CN109837102B - Method for quickly removing refractory masonry of large coke oven body - Google Patents
Method for quickly removing refractory masonry of large coke oven body Download PDFInfo
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- CN109837102B CN109837102B CN201910226203.5A CN201910226203A CN109837102B CN 109837102 B CN109837102 B CN 109837102B CN 201910226203 A CN201910226203 A CN 201910226203A CN 109837102 B CN109837102 B CN 109837102B
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Abstract
A method for quickly removing refractory masonry of a large coke oven body is characterized by comprising the following steps: a. b, hoisting 2 small excavators to the top of the coke oven by using a truck crane, c, moving a long arm excavator to the chute part of the coke oven through the slope to start the operation of dismantling the top of the coke oven and the coking chamber, d, dismantling the chute and the regenerator from two ends of the coke oven side to the coke side by using 2 large excavators, e, mainly dismantling the bottom of a horizontal flue of the coke oven by adopting manual operation, f, cleaning and repairing a bed plate and a lower spray pipe of the coke oven, cleaning brick residue sundries falling into a clean seam, and carrying out the operation of rebuilding refractory bricks of the coke oven body after the cleaning is finished. The method has the advantages of reasonable design of the dismantling steps, proper connection, step fastening, well-in-order, safe and reliable dismantling engineering, quick dismantling of the refractory masonry, labor intensity reduction, construction period saving and engineering cost reduction.
Description
Technical Field
The invention relates to a method for removing refractory masonry, in particular to a method for quickly removing the refractory masonry of a large coke oven body.
Background
At present, more than 100 large coke ovens in the middle and later furnace ages are available in China. Along with the lapse of time, the brickwork of the coke oven body is aged more and more, and the firebrick is damaged seriously; the furnace protecting iron piece is broken and is not tightly sealed with the body masonry, so that the coke oven body is smoked and fired in a large area in the production process, the production is seriously influenced, and the environmental protection requirement cannot be met. The original coal tower, the original intermediate station, the original coke oven foundation, the original resistance wall and the original oven end station of the coke oven are intact and can be continuously used. In order to save cost, a plurality of coke plants keep all civil engineering parts, remove the coke oven body masonry, the furnace protection iron pieces and relevant process equipment, then re-build the coke oven body masonry and install the furnace protection iron pieces and the relevant process equipment, and enable the coke oven to be continuously put into production. Therefore, a method for quickly removing the refractory masonry of the large coke oven body is urgently needed in the industry.
Disclosure of Invention
The invention aims to provide a method for quickly removing the refractory brickwork of a large coke oven body, which can safely and reliably remove the refractory brickwork, effectively protect a coke oven foundation platform, a resistance wall and equipment under the oven.
In order to achieve the purpose, the technical solution of the invention is as follows:
a method for quickly removing refractory masonry of a large coke oven body is characterized by comprising the following steps:
a. preparation work before dismantling the refractory brickwork of the coke oven body:
(1) before the fireproof masonry of the coke oven body is removed, the periphery of the coke oven body is protected, and a gap between the coke oven body and the platform is covered and protected by a plurality of protection plates; covering and protecting a waste gas shutter hole on a flue by adopting a wood springboard, and preventing refractory bricks from falling to a basement of the coke oven; the outer edge of the coke side platform is shielded by using a waste tray, so that the rolled refractory bricks are prevented from falling onto a track of the coke quenching car; the downward spray pipe from the basement is filled with linen to prevent brick slag from falling into the basement and blocking during the dismantling process;
(2) taking the oven door of the coke oven, and dismantling the oven door frame, the oven top equipment pipeline, the machine side and coke side platform and the oven protection iron piece of the coke oven;
