Power station boiler efficiency calculation method, blended coal combustion proportion optimization method and operation oxygen amount optimization method

Abstract

The invention discloses a power station boiler efficiency calculation method, a mixed coal combustion proportion optimization method and an operation oxygen amount optimization method. The boiler efficiency calculation method comprises the following steps: collecting industrial parameter indexes of a sample; calculating unknown parameters of the sample; calculating a judgment factor of the sample coal type; searching two upper limit judgment factors and two lower limit judgment factors which are closest to the judgment factors of the sample coal types; the flue gas is corrected, and the change rate of the corrected boiler efficiency is calculated; calculating the change rate of the boiler efficiency after the exhaust gas temperature is corrected; calculating the boiler efficiency after the exhaust gas temperature is corrected; obtaining a target filtering efficiency calculation result; setting a boundary condition 1; setting a boundary condition 2; and calculating a final calculation result of the target boiler efficiency. According to the power station boiler efficiency calculation method, a big data analysis model can be established, a bridge between coal quality industrial analysis and element analysis can be established, and barrier-free butt joint of industrial analysis and boiler efficiency calculation is achieved.

Description

technical field [0001] The invention relates to the performance testing of utility boilers and related technical fields, in particular to a method for calculating the efficiency of utility boilers, a method for optimizing the proportion of coal-mixed combustion, and a method for optimizing the amount of operating oxygen. Background technique [0002] The goal of carbon peaking and carbon neutrality is the "dual carbon" goal that is often mentioned by the media. The proposal of the "dual carbon" goal has a profound development background at home and abroad, and will also have a profound impact on the economy and society. [0003] In the prior art, the main form of power supply in China is thermal power generation; thermal power generation has the characteristics of high energy consumption and high pollutant emissions. In order to solve the problems of high energy consumption and high pollutant emissions, improving the efficiency of power station boilers is the focus of many s...

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Problems solved by technology

Limited by technical conditions, domestic and foreign power plants can only conduct industrial analysis

However, industrial analysis can only guide the power plant to make a rough fuel ratio, and it is difficult to accurately calculate the boiler efficiency

[0006] 2. Boiler performance testing requires a lot of manpower and funds, so power plants generally only invite special testing units to conduct performance testing during the five-year overhaul period

For daily energy consumption management, due to the inability to obtain accurate boiler efficiency data, it is difficult to control the operating status of the unit in real time, making the boiler and its auxiliary equipment always operate in a low-efficiency state, resulting in a large waste of energy

[0007] 3. In the assessment test of the new unit, due to the constraints of geography and technology, it is generally impossible to conduct a thorough test on the boiler at the production site, causing the actual operating status of the unit to deviate from the design requirements. When the final result fails to meet the contract requirements, there will be great Controversy; especially in foreign power plants supplied by China, the resulting disputes often lead to great economic losses for the Chinese side

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