CN114191931A - Condensation, absorption and adsorption comprehensive treatment and recovery process - Google Patents
Condensation, absorption and adsorption comprehensive treatment and recovery process Download PDFInfo
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- CN114191931A CN114191931A CN202111455146.1A CN202111455146A CN114191931A CN 114191931 A CN114191931 A CN 114191931A CN 202111455146 A CN202111455146 A CN 202111455146A CN 114191931 A CN114191931 A CN 114191931A
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- gas
- absorption
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- adsorption
- activated carbon
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 67
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 35
- 238000009833 condensation Methods 0.000 title claims abstract description 16
- 230000005494 condensation Effects 0.000 title claims abstract description 16
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000007789 gas Substances 0.000 claims abstract description 47
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 239000000112 cooling gas Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 9
- 230000002745 absorbent Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a condensation, absorption and adsorption comprehensive treatment and recovery process, which comprises the following steps: the method comprises the following steps: low-temperature solution absorption: step two: pre-cooling gas; step three: gas-liquid separation; step four: gas treatment: the activated carbon adsorption equipment is cooled by the refrigerating unit, so that the adsorption equipment works at 15-25 ℃, and the absorption rate is improved. The gas after the active carbon adsorption treatment is discharged through a fan; step five: carrying out circular treatment; according to the invention, before cooling treatment, precooling is carried out, part of impurities are absorbed by the absorption solution, then gas-liquid separation is carried out, the separated gas enters the activated carbon treatment equipment for cooling treatment, and the gas is crystallized and adsorbed on the activated carbon treatment equipment after cooling.
Description
Technical Field
The invention relates to the field of environmental protection waste gas treatment, in particular to a condensation, absorption and adsorption comprehensive treatment and recovery process.
Background
In the existing waste gas treatment process, gas needs to be cooled under partial conditions, and as volatile gas forms liquid and solid under a low-temperature state according to different chemical properties and physical properties, a heat exchanger or an exchanger is easily blocked, so that equipment cannot run and cannot continuously work, crystals are difficult to remove, and finally, only a small amount of crystals are recovered and discharged unstably, so that the comprehensive treatment and recovery process for condensation, absorption and adsorption is provided.
Disclosure of Invention
The invention aims to provide a condensation, absorption and adsorption comprehensive treatment and recovery process, which aims to solve the problems that crystals are easy to block a heat exchanger and are difficult to remove in the existing treatment process.
In order to achieve the purpose, the invention provides the following technical scheme: the condensation, absorption and adsorption comprehensive treatment and recovery process comprises the following steps:
the method comprises the following steps: low-temperature solution absorption: introducing gas into an absorption tower to be absorbed by absorption solution;
step two: pre-cooling gas: the gas generated after the liquid absorption is induced into a heat exchanger for precooling;
step three: gas-liquid separation: the precooled gas enters a gas-liquid separator for separation, the gas is separated from the absorbent, the separated gas enters activated carbon adsorption equipment, and the separated absorbent flows back to the absorption tower through a pipeline;
step four: gas treatment: the activated carbon adsorption equipment is cooled by the refrigerating unit, so that the adsorption equipment works at 15-25 ℃, and the absorption rate is improved. The gas after the active carbon adsorption treatment is discharged through a fan;
step five: and (3) circulating treatment: after the activated carbon is adsorbed and saturated, heating treatment is carried out; resolving the activated carbon by a vacuum unit; the analyzed gas is cooled and then led to a cryogenic unit for treatment, and the treated gas returns to an induced air inlet to form circulation.
The absorption tower comprises an absorption tower body, wherein a water spraying system is arranged in the absorption tower body, a demisting layer is arranged at the top of the absorption tower body, water molecules are cut through the demisting layer, the water molecules discharged from the gas return to the absorption tower, and an absorbent adopted by an absorption solution of the absorption tower body is low-purity propylene oxide.
The temperature of the gas after precooling by the heat exchanger is 45 degrees, and a liquid outlet arranged at the bottom of the heat exchanger is used for refluxing a small amount of liquid generated in the heat exchange process to the absorption tower.
