CN102304367B - Coke oven body mending process - Google Patents
Coke oven body mending process Download PDFInfo
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- CN102304367B CN102304367B CN2011102273781A CN201110227378A CN102304367B CN 102304367 B CN102304367 B CN 102304367B CN 2011102273781 A CN2011102273781 A CN 2011102273781A CN 201110227378 A CN201110227378 A CN 201110227378A CN 102304367 B CN102304367 B CN 102304367B
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- coke oven
- refractory mortar
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- grout hole
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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 coke oven body mending process.
Background technology
Coke oven: a kind of stove usually be built into by refractory brick and refractory block, take production metallurgy Jiao as main purpose, can reclaim the horizontal-chamber type coke oven of coking chemistry product, by body of heater and auxiliary facility, formed.Coking furnace shaft is by parts such as furnace roof, combustion chamber and coking chamber, chute district, regenerator, and is connected with chimney by flue, and the bed rearrangement coke furnace building is on concrete foundation.
Raw gas: in dry distillation of coal process, separate out not yet through the gaseous product of purifying treatment; Raw gas is tawny vapour gas mixture, and the strong impulse stink is arranged; In coke-oven gas, combustiblecomponents accounts for 95% calorific value up to 17MJ/m3, therefore 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%, and because its Lower Explosive Limit is low, and the limits of explosion scope is large, 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 easily blasts.So coke oven will be strictly on guard against the raw gas leakage in process of production.
From the coking furnace shaft constructional feature, peephole brick surrounding is vertical masonry joint, along with the growth in furnace life, and the expansion year by year of body of heater, the mortar in these gaps is just no longer full, the brickwork joint that some are empty progressively occurs.Simultaneously because body of heater is high, between peephole pipe brick, also there will be some empty brickwork joints to reasons such as non-homogeneous expansion are even, 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, cause raw gas to reveal, thereby further cause 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 to shutoff, and can not the string small opening is fully stifled 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 to repeat to smear benefit.
Repeatedly the string small opening of coke oven is smeared to benefit, not only workload is large, the wasting manpower and material resources, and repeatedly smear benefit, after string leaks repeatedly, the gap at string small opening position can progressively increase, and causes the string of raw gas to leak phenomenon more and more serious; Simultaneously, raise gradually at the position of furnace roof appearance string small opening, causes furnace roof to be uneven, and is unfavorable for the carrying out produced.
Therefore, traditional processing mode exists the shutoff time short, and labor strength is large, processes not in time to problems such as the furnace roof infringement are large.
So, how to provide a kind of repair efficiency good, and the coke oven body mending process that can reduce the manpower and materials of repairing is the important technological problems that those skilled in the art need to solve at present.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of coke oven body mending process, its repair efficiency is good, and can reduce the manpower and materials of repairing.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of coke oven body mending process comprises step:
Punching, get out the grout hole be communicated with brickwork joint at the brickwork joint place;
Material spray, spray into refractory mortar to described grout hole by using shotcrete machine;
Mud jacking, the internal pressure of shotcrete machine acts on the refractory mortar of spraying to brickwork joint and grout hole, impels refractory mortar compacting under high pressure conditions, and the spraying pressure of shotcrete machine is higher than the spraying pressure of shotcrete machine in the step material spray.
Preferably, in described step material spray, the spraying pressure scope of described shotcrete machine is 0.1kg-1.5kg.
Preferably, described refractory mortar is specifically the clay chamotte.
Preferably, the water-content of described clay chamotte is 50%, and the weight percent of water glass is 5%.
Preferably, it is characterized in that: the degree of depth of described grout hole is 30cm, and the shower nozzle of described shotcrete machine stretches into the inner 5cm of grout hole.
Preferably, in described step mud jacking, the spraying pressure scope of described shotcrete machine is 1.5kg-2.0kg.
Preferably, before described step material spray, also comprise step:
Pressurization, the industrial pressurized air of exporting by equipment such as air compressor is pressed into the gas in gas-holder in shotcrete machine.
Relative above-mentioned background technology, coke oven body mending process provided by the present invention, by punch out step, the grout hole of drilling and being communicated with brickwork joint at the brickwork joint place; Then by the material spray step, refractory mortar is spurted in brickwork joint.Due to before the shotcrete machine material spray, 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 by punch out step, and also in the material spray step, refractory mortar can be filled whole brickwork joint by grout hole, and repair efficiency is fine; And, owing to adopting coke oven body mending process provided by the invention directly to the brickwork joint that produces the string small opening, to repair, after 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 effectively reduce the input of manpower and materials in the repairing of coking furnace shaft.
So, coke oven body mending process 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 after described step material spray; Mud jacking, compress the refractory mortar that is sprayed onto shotcrete machine to enrich.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.
