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Blowing-down and reblowing control process for annular lime kiln

An annular sleeve, rest and rewind technology, which is applied to furnace control devices, furnaces, lighting and heating equipment, etc., can solve the problems of inconsistent personnel operation levels, difficulty in rest and rewind operations, and high staffing requirements, reducing the need for Cost and labor intensity, the effect of realizing automation and humanization, and improving control accuracy

Active Publication Date: 2013-04-24
NANJING MEISHAN METALLURGY DEV +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Normally, 2-3 furnace operators must operate at the same time for wind shutdown and recovery. Normal operation requires high personnel configuration, especially when it is necessary to perform shutdown and recovery operations for multiple annular sleeve kilns at the same time. , Re-air operation brings certain difficulties, and at the same time, the inconsistent level of personnel operation also seriously affects the efficiency and operation accuracy of wind-off and re-air

Method used

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  • Blowing-down and reblowing control process for annular lime kiln
  • Blowing-down and reblowing control process for annular lime kiln

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specific Embodiment

[0015] 1. Equipment requirements:

[0016] (1) High-temperature fan: it can be controlled remotely, and the speed of the high-temperature fan can be adjusted through the opening of the coupler or the frequency conversion parameters; the opening of the damper can be controlled remotely, and there is a feedback signal, and the adjustment step is 1%; the thin oil station can be operated remotely Control, and the running signal and pressure signal have feedback.

[0017] (2) Driving fan: The driving wind pressure can be adjusted by adjusting the frequency of the variable frequency motor; there is a driving wind relief valve, which can remotely control the valve opening; the driving wind pressure has feedback.

[0018] (3) Burner: The burner can be ignited and extinguished remotely; the quick-cut valve of the gas main pipe is interlocked with the pressure of the gas ring pipe; the regulating valve of the gas branch pipe of each burner can be operated remotely; the nitrogen purg...

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Abstract

The invention discloses a blowing-down and reblowing control process for an annular lime kiln. The blowing-down and reblowing control process comprises a blowing-down control process and a reblowing control process. Blowing-down and reblowing operations of the annular lime kiln are automatically controlled and monitored through a PLC (programmable logic controller) device, so that the control accuracy is increased, uncertainty in blowing-down and reblowing operations due to manual control can be reduced, the production efficiency is improved, requirements for labor and time on blowing-down and reblowing operations of the annular lime kiln are reduced, production costs and labor intensity of workers are effectively decreased, and production automation and humanization can be achieved.

Description

[0001] technical field [0002] The invention relates to an annular sleeve kiln control process, in particular to an annular sleeve kiln shutdown and recovery air control process. Background technique [0003] The sleeve lime kiln is a kind of lime kiln, which has the characteristics of low heat consumption, high lime activity, simple structure and strong fuel adaptability. Compared with the traditional lime kiln, the lime is calcined in the annular space, and the air flow distribution is more uniform , There is no cooling equipment in the kiln, the failure rate is low, and it is easy to maintain. It is suitable for the iron and steel industry to use coke oven gas and calcium carbide, and the chemical industry to use calcium carbide furnace tail gas to produce high-quality lime. In the daily production process of the annular sleeve kiln, there will be insufficient gas supply, and one or more of the kilns need to be shut down for a short time; or due to a certain equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D19/00
Inventor 鲍亮亮郭占军陈志超
Owner NANJING MEISHAN METALLURGY DEV
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