CN109107359A - A kind of methane bio-desulfurization system - Google Patents
A kind of methane bio-desulfurization system Download PDFInfo
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- CN109107359A CN109107359A CN201811303730.3A CN201811303730A CN109107359A CN 109107359 A CN109107359 A CN 109107359A CN 201811303730 A CN201811303730 A CN 201811303730A CN 109107359 A CN109107359 A CN 109107359A
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- Prior art keywords
- pond
- lye
- sulfur
- desulfurization
- absorbing tower
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 109
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 80
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000000126 substance Substances 0.000 claims abstract description 69
- 230000023556 desulfurization Effects 0.000 claims abstract description 66
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 63
- 239000011593 sulfur Substances 0.000 claims abstract description 63
- 230000003647 oxidation Effects 0.000 claims abstract description 54
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000004062 sedimentation Methods 0.000 claims abstract description 42
- 238000011049 filling Methods 0.000 claims abstract description 30
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 23
- 241000894006 Bacteria Species 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 230000008929 regeneration Effects 0.000 claims abstract description 7
- 238000011069 regeneration method Methods 0.000 claims abstract description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 46
- 238000005273 aeration Methods 0.000 claims description 43
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 33
- 239000000523 sample Substances 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 19
- 239000010802 sludge Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 9
- 239000005864 Sulphur Substances 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000007269 microbial metabolism Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 14
- 238000013461 design Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 8
- 230000001376 precipitating effect Effects 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000003009 desulfurizing effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000004060 metabolic process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000005406 washing Methods 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
- B01D53/46—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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Abstract
The present invention provides a kind of methane bio-desulfurization system, including chemical absorbing tower, biological oxidation desulfurization pond, sedimentation basin, lye pond；Gas outlet, alkaline liquor distributor, filling body, inlet duct, sulfur-bearing lye collection device are successively arranged in chemical absorbing tower from top to bottom；Filling body is passed through by the biogas that inlet duct enters in chemical absorbing tower from lower to upper；Entered in filling body by the lye that alkaline liquor distributor sprays and reverse mass transfer occurs with biogas, the hydrogen sulfide for absorbing lye in biogas obtains sulfur-bearing lye, and purified biogas is discharged from gas outlet, and sulfur-bearing lye flows into sulfur-bearing lye collection device；Sulfide oxidation in sulfur-bearing lye is elemental sulfur using desulfurization bacterium by biological oxidation desulfurization pond；Efflux in biological oxidation desulfurization pond is separated by solid-liquid separation to obtain regeneration lye by sedimentation basin；Lye pond is used to provide lye to alkaline liquor distributor；Regeneration alkaline stream enters the recycling of lye pond.Present invention is mainly used for provide a kind of methane bio-desulfurization system of high-efficiency and economic.
Description
Technical field
The present invention relates to a kind of biogas desulfurization technical fields, more particularly to a kind of methane bio-desulfurization system.
Background technique
Biogas is a kind of reproducible high-grade clean energy resource, and its components include methane (60-70%), carbon dioxide
(25-40%) and a small amount of hydrogen sulfide (rotten-egg odour), ammonia, hydrogen etc..Wherein, hydrogen sulfide is sulfur-containing compound micro-
It is formed during biological reducing, has very strong corrosiveness to combustion powered devices and metallic conduit, two generated of burning
Sulfur oxide and sulfur trioxide are the important predecessors of environmental acidification, have biggish harm.Therefore, in order to avoid hydrogen sulfide corrosion
Compressor, gas reservoir, engine etc. and hydrogen sulfide poisoning is avoided, biogas needs to carry out desulfurization process before the use.And
And correlation standard, it is used for civilian central gas supply, biogas to be not more than 20mg/m containing flow3, for the gas supply that generates electricity, sulfur-bearing
Amount is not more than 200mg/m3。
In the prior art, biogas desulfurization technology mainly has desulfurization by dry method, wet hair desulfurization technology and biological desulphurization skill
Art.Wherein, desulfurization by dry method is turned into using the physical action and chemical oxygen of solid absorbent (iron oxide, active carbon etc.)
With Oxidation of Hydrogen Sulfide is generated elemental sulfur and sulfate, is primarily adapted for use in the low biogas of hydrogen sulfide content.Wet desulphurization is to utilize
The liquid-absorbants such as lye absorb hydrogen sulfide, regenerate recycling after lye absorption saturation, are suitable for hydrogen sulfide content height or stream
Measure big biogas.Biological desulfurizing technology is using the sulfur-oxidizing bacteria in active desulfurization sludge by H2S turns through biological oxidation process
Turn to elemental sulfur or sulfate radical.
The desulfuration efficiency of desulfurization by dry method is unstable, and desulfurizing agent is easily saturated, and sulfur capacity is low, needs to regularly replace, running cost
With height, secondary pollution is easily caused.The absorbent consumption of Wet Flue Gas Desulfurization Technique is big, and removal efficiency is low, operating difficulties.It is de- with dry method
Sulphur is compared with wet hair desulfurization technology, and the process flow of biological desulfurizing technology is simple and convenient to operate, efficient easy to control, operating cost
It is low.But it was found by the inventors of the present invention that existing biological desulfurizing technology is concentrated mainly on the laboratory simulation experiment stage, lack
Few application is on site and the methane bio-desulfurization system of high-efficiency and economic.
Summary of the invention
In view of this, the present invention provides a kind of methane bio-desulfurization system, main purpose is to provide a kind of high-efficiency and economic
Methane bio-desulfurization system.
