CN105883851A - Novel gasification and pyrolysis coupling gas poly-generation process - Google Patents
Novel gasification and pyrolysis coupling gas poly-generation process Download PDFInfo
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- CN105883851A CN105883851A CN201610212127.9A CN201610212127A CN105883851A CN 105883851 A CN105883851 A CN 105883851A CN 201610212127 A CN201610212127 A CN 201610212127A CN 105883851 A CN105883851 A CN 105883851A
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- 239000007789 gas Substances 0.000 claims abstract description 110
- 238000002309 gasification Methods 0.000 claims abstract description 59
- 238000000197 pyrolysis Methods 0.000 claims abstract description 47
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 40
- 230000023556 desulfurization Effects 0.000 claims abstract description 40
- 239000001257 hydrogen Substances 0.000 claims abstract description 36
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 36
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 28
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 238000005262 decarbonization Methods 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 239000003034 coal gas Substances 0.000 claims description 27
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Natural products O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- 238000005261 decarburization Methods 0.000 claims description 19
- 238000005516 engineering process Methods 0.000 claims description 19
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000571 coke Substances 0.000 claims description 13
- 230000002194 synthesizing effect Effects 0.000 claims description 12
- 239000003245 coal Substances 0.000 claims description 11
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052717 sulfur Inorganic materials 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000005915 ammonolysis reaction Methods 0.000 claims description 3
- 238000004939 coking Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 claims description 2
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 claims description 2
- 206010030113 Oedema Diseases 0.000 claims description 2
- 238000011982 device technology Methods 0.000 claims description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 2
- 208000035475 disorder Diseases 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910001868 water Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000007036 catalytic synthesis reaction Methods 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 1
- 238000002336 sorption--desorption measurement Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 6
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000001193 catalytic steam reforming Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0488—Processes integrated with preparations of other compounds, e.g. methanol, urea or with processes for power generation
-
- 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
-
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
- C07C29/1516—Multisteps
- C07C29/1518—Multisteps one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis
-
- 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
- C10L3/08—Production of synthetic natural gas
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Industrial Gases (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The invention relates to a novel gasification and pyrolysis coupling gas poly-generation process. According to the process, rough gas produced by a gasification furnace passes through a waste heat boiler and a gasified gas purifying device, one part of gas serves as pyrolysis return-to-furnace gas, and the other part of gas passes through a desulfurization device to serve as synthesis gas; pyrolysis crude gas passes through a pyrolyzed gas purifying device to be divided into two parts, the two parts pass through a desulfurization and decarbonization device to be subjected to desulfurization and desulfurization decarbonization, the desulfurization part serves as return-to-furnace gas of a pyrolyzing furnace, the desulfurization decarbonization part enters a cold box, and methane is separated to obtain an LNG/CNG product; one part of residual gas rich in hydrogen and carbon monoxide is subjected to pressure swing adsorption for hydrogen extraction, hydrogen enters a compressor to be mixed with nitrogen coming from air to enter the compressor, then the mixture enters a synthesis ammonia catalytic synthesis device, a synthesis ammonia product is obtained, pressure swing adsorption desorption gas is mixed with the other part of residual gas rich in hydrogen and carbon monoxide and the gasified synthesis gas, the mixture enters the compressor, and CNG/alcohol/ether and other products can be synthesized through the catalytic synthesis device. The novel gasification and pyrolysis coupling gas poly-generation process for reasonably utilizing pyrolysis high-quality gas to the maximum extent is provided.
Description
Technical field
The present invention relates to Novel gasification and the pyrolysis coupling coal gas multi-production process of the product such as a kind of coke-stove gas and the coupling of pure oxygen gasification coal gas preparing synthetic gas production alcohol, ether and LNG/CNG altogether.
Background technology
In coal gas multi-production process: the method that a class is is raw material pyrolytic gas making with coal, produce downstream product preparing synthesis gas through catforming again after the first purified device process of pyrolysis coal gas；Another kind of be gasification gas making with coal, semi-coke or coke as raw material put method, gasification gas after first purified device processes the most transformed device prepare synthesis gas and produce downstream product.
