Method for replacing ascending pipe base of coke oven

A replacement method and riser technology, applied in coke ovens, heating of coke ovens, petroleum industry, etc., can solve the problems of prolonging the use time of risers, long construction time, and high construction costs, so as to reduce the cost of repair projects and repair projects The effect of good quality and large safety factor

Inactive Publication Date: 2015-11-04
MCC5 GROUP CORP SHANGHAI
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Problems solved by technology

[0003] At present, the commonly used technical methods for the maintenance of the riser base of coke ovens are to seal the contact parts between the riser base and the furnace body, and to carry out online repairs on the lining refractories of the riser base, etc. These technical means can prolong the use of the riser in a short time time;...

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  • Method for replacing ascending pipe base of coke oven

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Embodiment 1

[0031] A 2×55-hole 6-meter coke oven in a coking plant of a steel factory was completed and put into operation in 2008. In 2013, 24 riser bases were severely damaged, and partial repairs could no longer meet production needs. The top of the riser is 20 meters above the ground, and a 100-ton crane is needed to replace the bottom of the riser, which is costly and poses a great safety hazard.

[0032] see now figure 1 , figure 1 It is a schematic diagram of the construction method for replacing the coke oven riser base of the embodiment of the present invention.

[0033] The coke oven riser base replacement method of the present invention is characterized in that it comprises the following steps:

[0034] 1. Install temporary chimney 3: Install a temporary steel pipe with a diameter of 710mm (slightly larger than the diameter of the coal charging hole) and a height of 1750mm on the top of the coke oven replacement furnace next to the coal charging hole of the ascending pipe. T...

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Abstract

Provided is a method for replacing an ascending pipe base of a coke oven. The method is characterized by comprising the following steps that a, a temporary chimney is mounted; b, a water-sealed valve turnover plate of an axle tube is closed; c, a flange bolt connected with the axle tube and temperature measuring and pressure measuring instrument are dismounted; d, a lifting support is mounted; e, an ascending pipe is lifted; f, the ascending pipe base is replaced. The method for replacing the ascending pipe base of the coke oven has the advantages that the repairing problem of the ascending pipe base can be thoroughly solved, the problem that the ascending pipe base must be lifted by a large-tonnage crane when replaced is eradicated, the quality of restoration work is good, the safety coefficient is large, construction time is short, and the restoration work cost is lowered.

Description

technical field [0001] The invention relates to coke oven equipment maintenance, in particular to a coke oven riser base replacement method. Background technique [0002] The coke oven ascending pipe is the equipment that connects the top of the coke oven coking chamber and the gas collecting pipe. It is divided into three parts: the base, the straight part, and the water sealing cover, and is connected by the bridge pipe, the water sealing valve body and the gas collecting pipe. After reaching the middle stage of the coke oven production process, due to the long age of the furnace and the long-term high temperature of the riser system, the corrosion is more serious. The upper part of the riser tube base is connected with the straight pipe, and the lower part is embedded in the top area of ​​the furnace and connected with the carbonization chamber. The riser base is made of gray cast iron, the inside (lined with clay bricks) circulates the raw gas from the carbonization cha...

Claims

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Application Information

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IPC IPC(8): C10B27/00
Inventor 谭春华
Owner MCC5 GROUP CORP SHANGHAI
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