In order to achieve the above objectives, present invention generally provides following technical solutions:
On the one hand, the embodiment of the present invention provides a kind of methane bio-desulfurization system comprising:
Chemical absorbing tower is successively arranged gas outlet, alkaline liquor distributor, filling machine in the chemical absorbing tower from top to bottom
Structure, inlet duct, sulfur-bearing lye collection device；Wherein, by the inlet duct enter the chemical absorbing tower in biogas by
Under up pass through the filling body；Entered in the filling body by the lye that the alkaline liquor distributor sprays and is occurred with biogas
Reverse mass transfer, the hydrogen sulfide for absorbing lye in biogas obtain sulfur-bearing lye, and purified biogas is discharged from the gas outlet,
Sulfur-bearing lye flows under the influence of gravity into the sulfur-bearing lye collection device；
Biological oxidation desulfurization pond, biological oxidation desulfurization pond are connected to the sulfur-bearing lye collection device, make sulfur-bearing alkali
Liquid enters in biological oxidation desulfurization pond, using the desulfurization bacterium in biological oxidation desulfurization pond by the vulcanization in sulfur-bearing lye
Object is oxidized to elemental sulfur；
Sedimentation basin, the sedimentation basin are connected to biological oxidation desulfurization pond, and being used for will be in biological oxidation desulfurization pond
Efflux be separated by solid-liquid separation, obtain regeneration lye；
Lye pond, the lye pond are connected to the alkaline liquor distributor in the chemical absorbing tower, for the lye point
Cloth device provides lye；And the lye pond is connected to the sedimentation basin, regenerates lye recycling for making.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, it is additionally provided with demister in the chemical absorbing tower, for by the foam and mist in the biogas after sulphur removal
Drop removes；The demister is located at the lower section of the gas outlet, the demister is located at the top of the alkaline liquor distributor；Its
In, the demister includes:
Cavity is limited, the limit cavity is tubular structure, and the bottom of the limit cavity is provided with multiple ventholes,
The drainage silk extended downwardly is provided at each venthole；The open top setting of the limit cavity；
Wire mesh block, the wire mesh block are filled in the limit cavity；
Pressure cover, the pressure cover include pressure ring and Duo Gen press strip；Wherein, pressure ring structure annular in shape, and the pressure
Ring is removably connect with the limit cavity；The press strip is located at the pressure ring and encloses in the cavity set, and with it is described
Pressure ring connection；Wherein, more press strips are crossed as reticular structure.
Preferably, sprayer-washer is additionally provided in the chemical absorbing tower；Wherein, the sprayer-washer is located at described
The top of demister, positioned at the lower section of the gas outlet；The sprayer-washer is used for the water system being connected to outside chemical absorbing tower,
Utilize chemical absorbing tower described in high pressure water cleaning；And/or
The chemical absorbing tower includes stainless steel tank body；Wherein, the gas outlet is provided with the top of the stainless steel tank body
Portion；The demister, alkaline liquor distributor, filling body, inlet duct, sulfur-bearing lye collection device are sequentially distributed from top to bottom
In the stainless cylinder of steel body.
Preferably, the alkaline liquor distributor includes pressure type comb distributor；Wherein, the pressure type comb distributor is logical
It crosses pipeline to be connected to the lye pond, makes lye by the spray of the comb side wall on the pressure comb distributor under pressure
Mouth sprays；And/or
The inlet duct includes inlet air distribution pipe；Wherein, multiple air inlets are offered on the inlet air distribution pipe, and into
Stomata is arranged downward；The inlet air distribution pipe is connect by pipeline with the force (forcing) pump outside the chemical absorbing tower；And/or
The gas outlet is connected with total outlet pipe；Wherein, total outlet pipe respectively with the inlet duct, outlet
Pipe connection；Wherein, when the biogas of gas outlet discharge is unqualified, the gas that gas outlet is discharged is again by inlet duct
Multiplicating purification is carried out to biogas into chemical absorbing tower；When the biogas qualification of gas outlet discharge, make gas outlet
The biogas of discharge flows to escape pipe.
Preferably, the filling body includes:
At least one packing layer, each described filler layer include cylindrical support part and multiple fillers；Wherein, the tubular branch
Support member is fixed in the chemical absorbing tower, and the upper open end of the cylindrical support part is connected with wire mesh, the tubular branch
The lower open mouth end of support member is connected with wire mesh；Multiple fillers dissipate heap in the cylindrical support part, wire mesh enclose set and
At cavity in；
It is aerated layer, is equipped with aeration layer below each packing layer；Wherein, the aeration layer includes aeration tube；The exposure
Closed at one end, air compressor of the other end for being connected to outside chemical absorbing tower of tracheae；It is opened below the aeration tube
Equipped with multiple solarization air caps；
Wherein, the aeration tube includes the multiple aeration single tubes being sequentially communicated；And multiple aeration single tubes are arranged in parallel；It is described
Solarization air cap is evenly arranged；
Wherein, the filler selects Raschig ring filler.
Preferably, the sulfur-bearing lye collection device includes:
Deflector, the deflector is welded on the inner wall of the chemical absorbing tower, and the deflector tilts down setting,
And with horizontal direction in set angle α；Wherein, 10 °≤α≤20 °；
Funnel, the funnel are connect with the lower end of the deflector；
Eluate conduit, one end of the eluate conduit are connected to the funnel, and the other end is located at chemical absorbing for being connected to
Biological oxidation desulfurization pond outside tower.
