CN108421400A - It is a kind of can on-line regeneration biogas dry desulfurization device and its sulfur method - Google Patents
It is a kind of can on-line regeneration biogas dry desulfurization device and its sulfur method Download PDFInfo
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- CN108421400A CN108421400A CN201810482081.1A CN201810482081A CN108421400A CN 108421400 A CN108421400 A CN 108421400A CN 201810482081 A CN201810482081 A CN 201810482081A CN 108421400 A CN108421400 A CN 108421400A
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- biogas
- air
- dry
- desulfurizing agent
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 34
- 230000008929 regeneration Effects 0.000 title claims abstract description 32
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 27
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title description 5
- 229910052717 sulfur Inorganic materials 0.000 title description 5
- 239000011593 sulfur Substances 0.000 title description 5
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 107
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 66
- 238000011049 filling Methods 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 25
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000008439 repair process Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 6
- 230000009719 regenerative response Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 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
- 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 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
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- KAEAMHPPLLJBKF-UHFFFAOYSA-N iron(3+) sulfide Chemical compound [S-2].[S-2].[S-2].[Fe+3].[Fe+3] KAEAMHPPLLJBKF-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 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
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement 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
- B01D53/81—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
- B01D53/46—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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to it is a kind of can on-line regeneration biogas dry desulfurization device, including dry-type desulfurizing tower main body, on-line regeneration facility and PLC controller, the on-line regeneration facility includes the air intake duct and electronic thermometer being connected with biogas air inlet pipe, the input end of the air intake duct is connected with air compressor machine, it is disposed with air flow meter on the air intake duct, electric control valve and air check valve, the electron temperature is calculated as several, it is arranged in desulfurizing agent filling area different location, the biogas flowmeter, gas detecting instrument, air flow meter, electric control valve, electronic thermometer and air compressor machine are connect with PLC controller.The biogas dry desulfurization device of the present invention realizes dry desulfurization device internal oxidition iron desulfurizing agent on-line regeneration, extend 34 times of desulfurizing agent service life, saves desulfurizing agent expense, while realizing automatic operating, exempt the security risk that misoperation is brought, is ensured again for biogas using increasing by one.
Description
Technical field
The present invention relates to it is a kind of can on-line regeneration biogas dry desulfurization device and its sulfur method, belong to dry desulfurization skill
Art field.
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.
To ensure biogas desulfurization effect, need to use dry desulfurization tower apparatus.Dry desulfurization is using desulfurizing agent to hydrogen sulfide
It is adsorbed or is reacted and removed.Current more common dry-desulphurizer main component is iron oxide, can be
It is run under normal temperature and pressure, 90% or more can be reached to hydrogen sulfide stripping efficiency, while to thio-alcohol organic sulfur and most of nitrogen
Oxygen compound also has certain removal effect.It is simple and convenient to operate using process device, and desulfurizing agent resistance is small, and because oxygen
It is abundant to change iron resource, it is cheap, there is apparent advantage in biogas fine desulfurizing technology, therefore it is current most commonly used biogas
Sulfur method.Its desulfurization formula is as follows：
Fe2O3+3H2S=Fe2S3+3H2O
Fe2O3+3H2S=2FeS+3H2O
Fe2O3+ FeS=3FeO+S
Biogas contacts to be removed with dry-desulphurizer in dry desulfurization device.But the iron oxide in desulfurizing agent contains
When amount reaches 30% or more, desulfurizing agent cannot be continuing with, and regeneration rear is needed to can be used.However majority cannot using unit
Desulfurizing agent can only be replaced when desulfurizing agent is ineffective by grasping ferric oxide desulfurizer regeneration method, cause the wave of desulfurizing agent
Take.And if misoperation in desulfurizing agent replacement process, a large amount of ingresss of air, then can very exothermic, bring security risk.Patent Shen
Please publication No. CN104923076A, denomination of invention：A kind of failure ferric oxide desulfurizer regeneration method of safety non-pollution, it is main to walk
Suddenly have：Inert gas is passed through into line replacement into the dry desulfurizing tower containing failure ferric oxide desulfurizer；It is passed through after displacement by containing
The mixed gas that carrier of oxygen and inert gas are constituted, carries out regenerative response；The gas that regenerative response generates is passed through in absorption tower
With Mg (OH)2Gas after reaction is passed through in dry desulfurizing tower with the oxygen-containing gas that supplement is passed through and recycles by solution reaction again
Carry out regenerative response.This method takes away the heat generated when regeneration using inert gas, and it is strongly exothermic to greatly reduce regenerative response
The uncontrollable danger of temperature that process is brought；Without using organic solvent, cost is greatly reduced；The magnesium salts of generation is Mg
SO4, will not pollute；Without that will fail, desulfurizing agent takes apart from dry desulfurizing tower, reduces the labor intensity of worker,
Improve the working environment of worker；Desulfurizing agent has desulphurizing ability again after regeneration, quickly desulphurization system can be allowed to put into operation.