Pyrolysis coal gas is as a example by coke-stove gas, and it is mainly composed of: CH422 ~ 28%, H255~60
%, CO5 ~ 8%, CO2~ 4%, caloric value about 4000kcal/m3, it is not only due to the fuel gas that it is high-quality rich in methane, is more valuable chemical industry synthesis material due to its hydrogen content height.At present, with in preparing synthesis gas from coke oven gas Poly-generation, the main preparing synthetic gas method used has: catalytic steam reforming, catalyzing part oxidation and non-catalytic partial oxidation method；And present in these methods there be problem: 1. use catalyst, 2. consuming amount of heat, 3. in product, hydrogen-carbon ratio is higher, and containing a large amount of hydrogen in off-gas, and discharge capacity is big, and hydrogen resources utilizes not reasonable.
Therefore, the most scientifically and rationally oven gas is carried out composition segmentation and utilizes, be coking industry problem demanding prompt solution.
Gasification gas is with coke as raw material, and as a example by using pure oxygen fixed bed continuous gasification gas, its main component is CH4~ 1.27%, H2~ 44.35%, CO ~ 35.73%, CO2~ 19.3%, caloric value 2300 ~ 2600kcal/m3Owing to its carbon monoxide and hydrogen components content height are good raw material of synthetic gas gas, but owing in gasification product gas, carbon monoxide is higher with hydrogen ratio, during synthesis downstream product, need to be changed into transformed for part carbon monoxide reaction CO2 emission in air, optimizing C/Hratio, this process causes the waste of carbon resource.
Thus, in conjunction with pyrolysis coal gas advantage and gasification gas advantage, coal gas carries out overall segmentation utilize, the high energy consumption of pyrolysis coal gas catalytic conversion unit and the difficult problem that product gas hydrogen-carbon ratio is high can be avoided, and the carbon resource that in gasification gas, converter unit causes can be avoided to discharge a difficult problem for waste, it is the effective way realizing hydrocarbon comprehensive utilization of resources.
Summary of the invention
It is an object of the invention to overcome two kinds of independent pathways in above-mentioned prior art to prepare the irrational problem of the hydrocarbon utilization of resources during synthesis gas produces downstream product and a kind of Novel gasification realizing pyrolysis high-quality coal gas Appropriate application to greatest extent and pyrolysis coupling coal gas multi-production process are provided.
The technical scheme is that and be achieved in that: a kind of Novel gasification and pyrolysis coupling coal gas multi-production process, the raw gas that this technique produces with gasification furnace is as raw material, respectively after waste heat boiler, gasification gas purifier and gasification gas desulfurizer, a part melts down gas use as pyrolysis, and another part is used as synthesis gas；Pyrolysis raw coke oven gas is after pyrolyzing coal air purifying apparatus, divide two stocks not through desulfurization and decarburization device desulfurization and desulfurization and decarburization, one after desulfurization melts down gas use as pyrolysis oven, and the pyrolysis gas after another strand of desulfurization and decarburization enters ice chest device separation of methane and obtains LNG/CNG product；Residue hydrogen-rich and rich two strands of pyrolysis gas of carbon monoxide, wherein hydrogen-rich pyrolysis gas divides two strands, and after a stock-traders' know-how pressure-variable adsorption carries hydrogen, hydrogen enters compressor and converges with the nitrogen from space division, catalyzes and synthesizes device subsequently into synthesis ammonia and obtains synthesizing ammonolysis product；Utilization of PSA Relief Gas body converges with another strand of hydrogen-rich gas and the rich CO (carbon monoxide converter) gas of residue and the above synthesis gas deriving from gasification respectively, enters compressor in the lump, then through catalyzing and synthesizing device synthesis CNG, alcohol or ether product；Periodic off-gases after catalyzing and synthesizing is after pressure-variable adsorption carries hydrogen, and hydrogen is used for entering synthesis ammonia compressor for synthesizing ammonia, and residual gas recycles.