Preferably, biological oxidation desulfurization pond includes:
Pond body, the pond body are equipped with inlet and liquid outlet；Wherein, the inlet of the pond body and the sulfur-bearing lye are received
Acquisition means connection；There is aerobic thiophilic bacteria in the pond body；
Aerating pipelines, the aeration tube road are laid in the pond body；And the aeration tube road is for being connected to the pond body
Outer air compressor, to meet the dissolved oxygen demand of microbial metabolism in the pond body by aeration；
Dissolved oxygen monitoring device, the dissolved oxygen monitoring device include being placed in the intracorporal dissolved oxygen monitoring probe in the pond, are used for
The intracorporal dissolved oxygen amount in the pond is detected, to realize the ratio (1.8-2.2) for making the intracorporal dissolved oxygen amount in the pond and sulfur content:
1；
Heating coil, the heating coil are layed in the pond body；
Insulating layer is provided with insulating layer on the outer wall of the pond body；
Temperature monitor and control device, the temperature monitor and control device includes temperature monitoring probe and temperature controller；Institute
Temperature monitoring probe is stated to be placed in the pond body；The temperature controller is connect with the heating coil, will be in the pond body
Temperature control between 28 DEG C -35 DEG C；
PH monitor controller, the pH monitor controller include being placed in the intracorporal pH monitoring probe in the pond and use
The controller of lye whether is injected into the pond body in control alkali liquid tank, by the control of the intracorporal pH value in the pond in 6.8-
7.5。
Preferably, overflow launder, the overflow launder and the sedimentation basin are provided in the pond body in biological oxidation desulfurization pond
Connection, so that the liquid self-flowing in biological oxidation desulfurization pond enters in the sedimentation basin；And/or on edge in the sedimentation basin
Set gradually into guiding region, decanting zone, settling zone in the flow direction of liquid；Wherein, the guiding region includes being connected to described sink
The deflector of shallow lake pond inner wall；It is provided with bracket in the decanting zone, is mounted with inclined tube on the bracket, to promote fixer point
From；The settling zone is pyramidal structure；Wherein, the settling zone is connected with sludge pipe, so that sludge is discharged by sludge pipe；Institute
It states and is provided with overflow port on sedimentation basin, wherein the overflow port is arranged to triangular-notch weir, to intercept the surface scum of overflowing liquid.
Preferably, the sedimentation basin is connected to by the overflow port with the lye pond；And/or it is arranged in the lye pond
There is a pH monitor controller, the pH monitor controller includes the pH monitoring probe being placed in the lye pond and for controlling
Whether alkaline flow container injects the controller of lye into the lye pond.
Preferably, the methane bio-desulfurization system further include: Online Monitoring Control System, the Online Monitoring Control system
System is connect with flowmeter, pressure gauge, the analytical instrument on the air inlet pipeline in inlet duct, and to the air inlet in inlet duct
It is adjusted；The Online Monitoring Control System is connect with the valve on total outlet pipe on the gas outlet, according to reality
The flow direction of border control outlet；Dissolved oxygen monitoring probe, pH in the Online Monitoring Control System and biological oxidation desulfurization pond
Dissolved oxygen amount in biological oxidation desulfurization pond, pH value, temperature control are being set model by monitoring probe, temperature monitoring probe
In enclosing；The Online Monitoring Control System is connect with the pH monitoring probe in the lye pond, by the pH in the lye pond
Value control is within the set range；Wherein, the Online Monitoring Control device includes PLC control system.
Compared with prior art, methane bio-desulfurization system of the invention at least have it is following the utility model has the advantages that
The chemical absorbing tower of methane bio-desulfurization system design provided in an embodiment of the present invention by inlet duct by being entered
Biogas in chemical absorbing tower passes through filling body from lower to upper；By alkaline liquor distributor spray lye enter in filling body with
Reverse mass transfer occurs for biogas, increases the mass transfer contact of biogas and lye, improves lye to the absorptivity of hydrogen sulfide；And pass through
Biological oxidation desulfurization pond is separately provided and improves metabolism of the sulfur bacteria to sulfur-bearing lye；And by the way that sedimentation basin is separately provided and sinks
The lye pond of shallow lake pond connection can improve the precipitation and separation efficiency of sulfur-bearing sludge and the recycling rate of lye.Therefore, the present embodiment
In methane bio-desulfurization system desulfuration efficiency it is high, precipitation and separation is high-efficient and lye can reuse, to reduce
Cost, good economy performance.
Further, the demister installed at the position that the embodiment of the present invention passes through the close tower top in chemical absorbing tower
Including the disk-like structure being rolled by wire mesh, can by outlet foam and droplet remove.Also, the demister of the present embodiment
By at venthole be arranged drainage silk can by the mist in wire mesh block drain at drop, and along drainage filament fall off,
It avoids mist from being attached to wire mesh block surface, improves the gas permeability of wire mesh block.
Further, filling body provided in an embodiment of the present invention is aerated layer by laying in the lower section of each packing layer,
Flow perturbation caused by the microbubble generated using aeration, the impurity being attached on filler is rinsed out, removes manpower to filler
Disassembly cleaning.
Further, sulfur-bearing lye collection device provided in an embodiment of the present invention passes through tower close in chemical absorbing tower 1
Inclined deflector is set at the position at bottom, good drainage can be played to sulfur-bearing lye, makes sulfur-bearing lye along water conservancy diversion
Plate flows into conical hopper, further goes out chemical absorbing tower by eluate conduit water conservancy diversion；Above-mentioned setting can not only realize well by
Sulfur-bearing lye is guided to biological oxidation desulfurization pond, moreover it is possible to reduce the noise that sulfur-bearing lye flows down tower bottom under the effect of gravity.
Further, biological oxidation desulfurization provided in an embodiment of the present invention pond passes through design heating coil, insulating layer, temperature
Monitor controller, pH monitor controller, aeration tube and dissolved oxygen monitoring device tie up the interior environment in biological oxidation desulfurization pond
It holds in control environment, to make hydrogen sulfide more be oxidized to sulphur simple substance as much as possible, reduces the generation of sulfate.
Further, in sedimentation basin provided in this embodiment the flow direction along liquid set gradually into guiding region,
Decanting zone and settling zone；Liquid guide flow is entered in decanting zone by deflector in guiding region, by pacifying on bracket in decanting zone
It is equipped with inclined tube, to promote fixer to separate, sludge pipe is discharged again after precipitating precipitating by settling zone；Above-mentioned setting can be really
Protect solid-liquid separation effect；The liquid clay content for ensuring that overflow goes out is less.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for methane bio-desulfurization system that the embodiment of the present invention provides；
Fig. 2 is a kind of structure cut-away view for demister that the embodiment of the present invention provides；
Fig. 3 is a kind of structural schematic diagram for filling body that the embodiment of the present invention provides；
Fig. 4 is the structure bottom view of the aeration tube in filling body shown in Fig. 3；
Fig. 5 is a kind of structural schematic diagram in biological oxidation desulfurization pond that the embodiment of the present invention provides.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Specific embodiment, structure, feature and its effect applied according to the present invention is described in detail such as in attached drawing and preferred embodiment
Afterwards.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one or more
Special characteristic, structure or feature in a embodiment can be combined by any suitable form.