b. because the structure bearing of the coke oven top is limited, 2 small excavators are hoisted to the coke oven top by a truck crane, the small excavators are adopted to demolish from the coke oven top end table and the counter side to the middle coke oven, the coke oven top and the carbonization chamber are demolished, one part of the waste refractory bricks produced by demolishing is filled into the carbonization chamber of the coke oven, the other part of the waste refractory bricks is transported backwards to the coke oven side, and the waste refractory bricks form a slope at the coke oven side after 10 holes of the refractory brickwork at the coke oven side are demolished so that the long arm excavator can climb to the chute part of the coke oven for operation;
c. the long-arm excavator runs to the chute position of the coke oven through the slope to start the dismantling operation of the oven coke oven top and the carbonization chamber, all the waste refractory bricks are reversely transported towards the side of the coke oven machine, and the excavated waste materials are transported to the side rail ground of the coke oven machine through the side of the coke oven machine so as to be transported away in a centralized way;
d. removing coke oven chutes and regenerative chambers from two ends of a coke oven machine side to the coke oven machine side by using 2 large excavators, discharging waste materials from the coke oven machine side, and reserving the bottom of a horizontal flue of the coke oven according to the excavation depth;
e. the bottom of the horizontal flue of the coke oven is mainly dismantled by manpower, and the bottom of the horizontal flue of the coke oven is dismantled by a mechanical auxiliary construction mode, so that a leveling layer and two end resisting walls of a coke oven foundation platform are prevented from being damaged by machinery and other tools in the dismantling process;
f. cleaning and repairing a coke oven hearth plate and a lower spray pipe, removing part of cracked coke oven hearth plate and expansion joint edges, cleaning brick residue sundries falling into clean joints, filling and recovering by using cement-based reinforced grouting materials, removing linen in the lower spray pipe of the coke oven, dredging by using high-pressure water, cleaning tar and sundries, and performing masonry work of a refractory brick of the coke oven body after cleaning.
The method for quickly dismantling the refractory masonry of the large coke oven body can be further realized by adopting the following technical measures.
The method of the foregoing, wherein the protective plate is a protective plate that has been previously removed.
In the method, the thickness of the wood springboard is more than or equal to 50 mm.
The method, wherein the hoisting capacity of the truck crane is more than or equal to 200 t.
After the technical scheme is adopted, the method for quickly dismantling the refractory masonry of the large coke oven body has the following advantages:
1. the dismantling steps of the refractory brickwork of the coke oven body are reasonable in design, proper in connection, fastened step by step and well-ordered;
2. the dismantling engineering is safe and reliable, the refractory masonry can be dismantled quickly, the labor intensity is reduced, and the construction period is saved;
3. effectively protects the coke oven foundation platform, the resisting wall and the equipment under the coke oven, lays a foundation for reconstruction and reduces the engineering cost.
Drawings
FIG. 1 is a schematic plan view of the top of a large coke oven according to an embodiment of the invention;
FIG. 2 is a schematic vertical view of a large coke oven body in the embodiment of the invention.
In the figure: 1 resisting wall, 2 end tables, 3 long-arm digging machines, 4 furnace tops, 5 middle tables, 6 carbonization chambers, 7 chutes, 8 regenerative chambers, 9 machine side ground, 10 small digging machines, 11 waste bricks are scraped to the machine side ground, and 12 machine sides.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention discloses a construction process of a method for quickly removing a refractory masonry of a large coke oven body, which comprises the following steps: cooling a coke oven body → dismantling an iron piece for protecting the coke oven, protecting a coke side of the coke oven, a machine side platform and an opening of the oven body → hoisting a small excavator to an end platform of the top of the coke oven, a middle platform → the top of the coke oven, dismantling 10 holes on a side refractory masonry of a coking chamber, a left side and a right side → dismantling a coke oven top by a long arm excavator, dismantling a refractory masonry of the coking chamber → a chute of the coke oven and a refractory masonry of a regenerator → dismantling the bottom of a horizontal flue of the coke.
