CN213375864U - P chlorobenzene formaldehyde tail gas dechlorination device - Google Patents
P chlorobenzene formaldehyde tail gas dechlorination device Download PDFInfo
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- CN213375864U CN213375864U CN202021839627.3U CN202021839627U CN213375864U CN 213375864 U CN213375864 U CN 213375864U CN 202021839627 U CN202021839627 U CN 202021839627U CN 213375864 U CN213375864 U CN 213375864U
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Abstract
The utility model belongs to the technical field of tail gas dechlorination devices, in particular to a p-chlorobenzaldehyde tail gas dechlorination device; the device comprises an absorber and a sulfur storage tank, wherein the absorber is provided with a first tail gas inlet, a second tail gas inlet and a tail gas outlet, and the sulfur storage tank is provided with a primary tail gas inlet, a secondary tail gas outlet and a tail material outlet; the first tail gas inlet is connected with a production tail gas pipeline, the tail gas outlet is connected with a primary tail gas pipeline, the primary tail gas pipeline is connected with a primary tail gas inlet, the secondary tail gas outlet is connected with a secondary tail gas pipeline, the tail material outlet is sequentially connected with a pre-pump mixing output pipeline, a material beating pump and a post-pump mixing output pipeline, the post-pump mixing output pipeline is connected with a liquid output pipeline and a circulating gas pipeline, and the circulating gas pipeline is connected with a second tail gas inlet; the utility model discloses it is rational in infrastructure, be applicable to p chlorobenzene formaldehyde production process, can absorb chlorine in its tail gas fast and utilize it, improved work efficiency, reduced manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of the tail gas dechlorination device, concretely relates to p-chlorobenzaldehyde tail gas dechlorination device.
Background
P-chlorobenzaldehyde, also known as 4-chlorobenzaldehyde, is colorless to pale yellow flaky crystal or powder with strong toxicity, is stored in a cool and ventilated storehouse, is prevented from contacting with oxidant, air and light during storage, is commonly used as an intermediate of medicines and dyes, or is used for manufacturing fennalu, aminobenzoic acid and the like; in the production process of p-chlorobenzaldehyde, chlorine and p-chlorotoluene react to generate tail gas, the important component of the tail gas is hydrogen chloride, and a small amount of unreacted chlorine is also contained, the small amount of chlorine in the hydrogen chloride has great influence on subsequent treatment, and the absorbed hydrochloric acid has great taste and is not easy to sell due to the chlorine, so that the device for removing the chlorine from the p-chlorobenzaldehyde tail gas has a reasonable structure and is suitable for the production process of the p-chlorobenzaldehyde.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, and provide a rational in infrastructure, be applicable to p-chlorobenzaldehyde production process, can absorb chlorine in its tail gas fast and the p-chlorobenzaldehyde tail gas dechlorination device who utilizes.
The purpose of the utility model is realized like this: the p-chlorobenzaldehyde tail gas dechlorination device comprises an absorber, wherein a first tail gas inlet, a second tail gas inlet and a tail gas outlet are formed in the absorber; first tail gas access connection has the production tail gas pipeline, tail gas exit linkage has a tail gas pipeline, a tail gas pipe connection the tail gas entry of once, secondary tail gas exit linkage has the secondary tail gas pipeline, the mixed delivery pipeline before the tailing exit linkage has the pump, the mixed delivery pipeline connects the entry end of dnockout pump before the pump, dnockout pump's exit end is connected with the mixed delivery pipeline behind the pump, the mixed delivery pipeline is connected with liquid output pipeline and circulating gas pipeline behind the pump, the circulating gas pipe connection the second tail gas entry.
The post-pump mixing output pipeline is connected with the liquid output pipeline and the circulating gas pipeline through a gas-liquid separation device, the post-pump mixing output pipeline is connected with an input interface of the gas-liquid separation device, a liquid output interface of the gas-liquid separation device is connected with the liquid output pipeline, and a gas output interface of the gas-liquid separation device is connected with the circulating gas pipeline.
And a first control valve is arranged on the mixing output pipeline in front of the pump.
And a second control valve is arranged on the liquid output pipeline.
And a third control valve is arranged on the circulating gas pipeline.
And a fourth control valve is arranged on the secondary tail gas pipeline.
