CN205412605U - Pressure swing adsorption combines alternating temperature to adsorb device of degree of depth desorption hydrogen sulfide - Google Patents
Pressure swing adsorption combines alternating temperature to adsorb device of degree of depth desorption hydrogen sulfide Download PDFInfo
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- CN205412605U CN205412605U CN201620258670.8U CN201620258670U CN205412605U CN 205412605 U CN205412605 U CN 205412605U CN 201620258670 U CN201620258670 U CN 201620258670U CN 205412605 U CN205412605 U CN 205412605U
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Abstract
The utility model discloses a pressure swing adsorption combines alternating temperature to adsorb device of degree of depth desorption hydrogen sulfide, including pressure swing adsorption unit, alternating temperature adsorption equipment, pressure swing adsorption unit's intake pipe links to each other with the admission line, pressure swing adsorption unit is at least including a pressure swing adsorption tower, the inlet end of pressure swing adsorption unit's the rich H2S stripping gas booster fan of pressure swing adsorption stripping gas union coupling, the cross unit is connected through the cross unit link to the end of giving vent to anger of rich H2S stripping gas booster fan, pressure swing adsorption unit's outlet duct links to each other with alternating temperature adsorption equipment's intake pipe, alternating temperature adsorption equipment includes two alternating temperature adsorption towers, two alternating temperature adsorption towers adsorb and resolving hocket, the alternating temperature adsorption tower even has the accuse temperature steam conduit that is used for the alternating temperature adsorption tower to intensify, lower the temperature, and alternating temperature adsorption equipment's alternating temperature adsorbs stripping gas pipe connection vary voltage adsorption equipment's intake pipe, and product trachea way is connected to alternating temperature adsorption equipment's the pipeline of giving vent to anger.
Description
Technical field
This utility model relates to gas sweetening and purifies field, and a kind of pressure-variable adsorption combines the device of temp.-changing adsorption deep removal hydrogen sulfide.
Background technology
Along with industrial expansion, environmental problem is the most increasingly severe, and wherein sulphur pollution is one of pollution problem of allowing of no optimist most；In Chemical Manufacture, the gas combustion of band sulfur is the main path producing sulphur pollution, sulphur pollution to be contained, it is necessary to band sulfur fuel gas in Chemical Manufacture is carried out desulfurization process.
In existing gas sweetening technology, typically first pass around chemical absorption method, all gas is passed through in absorbing liquid, by H2S absorbs in solution, and by delivering to Cross unit after hot recycling, residual gas enters back into fine de-sulfur link；And in actual production, produce and arrived certain scale, need tolerance to be processed huge, then the circular flow of the chemical solvent of needs becomes greatly the most accordingly, the energy consumption driving chemical solvent to circulate uprises accordingly；Mass air flow can take away part chemical solvent simultaneously, causes chemical solvent to lose, and adds cost for desulfurization workshop section in turn.
Summary of the invention
This utility model provides a kind of pressure-variable adsorption to combine the device of temp.-changing adsorption deep removal hydrogen sulfide, can first carry out pressure-variable adsorption sub-argument and go out portioned product gas, reduce deep removal H2The tolerance of S technique, desorbing obtains the hydrogen sulfide gas concentrated, is routed directly to Cross unit, solves owing to the large-minded chemical solvent circular flow caused is big, loss is big, energy consumption is high, the problem of long flow path.
For solving above-mentioned technical problem, this utility model by the following technical solutions:
A kind of pressure-variable adsorption combines the device of temp.-changing adsorption deep removal hydrogen sulfide, including pressure-swing absorption apparatus, temperature swing absorption unit, the air inlet pipe of described pressure-swing absorption apparatus is connected with admission line, described pressure-swing absorption apparatus at least includes a pressure-swing absorber, and the Utilization of PSA Relief Gas pipe of described pressure-swing absorption apparatus connects rich H2The inlet end of S stripping gas booster fan, described rich H2The outlet side of S stripping gas booster fan connects end by Cross unit and connects Cross unit, and the escape pipe of described pressure-swing absorption apparatus is connected with the air inlet pipe of temperature swing absorption unit；Described temperature swing absorption unit includes two temperature-change adsorption towers, the absorption of said two temperature-change adsorption tower and resolving are alternately, described temperature-change adsorption tower is connected with the temperature controlled steam pipeline for temperature-change adsorption tower heating, cooling, the temp.-changing adsorption stripping gas pipeline of temperature swing absorption unit connects the air inlet pipe of pressure-swing absorption apparatus, and the outlet pipe of temperature swing absorption unit connects product feed channel.
