High-temperature gas cooled reactor carbon dioxide power generation system and method

Abstract

The invention discloses a high-temperature gas cooled reactor carbon dioxide power generation system and method. The system comprises a helium-carbon dioxide heat exchanger (1), a turbine (5) and a compressor (3), wherein a first outlet of the helium-carbon dioxide heat exchanger (1) is connected to an inlet of the turbine (5), an outlet of the turbine (5) is connected to an inlet of the compressor (3), and an outlet of the compressor (3) is connected to an inlet of the helium-carbon dioxide heat exchanger (1). According to the method, no phase change exists in the full working condition range of supercritical carbon dioxide power generation circulation, a first loop heat exchanger and a second loop heat exchanger are gas-gas (helium-supercritical carbon dioxide) heat exchangers, dry and wet state conversion is avoided, the problems of flowing instability and the like of two-phase flow in the start, stop and operation processes are solved, and the problem of flow-induced vibration of the heat exchangers is avoided to a great extent in mechanism.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and in particular relates to a system and method for high-temperature gas-cooled reactor carbon dioxide power generation. Background technique [0002] At present, the high-temperature gas-cooled reactor demonstration power station uses the heat generated by the reactor to heat the water with the once-through evaporator to generate steam to drive the steam turbine to generate electricity. [0003] The system has the following problems: [0004] (1) The structure of the system is complex, especially the manufacture and operation of the once-through evaporator is difficult. [0005] (2) In the high-temperature gas-cooled reactor nuclear power plant demonstration project currently under construction, the evaporator heat exchange tube contains 14MPa, 570°C steam, and the outside of the heat exchange tube contains 7MPa, 750°C helium gas with radioactive graphite dust. It is very harmful after ...

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