CN105771593A - Method for removing hydrogen sulfide in industrial raw material gas and recycling sulfur - Google Patents
Method for removing hydrogen sulfide in industrial raw material gas and recycling sulfur Download PDFInfo
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- CN105771593A CN105771593A CN201610122432.9A CN201610122432A CN105771593A CN 105771593 A CN105771593 A CN 105771593A CN 201610122432 A CN201610122432 A CN 201610122432A CN 105771593 A CN105771593 A CN 105771593A
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- sulfur
- gas
- raw material
- desulfurizing tower
- regeneration device
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 239000007789 gas Substances 0.000 title claims abstract description 80
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 68
- 239000011593 sulfur Substances 0.000 title claims abstract description 68
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002994 raw material Substances 0.000 title claims abstract description 39
- 238000004064 recycling Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 claims abstract description 79
- 238000010521 absorption reaction Methods 0.000 claims abstract description 41
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 39
- 239000012670 alkaline solution Substances 0.000 claims abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 150000003464 sulfur compounds Chemical class 0.000 claims abstract description 4
- 230000008929 regeneration Effects 0.000 claims description 48
- 238000011069 regeneration method Methods 0.000 claims description 48
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 19
- 239000005864 Sulphur Substances 0.000 claims description 18
- 239000002244 precipitate Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- -1 biogas Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001351 cycling effect Effects 0.000 claims description 3
- 239000002440 industrial waste Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 230000003252 repetitive effect Effects 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- 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
- B01D53/46—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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
- C01B17/05—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by wet processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/105—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing metal compounds other than alkali- or earth-alkali carbonates, -hydroxides, oxides, or salts of inorganic acids derived from sulfur
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
- C10K1/124—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors containing metal compounds other than alkali- or earth-alkali carbonates, hydroxides- or oxides- or salts of inorganic acids derived from sulfur
-
- 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
-
- 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
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/16—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/20—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/541—Absorption of impurities during preparation or upgrading of a fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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- Analytical Chemistry (AREA)
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- Gas Separation By Absorption (AREA)
- Industrial Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for removing hydrogen sulfide in industrial raw material gas and recycling sulfur.The method includes the following steps that the industrial raw material gas enters the middle part of a desulfurizing tower and makes countercurrent contact with an alkaline solution, the alkaline solution absorbs sulfur-containing matter in the industrial raw material gas, and the gas with the sulfur-containing matter absorbed flows out from a flowing-out opening in the top or the upper portion of the desulfurizing tower; absorption liquid flows into inner cavities of A sulfur regenerators through pipelines respectively, the absorption liquid flowing into the sulfur regenerators and air or oxygen in the sulfur regenerators are subjected to a mixing reaction under the action of a desulfurizing catalyst in the sulfur regenerators, and thus a sulfur compound in the absorption liquid is converted into elemental sulfur to be separated out; a separation solution is conveyed into an alkaline solution containing cavity and mixed with the alkaline solution to form an alkaline mixed solution, and the alkaline mixed solution is conveyed into a desulfurizing tower inner cavity in the top or the upper portion of the desulfurizing tower and continues to make countercurrent contact with the industrial raw material gas to absorb sulfur-containing matter; the process is repeatedly and cyclically performed, wherein A is a natural number not equal to zero.The method has the advantages that energy is saved, production cost is reduced, and sulfur recycling efficiency is high.
Description
Technical field
The present invention relates to industrial hydrogen sulfide containing unstripped gas and waste gas removing sulfuldioxide field, a kind of raw material of industry gas especially removes hydrogen sulfide gas the method regenerating sulfur.
