A distributed carbon dioxide power generation system without compression process

Abstract

The invention discloses a distributed carbon dioxide power generation system without a compression process, wherein the carbon dioxide working medium at room temperature and high pressure is directly obtained by using a carbon dioxide steel cylinder, expanded into a turbine to perform work, and recovered by an organic amine solution absorption pool after the work is completed. The carbon dioxide working fluid in the absorption pool is desorbed by heating and enters the gas storage tank. The regenerated absorbent organic amine solution re-enters the absorption pool to absorb carbon dioxide. This power generation system has no compression process, and at the same time adopts a distributed layout method to conveniently adjust power according to the needs of back-end users. The invention has the advantages of fewer system components, low cost, convenient design, control, operation and maintenance, high reliability, effective reduction of emissions and meeting the needs of environmental protection.

Description

technical field [0001] The invention belongs to the field of carbon dioxide power generation, and in particular relates to a distributed carbon dioxide power generation system without a compression process. Background technique [0002] In recent years, supercritical carbon dioxide working fluid has been widely used in various power generation systems, and the Brayton cycle adopted in the background of nuclear energy, solar energy, geothermal energy, waste heat utilization, etc. has attracted extensive attention. The excellent characteristics of the supercritical carbon dioxide Brayton cycle are mainly manifested in: high power density, small system volume; low temperature compared with gas turbines, no high-temperature resistant materials are required; small compression factor, which can reduce compression power consumption; it belongs to a single-phase cycle, There is no phase change process and no condenser is required. In the process of its research and development, the...

AI Technical Summary

Problems solved by technology

In the process of its research and development, the realization of the supercritical carbon dioxide Brayton cycle has the following limitations: the working medium in the system is difficult to maintain in the supercritical state, and once the transcritical physical properties change, its density and specific heat will change greatly , it is difficult to control; the single-stage pressure ratio of the compressor is difficult to increase; the cooling and sealing reliability of key equipment such as compressors and turbines is insufficient; the cost of compressors, turbines and other equipment is high and the economy is poor

[0003] To sum up, since there are many key components in the supercritical carbon dioxide Brayton cycle system, it is very difficult to ensure the reliability of each component during operation and achieve the required system efficiency

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