Environmental-protection coal blending method

Abstract

The embodiment of the invention discloses an environmental-protection coal blending method, and the method achieves the environmental-protection blending combustion control of the sulfur content of fire coal, and achieves the safe and economical operation of a set. The method comprises the steps: selecting a target coal-blending combustion ratio scheme based on target work conditions, wherein the target coal-blending combustion ratio scheme meets a coal limit condition and is the lowest in cost; calculating the current fire coal comprehensive parameters according to the target coal-blending combustion ratio scheme, and detecting whether the current discharge value of sulfur dioxide of the fire coal exceeds a preset threshold value or not, wherein the fire coal comprehensive parameters comprise a fire coal comprehensive sulfur content, a fire coal comprehensive heat value and a fire coal comprehensive volatile component; adjusting the target coal-blending combustion ratio scheme to reduce the fire coal comprehensive sulfur content if the current discharge value of sulfur dioxide of the fire coal exceeds the preset threshold value, so as to enable the discharge value of sulfur dioxide of the fire coal not to be greater than the preset threshold value, and enable the variation of the fire coal comprehensive heat value and the variation of the fire coal comprehensive volatile component to be respectively within a preset range.

Description

technical field [0001] The invention relates to the technical field of coal power, in particular to an environment-friendly coal blending method. Background technique [0002] Thermal power generation is the main force of electric power development in modern society. Under the background of developing circular economy, in order to respond to the environmental protection development and harmonious society proposed by the government, thermal power plants across the country need to carry out ultra-clean emission transformation. Among them, the emission of sulfur dioxide is reduced from the original thermal The power plant emission standard GB-13223-2011 is less than 50 mg / m3, which is changed to less than 35 mg / m3 in the ultra-clean emission standard. Therefore, the improvement of thermal power technology needs to focus on the impact of electricity on the environment. [0003] Generally speaking, because the coal supply of thermal power plants is affected by many factors, such ...

AI Technical Summary

Problems solved by technology

However, coal blending is mostly high-quality coal blended with low-quality coal, especially high-sulfur coal. However, in the actual blending process, there is no measurement target or quantitative data for the blending of high-sulfur coal Co-combustion of high-sulfur coal may lead to excessive sulfur dioxide emissions, which is not conducive to environmental protection

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