CN108579373A - It is a kind of to be directed to desulphurization system and its sulfur method containing high-concentration hydrogen sulfide biogas - Google Patents
It is a kind of to be directed to desulphurization system and its sulfur method containing high-concentration hydrogen sulfide biogas Download PDFInfo
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- CN108579373A CN108579373A CN201810482085.XA CN201810482085A CN108579373A CN 108579373 A CN108579373 A CN 108579373A CN 201810482085 A CN201810482085 A CN 201810482085A CN 108579373 A CN108579373 A CN 108579373A
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- Prior art keywords
- biogas
- tower
- hydrogen sulfide
- dry
- wet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims description 41
- 229910052717 sulfur Inorganic materials 0.000 title claims description 9
- 239000011593 sulfur Substances 0.000 title claims description 9
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 105
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 27
- 230000023556 desulfurization Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000008929 regeneration Effects 0.000 claims abstract description 19
- 238000011069 regeneration method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 45
- 239000005864 Sulphur Substances 0.000 claims description 32
- 239000006260 foam Substances 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 19
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 238000011049 filling Methods 0.000 claims description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 238000005276 aerator Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000002386 leaching Methods 0.000 claims 1
- 238000005496 tempering Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000006227 byproduct Substances 0.000 abstract description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 2
- 108010063955 thrombin receptor peptide (42-47) Proteins 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 most pharmacy Substances 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002351 wastewater 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8612—Hydrogen sulfide
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/70—Non-metallic catalysts, additives or dopants
- B01D2255/705—Ligands for metal-organic catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Gas Separation By Absorption (AREA)
Abstract
It being directed to the desulphurization system containing high-concentration hydrogen sulfide biogas the present invention relates to a kind of, include biogas import, biogas flowmeter, biogas cabinet, wet desulfuration tower, moisture trap, the dry desulfurizing tower of several serial or parallel connections, exit gas detector, biogas wind turbine and the biogas utilization pipeline being sequentially communicated by biogas, the liquid of the wet desulfuration tower treated spray liquid and moisture trap enters desulfurization regeneration processing unit.Wet desulphurization is combined by the desulphurization system of the present invention with dry desulfurizing process, can concentration of hydrogen sulfide be reduced to 100ppm hereinafter, meeting biogas energy utilization from 20000ppm or more.Its operating cost is relatively low, and biogas utilization can generate economic benefit after processing, and the by-product of generation can also be used as kinds of goods sale, achieve many things at one stroke.
Description
Technical field
It being directed to desulphurization system and its sulfur method containing high-concentration hydrogen sulfide biogas the present invention relates to a kind of, belongs to biogas
Technical field of desulfurization.
Background technology
Biogas is various organic substances, and in isolation air (reducing condition), and under suitable temperature, pH value, process is micro-
A kind of combustible gas that the fermentation of biology generates.Biogas belongs to secondary energy sources, and is regenerative resource, every cubic metre
The calorific value of biogas is about 20800-23600 kilojoules, is equivalent to the heat of 0.7 kilogram of anthracite offer, therefore is a kind of fine
The energy.The main component of biogas includes：50%-80% methane (CH4), 20%-40% carbon dioxide (CO2), 0%-5% nitrogen
Gas (N2), the hydrogen (H less than 1%2), the oxygen (O2) less than 0.4% and 0.1%-3% hydrogen sulfide (H2The gases composition such as S).
Biogas is generated in industrial production at present mostly from anaerobic fermentation process, biogas is generated and is generally used to power generation, biogas or biogas
Boiler combustion generates steam or hot water, is used for plant area.
Due to containing certain hydrogen sulfide in biogas, because hydrogen sulfide has very strong corrosiveness, if into methane boiler
Or generator, equipment inner wall is easily corroded, equipment damage or safety accident are caused.Therefore, biogas is using preceding having to be taken off
Sulphuring treatment, before generally entering methane boiler or generator, hydrogen sulfide in methane content should be less than 100ppm.
However the high-concentration waste waters such as most pharmacy, chemical industry cause its Anaerobic Treatment to produce because containing sulfur-containing compound in raw material
Raw hydrogen sulfide in methane content is higher.Hydrogen sulfide in methane concentration is more than 5000ppm, some are even as high as 30000ppm or more.
