CN109589743A - A kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device - Google Patents
A kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device Download PDFInfo
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- CN109589743A CN109589743A CN201811504588.9A CN201811504588A CN109589743A CN 109589743 A CN109589743 A CN 109589743A CN 201811504588 A CN201811504588 A CN 201811504588A CN 109589743 A CN109589743 A CN 109589743A
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- gas
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- desulfurizer
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005262 decarbonization Methods 0.000 title claims abstract description 9
- 238000000746 purification Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 238000000926 separation method Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 66
- 238000010521 absorption reaction Methods 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
-
- 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
- B01D53/04—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 with stationary adsorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
Landscapes
- 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)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device, by adding washing after original drop a hint, and gas-liquid separation is carried out to vacuum pump return water, pass through the U-shaped curved control water sealing (sealing water) pipe liquid level of separator, dropping a hint by being come out at the top of separator after gas-water separation, rear workshop section's water scrubber, desulfurizer are sequentially entered together, washing, purifying is carried out into water scrubber, the sour gas such as the H2S in dropping a hint are purified by activated carbon adsorption, effectively to purify emptying gas, reduction environment influence.
Description
Technical field
The present invention relates to chemical production field more particularly to a kind of pressure swing adsorption decarbonization emptying gas purifying method and its purifications
Device.
Background technique
With the shortage of world energy sources, various countries and every profession and trade increasingly pay attention to the development and utilization of Low grade resource, and
Various countries the improvement of environment is required it is also higher and higher so that adsorption separation technology steel and iron industry, gas industry, electronics industry,
It is paid more and more attention in petroleum and chemical engineering industry, the significant development of adsorbent, is established for the large-scale adsorptive separation technology of continuous operation
Technical foundation, preceding workshop section gas cleaning plant of the pressure swing adsorption decarbonization as Ammonia Production are determined, gas separation is by pressure
Absorption and regeneration are realized in the variation of power, using vacuum pumping negative pressure, so that adsorbent is obtained regeneration parsing, in the mistake that parsing evacuates
Cheng Zhonghui generation largely is dropped a hint (reverse gas and take out air), drop a hint in contain the sour gas such as high concentration CO 2, H2S such as
It is not subject to Recovery Purifying, not only environment is caused to influence, but also peripheral equipment is caused to corrode.
Existing production by pressure swing adsorption device inverse put feed channel is directly to discharge to day, effectively cannot purify and be returned
It receives, directly emptying not only causes surrounding enviroment to pollute, but also since the sour gas in dropping a hint has corrosivity to equipment
There are some potential safety problemss for safe operation；And reverse gas with smoke air be not together with discharge；And existing transformation
When absorption replacement active carbon, it is necessary to which scene emptying and vacuum pump return water shortcut cause certain influence to environment, simultaneously
Vacuum pump return water direct emission returns recirculated water (not carrying out gas recycling), not only produces some shadows to discharge ambient enviroment
It rings, and some influences (pH value is weakly acidic) is also produced on the water quality of recirculated water, therefore, solve the problems, such as this kind of seem
It is particularly important.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device,
Gas-liquid separation is carried out by adding washing after original drop a hint, and to vacuum pump return water, passes through the U-shaped curved control water of separator
Tube sealing liquid level, dropping a hint by coming out at the top of separator after gas-water separation, sequentially enters rear workshop section's water scrubber, desulfurizer together,
Washing, purifying is carried out into water scrubber, the sour gas such as the H2S in dropping a hint are purified by activated carbon adsorption, effectively to purify
Emptying gas, reducing environment influences.
