Method for detecting granularity and particle size distribution of coal as fired
A particle size distribution, coal particle technology, applied in the direction of particle size analysis, particle and sedimentation analysis, measuring devices, etc., can solve the problem that the coal entering the furnace cannot be detected online, and achieve the effect of improving combustion efficiency
Active Publication Date: 2021-08-03
DATANG ENVIRONMENT IND GRP +1
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Problems solved by technology
[0010] The present invention proposes a method for detecting the particle size and particle size distribution of the furnace coal, which solves the problem that the furnace coal cannot be detected online in the prior art
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0049] Such as figure 1 As shown, this embodiment provides a method for detecting the particle size and particle size distribution of furnace coal, which includes the following steps:
[0050] Sampling part of the incoming coal to the detection channel;
[0051] The coal entering the furnace is divided into multiple grades according to the particle size during the circulation process in the detection channel;
[0052] The particle size and particle ...
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Abstract
The invention relates to the field of fire coal detection of thermal power plants, in particular to a method for detecting granularity and particle size distribution of coal as fired. The method for detecting the granularity and the particle size distribution of the coal as fired comprises the following steps: sampling and shunting part of the coal as fired to a detection channel; dividing coal as fired into a plurality of grades according to different particle sizes in the circulating process in the detection channel; detecting the granularity and the particle size distribution of the coal as fired at each grade; and transmitting a detection result to the analyzer control station. According to the method, as-fired coal flow beams are divided into different grades in the detection channel, then the coal flow beams of all the grades are detected, and the granularity and particle size distribution of as-fired coal can be obtained according to the detection result. Operating personnel can adjust the boiler in a targeted mode in time, it is ensured that the boiler operates under the optimal working condition, and the combustion efficiency of the boiler is improved.
Description
technical field [0001] The invention relates to the field of coal detection in thermal power plants, in particular to a method for detecting the particle size and particle size distribution of furnace coal. Background technique [0002] The large-scale circulating fluidized bed boiler (CFB) in coal-fired power plants has the advantages of high efficiency, low pollution, adaptability to various fuels, good load regulation performance and strong comprehensive availability of ash and slag. However, the CFB boiler also puts forward strict requirements on the particle size and particle gradation of the fuel fed into the furnace. Efficiency is greatly affected. [0003] The basic requirements for the operation of circulating fluidized bed boilers are that the distribution of the dilute phase area and the dense phase area when the bed material boils is normal, and the bed temperature is kept stable. Therefore, the particle size of the coal entering the furnace must be guaranteed, ...
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IPC IPC(8): G01N15/02
CPCG01N15/0205
Inventor 赵国庆隗永涛杨泽利杨学鹏陈婷王艳春蔡勇雁尹伟辰于洋刘忠秋
Owner DATANG ENVIRONMENT IND GRP