Process and equipment for converting carbon dioxide in flue gas into natural gas by using dump powerenergy

A process for converting carbon dioxide in flue gas into natural gas by using dump power energy. The process uses the dump power energy to electrolyze water to generate hydrogen gas; the hydrogen gas and carbon dioxide captured from industrial flue gas are subjected to a methanation reaction; heat g...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN YILONG, ZHANG YANFENG, FANG ZHANGJIAN
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 CHEMISTRY COMPOUNDS THEREOF FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR INORGANIC CHEMISTRY LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	A process for converting carbon dioxide in flue gas into natural gas by using dump power energy. The process uses the dump power energy to electrolyze water to generate hydrogen gas; the hydrogen gas and carbon dioxide captured from industrial flue gas are subjected to a methanation reaction; heat generated from the methanation reaction is used to heat water to generate superheated water vapor for driving a steam turbogenerator to generate power for supplementing power energy for electrolyzing water, and thus natural gas is obtained by synthesizing. Equipment used in synthesized natural gas is further provided. The equipment is mainly formed by combining a transforming and rectifying device (1), an electrolytic bath (2), a steam turbogenerator (4), a carbon dioxide heater (21), at least two-stage of fixed bed reactors (11, 13), various indirect heat exchangers, a steam drum (12), a natural gas condenser (8), and a process water pipeline (3).