To solve the above problems, the present invention provides a kind of pressure swing adsorption decarbonizations to be vented gas purifying method, including following step
It is rapid:
Step 1: inverse put generation gas enters emptying general pipeline after pressure-swing absorption apparatus absorption unstripped gas；
Step 2: pressure-swing absorption apparatus adsorbs unstripped gas and enters emptying general pipeline by evacuating the gas that pump depletion generates；
Step 3: return pump uses liquid-ring type, contains part CO in vacuum pump return water2Equal gases, carry out gas-liquid by separator
Separation, the gas after parsing separation enter emptying general pipeline；
Step 4: dropping a hint into water scrubber after converging, demineralized water by water scrubber top spray and under, inversely connect with dropping a hint
Touching, to absorb the sour gas for the middle remnants that drop a hint, and the acid wastewater transportation of generation is recycled into sewage-treatment plant
Processing；
Step 5: the gas after water scrubber washing enters desulfurizer, after the absorption layer by layer by active carbon in desulfurizer, so that
H2S content is to micro, to reach the standard of qualified discharge.
A kind of emptying air purifying apparatus includes emptying general pipeline, separator, water scrubber and desulfurizer, pressure-variable adsorption is filled
It sets and the gas and pressure-swing absorption apparatus absorption unstripped gas that inverse put generates after absorption unstripped gas is passed through into evacuation pump depletion generation
Gas is directed respectively into emptying general pipeline, and the other end of the emptying general pipeline is connected to the bottom of water scrubber, the water scrubber with
It is provided with pipeline between desulfurizer, and the top of the water scrubber is provided with spray head, the top of the water scrubber and desulfurizer
Portion is provided with blow-down pipe, the return water of vacuum pump is received by the separator, and the gas after gas-liquid separation is passed through pipeline
It is transferred in emptying general pipeline.
Further improvement lies in that: butterfly valve, under normal circumstances, water scrubber are provided on the blow-down pipe on the water scrubber
On blow-down pipe be it is closed, when desulfurizer outlet H2S content be more than or equal to 1mg/m3When, desulfurizer desulfurization effect is not very
It is good, active carbon will be replaced at this time, when traditional pressure-variable adsorption replaces active carbon, it is necessary to scene emptying and vacuum pump return water
Shortcut causes certain influence to environment, and the present invention closes the blow-down pipe on desulfurizer, opens water scrubber top blow-down pipe and is
Can, it is easy to operate.
Further improvement lies in that: the return pump is using liquid-ring type.
Further improvement lies in that: active carbon is provided in the desulfurizer for adsorbed gas.
Further improvement lies in that: it is provided with recovery tube in the water scrubber and is used to recycle demineralized water and emptying gas contact institute
The acid water of generation, and acid water is imported in recyclable device by the recovery tube and carries out sewage treatment.
Further improvement lies in that: the separator goes circulating water pipe to be set as U-shaped.
The beneficial effects of the present invention are: the present invention is washed by adding after original drop a hint, and to vacuum pump return water
Gas-liquid separation is carried out, circulating water pipe is removed by the way that separator is U-shaped and controls liquid level, dropping a hint by the top of separator after gas-water separation
Out, rear workshop section's water scrubber, desulfurizer are sequentially entered together, carry out washing, purifying into water scrubber, it is net by activated carbon adsorption
Change the sour gas such as the H2S in dropping a hint, effectively to purify emptying gas, reducing environment influences.
The present invention can be purified effectively and drop a hint and be recycled, moreover it is possible to exclude some potential safety problems；This hair simultaneously
Bright reverse gas with take out air can and together with discharge, do not influence pressure-variable adsorption inverse put effect, from without increase vacuum pumping
Empty load passes through Recovery Purifying by transformation emptying gas on the contrary, effectively reduces pernicious gas, purified peripheral ring
Border, to reach the requirement of safety and environmental protection, and operating cost is lower；It is given back by the gas parsed to vacuum pump return water
Purified treatment is received, to solve vacuum pump return water quality problem.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Fig. 2 is structure chart of the invention.
Wherein: 1- is vented general pipeline, 2- separator, 3- water scrubber, 4- desulfurizer, 5- spray head, 6- blow-down pipe, 7- vacuum
Pump, 8- butterfly valve, 9- recovery tube.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is further described below in conjunction with embodiment, the present embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention..