The invention discloses a method for quickly dismantling a refractory masonry of a large coke oven body, which comprises the following steps:
a. preparation work before dismantling the refractory brickwork of the coke oven body:
(1) protecting the periphery of a coke oven body before the refractory brickwork of the coke oven body is removed, covering and protecting a gap between the coke oven body and a platform by using the removed protection plate, and covering and protecting a waste gas shutter hole on a flue by adopting a 50mm thick wood springboard to prevent refractory bricks from falling to a basement; the outer edge of the coke side platform is shielded by using a waste tray, so that the rolled refractory bricks are prevented from falling onto a track of the coke quenching car; linen is filled in the lower spray pipe of the coke oven from the basement, so that brick slag is prevented from falling into the lower spray pipe and being blocked in the dismantling process and is difficult to clean;
(2) picking up a coke oven door, and dismantling an oven door frame, an oven top equipment pipeline, an oven side, a coke side platform and an oven protection iron piece; FIG. 1 is a plan view of the top of a large coke oven according to an embodiment of the invention.
b. The structure of the coke oven top is limited, 2 small excavators are hoisted to the coke oven top by a truck crane with 200t of hoisting capacity, the small excavators are adopted to remove the coke oven top from the side direction of an end table and a platform machine of the coke oven top to the middle, the coke oven top 4 and a carbonization chamber 6 are removed at the side of the end table 2 and the platform machine 5, one part of refractory bricks generated by the first removal is firstly filled into the carbonization chamber of the coke oven, the other part of waste bricks are transported backwards in the side direction of the coke oven machine, and the waste bricks form a slope at the side of the coke oven after 10 holes at the side of the coke oven are removed, so that the long-arm excavator 3 can climb.
c. After waste bricks dug at one corner of the machine side form a slope on the machine side of the coke oven, the long-arm digging machine runs to the chute part of the coke oven through the slope to start the operation of dismantling the oven top and the coking chamber of the coke oven, all the waste bricks are transported backwards to the machine side direction, and dug waste materials are transported to the machine side rail ground through the machine side of the coke oven and are transported away in a centralized way.
d. And 2 large excavators are utilized to remove the chute and the regenerator of the coke oven from the side of the coke oven end machine to the coke side, the waste is discharged from the side of the coke oven machine, and the bottom of the horizontal flue of the coke oven is reserved according to the excavation depth.
e. The horizontal flue bottom of the coke oven is mainly dismantled by manpower, the machinery is an auxiliary construction mode, and the leveling layer and two end resisting walls of the coke oven foundation platform are prevented from being damaged by machinery and other tools in the dismantling process; FIG. 2 is a schematic vertical view of a large coke oven body in the embodiment of the invention.
f. Cleaning and repairing a coke oven hearth plate and a lower spray pipe: removing part of cracked coke oven hearth plate and expansion joint edges, cleaning brick slag impurities falling into clean joints, filling and recovering by using cement-based reinforcing grouting materials, removing cloth in a lower spray pipe of a coke oven, dredging by using high-pressure water, cleaning tar and impurities, and performing masonry work of a refractory brick of the coke oven body after cleaning.
The method for quickly dismantling the refractory masonry of the large coke oven body has the advantages of reasonable design of dismantling steps, proper connection, step-by-step fastening and well-ordering, safe and reliable dismantling engineering, quick dismantling of the refractory masonry, labor intensity reduction, construction time shortening, construction cost saving and remarkable economic benefit.
