PRODUCTION OF SYNTHESIS GAS BY USING CARBON DIOXIDE CONTAINING NATURAL GAS AS RAW MATERIAL

PURPOSE: To efficiently produce synthesis gas rich in H2 by adding water to a natural gas contg. CO2 , then, heating this mixture to allow them to react and subsequently, allowing the reaction product to further react at a higher temp. CONSTITUTION: In this production, the synthesis gas consisting o...

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Bibliographische Detailangaben
Hauptverfasser:	CHAGI KAZUHISA, OKADO HIDEO, FUJIMOTO KAORU, YAMAMURA MASAMI, TSUZUKI NAOHIDE, WAKATSUKI TOSHIYA
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY COMPOUNDS THEREOF CRACKING HYDROCARBON OILS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR INORGANIC CHEMISTRY LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY MINERAL WAXES NATURAL GAS NON-METALLIC ELEMENTS PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	PURPOSE: To efficiently produce synthesis gas rich in H2 by adding water to a natural gas contg. CO2 , then, heating this mixture to allow them to react and subsequently, allowing the reaction product to further react at a higher temp. CONSTITUTION: In this production, the synthesis gas consisting of H2 and CO is produced in the continuous two stages, i.e., a stage for steam-reforming hydrocarbons having >=2 carbon atoms and a stage for reforming CO2 with methane. In the stage for steam-reforming hydrocarbons having >=2 carbon atoms, water is added to a natural gas contg. at least >=20vol.% CO2 so that the molar ratio of (the amount of water) to (the total amount of hydrocarbons having >=2 carbon atoms in the natural gas) at the inlet of the stage is 1 to 10 and then, the hydrocarbons having >=2 carbon atoms in the raw material natural gas and water are allowed to react with each other in the presence of a group VIII transition metal catalyst at =700 deg.C to produce the objective synthesis gas.