CN103031172B - Layered biological-chemical combined biogas desulfurizing device - Google Patents
Layered biological-chemical combined biogas desulfurizing device Download PDFInfo
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- CN103031172B CN103031172B CN2013100032436A CN201310003243A CN103031172B CN 103031172 B CN103031172 B CN 103031172B CN 2013100032436 A CN2013100032436 A CN 2013100032436A CN 201310003243 A CN201310003243 A CN 201310003243A CN 103031172 B CN103031172 B CN 103031172B
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- 239000000126 substance Substances 0.000 title claims abstract description 34
- 230000003009 desulfurizing effect Effects 0.000 title abstract description 15
- 238000005273 aeration Methods 0.000 claims abstract description 74
- 239000003513 alkali Substances 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 52
- 238000004062 sedimentation Methods 0.000 claims description 30
- 238000012856 packing Methods 0.000 claims description 27
- 239000006052 feed supplement Substances 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 10
- 239000005864 Sulphur Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract 3
- 239000000945 filler Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 230000001502 supplementing effect Effects 0.000 abstract 2
- 238000006477 desulfuration reaction Methods 0.000 description 14
- 230000023556 desulfurization Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 238000000855 fermentation Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000009102 absorption Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical class O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a layered biological-chemical combined biogas desulfurizing device. The layered biological-chemical combined biogas desulfurizing device comprises a chemical absorbing layer, a biological desulfurizing layer and an alkali liquor circulating system; the chemical absorbing layer is provided with a biogas outlet pipe, a sprinkler head, a filler layer, a biogas inlet pipe, a biogas inlet pump and a biogas distributing plate, wherein an isolation plate, a settling tank, a biological aeration tank, an air aeration plate, an air inlet pump, an air inlet pipe, a mud discharging and sulfur pipe, an air outlet, a settling tank overflow opening and a dissolved oxygen probe are arranged on the biological desulfurizing layer, wherein the upper part of the isolation plate is inverted-conical; and the lower part of the isolation plate is conical; and an overflow pipe, a pH value probe, an alkali liquor circulating pipe, an alkali liquor circulating pump, a material supplementing pipe, a material supplementing pump, a liquid storage groove and a liquid storage groove overflow opening are arranged in the alkali liquor circulating system. According to the invention, chemical absorption and biological desulfurizing processes are organically combined, so that efficient desulfurizing can be achieved and the desulfurizing cost can be controlled; meanwhile, as the filler layer, the biological aeration tank and the settling tank are skillfully integrated, compact design, land conservation and convenient promotion are achieved.
Description
Technical field
The present invention relates to a kind of layer-stepping biological-chemical associating methane-desulfurizing device.
Background technology
Biogas is a kind of flammable mist, contains CH
460%-70%, CO
225%-40% and a small amount of H
2s, NH
3, H
2with CO etc.H in biogas
2s content is generally 1-11g/m
3.H
2s is a kind of pernicious gas of severe toxicity, in air or under moist condition, pipeline, burner and other hardware, instrument and meter etc. is had to strong corrosiveness.H
2the S burning generates SO
2, can directly affect human body health; SO
2meet water and generate sulfuric acid, strong corrosiveness is arranged.Therefore before biogas is used, must remove the H in biogas
2s.The Environmental Protection in China standard code, during as the energy, H in biogas
2s content must not surpass 20mg/m
3.Due to H in biogas
2s concentration is general far away higher than the regulation of Environmental Protection in China standard, so H
2removing of S becomes requisite pretreatment link in the biogas use procedure.
Existing biogas desulfurization method mainly contains chemical method, physico-chemical process and bioanalysis etc.At present, generally adopt the desulfurization of dry oxidation iron on China's biogas engineering.At normal temperatures biogas is passed through to the desulfurizing agent bed, make the H in biogas
2s contacts with activated ferric oxide, generates Fe
2s
3, then allow and contain H
2the desulfurizing agent of S contacts with air, while having water, and Fe
2s
3change into iron oxide and elemental sulfur.Although dry oxidation iron desulfur technology comparative maturity, also be in following some shortcoming: operating cost is higher, and the operation operation is loaded down with trivial details, and labour intensity is larger, and Sulfur capacity is lower, and discarded desulfurizing agent also can produce secondary pollution etc.