The accompanying drawing explanation
The schema of the coke oven body mending process that Fig. 1 provides for the embodiment of the present invention one;
The schema of the coke oven body mending process that Fig. 2 provides for the embodiment of the present invention two;
The schema of the coke oven body mending process that Fig. 3 provides for the embodiment of the present invention three;
The repair procedure schematic diagram of the repairing technology of heating furnace for metallurgy that provides in the embodiment of the present invention is provided Fig. 4.
Embodiment
Core of the present invention is to provide a kind of repairing technology of heating furnace for metallurgy, and its remediation efficiency is higher, and repair efficiency is better.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 and Fig. 4, the schema of the coke oven body mending process that Fig. 1 provides for the embodiment of the present invention one; The repair procedure schematic diagram of the repairing technology of heating furnace for metallurgy that provides in the embodiment of the present invention is provided Fig. 4.
The repairing technology of heating furnace for metallurgy that the embodiment of the present invention one provides 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 directly is filled with in the brickwork joint of coking furnace shaft, thereby from root, solve the string small opening, improve the effect that coking furnace shaft is repaired.
Step 102: material spray;
Adopt shotcrete machine to carry out material spray, refractory mortar is sprayed into to brickwork joint; Like this, the obstruction of condensing that can effectively prevent refractory mortar to produce in entering the process of brickwork joint, can all fill the brickwork joint that causes producing the string small opening, guarantees the effect that coking furnace shaft is repaired.
Further, shotcrete machine is in the material spray process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure of shotcrete machine is controlled between 0.1kg-1.5kg.Shotcrete machine is in the process of material spray, and its spraying pressure had can make refractory mortar in spraying into the process of brickwork joint, have impulse force higher, can more promptly fill with and be flushed in all brickwork joints, thereby all brickwork joints are all filled.
Particularly, the refractory mortar adopted 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%, is less than 0.074mm and accounts for 50%.
The clay chamotte is the seam for clay brick masonry, seam and the repairing of clay brick masonry such as boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit.
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 drilling in the step punching of mentioning in 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 grout hole, can more effectively refractory mortar be sprayed in brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
Please refer to Fig. 2 and Fig. 4, the schema of the coke oven body mending process that Fig. 2 provides for the embodiment of the present invention two; The repair procedure schematic diagram of the repairing technology of heating furnace for metallurgy that provides in the embodiment of the present invention is provided Fig. 4.
The coke oven body mending process that the embodiment of the present 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 directly is filled with in the brickwork joint of coking furnace shaft, thereby from root, solve the string small opening, improve the effect that coking furnace shaft is repaired.
Step 202: material spray;
Adopt shotcrete machine to carry out material spray, refractory mortar is sprayed into to brickwork joint; Like this, the obstruction of condensing that can effectively prevent refractory mortar to produce in entering the process of brickwork joint, can all fill the brickwork joint that causes producing the string small opening, guarantees the effect that coking furnace shaft is repaired.
Step 203: mud jacking;
Shotcrete machine is after the step material spray completes, 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 grout hole, makes the refractory mortar in brickwork joint and grout hole have certain pressure; Thereby, the refractory mortar in brickwork joint and grout hole, the refractory mortar compacting will pour into brickwork joint under the pressure-acting of shotcrete machine inside in, guarantee the space in brickwork joint is filled, and strengthened the effect that coking furnace shaft is repaired, and guaranteed the perfection that coking furnace shaft is repaired.
Further, shotcrete machine is in the material spray process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure of shotcrete machine is controlled between 0.1kg-1.5kg.Shotcrete machine is in the process of material spray, and its spraying pressure had can make refractory mortar in spraying into the process of brickwork joint, have impulse force higher, can more promptly fill with and 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 1.5kg-2.0kg, higher than the spraying pressure of shotcrete machine in the step material spray, makes the refractory mortar in brickwork joint and grout hole have certain pressure; Thereby, the refractory mortar in brickwork joint and grout hole, the refractory mortar compacting will pour into brickwork joint under the pressure-acting of shotcrete machine inside in, guarantee the space in brickwork joint is filled, and strengthened the effect that coking furnace shaft is repaired.
More specifically, the refractory mortar adopted 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%, is less than 0.074mm and accounts for 50%.
The clay chamotte is the seam for clay brick masonry, seam and the repairing of clay brick masonry such as boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit.
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 drilling in the step punching of mentioning in 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 grout hole, can more effectively refractory mortar be sprayed in brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
Please refer to Fig. 3 and Fig. 4, the schema of the coke oven body mending process that Fig. 3 provides for the embodiment of the present invention three; The repair procedure schematic diagram of the repairing technology of heating furnace for metallurgy that provides in the embodiment of the present invention is provided Fig. 4.
