Coal-fired boiler energy efficiency on-line monitoring method based on chemical balance

A technology for coal-fired boilers and energy efficiency, applied in the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as inaccurate energy efficiency data and inability to realize online monitoring of boilers

Active Publication Date: 2017-01-11
SHENYANG ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0004] In order to solve the problem that the energy efficiency of boilers in the background technology cannot be monitored online and the energy efficiency data is inaccurate, the purpose of the present invention is to provide an online monitoring method for energy efficiency of coal-fired boilers based on chemical balance

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  • Coal-fired boiler energy efficiency on-line monitoring method based on chemical balance

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Embodiment Construction

[0023] Further illustrate the present invention below in conjunction with accompanying drawing.

[0024] The present invention realizes the real-time monitoring of the thermal efficiency of the coal-fired boiler operation, and all the data are obtained through online real-time testing, which accurately reflects the real-time energy efficiency level of the boiler. The specific process is as follows: figure 1 shown.

[0025] For coal-fired industrial boilers, using the traditional positive balance method, the reason why the thermal efficiency of the boiler cannot be monitored in real time is that the type of coal used by the boiler changes a lot, and the calorific value of the coal cannot be monitored online, so the input to the boiler cannot be measured online. total calories. For the coal combustion process, the heat released by the combustion of C and H in coal accounts for more than 99% of the total combustion heat. Therefore, according to the monitoring of parameters such ...

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Abstract

The invention discloses a coal-fired boiler energy efficiency on-line monitoring method based on chemical balance. The coal-fired boiler energy efficiency on-line monitoring method comprises steps of monitoring a boiler working medium parameter, calculating to obtain boiler effective heat, monitoring a boiler smoke parameter, an ash parameter and a wind supply parameter, calculating total quantities of C,H and S which are generated through boiler combustion through chemical equilibrium, using combustion heat of C, H and S to calculate total heat inputted into the boiler, calculating heat efficiency of the boiler in real time according to effective heat and total heat of the boiler, and calculating boiler combustion efficiency in real time according to concentration of CO2 and CO. The beneficial effects of the coal-fired boiler energy efficiency on-line monitoring method are that: all data is obtained through testing online in real time, boiler heat efficiency can be calculated in real time through a chemical equilibrium theory, boiler heat efficiency and combustion efficiency can be monitored online, and a boiler real time energy efficiency level and a combustion level can be reflected accurately.

Description

technical field [0001] The invention relates to an online monitoring method for the operating thermal efficiency of a coal-fired boiler, which is used for monitoring the energy efficiency level of the coal-fired boiler. Background technique [0002] At present, my country's energy structure is dominated by coal. In addition to coal-fired power station boilers for power supply, many coal-fired industrial boilers are also major users of coal consumption. The thermal efficiency of coal-fired industrial boilers is low, the utilization efficiency of a large amount of coal is extremely low, and a large amount of air pollutants are produced, which brings great difficulties to my country's total coal control, energy conservation and emission reduction, and air pollutant control. . [0003] In order to promote the economical and efficient operation of coal-fired industrial boilers, the state has issued standards and norms such as "Economic Operation of Industrial Boilers", "Energy-Sa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 侯海盟邵春岩祁国恕王维宽惠宇
Owner SHENYANG ACAD OF ENVIRONMENTAL SCI
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