Biological desulphurization is both economical, pollution-free again, is the desirable substitute technology of dry desulfurization.So-called biological desulphurization, utilize the metabolism of microorganism that the hydrogen sulfide in biogas is converted into to elemental sulfur or sulfate exactly, and its reaction equation is:
2HS
- + 0
2→2S + 2OH
- （1）
2HS
- + 40
2→2SO
4 2- + 2H
+ （2）
According to mode of operation, can be divided into biological desulphurization and the outer biological desulfurization of anaerobic jar in anaerobic jar.In last biological desulfurization process, the biological desulphurization process is placed in anaerobic fermentation tank and completes, and anaerobic fermentation tank has concurrently to be produced biogas and removes H
2the S dual-use function.But due to H
2s has corrosiveness to the air chamber of fermentation tank, adds the elemental sulfur generated in tank and is difficult to remove, and this technique is not generally applied.Outside anaerobic jar, in biological sulfur removal technology, the biological desulphurization process is placed on separately in the biological desulphurization tower carries out.Its advantage has: do not need chemical catalyst, there is no secondary pollution, power consumption is few, and processing cost is low etc.
At present, biological desulphurization has obtained certain applying, and in European countries such as Germany, the methane bio-desulfurization tower has been widely used on the biogas fermentation engineering, but still exists many problems urgently to be resolved hurrily.The common desulfurizing tower volume of single biological desulfurization process is larger, takes up an area morely, and the hydrogen sulfide removal rate is low, process operation is unstable wait not enough.In addition, in the situation that desulfurizing tower oxygen excess sulfide can be sulfate by direct oxidation, affect alkali liquid regeneration in desulfurizing tower, thereby affect hydrogen sulfide absorption efficiency, finally cause desulfuration efficiency low.The problem existed for current methane bio-desulfurization, the present invention has designed a kind of layer-stepping biological-chemical associating methane-desulfurizing device, can realize the biogas high-efficiency desulfurization, controls the biogas desulfurization cost simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of layer-stepping biological-chemical associating methane-desulfurizing device is provided.
Layer-stepping biological-chemical associating methane-desulfurizing device comprises chemical absorbing layer, biological desulphurization layer and alkali liquor circulating system, the chemical absorbing layer is provided with biogas escape pipe, spray head, packing layer, biogas air inlet pipe, biogas air intake pump and biogas air-spreading disk from top to bottom successively, and wherein the biogas air intake pump is connected with the biogas air-spreading disk by the biogas air inlet pipe, the biological desulphurization layer comprises division board, sedimentation basin, bio-aeration pool, the air aeration dish, the air inlet pump, air intake duct, the spoil disposal sulphur discharging pipeline, the air gas outlet, the sedimentation basin overfall, dissolved oxygen probe, bio-aeration pool top is provided with division board, the air gas outlet, the outer sedimentation basin that is provided with in bio-aeration pool middle part, the sedimentation basin upper end is provided with the sedimentation basin overfall, the bio-aeration pool lower sides is provided with air intake duct and dissolved oxygen probe, in bio-aeration pool, bottom is provided with the air aeration dish, air intake duct one end is connected with the air aeration dish, the air intake duct other end is connected with the air inlet pump, the bio-aeration pool bottom is provided with the spoil disposal sulphur discharging pipeline, alkali liquor circulating system comprises overflow pipe, alkali lye circulation pipe, NaOH solution circulating pump, pH probe, feed supplement pump, feed supplement pipe, reservoir overfall, reservoir, be provided with the pH probe in reservoir, the reservoir upper end is provided with the reservoir overfall, the sedimentation basin overfall is connected with reservoir by overflow pipe, spray head is connected with reservoir with NaOH solution circulating pump by the alkali lye circulation pipe, and the feed supplement pump is connected with reservoir by the feed supplement pipe.