The coke oven body mending process that the embodiment of the present 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 directly is filled with in the brickwork joint of coking furnace shaft, thereby from root, solve the string small opening, improve the effect that coking furnace shaft is repaired.
Step 302: material spray;
Adopt shotcrete machine to carry out material spray, refractory mortar is sprayed into to brickwork joint; Like this, the obstruction of condensing that can effectively prevent refractory mortar to produce in entering the process of brickwork joint, can all fill the brickwork joint that causes producing the string small opening, guarantees the effect that coking furnace shaft is repaired.
Step 303: mud jacking;
Shotcrete machine is after the step material spray completes, 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 grout hole, makes the refractory mortar in brickwork joint and grout hole have certain pressure; Thereby, the refractory mortar in brickwork joint and grout hole, the refractory mortar compacting will pour into brickwork joint under the pressure-acting of shotcrete machine inside in, guarantee the space in brickwork joint is filled, and strengthened the effect that coking furnace shaft is repaired, and guaranteed the perfection that coking furnace shaft is repaired.
Step 304: pressurization;
Industrial pressurized air by air compressor machine or miscellaneous equipment output is pressed into the high pressure gas in gas-holder the inside of shotcrete machine, utilizes, than high atmospheric pressure, refractory mortar is outwards carried to ejection by shotcrete machine inside by shower nozzle.The pressurization operation, can provide source pressure for shotcrete machine, thereby guarantee that shotcrete machine can spray into refractory mortar in brickwork joint, and brickwork joint be filled substantial.
It should be noted that, the step punching there is no obvious sequencing with the step pressurization, can carry out simultaneously, also can successively carry out, depending on the specific works situation.
Further, shotcrete machine is in the material spray process, and shotcrete machine has certain spraying pressure; Particularly, the spraying pressure of shotcrete machine is controlled between 0.1kg-1.5kg.Shotcrete machine is in the process of material spray, and its spraying pressure had can make refractory mortar in spraying into the process of brickwork joint, have impulse force higher, can more promptly fill with and 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 1.5kg-2.0kg, higher than the spraying pressure of shotcrete machine in the step material spray, makes the refractory mortar in brickwork joint and grout hole have certain pressure; Thereby, the refractory mortar in brickwork joint and grout hole, the refractory mortar compacting will pour into brickwork joint under the pressure-acting of shotcrete machine inside in, guarantee the space in brickwork joint is filled, and strengthened the effect that coking furnace shaft is repaired.
More specifically, the refractory mortar adopted 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%, is less than 0.074mm and accounts for 50%.
The clay chamotte is the seam for clay brick masonry, seam and the repairing of clay brick masonry such as boiler, coke oven, interchanger, blast furnace, hotblast stove, soaking pit.
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 drilling in the step punching of mentioning in 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 grout hole, can more effectively refractory mortar be sprayed in brickwork joint, make refractory mortar brickwork joint can be filled and tamp.
Above coke oven body mending process provided by the present invention is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just be used to helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 the claims in the present invention.
Claims (2)
1. coke oven body mending process is characterized in that: comprise step:
Punching, get out the grout hole be communicated with brickwork joint at the brickwork joint place;
Material spray, spray into refractory mortar to described grout hole by using shotcrete machine;
Mud jacking, the internal pressure of shotcrete machine acts on the refractory mortar of spraying to brickwork joint and grout hole, impels refractory mortar compacting under high pressure conditions, and the spraying pressure of shotcrete machine is higher than the spraying pressure of shotcrete machine in the step material spray;
In described step material spray, the spraying pressure scope of described shotcrete machine is 0.1kg-1.5kg;
Described refractory mortar is specifically the clay chamotte;
The water-content of described clay chamotte is 50%, and the weight percent of water glass is 5%;
The degree of depth of described grout hole is 30cm, and the shower nozzle of described shotcrete machine stretches into the inner 5cm of grout hole;
In described step mud jacking, the spraying pressure scope of described shotcrete machine is 1.5kg-2.0kg.
2. coke oven body mending process according to claim 1 is characterized in that: before described step material spray, also comprise step:
Pressurization, the industrial pressurized air of exporting by air compressor device is pressed into the gas in gas-holder in shotcrete machine.
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| CN102304367B true CN102304367B (en) | 2013-11-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105694920B (en) * | 2016-04-14 | 2018-08-31 | 莱芜市泰山焦化有限公司 | Coke oven regenerator silicon carbide brick wall string leaks method for repairing and mending in production process |
| CN106738312B (en) * | 2017-01-09 | 2018-01-16 | 安徽临涣化工有限责任公司 | A kind of coke oven flue healant proportioner |
| 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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| CN1430018A (en) * | 2001-12-30 | 2003-07-16 | 张云海 | Method of sealing cyclone boiler prechamber boiler wall |
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