But it has the following problems：This method needs the biogas wherein contained using inert gas replacement, is taken away again using inert gas
The heat generated when raw, greatly reduces the uncontrollable danger of temperature that the strongly exothermic process of regenerative response is brought, of high cost, work
Skill is complicated.
Invention content
The present invention provides it is a kind of can on-line regeneration biogas dry desulfurization device and its sulfur method, solve existing dry
It needs to use inert gas in oxidant regenerative process in method desulfurizer, it is of high cost, the problems such as complex process.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
It is a kind of can on-line regeneration biogas dry desulfurization device, including dry-type desulfurizing tower main body, on-line regeneration facility and PLC
Controller, if dried layer desulfurizing agent supporting clapboard is arranged in the inside of the dry-type desulfurizing tower main body, desulfurizing agent supporting clapboard 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 natural pond are set gradually in the biogas air inlet pipe
Air-flow gauge is provided with methane outlet and exhaust outlet, methane outlet setting at the top of the dry-type desulfurizing tower main body
There is gas detecting instrument；The on-line regeneration facility includes the air intake duct being connected with biogas air inlet pipe and online temperature
Meter, the input end of the air intake duct are connected with air compressor machine, and air stream is disposed on the air intake duct
Gauge, electric control valve and air check valve, the online temperature are calculated as several, are arranged in desulfurizing agent filling area difference position
Set, the biogas flowmeter, gas detecting instrument, air flow meter, electric control valve, online thermometer and air compressor machine with
PLC controller connects.
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.
Further, a preferred embodiment of the present invention is：The dry-type desulfurizing tower main body is using heatproof at 70 DEG C or more
Fiberglass or stainless steel.
Further, a preferred embodiment of the present invention is：The superficial linear velocity of the dry-type desulfurizing tower main body should be
0.2-0.4m/s, single layer desulfurizing agent piling height are 0.3-0.8m.
Present invention provides it is a kind of can on-line regeneration biogas dry desulfurizing process, biogas dry method using the present invention
Desulfurizer includes the following steps：
(1) biogas is entered by biogas admission line in dry-type desulfurizing tower main body, after biogas enters in main body tower, is led to successively
Cross desulfurizing agent supporting clapboard, desulfurizing agent is discharged behind filling area by methane outlet, gas detecting instrument measurement outlet concentration of hydrogen sulfide
And oxygen concentration, when being higher than 100ppm when outlet hydrogen sulfide content is continuous 1 small, desulfurizing agent has been substantially saturated, and is started and is existed
Line regenerates；
(2) air is injected by air intake pipe by air compressor machine, using oxygen in air to the desulfurizing agent that reacted
It is regenerated, air flow meter is used for meter air amount, and electric control valve is used for adjusting air inflow, and online thermometer is to measure tower
Wall temperature, when temperature is higher than 50 DEG C, the temperature sensor of online thermometer preparation sends out 4-20mA signals and passes to PLC controls
Device, PLC controller control solenoid valve valve and close, and reduce air inflow, delay reproduction speed, when the temperature is low, motorized adjustment
Valve valve opening increases, and accelerates reproduction speed, this temperature can be configured according to field condition, and the gas ejected introduces carbonic acid
Absorption is handled in sodium absorbing liquid；
(3) in regenerative process, electric control valve unlatching is temperature controlled, and when opening for the first time, aperture should be according to biogas stream
Gauge 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/, nothing
By when, air mass flow count value should all 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.