Described gasification furnace is mainly pure oxygen fixed bed gasification, and other gasification technology is equally applicable, and raw materials used mainly have raw coal, semi-coke and coke, and gasification oxidant used mainly has pure oxygen, carbon dioxide and water vapour；Described pyrolysis installation is mainly coke oven；Described gasification gas is mainly composed of: CH4~ 1.9%, H2~ 41%, CO ~ 37%, CO2~18%；Pyrolysis coal gas is mainly composed of: CH422 ~ 28%, H255~60
%, CO5 ~ 8%, CO2~4%。
Pyrolyzing coal desulfurization decarbonization device technology predominantly low-temp methanol washes technology, and other activative MDEA technology and NHD technology are equally applicable；Wherein, pyrolyzing coal edema caused by disorder of QI two strands respectively enters desulfurization and decarburization device, and wherein firing tunnel in coking furnace only carries out desulfurization, and another stock carries out desulfurization and decarburization, and the carbon dioxide of abjection enters after gas blending tank mixes with the pure oxygen from space division and enters back into gasification furnace, produces carbon monoxide；Gasification gas desulfurizer technology mainly has wet desulphurization and dry desulfurization, and low-temp methanol is washed etc. and to be equally applicable；The sulfur of gasificating desulfurization device and the abjection of desulfurization and decarburization device enters sulfur recovery unit and is used for producing sulfur or sulfuric acid product.
Partial gasification coal gas replaces partial thermal decomposition coal gas and melts down heating use for pyrolysis installation, and its mixed gas calorific value is not less than 3000kcal/m3。
Described catalytic synthetic techniques mainly has methane synthetic technology, methanol synthesis technology, synthetic technology of ethylene glycol and Dimethyl Ether Synthesis Technology.
The good effect that technical scheme produces is as follows: 1. replaces partial thermal decomposition gas-fired with more inferior gasification gas, realizes the Appropriate application of pyrolysis high-quality coal gas to greatest extent；2. the pyrolysis coal gas after purifying isolates methane gas through desulfurization and decarburization device and ice chest device successively, hydrogen rich gas gas and rich CO (carbon monoxide converter) gas, methane gas is used for producing LNG/CNG, hydrogen rich gas gas divides two strands, after one stock-traders' know-how pressure-variable adsorption carries hydrogen, hydrogen synthesizes ammonia etc. for producing, remaining stripping gas respectively with another strand of hydrogen rich gas gas and rich carbon monoxide gas and purification after gasification gas converge, it is used for the most after compression producing downstream product, not only take full advantage of the methane gas being pyrolyzed wherein high-quality, the most fully combine the advantage of pyrolysis gas hydrogen-rich gentle activating QI richness carbon；3. the carbon dioxide of desulfurization and decarburization device abjection gasifies for gasification furnace as gasification oxidant, it is to avoid carbon emission.
Accompanying drawing explanation
Fig. 1 is the process chart of Novel gasification of the present invention and pyrolysis coupling coal gas multi-production process.
Detailed description of the invention
The present invention combines drawings and Examples and can be further detailed the present invention.
A kind of Novel gasification and pyrolysis coupling coal gas multi-production process, as shown in Figure 1, with burnt 1,300,000 tons/year of production metallurgy, coke-stove gas about 6 ten thousand stere/hour, pure oxygen fixed bed gasification equipment production gasification gas 3.2 ten thousand stere/hour, methanol about 100,000 tons/year, synthesizes ammonia about 50,000 tons/year, realizes as a example by the enterprise of LNG7 ~ 80,000 ton/year.
