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Method and system for predicting NOx emissions from pulverized coal boilers

A technology of pulverized coal boiler and prediction model, which is applied in prediction, instrument, data processing application and other directions, can solve the problems of low accuracy of results and expensive experiment, and achieves the effect of high accuracy and saving the expense of experiment device.

Active Publication Date: 2016-08-17
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
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Problems solved by technology

The disadvantage of this method is that the accuracy of the results is low and the test is expensive

Method used

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  • Method and system for predicting NOx emissions from pulverized coal boilers
  • Method and system for predicting NOx emissions from pulverized coal boilers
  • Method and system for predicting NOx emissions from pulverized coal boilers

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Embodiment Construction

[0020] The present invention takes a certain power plant boiler as the research object, through numerical simulation of its combustion process and its temperature field, component field (including CO, O 2 ) and NOx emissions, and based on the thermal experimental data, to verify the accuracy of the numerical simulation, and put forward corresponding methods to reduce NOx emissions. Specifically, the following work was done.

[0021] 1. The model and method of FLUENT software used for numerical simulation in the furnace are analyzed in detail.

[0022] 2. The most important factor for the success of numerical simulation is the grid division. Through experiments, the influence of various grid divisions including unstructured grid and structured grid on the results of numerical simulation is analyzed, and finally a method that is consistent with the actual situation is determined. The best mesh division is used as the basis for numerical calculations.

[0023] 3. Perform necess...

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Abstract

The invention discloses a method and system for predicating NOx emission of a pulverized coal boiler. According to the method and system for predicating the NOx emission of the pulverized coal boiler, a model of the actual pulverized coal boiler is established, meshing is carried out on the model, the combustion process of the boiler is simulated by means of FLUENT software, the concentration of NOx is solved, and then the degree of environment pollution is learned. The method and system for predicating the NOx emission of the pulverized coal boiler has the advantages that a test is not needed to be conducted, cost of testing apparatus is saved, and compared with a traditional test method, the method is more flexible and higher in accuracy.

Description

technical field [0001] The invention relates to the technical field of boiler power generation, in particular to a method and system for predicting NOx emissions from pulverized coal boilers. Background technique [0002] Coal in pulverized coal boilers will pollute the environment in the form of dust, sulfur dioxide, nitrogen oxides, carbon dioxide, and ash while supplying energy. With the rapid increase of industrial coal consumption in our country, the environmental pollution caused by coal combustion is also becoming more and more serious. Environmental pollution has become a restrictive factor for the development of my country's electric power industry. Not only that, it also caused serious social pollution problems, such as the formation of acid rain. [0003] The above-mentioned environmental pollution is mainly the emission of nitrogen oxides, namely NOx, and the measurement of NOx is related to the treatment of the environmental pollution of pulverized coal boilers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
Inventor 李德波
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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