Method for controlling temperatures before and after coke oven periodical repair

A coke oven and standard temperature technology, applied in the field of coking, can solve the problems of damage to the furnace body, relatively large changes in coking time, and large smoke when the door is removed, so as to reduce the heat consumption of coking, avoid environmental pollution, and stabilize the heating system.

Active Publication Date: 2017-11-21
ANGANG STEEL CO LTD
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Problems solved by technology

[0002] During the coke oven scheduled repair or planned shutdown, each carbonization chamber is in a state of shutdown for a long time, and the coking time is relatively long. It is necessary to adjust the temperature of the coke oven in time to avoid high temperature accidents caused by coke being overfired or the temperature of the vertical flue is too high. After the end, the coking time changes greatly, and the temperature control management is difficult. Due to the lack of certain measures in the early stage, the temperature during the shutdown period was high. The smoke is relatively large, which not only affects the quality of coke, but also puts a huge pressure on environmental protection work, and the damage to the furnace body is irreparable

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  • Method for controlling temperatures before and after coke oven periodical repair

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Embodiment Construction

[0018] The present invention will be described in detail below, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0019] A method for controlling the temperature before and after the regular repair of coke ovens. The temperature of the coke ovens is controlled and managed in stages, so as to match the temperature management with the turnaround time. It specifically includes the following steps:

[0020] 1) Combining the length of coke oven regular maintenance with the coke oven temperature management, when the turnaround time is 19-26h, the shutdown maintenance is 4-8h:

[0021] Reduce the consumption of blast furnace gas for heating 8 hours before maintenance, and the reduction is 13%-15% of the currently used blast furnace gas;

[0022] 2) 4 hours before the maintenance, the temperature reaches the temperature required for the turnaround time of 22-24 hours: the standard temperature of the machine side is 1...

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Abstract

The invention relates to a method for controlling temperatures before and after a coke oven periodical repair. The temperatures of the coke oven are sectionally controlled and managed, so that the temperature management is matched with the turnover time. The method has the following advantages: in the coke oven periodical repair period or before and after a planned repair, the standard temperature is reasonably adjusted in time, thereby effectively lowering the coking heat consumption of the coke oven, stabilizing the heating schedule of the coke oven, reducing the damage of the coke oven body, avoiding the vertical flue high-temperature accident or the phenomenon of formation of second coke due to excessive generation of coke, stabilizing the quality of coke, and avoiding environmental pollution caused by excessive generation of coke.

Description

technical field [0001] The invention belongs to the technical field of coking, and in particular relates to a method for controlling the temperature before and after regular repair of coke ovens. Background technique [0002] During the coke oven fixed repair or planned shutdown period, each carbonization chamber is in a shutdown state for a long time, and the coking time is relatively long. It is necessary to adjust the temperature of the coke oven in time to avoid high-temperature accidents caused by over-fired coke or excessively high temperature in the vertical flue. After the end, the coking time changes greatly, and the temperature control management is difficult. Due to the lack of certain measures in the early stage, the temperature during the shutdown period was high. The smoke is relatively large, which not only affects the quality of coke, but also puts a huge pressure on environmental protection work, and the damage to the furnace body is irreparable. Contents ...

Claims

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Application Information

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IPC IPC(8): C10B21/10
CPCC10B21/10
Inventor 党平周鹏彭磊张亚杰
Owner ANGANG STEEL CO LTD
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