WO1993010069A1 - Process for producing dimethyl ether - Google Patents
Process for producing dimethyl ether Download PDFInfo
- Publication number
- WO1993010069A1 WO1993010069A1 PCT/JP1992/001467 JP9201467W WO9310069A1 WO 1993010069 A1 WO1993010069 A1 WO 1993010069A1 JP 9201467 W JP9201467 W JP 9201467W WO 9310069 A1 WO9310069 A1 WO 9310069A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- oxide
- dimethyl ether
- hydrogen
- carbon monoxide
- Prior art date
Links
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003054 catalyst Substances 0.000 claims abstract description 137
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 35
- 239000001257 hydrogen Substances 0.000 claims abstract description 35
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 229910000431 copper oxide Inorganic materials 0.000 claims abstract description 20
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000005751 Copper oxide Substances 0.000 claims abstract description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 16
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 111
- 239000007789 gas Substances 0.000 claims description 50
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- 238000003786 synthesis reaction Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims 2
- 229910001195 gallium oxide Inorganic materials 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 48
- 238000010298 pulverizing process Methods 0.000 abstract description 7
- 239000010949 copper Substances 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 150000002431 hydrogen Chemical class 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 239000002574 poison Substances 0.000 abstract description 3
- 231100000614 poison Toxicity 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000008246 gaseous mixture Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 10
- -1 alicyclic hydrocarbons Chemical class 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 3
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GFCDJPPBUCXJSC-UHFFFAOYSA-N [O-2].[Zn+2].[Cu]=O Chemical compound [O-2].[Zn+2].[Cu]=O GFCDJPPBUCXJSC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-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
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- WVYYHSKIGBEZCQ-UHFFFAOYSA-N [O-2].[O-2].[Cr+3].[Fe+2] Chemical compound [O-2].[O-2].[Cr+3].[Fe+2] WVYYHSKIGBEZCQ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- ADCBRSDRBJKLFK-UHFFFAOYSA-N zinc chromium(3+) oxygen(2-) Chemical compound [O-2].[Cr+3].[O-2].[Zn+2] ADCBRSDRBJKLFK-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
Definitions
- the present invention relates to a mixed gas containing carbon monoxide and one or both of hydrogen and water vapor, or a dimethyl ether from a mixed gas further containing carbon dioxide.
- the present invention relates to a method for producing the same.
- Japanese Patent Publication No. 54-32764 discloses a methanol synthesis catalyst having copper supported on aluminum and a methanol dehydration catalyst having zinc and chromium supported on aluminum. Is mixed and charged into the reactor, or these catalysts are alternately layered and charged into the reactor, and a mixed gas of carbon monoxide, carbon dioxide and hydrogen is supplied to the reactor. A method for producing dimethyl ether is described.
- Japanese Patent Publication No. 11-332332 discloses a mixture of copper, zinc, chromium, and an oxide of aluminum so as to withstand heat, high-temperature steam, and mechanical stress.
- JP-A-3-181435 discloses a mixed gas of carbon monoxide and hydrogen, or a mixed gas containing carbon dioxide and / or water vapor.
- a method for producing dimethyl ether characterized by using a catalyst suspended in a solvent and using it in slurry is described.
- the above-mentioned conventional method for producing dimethyl ether has the following problems.
- Catalysts composed of oxides of copper, zinc, chromium, and aluminum have insufficient mechanical strength of the catalyst particles, and the catalyst particles are gradually powdered by the action of gas fluid or heat that flows through the catalyst layer at high speed. And cause clogging of the catalyst layer.
- the catalyst must be regenerated when the catalyst activity decreases, as the catalyst activity gradually decreases over the reaction time. Therefore, the catalyst had to be extracted from the reactor and regenerated, but extracting the catalyst was extremely troublesome.
- the present invention has been made to solve the above-mentioned conventional problems and to further improve the method described in Japanese Patent Application Laid-Open No. 3-181435 developed by the present inventors.
- the purpose is to:
- the present invention has been made to achieve the above object, and is a mixed gas containing carbon monoxide and one or both of hydrogen and water vapor, or a mixed gas further containing carbon dioxide.
- a mixed catalyst containing at least zinc oxide and copper oxide or chromium oxide and aluminum oxide is pulverized and then compressed and adhered by a high-pressure press. It is characterized in that it is used in a slurry state by suspending a catalyst that has been pulverized again or at least a mixed catalyst composed of zinc oxide, copper oxide and alumina in a solvent. It has been done.
- any solvent can be used as long as it exhibits a liquid state under the reaction conditions.