The implementation of the present invention is raw gas 3.2 ten thousand stere/hour respectively after waste heat boiler, gasification gas purifier and gasification gas desulfurizer produced by gasification furnace, a part about 2.2 ten thousand stere/hour as pyrolysis melt down gas use, another part about 1 ten thousand stere/and hour after desulfurizer, use as synthesis gas；nullPyrolysis raw coke oven gas about 6 ten thousand stere/hour after pyrolyzing coal air purifying apparatus，Divide two stocks not after desulfurization and decarburization device desulfurization and desulfurization and decarburization，One about 1 ten thousand stere after desulfurization/hour as pyrolysis oven melt down gas use，Pyrolysis gas about 4.7 ten thousand stere after another strand about 5 ten thousand stere/hour desulfurization and decarburization/hour entrance ice chest device，Separation of methane obtains 9.05 ton hour LNG/CNG products，Residue hydrogen-rich 3.2 ten thousand stere/hour and rich carbon monoxide 0.3 ten thousand stere/hour two strands of pyrolysis gas，Wherein hydrogen-rich pyrolysis gas divides two strands，One about 1.3 ten thousand stere/hour after pressure-variable adsorption carries hydrogen，Hydrogen about 1 ten thousand stere/hour entrance compressor converges entrance compressor with the nitrogen from space division，Catalyze and synthesize device subsequently into synthesis ammonia to obtain synthesizing ammonolysis product，Utilization of PSA Relief Gas body 0.3 ten thousand stere/hour respectively and another strand 1.9 ten thousand stere/hour hydrogen-rich gas and residue 0.3 ten thousand stere/hour rich CO (carbon monoxide converter) gas and the above about 1 ten thousand stere/hour synthesis gas deriving from gasification converge，Enter compressor in the lump，Then the methanol product of about 12.58 ton hour can be synthesized through catalyzing and synthesizing device；About 0.78 ten thousand stere/hour periodic off-gases after catalyzing and synthesizing is after pressure-variable adsorption carries hydrogen, and hydrogen about 0.3 ten thousand stere/hour be used for enters synthesis ammonia compressor for synthesizing ammonia, and residual gas recycles.Wherein, desulfurization and decarburization device abjection carbon dioxide about 0.17 ten thousand stere/hour with from space division pure oxygen 0.7 ten thousand stere/hour enter a blending tank mix after entrance gasification installation；The sulfur of gasificating desulfurization device and the abjection of desulfurization and decarburization device enters sulfur recovery unit and can be used for producing sulfur or sulphuric acid 1.48 ton hour product.
According to above-mentioned implementation, gasification gas composition H2~ 41%, CO ~ 37%, CH4~ 1.9%, CO2~18%；Coke-stove gas composition H2~ 57%, CO ~ 8.5%, CH4~ 22%, CO2~ 3.7%, CnHm ~ 2%.
Claims (5)
1. a Novel gasification and pyrolysis coupling coal gas multi-production process, it is characterized in that: the raw gas that this technique produces with gasification furnace is as raw material, respectively after waste heat boiler, gasification gas purifier and gasification gas desulfurizer, a part melts down gas use as pyrolysis, and another part is used as synthesis gas；Pyrolysis raw coke oven gas is after pyrolyzing coal air purifying apparatus, divide two stocks not through desulfurization and decarburization device desulfurization and desulfurization and decarburization, one after desulfurization melts down gas use as pyrolysis oven, and the pyrolysis gas after another strand of desulfurization and decarburization enters ice chest device separation of methane and obtains LNG/CNG product；Residue hydrogen-rich and rich two strands of pyrolysis gas of carbon monoxide, wherein hydrogen-rich pyrolysis gas divides two strands, and after a stock-traders' know-how pressure-variable adsorption carries hydrogen, hydrogen enters compressor and converges with the nitrogen from space division, catalyzes and synthesizes device subsequently into synthesis ammonia and obtains synthesizing ammonolysis product；Utilization of PSA Relief Gas body converges with another strand of hydrogen-rich gas and the rich CO (carbon monoxide converter) gas of residue and the above synthesis gas deriving from gasification respectively, enters compressor in the lump, then through catalyzing and synthesizing device synthesis CNG, alcohol or ether product；Periodic off-gases after catalyzing and synthesizing is after pressure-variable adsorption carries hydrogen, and hydrogen is used for entering synthesis ammonia compressor for synthesizing ammonia, and residual gas recycles.
