CN219670440U - Simple wet-type marsh gas desulfurization and purification device - Google Patents
Simple wet-type marsh gas desulfurization and purification device Download PDFInfo
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- CN219670440U CN219670440U CN202321393329.XU CN202321393329U CN219670440U CN 219670440 U CN219670440 U CN 219670440U CN 202321393329 U CN202321393329 U CN 202321393329U CN 219670440 U CN219670440 U CN 219670440U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 238000000746 purification Methods 0.000 title claims abstract description 20
- 238000001179 sorption measurement Methods 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000008929 regeneration Effects 0.000 claims abstract description 25
- 238000011069 regeneration method Methods 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 230000002745 absorbent Effects 0.000 claims abstract description 11
- 239000002250 absorbent Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims description 27
- 239000003814 drug Substances 0.000 claims description 10
- 239000006228 supernatant Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims 1
- 239000013049 sediment Substances 0.000 claims 1
- 230000003009 desulfurizing effect Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a simple wet-type marsh gas desulfurization and purification device, which relates to the technical field of marsh gas desulfurization, and comprises an adsorption tower, wherein the middle part of the adsorption tower is provided with a marsh gas inlet, the top of the adsorption tower is provided with a marsh gas outlet and an absorbent spraying device positioned below the marsh gas outlet, and the bottom end of the adsorption tower is provided with a mixed liquid outlet; the device comprises a regeneration tower, wherein the middle part of the regeneration tower is provided with an air inlet, the top of the regeneration tower is provided with an air outlet and a mixed liquid spraying device positioned below the air outlet, the mixed liquid spraying device is communicated with a mixed liquid outlet of the adsorption tower, and the bottom end of the regeneration tower is provided with a slurry outlet. The simple wet methane desulfurizing and purifying device has low investment and operation cost and no secondary pollutant.
Description
Technical Field
The utility model relates to the technical field of methane desulfurization, in particular to a simple wet methane desulfurization and purification device.
Background
When methane is produced from an anaerobic fermentation device, particularly when the methane is fermented at medium temperature or high temperature, a large amount of hydrogen sulfide is carried, and because a large amount of water vapor exists in the methane, the water and the hydrogen sulfide in the methane act together, so that corrosion and blockage of a metal pipeline, a valve and a flowmeter are accelerated, in addition, sulfur dioxide gas generated after the hydrogen sulfide is combusted is combined with the water vapor in a combustion product to form sulfurous acid, so that the metal surface of the device is corroded, and the pollution to the atmosphere environment is caused, so that the health of a human body is influenced. Therefore, before the biogas is used, the biogas is subjected to pretreatment to remove hydrogen sulfide in the biogas.
In the field of biogas desulfurization and purification, the market demands of a desulfurization process with low investment cost, low operation cost and stable operation effect are more and more extensive, and the dry adsorption desulfurization process has better desulfurization effect, but usually requires 2-3 desulfurization towers to perform switching operation, and the desulfurizing agent is replaced more frequently, so that the investment and daily operation cost are high.
Therefore, it is necessary to provide a simple wet desulfurization and purification device for biogas to solve the above problems.
Disclosure of Invention
(one) solving the technical problems
The utility model aims to provide a simple wet-type biogas desulfurization and purification device with low investment and operation cost and no secondary pollutant, so as to solve the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme: a simple wet-type biogas desulfurization and purification device, comprising:
the device comprises an adsorption tower, wherein the middle part of the adsorption tower is provided with a methane inlet, the top of the adsorption tower is provided with a methane outlet and an absorbent spraying device positioned below the methane outlet, and the bottom end of the adsorption tower is provided with a mixed liquid outlet;
the device comprises a regeneration tower, wherein the middle part of the regeneration tower is provided with an air inlet, the top of the regeneration tower is provided with an air outlet and a mixed liquid spraying device positioned below the air outlet, the mixed liquid spraying device is communicated with a mixed liquid outlet of the adsorption tower, and the bottom end of the regeneration tower is provided with a slurry outlet.
Preferably, the inside of the adsorption tower and the inside of the regeneration tower are both provided with packed beds.