Further, described Utilization of PSA Relief Gas pipe is provided with rich H2S stripping gas surge tank, prevents rich H2S stripping gas suck-back is to pressure-swing absorber, and then affects the adsorption process of enriching section, reduces because of the pressure change impulsive force to pipeline, extends pipeline service life.
Further, described Utilization of PSA Relief Gas pipe is provided with rich H2S stripping gas check-valves, prevents rich H further2S stripping gas is back to pressure-swing absorber, and then affects the adsorption process of enriching section, plays the effect of security protection.
Further, described temp.-changing adsorption stripping gas pipeline is provided with temp.-changing adsorption stripping gas check-valves, unstripped gas is prevented to be directly entered temperature-change adsorption tower, destroy the adsorption bed of temperature-change adsorption tower, and prevent deep desulfuration section stripping gas to be back to temperature-change adsorption tower, and then the adsorption process of influence depth desulfurization section, play the effect of security protection.
Further, described temp.-changing adsorption stripping gas pipeline is provided with temp.-changing adsorption stripping gas surge tank, prevent stripping gas suck-back to temperature-change adsorption tower, and then the adsorption process of influence depth desulfurization section, reduce because of the pressure change impulsive force to pipeline, extend pipeline service life.
Further, described product feed channel is provided with product gas surge tank, prevent product gas suck-back to temperature-change adsorption tower, and then the adsorption process of influence depth desulfurization section, reduce because of the pressure change impulsive force to pipeline, extend pipeline service life.
Further, described product feed channel is provided with product gas check-valves, prevents product gas to be back to temperature-change adsorption tower, it is to avoid the adsorption process of influence depth desulfurization section, plays the effect of security protection.
Further, the number of described pressure-swing absorber is not less than 4, is carried out by Valve controlling Adsorption and desorption process, it is ensured that consecutive production simultaneously.
Compared with prior art, the beneficial effects of the utility model are:
(1) low pressure is made to contain H by pressure-variable adsorption2H in S tail gas2S concentrates, and a step reaches to reclaim H2The requirement of S device, effectively reduces next step deep removal H2The load of S technique, thus reduce energy consumption and the material consumption of whole desulfurizer；
(2) first carry out pressure-variable adsorption sub-argument and go out gas in the middle of part, the H in middle gas2The content of S is relatively low, is continuing with temp.-changing adsorption deep removal H2S gas, it is to avoid use chemical absorption method, it is achieved energy-saving and cost-reducing, obtains purity higher product gas, is suitable for purity of product gas is required big production technology.
Accompanying drawing explanation
Fig. 1 is this utility model device schematic diagram；
Figure acceptance of the bid note is respectively as follows: 1, admission line；2, pressure-swing absorption apparatus；21, pressure-swing absorber；22, Utilization of PSA Relief Gas pipe；23, rich H2S stripping gas check-valves；3, rich H2S stripping gas surge tank；4, rich H2S stripping gas booster fan；5, Cross unit connects end；6, temp.-changing adsorption stripping gas surge tank；7, temperature swing absorption unit；71, temperature-change adsorption tower；72, temp.-changing adsorption stripping gas pipeline；73, temp.-changing adsorption stripping gas check-valves；8, product gas surge tank；9, product feed channel；91, product gas check-valves；10, temperature controlled steam pipeline.
Detailed description of the invention
Application principle of the present utility model, effect and effect, be explained by following embodiment.
Embodiment 1
As shown in Figure 1, a kind of pressure-variable adsorption combines the device of temp.-changing adsorption deep removal hydrogen sulfide, including pressure-swing absorption apparatus 2, temperature swing absorption unit 7, the air inlet pipe of described pressure-swing absorption apparatus 2 is connected with admission line 1, described pressure-swing absorption apparatus 2 at least includes that a pressure-swing absorber 21, the Utilization of PSA Relief Gas pipe 22 of described pressure-swing absorption apparatus 2 connect rich H2The inlet end of S stripping gas booster fan 4, described rich H2The outlet side of S stripping gas booster fan 4 connects end 5 by Cross unit and connects Cross unit, and the escape pipe of described pressure-swing absorption apparatus 2 is connected with the air inlet pipe of temperature swing absorption unit 7；Described temperature swing absorption unit 7 includes two temperature-change adsorption towers 71, said two temperature-change adsorption tower 71 absorption and resolving are alternately, described temperature-change adsorption tower 71 is connected with the temperature controlled steam pipeline 10 for temperature-change adsorption tower 71 heating, cooling, the temp.-changing adsorption stripping gas pipeline 72 of temperature swing absorption unit 7 connects the air inlet pipe of pressure-swing absorption apparatus 2, and the outlet pipe of temperature swing absorption unit 7 connects product feed channel 9.