The removing of such concentration of H 2 S is frequently with sodium hydroxide wet absorption, but the method operating cost is higher, usually above biogas
Using cost, thus most enterprises will discharge after this part biogas directly burning.This mode not only causes energy waste, biogas
The burning of middle hydrogen sulfide will also result in environmental pollution.
Invention content
It being directed to desulphurization system and its sulfur method containing high-concentration hydrogen sulfide biogas the present invention provides a kind of, is solved
Operating cost is higher in the existing sweetening process containing high-concentration hydrogen sulfide biogas, the problems such as causing energy waste.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
It is a kind of to be directed to the desulphurization system containing high-concentration hydrogen sulfide biogas, include the biogas that is sequentially communicated by biogas into
Mouth, the dry desulfurizing tower of biogas flowmeter, biogas cabinet, wet desulfuration tower, moisture trap, several serial or parallel connections, outlet
Gas detecting instrument, biogas wind turbine and biogas utilization pipeline, the wet desulfuration tower treated spray liquid and moisture trap
Liquid enter desulfurization regeneration processing unit, the desulfurization regeneration processing unit include the rich solution pond being sequentially communicated,
Regenerated reactor and lean solution pond, the lean solution pond are connected to by wet tower spray pump with wet desulfuration tower, setting in the regenerated reactor
There are jet pump, ejector, aerator, the regenerated reactor to be connected with sulphur foam trap, the regenerated reactor and sulphur foam are received
Storage is connected to by pipeline with lean solution pond by plate and frame filter press elevator pump and plate and frame filter press, the plate and frame filter press, institute
The plate and frame filter press stated is provided with the outer discharge pipe of sulphur.
Further, a preferred embodiment of the present invention is：The desulphurization system further includes desulfurizing agent chemicals dosing plant and urges
Agent chemicals dosing plant, the desulfurizing agent chemicals dosing plant and catalyst chemicals dosing plant are connect with lean solution pond.
Further, a preferred embodiment of the present invention is：The desulphurization system further includes biogas combustion torch, described
Biogas combustion torch is connect with spark arrester, biogas cabinet successively.
Further, a preferred embodiment of the present invention is：The wet desulfuration tower is that filler spray column or void tower spray
Tower is drenched, wet tower empty tower gas velocity is not more than 0.25m/s, and dwell time in the tower is more than 60s, and the liquid-gas ratio of wet tower spray is selected as
150L/m3-300L/m3。
Further, a preferred embodiment of the present invention is：Nozzle is using vortex spray head in the wet desulfuration tower.
Further, a preferred embodiment of the present invention is：The dry desulfurizing tower include dry-type desulfurizing tower main body and
Line regenerating unit, if dried layer desulfurizing agent support plate is arranged in the inside of the dry-type desulfurizing tower main body, desulfurizing agent support plate will be done
Formula desulfurizing tower main body is divided into several desulfurizing agent filling areas, and ferric oxide desulfurizer is loaded in the desulfurizing agent filling area, described
The bottom of dry-type desulfurizing tower main body is provided with biogas air inlet pipe, and biogas check valve and are set gradually in the biogas air inlet pipe
Two biogas flowmeters are provided with methane outlet and exhaust outlet, the methane outlet at the top of the dry-type desulfurizing tower main body
It is connect with exit gas detector；The methane outlet is provided with the exhaust-gas treatment pipe being connected to rich solution pond, and described is online
Regenerating unit includes the air intake duct being connected with biogas air inlet pipe and online thermometer, the import of the air intake duct
End is connected with air compressor machine, and it is unidirectional that air flow meter, electric control valve and air are disposed on the air intake duct
Valve, the online temperature are calculated as several, are arranged in desulfurizing agent filling area different location.
Further, a preferred embodiment of the present invention is：Further include on the dry-type desulfurizing tower dry type desulfurizing tower base,
Desulfurizing agent manhole and discharge outlet.
Further, a preferred embodiment of the present invention is：The ferric oxide desulfurizer is yellow or brown color small column
Body, diameter 4-6mm, length 5-15mm, bulk density 0.7-0.9kg/L.
