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Automatic control method for calcining of annular sleeve kiln

An annular sleeve, calcining technology, applied in furnace control devices, furnaces, lighting and heating equipment, etc., can solve the problems of poor adjustment accuracy, affecting product quality, and time-consuming, reducing labor costs, eliminating instability, Effect of stabilizing process parameters

Active Publication Date: 2018-05-25
NANJING MEISHAN METALLURGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the existing manual operation, it can only be adjusted one by one, which takes a long time and the adjustment accuracy is poor. In addition, during the adjustment process, the airflow in the kiln has a dynamic process, and the calorific value of the gas also changes. It is difficult to achieve fast and accurate adjustment, resulting in kiln conditions Unstable, affecting product quality

Method used

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Experimental program
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Embodiment Construction

[0053]The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0054] A kind of annular sleeve kiln calcining automatic control method, this method comprises the steps:

[0055] (1) Parameter calculation;

[0056] (2) Control of the independent automatic control part: including automatic control of driving air temperature, automatic control of inner cylinder cooling air, calorific value control, and automatic control of lime cooling air;

[0057] (3) The control of the interlocking automatic control part.

[0058] In the automatic control method for the calcination of the annular sleeve kiln, the parameter calculation in step (1) refers to setting the push rod speed, heat consumption, air cooling coefficient, upper air ratio, lower air ratio, upper and ...

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Abstract

The invention provides an automatic control method for calcining of an annular sleeve kiln. The automatic control method comprises the following steps of 1, parameter calculation; 2, control of an independent automatic control part, wherein control comprises automatic control of driving air temperature, automatic control of inner cylinder cooling air, heat value control and automatic control of lime cooling air; and 3, control of an interlocking automatic control part. According to the automatic control method, rapid and accurate adjustment is realized, the temperature of each burner and the temperature of circulating gas are controlled and stabilized, the stability of the kiln condition is kept, reasonable utilization of energy is realized, and production energy consumption is reduced.

Description

Technical field: [0001] The invention relates to an automatic control method for calcination of an annular sleeve kiln, belonging to the technical field of thermal control. Background technique: [0002] The existing annular sleeve kiln is equipped with two layers of burners, and the number of burners in each layer is set according to the output of the annular sleeve kiln, generally 4-7. At present, domestic annular sleeve kilns use converter gas, blast furnace gas and coke oven gas recovered in the metallurgical industry as fuel gas. These recycled gases all have the problem of unstable calorific value and pressure. When the production output or gas calorific value changes, it must be adjusted through the adjustment device, mainly including the kiln dust removal damper, the high temperature fan speed, the gas main pipe regulating valve, the gas branch pipe regulating valve of the burner, the air branch pipe regulating valve of the burner and the drive Wind pressure, etc.,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D19/00C04B2/10
Inventor 胡荣卓翟炜超王国强鲍亮亮叶锋高英杰鲁绪松吴伟
Owner NANJING MEISHAN METALLURGY DEV