CN103509566B - Overhaul construction method of double chute position of dry quenching furnace - Google Patents
Overhaul construction method of double chute position of dry quenching furnace Download PDFInfo
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- CN103509566B CN103509566B CN201210203957.7A CN201210203957A CN103509566B CN 103509566 B CN103509566 B CN 103509566B CN 201210203957 A CN201210203957 A CN 201210203957A CN 103509566 B CN103509566 B CN 103509566B
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Abstract
An overhaul construction method of a double chute position of a dry quenching furnace is characterized by comprising the following steps: a. installing of ceiling facilities, b. removing of double chute support column bricks, c. overhaul and constructing of double chute support column bricks and d. construction of a double chute partition wall pouring material. The overhaul construction method of the double chute position of the dry quenching furnace can enhance the conjunction degree of new and old brickworks and chute region support column integrality, can improve thermal shock resistant, spalling resistant and wear resistant properties of double chute position support columns and partition walls, is good in overhaul construction quality, and after putting into production, can prolong service life of the dry quenching furnace and reduce overhaul construction cost.
Description
Technical field
The present invention relates to a kind of stove maintenance constructional method, specifically, is position, a kind of coke dry quenching furnace diclinic road maintenance constructional method.
Background technology
In order to adapt to national environmental protection requirement, most domestic steel mill and coke-oven plant successively newly-built large volume coke dry quenching furnace.According to our understanding to domestic large volume dry coke quenching market, from structure design, the coke dry quenching furnace of 150 more than t/h all adopts diclinic road structure.Partition wall in coke dry quenching furnace diclinic road is conducive to the firm and durable of chute pillar stiffener on the one hand; Effectively can solve chute district coke floats situation on the other hand.But position, coke dry quenching furnace diclinic road refractory materials work under bad environment, is subject to the repeated stock of about 20,000 times, 200 ~ 1000 DEG C temperature variation every year, huge thermal shocking causes the spalling of refractory materials to be damaged; Secondly position, diclinic road is subject to coke breeze to wash away one of position the most serious; The pillar stiffener at position, diclinic road supports most portions weight of upper, annular air flue and the section of prestoring masonry, causes the damage at this position further; Capabilities of refractory materials problem, the reducing gas factor such as erosion, alkaline attack to refractory materials also exacerbates the damage of chute district pillar stiffener.Cause the refractory brick of coke dry quenching furnace diclinic road position pillar stiffener and partition wall to rupture thus, it is impaired fastest, and be the life-span bottleneck of whole coke dry quenching furnace body refractory materials, the life-span is about 1-2 only, and other position refractory life of coke dry quenching furnace body about 8 years.Known position, coke dry quenching furnace diclinic road maintenance constructional method exist between new and old masonry agree with degree and chute district pillar stiffener globality is poor, diclinic road position pillar stiffener and partition wall short for work-ing life, furnace outage time is long, the problem that maintenance duration is grown and cost is high.
Therefore known position, coke dry quenching furnace diclinic road maintenance constructional method also exists above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, be to propose a kind of enhancing and agree with degree and chute district pillar stiffener globality between new and old masonry, and improve position, the coke dry quenching furnace diclinic road maintenance constructional method of diclinic road position pillar stiffener and partition wall heat shock resistance, antistripping and wear resistance.
