CN102304367A - Coke oven body mending process - Google Patents
Coke oven body mending process Download PDFInfo
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- CN102304367A CN102304367A CN201110227378A CN201110227378A CN102304367A CN 102304367 A CN102304367 A CN 102304367A CN 201110227378 A CN201110227378 A CN 201110227378A CN 201110227378 A CN201110227378 A CN 201110227378A CN 102304367 A CN102304367 A CN 102304367A
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- furnace shaft
- coking furnace
- refractory mortar
- shotcrete machine
- brickwork joint
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Abstract
The invention discloses a coke oven body mending process which comprises the following steps: puncturing, namely, drilling a grout hole which is communicated with a brick work joint at the brick work joint position; and jetting, namely, jetting refractory mortar into the grout hole through using a shotcreting machine. According to the invention, in the coke oven body mending process, the brick work joint which generates a string-leakage hole source is opened through the puncturing step so that the refractory mortar can be directly jetted in the brick work joint, and the mended coke oven can not be mended again within a long time, thereby greatly reducing the mending time of the coke oven body. Thus, the coke oven body mending process provided by the invention has good mending effect and is capable of reducing the manpower and material resources for mending.
Description
Technical field
The present invention relates to metallurgical use machinery maintenance technical field, particularly a kind of coking furnace shaft repair technology.
Background technology
Coke oven: a kind of stove that is built into by refractory brick and refractory block usually is main purpose, the horizontal-chamber type coke oven that can reclaim the coking chemistry product with production metallurgy Jiao, is made up of body of heater and auxiliary facility.Coking furnace shaft is by parts such as furnace roof, combustion chamber and coking chamber, chute district, regenerator, and links to each other with chimney through flue, and the bed rearrangement coke furnace building is on concrete foundation.
Raw gas: separate out in the dry distillation of coal process still without the gaseous product of purifying treatment; Raw gas is a tawny vapour gas mixture, and strong impulse property stink is arranged; Combustiblecomponents accounts for 95% calorific value up to 17MJ/m3 in the coke-oven gas, so combustionvelocity is fast, temperature is high, and flame is bright, and radiation capacity is strong; The coke-oven gas limits of explosion is 5%-30%, because its Lower Explosive Limit is low, and the limits of explosion scope is big, so in air, be mixed with coke-oven gas, is easy to form explosive mixed gas, meets burning things which may cause a fire disaster and is prone to blast.So coke oven will be strictly on guard against the raw gas leakage in process of production.
From the coking furnace shaft constructional feature, be vertical masonry joint around the peephole brick, along with the growth in furnace life, the expansion year by year of body of heater, the mortar in these slits is just no longer full, some empty brickwork joints progressively occur.Simultaneously because of the body of heater height to reasons such as non-homogeneous expansion are even, some empty brickwork joints also can appear between the peephole pipe brick, it is to produce the peephole place to produce and go here and there the basic reason of small opening that these brickwork joints and coking chamber connect; The generation of string small opening causes raw gas to reveal, thereby further causes raw gas waste, generation potential safety hazard and environmental pollution.
At present, the treatment process of most of coke oven string small openings is to adopt the method for smearing benefit to repair.But, adopt the method for smearing benefit to repair and an end of string small opening can only be carried out shutoff, and can not the string small opening is stifled fully real; So along with the use of coke oven, the position of smearing benefit can reappear the string small opening again in about about one month, need repeat to smear benefit.
Times without number the string small opening of coke oven is smeared benefit, not only workload is big, the wasting manpower and material resources, and smear benefit repeatedly, after string leaks repeatedly, the slit at string small opening position can progressively increase, it is more and more serious to cause the string of raw gas to leak phenomenon; Simultaneously, the position of string small opening appears in furnace roof raises gradually, causes furnace roof to be uneven, and is unfavorable for the carrying out that produces.
Therefore, traditional processing mode exists the shutoff time short, and labor strength is big, handles untimely to problems such as the furnace roof infringement are big.
So, how to provide a kind of repair efficiency good, and the coking furnace shaft repair technology that can reduce the manpower and materials of repairing is the important technological problems that those skilled in the art need solve at present.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of coking furnace shaft repair technology, its repair efficiency is good, and can reduce the manpower and materials of repairing.