Described packing layer and bio-aeration pool are cylindrical, and the packing layer ratio of height to diameter is 4～5:1, and the aeration tank ratio of height to diameter is 1.5～2:1, and packing layer and bio-aeration pool diameter ratio are 0.3～0.4:1.Between described packing layer and bio-aeration pool, with conical side wall, be connected, the side bus of circular cone and axis angle are 40 ~ 50 °.Described sedimentation basin is annular, the diameter that its internal diameter is bio-aeration pool, and external diameter is 1.2～1.3:1 with the internal diameter ratio, height is 0.8～0.9:1 with the internal diameter ratio.Described packing layer is 0.15～0.2:1 with bio-aeration pool effective volume ratio, and sedimentation basin is 0.3～0.4:1 with bio-aeration pool effective volume ratio, and reservoir is 0.1～0.15:1 with bio-aeration pool effective volume ratio.Described division board is comprised of upper and lower two parts, division board top is divided into the turbination of upper and lower opening, the angle of circular cone side bus and axis is 40 ~ 50 °, the circular cone back cut diameter is 5～6:1 with the lower port diameter ratio, the division board bottom is divided into taper shape, the circular cone drift angle is 85 ~ 95 °, and on the bottom surface diameter of circular cone and division board, the lower port diameter ratio of part is 1.8～2:1.Distance between described biogas air-spreading disk and packing layer bottom is 10 ~ 15cm, and the distance between air aeration dish and bio-aeration pool bottom is 15 ~ 20cm.
The beneficial effect that the present invention has: 1) chemical absorbing and biological desulfurizing technology organically combine, and can bring into play strong point separately, both can realize high-efficiency desulfurization, meet the biogas instructions for use, can control desulphurization cost again, make this technology be easy to promote; 2) chemical absorbing layer, bio-aeration pool and sedimentation basin integrate dexterously, compact to design, simple for structure, and the land used saving is easy to operate, is convenient to commercialization; 3) be provided with dissolved oxygen probe in bio-aeration pool, can control the dissolved oxygen in bio-aeration pool by regulating aeration rate, can reduce the accessory substance that the biological desulphurization process produces on the one hand, avoid secondary pollution, can reduce the alkali lye loss on the other hand, reduce operating cost; 4) chemical absorbing layer and biological desulphurization layer separate with division board, and the oxygen in bio-aeration pool can directly not contact with biogas, can avoid biogas directly to contact with oxygen the potential safety hazard caused, meets the security requirement of biogas desulfurization; 5) be provided with sedimentation basin between bio-aeration pool and spray liquid reservoir, both can have reduced biomass in bio-aeration pool and run off, can protect again spray head and packing layer not to be blocked by microorganism.
The accompanying drawing explanation
Accompanying drawing is the structural representation of layer-stepping biological-chemical associating methane-desulfurizing device, in figure: biogas escape pipe 1, spray head 2, packing layer 3, biogas air inlet pipe 4, biogas air intake pump 5, biogas air-spreading disk 6, division board 7, sedimentation basin 8, bio-aeration pool 9, air aeration dish 10, air inlet pump 11, air intake duct 12, spoil disposal sulphur discharging pipeline 13, air gas outlet 14, sedimentation basin overfall 15, dissolved oxygen probe 16, overflow pipe 17, alkali lye circulation pipe 18, NaOH solution circulating pump 19, pH probe 20, feed supplement pump 21, feed supplement pipe 22, reservoir overfall 23, reservoir 24.