For achieving the above object, technical solution of the present invention is:
A kind of position, coke dry quenching furnace diclinic road maintenance constructional method, is characterized in that comprising the following steps:
A, installation furred ceiling facility
Suspender is adopted to draw high pillar stiffener two stringcourse top, diclinic road masonry, be connected and fixed from peephole support to pillar stiffener two stringcourse strut member diclinic road, diclinic road pillar stiffener two stringcourse pull bar, on coke, an overfill protection is carried out to pillar stiffener two stringcourse bottom, diclinic road by very heavy topmast simultaneously, when preventing diclinic road pillar stiffener solution body construction, top masonry is caused to sink;
B, dismounting diclinic road pillar stiffener brick
First remove the partition block in diclinic road, then remove diclinic road pillar stiffener brick, diclinic road pillar stiffener brick is first removed from top to bottom, first removes X10 layer, then removes X11-X14 layer, then removes X5 layer, then removes X6-X9 layer;
C, overhaul, build diclinic road pillar stiffener brick by laying bricks or stones, comprise following steps:
1) check the damage of each diclinic road pillar stiffener masonry every layer of brick, in order to ensure the globality of diclinic road pillar stiffener two stringcourse and be without prejudice, only to the diclinic road pillar stiffener of infringement windward face brick carry out replacings repairerment, the fissure of displacement is built by laying bricks or stones;
2), before building by laying bricks or stones, cleaning was carried out to former diclinic road pillar stiffener masonry clean, then water a little with water;
3) every layer when building by laying bricks or stones, the elevation dimension according to former diclinic road pillar stiffener masonry is built by laying bricks or stones, keeps the level of masonry, must not bow, and adopts that diclinic road pillar stiffener refractory brick is two-sided beats ash when building by laying bricks or stones, controls the mortar plumpness of brickwork joint well;
4) after each diclinic road pillar stiffener brick masonry, if there is larger brickwork joint, previously prepd heat-resistance stainless steel plate need be squeezed into brickwork joint, each diclinic road pillar stiffener brick can squeeze into heat-resistance stainless steel plate 2 ~ 3 pieces; The furred ceiling facility installed in step a is removed after overhauling, building diclinic road pillar stiffener brick by laying bricks or stones;
D, diclinic road partition wall mould material are constructed, and comprise following steps:
1) above diclinic road pillar stiffener, install the typified form made of the wooden form that 20mm is thick, the consistent size of typified form and former refractory brick marshalling, but make former four stringcourse partition walls change upper and lower two layers of diclinic road mould material partition wall into after employing mould material, stay between the 1st layer of diclinic road mould material partition wall and the 2nd layer of diclinic road mould material partition wall and establish construction joint; Stay between mould material partition wall both sides and chute pillar stiffener and establish 3mm dilatation joint, in dilatation joint, fill refractory ceramic fibre plate;
2) resistant to elevated temperatures mullite-SiC castable is adopted to pour into a mould; Vibrating head will be adopted fully to vibrate during mould material cast, mould material maintenance 48 hours rear collapsible dies, after form removal, mould material early strength is also lower, need strengthen half-finished protection, must not be subject to external force and vibration.
Position, coke dry quenching furnace diclinic road of the present invention maintenance constructional method can also be further achieved by the following technical measures.
Aforesaid method, in wherein said step b, uses Special drill machine when removing diclinic road pillar stiffener brick, bores 2 ~ 3 holes and smashes charing silica brick, take out the charing silica brick needing to remove to every block diclinic road pillar stiffener charing silica brick; Lay special stress on will calculate the degree of depth of boring, in order to avoid do not need the charing silica brick removed inside getting into.
Aforesaid method, wherein said step c4) in, the size of heat-resistance stainless steel plate is 140mm × 100mm × 2mm.
After adopting technique scheme, position, coke dry quenching furnace diclinic road of the present invention maintenance constructional method has the following advantages:
1, strengthen and agree with degree and chute district pillar stiffener globality between new and old masonry;
2, diclinic road position pillar stiffener and partition wall heat shock resistance, antistripping and wear resistance is improved;
3, overhaul construction quality good, after going into operation, extend coke dry quenching furnace work-ing life;
4, maintenance engineering cost is reduced.
Accompanying drawing explanation
Fig. 1 is the furred ceiling technical measures scheme of installation of the embodiment of the present invention;
Fig. 2 is the diclinic road structural representation of the embodiment of the present invention;
Fig. 3 is the diclinic road maintenance schematic diagram of the embodiment of the present invention;
Fig. 4 is the diclinic road partition wall cast schematic diagram of the embodiment of the present invention.