Background technology
When economic situation is not good at home, each produce and enviromental protection enterprise is cost efficiency and many effort are made in energy-saving and emission-reduction.Owing to gas componant, usability and tolerance vary in size, domestic and international existing hydrogen sulfide gas removing sulfuldioxide and technique are a lot, such as: low tower jet regeneration technology, compare with the method for the present invention, under identical function and effect, power consumption is more, and this method saves electricity more than 40%；High tower regeneration technology, compares with this method, and under identical function and effect, investment increases by more than 20%, many power consumptions, this techniques save electricity more than 20%；Integral type desulfurization regeneration technology, compares with this method, and under identical function and effect, investment increases by more than 30%, many power consumptions, and operational management difficulty is big, and this method saves electricity more than 20%；U.S.'s LO-CAT technology, device structure complexity, great number technology transfer fee and catalyst usage charges, armamentarium material is S30408, and investment is relatively big, uses face narrow, inapplicable existing domestic Large-scale Ammonia Plant, methanol feedstock gas and coke-stove gas, biogas desulfurization technique.
Separately having a kind of application number is that CN201410264986.3 name is called that the Chinese invention patent of " recovery process of a kind of hydrogen sulfide gas " discloses the recovery process of a kind of hydrogen sulfide gas.The hydrogen sulfide gas produced in chemical producing system is connected by pipeline and sends into hydrogen sulphide disposal unit, when hydrogen sulphide disposal unit stops, cut off hydrogen sulfide and enter the pipeline of described process device, the production system producing hydrogen sulfide is stopped, hydrogen sulfide gas remaining in production system connects entrance hydrogen sulfide gas holder by pipeline, when gas holder pressure reaches with production equipment system pressure balance, by hydrogen sulfide compressor by the hydrogen sulfide gas suction hydrogen sulfide gas holder in production system, until system and device gauge pressure is zero；When hydrogen sulphide disposal unit is driven, by hydrogen sulfide compressor, the hydrogen sulfide in gas holder is sent into hydrogen sulphide disposal unit and process.The recovery process of this invention is not externally discharged or burns hydrogen sulfide gas, and in industrial processes, noxious gas emission is zero, opens in docking process without raw material losses.
But, this invention also has equipment many, and structure is complicated, and the problem that energy consumption is bigger, therefore, it is necessary to improve further the method.
Summary of the invention
The technical problem to be solved is to provide for above-mentioned prior art present situation to remove hydrogen sulfide gas the method regenerating sulfur in a kind of raw material of industry gas, has energy consumption low, invests little, save cost, uses the simple advantage of device structure.
This invention address that the technical scheme that above-mentioned technical problem adopts is: this raw material of industry gas removes hydrogen sulfide the method that can reclaim sulfur, it is characterised in that；By following steps: pending pressure be 3Kpa～200pa, temperature less than 60 DEG C containing H2S、COS、CS2nullRaw material of industry gas enter in the middle part of desulfurizing tower，Counter current contacting is carried out with the raw material of industry gas flowed from bottom to top from desulfurizing tower inner chamber by entering into the alkaline solution in desulfurizing tower inner chamber from desulfurizing tower top or top，Sulphur-containing substance in alkaline solution absorption raw material of industry gas，The gas being predominantly absorbed sulphur-containing substance flows out from the flow export on desulfurizing tower top or top，The liquid that absorbs absorbing sulphur-containing substance is flowed in the inner chamber of A sulfur regeneration device respectively through pipeline，It is flowed under the absorption liquid desulphurization catalyst effect in sulfur regeneration device in each sulfur regeneration device and the air or oxygen hybrid reaction in sulfur regeneration device，Making the convert sulfur compounds in absorption liquid is that elemental sulfur precipitates out，Precipitation solution after precipitation elemental sulfur is delivered in alkaline solution containing cavity by pipeline and is mixed to form alkaline mixed solution with alkaline solution，Described alkaline mixed solution is transported in the desulfurizing tower inner chamber on desulfurizing tower top or top by delivery pump and the raw material of industry gas that flows from bottom to top in desulfurizing tower inner chamber proceeds counter current contacting and absorbs sulphur-containing substance，Repetitive cycling said process，Namely complete whole raw material of industry gas removes hydrogen sulfide and the step of sulfur can be reclaimed，Described A be not zero natural number.