The specific embodiment
As shown in Figure 1, layer-stepping biological-chemical associating methane-desulfurizing device comprises chemical absorbing layer, biological desulphurization layer and alkali liquor circulating system, the chemical absorbing layer is provided with biogas escape pipe 1, spray head 2, packing layer 3, biogas air inlet pipe 4, biogas air intake pump 5 and biogas air-spreading disk 6 from top to bottom successively, and wherein biogas air intake pump 5 is connected with biogas air-spreading disk 6 by biogas air inlet pipe 4, the biological desulphurization layer comprises division board 7, sedimentation basin 8, bio-aeration pool 9, air aeration dish 10, air inlet pump 11, air intake duct 12, spoil disposal sulphur discharging pipeline 13, air gas outlet 14, sedimentation basin overfall 15, dissolved oxygen probe 16, bio-aeration pool 9 tops are provided with division board 7, air gas outlet 14, bio-aeration pool is provided with sedimentation basin 8 outside 9 middle parts, sedimentation basin 8 upper ends are provided with sedimentation basin overfall 15, bio-aeration pool 9 lower sides are provided with air intake duct 12 and dissolved oxygen probe 16, the interior bottom of bio-aeration pool 9 is provided with air aeration dish 10, air intake duct 12 1 ends are connected with air aeration dish 10, air intake duct 12 other ends are connected with air inlet pump 11, bio-aeration pool 9 bottoms are provided with spoil disposal sulphur discharging pipeline 13, alkali liquor circulating system comprises overflow pipe 17, alkali lye circulation pipe 18, NaOH solution circulating pump 19, pH probe 20, feed supplement pump 21, feed supplement pipe 22, reservoir overfall 23, reservoir 24, be provided with pH probe 20 in reservoir 24, reservoir 24 upper ends are provided with reservoir overfall 23, sedimentation basin overfall 15 is connected with reservoir 24 by overflow pipe 17, spray head 2 is connected with reservoir 24 with NaOH solution circulating pump 19 by alkali lye circulation pipe 18, and feed supplement pump 21 is connected with reservoir 24 by feed supplement pipe 22.
Described packing layer 3 and bio-aeration pool 9 are cylindrical, and packing layer 3 ratio of height to diameters are 4～5:1, and aeration tank 9 ratio of height to diameters are 1.5～2:1, and packing layer 3 and bio-aeration pool 9 diameter ratios are 0.3～0.4:1.Between described packing layer 3 and bio-aeration pool 9, with conical side wall, be connected, the side bus of circular cone and axis angle are 40 ~ 50 °.Described sedimentation basin 8 is annular, the diameter that its internal diameter is bio-aeration pool 9, and external diameter is 1.2～1.3:1 with the internal diameter ratio, height is 0.8～0.9:1 with the internal diameter ratio.Described packing layer 3 is 0.15～0.2:1 with bio-aeration pool 9 effective volume ratios, and sedimentation basin 8 is 0.3～0.4:1 with bio-aeration pool 9 effective volume ratios, and reservoir 20 is 0.1～0.15:1 with bio-aeration pool 9 effective volume ratios.Described division board 7 is comprised of upper and lower two parts, division board 7 tops are divided into the turbination of upper and lower opening, the angle of circular cone side bus and axis is 40 ~ 50 °, the circular cone back cut diameter is 5～6:1 with the lower port diameter ratio, division board 7 bottoms are divided into taper shape, the circular cone drift angle is 85 ~ 95 °, and on the bottom surface diameter of circular cone and division board 7, the lower port diameter ratio of part is 1.8～2:1.Distance between described biogas air-spreading disk 6 and packing layer 3 bottoms is 10 ~ 15cm, and the distance between air aeration dish 10 and bio-aeration pool 9 bottoms is 15 ~ 20cm.
