Clean coal production system and clean coal production method
A production method and production system technology, applied in the field of coal chemical industry, can solve the problem of high investment in clean coal installations
Inactive Publication Date: 2018-08-17
CHINA SHENHUA ENERGY CO LTD
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a clean coal production system and production method to solve the problem of high investment in clean coal equipment in the prior art
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[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0028] As described in the background art, in the prior art, clean coal production needs to be equipped with an independent heat source and tail gas treatment device, resulting in high investment and energy consumption. However, due to the slowdown in national electricity demand in the past two years and the rapid growth of thermal power installed capacity, the utilization hours of thermal power have declined rapidly. In 2015, the average utilization hours of thermal power in the country was only 4,300 hours, and the load rate of thermal power plants was generally low. In addition, as the installed capacity of new energy increases, thermal power units, traditionally used as the main power suppl...
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The invention provides a clean coal production system and a clean coal production method. According to the clean coal production method, raw material coal is pyrolyzed by using at least part of high-temperature flue gas of a coal-fired power station boiler or a fuel-fired power station boiler as a pyrolysis heat source to obtain pyrolyzed oil gas and clean coal; medium-temperature flue gas is obtained after the pyrolysis heat exchange of the raw material coal with the high-temperature flue gas; and the high-temperature flue gas is directly taken from the furnace hearth high-temperature zone ofthe coal-fired power station boiler or the fuel-fired power station boiler, and the temperature T1 of the high-temperature flue gas is more than or equal to 900 DEG C. According to the present invention, with the system and the method, the high-temperature flue gas generated by the furnace hearth high-temperature zone of the coal-fired power station boiler or the fuel-fired power station boiler is used as the heat source for the raw material coal pyrolysis before the heat exchange with the boiler water, such that the raw material coal pyrolysis requirements can be met, and the high-temperature flue gas can be completely utilized so as to achieve the polygeneration of the power station and clean coal production.
Description
technical field [0001] The invention relates to the field of coal chemical industry, in particular to a clean coal production system and production method. Background technique [0002] Scattered burning of coal is one of the main causes of air pollution. Compared with coal-fired power stations, the quality of coal at the consumption end is poor and the control of pollutants is difficult. The use of coal graded refining technology can extract volatile matter in coal as high value-added products (tar and gas), while sulfur and volatile matter in coal are partially removed to obtain clean coal (semi-coke). Clean coal (semi-coke) obtained through the above means can significantly reduce pollutant emissions during combustion. Therefore, an organized supply of clean coal to the periphery of large cities to replace the original low-quality loose-fired coal is a solution to the pollution caused by coal burning in my country. valid path. However, the current mainstream graded refin...
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Login to View More IPC IPC(8): C10B53/04C10G1/00C10L5/04
CPCC10B53/04C10G1/00C10L5/04
Inventor 李井峰顾大钊赵永宏陈振龙杜万斗袁明董斌琦郝兴辉卓卉王丹妮曹志国张凯于瑞雪张勇
Owner CHINA SHENHUA ENERGY CO LTD