A kind of Novel gasification the most according to claim 1 and pyrolysis coupling coal gas multi-production process, it is characterized in that: described gasification furnace is mainly pure oxygen fixed bed gasification, other gasification technology is equally applicable, raw materials used mainly have raw coal, semi-coke and coke, and gasification oxidant used mainly has pure oxygen, carbon dioxide and water vapour；Described pyrolysis installation is mainly coke oven；Described gasification gas is mainly composed of: CH4~ 1.9%, H2~ 41%, CO ~ 37%, CO2~18%；Pyrolysis coal gas is mainly composed of: CH422 ~ 28%, H255 ~ 60 %, CO5 ~ 8%, CO2~4%。
A kind of Novel gasification the most according to claim 1 and pyrolysis coupling coal gas multi-production process, it is characterised in that: pyrolyzing coal desulfurization decarbonization device technology predominantly low-temp methanol washes technology, and other activative MDEA technology and NHD technology are equally applicable；Wherein, pyrolyzing coal edema caused by disorder of QI two strands respectively enters desulfurization and decarburization device, and wherein firing tunnel in coking furnace only carries out desulfurization, and another stock carries out desulfurization and decarburization, and the carbon dioxide of abjection enters after gas blending tank mixes with the pure oxygen from space division and enters back into gasification furnace, produces carbon monoxide；Gasification gas desulfurizer technology mainly has wet desulphurization and dry desulfurization, and low-temp methanol is washed etc. and to be equally applicable；The sulfur of gasificating desulfurization device and the abjection of desulfurization and decarburization device enters sulfur recovery unit and is used for producing sulfur or sulfuric acid product.
A kind of Novel gasification the most according to claim 1 and pyrolysis coupling coal gas multi-production process, it is characterised in that: partial gasification coal gas replacement partial thermal decomposition coal gas melts down heating for pyrolysis installation and uses, and its mixed gas calorific value is not less than 3000kcal/m3。
A kind of Novel gasification the most according to claim 1 and pyrolysis coupling coal gas multi-production process, it is characterised in that: described catalytic synthetic techniques mainly has methane synthetic technology, methanol synthesis technology, synthetic technology of ethylene glycol and Dimethyl Ether Synthesis Technology.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986747A (en) * | 2017-04-19 | 2017-07-28 | 中美新能源技术研发（山西）有限公司 | A kind of natural gas pyrolysis fine coal and methanol integral process processed |
| CN107043089A (en) * | 2017-05-19 | 2017-08-15 | 福州大学化肥催化剂国家工程研究中心 | A kind of isobaric technique of the ammonia synthesis co-production containing carbon chemicals |
| CN113956905A (en) * | 2020-06-29 | 2022-01-21 | 杨皓 | Improved process for preparing ammonia and CNG from coke oven gas |
| CN116177564A (en) * | 2022-12-08 | 2023-05-30 | 金能科技股份有限公司 | Method for preparing methanol and co-producing synthetic ammonia and extracting ammonia from coke oven gas |
| CN116477572A (en) * | 2023-03-30 | 2023-07-25 | 陕西鼓风机（集团）有限公司 | System for preparing synthesis gas based on coal chemical coupling coking and renewable energy sources |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160296A (en) * | 2013-03-29 | 2013-06-19 | 陕西煤业化工技术研究院有限责任公司 | Pyrolysis gasification coupling integrated poly-generation system and process for coal chemical industry |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160296A (en) * | 2013-03-29 | 2013-06-19 | 陕西煤业化工技术研究院有限责任公司 | Pyrolysis gasification coupling integrated poly-generation system and process for coal chemical industry |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986747A (en) * | 2017-04-19 | 2017-07-28 | 中美新能源技术研发（山西）有限公司 | A kind of natural gas pyrolysis fine coal and methanol integral process processed |
| CN107043089A (en) * | 2017-05-19 | 2017-08-15 | 福州大学化肥催化剂国家工程研究中心 | A kind of isobaric technique of the ammonia synthesis co-production containing carbon chemicals |
| CN113956905A (en) * | 2020-06-29 | 2022-01-21 | 杨皓 | Improved process for preparing ammonia and CNG from coke oven gas |
| CN116177564A (en) * | 2022-12-08 | 2023-05-30 | 金能科技股份有限公司 | Method for preparing methanol and co-producing synthetic ammonia and extracting ammonia from coke oven gas |
| CN116477572A (en) * | 2023-03-30 | 2023-07-25 | 陕西鼓风机（集团）有限公司 | System for preparing synthesis gas based on coal chemical coupling coking and renewable energy sources |
| CN116477572B (en) * | 2023-03-30 | 2024-11-19 | 陕西鼓风机（集团）有限公司 | System for preparing synthesis gas based on coal chemical coupling coking and renewable energy sources |
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