Integrated system for carrying out carbon capture power generation by using liquefied natural gas

Abstract

The invention discloses an integrated system for carrying out carbon capture power generation by using liquefied natural gas. The integrated system comprises an LNG gasification and cold energy utilization system, an air separation oxygen generation system and an oxygen-enriched combustion turbine cycle power generation and tail gas carbon recovery system. Compared with the prior art, the integrated system has the positive effects that the system integrates LNG gasification, cold energy oxygen generation, oxygen-enriched power generation and carbon capture, and has the advantages that the energy consumption in the links of the LNG gasification, the oxygen generation and the carbon capture can be greatly reduced, the LNG cold energy utilization rate is improved, the power generation efficiency is improved, and the zero-carbon-emission power generation effect can be achieved by injecting the captured carbon dioxide into underground salt water for storage. According to the integrated system, pure oxygen is prepared by using LNG cold energy, pure oxygen and natural gas participate in oxygen-enriched combustion turbine cycle power generation, and power generation tail gas is subjected to carbon dioxide capture, so that the energy consumption of LNG gasification, oxygen generation and carbon capture links is reduced, zero-carbon power generation technology is created, the social demand of carbon neutralization in the future is met, and the application prospect is wide.

Description

technical field [0001] The invention relates to an integrated system using liquefied natural gas for power generation with carbon capture, in particular to a pure oxygen production using LNG cold energy, pure oxygen, natural gas and carbon dioxide participate in oxygen-enriched combustion turbine cycle power generation, and the power generation tail gas is used for power generation. Carbon dioxide capture system. Background technique [0002] In recent years, the greenhouse effect has attracted much attention, and studies have shown that the CO in the atmosphere 2 It is one of the gases with the greatest impact on the greenhouse effect. The warming effect it produces is about 63% of the total warming effect. As a major carbon emitter, my country is facing severe pressure to reduce carbon emissions. [0003] Liquefied Natural Gas (LNG for short) is mainly composed of methane, and the atmospheric boiling point of methane is -161°C. Its manufacturing process is to first pur...

AI Technical Summary

Problems solved by technology

However, from a global perspective, the utilization rate of LNG cold energy is only about 20%, and the utilization rate of cold energy resources is low. Serious waste

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