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Automatic control method for improving uniformity of temperature of sleeve kiln

A uniformity and controller technology is applied in the field of automatic control to improve the temperature uniformity of the sleeve kiln, which can solve problems such as temperature difference, and achieve the effects of improving uniformity, improving the level of automatic control, and uniform and stable lime quality.

Active Publication Date: 2012-09-26
BEIJING SHOUGANG AUTOMATION INFORMATION TECH +2
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic control method for improving the temperature uniformity of the sleeve kiln, which solves the problem that a large temperature difference is easily formed between the combustion chambers of the same layer, can improve the uniformity of the combustion chamber temperature, and improve product quality. Protects internal refractories; and saves energy

Method used

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  • Automatic control method for improving uniformity of temperature of sleeve kiln
  • Automatic control method for improving uniformity of temperature of sleeve kiln
  • Automatic control method for improving uniformity of temperature of sleeve kiln

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Experimental program
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Embodiment Construction

[0031] See figure 1 with figure 2 .Set temperature extreme value judgment controller, temperature fuzzy controller, gas flow regulation controller and combustion air flow controller in programmable logic controller (PLC),

[0032] Use the following methods to control the combustion chamber temperature, gas flow and air flow of the annular sleeve type shaft kiln:

[0033] (1) The current single combustion chamber temperature T is calculated by the temperature extreme value judging controller n and the average temperature T of the combustion chamber in the same layer avg The deviation value ΔT n , select the maximum deviation value ΔT that exceeds the process requirements max As the output of the temperature extreme value judgment controller.

[0034] (2) The maximum deviation value ΔT obtained in step (1) max As the input variable of the temperature fuzzy controller.

[0035] Among them, the specific design steps of the temperature fuzzy controller are as follows:

[0...

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Abstract

The invention relates to an automatic control method for improving the uniformity of the temperature of a sleeve kiln and belongs to the technical field of industrial automation. According to the method, on the basis of a fuzzy control principle, the variation of the temperature of each combustion chamber of the ring-shaped sleeve vertical kiln is tracked by an industrial control computer so as to control the temperature of the ring-shaped sleeve vertical kiln. A temperature extreme value judgment controller, a temperature fuzzy controller, a gas flow regulation controller and a combustion air flow controller are arranged in a programmable logic controller (PLC) machine; and the temperature of the sleeve kiln is controlled and regulated by judging the variation of the temperature of each combustion chamber, automatically regulating a distribution coefficient of gas in each combustion chamber and regulating the gas flow and the combustion air flow of each combustion chamber according to the coefficient. According to the method provided by the invention, due to the adoption of the automatic control method, the uniformity of the temperatures of the combustion chambers can be improved, the product quality is improved and refractory materials inside the sleeve kiln are protected.

Description

technical field [0001] The invention belongs to the technical field of industrial automation control, and in particular provides an automatic control method for improving the temperature uniformity of a sleeve kiln. Background technique [0002] Annular sleeve type shaft kiln is a professional equipment for smelting system to manufacture active lime. It is divided into upper and lower combustion layers, and there are 4 to 7 combustion chambers in each layer according to the design capacity of the shaft kiln. Throughout the production process, the control of the combustion process is the key. In the prior art, the combustion control system of the annular sleeve type shaft kiln adopts a PLC control method based on heat balance. The adjustment and control of the combustion control system is based on the heat required to decompose limestone. The gas calorific value collected by the online calorific value meter and the heat consumption and output of the designed product are adj...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B1/26
Inventor 宋鹏宇张志军白玉林黄起极齐保杰许恩全
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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