Pulverized coal combustion online detection control system and method

Abstract

The invention relates to a pulverized coal combustion online detection control system and method. The system comprises a Raman spectrometer, a Raman spectrum analyzer, a server, a coal blending controller and a combustor controller. The Raman spectrometer is used for generating to-be-blended coal Raman spectrum and to-be-combusted coal Raman spectrum. The Raman spectrum analyzer is used for analyzing the to-be-blended coal Raman spectrum to generate to-be-blended coal Raman spectrum characteristic parameters, and analyzing the to-be-combusted coal Raman spectrum to generate to-be-combusted coal Raman spectrum characteristic parameters. The server is used for generating blended coal control strategy information according to the to-be-blended coal Raman spectrum characteristic parameters soas to control the blended coal controller to adjust raw material blending, and used for generating combustor control strategy information according to the to-be-combusted coal Raman spectrum characteristic parameters to generate combustor control strategy information so as to control the combustor controller to adjust raw coal combustion. According to the technical scheme, coal quality characteristics and combustion characteristics of coal can be detected on line, coal blending and combustion are automatically controlled and adjusted, and coal combustion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of coal combustion control, in particular to an online detection and control system and method for pulverized coal combustion. Background technique [0002] At present, domestic power plants are mainly coal-fired power plants, and the efficiency and operation stability of coal-fired power plants are directly related to the coal quality characteristics and combustion characteristics of the coal burned. The combustion efficiency of boilers in coal-fired power plants is closely related to the combustion characteristics and combustion conditions of the coal burned. Generally, the adjustment of power plants is also adjusted from these two angles. On the one hand, the raw coal is mixed to make the combustion characteristics of the mixed coal closer to the combustion Coal type of coal boiler design. On the other hand, the adjustment of combustion can be achieved by changing the combustion conditions such as primar...

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Problems solved by technology

[0003] The coal quality characteristics of the incoming coal of the power plant usually adopt traditional elemental analysis and industrial analysis methods. Although the measured coal quality composition results are accurate, the test cycle is long, and it cannot be coupled with the intelligent control system to achieve online detection and control.

In addition, the accuracy of elemental analysis and industrial analysis parameters to predict the combustion characteristics of pulverized coal has certain limitations, and it is difficult to achieve accurate combustion regulation when directly applied to the control system

[0004] In addition, the characteristics of pulverized coal in the power plant before entering the furnace are generally directly assumed to be the coal quality characteristics after coal blending. In fact, there may be uneven coal blending in the process of coal blending, resulting in certain differences in the coal quality characteristics of the furnace coal. volatility

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