In figure: 1 peephole support, 2 diclinic road pillar stiffener two stringcourse pull bars, 3 diclinic road pillar stiffener two stringcourse strut members, 4 screw block, 5 coke, 6 diclinic road pillar stiffener two stringcourses, 7 diclinic road partition blocks, 8 diclinic road pillar stiffeners, 9 partition wall cast positions, 10 supporting bricks are removed and are again built position by laying bricks or stones, 11 the 2nd layers of mould material partition wall, 12 ceramic beaverboards, 13 the 1st layers of mould material partition wall.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further.
Embodiment 1
A kind of position, coke dry quenching furnace diclinic road maintenance constructional method, is characterized in that comprising the following steps:
A, installation furred ceiling facility
Fig. 1 is the furred ceiling technical measures scheme of installation of the embodiment of the present invention.
Suspender is adopted to draw high pillar stiffener two stringcourse top, diclinic road masonry, be connected and fixed from peephole support 1 to diclinic road pillar stiffener two stringcourse strut member 3 diclinic road pillar stiffener two stringcourse pull bar 2, on coke 5, an overfill protection is carried out to pillar stiffener two stringcourse bottom, diclinic road with 4, screw block simultaneously, when preventing diclinic road pillar stiffener solution body construction, top masonry is caused to sink;
B, dismounting diclinic road pillar stiffener brick
First remove diclinic road partition block 7, then remove diclinic road pillar stiffener 8 without damaged, first remove diclinic road pillar stiffener from top to bottom, remove X10 layer, then more easily remove X11-X14 layer, then remove X5 layer, then more easily remove X6-X9 layer; Described dismounting diclinic road pillar stiffener brick appropriate to the occasion employing Special drill machine, every block diclinic road pillar stiffener charing silica brick needs brill 2 ~ 3 holes, just can smash charing silica brick, takes out the charing silica brick needing to remove; Pay special attention to the degree of depth calculating boring, in order to avoid do not need the charing silica brick removed inside getting into;
C, overhaul, build diclinic road pillar stiffener brick by laying bricks or stones, comprise following steps:
Fig. 2 is the diclinic road structural representation of the embodiment of the present invention, and Fig. 3 is the diclinic road maintenance schematic diagram of the embodiment of the present invention.
1) check the damage of each diclinic road pillar stiffener masonry every layer of brick, in order to ensure the globality of diclinic road pillar stiffener two stringcourse and be without prejudice, only to the diclinic road pillar stiffener of infringement windward face brick carry out replacings repairerment, the fissure of displacement is built by laying bricks or stones;
2), before building by laying bricks or stones, cleaning was carried out to former diclinic road pillar stiffener masonry clean, then water a little with water;
3) every layer when building by laying bricks or stones, the elevation dimension according to former diclinic road pillar stiffener masonry is built by laying bricks or stones, keeps the level of masonry, must not bow, and adopts that diclinic road pillar stiffener refractory brick is two-sided beats ash when building by laying bricks or stones, controls the mortar plumpness of brickwork joint well;
4) after each diclinic road pillar stiffener brick masonry, if there is larger brickwork joint, previously prepd 140 × 100 × 2mm heat-resistance stainless steel plate need be squeezed into brickwork joint, each diclinic road pillar stiffener brick can squeeze into heat-resistance stainless steel plate 2 pieces; The furred ceiling facility installed in step a is removed after overhauling, building diclinic road pillar stiffener brick by laying bricks or stones;
D, diclinic road partition wall mould material are constructed, and comprise following steps:
Fig. 4 is the diclinic road partition wall cast schematic diagram of the embodiment of the present invention.
