system from the top of the four-level falling film absorption tower 7, the movement direction of the tail gas is the same as the flow direction of a liquid film in the four-level falling film absorption tower, the unabsorbed tail gas is absorbed by the liquid film in the four-level falling film absorption tower 7 in a contact manner, and meanwhile, the tail gas cannot be suppressed, absorption liquid in the four-level falling film absorption tank 8 is alkali liquid, a small part of unabsorbed acid gas is absorbed and then discharged, and the tail gas absorption liquid is sent to treatment equipment through a tail gas absorption liquid treatment pipe 10.
In summary, the utility model provides a chlorinated tail gas absorption treatment device, which adopts a multistage falling film absorption tower and a falling film absorption tank to cooperate, and uses clear water or alkali liquor as an absorbent to carry out graded absorption treatment on the tail gas of the chlorination reaction. The chlorination tail gas absorption treatment device provided by the utility model can remove incompletely reacted chlorine and chlorinated substances produced by chlorination reaction by adopting a graded absorption treatment mode.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. The chlorinated tail gas absorption treatment device is characterized by comprising a first-stage falling film absorption tower, a first-stage falling film absorption tank, a second-stage falling film absorption tower, a second-stage falling film absorption tank, a third-stage falling film absorption tower, a third-stage falling film absorption tank, a fourth-stage falling film absorption tower and a fourth-stage falling film absorption tank;
one end of the first-stage falling film absorption tower is provided with a first tail gas inlet and a first absorption liquid outlet, the other end of the first-stage falling film absorption tower is provided with a first tail gas outlet and a first absorption liquid inlet, the first absorption liquid outlet is connected with an inlet of the first-stage falling film absorption tank, the first absorption liquid inlet is connected with an outlet of the first-stage falling film absorption tank, and clear water is stored in the first-stage falling film absorption tank;
a second tail gas inlet and a second absorption liquid inlet are formed in one end of the secondary falling film absorption tower, a second tail gas outlet and a second absorption liquid outlet are formed in the other end of the secondary falling film absorption tower, the second tail gas inlet is connected with the first tail gas outlet, the second absorption liquid outlet is connected with an inlet of the secondary falling film absorption tank, the second absorption liquid inlet is connected with an outlet of the secondary falling film absorption tank, and clear water is stored in the secondary falling film absorption tank;
a third tail gas inlet and a third absorption liquid inlet are formed in one end of the third falling film absorption tower, a third tail gas outlet and a third absorption liquid outlet are formed in the other end of the third falling film absorption tower, the third tail gas inlet is connected with the second tail gas outlet, the third absorption liquid outlet is connected with an inlet of the third falling film absorption tank, the third absorption liquid inlet is connected with an outlet of the third falling film absorption tank, and alkali liquor is stored in the third falling film absorption tank;
the one end of level four falling liquid film absorption tower is equipped with fourth tail gas import and fourth absorption liquid import, the other end of level four falling liquid film absorption tower is equipped with fourth tail gas export and fourth absorption liquid export, fourth tail gas import with third tail gas exit linkage, the fourth absorption liquid export with the access connection of level four falling liquid film absorption tank, the fourth absorption liquid import with the exit linkage of level four falling liquid film absorption tank, there is alkali lye in the level four falling liquid film absorption tank.
2. The chlorinated tail gas absorption and treatment device according to claim 1, further comprising a first condenser, wherein the first condenser is provided with a tail gas receiving port and a tail gas discharge port, and the tail gas discharge port is connected with the first tail gas inlet.
3. The chlorinated tail gas absorption treatment device according to claim 1, further comprising a second condenser and a third condenser, wherein the second condenser is disposed on the primary falling film absorption tank, and the third condenser is disposed on the secondary falling film absorption tank.
4. The chlorinated tail gas absorption treatment device according to claim 1, wherein a circulating water inlet and a circulating water outlet are arranged on each of the first-stage falling film absorption tower, the second-stage falling film absorption tower, the third-stage falling film absorption tower and the fourth-stage falling film absorption tower.
5. The chlorinated tail gas absorption and treatment device according to claim 1, further comprising a tail gas absorption liquid treatment pipe, wherein an outlet of the primary falling film absorption tank, an outlet of the secondary falling film absorption tank, an outlet of the tertiary falling film absorption tank and an outlet of the quaternary falling film absorption tank are connected with the tail gas absorption liquid treatment pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038774.3U CN216726604U (en) | 2022-01-07 | 2022-01-07 | Chlorination tail gas absorption processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038774.3U CN216726604U (en) | 2022-01-07 | 2022-01-07 | Chlorination tail gas absorption processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216726604U true CN216726604U (en) | 2022-06-14 |
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ID=81911948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220038774.3U Active CN216726604U (en) | 2022-01-07 | 2022-01-07 | Chlorination tail gas absorption processing apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN216726604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619111A (en) * | 2023-12-28 | 2024-03-01 | 珠海百川石化工程设计有限公司 | Acid tail gas treatment device |
-
2022
- 2022-01-07 CN CN202220038774.3U patent/CN216726604U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619111A (en) * | 2023-12-28 | 2024-03-01 | 珠海百川石化工程设计有限公司 | Acid tail gas treatment device |
| CN117619111B (en) * | 2023-12-28 | 2024-05-31 | 珠海百川石化工程设计有限公司 | Acid tail gas treatment device |
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