Power generation and heat supply system for gradient utilization of industrial waste heat and working method of power generation and heat supply system
An industrial waste heat and heating system technology, applied in heating systems, hot water central heating systems, household heating, etc., can solve the problem of lower energy quality, low return on investment in daily heating, limited utilization of high-temperature industrial waste heat sources, etc. Problems, achieve the effect of improving grade and improving utilization efficiency
Pending Publication Date: 2022-03-11
HUANENG YINGKOU THERMAL POWER CO LTD +1
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Problems solved by technology
[0003] High-temperature industrial waste heat sources above 600°C have higher requirements on material reliability and cost of equipment due to their high temperature, and the return on investment for direct use in daily heating is low
Direct use for daily heating has limited utilization of high-temperature industrial waste heat sources, and heat transfer with large temperature differences causes a significant reduction in energy quality
Method used
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[0025] The present invention is described in further detail below in conjunction with accompanying drawing:
[0026] Such as figure 1 As shown, the power generation and heat supply system for cascade utilization of industrial waste heat in the present invention includes a high-temperature industrial waste heat source 1, a high-temperature heat collector 2, a generator 3, a carbon dioxide turbine 4, a carbon dioxide regenerator 5, a carbon dioxide cooler 6, and a carbon dioxide Compressor 7 , condenser 8 , evaporator 9 , absorber 10 , solution heat exchanger 11 , expansion valve 12 , solution pump 13 and low temperature industrial waste heat source 14 .
[0027] The outlet of high-temperature industrial waste heat source 1 is connected to the inlet of high-temperature heat collector 2, the outlet of high-temperature heat collector 2 is connected to the inlet of generator 3, and the outlet of generator 3 is connected to the inlet of high-temperature industrial waste heat source ...
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The invention discloses a power generation and heat supply system for gradient utilization of industrial waste heat and a working method of the power generation and heat supply system. The power generation and heat supply system comprises a high-temperature industrial waste heat source, a high-temperature heat collector, a carbon dioxide turbine, a cooling device and an absorption heat pump. A high-temperature industrial waste heat source outlet is connected with a hot end inlet of the high-temperature heat collector, a hot end outlet of the high-temperature heat collector is connected with a heat source inlet of the absorption heat pump, and a heat source outlet of the absorption heat pump is connected with a high-temperature industrial waste heat source inlet. A cold end outlet of the high-temperature cooler is connected with a carbon dioxide turbine inlet, a carbon dioxide turbine outlet is connected with a cooling device inlet, and a cooling device outlet is connected with a cold end inlet of the high-temperature cooler; and the cold end of the high-temperature heat collector is filled with supercritical carbon dioxide. And gradient recycling of high-grade industrial waste heat power generation and heat supply at the temperature of 600 DEG C or above is achieved.
Description
technical field [0001] The invention belongs to the field of industrial waste heat reuse, and relates to a power generation and heat supply system for cascaded utilization of industrial waste heat and a working method thereof. Background technique [0002] At present, industrial waste heat is mostly used for daily heating, such as high-temperature steel slag waste heat in large steel plants. The temperature of the steel slag coming out of the converter reaches above 1300°C, and it becomes 800-900°C through natural heat dissipation before being transferred to the slag pit. Water is sprayed in the steel slag pit to cool down, and the heat is taken away by the generated steam and slag flushing water, and the slag flushing water It can be used for daily residential heating. [0003] High-temperature industrial waste heat sources above 600°C have higher requirements on material reliability and cost of equipment due to their higher temperature, and the return on investment for di...
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IPC IPC(8): F01K25/10F24D3/10F24D3/18F25B30/04F25B30/06F25B41/31
CPCF01K25/103F24D3/10F24D3/18F25B30/04F25B30/06F25B41/31
Inventor 徐世明蔡浩飞商忠宝彭烁金彦斌周贤姚国鹏安航白烨王会
Owner HUANENG YINGKOU THERMAL POWER CO LTD