1) above diclinic road pillar stiffener, install the typified form made of the wooden form that 20mm is thick, the consistent size of typified form and former refractory brick marshalling, but make former four stringcourse partition walls change upper and lower two layers of diclinic road mould material partition wall into after employing mould material, stay between the 1st layer of diclinic road mould material partition wall 13 and the 2nd layer of diclinic road mould material partition wall 11 and establish construction joint; Stay between mould material partition wall both sides and chute pillar stiffener and establish 3mm dilatation joint, in dilatation joint, fill the thick refractory ceramic fibre plate 12 of 3mm;
2) resistant to elevated temperatures mullite-SiC castable is adopted to pour into a mould; Vibrating head will be adopted fully to vibrate during mould material cast, mould material maintenance 48 hours rear collapsible dies, after form removal, mould material early strength is also lower, need strengthen half-finished protection, must not be subject to external force and vibration.
Position, coke dry quenching furnace diclinic road of the present invention maintenance constructional method is carrying out using and promoting in husky steel 140t/h diclinic road dry coke quenching engineering and Taiyuan Iron and Steel Co. 160t/h diclinic road dry coke quenching engineering, construction quality is good, after going into operation, work-ing life extends, and receives the affirmative of owner.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (3)
1. position, a coke dry quenching furnace diclinic road maintenance constructional method, is characterized in that comprising the following steps:
A, installation furred ceiling facility
Suspender is adopted to draw high pillar stiffener two stringcourse top, diclinic road masonry, be connected and fixed from peephole support to pillar stiffener two stringcourse strut member diclinic road, diclinic road pillar stiffener two stringcourse pull bar, on coke, an overfill protection is carried out to pillar stiffener two stringcourse bottom, diclinic road by very heavy topmast simultaneously, when preventing diclinic road pillar stiffener solution body construction, top masonry is caused to sink;
B, dismounting diclinic road pillar stiffener brick
First remove the partition block in diclinic road, then remove diclinic road pillar stiffener brick, diclinic road pillar stiffener brick is first removed from top to bottom, first removes X10 layer, then removes X11-X14 layer, then removes X5 layer, then removes X6-X9 layer;
C, overhaul, build diclinic road pillar stiffener brick by laying bricks or stones, comprise following steps:
1) check the damage of each diclinic road pillar stiffener masonry every layer of brick, in order to ensure the globality of diclinic road pillar stiffener two stringcourse and be without prejudice, only to the diclinic road pillar stiffener of infringement windward face brick carry out replacings repairerment, the fissure of displacement is built by laying bricks or stones;
2), before building by laying bricks or stones, cleaning was carried out to former diclinic road pillar stiffener masonry clean, then water a little with water;
3) every layer when building by laying bricks or stones, the elevation dimension according to former diclinic road pillar stiffener masonry is built by laying bricks or stones, and keep the level of diclinic road pillar stiffener masonry, must not bow, when building by laying bricks or stones, diclinic road pillar stiffener refractory brick is two-sided beats ash, controls the mortar plumpness of brickwork joint well;
4) after each diclinic road pillar stiffener brick masonry, if there is larger brickwork joint, previously prepd heat-resistance stainless steel plate need be squeezed into brickwork joint, heat-resistance stainless steel plate 2 ~ 3 pieces squeezed into by each diclinic road pillar stiffener brick; The furred ceiling facility installed in step a is removed after overhauling, building diclinic road pillar stiffener brick by laying bricks or stones;
D, diclinic road partition wall mould material are constructed, and comprise following steps:
1) above diclinic road pillar stiffener, install the typified form made of the wooden form that 20mm is thick, the consistent size of typified form and former refractory brick marshalling, but make former four stringcourse partition walls change upper and lower two layers of diclinic road mould material partition wall into after employing mould material, stay between the 1st layer of diclinic road mould material partition wall and the 2nd layer of diclinic road mould material partition wall and establish construction joint; Stay between mould material partition wall both sides and chute pillar stiffener and establish 3mm dilatation joint, in dilatation joint, fill refractory ceramic fibre plate;
2) resistant to elevated temperatures mullite-SiC castable is adopted to pour into a mould; Vibrating head will be adopted fully to vibrate during mould material cast, mould material maintenance 48 hours rear collapsible dies, after form removal, mould material early strength is also lower, need strengthen half-finished protection, must not be subject to external force and vibration.
