CN107670629B - Device for separating salt from acid gas by utilizing tail gas - Google Patents
Device for separating salt from acid gas by utilizing tail gas Download PDFInfo
- Publication number
- CN107670629B CN107670629B CN201711097937.5A CN201711097937A CN107670629B CN 107670629 B CN107670629 B CN 107670629B CN 201711097937 A CN201711097937 A CN 201711097937A CN 107670629 B CN107670629 B CN 107670629B
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- reaction kettle
- air outlet
- outlet pipe
- main
- valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/02—Feed or outlet devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Abstract
The invention discloses a device for separating salt from acid gas by utilizing tail gas, which comprises a main reaction kettle, a secondary reaction kettle and a main air inlet pipe, wherein the main reaction kettle is provided with a first air inlet pipe, the first air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the main reaction kettle, the secondary reaction kettle is provided with a second air inlet pipe, the second air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the secondary reaction kettle, the main reaction kettle is provided with a first air outlet pipe, the first air outlet pipe is communicated with the second air inlet pipe, the secondary reaction kettle is provided with a second air outlet pipe, the second air outlet pipe is communicated with the first air inlet pipe, the main reaction kettle is provided with a third air outlet pipe, the third air outlet pipe is communicated with the main air outlet pipe, the secondary reaction kettle is provided with a fourth air outlet pipe, and the fourth air outlet pipe is communicated with the main air outlet pipe. The main reaction kettle and the auxiliary reaction kettle work in turn, and salt is separated out by washing in turn, so that the working efficiency can be greatly improved.
Description
Technical Field
The invention belongs to the field of salt precipitation devices, and particularly relates to a device for precipitating salt by utilizing tail gas acid gas.
Background
The existing acid gas salting-out device uses a distillation system, waste brine neutralized by waste alkali water and hydrochloric acid in a workshop is placed in a distillation kettle, distilled water is decompressed by a finishing heating and vacuum pump, and salt is precipitated. However, this device has a certain problem: the evaporation and salt precipitation have high energy consumption and need additional steam for heating; the process flow is complicated, and the multi-step reaction is time-consuming and labor-consuming; the equipment requirement is large, and equipment is required for hydrochloric acid generation and preservation; the waste water amount is large, and the waste treatment cost is high; the safety performance is low, the reaction of the waste alkali water and the hydrochloric acid releases heat, high-temperature gas is formed, and workers are easy to scald; the pH value is difficult to control, and the proportion of the waste alkaline water to the hydrochloric acid is inconvenient to control.
Disclosure of Invention
The invention aims to provide a device for separating salt from tail gas acid gas with high working efficiency.
According to one aspect of the invention, there is provided a device for separating salt from acid gas by utilizing tail gas, comprising a main reaction kettle, a secondary reaction kettle and a main air inlet pipe,
the main reaction kettle is provided with a first air inlet pipe, a first valve is arranged on the first air inlet pipe, the first air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the main reaction kettle,
the secondary reaction kettle is provided with a second air inlet pipe, a fourth valve is arranged on the second air inlet pipe, the second air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the secondary reaction kettle,
the main reaction kettle is provided with a first air outlet pipe, a second valve is arranged on the first air outlet pipe, the first air outlet pipe is communicated with the second air inlet pipe,
the secondary reaction kettle is provided with a second air outlet pipe, a third valve is arranged on the second air outlet pipe, the second air outlet pipe is communicated with the first air inlet pipe,
the main reaction kettle is provided with a third air outlet pipe, a fifth valve is arranged on the third air outlet pipe, the third air outlet pipe is communicated with the main air outlet pipe, the auxiliary reaction kettle is provided with a fourth air outlet pipe, a sixth valve is arranged on the fourth air outlet pipe, the fourth air outlet pipe is communicated with the main air outlet pipe, the air outlet pipe is connected with a vacuumizing device,
the first valve and the second valve are in an open state, the third valve and the fourth valve are in a closed state, the mixture in the main reaction kettle reacts to separate out salt, the separated salt in the auxiliary reaction kettle is cleaned,
the first valve and the second valve are in a closed state, the third valve and the fourth valve are in an open state, the mixture in the auxiliary reaction kettle reacts to separate out salt, and the separated salt in the main reaction kettle is cleaned.