Preferably, the device further comprises a precipitation tank, wherein the middle part of the precipitation tank is provided with a slurry inlet and a supernatant outlet, the bottom of the precipitation tank is provided with a precipitation outlet, and the supernatant outlet is communicated with an absorbent spraying device of the adsorption tower.
Preferably, the filter device is further comprised, and a feed inlet of the filter device is communicated with a precipitation outlet of the precipitation tank.
Preferably, the slurry inlet is disposed at a height greater than the supernatant outlet.
Preferably, the device further comprises a medicament supplementing tank, wherein a medicament outlet of the medicament supplementing tank is communicated with the precipitation tank.
Preferably, the biogas outlet of the adsorption tower is communicated with the gas inlet of the gas-liquid separator.
(III) beneficial effects
Compared with the prior art, the utility model provides a simple wet-type methane desulfurization and purification device, which has the following beneficial effects:
1. according to the simple wet-type biogas desulfurization purification device, the adsorption tower, the regeneration tower and the precipitation tank are arranged, so that solid product sulfur can be recovered, and liquid product sodium hydroxide solution can be recycled, thereby reducing the use cost.
2. According to the simple wet-type methane desulfurization purification device, the packing bed is arranged, so that the contact area of gas and liquid two-phase flow is increased, the sulfur capacity is increased, and the anti-fluctuation capability is high.
3. The simple wet-type marsh gas desulfurization and purification device has the advantages that circulating liquid only participates in spraying, the circulating liquid amount is low, the energy consumption is obviously reduced, and the operation cost is reduced.
Drawings
FIG. 1 is a flow chart of the present utility model.
In the figure: 1. an adsorption tower; 2. a sulfur transfer pump; 3. a regeneration tower; 4. roots blower; 5. a precipitation tank; 6. a filtering device; 7. a circulation pump; 8. a packed bed; 9. the medicament replenishing tank.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1, a simple wet biogas desulfurization and purification device comprises: the device comprises an adsorption tower 1, wherein the middle part of the adsorption tower 1 is provided with a methane inlet, the top of the adsorption tower is provided with a methane outlet and an absorbent spraying device positioned below the methane outlet, and the bottom end of the adsorption tower 1 is provided with a mixed liquid outlet;
the regeneration tower 3, the middle part of regeneration tower 3 has the air inlet, and the top has the air outlet and is located the mixed solution spray set of air outlet below, and mixed solution spray set and adsorption tower 1's mixed solution export intercommunication, and regeneration tower 3's bottom has the thick liquid export.
The adsorption tower 1 is arranged to absorb hydrogen sulfide in methane by spraying NaOH solution through the absorbent spraying device so as to achieve the purpose of removing hydrogen sulfide gas in methane, the regeneration tower 3 is arranged to convert oxygen in air and sodium sulfide liquid into S and NaOH by introducing air into mixed liquid generated by the reaction of the hydrogen sulfide gas and the NaOH solution, so that the absorbent is reused, and S recycling is facilitated.
In some embodiments, in order to fully contact the gas and liquid two-phase streams and improve the reaction efficiency, the inside of each of the adsorption tower 1 and the regeneration tower 3 is provided with a packed bed 8.
In some embodiments, the device further comprises a precipitation tank 5, wherein the middle part of the precipitation tank 5 is provided with a slurry inlet and a supernatant outlet, the bottom of the precipitation tank 5 is provided with a precipitation outlet, and the supernatant outlet is communicated with the absorbent spraying device of the adsorption tower 1. The slurry produced by the reaction in the regeneration column 3 is passed to a precipitation tank 5 for S precipitation separation.
Specifically, the arrangement height of the slurry inlet is greater than the arrangement height of the supernatant outlet.
In some embodiments, a filtering device 6 is further included, and a feed inlet of the filtering device 6 is in communication with a precipitation outlet of the precipitation tank 5. Filtering and dewatering the precipitate by arranging a filtering device 6 so as to recover sulfur
In some embodiments, to facilitate replenishment of the absorbent, a medicament replenishment tank 9 is further included, and a medicament outlet of the medicament replenishment tank 9 communicates with the precipitation tank 5.