For solving the problems of the technologies described above, the present invention provides following technical scheme:
A kind of coking furnace shaft repair technology comprises step:
Punching gets out the grout hole that is communicated with brickwork joint at the brickwork joint place;
The spray material sprays into refractory mortar to said grout hole through using shotcrete machine.
Preferably, in the said step spray material, the spraying pressure scope of said shotcrete machine is 0.1kg-1.5kg.
Preferably, said refractory mortar specifically is the clay chamotte.
Preferably, the water-content of said clay chamotte is 50%, and the weight percent of water glass is 5%.
Preferably, it is characterized in that: the degree of depth of said grout hole is 30cm, and the shower nozzle of said shotcrete machine stretches into the inner 5cm of grout hole.
Preferably, also comprise step behind the said step spray material:
Mud jacking, the internal pressure of shotcrete machine act on the refractory mortar of spraying to brickwork joint and the grout hole, impel refractory mortar compacting under high pressure conditions.
Preferably, in the said step mud jacking, the spraying pressure scope of said shotcrete machine is 1.5kg-2.0kg.
Preferably, also comprise step before the said step spray material:
Pressurization, the industrial pressurized air of exporting through equipment such as air compressor is pressed into the gas in the gas-holder in the shotcrete machine.
Relative above-mentioned background technology, coking furnace shaft repair technology provided by the present invention, through punch out step, the grout hole of drilling and being communicated with brickwork joint at the brickwork joint place; Through spray material step, refractory mortar is spurted in the brickwork joint then.Since before shotcrete machine spray material, the grout hole that the repairing personnel of coking furnace shaft have drilled and have been communicated with brickwork joint at the brickwork joint place through punch out step, and also in the spray material step, refractory mortar can be filled whole brickwork joint through grout hole, and repair efficiency is fine; And; Owing to adopt coking furnace shaft repair technology provided by the invention directly to repair the brickwork joint that produces the string small opening, after the repairing, small opening can not appear going here and there in coking furnace shaft again in for a long time; Reduce the repairing frequency, can reduce the input of manpower and materials in the repairing of coking furnace shaft effectively.
So, coking furnace shaft repair technology provided by the invention, its repair efficiency is good, and can reduce the manpower and materials of repairing.
In further technical scheme, also comprise the step mud jacking behind the said step spray material; Mud jacking compresses the refractory mortar that is sprayed onto shotcrete machine substantial.The mud jacking step can guarantee to call the roll of the contestants in athletic events in the mending course of body of heater, and refractory mortar can enrich brickwork joint effectively, makes the repairing of coking furnace shaft have better effect.
Description of drawings
The schema of the coking furnace shaft repair technology that Fig. 1 provides for the embodiment of the invention one;
The schema of the coking furnace shaft repair technology that Fig. 2 provides for the embodiment of the invention two;
The schema of the coking furnace shaft repair technology that Fig. 3 provides for the embodiment of the invention three;
Fig. 4 is the metallurgy that provided in the embodiment of the invention repair procedure synoptic diagram with the process furnace repair technology.
Embodiment
Core of the present invention provides a kind of metallurgy process furnace repair technology, and its remediation efficiency is higher, and repair efficiency is better.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1 and Fig. 4, the schema of the coking furnace shaft repair technology that Fig. 1 provides for the embodiment of the invention one; Fig. 4 is the metallurgy that provided in the embodiment of the invention repair procedure synoptic diagram with the process furnace repair technology.
The metallurgy that the embodiment of the invention one provides process furnace repair technology comprises:
Step 101: punching:
The grout hole of drilling out and being communicated with brickwork joint at the brickwork joint place of coking furnace shaft; Can directly the brickwork joint that causes the peephole place to produce the root position of string small opening be opened; Thereby be convenient to refractory mortar is directly charged in the brickwork joint of coking furnace shaft; Thereby solve the string small opening from root, improve the effect that coking furnace shaft is repaired.
Step 102: spray material;
Adopt shotcrete machine to spray material, refractory mortar is sprayed into brickwork joint; Like this, can effectively prevent the obstruction of condensing that refractory mortar produces in the process that gets into brickwork joint, the brickwork joint that causes producing the string small opening all can be filled, guarantee the effect that coking furnace shaft is repaired.
