On-line Calculation Method of Raw Coal Moisture in Medium Speed ​​Coal Mill

A coal mill and moisture technology, which is applied in the fields of material moisture content, molecular entity identification, chemical process analysis/design, etc., can solve problems such as incomplete coal quality data methods for furnace coal

Active Publication Date: 2022-04-08
广东红海湾发电有限公司 +1
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Problems solved by technology

[0004] Based on this, it is necessary to provide an online method for calculating the moisture content of raw coal in medium-speed coal mills for the technical problems of online measurement or identification of coal quality data in real time.

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  • On-line Calculation Method of Raw Coal Moisture in Medium Speed ​​Coal Mill
  • On-line Calculation Method of Raw Coal Moisture in Medium Speed ​​Coal Mill
  • On-line Calculation Method of Raw Coal Moisture in Medium Speed ​​Coal Mill

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Embodiment Construction

[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] see figure 1 , the present invention provides a method 10 for online calculation of raw coal moisture in a medium-speed coal mill, calculating the moisture Mar of raw coal through heat balance, and the method 10 for online calculation of raw coal moisture in a medium-speed coal mil...

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Abstract

The invention discloses an online method for calculating the moisture content of raw coal in a medium-speed coal mill, which includes calculating the moisture content of coal powder; calculating the sealing air flow rate; calculating the amount of pebble coal; calculating the thermal insulation coefficient of the medium-speed coal mill; Calculate the heat absorbed by the raw coal and the sealed air; Calculate the heat taken away by the pebble coal; Substitute each data into the heat balance equation; Set up a comparison test to check the moisture content of the raw coal; Change the coal type and repeat the comparison test until you get stable parameter values. The method for online calculation of the raw coal moisture in the medium-speed coal mill is to sample and test the grinding product of the medium-speed coal mill, calculate the moisture of the raw coal through the heat balance equation, and set up multiple comparison tests to verify, which reduces the calculation error of the raw coal moisture. It is beneficial to make an accurate judgment on the coal type, to reasonably control the outlet temperature of the coal mill, and adjust the boiler operating parameters to the optimal value, thereby improving the thermal energy conversion rate of the raw coal.

Description

technical field [0001] The invention relates to the technical field of thermal detection, in particular to a method for online calculation of raw coal moisture in a medium-speed coal mill. Background technique [0002] Thermal power generation is a power generation method in which the heat generated by the combustion of raw coal is used to heat the water in the boiler, and the boiler water is heated and evaporated into water vapor to drive the generator to obtain electrical energy. my country has abundant raw coal reserves, and domestic and industrial electricity mainly comes from thermal power generation. It can be said that coal has long affected people's way of life. The coal quality of raw coal determines the combustion rate and thermal energy conversion rate of raw coal. Therefore, monitoring the coal quality of raw coal is conducive to improving the utilization rate of raw coal and reducing electricity costs. At present, the coal quality status is mainly evaluated by ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/56G16C20/10G16C20/20
CPCG01N25/56G16C20/20G16C20/10
Inventor 颜祝明沈跃良蒋健袁宏伟左正涛胡文平李怀强吴健林艺展戴锡辉熊辉杜黎宾石小磊
Owner 广东红海湾发电有限公司
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