- any solvent can be used as long as it exhibits a liquid state under the reaction conditions.
- aliphatic, aromatic and alicyclic hydrocarbons, alcohols, ethers, esters, ketones and halides, and mixtures of these compounds can be used.
- the catalyst used in the present invention is a combination of a known methanol synthesis catalyst, a methanol dehydration catalyst and a water gas shift catalyst.
- methanol synthesis catalysts include copper oxide zinc monoxide and zinc oxide chromium oxide.
- methanol dehydration catalysts include alumina, silica'alumina, and zeolite.
- the metal oxide components of zeolite include oxides of alkaline metals such as sodium and magnesium, and oxidation of alkali clans such as calcium and magnesium. Things.
- Examples of water gas shift catalysts include copper oxide zinc oxide and iron oxide chromium oxide.
- the methanol synthesis catalyst is an excellent water gas shift catalyst, and can also serve as a water gas shift catalyst.
- An alumina-supported copper oxide catalyst can be used as a catalyst that also functions as a methanol dehydration catalyst and a water gas shift catalyst.
- the mixing ratio of the above-mentioned methanol synthesis catalyst, methanol dehydration catalyst and water gas shift catalyst is not particularly limited, and the type of each component or the reaction condition is not particularly limited. It may be appropriately selected according to the conditions, but usually, the dehydration reaction of methanol with respect to the methanol synthesis catalyst 1 is performed in a weight ratio.
- the medium is about 0.1-5, preferably about 0.2-2, and the aqueous gas shift catalyst is about 0.2-5, preferably about 0.5-3.
- the enclosure is often appropriate.
- the methanol synthesis catalyst also serves as a water gas shift catalyst, the amount of the water gas shift catalyst is added to the amount of the methanol synthesis catalyst.
- the catalyst is co-milled, that is, ground in a mixed state.
- the particle size of this milling is about 0.1 to 20 / an, preferably about 0.5 to 10;
- the co-ground product is then pressed and adhered.
- the pressure is such that the co-ground material is compressed and adhered, and is usually about 100 to 500 kgr Zoi. Pressing may be performed using a high-pressure press or the like.
- the compressed adherent is pulverized again. In this pulverization, the particle size may be about l-300 / mi, preferably about 10-150 / m.
- This milled material can be activated as needed and used as a catalyst as it is, but may be sieved if necessary. If the uniform dispersion state of each oxide is insufficient, compression and pulverization can be repeated again.
- the alumina-supported copper oxide catalyst which also serves as a methanol dehydration catalyst and a water gas shift catalyst, can be produced by a general method conventionally used for producing this type of catalyst. For example, a precipitation method, an impregnation method and the like can be used.
- copper nitrate, carbonate, organic acid salt, halide, hydroxide, etc., and aluminum nitrate, carbonate, organic acid salt, aluminate, hydroxide are used as catalyst raw materials.
- the ratio of copper oxide supported on the alumina carrier is about 0.5 to 50, preferably about 1 to 20, of copper oxide with respect to 100 of alumina.
- the mixing ratio of the above-mentioned methanol synthesis catalyst and the alumina-supported copper oxide catalyst is not particularly limited, and may be appropriately selected according to the type of each component or the reaction conditions. , Usually 1:20 by weight A range of about 20: 1, preferably about 1:10 to 10: 1 is often appropriate.
- Both of the above catalysts are used in the form of a powder, and the average particle size is preferably 300 or less, preferably about 1 to 200, and particularly preferably about 10 to 150. For this purpose, it can be further pulverized if necessary. Both can be mixed and used after pulverization, but it is preferable to use co-pulverization.
- the amount of the catalyst to be present in the solvent is appropriately determined depending on the type of the solvent, the reaction conditions, and the like, but is usually 1 to 50% by weight, preferably about 2 to 30% by weight based on the solvent.
- a wide range of mixing ratios of hydrogen and carbon monoxide can be used to dissolve carbon oxide and hydrogen in a solvent once and then contact the catalyst.
- those having a H 2 C 0 molar ratio of 20 to 0.1, preferably 10 to 0.2 can be used.
- hydrogen and the ratio of carbon monoxide (H 2 / CO ratio) authored rather small (for example, the 0.1 or less) in the case of carbon monoxide which does not include a gas mixture or hydrogen is separately scan team It is necessary to supply some water and convert some of the carbon monoxide in the reactor to hydrogen and carbon dioxide by steam.
- the gas composition and the composition on the catalyst surface do not always match, so a mixed gas of carbon monoxide and hydrogen or carbon monoxide A relatively high concentration (eg, 20-50%) of carbon dioxide may be present in the gas.