Further, shotcrete machine is in spray material process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure of shotcrete machine is controlled between the 0.1kg-1.5kg.Shotcrete machine is in the process of spray material, and its spraying pressure that has can make refractory mortar in spraying into the process of brickwork joint, have more highland impulse force, can more promptly irritate to be flushed in all brickwork joints, thereby all brickwork joints are all filled.
Particularly, the refractory mortar that adopts in the coking furnace shaft mending course is the clay chamotte.
The clay chamotte, formulated by chamotte and soft clay, wedding agent and admixture; Its size range is generally 0-0.5mm, and 0.5-0.074mm accounts for 50%, accounts for 50% less than 0.074mm.
The clay chamotte is the seam that is used for clay brick masonry, and boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit etc. are with the seam and the repairing of clay brick masonry.
Particularly, the water-content of above-mentioned clay chamotte is 50%, and the weight percent of water glass is 5%.
More specifically, the degree of depth of the grout hole of being drilled in the step punching of mentioning in the technique scheme is 30cm, and the shower nozzle of shotcrete machine stretches into the inner 5cm of grout hole.
The shower nozzle of shotcrete machine is extend in the grout hole, can more effectively refractory mortar be sprayed in the brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
Please refer to Fig. 2 and Fig. 4, the schema of the coking furnace shaft repair technology that Fig. 2 provides for the embodiment of the invention two; Fig. 4 is the metallurgy that provided in the embodiment of the invention repair procedure synoptic diagram with the process furnace repair technology.
The coking furnace shaft repair technology that the embodiment of the invention two provides comprises:
Step 201: punching;
The grout hole of drilling out and being communicated with brickwork joint at the brickwork joint place of coking furnace shaft; Can directly the brickwork joint that causes the peephole place to produce the root position of string small opening be opened; Thereby be convenient to refractory mortar is directly charged in the brickwork joint of coking furnace shaft; Thereby solve the string small opening from root, improve the effect that coking furnace shaft is repaired.
Step 202: spray material;
Adopt shotcrete machine to spray material, refractory mortar is sprayed into brickwork joint; Like this, can effectively prevent the obstruction of condensing that refractory mortar produces in the process that gets into brickwork joint, the brickwork joint that causes producing the string small opening all can be filled, guarantee the effect that coking furnace shaft is repaired.
Step 203: mud jacking;
Shotcrete machine is after step spray material is accomplished, and the internal pressure of shotcrete machine continues to strengthen, and the internal pressure of shotcrete machine acts on the refractory mortar in brickwork joint and the grout hole, makes that the refractory mortar in brickwork joint and the grout hole has certain pressure; Thereby the refractory mortar in brickwork joint and the grout hole will pour into the refractory mortar compacting in the brickwork joint under the effect of shotcrete machine pressure inside, guarantee the space in the brickwork joint is filled, and strengthen the effect that coking furnace shaft is repaired, and guarantee the perfection that coking furnace shaft is repaired.
Further, shotcrete machine is in spray material process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure with shotcrete machine is controlled between the 0.1kg-1.5kg.Shotcrete machine is in the process of spray material, and its spraying pressure that has can make refractory mortar in spraying into the process of brickwork joint, have more highland impulse force, can more promptly irritate to be flushed in all brickwork joints, thereby all brickwork joints are all filled.
Particularly, in the process of step mud jacking, the spraying pressure of shotcrete machine is controlled between the 1.5kg-2.0kg, is higher than the spraying pressure of shotcrete machine in step spray material, make that the refractory mortar in brickwork joint and the grout hole has certain pressure; Thereby the refractory mortar in brickwork joint and the grout hole will pour into the refractory mortar compacting in the brickwork joint under the effect of shotcrete machine pressure inside, guarantee the space in the brickwork joint is filled, and strengthen the effect that coking furnace shaft is repaired.
More specifically, the refractory mortar that adopts in the coking furnace shaft mending course is the clay chamotte.
The clay chamotte, formulated by chamotte and soft clay, wedding agent and admixture; Its size range is generally 0-0.5mm, and 0.5-0.074mm accounts for 50%, accounts for 50% less than 0.074mm.
The clay chamotte is the seam that is used for clay brick masonry, and boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit etc. are with the seam and the repairing of clay brick masonry.
