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On-line soft measurement method for coal quality fluctuation state

A soft measurement, state technology, applied in data processing applications, instruments, calculations, etc., can solve the problem that the representativeness of the sample cannot be guaranteed, and the real-time online analysis of coal composition cannot be

Inactive Publication Date: 2016-12-21
JIANGSU FRONTIER ELECTRIC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First of all, since the raw coal sampling process is a random process, the representativeness of the sample may not be guaranteed;
[0004] Secondly, since the raw coal testing process is carried out regularly every day, and the minimum period also needs 8 hours, it is impossible to analyze the coal quality composition online in real time, and there is a certain deviation in replacing the 8-hour average value with the daily regular test value

Method used

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  • On-line soft measurement method for coal quality fluctuation state
  • On-line soft measurement method for coal quality fluctuation state
  • On-line soft measurement method for coal quality fluctuation state

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Taking a 1000MW class unit as an example, the specific application process of the algorithm is introduced below:

[0078] The measured data of the unit are as follows:

[0079] superheated steam flow

Dgr

t / h

2887

Superheater outlet steam pressure

Pgr"

MPa

26.07

Superheater outlet steam temperature

Tgr"

℃

605

Steam enthalpy at outlet of superheater

hgr"

kJ / kg

3498.77

Reheat steam flow

Dzr

t / h

2339

Reheater outlet steam pressure

Pzr"

MPa

4.68

Reheater outlet steam temperature

Tzr"

℃

603

Reheater outlet steam enthalpy

hzr"

kJ / kg

3676.35

Reheater inlet steam pressure

Pzr'

MPa

4.93

Reheater inlet steam temperature

Tzr'

℃

351

Reheater inlet steam enthalpy

hzr'

kJ / kg

3073.67

Boiler feed water pressure

Pgs

MPa

29.51

boiler feed water temperature ...

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Abstract

The invention discloses an on-line soft measurement method for a coal quality fluctuation state. On the basis of real-time operation state monitoring data of a coal milling machine, on-line raw coal moisture calculation is carried out according to a heat balance principle, thereby realizing on-line evaluation on the drying capacity of the coal milling machine. Therefore, the accuracy and pertinence of operation staff and scheduling staff adjustment can be improved.

Description

technical field [0001] The invention relates to an online soft measurement method for coal quality fluctuation state, specifically a method for online calculation of raw coal moisture based on the real-time operation state monitoring data of a coal mill and using the heat balance principle. Background technique [0002] At present, for the coal quality state characteristic indicators such as raw coal moisture, it is mainly obtained by power plant operators who regularly sample and test the raw coal every 8 hours and every day. There are two shortcomings in the analysis results of this method: [0003] First of all, since the raw coal sampling process is a random process, the representativeness of the sample may not be guaranteed; [0004] Secondly, since the raw coal testing process is carried out regularly every day, and the minimum cycle also takes 8 hours, it is impossible to analyze the coal quality composition online in real time, and there is a certain deviation in rep...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/0639G06Q10/06311
Inventor 孙栓柱江叶峰周挺徐春雷杨梓俊代家元王林张友卫李杰周春蕾王明李春岩杨晨琛许国强周志兴余国金
Owner JIANGSU FRONTIER ELECTRIC TECH
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