In some embodiments, a first steam pipe is arranged on the main reaction kettle, a first steam valve is arranged on the first steam pipe,
when the salt precipitation in the main reaction kettle is cleaned, the first steam valve is in an open state, steam enters the main reaction kettle through the first steam pipe to be washed, and the washed steam is discharged through the third air outlet pipe and the main air outlet pipe.
In some embodiments, a second steam pipe is arranged on the secondary reaction kettle, a second steam valve is arranged on the second steam pipe,
when the salt precipitation in the auxiliary reaction kettle is cleaned, the second steam valve is in an open state, steam enters the auxiliary reaction kettle through the second steam pipe to be washed, and the washed steam is discharged through the fourth air outlet pipe and the main air outlet pipe.
In some embodiments, a vacuum gauge is provided on the outlet tube.
The beneficial effects are that: the invention uses acid gas in the vacuum pumping process to neutralize with workshop waste alkaline water, thereby accelerating the acid gas treatment speed; the air inlet pipe needs to be under the alkaline water level, salt is formed in the pipeline by vacuumizing, and then the steam sweeping valve is additionally arranged to clean the pipeline at regular time, so that the danger is reduced; the steam valve and the vacuum degree are automatically linked, and when the vacuum degree rise rate is abnormal, the pipeline is blocked, and the steam valve is automatically opened to purge until the negative pressure is reduced.
Drawings
Fig. 1 is a schematic structural view of an apparatus for acid stripping salt using tail gas according to an embodiment of the present invention.
Detailed Description
Fig. 1 schematically shows an apparatus for acid stripping salt from tail gas according to an embodiment of the present invention. As shown in fig. 1, the device for separating salt from acid gas by utilizing tail gas comprises a main reaction kettle 1, a secondary reaction kettle 2, a main air inlet pipe 3 and a main air outlet pipe 4.
The main reactor 1 is provided with a first air inlet pipe 31. The first intake pipe 31 is provided with a first valve 311. The first air inlet pipe 31 is communicated with the main air inlet pipe 3, and the first air inlet pipe 31 stretches into liquid in the main reaction kettle 1. The secondary reaction kettle 2 is provided with a second air inlet pipe 32. The second intake pipe 32 is provided with a fourth valve 321. The second intake pipe 32 communicates with the main intake pipe 3. The first air inlet pipe 31 extends into the liquid in the secondary reaction kettle 2. The main reactor 1 is provided with a first outlet pipe 41. The first air outlet pipe 41 is provided with a second valve 411. The first air outlet pipe 41 communicates with the second air inlet pipe 32. The secondary reaction kettle 2 is provided with a second air outlet pipe 42. The second air outlet pipe 42 is provided with a third valve 421. The second air outlet pipe 42 communicates with the first air inlet pipe 31. The main reaction kettle 1 is provided with a third air outlet pipe 43. The third air outlet pipe 43 is provided with a fifth valve 431. The third air outlet pipe 43 is communicated with the main air outlet pipe 4. The secondary reaction kettle 2 is provided with a fourth air outlet pipe 44. The fourth air outlet pipe 44 is provided with a sixth valve 441. The fourth air outlet pipe 44 is communicated with the main air outlet pipe 4. The main air outlet pipe 4 is connected with a vacuumizing device 7, and salt is formed in the pipeline through vacuumizing. The first valve 311 and the second valve 411 are in an open state, the third valve 421 and the fourth valve 321 are in a closed state, the mixture in the main reaction kettle 1 reacts to separate out salt, and the salt separated out in the auxiliary reaction kettle 2 is cleaned; the first valve 311 and the second valve 411 are in a closed state, the third valve 421 and the fourth valve 321 are in an open state, the mixture in the secondary reaction kettle 2 reacts to separate out salt, and the salt separated out in the main reaction kettle 1 is cleaned. When the main reaction kettle 1 is in a state of cleaning precipitated salt, the first air outlet pipe 41 can convey hydrogen chloride gas in the main reaction kettle 1 into the auxiliary reaction kettle 2 to continue working; when the auxiliary reaction kettle 2 is in a state of cleaning and separating out salt, the second air outlet pipe 42 can convey the hydrogen chloride gas in the kettle reaction kettle into the main reaction kettle 1 to continue working. Therefore, the main