Particularly, the water-content of above-mentioned clay chamotte is 50%, and the weight percent of water glass is 5%.
More specifically, the degree of depth of the grout hole of being drilled in the step punching of mentioning in the technique scheme is 30cm, and the shower nozzle of shotcrete machine stretches into the inner 5cm of grout hole.
The shower nozzle of shotcrete machine is extend in the grout hole, can more effectively refractory mortar be sprayed in the brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
Please refer to Fig. 3 and Fig. 4, the schema of the coking furnace shaft repair technology that Fig. 3 provides for the embodiment of the invention three; Fig. 4 is the metallurgy that provided in the embodiment of the invention repair procedure synoptic diagram with the process furnace repair technology.
The coking furnace shaft repair technology that the embodiment of the invention three provides comprises:
Step 301: punching;
The grout hole of drilling out and being communicated with brickwork joint at the brickwork joint place of coking furnace shaft; Can directly the brickwork joint that causes the peephole place to produce the root position of string small opening be opened; Thereby be convenient to refractory mortar is directly charged in the brickwork joint of coking furnace shaft; Thereby solve the string small opening from root, improve the effect that coking furnace shaft is repaired.
Step 302: spray material;
Adopt shotcrete machine to spray material, refractory mortar is sprayed into brickwork joint; Like this, can effectively prevent the obstruction of condensing that refractory mortar produces in the process that gets into brickwork joint, the brickwork joint that causes producing the string small opening all can be filled, guarantee the effect that coking furnace shaft is repaired.
Step 303: mud jacking;
Shotcrete machine is after step spray material is accomplished, and the internal pressure of shotcrete machine continues to strengthen, and the internal pressure of shotcrete machine acts on the refractory mortar in brickwork joint and the grout hole, makes that the refractory mortar in brickwork joint and the grout hole has certain pressure; Thereby the refractory mortar in brickwork joint and the grout hole will pour into the refractory mortar compacting in the brickwork joint under the effect of shotcrete machine pressure inside, guarantee the space in the brickwork joint is filled, and strengthen the effect that coking furnace shaft is repaired, and guarantee the perfection that coking furnace shaft is repaired.
Step 304: pressurization;
Industrial pressurized air through the output of air compressor machine or miscellaneous equipment is pressed into the inside of shotcrete machine with the high pressure gas in the gas-holder, utilizes and than high atmospheric pressure refractory mortar is outwards carried ejection by shotcrete machine inside through shower nozzle.The pressurization operation can provide source pressure for shotcrete machine, thereby guarantee that shotcrete machine can spray into refractory mortar in the brickwork joint, and brickwork joint filled substantial.
Need to prove that step punching does not have tangible sequencing with the step pressurization, can carry out simultaneously, can successively carry out yet, look concrete working condition and decide.
Further, shotcrete machine is in spray material process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure with shotcrete machine is controlled between the 0.1kg-1.5kg.Shotcrete machine is in the process of spray material, and its spraying pressure that has can make refractory mortar in spraying into the process of brickwork joint, have more highland impulse force, can more promptly irritate to be flushed in all brickwork joints, thereby all brickwork joints are all filled.
Particularly, in the process of step mud jacking, the spraying pressure of shotcrete machine is controlled between the 1.5kg-2.0kg, is higher than the spraying pressure of shotcrete machine in step spray material, make that the refractory mortar in brickwork joint and the grout hole has certain pressure; Thereby the refractory mortar in brickwork joint and the grout hole will pour into the refractory mortar compacting in the brickwork joint under the effect of shotcrete machine pressure inside, guarantee the space in the brickwork joint is filled, and strengthen the effect that coking furnace shaft is repaired.
More specifically, the refractory mortar that adopts in the coking furnace shaft mending course is the clay chamotte.
The clay chamotte, formulated by chamotte and soft clay, wedding agent and admixture; Its size range is generally 0-0.5mm, and 0.5-0.074mm accounts for 50%, accounts for 50% less than 0.074mm.
The clay chamotte is the seam that is used for clay brick masonry, and boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit etc. are with the seam and the repairing of clay brick masonry.
Particularly, the water-content of above-mentioned clay chamotte is 50%, and the weight percent of water glass is 5%.