The present invention also provides a kind of sulfur method containing high-concentration hydrogen sulfide biogas, it is characterised in that：Using the present invention
The desulphurization system, include the following steps：
(1) anaerobic pond generation biogas enters biogas cabinet from biogas import by the first biogas flowmeter, temporary in biogas cabinet
Afterwards, wet desulfuration tower is entered to；In this tower, biogas is run from bottom to top, after being contacted with top-down desulfurization spray liquid, hair
Raw reaction is to by the hydrogen sulfide stripping of 90-98% in biogas, remove the biogas after hydrogen sulfide and enter moisture trap, in air water
In separator, biogas and moisture are detached, and the biogas after separation enters dry-type desulfurizing tower, sulphur in the biogas after dry desulfurization
Change hydrogen content be reduced to 100ppm hereinafter, by biogas wind turbine supercharging after can enter biogas utilization pipeline, carry out power generation or into
Enter methane boiler burning to utilize；
(2) spray liquid and the liquid of moisture trap separation enter rich solution pond it is temporary after, using jet pump through ejector into
Enter regenerated reactor, under the double action of jet pump and aerator so that desulfurizing agent regenerates under the action of catalyst, while sulphur foam
It will be precipitated to sulphur foam trap, enter to lean solution pond by the gravity flow of regenerated doctor solution, lean solution pond supernatant can be by wet
Tower spray pump enters wet desulfuration tower and is reacted, and the sediment in sulphur foam trap and lean solution pond is promoted by plate and frame filter press
Pump enters, and press filtration is carried out in plate and frame filter press, and the sulphur foam generated after press filtration is discharged by discharge pipe outside sulphur, filtrate after press filtration
It is back to lean solution pond and continues to participate in reaction, due in use, adding wet desulphurization agent by desulfurizing agent chemicals dosing plant, leading to
It crosses catalyst chemicals dosing plant and adds catalyst, two kinds of medicaments are added after dissolving to lean solution pond；
(3) enter and exit gas detector is set on biogas wind turbine preceding pipeline, to determine desulfurization effect；
(4) if methane utilizing system failure, system can directly be led to by pressure sensor monitoring to signal, extra biogas
Biogas combustion torch burning is crossed, avoids pressure is excessive from causing the system failure, spark arrester is set before biogas combustion torch, prevents from being tempered
Cause security risk.
Beneficial effects of the present invention：
The present invention desulphurization system wet desulphurization is combined with dry desulfurizing process, can by concentration of hydrogen sulfide from
20000ppm or more is reduced to 100ppm hereinafter, meeting biogas energy utilization.Its operating cost is relatively low, biogas utilization energy after processing
Economic benefit is generated, the by-product of generation can also be used as kinds of goods sale, achieve many things at one stroke.
The wet desulphurization of the present invention uses wet method catalysis oxidation new technology, utilizes desulphurization catalyst, completes sulfide
Catalytic chemistry absorbs and two processes of catalyzing oxidized regeneration.In sweetening process, biogas is absorbed using chemical agent sodium carbonate
In hydrogen sulfide there is desulfurizing function more stronger than common chemical absorbing due to the addition of catalyst；In oxidation regeneration mistake
Cheng Zhong, this catalyst energy while catalysis oxidation inorganic sulfur and organosulfur compound, realize the regeneration of sodium carbonate absorbent.
