Method for monitoring layering interfaces of multiple coal ranks in raw coal bunker

A raw coal bunker and multi-type coal technology, applied in combustion methods, analytical materials, measuring devices, etc., can solve problems such as the inability to adjust and operate coal feeders and coal mills, and the difficulty of visually defining the distribution of raw coal bunker coal types. Achieve the effect of reducing safety accidents and improving economic benefits

Inactive Publication Date: 2011-11-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when there are multiple coal types, it is difficult to intuitively define the current coal type distribution in the raw coal bunker, which makes it impossible to make corresponding adjustments and operations on the coal feeder and coal mill during operation

Method used

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  • Method for monitoring layering interfaces of multiple coal ranks in raw coal bunker
  • Method for monitoring layering interfaces of multiple coal ranks in raw coal bunker
  • Method for monitoring layering interfaces of multiple coal ranks in raw coal bunker

Examples

Experimental program
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Effect test

example

[0032] (1) Add measuring points to the output of the coal feeder and the height of the coal level of the raw coal bunker to measure the real-time output P of the coal feeder and the height H of the coal level in real time;

[0033] (2) Before monitoring, the raw coal bunkers with different heights H i (i=1, 2, 3...) and residual mass M i (i=1, 2, 3...) correspond to each other to establish a table corresponding to the coal quality and coal position. The following table: (unit: height: meters, mass: tons)

[0034] high

quality

high

quality

high

quality

high

quality

14.067

455.2266

11.513

326.9499

7.929

108.68

4.115

13.03437

13.834

447.5751

11.112

301.6129

7.502

92.09894

3.645

10.0951

13.469

432.2966

10.821

280.0342

7.098

81.31562

...

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Abstract

The invention discloses a method for monitoring layering interfaces of multiple coal ranks in a raw coal bunker. In the method, the coal position and quality correspondence of the raw coal bunker is obtained through field tests; the coal position in the raw coal bunker and the output of a coal feeder are monitored; and the quality of coal entering the raw coal bunker and the coal supply of the coal feeder are respectively calculated, and the process is carried out in real time, so the information of various layers of coal ranks in the raw coal bunker, such as quality, coal position and the like is acquired, and the layering conditions of the coal ranks in the raw coal bunker are monitored. On the premise of not needing to arrange a complicated and precious on-line coal quality analyzing instrument, the method realizes the monitoring of the layering of the coal ranks in the raw coal bunker and the currently combusting coal rank, and has the function of predicting the replacement of thecombusting coal rank.

Description

technical field [0001] The invention belongs to the technical field of production monitoring of a thermal power plant, and in particular relates to a method for monitoring the layered interface of coal types when multiple coal types are blended in a coal bunker in a thermal power plant. Background technique [0002] my country is a country where coal is the main energy source, and coal resources occupy an important position in my country's primary energy composition. my country's coal-based energy production and consumption structure will not change fundamentally for a long time to come. Therefore, thermal power will still be the main energy source for a long time to come. However, thermal power plants are affected by my country's limited coal resources, uneven distribution, low coal washing rate, rising prices, increased transportation pressure for enterprises, the supply situation of the coal market, and the state's policy on using low-quality coal as much as possible for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N1/00G01F23/20G01N5/00
Inventor 陈刚高伟张洪刚胡平凡谢江颜祝明杨涛丁宏刚夏季彭鹏张成黄树红
Owner HUAZHONG UNIV OF SCI & TECH
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