Embodiment 1
The present embodiment provides a kind of methane bio-desulfurization systems, as shown in Figure 1, the methane bio-desulfurization system in the present embodiment
System includes: chemical absorbing tower 1, biological oxidation desulfurization pond 2, sedimentation basin 3 and lye pond 4.Specifically, from upper in chemical absorbing tower 1
Gas outlet 11, alkaline liquor distributor 14, filling body 15, inlet duct 16, sulfur-bearing lye collection device 17 are successively arranged under and.Its
In, filling body 15 is passed through by the biogas that inlet duct 16 enters in chemical absorbing tower 1 from lower to upper；It is sprayed by alkaline liquor distributor 14
Lye out, which enters in filling body 15, occurs reverse mass transfer with biogas, and the hydrogen sulfide for absorbing lye in biogas obtains sulfur-bearing alkali
Liquid, purified biogas are discharged from gas outlet 11, and sulfur-bearing lye flows under the influence of gravity into the sulfur-bearing lye collection device
In 17.Biological oxidation desulfurization pond 2 is connected to sulfur-bearing lye collection device 17, enters sulfur-bearing lye in biological oxidation desulfurization pond 2,
Using the desulfurization bacterium in biological oxidation desulfurization pond 2 by the sulfide oxidation in sulfur-bearing lye be elemental sulfur.Sedimentation basin 3 and biological oxygen
Change desulfurization pond 2 to be connected to, for the efflux in biological oxidation desulfurization pond 2 to be separated by solid-liquid separation, obtains regeneration lye.Lye pond
4 are connected to the alkaline liquor distributor 14 in chemical absorbing tower 1, for providing lye to alkaline liquor distributor 14；And lye pond 4 and precipitating
Pond 3 is connected to, and regenerates lye recycling for making.
The chemical absorbing tower of methane bio-desulfurization system design provided in this embodiment is by entering chemistry by inlet duct
Biogas in absorption tower passes through filling body from lower to upper；By alkaline liquor distributor spray lye enter in filling body with biogas
Reverse mass transfer occurs, increases the mass transfer contact of biogas and lye, improves lye to the absorptivity of hydrogen sulfide；And by independent
Biological oxidation desulfurization pond is set and improves metabolism of the sulfur bacteria to sulfur-bearing lye；And by the way that sedimentation basin and sedimentation basin is separately provided
The lye pond of connection can improve the precipitation and separation efficiency of sulfur-bearing sludge and the recycling rate of lye.Therefore, in the present embodiment
The desulfuration efficiency of methane bio-desulfurization system is high, and precipitation and separation is high-efficient and lye can reuse, to reduce into
This, good economy performance.
Embodiment 2
Preferably, the present embodiment provides a kind of methane bio-desulfurization system, compared with a upper embodiment, such as Fig. 1 and Fig. 2 institute
Show, the present embodiment further designs as follows:
It is additionally provided with demister 13 in chemical absorbing tower 1 in the present embodiment, for by the foam in the biogas after sulphur removal
It is removed with droplet；Demister 13 is located at the lower section of gas outlet 11, demister 13 is located at the top of alkaline liquor distributor 14；Wherein, it removes
Foam device 13 includes: limit cavity 131 and wire mesh block 133；Wherein, limit cavity 131 is tubular structure, and limits cavity
131 bottom is provided with multiple ventholes 1311, and the drainage silk 1312 extended downwardly is provided at each venthole 1311；Limit
The open top of cavity 131 is arranged.Wire mesh block 133 is filled in limit cavity 131 and encloses in the cavity being set as (wire mesh block
133 disc-shaped structures are adapted with the inner space of limit cavity)；Pressure cover includes that pressure ring 132 and Duo Gen press strip (do not show
Out)；Wherein, the structure annular in shape of pressure ring 132, and the pressure ring 132 is removably connect with limit cavity 131；Press strip
It encloses in the cavity set positioned at pressure ring 132, and is connect with pressure ring 132；Wherein, more press strips are crossed as reticular structure.
The demister installed at the position that the present embodiment passes through the close tower top in chemical absorbing tower includes by wire
Net volume at disk-like structure, can by outlet foam and droplet remove.Also, the demister of the present embodiment passes through in venthole
Place's setting drainage silk can drain the mist in wire mesh block at drop, and along drainage filament fall off, mist be avoided to adhere to
On wire mesh block surface, the gas permeability of wire mesh block is improved.
Embodiment 3
Preferably, the present embodiment provides a kind of methane bio-desulfurization system, compared with a upper embodiment, as shown in Figure 1, this
Embodiment further designs chemical absorbing tower as follows:
Sprayer-washer 12 is additionally provided in chemical absorbing tower 1 in the present embodiment；Wherein, sprayer-washer 12 is located at and removes
The top of foam device 13, positioned at the lower section of gas outlet 11；Chemical absorbing tower 1 is provided with discharge outlet 19；Sprayer-washer 12 is for connecting
Tonghua learn absorption tower 1 outside water system 121, using high pressure water cleaning chemical absorbing tower 1 and its inside component, as demister,
Alkaline liquor distributor, filling body etc..
Showering washing device is installed, when tower is included at the position that the present embodiment passes through the close top in chemical absorbing tower
Impurity effect operational effect when, open wash mill, wash demister and alkaline liquor distributor etc. using high pressure water flushing, and in tower
Water is filled, the cleaning to whole device is completed, after cleaning, sewage is discharged by discharge outlet.
In addition, the chemical absorbing tower in the present embodiment includes stainless steel tank body；Wherein, gas outlet 11 is provided with described stainless
The top of cylinder of steel body；Demister 13, alkaline liquor distributor 14, filling body 15, inlet duct 16, sulfur-bearing lye collection device 17 from
Top to bottm is sequentially distributed in the stainless cylinder of steel body.