The tail end of the liquid output pipeline is connected with thionyl chloride production equipment.
The tail end of the secondary tail gas pipeline is connected with hydrochloric acid production equipment.
The utility model has the advantages that: the utility model discloses a chlorine removal device for p-chlorobenzaldehyde tail gas, which mainly comprises an absorber and a sulfur storage tank, wherein the absorber is used for primarily treating the production tail gas input from a production tail gas pipeline, and then the production tail gas is input into the sulfur storage tank through a tail gas pipeline, a sulfur layer is arranged in the sulfur storage tank, when the chlorine-containing tail gas passes through the sulfur layer, chlorine gas quickly reacts with sulfur to form sulfur monochloride liquid which sinks to the bottom of the equipment, the sulfur monochloride liquid at the bottom of the sulfur storage tank is extracted through a mixing output pipeline before a pump by a knockout pump after being accumulated to a certain amount, the liquid material, namely the sulfur monochloride, in the extracted air flow mixed material is conveyed to other equipment by a liquid conveying pipeline to be used as the raw material for producing thionyl chloride, the gas in the mixed material enters the absorber again through a circulating gas pipeline to enter a new round of circulation, the treated tail gas can enter hydrochloric acid production equipment, hydrochloric acid is prepared by water absorption, and the formed product can be directly sold as the hydrochloric acid does not contain chlorine any more; the utility model discloses a p chlorobenzene formaldehyde tail gas dechlorination device, it is rational in infrastructure, be applicable to p chlorobenzene formaldehyde production process, chlorine and utilize it in can its tail gas of quick absorption has improved work efficiency, has reduced manufacturing cost.
Drawings
FIG. 1 is a schematic structural diagram of the p-chlorobenzaldehyde tail gas dechlorination device of the present invention during operation.
In the figure: 1. the device comprises a production tail gas pipeline 2, an absorber 3, a primary tail gas pipeline 4, a sulfur storage tank 5, a tail material outlet 6, a pre-pump mixing output pipeline 7, a first control valve 8, a material beating pump 9, a liquid output pipeline 10, a second control valve 11, a third control valve 12, a secondary tail gas pipeline 13, a circulating gas pipeline 14, a post-pump mixing output pipeline 15, a gas-liquid separation device 16, a second tail gas inlet 17, a first tail gas inlet 18, a tail gas outlet 19, a primary tail gas inlet 20, a secondary tail gas outlet 21 and a fourth control valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a p-chlorobenzaldehyde tail gas dechlorination device comprises an absorber 2, wherein the absorber 2 is provided with a first tail gas inlet 17, a second tail gas inlet 16 and a tail gas outlet 18, the p-chlorobenzaldehyde tail gas dechlorination device further comprises a sulfur storage tank 4, the top of the sulfur storage tank 4 is provided with a primary tail gas inlet 19 and a secondary tail gas outlet 20, and the bottom of the sulfur storage tank 4 is provided with a tail material outlet 5; first tail gas entry 17 is connected with production tail gas pipeline 1, tail gas outlet 18 is connected with a tail gas pipeline 3, a tail gas pipeline 3 is connected a tail gas entry 19, secondary tail gas outlet 20 is connected with secondary tail gas pipeline 12, tail material outlet 5 is connected with mix delivery pipe 6 before the pump, mix delivery pipe 6 before the pump and connect the entry end of material pump 8, the exit end of material pump 8 is connected with mix delivery pipe 14 behind the pump, mix delivery pipe 14 behind the pump and be connected with liquid output pipeline 9 and circulating gas pipeline 13, circulating gas pipeline 13 connects second tail gas entry 16.