Fundamental reaction is：
Na2CO3+2H2S→NaHS+NaHCO3
Dry desulfurization device using can on-line regeneration dry desulfurization device, desulfurizing agent main component be iron oxide, pass through
On-line regeneration can extend 3-4 times of desulfurizing agent service life, save desulfurizing agent expense, while this on-line regeneration can realize automation
The security risk that misoperation is brought is exempted in operation, is ensured again for biogas using increasing by one.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the present of invention；
Fig. 2 is the structural schematic diagram of the devil liquor recovery processing unit in Fig. 1；
Fig. 3 is the structural schematic diagram of the dry desulfurizing tower in Fig. 1；
Fig. 4 is the front view of the vortex nozzle of the present invention；
Fig. 5 is the left view of the vortex nozzle of the present invention；
In figure, 1, biogas import；2, biogas flowmeter；3, biogas cabinet；4, spark arrester；5, wet desulfuration tower；6, air water point
From device；7,1# dry-type desulfurizing towers；8,2# dry-type desulfurizing towers；9, exit gas detector；10, biogas wind turbine；11, biogas utilization pipe
Road；12, rich solution pond；13, jet pump；14, ejector；15, regenerated reactor；16, aerator；17, sulphur foam trap；18, sheet frame
Filter press elevator pump；19, lean solution pond；20, wet tower spray pump；21, desulfurizing agent chemicals dosing plant；22, catalyst chemicals dosing plant；23、
Plate and frame filter press；24, the outer discharge pipe of sulphur；25, biogas combustion torch；26, exhaust-gas treatment pipe；27, vortex nozzle；7-1, biogas
Admission line；7-2, biogas check valve；7-4, air compressor machine；7-5, air flow meter；7-6, electric control valve；7-7, air inlet
Pipeline；7-8, air check valve；7-9, dry type desulfurizing tower base；7-10, desulfurizing agent supporting clapboard；7-11, desulfurizing agent manhole；
7-12, desulfurizing agent filling area；7-13, dry-type desulfurizing tower main body；7-14, electronic thermometer；7-15, methane outlet；7-16, exhaust
Mouthful；7-17, discharge outlet.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figs. 1-5, a kind of to be directed to the desulphurization system containing high-concentration hydrogen sulfide biogas, including connected successively by biogas
Logical biogas import 1, biogas flowmeter 2, biogas cabinet 3, wet desulfuration tower, moisture trap 6, several serial or parallel connections it is dry
Method desulfurizing tower, exit gas detector 7-17, biogas wind turbine 10 and biogas utilization pipeline 11, the wet desulfuration tower 5 processing
The liquid of spray liquid and moisture trap 6 afterwards enters desulfurization regeneration processing unit, desulfurization regeneration processing dress
Rich solution pond 12, regenerated reactor 1915 and lean solution pond 19 including being sequentially communicated are set, the lean solution pond 19 passes through wet tower spray pump 20
It is connected to wet desulfuration tower 5, jet pump 13, ejector 14, aerator 16, the regeneration is provided in the regenerated reactor 15
Pond 1915 is connected with sulphur foam trap 17, and the regenerated reactor 15 and sulphur foam trap 17 are promoted by plate and frame filter press 23
Pump 18 and plate and frame filter press 23, the plate and frame filter press 23 are connected to by pipeline with lean solution pond 19, the plate and frame filter press
23 are provided with discharge pipe 24 outside sulphur.
Dry desulfurizing tower in the present embodiment is two, is 1# dry-type desulfurizing towers 7 and 2# dry-type desulfurizing towers 8, passes through difference
The connection of pipeline and valve, two dry desulfurizing towers can be with parallel running, can also series operation.
In use, wet desulphurization agent (sodium carbonate) and catalyst (want component based on double focusing phthalocyanine cobalt complex
Efficient desulfurizing agent) have partition losses, therefore desulphurization system further includes desulfurizing agent chemicals dosing plant 21 and catalyst chemicals dosing plant
22, the desulfurizing agent chemicals dosing plant 21 and catalyst chemicals dosing plant 22 are connect with lean solution pond 19.
Desulphurization system further includes biogas combustion torch 25, the biogas combustion torch 25 successively with spark arrester 4, biogas cabinet
3 connections.If methane utilizing system failure, system can directly pass through natural pond by pressure sensor monitoring to signal, extra biogas
Gas burning torch 25 burns, and avoids pressure is excessive from causing the system failure.Spark arrester 4, anti-non-return are set before biogas combustion torch 25
Fire causes security risk.
Wet desulfuration tower is filler spray column or hollow-spraying-tower tower, and wet tower empty tower gas velocity is not more than 0.25m/s, stops in tower
The time is stayed to be more than 60s, the liquid-gas ratio of wet tower spray is selected as 150L/m3-300L/m3.According to packed tower, filler region stops
Time is not less than 15s.
Nozzle can prevent from blocking using vortex spray head 27, this vortex spray head 27 in wet desulfuration tower, increase gas-liquid
Contact area improves reaction efficiency.