The course of work of layer-stepping biological-chemical associating methane-desulfurizing device is as follows: under the driving of biogas air intake pump 5, biogas enters the bottom of packing layer 3 by biogas air inlet pipe 4 and biogas air-spreading disk 6, under pressure, from the bottom up by packing layer 3, in this process, hydrogen sulfide in biogas is removed from the packing layer 3 fallen alkali liquor absorptions in top, and the biogas after purification leaves this device from biogas escape pipe 1.Under Action of Gravity Field, the alkali lye that is absorbed with hydrogen sulfide drops down onto on division board 7, and the slit flow middle through division board 7 is to bio-aeration pool 9, under the effect of desulfurization microorganism, sulfide is oxidized to sulphur simple substance, from spoil disposal sulphur discharging pipeline 13, leaves this device, and alkali lye is reproduced simultaneously; Alkali lye after regeneration, by flowing in reservoir 20 by sedimentation basin overfall 15 and overflow pipe 17 after microorganism under sedimentation basin 8 precipitations, under the driving of NaOH solution circulating pump 19, is sent to the top of packing layer 3 by alkali lye circulation pipe 18 and spray head 2.Under the driving of air inlet pump 11, air enters the bottom of bio-aeration pool 9 by air intake duct 12 and air aeration dish 10, under buoyancy, air enters the top of bio-aeration pool from bottom to top through bio-aeration pool 9, finally by air gas outlet 14, leave this device.Under the driving of feed supplement pump 21, the alkali lye that is dissolved with the required nutriment of microorganism enters reservoir 24 by feed supplement pipe 22, and for biological methane-desulfurizing device supplements fresh alkali lye and nutriment, unnecessary liquid leaves this device from reservoir overfall 23 simultaneously.
Claims (7)
1. a layer-stepping biological-chemical associating methane-desulfurizing device, is characterized in that comprising chemical absorbing layer, biological desulphurization layer and alkali liquor circulating system, the chemical absorbing layer is provided with biogas escape pipe (1), spray head (2), packing layer (3), biogas air inlet pipe (4), biogas air intake pump (5) and biogas air-spreading disk (6) from top to bottom successively, and wherein biogas air intake pump (5) is connected with biogas air-spreading disk (6) by biogas air inlet pipe (4), the biological desulphurization layer comprises division board (7), sedimentation basin (8), bio-aeration pool (9), air aeration dish (10), air inlet pump (11), air intake duct (12), spoil disposal sulphur discharging pipeline (13), air gas outlet (14), sedimentation basin overfall (15), dissolved oxygen probe (16), bio-aeration pool (9) top is provided with division board (7), air gas outlet (14), the outer sedimentation basin (8) that is provided with in bio-aeration pool (9) middle part, sedimentation basin (8) upper end is provided with sedimentation basin overfall (15), bio-aeration pool (9) lower sides is provided with air intake duct (12) and dissolved oxygen probe (16), the interior bottom of bio-aeration pool (9) is provided with air aeration dish (10), air intake duct (12) one ends are connected with air aeration dish (10), air intake duct (12) other end is connected with air inlet pump (11), bio-aeration pool (9) bottom is provided with spoil disposal sulphur discharging pipeline (13), alkali liquor circulating system comprises overflow pipe (17), alkali lye circulation pipe (18), NaOH solution circulating pump (19), pH pop one's head in (20), feed supplement pump (21), feed supplement pipe (22), reservoir overfall (23), reservoir (24), be provided with pH probe (20) in reservoir (24), reservoir (24) upper end is provided with reservoir overfall (23), sedimentation basin overfall (15) is connected with reservoir (24) by overflow pipe (17), spray head (2) is connected with reservoir (24) with NaOH solution circulating pump (19) by alkali lye circulation pipe (18), feed supplement pump (21) is connected with reservoir (24) by feed supplement pipe (22).
2. a kind of layer-stepping biological-chemical according to claim 1 is combined methane-desulfurizing device, it is characterized in that: described packing layer (3) and bio-aeration pool (9) are for cylindrical, packing layer (3) ratio of height to diameter is 4～5:1, aeration tank (9) ratio of height to diameter is 1.5～2:1, and packing layer (3) and bio-aeration pool (9) diameter ratio are 0.3～0.4:1.
3. a kind of layer-stepping biological-chemical associating methane-desulfurizing device according to claim 1 is characterized in that: between described packing layer (3) and bio-aeration pool (9), with conical side wall, be connected, the side bus of circular cone and axis angle are 40 ~ 50 °.