Preferably, alkaline liquor distributor 14 includes pressure type comb distributor；Wherein, pressure type comb distributor include: into
Liquid mouth 141, liquid level tube 142, liquid dispensing tube 143 and comb 144.Pressure type comb distributor (is arranged by pipeline on pipeline
Have force (forcing) pump) it is connected to lye pond 4, spray lye by the nozzle of the comb side wall on pressure comb distributor
Out.
Preferably, inlet duct 16 includes inlet air distribution pipe；Wherein, multiple air inlets are offered on inlet air distribution pipe, and
Air inlet is arranged downward, and setting in this way improves gas distribution performance.Inlet air distribution pipe passes through outside UPVC pipeline and chemical absorbing tower
Force (forcing) pump 18 connect, in this way, realize flow biogas from bottom to top.
Preferably, gas outlet 11 is connected with total outlet pipe；Wherein, total outlet pipe is filled with air inlet respectively by pipeline
It sets, escape pipe connection；Wherein, when the biogas of gas outlet discharge is unqualified, the gas that gas outlet is discharged is again by first
Pipeline 112 is connected to inlet duct and enters in chemical absorbing tower and carry out multiplicating purification to biogas；When the gas outlet is discharged
Biogas qualification when, make gas outlet be discharged biogas flow to escape pipe 111.
Embodiment 4
Preferably, the present embodiment provides a kind of methane bio-desulfurization system, compared with a upper embodiment, such as Fig. 1, Fig. 3 and
Shown in Fig. 4, the present embodiment further designs the filling body 15 in chemical absorbing tower 1 as follows:
Filling body 15 includes at least one packing layer, is provided with aeration layer below each packing layer.Wherein, each to fill out
The bed of material includes cylindrical support part 151 and multiple fillers 153；Wherein, cylindrical support part 151 is fixed in chemical absorbing tower 1, tubular
The upper open end of supporting element 151 is connected with wire mesh 153, the lower open mouth end of cylindrical support part 151 is connected with wire mesh
153；Multiple fillers 153 dissipate heap and enclose in cavity made of setting in cylindrical support part 151, wire mesh 153.Filler 153, which is selected, to be drawn
Western ring filler.Specifically, Raschig ring filler includes Raschig ring ontology, and offers hole on Raschig ring ontology；And Raschig ring ontology
Including inner ring and outer rings；Wherein, inner ring and outer rings are connected by dowel；Wherein, hole is provided on the wall of outer ring.
Filling body provided in this embodiment is generated by laying aeration layer in the lower section of each packing layer using aeration
Flow perturbation caused by microbubble rinses out the impurity being attached on filler, removes manpower from and clears up the disassembly of filler.
Preferably, aeration layer includes aeration tube 154, aeration tube 154 it is closed at one end, the other end is located at chemistry for being connected to
Air compressor outside absorption tower；The lower section of aeration tube 154 offers multiple solarization air caps 1541.Solarization air cap is evenly arranged.Wherein,
Aeration tube 154 includes sequentially connected aeration single tube；And aeration single tube is arranged in parallel, so that aeration layer is in multilayer folding tubulose knot
Structure.It is arranged in this way, the area of aeration layer can be increased, increase the aeration quantity of unit area, improves the cleaning to packing layer
Efficiency.
Embodiment 5
Preferably, the present embodiment provides a kind of methane bio-desulfurization systems, compared with above-described embodiment, as shown in Figure 1, this
Embodiment further designs sulfur-bearing lye collection device 17 as follows:
Sulfur-bearing lye collection device 17 in the present embodiment includes: deflector 171, funnel 172 and eluate conduit 173.Its
In, deflector 171 is welded on the inner wall of chemical absorbing tower 1, and deflector 171 tilts down setting, and is in set with horizontal direction
Determine angle [alpha]；Wherein, 10 °≤α≤20 °；Preferably 15 °.Funnel 172 is connect with the lower end of deflector 171；Eluate conduit 173
One end is connected to funnel 172, and the other end is used to be connected to the biological oxidation desulfurization pond 2 for being located at chemical absorbing tower outer 1.
Sulfur-bearing lye collection device provided in this embodiment in chemical absorbing tower 1 at the position of tower bottom by being arranged
Inclined deflector can play good drainage to sulfur-bearing lye, and sulfur-bearing lye is made to flow into conical hopper along deflector
In, chemical absorbing tower is further gone out by eluate conduit water conservancy diversion；Above-mentioned setting can not only be realized well and be guided to sulfur-bearing lye
Biological oxidation desulfurization pond, moreover it is possible to reduce the noise that sulfur-bearing lye flows down tower bottom under the effect of gravity.
Embodiment 6
Preferably, the present embodiment provides a kind of methane bio-desulfurization systems, compared with above-described embodiment, such as Fig. 1 and Fig. 5 institute
Show, the present embodiment further designs biological oxidation desulfurization pond as follows:
Biological oxidation desulfurization pond 2 in the present embodiment includes: that pond body 20, aerating pipelines 24, dissolved oxygen monitoring device (are not shown
Out), heating coil 202, insulating layer 201, temperature monitor and control device 21 and pH monitor controller.
Pond body 20 is equipped with inlet 28 and liquid outlet 29 (preferably, inlet, liquid outlet are respectively provided with rectangular weir)；Its
In, the inlet 28 of pond body 20 is connected to sulfur-bearing lye collection device 17；Nutritious liquid in pond body 20, containing aerobic in nutrient solution
Thiophilic bacteria.
Aerating pipelines 24 are laid in the pond body 20；And the sky that the aeration tube road 24 is used to be connected to outside the pond body 20
Air compressor 25, to meet the dissolved oxygen demand of microbial metabolism in the pond body 20 by aeration.
Dissolved oxygen monitoring device includes the dissolved oxygen monitoring probe being placed in pond body 20, for detecting in the pond body 20
Dissolved oxygen amount makes the ratio (1.8-2.2) of the dissolved oxygen amount in the pond body 20 and sulfur content to realize: 1.Preferably, design one
Controller, controller control the unlatching of air compressor 25 according to dissolved oxygen amount, and realizing makes dissolved oxygen amount in the pond body 20 and contain
The ratio of sulfur content is (1.8-2.2): 1, so that hydrogen sulfide is more oxidized to sulphur simple substance, reduces the generation of sulfate.
