A system for coupling in-situ pyrolysis of oil-rich coal with carbon capture

An in-situ pyrolysis and carbon capture technology, applied in coal gasification, lighting and heating equipment, indirect carbon dioxide emission reduction, etc., can solve the problems of surface soil pollution, pollution, etc., to reduce pollution, increase oil yield, reduce The effect of energy input

Active Publication Date: 2022-05-20
XI AN JIAOTONG UNIV
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Problems solved by technology

The process of conventional mining to the ground and then refining oil in the refining furnace produces a lot of pollution, and the pyrolysis residue with low volatile content after pyrolysis is also a huge amount of solid waste. produce pollution

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  • A system for coupling in-situ pyrolysis of oil-rich coal with carbon capture

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Embodiment Construction

[0028] The present invention is described in further detail below in conjunction with the accompanying drawings:

[0029] See Figure 1 , the present invention provides a oleo-rich coal in situ pyrolysis and carbon capture coupling system, comprising a power station oxygen-enriched combustion boiler 1, compressor 2, air separation device 3, first coal seam block 4, second coal seam block 5, freezing wall 6, fuel 14 composed of in situ coal pyrolysis portion; heat exchanger 7, gas-liquid separation device 8, oil product 9, circulating carbon dioxide 10, pure oxygen 11, primary wind 12, organic gas 13, fuel 14, capture carbon dioxide 15, first valve 16, second valve 17, The third valve 18, the boiler air preheater 19 of the waste heat utilization portion. The system comprehensively considers the optimization of in situ pyrolysis part, waste heat utilization part and carbon capture, and develops the process of flue gas pyrolysis of coal seam, and the process of comprehensive utilizati...

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Abstract

The invention discloses a system for in-situ pyrolysis of oil-rich coal coupled with carbon capture, comprising a power plant oxygen-enriched combustion boiler, a compressor, an air separation device, a heat exchanger, a gas-liquid separation device and a boiler air preheater. For fuels with high tar yields such as oil-rich coal, which are easily decomposed to generate oil and gas when heated, the present invention uses the flue gas at the tail of the oxygen-enriched combustion power plant boiler to heat the underground coal seam to realize in-situ pyrolysis and oil extraction of coal, and completes the in-situ coal thermal The cascade utilization of energy in the solution process. The oil produced during the pyrolysis process is extracted, the rest is utilized and the carbon dioxide is captured. The process of inputting fuel and outputting electric energy and oil in the whole system is realized without discharging pollutants and carbon dioxide. In the process of in-situ pyrolysis, the system realizes the clean and efficient utilization of oil-rich coal and promotes the goal of energy carbon neutrality.

Description

Technical field [0001] The present invention relates to an oil-rich coal in situ pyrolysis coupled with carbon capture coupling system. Background [0002] The development of unconventional oil and gas resources provides an alternative path to the supply of oil, and heating pyrolysis can produce a considerable amount of oil and gas products. Pyrolysis and conversion of these coals avoids direct burning of coal, reduces pollution to the atmosphere, and enhances the country's energy security. Conventional mining to the surface and then in the refining furnace to produce oil production process produces a lot of pollution, and the pyrolysis residue after pyrolysis is also a huge amount of solid waste, if not properly handled can pollute the surface soil. As an emerging model, underground in situ pyrolysis can reduce the pollution of the atmosphere and soil, and the process of heating pyrolysis extraction is carried out underground, but because the pyrolysis process requires a large a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/243E21B43/295F22B33/18F23L7/00F23L15/00
CPCE21B43/243E21B43/295F22B33/18F23L7/007F23L15/00Y02P90/70
Inventor 王长安毛崎森周磊赵林车得福
Owner XI AN JIAOTONG UNIV
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