Removal and unloading method of lining refractory material of CDQ furnace

A technology for refractory materials and dry quenching furnaces, applied in furnaces, lining repairs, furnace components, etc., can solve problems such as high construction costs, large amount of materials used for measures, and high labor intensity, and achieve simple and applicable operation, reduce construction costs, and reduce The effect of labor intensity

Active Publication Date: 2018-12-14
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The conventional CDQ furnace lining removal method seriously restricts the construction progress, low efficiency, high labor intensity, large dust, deteriorates the working environment, and seriously affects the health of operators; and it is necessary to build and dismantle a large number of scaffolding construction and operation platforms inside and outside the furnace. The workload is heavy, the measures use a lot of materials, the construction cost is high, and the safety is not fully guaranteed during the dismantling of the platform and refractory materials
[0006] Therefore there are above-mentioned inconveniences and problems in the removal method of known CDQ furnace lining refractory material

Method used

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  • Removal and unloading method of lining refractory material of CDQ furnace
  • Removal and unloading method of lining refractory material of CDQ furnace

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Embodiment 1

[0040] see now figure 1 and figure 2 , figure 1 It is a schematic diagram of removing refractory bricks from CDQ furnaces according to the embodiment of the present invention, figure 2 It is a flow chart of the construction process for removing the refractory lining of the CDQ furnace according to the embodiment of the present invention.

[0041] The refractory material removal and unloading method for CDQ furnace lining of the present invention comprises the following steps:

[0042] a. Remove the equipment under the furnace

[0043] Empty the residual coke in the CDQ furnace tank, remove the vibrating feeder, rotary sealing valve, furnace plate gate, adjustment rod, etc. under the CDQ furnace body, and seal the basement hole with a 20mm thick steel plate; material channel and temporary storage yard.

[0044] b. Determine the gas secant line of the furnace shell

[0045]According to the refractory masonry drawing of the CDQ furnace and the permanent elevation referenc...

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Abstract

A coke dry quenching (CDQ) furnace inner lining refractory dismantling and discharging method comprises the steps of dismantling equipment under a CDQ furnace; determining gas cutting lines of a CDQ furnace housing; dismantling first the CDQ furnace housing and then the refractories thereof; disintegrating and lifting away the CDQ furnace housing, and putting the refractories of the CDQ furnace into a pot and then to a ground platform; spraying water; dismantling annular air ducts; dismantling primary dedusting device refractories; and dismantling refractories in a chute and a cooling zone. The CDQ furnace inner lining refractory dismantling and discharging method has the advantages of being reasonable in dismantling construction technology, simple and suitable in operation, safe and environment-friendly, and capable of raising efficiency, reducing labor intensity, making the most of a furnace body discharging down channel, greatly shortening a construction period, completely getting rid of erection of a scaffold platform and a transport corridor inside and outside the furnace, and greatly lowering construction cost.

Description

technical field [0001] The invention relates to a construction method for dismantling coke oven corollary equipment, in particular to a method for dismantling and unloading a refractory material lining a CDQ furnace. Background technique [0002] The CDQ furnace is a device for cooling the red coke in the coke oven. Due to the high efficiency, energy saving, environmental protection and cleanness of the CDQ, the national industrial policy requires that domestic coke ovens of 4.3m and above must be equipped with supporting CDQ equipment. CDQ has developed rapidly in the past 30 years. Due to the expiration of the first generation of CDQ coke ovens and their supporting equipment, CDQ furnaces built in the 1980s will be dismantled one after another. The CDQ furnace is composed of the matching furnace body frame, hoist, loading device, coke discharge device, dust removal, boiler, circulation fan, etc. The domestic CDQ furnace is a vertical tank with a circular cross-section. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D1/16
CPCF27D1/1694
Inventor 李正波李永慧
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED
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