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Inside and outside burning coal integrative combined cycle generation system and method

A combined cycle power generation and coal-fired technology, applied in steam generation, steam generation devices, gas turbine devices, etc., can solve the major environmental problems without considering the control of CO, limited efficiency improvement, low power generation efficiency, etc., to achieve superior environmental protection, The effect of saving compression power consumption and good economy

Inactive Publication Date: 2009-06-24
中科思道(南京)储能技术有限公司
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Problems solved by technology

[0022] The purpose of the present invention is to overcome the steam Rankine cycle that the vast majority of current coal-fired power generation devices use, the power generation efficiency is not high, the problem of environmental pollution is more serious, and the clean coal power generation technology (such as IGCC power generation technology and PFBCC power generation technology under development) Technology) Although the performance has been improved, there are problems such as high investment cost, high technical difficulty, limited efficiency improvement, and no consideration of controlling CO 2 major environmental issues of emissions; and provide an integrated internal and external coal-fired combined cycle power generation system

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  • Inside and outside burning coal integrative combined cycle generation system and method
  • Inside and outside burning coal integrative combined cycle generation system and method
  • Inside and outside burning coal integrative combined cycle generation system and method

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[0053] specific implementation

[0054] The T-s figure of new cycle of the present invention sees figure 1 (points in the figure and image 3 corresponding to the logistics serial number). The heat absorption process is divided into two stages: 24-38 is heating by external combustion (including the heating of water vapor by semi-coke combustion and the heating of water vapor by high-temperature gas), and 18-17 is heating by internal combustion; the work process is divided into three stages. Sections: 38-23 are high-pressure steam turbines, 17-20 are high-temperature gas turbines (steam and CO 2 mixed working fluid), 21-26 are cryogenic gas turbines (steam and CO 2 Mixed working fluid); the exothermic process is 26-27; the temperature rise of the feed water pressurization process is low, and it is 27 points and 36 points in the figure; the process 27-36, 36-24, 23-18 is the feed water reheating ( The heat source is low-temperature gas turbine pumping), feed water preheating...

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Abstract

The invention relates to an internal and external coal-fired integrated combined cycle power generation system and a power generation method. The power generation system includes a coal gasification subsystem, a power cycle subsystem and a carbon dioxide recovery subsystem; The section is heated by external combustion, using the energy of semi-coke obtained from partial coal gasification; the high-temperature section is heated by internal combustion, using the energy of coal gas obtained from partial coal gasification; because the present invention adopts the internal combustion method, the initial temperature of the cycle can reach The initial temperature level of modern gas turbines; use the heat of the external combustion process to convert high-pressure water into high-pressure steam, and do not use a compressor to increase the pressure of the working medium in the cycle, thereby saving the power consumption of the working medium; the working medium of the turbine The main component is water vapor, the exhaust pressure is very low, and the cycle pressure ratio is high; carbon dioxide is automatically separated during the exothermic condensation process of the turbine exhaust; the power generation system has the advantages of high thermal efficiency, advanced environmental protection performance and good economy.

Description

technical field [0001] The invention relates to a new power generation system and method which organically combines the internal and external coal-fired technology based on coal partial gasification with an integrated combined cycle and can effectively separate carbon dioxide. Background technique [0002] At present, the systems and technologies related to the present invention mainly include: coal-fired combined cycle power generation system, CO 2 Separation technology and high initial temperature steam cycle, etc., the development status and characteristics of their respective technologies are as follows. [0003] 1. Coal-fired combined cycle power generation system (CFCC) [0004] At present, coal-fired combined cycle power generation systems mainly include: integrated gasification combined cycle power generation system (IGCC), pressurized fluidized bed coal-fired combined cycle power generation system (PFBCC) and coal partial gasification fluidized bed combustion combi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C1/10F22B33/18F22G1/02F01K25/00
Inventor 邓世敏金红光林汝谋蔡睿贤
Owner 中科思道(南京)储能技术有限公司
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