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A method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas composition monitoring

A technology for boiler combustion and boiler flue gas, which is used in data processing applications, instruments, calculations, etc.

Active Publication Date: 2019-06-04
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of technology, the ash content of coal has been monitored by online instruments, but how to realize the online analysis of elements in burning coal is still a difficult problem

Method used

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  • A method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas composition monitoring
  • A method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas composition monitoring
  • A method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas composition monitoring

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Embodiment Construction

[0054] The method of the present invention will be described in detail below through specific examples.

[0055] A method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas component monitoring, the steps are as follows:

[0056] (1) Monitor the flue gas composition at the entrance of the air preheater, measure the volume percentage concentration of oxygen, carbon dioxide, sulfur dioxide and water in the flue gas, and express it in turn with VpO2, VpCO2, VpSO2, VpH2O, and press formula (1) Calculate the nitrogen percentage concentration VpN2 in the flue gas;

[0057]VpN2=100%-VpO2-VpCO2-VpSO2-VpH2O (1)

[0058] A certain unit adopts out-of-furnace desulfurization, soot blowing stops during normal operation. The data of on-site flue gas composition are as follows:

[0059] O2,％

[0060] The ash data measured by the coal ash online instrument on site is 21%.

[0061] (2) Assuming the sulfur content MpSF in coal combustion, MpCb is c...

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Abstract

The invention discloses a method for analyzing the coal quality for boiler combustion based on monitoring of smoke compositions of a boiler. The concentration analysis data based on the smoke compositions in the entry of an air pre-heater comprises oxygen amount, sulfur dioxide, carbon dioxide, moisture and nitrogen. Combined with the ash data of the on-site coal quality for boiler combustion, by means of a specific calculating method and steps, the composition of each element for the burning coal quality during the normal operation can be determined and the problem that how to accurately monitor the coal quality for boiler combustion during the normal operation can be solved. The monitoring method provided by the invention is simple and convenient, and provides a possible selection for monitoring the coal quality for boiler combustion accurately for a power plant.

Description

technical field [0001] The invention relates to a method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas component monitoring. Background technique [0002] The monitoring of boiler combustion coal quality can provide a basis for predicting the calorific value of coal combustion quality in power plants. With the development of technology, the ash content of coal has been monitored by online instruments, but how to realize the online analysis of elements in combustion coal is still a difficult problem. [0003] Therefore, there is an urgent need for an on-line analysis method based on field measurement data to solve the current problem. Contents of the invention [0004] The object of the present invention is to provide a method for monitoring and analyzing boiler combustion coal quality based on boiler flue gas composition monitoring based on the above technical status. [0005] The present invention adopts following technical scheme:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 杨海生
Owner STATE GRID CORP OF CHINA
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