12 residence time of rich solution pond is not more than 30min, and 15 residence time of regenerated reactor is designed as 3-5h, when lean solution pond 19 stops
Between be designed as 1-2h.
Rich solution pond 12 is configured with liquid level gauge, to control 13 start-stop of jet pump；
Regenerated reactor 15 is configured with ejector 14 and aeration head, passes through the effect of aerator 16 and ejector 14, large quantity of air
Into regenerated reactor 15, is reacted under catalyst or so with NaHS, NaHCO3 etc. that desulfurization generates, is allowed to form sodium hydroxide etc.,
Continue to participate in reaction.It is designed with scraper plate in regenerated reactor 15, because sulphur foam can be swum on the water surface, this scraper plate can be by surface sulphur foam
It strikes off in collection to sulphur foam trap 17.
Sedimentation basin form is designed in lean solution pond 19, to facilitate impurity to be discharged.
Dry desulfurizing tower in the present invention includes dry-type desulfurizing tower main body 7-13 and on-line regeneration facility, and the dry type is de-
If dried layer desulfurizing agent support plate is arranged in the inside of sulphur tower main body 7-13, dry-type desulfurizing tower main body is for 7-13 points by desulfurizing agent support plate
Several desulfurizing agent filling areas 7-12, the desulfurizing agent filling area 7-12 load ferric oxide desulfurizer, the dry type desulfurizing
The bottom of tower main body 7-13 is provided with biogas air inlet pipe, and biogas check valve 7-2 is arranged in the biogas air inlet pipe, and described is dry
Methane outlet 7-15 and exhaust outlet 7-16, the methane outlet 7-15 and outlet are provided at the top of formula desulfurizing tower main body 7-13
Gas detecting instrument 9 connects；The methane outlet 7-15 is provided with the exhaust-gas treatment pipe 26 being connected to rich solution pond 12, it is described
Line regenerating unit includes the air intake duct being connected with biogas air inlet pipe and online thermometer 7-14, the air intake duct
Input end be connected with air compressor machine 7-4, air flow meter 7-5, motorized adjustment are disposed on the air intake duct
Valve 7-6 and air check valve 7-8, the online thermometer 7-14 are several, and setting is in desulfurizing agent filling area 7-12 differences
Position.
Desulfurizing agent supporting clapboard 7-10 is two in the present embodiment, and desulfurizing agent supporting clapboard 7-10 is by dry-type desulfurizing tower main body
It is two desulfurizing agent filling area 7-12 that 7-13, which is divided to, and online thermometer 7-14 is two, is arranged in the upper of desulfurizing agent filling area 7-12
Portion.
Further include dry type desulfurizing tower base 7-9, desulfurizing agent manhole 7-11 and discharge outlet 7-17 on dry-type desulfurizing tower.
Ferric oxide desulfurizer is yellow or brown color small cylinder, and diameter 4-6mm, length 5-15mm, bulk density is
0.7-0.9kg/L。
Dry-type desulfurizing tower main body 7-13 uses fiberglass or stainless steel of the heatproof at 70 DEG C or more.
The superficial linear velocity of dry-type desulfurizing tower main body 7-13 should be 0.3- in 0.2-0.4m/s, single layer desulfurizing agent piling height
0.8m。
The purpose of biogas check valve 7-2 is to prevent gas from returning, biogas flowmeter 2 to monitor charge flow rate, with calculate into
Gas air mass flow.After biogas enters in main body tower.The effect one of desulfurizing agent supporting clapboard 7-10 is the dress for being to support desulfurizing agent
It fills out, it is made to fix, in addition also functioning to makes the equally distributed effect of biogas, avoids the short stream in part；Desulfurizing agent filling area 7-12 is main
Ferric oxide desulfurizer is loaded, is yellow or brown color small cylinder, diameter about 4-6mm, length 5-15mm, bulk density is
0.7-0.9kg/L, loadings and filling region need to be determined according to design biogas air inflow and hydrogen sulfide removal amount.Dry type desulfurizing
The purpose of tower base 7-9 is to ensure that Structure of Flue Gas Desulfuration Absorbing is firm, can be needed to increase reinforcing prop etc. according to structure in design.Desulfurizing agent is examined
The purpose of repairing hole is to load desulfurizing agent and carry out overhauling setting in tower, be typically designed a diameter of 600mm.Exhaust outlet 7-16 should locate
It is closed in long-term.Gas detecting instrument is used for measuring outlet concentration of hydrogen sulfide and oxygen concentration, when continuous 1 of the hydrogen sulfide content in outlet
When hour is higher than 100ppm, illustrate that desulfurizing agent has been substantially saturated, needs to start on-line regeneration..