The utility model discloses a chlorine removal device for p-chlorobenzaldehyde tail gas, mainly include absorber 2 and sulphur storage tank 4, the absorber 2 carries out the primary treatment to the production tail gas of input from production tail gas pipeline 1, input into sulphur storage tank 4 through once-through tail gas pipeline 3, there is the sulphur layer in the sulphur storage tank 4, when chlorine-containing tail gas passes through the sulphur layer, chlorine reacts with sulphur fast and forms the sulfur monochloride liquid, sink to the equipment bottom, the sulfur monochloride liquid of sulphur storage tank 4 bottom accumulates to be extracted by knockout pump 8 through mix output pipeline 6 before the pump after certain quantity, the liquid material in the air current mixture of extraction is sulfur monochloride and is carried to other equipment by liquid pipeline 9 and in order to be the raw materials of production thionyl chloride, the gas in the mixture gets into absorber 2 again through circulation gas pipeline 13 in order to get into the circulation of a new round, the tail gas of accomplishing the processing can get into hydrochloric acid production facility through secondary tail gas pipeline 12, hydrochloric acid is prepared by water absorption, and the formed product can be directly sold as the hydrochloric acid does not contain chlorine any more; the utility model discloses a p chlorobenzene formaldehyde tail gas dechlorination device, it is rational in infrastructure, be applicable to p chlorobenzene formaldehyde production process, chlorine and utilize it in can its tail gas of quick absorption has improved work efficiency, has reduced manufacturing cost.
Example 2
As shown in fig. 1, a p-chlorobenzaldehyde tail gas dechlorination device comprises an absorber 2, wherein the absorber 2 is provided with a first tail gas inlet 17, a second tail gas inlet 16 and a tail gas outlet 18, the p-chlorobenzaldehyde tail gas dechlorination device further comprises a sulfur storage tank 4, the top of the sulfur storage tank 4 is provided with a primary tail gas inlet 19 and a secondary tail gas outlet 20, and the bottom of the sulfur storage tank 4 is provided with a tail material outlet 5; first tail gas entry 17 is connected with production tail gas pipeline 1, tail gas outlet 18 is connected with a tail gas pipeline 3, a tail gas pipeline 3 is connected a tail gas entry 19, secondary tail gas outlet 20 is connected with secondary tail gas pipeline 12, tail material outlet 5 is connected with mix delivery pipe 6 before the pump, mix delivery pipe 6 before the pump and connect the entry end of material pump 8, the exit end of material pump 8 is connected with mix delivery pipe 14 behind the pump, mix delivery pipe 14 behind the pump and be connected with liquid output pipeline 9 and circulating gas pipeline 13, circulating gas pipeline 13 connects second tail gas entry 16.
For better effect, the post-pump mixing output pipeline 14 is connected to the liquid output pipeline 9 and the circulating gas pipeline 13 through a gas-liquid separation device 15, the post-pump mixing output pipeline 14 is connected to an input port of the gas-liquid separation device 15, a liquid output port of the gas-liquid separation device 15 is connected to the liquid output pipeline 9, a gas output port of the gas-liquid separation device 15 is connected to the circulating gas pipeline 13, and gas and liquid in the mixed material can be effectively separated through the gas-liquid separation device 15 and enter other equipment or processes through different pipelines.
For better effect, be provided with first control valve 7 on the mixed output pipeline 6 before the pump, the accessible first control valve 7 control the flow of mixing material in the mixed output pipeline 6 before the pump improves maneuverability and practicality.
For better effect, the liquid output pipeline 9 is provided with a second control valve 10, and the flow of the liquid material in the liquid output pipeline 9 can be controlled through the second control valve 10, so that the operability and the practicability are improved.
For better effect, the third control valve 11 is arranged on the circulating gas pipeline 13, and the flow of the gas material in the circulating gas pipeline 13 can be controlled through the third control valve 11, so that the operability and the practicability are improved.
For better effect, a fourth control valve 21 is disposed on the secondary exhaust pipeline 12, and the flow rate of the secondary exhaust in the secondary exhaust pipeline 12 can be controlled by the fourth control valve 21.
For better effect, the tail end of the liquid output pipeline 9 is connected with a thionyl chloride production device, and the liquid material sulfur monochloride can be conveyed to other devices to be used as a raw material for producing thionyl chloride.
For better effect, the tail end of the secondary tail gas pipeline 12 is connected with hydrochloric acid production equipment, and tail gas without chlorine gas can be input into the hydrochloric acid production equipment and is made into hydrochloric acid through water absorption.