reaction kettle 1 and the auxiliary reaction kettle 2 work in turn, salt is separated out by washing in turn, and the working efficiency can be greatly improved. The gas generated by the main reaction kettle 1 is discharged through the third gas outlet pipe 43 and the main gas outlet pipe 4. The gas generated by the secondary reaction kettle 2 is discharged through the main gas outlet pipe 4 by the fourth gas outlet pipe 44. The air outlet pipe is provided with a vacuum gauge 6. By observing the reading of the vacuum meter 6, whether the main reaction kettle 1 or the auxiliary reaction kettle 2 is required to be cleaned by salt precipitation can be judged. When the vacuum degree rising speed is abnormal and the pipeline is blocked, the steam valve is automatically opened to purge until the negative pressure is reduced. In order to achieve steam cleaning. The main reaction vessel 1 is provided with a first steam pipe 51. The first steam pipe 51 is provided with a first steam valve 511. When the precipitated salt in the main reaction kettle 1 is washed, the first steam valve 511 is in an open state, steam enters the main reaction kettle 1 through the first steam pipe 51 for flushing, and the flushed steam is discharged through the third air outlet pipe 43 and the main air outlet pipe 4. The secondary reaction kettle 2 is provided with a second steam pipe 52. The second steam pipe 52 is provided with a second steam valve 521. When the precipitated salt in the secondary reaction kettle 2 is washed. The second steam valve 521 is in an open state, steam enters the secondary reaction kettle 2 through the second steam pipe 52 for flushing, and the flushed steam is discharged through the fourth air outlet pipe 44 and the main air outlet pipe 4. The separated salt in the main reaction kettle 1 and the auxiliary reaction kettle 2 can be washed by steam, so that the risk is reduced. Steam for cleaning the main reaction kettle 1 is discharged through the third air outlet pipe 43 and the main air outlet pipe 4, and steam for cleaning the auxiliary reaction kettle 2 is discharged through the fourth air outlet pipe 44 and the main air outlet pipe 4. In order to realize automation, the working efficiency is further improved, the operation is simpler and more convenient, the first steam valve 511 and the second steam valve 521 are respectively electrically connected with the vacuum meter 6, and when the rising speed of the vacuum degree of the vacuum meter 6 is abnormal, the steam valve of the working reaction kettle is opened, so that the automatic cleaning is realized.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (4)
1. A method for separating salt from acid gas by utilizing tail gas is characterized by comprising a main reaction kettle, a secondary reaction kettle, a main air inlet pipe and a main air outlet pipe,
the main reaction kettle is provided with a first air inlet pipe, a first valve is arranged on the first air inlet pipe, the first air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the main reaction kettle,
the secondary reaction kettle is provided with a second air inlet pipe, a fourth valve is arranged on the second air inlet pipe, the second air inlet pipe is communicated with the main air inlet pipe, the first air inlet pipe stretches into liquid in the secondary reaction kettle,
the main reaction kettle is provided with a first air outlet pipe, a second valve is arranged on the first air outlet pipe, the first air outlet pipe is communicated with the second air inlet pipe,
the secondary reaction kettle is provided with a second air outlet pipe, a third valve is arranged on the second air outlet pipe, the second air outlet pipe is communicated with the first air inlet pipe,
the main reaction kettle is provided with a third air outlet pipe, a fifth valve is arranged on the third air outlet pipe, the third air outlet pipe is communicated with the main air outlet pipe, the auxiliary reaction kettle is provided with a fourth air outlet pipe, a sixth valve is arranged on the fourth air outlet pipe, the fourth air outlet pipe is communicated with the main air outlet pipe, the main air outlet pipe is connected with a vacuumizing device,
when the first valve and the second valve are in an open state, the third valve and the fourth valve are in a closed state, the mixture in the main reaction kettle reacts to separate out salt, the separated salt in the auxiliary reaction kettle is cleaned,
when the first valve and the second valve are in a closed state, the third valve and the fourth valve are in an open state, the mixture in the auxiliary reaction kettle reacts to separate out salt, and the separated salt in the main reaction kettle is cleaned.