Embodiment one
As shown in Figure 1, present embodiments providing a kind of pressure swing adsorption decarbonization emptying gas purifying method, comprising the following steps:
Step 1: inverse put generation gas enters emptying general pipeline after pressure-swing absorption apparatus absorption unstripped gas；
Step 2: pressure-swing absorption apparatus adsorbs unstripped gas and enters emptying general pipeline by evacuating the gas that pump depletion generates；
Step 3: return pump uses liquid-ring type, contains part CO in vacuum pump return water2Equal gases, carry out gas-liquid by separator
Separation, the gas after parsing separation enter emptying general pipeline；
Step 4: dropping a hint into water scrubber after converging, demineralized water by water scrubber top spray and under, inversely connect with dropping a hint
Touching, to absorb the sour gas for the middle remnants that drop a hint, and the acid wastewater transportation of generation is recycled into sewage-treatment plant
Processing；
Step 5: the gas after water scrubber washing enters desulfurizer, after the absorption layer by layer by active carbon in desulfurizer, so that
H2S content is to micro, to reach the standard of qualified discharge.
The present invention carries out gas-liquid separation by adding washing after original drop a hint, and to vacuum pump return water, by dividing
U-shaped from device to remove circulating water pipe to control liquid level, dropping a hint after gas-water separation is come out by separator top, after sequentially entering together
Workshop section's water scrubber, desulfurizer carry out washing, purifying into water scrubber, purify the acid such as the H2S in dropping a hint by activated carbon adsorption
Property gas, effectively to purify emptying gas, reducing environment influences.
The following table is the technological parameter table of comparisons of the invention after preceding and transformation is transformed:
| Project | Before transformation | After transformation |
| Drop a hint H2S content (mg/m3) | 13 | It is micro |
Embodiment two
It include emptying general pipeline 1, separator 2, water scrubber as shown in Fig. 2, present embodiments providing a kind of emptying air purifying apparatus
3 and desulfurizer 4, pressure-swing absorption apparatus will be adsorbed into gas that inverse put after unstripped gas generates and pressure-swing absorption apparatus adsorbs raw material
Gas is directed respectively into emptying general pipeline 1 by evacuating the gas that pump depletion generates, and the other end of the emptying general pipeline 1 is connected to water
The bottom of tower 3 is washed, pipeline is provided between the water scrubber 3 and desulfurizer 4, and the top of the water scrubber 3 is provided with spray
Head 5 is drenched, the top of the water scrubber 3 and desulfurizer 4 is provided with blow-down pipe 6, receives vacuum pump 7 by the separator 2
Return water, and the gas after gas-liquid separation is transferred in emptying general pipeline 1 by pipeline.On the blow-down pipe on the water scrubber 3
Be provided with butterfly valve 8, under normal circumstances, blow-down pipe on water scrubber be it is closed, when desulfurizer outlet, H2S content is more than or equal to
1mg/m3When, desulfurizer desulfurization effect is not very well, active carbon will to be replaced at this time, when traditional pressure-variable adsorption replaces active carbon
It waits, it is necessary to which scene emptying and vacuum pump return water shortcut cause certain influence to environment, and the present invention closes on desulfurizer
Blow-down pipe opens water scrubber top blow-down pipe, easy to operate.The return pump is using liquid-ring type.In the desulfurizer 4
Active carbon is provided with for adsorbed gas.It is provided with recovery tube 9 in the water scrubber 3 and is connect for recycling demineralized water with emptying gas
Acid water caused by touching, and acid water is imported in recyclable device by the recovery tube 9 and carries out sewage treatment.The separator
2 go the circulating water pipe to be set as U-shaped.
The present invention can be purified effectively and drop a hint and be recycled, moreover it is possible to exclude some potential safety problems；This hair simultaneously
Bright reverse gas with take out air can and together with discharge, do not influence pressure-variable adsorption inverse put effect, from without increase vacuum pumping
Empty load passes through Recovery Purifying by transformation emptying gas on the contrary, effectively reduces pernicious gas, purified peripheral ring
Border, to reach the requirement of safety and environmental protection, and operating cost is lower；It is given back by the gas parsed to vacuum pump return water
Purified treatment is received, to solve vacuum pump return water quality problem.