4. a kind of layer-stepping biological-chemical according to claim 1 is combined methane-desulfurizing device, it is characterized in that: described sedimentation basin (8) is annular, the diameter that its internal diameter is bio-aeration pool (9), external diameter is 1.2～1.3:1 with the internal diameter ratio, height is 0.8～0.9:1 with the internal diameter ratio.
5. a kind of layer-stepping biological-chemical according to claim 1 is combined methane-desulfurizing device, it is characterized in that: described packing layer (3) is 0.15～0.2:1 with bio-aeration pool (9) effective volume ratio, sedimentation basin (8) is 0.3～0.4:1 with bio-aeration pool (9) effective volume ratio, and reservoir (20) is 0.1～0.15:1 with bio-aeration pool (9) effective volume ratio.
6. a kind of layer-stepping biological-chemical according to claim 1 is combined methane-desulfurizing device, it is characterized in that: described division board (7) is comprised of upper and lower two parts, division board (7) top is divided into the turbination of upper and lower opening, the angle of circular cone side bus and axis is 40 ~ 50 °, the circular cone back cut diameter is 5～6:1 with the lower port diameter ratio, division board (7) bottom is divided into taper shape, the circular cone drift angle is 85 ~ 95 °, and the lower port diameter ratio of the upper part of the bottom surface diameter of circular cone and division board (7) is 1.8～2:1.
7. a kind of layer-stepping biological-chemical according to claim 1 is combined methane-desulfurizing device, it is characterized in that: the distance between described biogas air-spreading disk (6) and packing layer (3) bottom is 10 ~ 15cm, and the distance between air aeration dish (10) and bio-aeration pool (9) bottom is 15 ~ 20cm.
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| CN104830392B (en) * | 2015-05-19 | 2018-04-20 | 农业部沼气科学研究所 | The operating method of methane-desulfurizing device |
| CN104815550A (en) * | 2015-05-19 | 2015-08-05 | 农业部沼气科学研究所 | Biogas biological desulfurization device |
| CN106867608A (en) * | 2017-04-11 | 2017-06-20 | 常州大学 | A kind of methane-desulfurizing device |
| CN107129845A (en) * | 2017-05-27 | 2017-09-05 | 农业部沼气科学研究所 | A kind of biogas purification method of methane-generating pit |
| CN111632485B (en) * | 2020-05-11 | 2024-04-05 | 广东石油化工学院 | Biogas purification device and method based on biological desulfurization technology |
| CN114471085B (en) * | 2021-12-27 | 2024-06-14 | 上海丛麟环保科技股份有限公司 | Wet deacidification process and system for hazardous waste incineration flue gas |
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| CN201168561Y (en) * | 2008-03-25 | 2008-12-24 | 北京城市排水集团有限责任公司 | Sewage treatment plant digestion tank marsh gas desulfurizer |
| CN201785372U (en) * | 2010-08-27 | 2011-04-06 | 浙江大学 | Aerobic/anaerobic integrated methane gas safety biological desulfurization device |
| CA2817160C (en) * | 2010-11-09 | 2017-12-19 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Agriculture And Agri-Food | Biological oxidation of hydrogen sulphide in a psychrophilic anaerobic digestion bioreactor subjected to microaerobic conditions |
| CA2821792A1 (en) * | 2010-12-17 | 2012-06-21 | Biogasclean A/S | Methods for providing a scrubber liquid and bacteria substrate for use in biological desulphurisation of gases, particularly biogas |
| JP5330436B2 (en) * | 2011-03-15 | 2013-10-30 | 株式会社東芝 | Biogas biodesulfurization apparatus and cleaning method thereof |
| CN102631837B (en) * | 2012-04-27 | 2014-08-13 | 陈小光 | Integrated type sulfur-containing waste gas purifying device |
| CN203021521U (en) * | 2013-01-06 | 2013-06-26 | 浙江大学 | Layered biological-chemical combined biogas desulfurization device |
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