Coal supercritical water gasification power generation system capable of controlling available energy loss and working method

Abstract

The invention discloses a coal supercritical water gasification power generation system capable of controlling the available energy loss and a working method. The system comprises a supercritical water gasification reactor, an oxidation reactor, a condenser, a gas-liquid separator, a compressor, a plurality of turbines, a heat exchanger and a water pump. The coal supercritical water gasification power generation system is characterized in that supplied water entering the water side of the high-temperature heat exchanger is shunted, meanwhile a high-temperature working medium entering the steamside of the heat exchanger is shunted, heat exchange is conducted through the working medium subjected to high-pressure turbine temperature reduction and decompression, the irreversibility of the heat exchanger is reduced, and the power generation efficiency of the system is improved; meanwhile, a supercritical water gasification technology is adopted, so that generation of atmospheric pollutantsis avoided, carbon dioxide trapping is facilitated, and the cleanliness of coal utilization is achieved. The coal supercritical water gasification power generation system is beneficial to developmentand improvement of the coal clean power generation technology, and energy safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of coal clean utilization, and relates to a coal supercritical water gasification power generation system and working method for controlling the loss of available energy, specifically a coal supercritical water gasification power generation system for controlling the loss of available energy in the main heat exchange process system. Background technique [0002] Coal is the primary energy with the largest reserves in China, and its rational utilization is an important guarantee for China's energy security and sustainable economic and social development. However, the existing methods of coal utilization mainly based on combustion power generation cause air pollutants and greenhouse gas emissions, causing serious environmental problems such as acid rain, smog, and global warming, threatening the stability of the ecological environment and human health. In order to achieve a balance between energy supply and e...

AI Technical Summary

Problems solved by technology

However, there is a large temperature difference in this heat transfer process, resulting in a large loss of available energy, which limits the improvement of system performance.

There is currently no good power generation system design that limits the loss of usable energy in the heat transfer process

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