Claims (7)
1. a kind of pressure swing adsorption decarbonization is vented gas purifying method, which comprises the following steps:
Step 1: inverse put generation gas enters emptying general pipeline after pressure-swing absorption apparatus absorption unstripped gas；
Step 2: pressure-swing absorption apparatus adsorbs unstripped gas and enters emptying general pipeline by evacuating the gas that pump depletion generates；
Step 3: return pump uses liquid-ring type, contains part CO in vacuum pump return water2Equal gases carry out gas-liquid point by separator
From the gas after parsing separation enters emptying general pipeline；
Step 4: dropping a hint into water scrubber after converging, demineralized water by water scrubber top spray and under, inversely connect with dropping a hint
Touching, to absorb the sour gas for the middle remnants that drop a hint, and the acid wastewater transportation of generation is recycled into sewage-treatment plant
Processing；
Step 5: the gas after water scrubber washing enters desulfurizer, after the absorption layer by layer by active carbon in desulfurizer, so that H2S
Content is to micro, to reach the standard of qualified discharge.
2. a kind of emptying air purifying apparatus, it is characterised in that: include to be vented general pipeline (1), separator (2), water scrubber (3) and take off
The gas and pressure-swing absorption apparatus that inverse put after absorption unstripped gas generates are adsorbed unstripped gas by pressure-swing absorption apparatus by sulphur slot (4)
It is directed respectively into emptying general pipeline (1) by evacuating the gas that pump depletion generates, the other end of emptying general pipeline (1) is connected to
The bottom of water scrubber (3) is provided with pipeline between the water scrubber (3) and desulfurizer (4), and in the upper of the water scrubber (3)
Portion is provided with spray head (5), blow-down pipe (6) is provided at the top of the water scrubber (3) and desulfurizer (4), by the separation
Gas after gas-liquid separation is transferred in emptying general pipeline (1) by device (2) to receive the return water of vacuum pump (7) by pipeline.
3. a kind of emptying air purifying apparatus according to claim 2, it is characterised in that: putting on the water scrubber (3)
Butterfly valve (8) are provided on blank pipe, under normal circumstances, the blow-down pipe on water scrubber is closed.
4. a kind of emptying air purifying apparatus according to claim 2, it is characterised in that: the return pump uses liquid-ring type
's.
5. a kind of emptying air purifying apparatus according to claim 2, it is characterised in that: be provided in the desulfurizer (4)
Active carbon is used to adsorbed gas.
6. a kind of emptying air purifying apparatus according to claim 2, it is characterised in that: be provided in the water scrubber (3)
Recovery tube (9) is used to recycle demineralized water and contacts generated acid water with emptying gas, and by the recovery tube (9) by acid water
It imports in recyclable device and carries out sewage treatment.
7. a kind of emptying air purifying apparatus according to claim 2, it is characterised in that: the separator (2) goes to recycle
Water pipe is set as U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504588.9A CN109589743A (en) | 2018-12-10 | 2018-12-10 | A kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504588.9A CN109589743A (en) | 2018-12-10 | 2018-12-10 | A kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device |
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| Publication Number | Publication Date |
|---|---|
| CN109589743A true CN109589743A (en) | 2019-04-09 |
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ID=65962280
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504588.9A Pending CN109589743A (en) | 2018-12-10 | 2018-12-10 | A kind of pressure swing adsorption decarbonization emptying gas purifying method and its purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392800A (en) * | 2020-04-02 | 2020-07-10 | 中国石油集团渤海钻探工程有限公司 | Comprehensive treatment device for flowback waste gas of oil and gas well |
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| CN111392800A (en) * | 2020-04-02 | 2020-07-10 | 中国石油集团渤海钻探工程有限公司 | Comprehensive treatment device for flowback waste gas of oil and gas well |
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