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System for cycling power generation by means of supercritical CO2 working medium

A technology of working medium circulation and power generation system, which is applied in the direction of machines/engines, energy-saving heating/cooling, lighting and heating equipment, etc., can solve environmental pollution and other problems, achieve the effect of increasing system output power and reducing cold end loss

Active Publication Date: 2014-05-21
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic working medium used in the organic Rankine cycle will also bring about environmental pollution and other problems

Method used

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  • System for cycling power generation by means of supercritical CO2 working medium
  • System for cycling power generation by means of supercritical CO2 working medium
  • System for cycling power generation by means of supercritical CO2 working medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0037] Example 2, such as figure 2 As shown, the difference from Embodiment 1 is that the regenerator 5 is arranged between the outlet of the first turbine, the outlet of the second turbine and the inlet of the generator. High temperature CO at turbine outlet 2 The working fluid is first to the low-temperature CO at the outlet of the first circulating pump 2 The working fluid is heated and then sent to the absorption refrigeration system for further heat release.

Embodiment 3

[0038] Example 3, such as image 3 As shown, the regenerator in the system is cancelled, and the high-temperature CO at the outlet of the first turbine and the second turbine is 2 The working fluid is directly sent to the absorption refrigeration system for heat release.

[0039] Specifically, the inlet of the waste heat boiler 1 is connected to the first circulating pump 16, the outlet is connected to the inlets of the first turbine 2 and the second turbine 3 respectively, and the outlets of the first turbine 2 and the second turbine 3 are connected to the absorption refrigeration system. The tube-side inlet of the generator 6 in the system, the first turbine 2 is used to drive the generator 4 to generate electricity, and the second turbine 3 is used to drive the first circulation pump 16, wherein the tube-side outlet of the generator 6 is connected to the evaporator 10 is connected to the second inlet, and the bottom of the generator 6 is provided with a liquid dis...

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Abstract

The invention discloses a system for cycling power generation by means of a supercritical CO2 working medium. The system comprises a waste heat boiler system, an absorption refrigerating system and a liquid CO2 working medium supplementation system, wherein a CO2 circulating system comprises a first turbine, a second turbine, an electric generator and a first circulating pump; the outlet of a waste heat boiler is connected with the first turbine and the second turbine; the first turbine drives the electric generator to operate; the second turbine drives the first circulating pump to operate; the liquid CO2 working medium supplementation system comprises a liquid CO2 storage tank and a pressure pump; the outlet of the first turbine and the outlet of the second turbine are connected with a tube side inlet of a generator in the absorption refrigerating system; a second outlet of an evaporator is connected with the first circulating pump; the liquid CO2 storage tank is conveyed in a pipeline between a second outlet of the evaporator and the first circulating pump through the pressure pump; an outlet of the first circulating pump is connected with the waste heat boiler. The cycling power generation system is combined with the absorption refrigerating system to further reduce the condensing temperature and pressure of the CO2 working mediums and improve the acting capability of the working mediums in the turbines.

Description

technical field [0001] The invention relates to recovery of medium and low temperature waste water and waste heat of waste gas and power generation technology, specifically using carbon dioxide as a circulating working medium to recover the waste heat of medium and low temperature waste water and waste gas. Background technique [0002] For the recovery of a large number of medium and low temperature (200°C~600°C) waste heat resources generated in various industrial processes, if the traditional steam Rankine cycle system is used, there are problems such as difficult recovery, complex system, large floor area, and high investment cost. Other common medium and low temperature waste heat recovery technologies include Karina cycle and organic Rankine cycle. The Kalina cycle uses ammonia-water mixture as the circulating working fluid, which has special requirements on the properties of the contact surface between the pipe and the steam turbine, and the environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/10F01K27/00F25B15/00
CPCY02A30/27Y02B30/62
Inventor 谢建侯祥松杨俊
Owner CISDI ENG CO LTD
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