In the present embodiment, unstripped gas enters pressure-swing absorption apparatus 2 through admission line 1, by pressure-variable adsorption, unstripped gas is divided into the middle gas containing a small amount of hydrogen sulfide and sulfur-richization hydrogenolysis air-breathing two parts, described sulfur-richization hydrogenolysis air-breathing sulfur content reaches to enter the standard of Cross unit, enters rich H through Utilization of PSA Relief Gas pipe 222Enter Cross unit after S stripping gas booster fan 4 supercharging, reclaim；Described middle gas is stripped of most hydrogen sulfide, sulfur content is low, use the mode deep desulfuration of temp.-changing adsorption, middle gas is through the air inlet pipe of the escape pipe entrance temperature swing absorption unit 7 of pressure-swing absorption apparatus 2, then carrying out deep desulfuration in temperature swing absorption unit 7, the purity of product gas obtained through temperature swing absorption unit 7 is high, enters next workshop section through product feed channel 9, deep desulfuration section stripping gas sulfur content is relatively big, is back to pressure-swing absorption apparatus 2 through temp.-changing adsorption stripping gas pipeline 72.
In the present embodiment, in unstripped gas hydrogen sulfide at concentrations up to more than 2%, made containing H the pressure-variable adsorption effect of 80-140 DEG C in about 0.2MPa, operation temperature by operation pressure2H in the stripping gas of S2S concentration reaches the entrance concentration requirement of Cross unit, directly stripping gas is sent into Cross unit and recycles, according to the detection data in current laboratory, and the H of residual gas after PSA concentrates2S content is about 200～300ppm, and tolerance at least reduces 20% relatively originally simultaneously, another part H Han trace2The gas of S carries out deep desulfuration by temp.-changing adsorption the most further；The present embodiment makes low pressure contain H by pressure-variable adsorption2H in S tail gas2S concentrates, and a step reaches to reclaim H2The requirement of S device, effectively reduces next step deep removal H2The load of S technique, thus reduce energy consumption and the material consumption of whole desulfurizer, the product gas that temp.-changing adsorption obtains has the advantages that purity is high, so the present invention is suitable for purity of product gas is required big production technology.
Embodiment 2
Optimizing further on the basis of pressure-variable adsorption a kind of described in embodiment 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, described Utilization of PSA Relief Gas pipe 22 is provided with rich H2S stripping gas surge tank 3, prevents rich H2S stripping gas suck-back is to pressure-swing absorber 21, and then affects the adsorption process of enriching section, controls rich H2The outlet of S stripping gas surge tank 3 or inlet pressure will not produce sudden change, and reduce because of the pressure change impulsive force to pipeline, extend pipeline service life；Described Utilization of PSA Relief Gas pipe 22 is provided with rich H2S stripping gas check-valves 23, prevents rich H further2S stripping gas is back to pressure-swing absorber 21, and then affects the adsorption process of enriching section, plays the effect of security protection.
Embodiment 3
Optimize further on the basis of pressure-variable adsorption a kind of described in embodiment 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, described temp.-changing adsorption stripping gas pipeline 72 is provided with temp.-changing adsorption stripping gas check-valves 73, unstripped gas is prevented to be directly entered temperature-change adsorption tower 71, destroy the adsorption bed of temperature-change adsorption tower, and prevent deep desulfuration section stripping gas to be back to temperature-change adsorption tower 71, and then the adsorption process of influence depth desulfurization section, play the effect of security protection；Described temp.-changing adsorption stripping gas pipeline 72 is provided with temp.-changing adsorption stripping gas surge tank 6, prevent stripping gas suck-back to temperature-change adsorption tower, and then the adsorption process of influence depth desulfurization section, reduce because of the pressure change impulsive force to pipeline, extend pipeline service life.
Embodiment 4
Optimize further on the basis of pressure-variable adsorption a kind of described in embodiment 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, described product feed channel 9 is provided with product gas surge tank 8, prevent product gas suck-back to temperature-change adsorption tower 71, and then the adsorption process of influence depth desulfurization section, reduce because of the pressure change impulsive force to pipeline, extend pipeline service life；Described product feed channel 9 is provided with product gas check-valves 91, prevents product gas to be back to temperature-change adsorption tower 71, it is to avoid the adsorption process of influence depth desulfurization section, plays the effect of security protection.