Preferably, heating coil 202 is layed in the pond body 20；Preferably, the bottom of pond body 20, side wall are equipped with
Heating coil 202, in this way setting can make the intracorporal temperature in pond uniform as much as possible.Insulating layer is provided on the outer wall of pond body 20
201, to reduce the heat dissipation capacity of pond body 20.Temperature monitor and control device includes temperature monitoring probe 22 and temperature controller 21；Institute
Temperature monitoring probe 22 is stated to be placed in the pond body 20；The temperature controller 21 is connect with the heating coil 202, by institute
The temperature stated in pond body 20 controls between 28 DEG C -35 DEG C, provides control environment for the biological metabolism activity of desulfurization bacterium.Preferably
Ground, temperature measuring probe 22 are arranged multiple, are distributed at the intracorporal different location in pond, accurately to determine the intracorporal temperature in pond
Degree.
PH monitor controller includes being placed in the intracorporal pH monitoring probe 27 in the pond and for whether controlling alkali liquid tank 5
The controller of lye is injected into the pond body, here, controller is according to the pH value detected, control connection alkali liquid tank and pond
Whether the valve 52 on the pipeline 51 of body is opened, by the intracorporal pH value control in the pond in 6.8-7.5.
Preferably, being provided with overflow launder in the pond body 20 in biological oxidation desulfurization pond, the overflow launder and the sedimentation basin connect
It is logical, so that the liquid self-flowing in biological oxidation desulfurization pond enters in the sedimentation basin.
Biological oxidation desulfurization provided in this embodiment pond by design heating coil, insulating layer, temperature monitor and control device,
The interior environment in biological oxidation desulfurization pond is maintained control environment by pH monitor controller, aeration tube and dissolved oxygen monitoring device,
To make hydrogen sulfide more be oxidized to sulphur simple substance as much as possible, the generation of sulfate is reduced.
Embodiment 7
Preferably, the present embodiment provides a kind of methane bio-desulfurization systems, compared with above-described embodiment, as shown in Figure 1, this
Embodiment further designs sedimentation basin 3, lye pond 4 (also referred to as lean solution pond) as follows:
Preferably, guiding region, decanting zone, settling zone are set gradually into sedimentation basin 3 in the flow direction along liquid；Its
In, the guiding region includes the deflector 31 for being connected to the sedimentation basin inner wall, is provided with bracket in decanting zone, is disposed on bracket
There is inclined tube 32, to promote fixer to separate；Settling zone is pyramidal structure；Wherein, settling zone is connected with sludge pipe, so that sludge is logical
Cross sludge pipe discharge；Overflow port 35 is provided on the sedimentation basin, wherein overflow port 35 is arranged to triangular-notch weir, to intercept overflow
The surface scum of liquid.Specifically, sedimentation basin includes to match liquid guiding region, decanting zone, settling zone.Sedimentation basin inner wall welds deflector,
Optimize fluid flow characteristics, guarantees effect of settling.Rectangle support is welded in sedimentation basin, disposes plastic pipe chute, and inclination angle is 60 degree, is promoted
Into separation of solid and liquid.Settling zone is pyramidal structure, and precipitating sludge is discharged by perforated sludge discharge pipe.
Guiding region, decanting zone are set gradually into the flow direction along liquid in sedimentation basin provided in this embodiment and are sunk
Shallow lake area；Liquid guide flow is entered in decanting zone 31 by deflector 31 in guiding region, by being mounted on bracket in decanting zone 31
Inclined tube 32, to promote fixer to separate, sludge pipe is discharged again after precipitating precipitating by settling zone；Above-mentioned setting can ensure that
Solid-liquid separation effect；The liquid clay content for ensuring that overflow goes out is less.
Preferably, sedimentation basin 3 is connected to by the overflow port 35 with the lye pond 4.Preferably, the position of overflow port 35
It maintains at the position of sedimentation basin upper end.
Preferably, being provided with pH monitor controller in lye pond 4, the pH monitor controller is described including being placed in
PH monitoring probe in lye pond and the controller that lye whether is injected into the lye pond for controlling alkali liquid tank 6, in real time
Lye pH is between 7.8-8.5 in regulation pond.Lye pond 4 is connected to by pipeline with alkaline liquor distributor 4, and is provided on the pipeline
Force (forcing) pump 41.
Embodiment 8
Preferably, the present embodiment provides a kind of methane bio-desulfurization systems, compared with above-described embodiment, in the present embodiment
Methane bio-desulfurization system further includes Online Monitoring Control System.Pass through Online Monitoring Control System (including PLC and on-line monitoring
Instrument) entire process flow is monitored in real time, realize full autocontrol operation.
For example, Online Monitoring Control System and flowmeter, the pressure gauge, constituent analysis on the air inlet pipeline in inlet duct
Instrument connection, and the air inlet in inlet duct is controlled；Always going out at the Online Monitoring Control System and the gas outlet
Analytical instrument, valve connection on air pipe, according to the flow direction of outlet Composition Control outlet；The Online Monitoring Control system
System and dissolved oxygen monitoring probe, the pH monitoring probe, temperature monitoring probe in biological oxidation desulfurization pond, by the biological oxygen
Change the dissolved oxygen amount in desulfurization pond, pH value, temperature to control within the set range；The Online Monitoring Control System and the lye pond
In pH monitoring probe connection, by the lye pond pH value control within the set range.
To sum up, the process route of methane bio-desulfurization system provided by the above embodiment are as follows: biogas is pumped in gas pressurized
Effect is lower to enter chemical absorbing tower packing bottom by inlet duct, under pressure, from lower to upper uniformly through packing layer.
