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Method for acquiring combustion characteristics under different loads after boiler improvement

A technology for combustion characteristics and boiler transformation, which is applied in the field of coal-fired boilers to achieve the effect of ensuring effectiveness, good agreement and high accuracy

Active Publication Date: 2014-08-06
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Inventors have developed an improved process called modifying combustions during heat generation (combustor) systems used at power plants or other industrial facilities that improve their efficiency over time without adding extra materials like sulfur dioxide gas into exhaust gases from these processes. By doing this they aimed to provide more accurate data related to fuel consumption rates and NOX emissions levels within specific ranges. These improvements resulted in better performance control and reduced environmental concerns associated therewith.

Problems solved by technology

This patented technology describes how nitric oxides (NO2) emitted by burning fossil fuels contribute significantly towards air pollution caused by these gases released into our atmosphere today due to their harmful effects upon human health. Current methods have limitations when simulating this phenomenon or evaluating its impact over time.

Method used

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  • Method for acquiring combustion characteristics under different loads after boiler improvement
  • Method for acquiring combustion characteristics under different loads after boiler improvement
  • Method for acquiring combustion characteristics under different loads after boiler improvement

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] In this embodiment, the following modified boilers are used as simulation calculation objects, and a method for obtaining combustion characteristics under different loads after the modification of the boiler is implemented.

[0049] The boiler is 660MW, subcritical pressure, once reheated, single steam drum, control cycle, four-corner injection combustion double tangential combustion coal-fired boiler, the boiler body is as follows figure 1 shown. The open-air layout is adopted, and the boiler is a product of ABB-CE company. The combustion pulverizing system is a medium-speed grinding direct blowing type, and a straight-line wide adjustment ratio swing burner is used. The cross section of the burner is as follows: figure 2 shown. Four DC swing burners are arranged at the four corners of the boiler in a tangential combustion manner....

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Abstract

The invention discloses a method for acquiring combustion characteristics under different loads after boiler improvement and belongs to the technical field of coal-fired boilers. The method comprises the steps of performing mesh generation on an improved corner tangential firing boiler with SOFA increased, establishing a structural mesh model of the boiler and acquiring a combustor parameter, a boundary condition parameter and a coal dust parameter of the boiler; establishing a mathematical model, and performing combustion analog computation to obtain combustion characteristics of the boiler under different loads. By means of the method, combustion conditions in the boiler can reproduce accurately, comprehensive information of combustion conditions in the boiler can be acquired, guidance is provided for low nitrogen transformation in increasing SOFA of the boiler, and comprehensive evaluation is performed on effect after low nitrogen transformation is performed on the boiler.

Description

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Claims

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Application Information

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Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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