2. maintenance constructional method in position, coke dry quenching furnace diclinic road as claimed in claim 1, it is characterized in that, in described step b, Special drill machine is used when removing diclinic road pillar stiffener brick, 2 ~ 3 holes are bored to every block diclinic road pillar stiffener silicon carbide brick and smashes silicon carbide brick, take out the silicon carbide brick needing to remove; Lay special stress on will calculate the degree of depth of boring, in order to avoid do not need the silicon carbide brick removed inside getting into.
3. maintenance constructional method in position, coke dry quenching furnace diclinic road as claimed in claim 1, is characterized in that, described step c4) in, the size of heat-resistance stainless steel plate is 140mm × 100mm × 2mm.
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| CN201210203957.7A CN103509566B (en) | 2012-06-20 | 2012-06-20 | Overhaul construction method of double chute position of dry quenching furnace |
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| CN201210203957.7A CN103509566B (en) | 2012-06-20 | 2012-06-20 | Overhaul construction method of double chute position of dry quenching furnace |
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| CN106153628A (en) * | 2015-04-14 | 2016-11-23 | 五冶集团上海有限公司 | A kind of coke dry quenching furnace liner online test method |
| CN105387723B (en) * | 2015-11-27 | 2017-12-12 | 马鞍山钢铁股份有限公司 | A kind of coke dry quenching furnace three-dimensional modularized maintenance tool |
| CN106996698B (en) * | 2016-01-25 | 2018-12-14 | 五冶集团上海有限公司 | A kind of dismounting and discharge method of coke dry quenching furnace inner lining refractory |
| CN107239035B (en) * | 2016-03-28 | 2020-03-06 | 五冶集团上海有限公司 | Expert system for diagnosis and maintenance measures of damage condition of lining refractory material of dry quenching furnace |
| CN107129814A (en) * | 2017-01-01 | 2017-09-05 | 安徽马钢工程技术集团有限公司 | A kind of coke dry quenching furnace refractory lining diclinic road and its process built by laying bricks or stones |
| CN110105972A (en) * | 2019-06-21 | 2019-08-09 | 马鞍山钢铁股份有限公司 | A kind of coke oven burner-seeing brick and circle and its replacing options |
| CN110437851B (en) * | 2019-08-30 | 2024-07-09 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching furnace chute structure |
| CN110452719B (en) * | 2019-08-30 | 2024-09-03 | 中冶焦耐(大连)工程技术有限公司 | Two-cellular inclined airway |
| CN113429985A (en) * | 2021-06-11 | 2021-09-24 | 中冶天工集团有限公司 | Coke oven chute expansion joint building width accurate control template and use method thereof |
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| CN201704262U (en) * | 2009-12-29 | 2011-01-12 | 中冶焦耐工程技术有限公司 | Dry quenching chamber adopting air-cooling chute technology |
| CN102191066A (en) * | 2010-03-03 | 2011-09-21 | 五冶集团上海有限公司 | Coke dry quenching slope air course supporting brick overhaul construction process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS63125595A (en) * | 1986-11-13 | 1988-05-28 | Sumikin Chem Co Ltd | Method of dry quenching of coke |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201704262U (en) * | 2009-12-29 | 2011-01-12 | 中冶焦耐工程技术有限公司 | Dry quenching chamber adopting air-cooling chute technology |
| CN102191066A (en) * | 2010-03-03 | 2011-09-21 | 五冶集团上海有限公司 | Coke dry quenching slope air course supporting brick overhaul construction process |
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Effective date of registration: 20230621 Address after: No.9, Wuye Road, Jinjiang District, Chengdu, Sichuan 610063 Patentee after: CHINA MCC5 GROUP Corp.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2501 Patentee before: MCC5 Group CORPORATION LIMITED (SHANGHAI) |