Beneficial effects of the present invention：
The biogas dry desulfurization device of the present invention realizes dry desulfurization device internal oxidition iron desulfurizing agent on-line regeneration, extends
3-4 times of desulfurizing agent service life saves desulfurizing agent expense, while realizing automatic operating, exempts the peace that misoperation is brought
Full blast danger is ensured for biogas using increasing by one again.The device of the invention is simply only by the online thermometer of increase, electric adjustable
Valve, air check valve and air compressor machine are saved, is achieved that ferric oxide desulfurizer on-line regeneration, it is simple in structure, it is at low cost.
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；
In figure, 1, biogas admission line；2, biogas check valve；3, biogas flowmeter；4, air compressor machine；5, air flow meter；
6, electric control valve；7, air intake pipe；8, air check valve；9, dry type desulfurizing tower base；10, desulfurizing agent supporting clapboard；
11, desulfurizing agent manhole；12, desulfurizing agent filling area；13, dry-type desulfurizing tower main body；14, online thermometer；15, methane outlet；
16, exhaust outlet；17, gas detecting instrument；18, discharge outlet；19, PLC controller.
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
It is a kind of can on-line regeneration biogas dry desulfurization device, including dry-type desulfurizing tower main body 13, on-line regeneration facility and
PLC controller 19, if the dry-type desulfurizing tower main body 13 inside be arranged dried layer desulfurizing agent supporting clapboard, desulfurizing agent support every
Plate 10 divides dry-type desulfurizing tower main body 13 for several desulfurizing agent filling areas 12, the desulfurizing agent filling area 12 filling iron oxide
The bottom of desulfurizing agent, the dry-type desulfurizing tower main body 13 is provided with biogas air inlet pipe, is set successively in the biogas air inlet pipe
Biogas check valve 2 and biogas flowmeter 3 are set, the top of the dry-type desulfurizing tower main body 13 is provided with methane outlet 15 and exhaust
Mouth 16, the methane outlet 15 is provided with gas detecting instrument 17；The on-line regeneration facility includes and biogas air inlet pipe phase
The input end of the air intake duct of connection and online thermometer 14, the air intake duct is connected with air compressor machine 4, described
Air flow meter 5, electric control valve 6 and air check valve 8, the online thermometer 14 are disposed on air intake duct
For several, it is arranged in 12 different location of desulfurizing agent filling area, the biogas flowmeter 3, gas detecting instrument 17, air mass flow
Meter 5, electric control valve 6, online thermometer 14 and electric control valve 6 are connect with PLC controller 19.
Desulfurizing agent supporting clapboard 10 is two in the present embodiment, and desulfurizing agent supporting clapboard 10 divides dry-type desulfurizing tower main body 13
For two desulfurizing agent filling areas 12, electronic thermometer 14 is two, and the top in desulfurizing agent filling area 12 is arranged.
Further include dry type desulfurizing tower base 9, desulfurizing agent manhole 11 and discharge outlet 18 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。
Fiberglass or stainless steel of the dry-type desulfurizing tower main body 13 using heatproof at 70 DEG C or more.