The active carbon adsorption equipment comprises 2-8 groups of active carbon box bodies, the active carbon box bodies are all connected with a fan, wherein 1-4 groups of active carbon box bodies are used for adsorption, the rest 1-4 groups of active carbon box bodies are used for analysis, and the two parts of active carbon box bodies are used alternately.
The vacuum unit comprises a vacuum pump, two parts of activated carbon boxes are connected with the same vacuum unit through a pipeline, one-way valves are connected between the two parts of activated carbon boxes and the vacuum unit, the opening and closing of the pipeline are controlled, and an outlet of the vacuum pump leads to an inlet of the absorption tower to be connected through the pipeline.
Wherein, the inlet end and the outlet end of the two groups of activated carbon box bodies are both connected with one-way valves.
Wherein, including one set of heating machine, one set of high temperature refrigerator, one set of deep cooling machine in the refrigerating unit, the gaseous entering cryrogenic machine that comes out from the active carbon box body cools down, and the heating machine passes through pipe connection absorption tower, active carbon box body, and the high temperature refrigerator passes through pipe connection absorption tower, heat exchanger, active carbon box body.
The heating temperature of the heating machine is 50-80 ℃, the refrigerating temperature of the high-temperature refrigerating machine is 0-minus 5 ℃, and the cooling temperature of the deep refrigerating machine is 0-minus 120 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. before cooling treatment, precool and absorb partial impurity through absorption solution, then carry out gas-liquid separation, gas after the separation gets into active carbon treatment equipment and carries out cooling treatment, and gas is crystallized and is adsorbed on active carbon treatment equipment after the cooling, and during the use, not only the condition of jam can not appear, and the treatment effect to waste gas is more outstanding than current technology moreover.
2. The active carbon treatment equipment adopts two parts of active carbon box bodies, and combines the arrangement of a refrigerating unit and a one-way valve to form two parts of active carbon box bodies which can be alternately used, wherein the two parts of active carbon box bodies are controlled by the opening and closing of the one-way valve to form a loop for ventilating with the refrigerating unit, and when one part of the active carbon box bodies analyzes gas, the other part of the active carbon box bodies works.
3. Combine the vacuum unit, the integrated configuration of vacuum pump and check valve promptly, outwards appear gaseous structure through check valve control, the vacuum pump is bled, appear internal gas, the check valve can cooperate with two sets of activated carbon box with the combination of vacuum pump equally, open the pipeline that needs carry out the analytic activated carbon box through check valve control, the pipeline that the opposite side carried out gaseous absorptive activated carbon box then seals, combine with two sets of activated carbon box, can connect continuous work, work efficiency is higher.
Drawings
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic diagram of the connection between the activated carbon box body and the vacuum unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the condensation, absorption and adsorption comprehensive treatment and recovery process comprises the following steps:
the method comprises the following steps: low-temperature solution absorption: introducing gas into an absorption tower to be absorbed by absorption solution;
step two: pre-cooling gas: the gas generated after the liquid absorption is induced into a heat exchanger for precooling;
step three: gas-liquid separation: the precooled gas enters a gas-liquid separator for separation, the gas is separated from the absorbent, the separated gas enters activated carbon adsorption equipment, and the separated absorbent flows back to the absorption tower through a pipeline;
step four: gas treatment: the activated carbon adsorption equipment is cooled by the refrigerating unit, so that the adsorption equipment works at 15-25 ℃, and the absorption rate is improved. The gas after the active carbon adsorption treatment is discharged through a fan;
step five: and (3) circulating treatment: after the activated carbon is adsorbed and saturated, heating treatment is carried out; resolving the activated carbon by a vacuum unit; the analyzed gas is cooled and then led to a cryogenic unit for treatment, and the treated gas returns to an induced air inlet to form circulation.
Wherein, including water sprinkler system in the absorption tower, the top of absorption tower is provided with the defogging layer, cuts the molecule through the defogging layer, and gas exhaust water molecule returns the absorption tower, the absorbent that absorption tower absorption solution adopted is low-purity propylene oxide, and the water smoke in the defroster separation gas when avoiding gas discharge takes away partial absorption solution.