In some embodiments, in order to remove moisture in the biogas, the biogas outlet of the adsorption tower 1 is in communication with the gas inlet of the gas-liquid separator.
Working principle: the biogas enters an adsorption tower 1, an absorbent spraying device sprays NaOH solution, the biogas contacts with the NaOH solution, hydrogen sulfide is converted into sodium sulfide, and the biogas with the hydrogen sulfide removed is discharged from the top of the adsorption tower and is comprehensively utilized after passing through a steam-water separator;
NaOH solution containing sodium sulfide at the bottom of the adsorption tower 1 is pumped to the regeneration tower 3 through the sulfur transfer pump 2, air is introduced into the regeneration tower 3 through the Roots blower 4, oxygen in the air and mixed liquid are subjected to oxidation reaction, solid sulfur and the NaOH solution are generated and regenerated, mixed slurry is formed, the slurry is sent to the precipitation tank 5, the excessive air is directly discharged to the atmosphere from the top of the regeneration tower 3, and the discharged gas does not contain harmful components, so that the standard of environmental protection and emission permission is achieved;
the supernatant of the precipitation tank 5 is pumped to the adsorption tower 1 by a circulating pump 7 for recycling, solid sulfur is precipitated at the bottom of the precipitation tank 5, and the precipitate is pumped out and sent into a filtering device 6 for filtering and dewatering.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A simple wet-type biogas desulfurization and purification device, which is characterized by comprising:
the device comprises an adsorption tower (1), wherein the middle part of the adsorption tower (1) is provided with a methane inlet, the top of the adsorption tower is provided with a methane outlet and an absorbent spraying device positioned below the methane outlet, and the bottom end of the adsorption tower (1) is provided with a mixed liquid outlet;
the device comprises a regeneration tower (3), wherein an air inlet is formed in the middle of the regeneration tower (3), an air outlet and a mixed liquid spraying device positioned below the air outlet are formed in the top of the regeneration tower (3), the mixed liquid spraying device is communicated with a mixed liquid outlet of the adsorption tower (1), and a slurry outlet is formed in the bottom end of the regeneration tower (3).
2. The simple wet biogas desulfurization and purification device as claimed in claim 1, wherein: the inside of the adsorption tower (1) and the inside of the regeneration tower (3) are both provided with a packed bed (8).
3. The simple wet biogas desulfurization and purification device as claimed in claim 1, wherein: still include precipitation tank (5), the middle part of precipitation tank (5) has thick liquid import and supernatant export, the bottom of precipitation tank (5) is equipped with the sediment export, the supernatant export is linked together with the absorbent spray set of adsorption tower (1).
4. A simple wet biogas desulfurization and purification device according to claim 3, characterized in that: the filter device (6) is further included, and a feed inlet of the filter device (6) is communicated with a precipitation outlet of the precipitation tank (5).
5. A simple wet biogas desulfurization and purification device according to claim 3, characterized in that: the arrangement height of the slurry inlet is larger than that of the supernatant outlet.
6. A simple wet biogas desulfurization and purification device according to claim 3, characterized in that: the device also comprises a medicament supplementing tank (9), wherein a medicament outlet of the medicament supplementing tank (9) is communicated with the precipitation tank (5).
7. The simple wet biogas desulfurization and purification device as claimed in claim 1, wherein: the biogas outlet of the adsorption tower (1) is communicated with the gas inlet of the gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321393329.XU CN219670440U (en) | 2023-06-02 | 2023-06-02 | Simple wet-type marsh gas desulfurization and purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321393329.XU CN219670440U (en) | 2023-06-02 | 2023-06-02 | Simple wet-type marsh gas desulfurization and purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219670440U true CN219670440U (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321393329.XU Active CN219670440U (en) | 2023-06-02 | 2023-06-02 | Simple wet-type marsh gas desulfurization and purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219670440U (en) |
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2023
- 2023-06-02 CN CN202321393329.XU patent/CN219670440U/en active Active
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