Further include dry type desulfurizing tower base 7-9, desulfurizing agent manhole and discharge outlet 7-17 on dry-type desulfurizing tower.
Ferric oxide desulfurizer is yellow or brown color small cylinder, and diameter 4-6mm, length 5-15mm, bulk density is
0.7-0.9kg/L。
The public gas detecting instrument of two dry-type desulfurizing towers and air compressor machine 7-4 in this implementation.
Embodiment 2
A kind of sulfur method containing high-concentration hydrogen sulfide biogas, using the desulphurization system of embodiment 1, including following step
Suddenly：
(1) anaerobic pond generation biogas enters biogas cabinet from biogas import by the first biogas flowmeter, temporary in biogas cabinet
Afterwards, wet desulfuration tower is entered to；In this tower, biogas is run from bottom to top, after being contacted with top-down desulfurization spray liquid, hair
Raw reaction is to by the hydrogen sulfide stripping of 90-98% in biogas, remove the biogas after hydrogen sulfide and enter moisture trap, in air water
In separator, biogas and moisture are detached, and the biogas after separation enters dry-type desulfurizing tower, sulphur in the biogas after dry desulfurization
Change hydrogen content be reduced to 100ppm hereinafter, by biogas wind turbine supercharging after can enter biogas utilization pipeline, carry out power generation or into
Enter methane boiler burning to utilize；Exit gas detector is set on into biogas wind turbine preceding pipeline, to determine desulfurization effect.
(2) spray liquid and the liquid of moisture trap separation enter rich solution pond it is temporary after, using jet pump through ejector into
Enter regenerated reactor, under the double action of jet pump and aerator so that desulfurizing agent regenerates under the action of catalyst, while sulphur foam
It will be precipitated to sulphur foam trap, be entered to by the gravity flow of regenerated doctor solution, lean solution pond, lean solution pond supernatant can be by wet
Tower spray pump enters wet desulfuration tower and is reacted, and the sediment in sulphur foam trap and lean solution pond is promoted by plate and frame filter press
Pump, which enters, carries out press filtration in plate and frame filter press, the sulphur foam generated after press filtration is discharged by discharge pipe outside sulphur, filtrate after press filtration
It is back to lean solution pond and continues to participate in reaction；
(3) enter and exit gas detector is set on biogas wind turbine preceding pipeline, to determine desulfurization effect；
(4) if methane utilizing system failure, system can directly be led to by pressure sensor monitoring to signal, extra biogas
Biogas combustion torch burning is crossed, avoids pressure is excessive from causing the system failure, spark arrester is set before biogas combustion torch, prevents from being tempered
Cause security risk；
(5) due in use, adding wet desulphurization agent by desulfurizing agent chemicals dosing plant, being filled by catalyst dosing
It sets and adds catalyst, two kinds of medicaments are added after dissolving to lean solution pond.