Lye is sprayed into tiny droplet by the drive nozzle of chemical absorbing tower upper liquid distributor and lands, and reverse pass occurs with biogas
Matter, so that purified biogas is discharged after demister from the gas outlet of tower top by the hydrogen sulfide absorption in biogas.It absorbs
Lye after hydrogen sulfide passes through sulfur-bearing lye collection device under the effect of gravity and flows into biological oxidation desulfurization pond, using therein good
Sulfide oxidation is elemental sulfur by oxygen thiophilic bacteria.Biological desulphurization pond goes out liquid and is entered in sedimentation basin by overflow launder, through precipitating point
Regeneration lye is obtained from effect.Regeneration lye is entered in lean solution pond in sedimentation basin by overflow pipe, after regulating and controlling pH, is followed through lye
Ring, which is pumped to, to be repeated to spray in the alkaline liquor distributor of chemical absorbing top of tower.In addition, when attachment impurity effect operation effect in tower
When fruit, wash mill is opened, washes demister and alkaline liquor distributor etc. using high pressure water flushing, and fill water in tower, completed to whole
After cleaning, sewage is discharged by discharge outlet for the cleaning of a device.
In addition, biogas flow 5000m3/ d, air inlet H2S concentration 3000-5000ppm, it is desirable that outlet H2S concentration is not more than
When 200ppm, each unit service condition is as follows: packed absorber is having a size of 550 × 8500mm of Ф.Aeration zone: superelevation 0.6m, water
Deep 2.5m, hydraulic detention time 2.5h, the blow rate required: 12.84m3/h.Length and width all take the settling zone 6m: superelevation 0.3m, with aeration zone water
Potential difference 0.2m, sedimentation time 1.5h.
To sum up, the chemical absorbing tower of methane bio-desulfurization system design provided in an embodiment of the present invention passes through by inlet duct
Pass through filling body from lower to upper into the biogas in chemical absorbing tower；Filling body is entered by the lye that alkaline liquor distributor sprays
In with biogas reverse mass transfer occurs, increase the mass transfer contact of biogas and lye, improve lye to the absorptivity of hydrogen sulfide；And
Metabolism of the sulfur bacteria to sulfur-bearing lye is improved by the way that biological oxidation desulfurization pond is separately provided；And by be separately provided sedimentation basin,
The lye pond being connected to sedimentation basin can improve the precipitation and separation efficiency of sulfur-bearing sludge and the recycling rate of lye.Therefore, this reality
The desulfuration efficiency for applying the methane bio-desulfurization system in example is high, and precipitation and separation is high-efficient and lye can reuse, to drop
Low cost, good economy performance.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (10)
1. a kind of methane bio-desulfurization system, characterized in that it comprises:
Chemical absorbing tower, be successively arranged in the chemical absorbing tower from top to bottom gas outlet, alkaline liquor distributor, filling body, into
Device of air, sulfur-bearing lye collection device；Wherein, the biogas in the chemical absorbing tower is entered from lower to upper by the inlet duct
Pass through the filling body；Entered by the lye that the alkaline liquor distributor sprays and reverse pass occurs in the filling body with biogas
Matter, the hydrogen sulfide for absorbing lye in biogas obtain sulfur-bearing lye, and purified biogas is discharged from the gas outlet, sulfur-bearing alkali
Liquid flows under the influence of gravity into the sulfur-bearing lye collection device；
Biological oxidation desulfurization pond, biological oxidation desulfurization pond are connected to the sulfur-bearing lye collection device, make sulfur-bearing lye into
Enter in biological oxidation desulfurization pond, using the desulfurization bacterium in biological oxidation desulfurization pond by the sulfide oxygen in sulfur-bearing lye
Turn to elemental sulfur；
Sedimentation basin, the sedimentation basin are connected to biological oxidation desulfurization pond, for by the stream in biological oxidation desulfurization pond
Liquid is separated by solid-liquid separation out, obtains regeneration lye；
Lye pond, the lye pond are connected to the alkaline liquor distributor in the chemical absorbing tower, for the alkaline liquor distributor
Lye is provided；And the lye pond is connected to the sedimentation basin, regenerates lye recycling for making.
2. methane bio-desulfurization system according to claim 1, which is characterized in that be additionally provided in the chemical absorbing tower
Demister, for by the biogas after sulphur removal foam and droplet remove；The demister is located at the lower section of the gas outlet, institute
State the top that demister is located at the alkaline liquor distributor；Wherein, the demister includes:
Cavity is limited, the limit cavity is tubular structure, and the bottom of the limit cavity is provided with multiple ventholes, each
The drainage silk extended downwardly is provided at the venthole；The open top setting of the limit cavity；
Wire mesh block, the wire mesh block are filled in the limit cavity；
Pressure cover, the pressure cover include pressure ring and Duo Gen press strip；Wherein, pressure ring structure annular in shape, and the pressure ring with
The limit cavity removably connects；The press strip is located at the pressure ring and encloses in the cavity set, and with the pressure ring
Connection；Wherein, more press strips are crossed as reticular structure.
3. methane bio-desulfurization system according to claim 2, which is characterized in that be additionally provided in the chemical absorbing tower
Sprayer-washer；Wherein, the sprayer-washer is located at the top of the demister, positioned at the lower section of the gas outlet；It is described
Chemical absorbing tower is provided with discharge outlet；The sprayer-washer is used for the water system being connected to outside chemical absorbing tower, utilizes high pressure water
Clean the chemical absorbing tower；And/or
The chemical absorbing tower includes stainless steel tank body；Wherein, the gas outlet is provided with the top of the stainless steel tank body；Institute
Demister, alkaline liquor distributor, filling body, inlet duct are stated, sulfur-bearing lye collection device is sequentially distributed from top to bottom described
In stainless cylinder of steel body.