The method for quickly dismantling the refractory masonry of the large coke oven body is applied to 2 coke oven dismantling projects of a steel-coated coke plant, has safe and reliable construction, short construction time and obvious effect, and is determined by relevant departments and units.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (4)
1. A method for quickly removing refractory masonry of a large coke oven body is characterized by comprising the following steps:
a. preparation work before dismantling the refractory brickwork of the coke oven body:
(1) before the fireproof masonry of the coke oven body is removed, the periphery of the coke oven body is protected, and a gap between the coke oven body and the platform is covered and protected by a plurality of protection plates; covering and protecting a waste gas shutter hole on a flue by adopting a wood springboard, and preventing refractory bricks from falling to a basement; the outer edge of the coke side platform is shielded by using a waste tray, so that the rolled refractory bricks are prevented from falling onto a track of the coke quenching car; the downward spray pipe from the basement is filled with linen to prevent brick slag from falling into the basement and blocking during the dismantling process;
(2) picking up a coke oven door, and dismantling an oven door frame, an oven top equipment pipeline, an oven side and coke side platform and an oven protection iron piece;
b. because the structure bearing of the coke oven top is limited, 2 small excavators are hoisted to the coke oven top by a truck crane, the small excavators are adopted to demolish from the coke oven top end table and the counter machine side to the middle of the coke oven, the coke oven top and the carbonization chamber are demolished, one part of the waste refractory bricks produced by demolishing is filled into the carbonization chamber of the coke oven, the other part of the waste refractory bricks are transported backwards to the coke oven side, and after 10 holes of the refractory brickwork of the coke oven side are demolished, the waste refractory bricks form a slope on the coke oven side so that the long arm excavator can climb to the chute part of the coke oven for operation;
c. the long-arm excavator runs to the chute position of the coke oven through the slope to start the dismantling operation of the oven top and the carbonization chamber of the coke oven, all the waste refractory bricks are reversely transported towards the side of the coke oven, and the excavated waste materials are transported to the side rail ground through the side of the coke oven so as to be transported away in a centralized way;
d. removing coke oven chutes and regenerative chambers from two ends of a coke oven machine side to a coke side by using 2 large excavators, discharging waste materials from the coke oven machine side, and reserving the bottom of a horizontal flue of the coke oven according to the excavation depth;
e. the bottom of the horizontal flue of the coke oven is mainly dismantled by manpower, and the bottom of the horizontal flue of the coke oven is dismantled by a mechanical auxiliary construction mode, so that a leveling layer and two end resisting walls of a coke oven foundation platform are prevented from being damaged by machinery and other tools in the dismantling process;
f. cleaning and repairing a coke oven hearth plate and a lower spray pipe, removing part of cracked coke oven hearth plate and expansion joint edges, cleaning brick residue sundries falling into clean joints, filling and recovering by using cement-based reinforced grouting materials, removing linen in the lower spray pipe of the coke oven, dredging by using high-pressure water, cleaning tar and sundries, and performing masonry work of a refractory brick of the coke oven body after cleaning.
2. The method of claim 1, wherein the protective plate is a previously removed protective plate.
3. The method for quickly dismantling the refractory masonry of the large coke oven body of claim 1, wherein the thickness of the wood springboard is not less than 50 mm.
4. The method for quickly dismantling the refractory masonry of the large coke oven body of claim 1, wherein the hoisting capacity of the truck crane is not less than 200 t.
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| CN101081986A (en) * | 2007-02-13 | 2007-12-05 | 上海五冶冶金建设有限公司 | Coke oven masonry construction method employing upright line rod |
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| CN106753449A (en) * | 2016-12-09 | 2017-05-31 | 李洪泽 | A kind of method for clearing up coke oven chute |
| JP2018039921A (en) * | 2016-09-08 | 2018-03-15 | 新日鐵住金株式会社 | Demolition method of retaining wall of coke oven |
| JP2018096072A (en) * | 2016-12-12 | 2018-06-21 | 株式会社奥村組 | System and method for carrying out demolition material of building |
| CN109181715A (en) * | 2018-09-21 | 2019-01-11 | 中国冶集团有限公司 | The coke oven protective demolition of resistance to material device and method for dismounting |
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2019
- 2019-03-25 CN CN201910226203.5A patent/CN109837102B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081986A (en) * | 2007-02-13 | 2007-12-05 | 上海五冶冶金建设有限公司 | Coke oven masonry construction method employing upright line rod |
| CN101381607A (en) * | 2008-10-06 | 2009-03-11 | 中冶宝钢技术服务有限公司 | Manual repair technique of coking chamber wall |
| CN102504837A (en) * | 2011-10-28 | 2012-06-20 | 马钢(集团)控股有限公司 | Synchronous cutting-off and unroofing repair method for coke side oven head of large-scale coke oven machine |
| JP2018039921A (en) * | 2016-09-08 | 2018-03-15 | 新日鐵住金株式会社 | Demolition method of retaining wall of coke oven |
| CN106753449A (en) * | 2016-12-09 | 2017-05-31 | 李洪泽 | A kind of method for clearing up coke oven chute |
| JP2018096072A (en) * | 2016-12-12 | 2018-06-21 | 株式会社奥村組 | System and method for carrying out demolition material of building |
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