Dry desulfurizing process in the present invention is：
(1) biogas after gas-liquid separator separates enters dry-type desulfurizing tower main body 7- by biogas admission line 7-1
In 13, after biogas enters in main body tower, pass through biogas after passing sequentially through desulfurizing agent supporting clapboard 7-10, desulfurizing agent filling area 7-12
7-15 discharges are exported, gas detecting instrument measures outlet concentration of hydrogen sulfide and oxygen concentration, and hydrogen sulfide content is continuous 1 small when outlet
When be higher than 100ppm when, desulfurizing agent has been substantially saturated, start on-line regeneration, dry-type desulfurizing tower water outlet arranged by discharge outlet 7-17
Go out；
(2) air is injected by air intake pipe 7-7 by air compressor machine 7-4, using oxygen in air to reacting
Desulfurizing agent is regenerated, and air flow meter 7-5 is used for meter air amount, and electric control valve 7-6 is used for adjusting air inflow, online temperature
Degree meter 7-14 is to measure tower wall temperature, and when temperature is higher than 50 DEG C, the temperature sensor that online thermometer 7-14 is prepared sends out 4-
The valve that 20mA signals pass to electric control valve 7-6 is closed, and is reduced air inflow, is delayed reproduction speed, when the temperature is low, electricity
Dynamic regulating valve 7-6 valve openings increase, and accelerate reproduction speed, this temperature can be configured according to field condition, the gas ejected
Body is introduced into absorption in sodium carbonate absorbing liquid and handles；
(3) in regenerative process, electric control valve 7-6 unlatchings are temperature controlled, and when opening for the first time, aperture should be according to biogas
Flowmeter controls, and is characterized with air mass flow, and general air mass flow is the oxygen concentration of biogas flow × concentration of hydrogen sulfide × 4/,
No matter when, air flow meter 7-5 numerical value should be less than the above numerical value, and exit gas detector detection oxygen concentration should be less than
1%, if more than 1%, electromagnetism valve opening should reduce.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of being directed to the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Including being sequentially communicated by biogas
Biogas import, biogas flowmeter, biogas cabinet, wet desulfuration tower, moisture trap, several serial or parallel connections dry desulfurization
Tower, exit gas detector, biogas wind turbine and biogas utilization pipeline, the wet desulfuration tower treated spray liquid and air water
The liquid of separator enters desulfurization regeneration processing unit, and the desulfurization regeneration processing unit includes the richness being sequentially communicated
Liquid pool, regenerated reactor and lean solution pond, the lean solution pond is connected to by wet tower spray pump with wet desulfuration tower, in the regenerated reactor
It is provided with jet pump, ejector, aerator, the regenerated reactor is connected with sulphur foam trap, the regenerated reactor and sulphur bubble
Foam collector is connected by plate and frame filter press elevator pump and plate and frame filter press, the plate and frame filter press by pipeline and lean solution pond
Logical, the plate and frame filter press is provided with the outer discharge pipe of sulphur.
2. according to claim 1 a kind of for the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Institute
The desulphurization system stated further includes desulfurizing agent chemicals dosing plant and catalyst chemicals dosing plant, the desulfurizing agent chemicals dosing plant and catalyst
Chemicals dosing plant is connect with lean solution pond.
3. according to claim 1 a kind of for the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Institute
The desulphurization system stated further includes biogas combustion torch, the biogas combustion torch by biogas pipeline successively with spark arrester, natural pond
Gas holder connects.
4. being directed to the desulphurization system containing high-concentration hydrogen sulfide biogas, spy according to claim 1-3 any one of them is a kind of
Sign is：The wet desulfuration tower is filler spray column or hollow-spraying-tower tower, and wet tower empty tower gas velocity is not more than 0.25m/s,
Dwell time in the tower is more than 60s, and the liquid-gas ratio of wet tower spray is selected as 150L/m3-300L/m3。
5. according to claim 4 a kind of for the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Institute
Nozzle is using vortex spray head in the wet desulfuration tower stated.
6. being directed to the desulphurization system containing high-concentration hydrogen sulfide biogas, spy according to claim 1-3 any one of them is a kind of
Sign is：The dry desulfurizing tower includes dry-type desulfurizing tower main body and on-line regeneration facility, the dry-type desulfurizing tower main body
If inside be arranged dried layer desulfurizing agent support plate, desulfurizing agent support plate by dry-type desulfurizing tower main body be divided into several desulfurizing agents load
Ferric oxide desulfurizer is loaded in area, the desulfurizing agent filling area, the bottom of the dry-type desulfurizing tower main body be provided with biogas into
Tracheae sets gradually biogas check valve and the second biogas flowmeter, the dry-type desulfurizing tower master in the biogas air inlet pipe
Methane outlet and exhaust outlet are provided at the top of body, the methane outlet is connect with exit gas detector；The biogas
Outlet is provided with the exhaust-gas treatment pipe being connected to rich solution pond, and the on-line regeneration facility includes being connected with biogas air inlet pipe
Air intake duct and online thermometer, the input end of the air intake duct are connected with air compressor machine, the air inlet
Air flow meter, electric control valve and air check valve are disposed on pipe, the electron temperature is calculated as several, setting
In desulfurizing agent filling area different location.