The temperature of the gas after precooling by the heat exchanger is 45 degrees, and a liquid outlet arranged at the bottom of the heat exchanger is used for refluxing a small amount of liquid generated in the heat exchange process to the absorption tower.
The active carbon adsorption equipment comprises 2-8 groups of active carbon box bodies, wherein the active carbon box bodies are all connected with a fan, 1-4 groups of active carbon box bodies are used for adsorption, the rest 1-4 groups of active carbon box bodies are used for desorption, and the two parts of active carbon box bodies are alternately used;
the gas-liquid separation device comprises a refrigeration unit, a vacuum unit, a gas-liquid separator, a vacuum unit, a gas-liquid separator and a gas-liquid separator.
The vacuum unit comprises a vacuum pump, two parts of activated carbon boxes are connected with the same vacuum unit through a pipeline, one-way valves are connected between the two parts of activated carbon boxes and the vacuum unit, the opening and closing of the pipeline are controlled, the outlet of the vacuum pump leads to the inlet connection of the absorption tower through the pipeline, the vacuum unit is formed by connecting the one-way valves and the vacuum pump with the pipeline, the flow direction of gas in the pipeline is controlled by opening and closing the one-way valves, and the activated carbon boxes connected with the vacuum pump are controlled by opening and closing corresponding one-way valves.
Wherein, including a set of heat engine, a set of high temperature refrigerator, a set of deep cooling machine in the refrigerating unit, the gaseous entering cryrogenic machine that separates out from the active carbon box cools down, and the heat engine passes through pipe connection absorption tower, active carbon box, and the high temperature refrigerator passes through pipe connection absorption tower, heat exchanger, active carbon box, the heating temperature of heat engine is 50 ℃ -80 ℃, the high temperature refrigerator refrigeration temperature is 0-/-5 °, the cooling temperature of deep cooling machine is 0-/-120 °.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Condensation, absorption comprehensive treatment recovery technology, its characterized in that includes:
the method comprises the following steps: low-temperature solution absorption: introducing gas into an absorption tower to be absorbed by absorption solution;
step two: pre-cooling gas: the gas generated after the liquid absorption is induced into a heat exchanger for precooling;
step three: gas-liquid separation: the precooled gas enters a gas-liquid separator for separation, the gas is separated from the absorbent, the separated gas enters activated carbon adsorption equipment, and the separated absorbent flows back to the absorption tower through a pipeline;
step four: gas treatment: the activated carbon adsorption equipment is cooled by the refrigerating unit, so that the adsorption equipment works at 15-25 ℃, and the absorption rate is improved. The gas after the active carbon adsorption treatment is discharged through a fan;
step five: and (3) circulating treatment: after the activated carbon is adsorbed and saturated, heating treatment is carried out; resolving the activated carbon by a vacuum unit; the analyzed gas is cooled and then led to a cryogenic unit for treatment, and the treated gas returns to an induced air inlet to form circulation.
2. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 1, which is characterized in that:
the absorption tower comprises a water spraying system, the top of the absorption tower is provided with a demisting layer, water molecules are cut through the demisting layer, the gas exhaust water molecules return to the absorption tower, and the absorption tower absorbs low-purity propylene oxide as an absorbent.
3. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 1, which is characterized in that:
the temperature of the gas after precooling by the heat exchanger is 45 degrees, and a liquid outlet arranged at the bottom of the heat exchanger is used for refluxing a small amount of liquid generated in the heat exchange process to the absorption tower.
4. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 1, which is characterized in that:
the active carbon adsorption equipment comprises 2-8 groups of active carbon box bodies, wherein the active carbon box bodies are all connected with a fan, 1-4 groups of active carbon box bodies are adsorbed, the rest 1-4 groups of active carbon box bodies are analyzed, and the two parts of active carbon box bodies are alternately used.
5. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 4, characterized in that:
the vacuum unit comprises a vacuum pump, two parts of activated carbon boxes are connected with the same vacuum unit through a pipeline, one-way valves are connected between the two parts of activated carbon boxes and the vacuum unit to control the opening and closing of the pipeline, and the outlet of the vacuum pump leads to the inlet of the absorption tower to be connected through the pipeline.
6. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 4, characterized in that:
the air inlet end and the air outlet end of the activated carbon box body of the two parts are both connected with one-way valves.
7. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 4, characterized in that:
the refrigerating unit is internally provided with a set of heating machine, a set of high-temperature refrigerating machine and a set of deep refrigerating machine, gas separated out from the activated carbon box body enters the deep refrigerating machine to be cooled, the heating machine is connected with the absorption tower and the activated carbon box body through pipelines, and the high-temperature refrigerating machine is connected with the absorption tower, the heat exchanger and the activated carbon box body through pipelines.
8. The condensation, absorption and adsorption comprehensive treatment and recovery process according to claim 7, characterized in that:
the heating temperature of the heating machine is 50-80 ℃, the refrigerating temperature of the high-temperature refrigerating machine is 0-minus 5 ℃, and the cooling temperature of the deep refrigerating machine is 0-minus 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455146.1A CN114191931A (en) | 2021-12-01 | 2021-12-01 | Condensation, absorption and adsorption comprehensive treatment and recovery process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455146.1A CN114191931A (en) | 2021-12-01 | 2021-12-01 | Condensation, absorption and adsorption comprehensive treatment and recovery process |
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| Publication Number | Publication Date |
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| CN114191931A true CN114191931A (en) | 2022-03-18 |
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| CN202111455146.1A Pending CN114191931A (en) | 2021-12-01 | 2021-12-01 | Condensation, absorption and adsorption comprehensive treatment and recovery process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262924A (en) * | 2005-08-08 | 2008-09-10 | 琳德股份有限公司 | Method and system for purifying a gas |
| CN102512906A (en) * | 2011-12-13 | 2012-06-27 | 上海神明控制工程有限公司 | Energy-saving and environment-protecting oil gas recovering and processing method and device |
| CN104307301A (en) * | 2014-07-24 | 2015-01-28 | 襄阳航力机电技术发展有限公司 | A butadiene tail gas recovery device and a recovery method thereof |
| CN206103392U (en) * | 2016-09-22 | 2017-04-19 | 北京泷涛环境科技有限公司 | Humid tropical vapor recovery system and purifier |
| CN106731445A (en) * | 2017-01-26 | 2017-05-31 | 上海聚宸新能源科技有限公司 | A kind of adsorption condensing formula device for recovering oil and gas and oil-gas recovery method for effectively preventing from adsorbing temperature rise |
| CN111171867A (en) * | 2020-02-14 | 2020-05-19 | 郑州永邦电气有限公司 | Oil gas recovery method |
-
2021
- 2021-12-01 CN CN202111455146.1A patent/CN114191931A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262924A (en) * | 2005-08-08 | 2008-09-10 | 琳德股份有限公司 | Method and system for purifying a gas |
| CN102512906A (en) * | 2011-12-13 | 2012-06-27 | 上海神明控制工程有限公司 | Energy-saving and environment-protecting oil gas recovering and processing method and device |
| CN104307301A (en) * | 2014-07-24 | 2015-01-28 | 襄阳航力机电技术发展有限公司 | A butadiene tail gas recovery device and a recovery method thereof |
| CN206103392U (en) * | 2016-09-22 | 2017-04-19 | 北京泷涛环境科技有限公司 | Humid tropical vapor recovery system and purifier |
| CN106731445A (en) * | 2017-01-26 | 2017-05-31 | 上海聚宸新能源科技有限公司 | A kind of adsorption condensing formula device for recovering oil and gas and oil-gas recovery method for effectively preventing from adsorbing temperature rise |
| CN111171867A (en) * | 2020-02-14 | 2020-05-19 | 郑州永邦电气有限公司 | Oil gas recovery method |
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