As improvement, described in absorb absorbing liquid and can automatically flowing in A the inner chamber of corresponding sulfur regeneration device that can precipitate out elemental sulfur respectively through pipeline preferably by liquid level difference of sulphur-containing substance.
Improve further, the absorption liquid absorbing sulphur-containing substance is flowed in absorption liquid containing cavity, the position of described absorption liquid containing cavity, higher than the top of A sulfur regeneration device, absorbs absorbing in the inner chamber that liquid automatically flows into corresponding sulfur regeneration device by respective pipeline in liquid containing cavity.
nullImprove further，Described method，The apparatus structure adopted includes the desulfurizing tower that can remove hydrogen sulfide、A sulfur regeneration device of elemental sulfur can be precipitated out，Described desulfurizing tower includes housing、It is positioned at the gas-liquid mixed absorbed layer on housing cavity top、It is positioned at the described absorption liquid containing cavity in the middle part of housing cavity、It is positioned at the described alkaline solution containing cavity of housing cavity bottom，Described absorption liquid containing cavity does not connect mutually with alkaline solution containing cavity，The position of described absorption liquid containing cavity is higher than the top of A sulfur regeneration device，Described absorption liquid containing cavity is provided with the entrance connected with pending raw material of industry gas phase，Solution after gas-liquid mixed absorbed layer absorbs can be flowed into directly or by pipeline in absorption liquid containing cavity，Described absorption liquid containing cavity be connected with the corresponding top of sulfur regeneration device or the entrance on top respectively through respective pipeline and with A sulfur regeneration device intracavity inter-connection，The solution that precipitates out precipitating out elemental sulfur is connected with the alkaline solution containing cavity of desulfurizing tower lower housing portion by each sulfur regeneration device by pipeline，The outlet of described alkaline solution containing cavity can be connected with the housing cavity entrance being positioned at above gas-liquid mixed absorbed layer through delivery pump preferably by pipeline，The flow export of the raw material of industry gas removing hydrogen sulfide it is provided with in case top.
Improving further, described gas-liquid mixed absorbed layer is by multilamellar between the upper and lower every being arranged in housing cavity, and bottom is connected with absorbing liquid containing cavity.
Improving further, described multilamellar is the upper, middle and lower up of three layers.
As improvement, described sulfur regeneration device is self-suction gas-liquid regenerator, self-suction gas-liquid regenerator relies on air hybrid reaction in self-suction gas-liquid regenerator of self-priming, under the oxidant effect as desulphurization catalyst, HS in solution is made to be converted into elemental sulfur, described elemental sulfur precipitates out from sulfur regeneration device, precipitates out the liquid that absorbs after elemental sulfur and is converted into the precipitation solution that sulfur-bearing is few.
As improvement, described alkaline solution is: NH4OH、Na2CO3, NaOH or KOH.
As improvement, described containing H2S、COS、CS2Raw material of industry gas be: synthesis ammonia, methanol feedstock gas, industrial waste gas, biogas, natural gas, coke-stove gas, Calus tail gas, low-temperature methanol washing tail-gas.
Improve further, possibly together with H in described raw material of industry gas2、N2、CO、CO2、CH4、CnHm、O2, one or more in HCN, described CnHmIn n be not zero natural number, described CnHmIn m be greater than 1 natural number, and m is more than or equal to n.
