Method and system for recycling carbon dioxide in indirect coal liquefaction

• Main Authors: GAO YANG, WANG LI, WANG XIANGLI, WU XUETING, JIANG JINRUI, WANG HUI, LI YANLING, WANG CAILI, LIN QIANG
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2023
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention discloses a method and a system for recycling carbon dioxide in indirect coal liquefaction. The system comprises a gasification device, a production device, a collection device and a compression device. Wherein the gasification device is configured to be used for carrying out gasification reaction on raw coal and oxygen to generate a raw gas material flow, the production device is configured to be used for carrying out reaction on the raw gas material flow generated in the gasification device to generate a first carbon dioxide material flow and an oil product, and the collection device is configured to be used for collecting the first carbon dioxide material flow; the compression device is configured to be used for compressing the carbon dioxide material flow collected in the collection device to obtain a recycled carbon dioxide material flow, and the gasification device is further used for enabling the recycled carbon dioxide material flow to continue to react with the feed coal in the gasifica