The superficial linear velocity of dry-type desulfurizing tower main body 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 is to prevent gas from returning, and biogas flowmeter is to monitor charge flow rate, to calculate air inlet sky
Throughput.After biogas enters in main body tower.The effect one of desulfurizing agent supporting clapboard is the filling for being to support desulfurizing agent, keeps it solid
Fixed, in addition also functioning to makes the equally distributed effect of biogas, avoids the short stream in part；Mainly load iron oxide desulfurization in desulfurizing agent filling area
Agent is yellow or brown color small cylinder, diameter about 4-6mm, length 5-15mm, bulk density 0.7-0.9kg/L, dress
The amount of filling out and filling region need to be determined according to design biogas air inflow and hydrogen sulfide removal amount.The purpose of dry type desulfurizing tower base is to protect
It is firm to demonstrate,prove Structure of Flue Gas Desulfuration Absorbing, can be needed to increase reinforcing prop etc. according to structure in design.The purpose of desulfurizing tower manhole is to fill
It fills out desulfurizing agent and carries out maintenance setting in tower, be typically designed a diameter of 600mm.Exhaust outlet should be at closing for a long time.Gas detection
Instrument is used for measuring outlet concentration of hydrogen sulfide and oxygen concentration, when being higher than 100ppm when outlet hydrogen sulfide content is continuous 1 small, says
Bright desulfurizing agent has been substantially saturated, and needs to start on-line regeneration.Dry-type desulfurizing tower water outlet is discharged by discharge outlet.
Embodiment 2
It is a kind of can on-line regeneration biogas dry desulfurizing process, using the biogas dry desulfurization device of embodiment 1, including with
Lower step：
(1) biogas is entered by biogas admission line 1 in dry-type desulfurizing tower main body 13, after biogas enters in main body tower, according to
It is secondary by being discharged by methane outlet 15 behind desulfurizing agent supporting clapboard 10, desulfurizing agent filling area 12, gas detecting instrument 17 determines
Mouth concentration of hydrogen sulfide and oxygen concentration, when being higher than 100ppm when outlet hydrogen sulfide content is continuous 1 small, desulfurizing agent is basic
Saturation starts on-line regeneration；
(2) air, the desulfurization using oxygen in air to reacting are injected by air intake pipe 7 by air compressor machine 4
Agent is regenerated, and air flow meter 5 is used for meter air amount, and electric control valve 6 is used for adjusting air inflow, electronic thermometer 14 with
Tower wall temperature is measured, when temperature is higher than 50 DEG C, the temperature sensor that electronic thermometer 14 is prepared sends out the transmission of 4-20mA signals
To PLC controller 19, PLC controller 19 controls electric control valve and closes, and reduces air inflow, delays reproduction speed, when temperature compared with
When low, 6 valve opening of electric control valve increases, and accelerates reproduction speed, this temperature can be configured, eject according to field condition
Gas be introduced into sodium carbonate absorbing liquid absorption and handle；
(3) in regenerative process, electric control valve 6 is opened temperature controlled, and when opening for the first time, aperture should be according to biogas stream
Gauge 3 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, 5 numerical value of air flow meter should be less than the above numerical value, and exit gas detector 17 detects oxygen concentration and 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 (6)
1. it is a kind of can on-line regeneration biogas dry desulfurization device, it is characterised in that：Including dry-type desulfurizing tower main body, on-line regeneration
Device and PLC controller, if dried layer desulfurizing agent supporting clapboard, desulfurizing agent support is arranged in the inside of the dry-type desulfurizing tower main body
Dry-type desulfurizing tower main body is divided into several desulfurizing agent filling areas by partition board, and iron oxide desulfurization is loaded in the desulfurizing agent filling area
Agent.The bottom of the dry-type desulfurizing tower main body is provided with biogas air inlet pipe, and biogas is set gradually in the biogas air inlet pipe
Check valve and biogas flowmeter are provided with methane outlet and exhaust outlet, the natural pond at the top of the dry-type desulfurizing tower main body
Gas outlet is provided with gas detecting instrument；The on-line regeneration facility include the air intake duct being connected with biogas air inlet pipe and
The input end of electronic thermometer, the air intake duct is connected with air compressor machine, is set gradually on the air intake duct
There are air flow meter, electric control valve and air check valve, the online temperature to be calculated as several, setting is loaded in desulfurizing agent
Area's different location, the biogas flowmeter, gas detecting instrument, air flow meter, electric control valve, online thermometer and pneumatics
Machine is connect with PLC controller.