- components that act as catalyst poisons such as sulfur compounds such as hydrogen sulfide, cyanide compounds such as hydrogen cyanide, and chlorine compounds such as hydrogen chloride, are present in the raw material gas.
- the effect on the catalyst is significantly reduced compared to the gas-solid contact method. If the catalyst is poisoned and its activity decreases, slurry is extracted from the reactor and a slurry containing a highly active catalyst is injected into the reactor.
- the productivity of the entire reactor can be kept constant.
- dimethyl ether By flowing a mixed gas of carbon monoxide and hydrogen through the catalyst / solvent slurry, dimethyl ether can be obtained in high yield.
- the mixed gas is blown into the solvent and, if necessary, further stirred with a stirrer or the like.
- the reaction temperature is preferably from 150 to 400 ° C, particularly preferably from 200 to 350 ° C. If the reaction temperature is lower than 150 ° C or higher than 400 ° C, the conversion of carbon monoxide is low.
- the reaction heat can be recovered as medium-pressure steam by installing a cooling coil in the reactor and passing hot water through it. Thereby, the reaction temperature can be freely controlled.
- the reaction pressure is 10 to 300 kg Z cm 2 , especially 15 to: l50fcg Z cm 2 is preferred.
- the reaction pressure is l OKG Z cm 2 yo Ri low and a conversion of carbon monoxide is low and 300kg Bruno cm 2 yo Ri high and the reactor becomes a special, also a required great energy force for boosting Not economical.
- the space velocity (the feed rate of the mixed gas under the standard condition per kg of catalyst) is preferably 100 to 50,000 £ / kg * h, especially 500 ⁇ 30000 / kg ⁇ h. If the space velocity is greater than 50,000 ⁇ Z kg ⁇ h, the conversion of carbon monoxide will be low, and if it is less than 100 ⁇ X kg-, the reactor will be extremely large and not economical.
- Methanol synthesis catalyst, methanol dehydration catalyst and water gas shift catalyst suspended in a solvent are co-milled, compressed and adhered in advance, and then re-milled to make the distances of various catalysts extremely close. ,it can.
- the reaction cycle described below proceeds promptly, and the yield of dimethyl ether is improved. That is, in this reaction, first, methanol is formed on the methanol synthesis catalyst from carbon monoxide and hydrogen, and then the methanol is transferred to the methanol dehydration catalyst, and the dimethyl ether is dehydrated and condensed. And water is produced. In addition, Water migrates to the water gas shift catalyst and / or the methanol synthesis catalyst and reacts with carbon monoxide to produce carbon dioxide and hydrogen.
- the reaction formula is as follows.
- the alumina catalyst is used without pulverizing the alumina catalyst instead of the alumina-supported copper oxide catalyst, the water generated on the alumina once dissolves in the solvent, First, the reaction of formula (3) proceeds, but the water dissolved in the solvent desorbs to the gas phase. The possibility of release from the reaction system together with dimethyl ether upon separation is sufficiently high, and in this case, a high water conversion cannot be obtained. If there is a catalyst (copper oxide) that promotes the reaction of formula (3) in the immediate vicinity of alumina, water reacts with carbon monoxide without dissolving in the solvent and is high. The conversion of water is obtained, and the progress of the reaction cycle is smooth.
- a catalyst copper oxide
- the mixed gas does not come into direct contact with the catalyst as in the gas-solid contact reaction, but once carbon monoxide and hydrogen are dissolved in the solvent, it comes into contact with the catalyst.
- the solvent in consideration of the solubility of hydrogen and hydrogen in the solvent, a constant composition of carbon monoxide and hydrogen can be achieved in the solvent irrespective of the gas composition, and the catalyst It can be supplied to the surface. Therefore, hydrogen and carbon monoxide A wide range of mixing ratios (H 2 ZC 0 ratio) is applicable.
- N-Hexadecane is added to a stainless steel autoclave of internal volume, and 3.7 g of the above-mentioned fine powdered catalyst is added to make the suspension into a suspended state. did.
- a mixed gas H 2 : CO 2
- N 2 1: 1: 9, molar ratio
- the reaction is carried out at a given reaction temperature, a reaction pressure of 3013 ⁇ 4 / ⁇ -G, and a stirring rotation speed of 100 rpm, and a mixed gas of hydrogen and carbon monoxide with a molar ratio of H 2 ZC 0 of 1 is converted to normal temperature and normal pressure. so The flow was carried out at a flow rate of 1 ⁇ 11.
- reaction products and unreacted products obtained by the above operations were analyzed by gas chromatography.