Compared with prior art, it is an advantage of the current invention that: by desulfurizing tower, sulfur regeneration device is combined as circulating device, realize elimination hydrogen sulfide and reclaim the function of elemental sulfur, and owing to being circular treatment raw material of industry gas, not only increase the removal efficiency of hydrogen sulfide in raw material of industry gas, and elemental sulfur reclaims also higher；Secondly, adopt circulation alkaline mixed solution to absorb the hydrogen sulfide in raw material of industry gas further, greatly reduce the consumption rate of alkaline solution, be effectively reduced the use cost of alkaline solution；Sulfur regeneration device is also had to have multiple, it is thus possible to be effectively improved the response rate of sulfur；And the device structure that the method for the present invention adopts is simple, and floor space is little, easy to use；Further, sulfur regeneration device utilizes liquid level poor, it is achieved the application effect of unpowered generation elemental sulfur, energy consumption is greatly reduced, cost savings production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation adopting device in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
As it is shown in figure 1, the raw material of industry gas of the present embodiment removes hydrogen sulfide the method that can reclaim sulfur, by following steps: pending pressure be 3Kpa～200pa, temperature less than 60 DEG C containing H2S、COS、CS2nullRaw material of industry gas enter in the middle part of desulfurizing tower 1，Counter current contacting is carried out with the raw material of industry gas flowed from bottom to top from desulfurizing tower 1 inner chamber by entering into the alkaline solution in desulfurizing tower 1 inner chamber from desulfurizing tower 1 top or top，Sulphur-containing substance in alkaline solution absorption raw material of industry gas，The gas being predominantly absorbed sulphur-containing substance flows out from the flow export on desulfurizing tower 1 top or top，The liquid that absorbs absorbing sulphur-containing substance is flowed in the inner chamber of A sulfur regeneration device 2 respectively through pipeline，It is flowed under the absorption liquid desulphurization catalyst effect in sulfur regeneration device 2 in each sulfur regeneration device 2 and the air or oxygen hybrid reaction in sulfur regeneration device 2，Making the convert sulfur compounds in absorption liquid is that elemental sulfur precipitates out，Precipitation solution after precipitation elemental sulfur is delivered in alkaline solution containing cavity 11 by pipeline and is mixed to form alkaline mixed solution with alkaline solution，Described alkaline mixed solution is transported in desulfurizing tower 1 inner chamber on desulfurizing tower 1 top or top by delivery pump 3 and the raw material of industry gas that flows from bottom to top in desulfurizing tower 1 inner chamber proceeds counter current contacting and absorbs sulphur-containing substance，Repetitive cycling said process，Namely complete whole raw material of industry gas removes hydrogen sulfide and the step of sulfur can be reclaimed，Described A be not zero natural number.The described liquid that absorbs absorbing sulphur-containing substance is automatically flowed in A the inner chamber of corresponding sulfur regeneration device 2 that can precipitate out elemental sulfur respectively through pipeline by liquid level difference.The absorption liquid absorbing sulphur-containing substance is flowed in absorption liquid containing cavity 12, the position of described absorption liquid containing cavity 12, higher than the top of A sulfur regeneration device 2, absorbs absorbing in the inner chamber that liquid automatically flows into corresponding sulfur regeneration device 2 by respective pipeline in liquid containing cavity 12.nullDescribed method，The apparatus structure adopted includes the desulfurizing tower 1 that can remove hydrogen sulfide、A sulfur regeneration device 2 of elemental sulfur can be precipitated out，Described desulfurizing tower 1 includes housing、It is positioned at the gas-liquid mixed absorbed layer 13 on housing cavity top、It is positioned at the described absorption liquid containing cavity 12 in the middle part of housing cavity、It is positioned at the described alkaline solution containing cavity 11 of housing cavity bottom，Described absorption liquid containing cavity 12 does not connect mutually with alkaline solution containing cavity 11，The position of described absorption liquid containing cavity 12 is higher than the top of A sulfur regeneration device 2，Described absorption liquid containing cavity 12 is provided with the entrance connected with pending raw material of industry gas phase，Solution after