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A method for online replacement of coke oven valve body

A replacement method and valve body technology are used in coke ovens, coke oven parts, and coke oven heating, etc., which can solve the problems of long time consumption, difficult handling of corroded bolts and broken wires, poor safety, etc., so as to achieve simple and economical operation. The effect of manpower and low cost

Active Publication Date: 2019-06-21
CHINA MCC20 GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an online replacement method for the coke oven valve body to solve the problems of difficult handling of corroded bolts and broken wires in the existing coke oven valve body, long time consumption and poor safety

Method used

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  • A method for online replacement of coke oven valve body
  • A method for online replacement of coke oven valve body

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Embodiment 1

[0033] The coke oven valve body online replacement method of the present invention is suitable for coke ovens with valve bodies installed horizontally (such as figure 1 shown), which can be applied to the replacement of coke oven valve bodies of various sizes. The air pipe adopted in this embodiment is a common welded pipe, and the top of the general coke oven has a spare, which is indispensable during normal maintenance. The blind plate used in this embodiment is a steel plate with a thickness of 10-20mm and a smooth surface, and its size is determined according to the application occasion, as long as it meets the application requirements.

[0034] Before replacing the coke oven valve body, make preparations: lubricate the new valve body turning plate weight, and transport it to the designated position under the coke oven one day in advance; Heat felt, refractory mud, butter and other materials, and prepare the tools needed in the operation process such as gas cutting, gas w...

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Abstract

The invention provides an online replacement method for a coke oven valve. The online overhauling replacement method for the coke oven valve is suitable for horizontally-mounted valve bodies. During gas cutting and heating, the pressure in a gas collection pipe is adjusted into the positive pressure, a fire source is prevented from entering the gas collection pipe, and explosion is avoided; duringdisassembly and assembly of the valve body, the pressure in the gas collection pipe is adjusted into the negative pressure, and the situation that when the valve body is disassembled, a great amountof gas is spilled out suddenly and consequently safety accidents happen is prevented; and meanwhile the bolt which cannot be disassembled normally is treated by the adoption of heating and quenching,and the bolt can be disassembled quickly. The online replacement method has the beneficial effects that operations are easy and convenient to implement, the overhauling time is short, the cost is low,the required work space is small, the labor force is saved, the labor intensity is lowered, safety and reliability are achieved, and the method is easy to realize; and a coke oven can operate stablyfor a long time, the replacement cost and time of the device are saved, the production continuity is guaranteed, the halt production loss is lowered, the actual production demands of factories can bemet, and the online replacement method is suitable for application and popularization in the production practice.

Description

technical field [0001] The invention relates to a coke oven valve body replacement method, in particular to an online coke oven valve body replacement method. Background technique [0002] The coke oven valve body is the gas and ammonia channel connecting the rising pipe of the coke oven and the gas collecting pipe. The connection or cut-off of raw gas between the rising pipe and the gas collecting pipe is completed through the water seal flap in the valve body. When the flap is closed , the water seal is formed by the sprayed ammonia water, which cuts off the gas channel between the gas collection pipe and the carbonization chamber, but the ammonia water can flow into the gas collection pipe; when the flap is opened, the water seal function is lost, and the raw gas in the carbonization chamber can directly enter the gas collection pipe through the valve body . The lower part of the valve body is fixed on the gas collecting pipe with flange connection, and the upper part is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/00C10B29/00C10B45/00
CPCB25B27/00C10B29/00C10B45/00
Inventor 赵宝良
Owner CHINA MCC20 GRP CORP
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