7. according to claim 6 a kind of for the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Institute
Further include dry type desulfurizing tower base, desulfurizing agent manhole and discharge outlet on the dry-type desulfurizing tower stated.
8. according to claim 6 a kind of for the desulphurization system containing high-concentration hydrogen sulfide biogas, it is characterised in that：Institute
The ferric oxide desulfurizer stated is yellow or brown color small cylinder, diameter 4-6mm, length 5-15mm, bulk density 0.7-
0.9kg/L。
9. a kind of sulfur method containing high-concentration hydrogen sulfide biogas, it is characterised in that：Using desulfurization system described in claim 1
System, includes the following steps：
(1) anaerobic pond generation biogas enters biogas cabinet from biogas import by the first biogas flowmeter, after biogas cabinet is temporary, into
Enter to wet desulfuration tower；In this tower, biogas is run from bottom to top, after being contacted with top-down desulfurization spray liquid, is occurred anti-
It should be to by the hydrogen sulfide stripping of 90-98% in biogas, remove the biogas after hydrogen sulfide and enter moisture trap, in gas-water separation
In device, biogas and moisture are detached, and the biogas after separation enters dry-type desulfurizing tower, the hydrogen sulfide in methane after dry desulfurization
Content is reduced to 100ppm hereinafter, can enter biogas utilization pipeline after the supercharging of biogas wind turbine, carries out the natural pond that generates electricity or enter
Gas boiler burning utilizes；
(2) spray liquid and the liquid of moisture trap separation enter rich solution pond it is temporary after, entered again through ejector using jet pump
Raw pond, under the double action of jet pump and aerator so that desulfurizing agent regenerates under the action of catalyst, while sulphur foam will
It is precipitated to sulphur foam trap, enters to lean solution pond by the gravity flow of regenerated doctor solution, lean solution pond supernatant can be sprayed by wet tower
Leaching pump is reacted into wet desulfuration tower, the sediment in sulphur foam trap and lean solution pond by plate and frame filter press elevator pump into
Enter, press filtration is carried out in plate and frame filter press, the sulphur foam generated after press filtration is discharged by discharge pipe outside sulphur, and filtrate returns after press filtration
Reaction is continued to participate in due in use, wet desulphurization agent being added by desulfurizing agent chemicals dosing plant, by urging to lean solution pond
Agent chemicals dosing plant adds catalyst, and two kinds of medicaments are added after dissolving to lean solution pond；
(3) enter and exit gas detector is set on biogas wind turbine preceding pipeline, to determine desulfurization effect；
(4) if methane utilizing system failure, system can directly pass through natural pond by pressure sensor monitoring to signal, extra biogas
Gas burning torch burns, and avoids pressure is excessive from causing the system failure, spark arrester is arranged before biogas combustion torch, prevents tempering from causing
Security risk.
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Address after: 450000 No. 906, floor 9, building 2, Xinghua science and Technology Industrial Park, west of the second street, south of Jingnan 1st Road, Zhengzhou area (Economic Development Zone), Zhengzhou pilot Free Trade Zone, Henan Province Patentee after: Huaxia Bishui Environmental Protection Technology Co.,Ltd. Address before: No. 906, 9th Floor, Building 2, Xinghua Science and Technology Industrial Park, Economic and Technological Development Zone, Zhengzhou City, Henan Province, 450000 Patentee before: HUAXIA BISHUI ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A desulfurization system and desulfurization method for biogas containing high concentration hydrogen sulfide Effective date of registration: 20221226 Granted publication date: 20201211 Pledgee: Bank of China Zhengzhou branch of Limited by Share Ltd. culture Pledgor: Huaxia Bishui Environmental Protection Technology Co.,Ltd. Registration number: Y2022980028978 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201211 Pledgee: Bank of China Zhengzhou branch of Limited by Share Ltd. culture Pledgor: Huaxia Bishui Environmental Protection Technology Co.,Ltd. Registration number: Y2022980028978 |