gas-liquid mixed absorbed layer 13 absorbs can be flowed into directly or by pipeline in absorption liquid containing cavity 12，Described absorption liquid containing cavity 12 be connected with the corresponding top of sulfur regeneration device 2 or the entrance on top respectively through respective pipeline and with A sulfur regeneration device 2 intracavity inter-connection，The solution that precipitates out precipitating out elemental sulfur is connected with the alkaline solution containing cavity 11 of desulfurizing tower 1 lower housing portion by each sulfur regeneration device 2 by pipeline，The outlet of described alkaline solution containing cavity 11 is connected with the housing cavity entrance being positioned at above gas-liquid mixed absorbed layer 13 through delivery pump 3 by pipeline，The flow export of the raw material of industry gas removing hydrogen sulfide it is provided with in case top.Described gas-liquid mixed absorbed layer 13 is by multilamellar between the upper and lower every being arranged in housing cavity, and bottom is connected with absorbing liquid containing cavity 12.Described multilamellar is the upper, middle and lower up of three layers.Described sulfur regeneration device 2 is self-suction gas-liquid regenerator, self-suction gas-liquid regenerator relies on air hybrid reaction in self-suction gas-liquid regenerator of self-priming, under the oxidant effect as desulphurization catalyst, HS in solution is made to be converted into elemental sulfur, described elemental sulfur precipitates out from sulfur regeneration device, precipitates out the liquid that absorbs after elemental sulfur and is converted into the precipitation solution that sulfur-bearing is few.Described alkaline solution is: NH4OH、Na2CO3, NaOH or KOH.Described containing H2S、COS、CS2Raw material of industry gas be: synthesis ammonia, methanol feedstock gas, industrial waste gas, biogas, natural gas, coke-stove gas, Calus tail gas, low-temperature methanol washing tail-gas.Possibly together with H in described raw material of industry gas2、N2、CO、CO2、CH4、CnHm、O2, one or more in HCN, described CnHmIn n be not zero natural number, described CnHmIn m be greater than 1 natural number, and m is more than or equal to n.Desulphurization catalyst is conventional oxidisability desulphurization catalyst.Described Calus tail gas and low-temperature methanol washing tail-gas are all this technology neck known tail gas of technical staff, pardon and are not described further in detail.
Claims (10)
1. a raw material of industry gas removes hydrogen sulfide the method that can reclaim sulfur, it is characterised in that: by following steps: pending pressure be 3Kpa～200pa, temperature less than 60 DEG C containing H2S、COS、CS2nullRaw material of industry gas enter desulfurizing tower (1) middle part，Counter current contacting is carried out with the raw material of industry gas flowed from bottom to top from desulfurizing tower (1) inner chamber by entering into the alkaline solution in desulfurizing tower (1) inner chamber from desulfurizing tower (1) top or top，Sulphur-containing substance in alkaline solution absorption raw material of industry gas，The gas being predominantly absorbed sulphur-containing substance flows out from the flow export on desulfurizing tower (1) top or top，The absorption liquid absorbing sulphur-containing substance is flowed in the inner chamber of A sulfur regeneration device (2) respectively through pipeline，It is flowed under the desulphurization catalyst effect in sulfur regeneration device (2) of the absorption liquid in each sulfur regeneration device (2) and the air or oxygen hybrid reaction in sulfur regeneration device (2)，Making the convert sulfur compounds in absorption liquid is that elemental sulfur precipitates out，Precipitation solution after precipitation elemental sulfur is delivered in alkaline solution containing cavity (11) by pipeline and is mixed to form alkaline mixed solution with alkaline solution，Described alkaline mixed solution is transported in desulfurizing tower (1) inner chamber on desulfurizing tower (1) top or top by delivery pump (3) and the raw material of industry gas that flows from bottom to top in desulfurizing tower (1) inner chamber proceeds counter current contacting and absorbs sulphur-containing substance，Repetitive cycling said process，Namely complete whole raw material of industry gas removes hydrogen sulfide and the step of sulfur can be reclaimed，Described A be not zero natural number.
2. method according to claim 1, it is characterised in that: described in absorb the liquid that absorbs of sulphur-containing substance and automatically flowed in the individual inner chamber of corresponding sulfur regeneration device (2) that can precipitate out elemental sulfur of A respectively through pipeline by liquid level difference.