The utility model discloses a chlorine removal device for p-chlorobenzaldehyde tail gas, mainly include absorber 2 and sulphur storage tank 4, the absorber 2 carries out the primary treatment to the production tail gas of input from production tail gas pipeline 1, input into sulphur storage tank 4 through once-through tail gas pipeline 3, there is the sulphur layer in the sulphur storage tank 4, when chlorine-containing tail gas passes through the sulphur layer, chlorine reacts with sulphur fast and forms the sulfur monochloride liquid, sink to the equipment bottom, the sulfur monochloride liquid of sulphur storage tank 4 bottom accumulates to be extracted by knockout pump 8 through mix output pipeline 6 before the pump after certain quantity, the liquid material in the air current mixture of extraction is sulfur monochloride and is carried to other equipment by liquid pipeline 9 and in order to be the raw materials of production thionyl chloride, the gas in the mixture gets into absorber 2 again through circulation gas pipeline 13 in order to get into the circulation of a new round, the tail gas of accomplishing the processing can get into hydrochloric acid production facility through secondary tail gas pipeline 12, hydrochloric acid is prepared by water absorption, and the formed product can be directly sold as the hydrochloric acid does not contain chlorine any more; the utility model discloses a p chlorobenzene formaldehyde tail gas dechlorination device, it is rational in infrastructure, be applicable to p chlorobenzene formaldehyde production process, chlorine and utilize it in can its tail gas of quick absorption has improved work efficiency, has reduced manufacturing cost.
Claims (8)
1. The utility model provides a p chlorobenzene formaldehyde tail gas dechlorination device, it includes absorber (2), its characterized in that: the absorber (2) is provided with a first tail gas inlet (17), a second tail gas inlet (16) and a tail gas outlet (18), the p-chlorobenzaldehyde tail gas dechlorination device further comprises a sulfur storage tank (4), the top of the sulfur storage tank (4) is provided with a primary tail gas inlet (19) and a secondary tail gas outlet (20), and the bottom of the sulfur storage tank (4) is provided with a tail material outlet (5); first tail gas entry (17) are connected with production tail gas pipeline (1), tail gas export (18) are connected with one tail gas pipeline (3), one tail gas pipeline (3) are connected one tail gas entry (19), secondary tail gas export (20) are connected with secondary tail gas pipeline (12), tail material export (5) are connected with mix delivery pipe way (6) before the pump, mix delivery pipe way (6) before the pump and connect the entry end of material pump (8), the exit end of material pump (8) is connected with mix delivery pipe way (14) behind the pump, mix delivery pipe way (14) behind the pump and be connected with liquid delivery pipe way (9) and circulating gas pipeline (13), circulating gas pipeline (13) are connected second tail gas entry (16).
2. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: the pump rear mixing output pipeline (14) is connected with the liquid output pipeline (9) and the circulating gas pipeline (13) through a gas-liquid separation device (15), the pump rear mixing output pipeline (14) is connected with an input interface of the gas-liquid separation device (15), a liquid output interface of the gas-liquid separation device (15) is connected with the liquid output pipeline (9), and a gas output interface of the gas-liquid separation device (15) is connected with the circulating gas pipeline (13).
3. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: and a first control valve (7) is arranged on the pre-pump mixing output pipeline (6).
4. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: and a second control valve (10) is arranged on the liquid output pipeline (9).
5. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: and a third control valve (11) is arranged on the circulating gas pipeline (13).
6. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: and a fourth control valve (21) is arranged on the secondary tail gas pipeline (12).
7. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: the tail end of the liquid output pipeline (9) is connected with thionyl chloride production equipment.
8. The p-chlorobenzaldehyde tail gas dechlorination device according to claim 1, which is characterized in that: the tail end of the secondary tail gas pipeline (12) is connected with hydrochloric acid production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021839627.3U CN213375864U (en) | 2020-08-28 | 2020-08-28 | P chlorobenzene formaldehyde tail gas dechlorination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021839627.3U CN213375864U (en) | 2020-08-28 | 2020-08-28 | P chlorobenzene formaldehyde tail gas dechlorination device |
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| Publication Number | Publication Date |
|---|---|
| CN213375864U true CN213375864U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021839627.3U Active CN213375864U (en) | 2020-08-28 | 2020-08-28 | P chlorobenzene formaldehyde tail gas dechlorination device |
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|---|---|
| CN (1) | CN213375864U (en) |
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- 2020-08-28 CN CN202021839627.3U patent/CN213375864U/en active Active
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