Hot dry rock supercritical carbon dioxide power generation and carbon sequestration coupling system

Abstract

The invention provides a hot dry rock supercritical carbon dioxide power generation and carbon sequestration coupling system. The coupling system comprises a supercritical carbon dioxide power generation system and a carbon dioxide compression cooling system, wherein the supercritical carbon dioxide power generation system comprises a first filter, a steam turbine, a first condenser, a first working medium pump, a first recooler and a generator which are connected in sequence; the carbon dioxide compression cooling system comprises a second filter, a first compressor, an intercooler, a secondcondenser, a second working medium pump and a second recooler which are connected in sequence; and the steam turbine, the first compressor and the generator are coaxially connected, a working medium outlet pipeline of the second recooler is divided into two paths, one path is converged with a working medium outlet pipeline of the first recooler and leads to an underground hot dry rock crack, and the other path leads to an underground salt water layer. Through the coupling system, the problem that CO2 compression power consumption is high in the carbon sequestration process is solved.

Description

technical field [0001] The present invention relates to the technical field of carbon sequestration, and more specifically relates to a coupled system for power generation of hot dry rock supercritical carbon dioxide and carbon sequestration. Background technique [0002] All CO from fossil fuel energy 2 About one-third of the emissions come from fossil fuel power plants. Therefore, immediate solutions to mitigate global warming include implementing CO2 reduction strategies in fossil fuel power plants or using clean renewable energy generation technologies. It is estimated that carbon sequestration technology could enable 90% of the carbon dioxide emissions from large fossil fuel power plants to be captured and safely stored underground. At the same time, carbon sequestration technologies could reduce CO2 emissions by 19% in 2050. However, compressed CO in carbon sequestration 2 The process bears most of the cost and energy losses, accounting for approximately one-third ...

AI Technical Summary

Problems solved by technology

Regenerative Organic Rankine cycle to provide compressed CO 2 The required compressor power will cause the problem of high power consumption of the 0 compressor; with supercritical CO 2 It is a device for circulating working fluid, bringing the heat from the ground to the ground for power generation, but the chemical reaction of CO2 in underground rock cracks will cause a certain amount of working fluid to be lost

Images