4. methane bio-desulfurization system according to claim 1, which is characterized in that the alkaline liquor distributor includes pressure type
Comb distributor；Wherein, the pressure type comb distributor is connected to by pipeline with the lye pond, makes alkali under pressure
Liquid is sprayed by the nozzle of the comb side wall on the pressure comb distributor；And/or
The inlet duct includes inlet air distribution pipe；Wherein, multiple air inlets, and air inlet are offered on the inlet air distribution pipe
It is arranged downward；The inlet air distribution pipe is connect by pipeline with the force (forcing) pump outside the chemical absorbing tower；And/or
The gas outlet is connected with total outlet pipe；Wherein, total outlet pipe connects with the inlet duct, escape pipe respectively
It connects；Wherein, when the biogas of gas outlet discharge is unqualified, the gas that gas outlet is discharged enters again by inlet duct
Multiplicating purification is carried out to biogas in chemical absorbing tower；When the biogas qualification of gas outlet discharge, gas outlet is discharged
Biogas flow to escape pipe.
5. methane bio-desulfurization system according to claim 1, which is characterized in that the filling body includes:
At least one packing layer, each described filler layer include cylindrical support part and multiple fillers；Wherein, the cylindrical support part
It is fixed in the chemical absorbing tower, the upper open end of the cylindrical support part is connected with wire mesh, the cylindrical support part
Lower open mouth end be connected with wire mesh；Multiple fillers dissipate heap and enclose made of setting in the cylindrical support part, wire mesh
In cavity；
It is aerated layer, is equipped with aeration layer below each packing layer；Wherein, the aeration layer includes aeration tube；The aeration tube
It is closed at one end, the other end is used for air compressor be connected to outside the chemical absorbing tower；It is offered below the aeration tube
Multiple solarization air caps；
Wherein, the aeration tube includes the multiple aeration single tubes being sequentially communicated；And multiple aeration single tubes are arranged in parallel；The aeration
Hole is evenly arranged；
Wherein, the filler selects Raschig ring filler.
6. methane bio-desulfurization system according to claim 1, which is characterized in that the sulfur-bearing lye collection device packet
It includes:
Deflector, the deflector are welded on the inner wall of the chemical absorbing tower, and the deflector tilts down setting, and with
Horizontal direction is in set angle α；Wherein, 10 °≤α≤20 °；
Funnel, the funnel are connect with the lower end of the deflector；
Eluate conduit, one end of the eluate conduit are connected to the funnel, and the other end is located at outside chemical absorbing tower for being connected to
Biological oxidation desulfurization pond.
7. methane bio-desulfurization system according to claim 1, which is characterized in that biological oxidation desulfurization pond includes:
Pond body, the pond body are equipped with inlet and liquid outlet；Wherein, the inlet of the pond body and the sulfur-bearing lye, which are collected, fills
Set connection；There is aerobic thiophilic bacteria in the pond body；
Aerating pipelines, the aeration tube road are laid in the pond body；And the aeration tube road is for being connected to outside the pond body
Air compressor, to meet the dissolved oxygen demand of microbial metabolism in the pond body by aeration；
Dissolved oxygen monitoring device, the dissolved oxygen monitoring device includes being placed in the intracorporal dissolved oxygen monitoring probe in the pond, for monitoring
The intracorporal dissolved oxygen amount in the pond out makes the ratio (1.8-2.2) of the intracorporal dissolved oxygen amount in the pond and sulfur content to realize: 1；
Heating coil, the heating coil are layed in the pond body；
Insulating layer is provided with insulating layer on the outer wall of the pond body；
Temperature monitor and control device, the temperature monitor and control device includes temperature monitoring probe and temperature controller；The temperature
Degree monitoring probe is placed in the pond body；The temperature controller is connect with the heating coil, by the intracorporal temperature in the pond
Degree control is between 28 DEG C -35 DEG C；
PH monitor controller, the pH monitor controller include being placed in the intracorporal pH monitoring probe in the pond and for controlling
Whether alkaline flow container injects the controller of lye into the pond body, by the intracorporal pH value control in the pond in 6.8-7.5.
8. methane bio-desulfurization system according to claim 7, which is characterized in that the pond body in biological oxidation desulfurization pond
On be provided with overflow launder, the overflow launder is connected to the sedimentation basin, so that the liquid self-flowing in biological oxidation desulfurization pond
Into in the sedimentation basin；And/or
Guiding region, decanting zone, settling zone are set gradually into the sedimentation basin in the flow direction along liquid；Wherein, described to lead
Flowing area includes the deflector for being connected to the sedimentation basin inner wall；It is provided with bracket in the decanting zone, is mounted on the bracket
Inclined tube, to promote fixer to separate；The settling zone is pyramidal structure；
Wherein, the settling zone is connected with sludge pipe, so that sludge is discharged by sludge pipe；Overflow is provided on the sedimentation basin
Mouthful, wherein the overflow port is arranged to triangular-notch weir, to intercept the surface scum of overflowing liquid.
9. methane bio-desulfurization system according to claim 8, which is characterized in that the sedimentation basin passes through the overflow port
It is connected to the lye pond；And/or
PH monitor controller is provided in the lye pond, the pH monitor controller includes being placed in the lye pond
PH monitoring probe and for control alkali liquid tank whether into the lye pond inject lye controller.
10. -9 described in any item methane bio-desulfurization systems according to claim 1, which is characterized in that the biogas biology is de-
Sulphur system further include:
The flowmeter on air inlet pipeline, pressure in Online Monitoring Control System, the Online Monitoring Control System and inlet duct
Power table, analytical instrument connection, and the air inlet in inlet duct is controlled；The Online Monitoring Control System and it is described go out
The analytical instrument on total outlet pipe, valve connection at port, according to the flow direction of outlet Composition Control outlet；It is described
Dissolved oxygen monitoring probe, pH monitoring probe, temperature monitoring probe in line monitor control system and biological oxidation desulfurization pond connect
It connects, the dissolved oxygen amount in biological oxidation desulfurization pond, pH value, temperature is controlled within the set range；The on-line monitoring control
System processed is connect with the pH monitoring probe in the lye pond, within the set range by the pH value control in the lye pond；
Wherein, the Online Monitoring Control device includes PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303730.3A CN109107359A (en) | 2018-11-02 | 2018-11-02 | A kind of methane bio-desulfurization system |
Applications Claiming Priority (1)
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