Coal-fired electricity generation-CO2 capture-heat supply integrating system and method
A CO2, coal-fired power plant technology, applied in heating systems, chemical instruments and methods, hot water central heating systems, etc., can solve problems that do not involve the rational utilization of low-temperature waste heat, and achieve reasonable and efficient utilization and high comprehensive energy utilization. Efficiency and techno-economic performance, the effect of reducing energy consumption and CO2 emissions
Inactive Publication Date: 2012-01-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
However, this invention does not involve the rational utilization of the large amount of low-temperature waste heat released by the capture system
In addition, in the relevant invention patents, there are no reports on the integration of heating systems and decarbonization processes
Method used
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Embodiment 1
[0030] A typical 600MW coal-fired power plant in China was selected as the reference object, and monoethanolamine (MEA) was selected as the CO 2 Capture chemical absorbent; where Table 1 gives the parameters of a typical 600MW power plant.
[0031] Table 1 Parameters of a typical 600MW coal-fired power plant in China
[0032]
[0033]
[0034] Table 2 presents the coal-fired power generation-CO 2 CO capture-heat integration scheme (i.e. basic scheme) 2Capture system performance, . It is assumed that the power plant burns the design coal, and the boiler works under the rated conditions, and at the same time in the calculation of the present invention, it is assumed that the designed new CO 2 The capture thermal power plant has the same coal feed as the reference typical 600MW coal-fired power plant in China.
[0035] Table 2 CO2 capture system parameters
[0036]
[0037] The cooling release heat of the poor liquid MEA in the capture system is used as the heat sou...
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The invention discloses a coal-fired electricity generation-CO2 capture-heat supply integrating method, belonging to the field of energy saving and emission reduction. The system mainly comprises three large parts which are a steam electricity generating subsystem, a CO2 capture unit and a heat supply subsystem. The three subsystems are communicated with other another by mainly using an interviewing heat exchanger, a low-temperature heater, a 45th valve and a 46th valve to form the coal-fired electricity generation-CO2 capture-heat supply integrating system. An electricity plant vapor water flow, a CO2 capture flow and a heat-supply system are reasonably integrated in the coal-fired electricity generation-CO2 capture-heat supply integrating system for the first time so that the energy consumption for the CO2 capture is substantially reduced and the cascade utilization of energy is realized; the coal-fired electricity generation-CO2 capture-heat supply integrating system has the advantages of being capable of effectively reducing the energy consumption for discharging carbon and the CO2 discharging, restraining the reduction of electricity generating efficiency caused by the carbon emission reduction, meanwhile obtaining a higher utilization ratio of comprehensive energy and technical economy performance. The invention provides an important technical support for carbon emission reduction of a combined heat and electricity machine unit.
Description
technical field [0001] The invention belongs to the field of energy saving and emission reduction, in particular to a coal-fired power generation-CO 2 Integrated capture-heating systems and methods; in particular, relating to the capture of CO from post-combustion boiler exhaust in coal-fired power plants 2 , The power generation system that recovers steam and water for heating, realizes the multi-level utilization of energy, and effectively suppresses CO 2 emissions while meeting heating needs. Background technique [0002] Today, with CO 2 The global climate change caused by the large amount of greenhouse gas emissions is one of the most serious problems facing mankind and needs to be solved urgently. CO 2 It mainly comes from the combustion of fossil fuels. In my country, the CO in the power industry (mainly a large number of coal-fired power plants) 2 Emissions account for the country's CO 2 40-50% of the total emissions, so for the CO of coal-fired power plants 2...
Claims
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IPC IPC(8): F01D15/10F01K11/02C01B31/20F24D3/02F24D3/12C01B32/50
CPCY02A50/20Y02P20/10Y02P20/129
Inventor 徐钢杨勇平刘彤李守成刘文毅
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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