Embodiment 5
Optimizing further on the basis of pressure-variable adsorption a kind of described in embodiment 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, the number of described pressure-swing absorber 21 is not less than 4, is carried out by Valve controlling Adsorption and desorption process, it is ensured that consecutive production simultaneously.
It is embodiment of the present utility model as mentioned above.This utility model is not limited to above-mentioned embodiment, and anyone should learn the structure change made under enlightenment of the present utility model, and every have same or like technical scheme, within each falling within protection domain of the present utility model with this utility model.
Claims (8)
1. a pressure-variable adsorption combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterized in that, including pressure-swing absorption apparatus (2), temperature swing absorption unit (7), the air inlet pipe of described pressure-swing absorption apparatus (2) is connected with admission line (1), described pressure-swing absorption apparatus (2) at least includes a pressure-swing absorber (21), and the Utilization of PSA Relief Gas pipe (22) of described pressure-swing absorption apparatus (2) connects rich H2The inlet end of S stripping gas booster fan (4), described rich H2The outlet side of S stripping gas booster fan (4) connects end (5) by Cross unit and connects Cross unit, and the escape pipe of described pressure-swing absorption apparatus (2) is connected with the air inlet pipe of temperature swing absorption unit (7)；Described temperature swing absorption unit (7) includes two temperature-change adsorption towers (71), said two temperature-change adsorption tower (71) absorption and resolving are alternately, described temperature-change adsorption tower (71) is connected with the temperature controlled steam pipeline (10) for temperature-change adsorption tower (71) heating, cooling, temp.-changing adsorption stripping gas pipeline (72) of temperature swing absorption unit (7) connects the air inlet pipe of pressure-swing absorption apparatus (2), and the outlet pipe of temperature swing absorption unit (7) connects product feed channel (9).
A kind of pressure-variable adsorption the most as claimed in claim 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described Utilization of PSA Relief Gas pipe (22) is provided with rich H2S stripping gas surge tank (3).
A kind of pressure-variable adsorption the most as claimed in claim 1 or 2 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described Utilization of PSA Relief Gas pipe (22) is provided with rich H2S stripping gas check-valves (23).
A kind of pressure-variable adsorption the most as claimed in claim 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described temp.-changing adsorption stripping gas pipeline (72) is provided with temp.-changing adsorption stripping gas check-valves (73).
5. a kind of pressure-variable adsorption as described in claim 1 or 4 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described temp.-changing adsorption stripping gas pipeline (72) is provided with temp.-changing adsorption stripping gas surge tank (6).
A kind of pressure-variable adsorption the most as claimed in claim 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described product feed channel (9) is provided with product gas surge tank (8).
7. a kind of pressure-variable adsorption as described in claim 1 or 6 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that described product feed channel (9) is provided with product gas check-valves (91).
A kind of pressure-variable adsorption the most as claimed in claim 1 combines the device of temp.-changing adsorption deep removal hydrogen sulfide, it is characterised in that the number of described pressure-swing absorber (21) is not less than 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620258670.8U CN205412605U (en) | 2016-03-31 | 2016-03-31 | Pressure swing adsorption combines alternating temperature to adsorb device of degree of depth desorption hydrogen sulfide |
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| CN201620258670.8U CN205412605U (en) | 2016-03-31 | 2016-03-31 | Pressure swing adsorption combines alternating temperature to adsorb device of degree of depth desorption hydrogen sulfide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336729A (en) * | 2018-12-04 | 2019-02-15 | 四川天科技股份有限公司 | The method and system of acetylene in a kind of 1,4 butanediol synthesis tail gas of recycling |
| CN110465158A (en) * | 2019-06-27 | 2019-11-19 | 杨皓 | A kind of pressure swing adsorption technique with heat pump system |
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2016
- 2016-03-31 CN CN201620258670.8U patent/CN205412605U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336729A (en) * | 2018-12-04 | 2019-02-15 | 四川天科技股份有限公司 | The method and system of acetylene in a kind of 1,4 butanediol synthesis tail gas of recycling |
| CN109336729B (en) * | 2018-12-04 | 2024-04-30 | 西南化工研究设计院有限公司 | Method and system for recycling acetylene in 1,4 butanediol synthesis tail gas |
| CN110465158A (en) * | 2019-06-27 | 2019-11-19 | 杨皓 | A kind of pressure swing adsorption technique with heat pump system |
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