A full-cycle inert milling system fine explosion-proof system
A technology of milling system and explosion-proof system, applied in grain processing and other directions, can solve problems such as large construction space and large renovation projects, and achieve the effect of ensuring safe combustion and eliminating the risk of deflagration
Inactive Publication Date: 2018-04-17
河南省锅炉压力容器安全检测研究院
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Problems solved by technology
However, no matter what kind of transformation plan, the transformation project is relatively large, requiring a large construction space
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0018] Such as figure 1 As shown, a fine explosion-proof system of a pulverizing system with full-cycle inertization includes a pressure swing adsorption nitrogen generator 1, and the pressure swing adsorption nitrogen generator 1 is connected with a nitrogen chamber 2 and an oxygen chamber 3 through an air compressor. The oxygen chamber 2 is connected to the burner 12 through the oxygen channel, the oxygen channel is connected to the air powder pipeline, and the oxygen channel is provided with an oxygen channel valve 11, and the oxygen is mixed with the air powder before combustion, which can ensure the safety of the coal powder in the area of the burner 12 Combustion; the nitrogen chamber 2 is connected to the potential deflagration area through the nitrogen channel, and the nitrogen channel is provided with a nitrogen channel valve 10 in each potential d...
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The invention discloses a fine explosion-proof system for a pulverizing system with full-cycle inertization, which includes a pressure swing adsorption nitrogen generator connected with a nitrogen chamber and an oxygen chamber, and the oxygen chamber communicates with the combustion chamber through an oxygen passage The oxygen channel is connected with the air powder pipeline, and the oxygen channel valve is set on the oxygen channel; the nitrogen chamber is connected with the potential deflagration area through the nitrogen channel, and the nitrogen channel is provided with a nitrogen channel valve in each potential deflagration area, and each potential deflagration area is set separately. The temperature sensor, the oxygen passage valve, the nitrogen passage valve and the temperature sensor are respectively connected with the valve controller. The temperature sensors installed in all potential deflagration areas of the pulverizing system transmit the temperature signal to the valve controller. When the temperature exceeds the normal threshold, the nitrogen channel valve at the corresponding position is touched to accurately send nitrogen to the deflagration dangerous area to achieve the purpose of fine explosion protection. Oxygen is mixed with primary air powder in front of the burner to ensure the safe combustion of pulverized coal.
Description
technical field [0001] The invention belongs to the safety field of large-scale power plant boilers, and in particular relates to a fine explosion-proof system for a full-cycle inerting pulverizing system. Background technique [0002] In recent years, with the large-scale mining of bituminous coal and lignite resources in my country, in order to reduce the cost of coal procurement and adapt to changes in the coal market, various power plants are maximizing the blending of high-volatile bituminous coal and lignite, which is very important for improving fuel consumption. It is of great significance to reduce the cost of power generation and improve the economic efficiency of power plants in the tight supply situation. At the same time, safety issues such as the explosion of the pulverizing system caused by high volatile coals in the pulverizing process have also attracted more and more attention. [0003] The utility model patent with application number 201120238795.1 disclos...
Claims
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IPC IPC(8): B02C23/04
CPCB02C23/04
Inventor 李文广张兰王学斌刘原一张占奎谭厚章郭朝令李占斌崔晓威韩保生刘群安
Owner 河南省锅炉压力容器安全检测研究院