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Supercritical Carbon Dioxide Brayton and Organic Rankine Combined Cycle Thermal Power Generation System

A Brayton cycle, carbon dioxide technology, applied in indirect carbon dioxide emission reduction, machine/engine, combined combustion mitigation, etc., can solve the problem of inability to ensure the safe operation of the air preheater in the carbon dioxide boiler and the inability to effectively use the exhaust gas waste heat of the turbine and other issues to achieve the effect of reducing temperature, ensuring safe operation and improving thermal efficiency

Active Publication Date: 2018-06-22
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, according to research, there are very few domestic and foreign published achievements and patents on the combined cycle thermal power generation system based on the supercritical carbon dioxide Brayton cycle. The problem of cascade utilization of gas heat, at the same time, the existing technology cannot guarantee the safe operation of the air preheater in the carbon dioxide boiler, and cannot effectively use the waste heat of the exhaust gas of the turbine in the supercritical carbon dioxide Brayton cycle power generation system

Method used

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  • Supercritical Carbon Dioxide Brayton and Organic Rankine Combined Cycle Thermal Power Generation System

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Embodiment Construction

[0019] The present invention is described in further detail below in conjunction with accompanying drawing:

[0020] refer to figure 1 , the supercritical carbon dioxide Brayton and organic Rankine combined cycle thermal power generation system described in the present invention comprises a waste heat exchanger 6, a low-temperature economizer 34, a supercritical carbon dioxide Brayton cycle power generation system and an organic Rankine cycle system; a superheater 33 is located in the tail flue of boiler 3 in the supercritical carbon dioxide Brayton cycle power generation system, and the low-temperature economizer 34 is located between the economizer 31 and the air preheater 35 in the supercritical carbon dioxide Brayton cycle power generation system. The inlet of the device 34 is connected with the outlet of the compressor 1 in the supercritical carbon dioxide Brayton cycle power generation system, and the outlet of the low-temperature economizer 34 is connected with the inle...

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Abstract

The invention discloses a supercritical carbon dioxide Bretton and organic Rankine combined cycle thermal power generation system. The system comprises an afterheat heat exchanger, a low-temperature coal economizer, a supercritical carbon dioxide Bretton cycle power generation system and an organic Rankine cycle system. The system can realize combined power generation of the supercritical carbon dioxide Bretton cycle power generation system and the organic Rankine cycle system, can realize gradient utilization of boiler smoke heat in the supercritical carbon dioxide Bretton cycle power generation system, guarantees safe operation of an air preheater, and can effectively use afterheat of turbine exhaust gas in the supercritical carbon dioxide Bretton cycle power generation system.

Description

technical field [0001] The invention belongs to the field of supercritical carbon dioxide high-efficiency thermal power generation, and relates to a supercritical carbon dioxide Brayton and organic Rankine combined cycle thermal power generation system. Background technique [0002] The efficiency of generating units has an important impact on the development of the national economy and environmental protection. The composition characteristics of my country's energy reserves determine that thermal power generating units will still be the main force in my country's power industry in the next few decades. Therefore, improving the efficiency of thermal generating units It is particularly important in our country. [0003] Improving the steam parameters of the supercritical unit can effectively improve the efficiency of the thermal power generation system. Increasing the main steam parameter to 700°C can increase the power generation efficiency of the steam Rankine cycle unit to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22G1/04F23L15/00F23J15/02F22D1/00F01K7/32F01K17/00F01K25/08F01D15/10
CPCF01D15/10F01K7/32F01K17/00F01K25/08F22D1/00F22G1/04F23J15/02F23J2215/10F23L15/00Y02E20/14Y02E20/34
Inventor 张一帆李红智王月明姚明宇高炜吴帅帅
Owner XIAN THERMAL POWER RES INST CO LTD
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