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Supercritical carbon dioxide power generation system and operation method

A power generation system, carbon dioxide technology, applied in the direction of machines/engines, steam engine devices, mechanical equipment, etc., to achieve the effect of improving energy utilization, simple system, and strong adaptability

Active Publication Date: 2022-06-17
HUATIAN NANJING ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the existing supercritical carbon dioxide power generation system for waste heat recovery, the purpose of the present invention is to provide a supercritical carbon dioxide power generation system and operation method using composite multi-channel cascading, which can realize waste heat while ensuring the simplicity of the system. Energy cascade utilization, and can adapt to different levels of waste heat heat sources and make full use of waste heat by simply adding or subtracting system components

Method used

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  • Supercritical carbon dioxide power generation system and operation method
  • Supercritical carbon dioxide power generation system and operation method
  • Supercritical carbon dioxide power generation system and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 The structure of the supercritical carbon dioxide power generation system in Example 1 is schematically shown. like figure 1 As shown, in a supercritical carbon dioxide power generation system provided by this embodiment, m=2, n=3.

[0050] Specifically, the heater system includes a primary heat exchanger 11 , a secondary heat exchanger 12 and a tertiary heat exchanger 13 . The turbine system includes a primary turbine 21 and a secondary turbine 22 . The regenerator system includes a primary regenerator 31 and a secondary regenerator 32 . The precooling system includes a precooler 4 . The compression system includes a compressor 5 . The routing system 6 includes a main pipeline 61 , a branch pipeline 62 , a flow divider 63 , a collector 64 , and a pipeline 65 that connect each system. The power generation system may include a discharge machine. In this embodiment, the primary turbine 21 , the secondary turbine 22 , the compressor 5 and the generator 7 ar...

Embodiment 2

[0057] figure 2 The structure of the supercritical carbon dioxide power generation system in Example 2 is schematically shown. like figure 2 As shown, in a supercritical carbon dioxide power generation system provided by this embodiment, m=3, n=4, the system can adapt to waste heat with a higher temperature level. The specific connection and operation modes are similar to those in Embodiment 1, and will not be repeated.

Embodiment 3

[0059] image 3 The structure of the supercritical carbon dioxide power generation system in Example 3 is schematically shown. like image 3 As shown, in a supercritical carbon dioxide power generation system provided by this embodiment, m=2, n=2, the system can be adapted to waste heat with a lower temperature level. The difference from Example 1 is that after the secondary heat exchanger 12 and the secondary regenerator 32 are heated respectively, they are no longer collected, but the outlet of the secondary heat exchanger 12 is directly connected to the inlet of the secondary turbine 22. The outlet of the heat-absorbing side of the first-stage regenerator 32 is directly connected to the inlet of the first-stage turbine 21, and the other connection and operation modes are similar to those in Embodiment 1, and will not be repeated.

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Abstract

The invention discloses a supercritical carbon dioxide power generation system and an operation method. The system includes: pre-cooling system, heat exchange system, heat recovery system, and compression system, turbine system and generator connected through the shaft. The invention classifies the heat exchange system, the turbine system and the heat recovery system, reasonably divides and gathers the working medium flow in the whole system, can realize the cascade utilization of waste heat energy while ensuring the simplicity of the system, and can realize the cascade utilization of waste heat energy through simple The increase and decrease of components in the system achieves the purpose of adapting to different levels of waste heat heat sources, and can make full use of waste heat to ensure that waste heat energy is recovered to the greatest extent and improve energy utilization.

Description

technical field [0001] The invention relates to the technical field of energy power generation, in particular to an efficient supercritical carbon dioxide-based power generation system and an operation method. Background technique [0002] Energy is the foundation of human survival and economic development, and the world's energy demand continues to grow with economic development. At present, the utilization rate of coal energy is relatively low, and waste heat sources generally exist in today's industry and other fields. As the main form of power generation, thermal power plants still have at least 50% of the input energy not being effectively utilized, while other large coal consumers such as the metallurgical industry , the waste heat released by the production process is even greater. Therefore, improving the utilization efficiency of waste heat is one of the main means to increase the utilization efficiency of coal, which is of great significance to energy conservation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K25/10F01K13/00F01D15/10
CPCF01K25/103F01K13/00F01K13/006F01D15/10
Inventor 吕冬强张学超江文豪王浩王雷
Owner HUATIAN NANJING ENG & TECH CORP MCC