System and method for coupling co-production of synthetic gas

Abstract

The invention discloses a system and a method for coupling co-production of synthetic gas. The system is composed of a unit for directly capturing carbon dioxide in air and a unit for preparing the synthetic gas by chemically circularly reforming methane, wherein the unit for directly capturing carbon dioxide in air comprises a dryer for drying air, a carbon dioxide adsorption chamber for capturing carbon dioxide, a condenser, a gas-liquid separator, a gas pump, a gas tank for storing desorbed carbon dioxide and a carbon dioxide concentration detector; and the unit for preparing the syntheticgas by chemically circularly reforming methane includes a reduction reactor and an oxidation reactor. The system controls the adsorption and desorption process of carbon dioxide in the air by adjusting the humidity of the carbon dioxide capturing unit, and a mixed gas composed of the desorbed carbon dioxide and the air is stored in the gas tank, and enters the methane chemical circular reforming unit through a gas tank gas discharge valve under the control of a mass flow meter. The method realizes the integration of the negative emission of carbon dioxide and the conversion and regeneration ofenergy, and improves the economic benefit of the carbon dioxide in the air.

Description

technical field [0001] The invention relates to the field of negative emission of carbon dioxide in the air and energy conversion and utilization, in particular to a system and method for coupling co-production of synthetic gas. Background technique [0002] In recent years, the problem of global warming has become increasingly prominent as the massive combustion of fossil fuels has led to excessive emissions of carbon dioxide. Among the many current solutions, the capture and storage of carbon dioxide is considered to be a more effective medium-term solution, but the cost of capturing carbon dioxide in this solution is relatively high, and the storage method is easy to deal with when natural disasters such as earthquakes occur. leakage. Therefore, in addition to carbon sequestration, resource utilization of carbon may be an economically feasible solution to alleviate anthropogenic carbon dioxide emissions. [0003] In addition, carbon resource utilization should be closel...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a system and method for coupling co-production of syngas, which uses direct capture of carbon dioxide in the air and methane chemical cycle reforming to couple co-production of syngas to solve the problem of traditional chemical cycle technology for upstream low-cost wet process Direct capture of carbon dioxide concentration in the air is limited to achieve low-cost capture of carbon dioxide and on-site resource utilization

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