2. The method for separating salt from tail gas acid gas according to claim 1, wherein a first steam pipe is arranged on the main reaction kettle, a first steam valve is arranged on the first steam pipe,
when the salt precipitation in the main reaction kettle is cleaned, the first steam valve is in an open state, steam enters the main reaction kettle through the first steam pipe to be washed, and the washed steam is discharged through the third air outlet pipe and the main air outlet pipe.
3. The method for separating salt from tail gas acid gas according to claim 1, wherein a second steam pipe is arranged on the secondary reaction kettle, a second steam valve is arranged on the second steam pipe,
when the salt precipitation in the auxiliary reaction kettle is cleaned, the second steam valve is in an open state, steam enters the auxiliary reaction kettle through the second steam pipe to be washed, and the washed steam is discharged through the fourth air outlet pipe and the main air outlet pipe.
4. The method for salting out by utilizing tail gas acid according to claim 1, wherein a vacuum gauge is arranged on the air outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097937.5A CN107670629B (en) | 2017-11-09 | 2017-11-09 | Device for separating salt from acid gas by utilizing tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097937.5A CN107670629B (en) | 2017-11-09 | 2017-11-09 | Device for separating salt from acid gas by utilizing tail gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107670629A CN107670629A (en) | 2018-02-09 |
| CN107670629B true CN107670629B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711097937.5A Active CN107670629B (en) | 2017-11-09 | 2017-11-09 | Device for separating salt from acid gas by utilizing tail gas |
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Citations (15)
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| CN105907481A (en) * | 2016-06-23 | 2016-08-31 | 防城港市中能生物能源投资有限公司 | Alternating serial reaction device for producing biodiesel from high-pressure gas-phase methanol |
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| CN206240484U (en) * | 2016-12-06 | 2017-06-13 | 上海宏韵新型建材有限公司 | A kind of intensive polycarboxylate water-reducer production equipment |
| CN206587734U (en) * | 2017-03-21 | 2017-10-27 | 河北东华舰化工有限公司 | A kind of chloroacetate reaction kettle system of accident disposal |
| CN207521018U (en) * | 2017-11-09 | 2018-06-22 | 大丰鑫源达化工有限公司 | A kind of device using tail gas acid gas analysis salt |
-
2017
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Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07185256A (en) * | 1993-12-27 | 1995-07-25 | Ebara Corp | Dry adsorption treatment method and apparatus for waste gas |
| CN202113847U (en) * | 2011-05-06 | 2012-01-18 | 泾县宏发化工有限公司 | Chlorine reaction absorption system with double reactors |
| CN102698558A (en) * | 2012-04-09 | 2012-10-03 | 常州明成翔锐环保科技有限公司 | Device and method for adsorbing, recycling and treating organic waste gases efficiently |
| CN202538615U (en) * | 2012-05-07 | 2012-11-21 | 成都玉龙化工有限公司 | Gas washing recovery device of ammonia water storage tank |
| CN202621015U (en) * | 2012-06-08 | 2012-12-26 | 武汉钢铁(集团)公司 | Sintered smoke absorption device |
| CN102874897A (en) * | 2012-10-17 | 2013-01-16 | 广州市太和电路板有限公司 | Alternate concatenation application process and device of ion exchange resin |
| CN103830998A (en) * | 2012-11-20 | 2014-06-04 | 江苏风日石英科技有限公司 | Acid-containing gas neutralizing apparatus |
| CN205152135U (en) * | 2015-11-26 | 2016-04-13 | 河北三楷深发科技股份有限公司 | Esterification reaction absorbing device of production polycarboxylate water -reducing agent |
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| CN107670629A (en) | 2018-02-09 |
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