2. it is according to claim 1 it is a kind of can on-line regeneration biogas dry desulfurization device, it is characterised in that：Described is dry
Further include dry type desulfurizing tower base, desulfurizing agent manhole and discharge outlet on formula desulfurizing tower.
3. it is according to claim 1 it is a kind of can on-line regeneration biogas dry desulfurization device, it is characterised in that：The oxygen
It is yellow or brown color small cylinder, diameter 4-6mm, length 5-15mm, bulk density 0.7-0.9kg/ to change iron desulfurizing agent
L。
4. a kind of biogas dry desulfurization device of on-line regeneration according to claim 1, it is characterised in that：The dry type
Desulfurizing tower main body uses fiberglass or stainless steel of the heatproof at 70 DEG C or more.
5. a kind of biogas dry desulfurization device of on-line regeneration according to claim 1, it is characterised in that：The dry type
The superficial linear velocity of desulfurizing tower main body should be 0.3-0.8m in 0.2-0.4m/s, single layer desulfurizing agent piling height.
6. it is a kind of can on-line regeneration biogas dry desulfurizing process, which is characterized in that use biogas dry method described in claim 1
Desulfurizer includes the following steps：
(1) biogas is entered by biogas admission line in dry-type desulfurizing tower main body, after biogas enters in main body tower, is passed sequentially through de-
Sulphur agent supporting clapboard, desulfurizing agent are discharged behind filling area by methane outlet, and gas detecting instrument measures outlet concentration of hydrogen sulfide and oxygen
Gas concentration, when being higher than 100ppm when outlet hydrogen sulfide content is continuous 1 small, desulfurizing agent has been substantially saturated, and is started online again
Raw, dry-type desulfurizing tower water outlet is discharged by discharge outlet；
(2) air is injected by air intake pipe by air compressor machine, the desulfurizing agent reacted is carried out using oxygen in air
Regeneration, air flow meter are used for meter air amount, and electric control valve is used for adjusting air inflow, and online thermometer is to measure tower wall temperature
Degree, when temperature is higher than 50 DEG C, the temperature sensor of electronic thermometer preparation sends out 4-20mA signals and passes to PLC controller,
PLC controller controls solenoid valve valve and closes, and reduces air inflow, delays reproduction speed, when the temperature is low, electric control valve valve
Door aperture increases, and accelerates reproduction speed, this temperature can be configured according to field condition, and the gas ejected introduces sodium carbonate and inhales
Absorption in liquid is received to handle；
(3) in regenerative process, electric control valve unlatching is temperature controlled, and when opening for the first time, aperture should be according to biogas flowmeter
Control, characterized with air mass flow, general air mass flow is the oxygen concentration of biogas flow × concentration of hydrogen sulfide × 4/, no matter what
When, air mass flow count value should all be less than the above numerical value, and exit gas detector detection oxygen concentration should be less than 1%, if greatly
In 1%, electromagnetism valve opening should reduce.
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| CN112107975A (en) * | 2020-08-24 | 2020-12-22 | 新兴铸管股份有限公司 | Desulfurization system regeneration air compression automatic control system |
| CN112226251A (en) * | 2020-09-28 | 2021-01-15 | 北京中科鸿飞环境工程技术有限公司 | Dry desulfurization system and method for fuel gas containing high-concentration sulfide |
| CN115382522A (en) * | 2022-08-24 | 2022-11-25 | 重庆赛迪热工环保工程技术有限公司 | Blast furnace gas desulfurizer regeneration system and method |
| CN117304993A (en) * | 2023-10-12 | 2023-12-29 | 中国华电科工集团有限公司 | Chain plate type biogas desulfurization device and method |
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