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A Method of Controlling Clinker Production Based on Prediction Data of Free Calcium

A technology for predicting data and free calcium, applied in the direction of comprehensive factory control, electrical program control, comprehensive factory control, etc., can solve the problems of long lag time, large random error, long cycle, etc., and achieve the effect of reducing coal consumption

Active Publication Date: 2021-09-14
ANHUI CONCH GRP +2
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Problems solved by technology

The content of free calcium oxide in clinker in most enterprises is obtained through manual testing, which takes a long time, usually once every 2 hours, with a long lag time and large random errors, which does not meet the requirements of real-time control

Method used

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Embodiment Construction

[0023] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0024] In the field of intelligent control of building materials and cement clinker production, with the development of optimization control algorithms and computer technology, the intelligent transformation of traditional industries has been carried out steadily, and the optimization control system of cement clinker production experts has been successfully applied in many factories. Cement clinker free calcium is a key indicator parameter of clinker quality. The results are generally taken within 2 hours, and the results are measured by the laboratory. If the results are used to adjust the operation, there will be a large lag, which cannot meet the control requirements. With the development of free calcium prediction technology, the target value of the secondary air temperature is optimized...

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Abstract

The invention discloses a method for controlling clinker production based on free calcium prediction data. value, laboratory clinker KH value and quality data correction confirmation button signal; calculate the predicted free calcium content value according to the collected signal; the operator sets the control target of free calcium, and calculates fCaO( 校正值 ) and the model relationship between fCaO and secondary air temperature, calculate the target value of secondary air temperature, and automatically write the target value into the target parameters of the model between secondary air temperature and kiln head coal feeding and kiln feeding , Automatically adjust kiln head coal and kiln feeding amount. The invention has the advantages of adjusting the secondary air temperature through the predicted value of free calcium, and then controlling the coal feeding amount of the kiln head and the kiln system, so as to achieve the goals of reducing coal consumption, energy saving and emission reduction.

Description

technical field [0001] The invention relates to the field of cement clinker production, in particular to a method for controlling clinker production based on predicted free calcium data. Background technique [0002] fCaO (free calcium oxide) indicates the remaining degree of calcium oxide combined with silicon oxide, aluminum oxide and iron oxide during raw meal calcination, and its level directly affects the stability of cement and the strength of clinker. It should be fully realized that free calcium oxide is not only the quality index of semi-finished products, but also an important economic index related to the production cost of cement. The reasonable free calcium control range should be between 0.5-2.0%, and the weighted average is about 1.1%. Too high or too low is considered unqualified. Relevant foreign data reports: every 0.1% reduction in clinker free calcium oxide will increase heat consumption by 58.5 kJ (14 kcal) per kilogram of clinker; It is necessary to i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 李乐意孔取和詹家干殷学兵王秋旗王恒兵王书信陆小松陈开志王松华
Owner ANHUI CONCH GRP
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