- Tables 1 to 6 show the reaction conditions and experimental results.
- H 2 0 conversion was calculated from the following equation.
- the method of the present invention has a high yield of dimethyl ether, a high conversion rate of water generated by the reaction to hydrogen, does not require clogging of the catalyst, and does not require mechanical strength.
- an inexpensive powder catalyst can be used, and the catalyst can be easily extracted and filled from the reactor. Furthermore, removal and recovery of reaction heat and control of reaction temperature are easy.
- the range of application of the ratio of carbon monoxide to hydrogen is wide, and it is possible to perform the reaction in the presence of high concentration of carbon dioxide, and to reduce the influence of impurities and catalyst poisons. It has the effect of industrial availability.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92923527A EP0591538A4 (en) | 1991-11-11 | 1992-11-11 | Process for the preparation of dimethyl ether. |
US08/087,757 US5389689A (en) | 1991-11-11 | 1993-07-09 | Method of producing dimethyl ether |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29463091 | 1991-11-11 | ||
JP3/294630 | 1991-11-11 | ||
JP3/294631 | 1991-11-11 | ||
JP29463191 | 1991-11-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993010069A1 true WO1993010069A1 (en) | 1993-05-27 |
Family
ID=26559926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/001467 WO1993010069A1 (en) | 1991-11-11 | 1992-11-11 | Process for producing dimethyl ether |
Country Status (3)
Country | Link |
---|---|
US (2) | US5389689A (ja) |
EP (1) | EP0591538A4 (ja) |
WO (1) | WO1993010069A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0845294A3 (en) * | 1996-05-13 | 1998-12-09 | Nkk Corporation | Catalyst for dimethyl ether, method of producing catalyst and method of producing dimethyl ether |
JP2000103757A (ja) * | 1998-09-30 | 2000-04-11 | Chiyoda Corp | 低級炭化水素ガスからジメチルエーテルを製造する方法 |
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EP0591538A4 (en) * | 1991-11-11 | 1995-01-04 | Kaoru Fujimoto | Process for the preparation of dimethyl ether. |
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JPS63128097A (ja) * | 1986-11-18 | 1988-05-31 | Res Assoc Petroleum Alternat Dev<Rapad> | 合成ガスの芳香族炭化水素への転化方法 |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0845294A3 (en) * | 1996-05-13 | 1998-12-09 | Nkk Corporation | Catalyst for dimethyl ether, method of producing catalyst and method of producing dimethyl ether |
US6147125A (en) * | 1996-05-13 | 2000-11-14 | Nkk Corporation | Method and apparatus for producing dimethyl ether |
EP1174408A1 (en) * | 1996-05-13 | 2002-01-23 | Nkk Corporation | Catalyst for the preparation of dimethyl ether, method of producing catalyst and method of producing dimethyl ether |
US6562306B1 (en) | 1996-05-13 | 2003-05-13 | Nkk Corporation | Apparatus for producing dimethyl ether |
US6800665B1 (en) | 1996-05-13 | 2004-10-05 | Jfe Holdings, Inc. | Method for producing dimethyl ether |
US7033972B2 (en) | 1996-05-13 | 2006-04-25 | Jfe Holdings, Inc. | Catalyst for producing dimethyl ether, method for producing catalyst and method for producing dimethyl ether |
JP3341808B2 (ja) | 1996-12-19 | 2002-11-05 | 日本鋼管株式会社 | ジメチルエーテル製造用触媒およびジメチルエーテルの製造方法 |
JP3414178B2 (ja) | 1996-12-26 | 2003-06-09 | Jfeエンジニアリング株式会社 | ジメチルエーテルの製造方法 |
JP3410688B2 (ja) | 1998-08-04 | 2003-05-26 | 住友金属工業株式会社 | スラリー床反応方式用媒体油及びジメチルエーテルの製造方法 |
JP2000103757A (ja) * | 1998-09-30 | 2000-04-11 | Chiyoda Corp | 低級炭化水素ガスからジメチルエーテルを製造する方法 |
RU2256645C2 (ru) * | 2002-11-28 | 2005-07-20 | Общество с ограниченной ответственностью "Нефте-газо-химические технологии" | Способ получения диметилового эфира |
JP2008019176A (ja) * | 2006-07-11 | 2008-01-31 | Ihi Corp | メタノールおよびジメチルエーテルの合成方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0591538A4 (en) | 1995-01-04 |
US5466720A (en) | 1995-11-14 |
EP0591538A1 (en) | 1994-04-13 |
US5389689A (en) | 1995-02-14 |
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