PROCESS AND PLANT FOR PRODUCING METHANE OR METHANOL FROM A SOLID RENEWABLE FEEDSTOCK

Process for producing methane or methanol, said process comprising the steps of: i) conducting a solid renewable feedstock to a thermal decomposition step, this being a pyrolysis step or a hydrothermal liquefaction step, for producing: a first off-gas stream comprising hydrocarbons, a solid carbon s...

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Bibliographische Detailangaben
Hauptverfasser:	STUMMANN, Troels Dahlgaard, STUMMANN, Magnus Zingler
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR INORGANIC CHEMISTRY LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Process for producing methane or methanol, said process comprising the steps of: i) conducting a solid renewable feedstock to a thermal decomposition step, this being a pyrolysis step or a hydrothermal liquefaction step, for producing: a first off-gas stream comprising hydrocarbons, a solid carbon stream, and optionally a first liquid oil stream; upgrading the first off-gas stream by conducting it to a hydro/deoxygenation (HDO/DO) step i.e. hydrodeoxygenation or deoxygenation step in which said HDO/DO step is conducted in the absence of steam, and a subsequent separation step, for generating water, a second liquid oil stream and an upgraded first off-gas stream; ii) conducting the first off-gas stream or the upgraded first off-gas stream to an olefin removal step, for generating a further upgraded first off-gas stream which is free of olefins; iii-1) conducting the first off-gas stream, or the upgraded first off-gas stream, or the further upgraded first off-gas stream, to a methanation step under the generation of steam for producing said methane; or iii-2) conducting the first off-gas stream, or the upgraded first off-gas stream, or the further upgraded first off-gas stream, to a steam reforming step for producing a methanol synthesis gas and subsequently conducting the methanol synthesis gas to a methanol synthesis step under the generation of steam for producing said methanol; iv) conducting steam, such as at least a portion of the steam generated in step iii-1) or iii-2), to an electrolysis step for producing an oxygen stream and a hydrogen stream; v) conducting at least a portion of the hydrogen stream from the electrolysis step to any of the: thermal decomposition step including HDO-step, olefin hydrogenation step, methanation step, methanol synthesis step, or combinations thereof.