More specifically, the degree of depth of the grout hole of being drilled in the step punching of mentioning in the technique scheme is 30cm, and the shower nozzle of shotcrete machine stretches into the inner 5cm of grout hole.
The shower nozzle of shotcrete machine is extend in the grout hole, can more effectively refractory mortar be sprayed in the brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
More than coking furnace shaft repair technology provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. coking furnace shaft repair technology is characterized in that: comprise step:
Punching gets out the grout hole that is communicated with brickwork joint at the brickwork joint place;
The spray material sprays into refractory mortar to said grout hole through using shotcrete machine.
2. coking furnace shaft repair technology according to claim 1 is characterized in that: in the said step spray material, the spraying pressure scope of said shotcrete machine is 0.1kg-1.5kg.
3. coking furnace shaft repair technology according to claim 2 is characterized in that: said refractory mortar specifically is the clay chamotte.
4. coking furnace shaft repair technology according to claim 3 is characterized in that: the water-content of said clay chamotte is 50%, and the weight percent of water glass is 5%.
5. according to the described coking furnace shaft repair technology of claim 1-4, it is characterized in that: it is characterized in that: the degree of depth of said grout hole is 30cm, and the shower nozzle of said shotcrete machine stretches into the inner 5cm of grout hole.
6. coking furnace shaft repair technology according to claim 5 is characterized in that: also comprise step behind the said step spray material:
Mud jacking, the internal pressure of shotcrete machine act on the refractory mortar of spraying to brickwork joint and the grout hole, impel refractory mortar compacting under high pressure conditions.
7. coking furnace shaft repair technology according to claim 6 is characterized in that: in the said step mud jacking, the spraying pressure scope of said shotcrete machine is 1.5kg-2.0kg.
8. coking furnace shaft repair technology according to claim 7 is characterized in that: also comprise step before the said step spray material:
Pressurization, the industrial pressurized air of exporting through equipment such as air compressor is pressed into the gas in the gas-holder in the shotcrete machine.
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| CN2011102273781A CN102304367B (en) | 2011-08-09 | 2011-08-09 | Coke oven body mending process |
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| CN2011102273781A CN102304367B (en) | 2011-08-09 | 2011-08-09 | Coke oven body mending process |
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| CN102304367A true CN102304367A (en) | 2012-01-04 |
| CN102304367B CN102304367B (en) | 2013-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105694920A (en) * | 2016-04-14 | 2016-06-22 | 莱芜市泰山焦化有限公司 | Method for repairing inter-leakage of silicon carbide brick walls of coke oven regenerative chamber in production |
| CN106738312A (en) * | 2017-01-09 | 2017-05-31 | 安徽临涣化工有限责任公司 | A kind of coke oven flue healant proportioner |
| CN107312556A (en) * | 2017-07-21 | 2017-11-03 | 中冶焦耐(大连)工程技术有限公司 | A kind of brick gas passage mud jacking encapsulating method |
| CN111750688A (en) * | 2020-06-17 | 2020-10-09 | 莱芜钢铁集团建筑安装工程有限公司 | Method for treating air leakage of furnace and kiln |
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| CN1430018A (en) * | 2001-12-30 | 2003-07-16 | 张云海 | Method of sealing cyclone boiler prechamber boiler wall |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694920A (en) * | 2016-04-14 | 2016-06-22 | 莱芜市泰山焦化有限公司 | Method for repairing inter-leakage of silicon carbide brick walls of coke oven regenerative chamber in production |
| CN106738312A (en) * | 2017-01-09 | 2017-05-31 | 安徽临涣化工有限责任公司 | A kind of coke oven flue healant proportioner |
| CN107312556A (en) * | 2017-07-21 | 2017-11-03 | 中冶焦耐(大连)工程技术有限公司 | A kind of brick gas passage mud jacking encapsulating method |
| CN107312556B (en) * | 2017-07-21 | 2020-03-27 | 中冶焦耐(大连)工程技术有限公司 | Grouting sealing method for brick gas duct |
| CN111750688A (en) * | 2020-06-17 | 2020-10-09 | 莱芜钢铁集团建筑安装工程有限公司 | Method for treating air leakage of furnace and kiln |
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| CN102304367B (en) | 2013-11-27 |
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