Self-extraction method of cement calciner temperature based on bfcm-iwm fuzzy rules

Abstract

The invention discloses a cement decomposition furnace temperature control method based on BFCM-iWM fuzzy rule self-extraction. The method includes the steps that through analysis of the decompositionfurnace technology and on-site experience summarization, values related to the outlet temperature of a decomposition furnace are analyzed, and an outlet temperature control strategy of the decomposition furnace is determined; data in the operation process of the decomposition furnace is collected by inquiring an industrial field database; when the coal feeding amount of the decomposition furnaceis changed, elimination is conducted according to the condition and the 3 sigma criterion; the temperature deviation and the deviation change rate of the decomposition furnace and the domain range ofthe coal feeding increment of the decomposition furnace are determined after elimination; sample data is clustered by using a BFCM clustering method, and the credibility of the sample data is determined; a rule is extracted on the basis of the iWM method added with credibility; a fuzzy controller is built on the basis of the rule, and temperature control is achieved. According to the method, the rule is automatically extracted from the data by using the iWM method added with the data credibility, the subjectivity and limitation of manual rule making rule are avoided, and the accuracy and robustness of the rule are improved.

Description

technical field [0001] The invention relates to the field of process industry temperature control, in particular to a cement decomposition furnace temperature control method based on self-extraction of BFCM-iWM fuzzy rules. Background technique [0002] The cement calciner is the core part of the precalciner system, which undertakes the tasks of pulverized coal combustion, gas-solid heat exchange and carbonate decomposition in the precalciner kiln system, so that the decomposition rate of raw materials entering the kiln can reach more than 90%, thus greatly The output per unit effective volume of the rotary kiln is improved. The effective decomposition of carbonate requires a relatively stable temperature. If the temperature is too high, the preheater will be blocked; if the temperature is too low, the decomposition of carbonate will be insufficient, which will increase the load of the rotary kiln. The produced cement hydrolyzes slowly during application, which seriously af...

AI Technical Summary

Problems solved by technology

[0003] At present, many cement plants still learn from the working experience of on-site operators. The control based on experience is not accurate, the production efficiency is low, and the energy consumption is high. Manual operation is used to obtain a satisfactory control effect.

Due to the complex learning mechanism, some advanced control methods are difficult to make substantial progress and application in the temperature control process of calciner with changing working conditions

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