3. method according to claim 2, it is characterized in that: the absorption liquid absorbing sulphur-containing substance is flowed in absorption liquid containing cavity (12), the position of described absorption liquid containing cavity (12), higher than the top of A sulfur regeneration device (2), absorbs in the inner chamber that the absorption liquid in liquid containing cavity (12) automatically flows into corresponding sulfur regeneration device (2) by respective pipeline.
null4. method according to claim 3，It is characterized in that: described method，The apparatus structure adopted includes the desulfurizing tower (1) that can remove hydrogen sulfide、A sulfur regeneration device (2) of elemental sulfur can be precipitated out，Described desulfurizing tower (1) includes housing、It is positioned at the gas-liquid mixed absorbed layer (13) on housing cavity top、It is positioned at described absorption liquid containing cavity (12) in the middle part of housing cavity、It is positioned at the described alkaline solution containing cavity (11) of housing cavity bottom，Described absorption liquid containing cavity (12) does not connect mutually with alkaline solution containing cavity (11)，The position of described absorption liquid containing cavity (12) is higher than the top of A sulfur regeneration device (2)，Described absorption liquid containing cavity (12) is provided with the entrance connected with pending raw material of industry gas phase，Solution after gas-liquid mixed absorbed layer (13) absorbs can be flowed into directly or by pipeline in absorption liquid containing cavity (12)，Described absorption liquid containing cavity (12) be connected with the corresponding top of sulfur regeneration device (2) or the entrance on top respectively through respective pipeline and with A sulfur regeneration device (2) intracavity inter-connection，The precipitation solution precipitating out elemental sulfur is connected with the alkaline solution containing cavity (11) of desulfurizing tower (1) lower housing portion by each sulfur regeneration device (2) by pipeline，The outlet of described alkaline solution containing cavity (11) is connected with the housing cavity entrance being positioned at gas-liquid mixed absorbed layer (13) top through delivery pump (3) by pipeline，The flow export of the raw material of industry gas removing hydrogen sulfide it is provided with in case top.
5. method according to claim 4, it is characterised in that: described gas-liquid mixed absorbed layer (13) is by multilamellar between the upper and lower every being arranged in housing cavity, and bottom is connected with absorbing liquid containing cavity (12).
6. method according to claim 5, it is characterised in that: described multilamellar is the upper, middle and lower up of three layers.
7. according to described method arbitrary in claim 1 to 6, it is characterized in that: described sulfur regeneration device (2) is self-suction gas-liquid regenerator, self-suction gas-liquid regenerator relies on air hybrid reaction in self-suction gas-liquid regenerator of self-priming, under the oxidant effect as desulphurization catalyst, make HS in solution-Being converted into elemental sulfur, described elemental sulfur precipitates out from sulfur regeneration device, precipitates out the liquid that absorbs after elemental sulfur and is converted into the precipitation solution that sulfur-bearing is few.
8. according to described method arbitrary in claim 1 to 6, it is characterised in that: described alkaline solution is: NH4OH、Na2CO3, NaOH or KOH.
9. according to described method arbitrary in claim 1 to 6, it is characterised in that: described containing H2S、COS、CS2Raw material of industry gas be: synthesis ammonia, methanol feedstock gas, industrial waste gas, biogas, natural gas, coke-stove gas, Calus tail gas, low-temperature methanol washing tail-gas.
10. method according to claim 9, it is characterised in that: possibly together with H in described raw material of industry gas2、N2、CO、CO2、CH4、CnHm、O2, one or more in HCN, described CnHmIn n be not zero natural number, described CnHmIn m be greater than 1 natural number, and m is more than or equal to n.
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| CN109663466A (en) * | 2019-01-15 | 2019-04-23 | 山东京博石油化工有限公司 | A kind of hydrogen sulfide alkaline cleaner and method for mixed alkanes dehydrogenation unit |
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Application publication date: 20160720 |