CN107936987A - A kind of oven top of coke oven maintaining method and refractory gunning equipment - Google Patents

A kind of oven top of coke oven maintaining method and refractory gunning equipment Download PDF

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Publication number
CN107936987A
CN107936987A CN201711307646.4A CN201711307646A CN107936987A CN 107936987 A CN107936987 A CN 107936987A CN 201711307646 A CN201711307646 A CN 201711307646A CN 107936987 A CN107936987 A CN 107936987A
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CN
China
Prior art keywords
slurry
furnace roof
pipe
coke oven
outlet
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CN201711307646.4A
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Chinese (zh)
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CN107936987B (en
Inventor
治兴伟
刘建迅
李国军
毕贞斌
李明
何志强
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Shandong Iron and Steel Group Co Ltd SISG
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Shandong Iron and Steel Group Co Ltd SISG
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B29/00Other details of coke ovens
    • C10B29/06Preventing or repairing leakages of the brickwork

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The invention discloses a kind of oven top of coke oven maintaining method, including step:1) furnace roof surface irregularities are cleared up;2) mortar modulated is injected in the furnace roof surface, and makes the furnace roof surfacing after completion whitewashing.The oven top of coke oven maintaining method can targetedly be sprayed to the position for needing to mend slurry, effectively reduced mortar and tied layer in the brick body of furnace roof surface, thus the slurry used in furnace roof whitewashing mode is less, and economy is more preferable;In addition, under the action of pressure is sprayed, adhesive capacity of the slurry on furnace roof relevant position is stronger, it is possible to prevente effectively from coming off and peeling off for pulp layer, extends the maintenance period of oven top of coke oven.The invention also discloses a kind of refractory gunning equipment being used in above-mentioned oven top of coke oven maintaining method.

Description

A kind of oven top of coke oven maintaining method and refractory gunning equipment
Technical field
The present invention relates to Coke-oven Maintenance technical field, more particularly to a kind of oven top of coke oven maintaining method and refractory gunning equipment.
Background technology
Coke oven is a kind of stove being usually built into by refractory brick and refractory block, is mainly used for coal by destructive distillation, charing And coke is produced, it is the main Thermal Equipment of coking.Coking furnace shaft is mainly by furnace roof, combustion chamber and carbonization chamber, chute area, accumulation of heat The part such as room is formed, and furnace roof is located at the top of whole coke oven, has motorcycle track and charging car to walk back and forth thereon, hole of coalingging, Peephole and rise pore etc., the carbonization chamber and combustion chamber top layer generally use clay brick in furnace roof region, common brick and insulating brick into Row is built by laying bricks or stones, to ensure coke oven seal in use and good heat insulating effect.
But due to coke oven bear throughout the year high temperature, coaling, cold and hot violent change, the various effects such as mechanical force and physical-chemical reaction, The problems such as causing chipping furnace roof masonry, loosening, faulting of slab ends, depression, with the extension in furnace life, furnace roof masonry produced problem is more Add seriously, this just needs periodically to safeguard furnace roof, to eliminate furnace roof masonry hidden danger, ensures coke oven heating effect.
An important approach is exactly furnace roof grouting in oven top of coke oven maintenance, i.e., periodically uses a certain proportion of clay mud Be modulated into the mud of flow-like, points three to five layers furnace top surface is included furnace roof brickwork joint, charging hole seat gap, peephole seat gap and Tie rod ditch crack etc. is in the milk, and furnace roof surface is reached smooth.In furnace roof grouting, cleared up first with instruments such as scoops dry Debris such as net furnace roof surface tar, graphite, then with compress wind that the purgings such as furnace roof coke powder, coal dust is clean, expose brickwork joint, then The mortar modulated is poured over furnace roof surface, is finally put down back and forth using whisk broom.
Such a method is primarily present some following problem:1st, mortar wastes serious, and a big chunk mortar is finally in furnace roof The surface knot layer of brick body, causes to waste;2nd, grouting quality is poor, and furnace roof table plane is finally difficult to reach the smooth of requirement after grouting Degree and mortar bed is insecure, is easily peeled off, comes off.
The content of the invention
In view of this, it is an object of the present invention to providing a kind of maintaining method of oven top of coke oven, effectively to save On the premise of saving mortar, additionally it is possible to furnace roof surface smoothness and mortar adhesiving effect are improved, so that improving oven top of coke oven safeguards matter Amount.
Another object of the present invention, which also resides in, provides refractory gunning equipment used in a kind of above-mentioned oven top of coke oven maintaining method.
In order to achieve the above object, oven top of coke oven maintaining method provided by the present invention, including step:
1) furnace roof surface irregularities are cleared up;
2) mortar modulated is injected in the furnace roof surface, and makes the furnace roof surfacing after completion whitewashing.
Preferably, specifically included in the step 2):
21) to carrying out mortar injection at the gap on the furnace roof surface, 1~3 layer of the number of plies is sprayed;
22) mortar injection is carried out to remaining position on the furnace roof surface, and makes the furnace roof surfacing.
Preferably, 4~5 layers of mortar are sprayed on the furnace roof surface.
Disclosed in this invention refractory gunning equipment, in above-mentioned oven top of coke oven maintaining method, including:
Slurry can, the slurry can are used to store the mortar modulated, and the slurry can is provided with Grouting Pipe and grout outlet;
Madjack pipe, the madjack pipe are used to compress to the slurry can delivered inside with connecting inside the slurry can Gas;
Spray boom, is provided with nozzle on the spray boom, and the nozzle includes the slurry outlet connected with the grout outlet, and with The madjack pipe connects and is used for the air outlet for dispelling slurry.
Preferably, the spray boom includes outer hollow pipe, and the internal layer hollow pipe being nested in inside the outer hollow pipe, Described internal layer hollow pipe one end is connected with the slurry outlet, and the other end is connected with the grout outlet;The internal layer hollow pipe with Ring cavity between the outer hollow pipe forms gas passage, and described gas passage one end is connected with the air outlet, the other end Connected with the madjack pipe.
Preferably, extend a gas service pipe on the madjack pipe, be provided with the outer hollow pipe and the gas The interface of passage connection, the gas service pipe are connected with the interface by rubber hose.
Preferably, a slurry outlet is provided with the nozzle, the slurry outlet is clear opening;The outlet air Mouthful have multiple, and the air outlet is evenly arranged around the slurry outlet, and the air outlet is inclined via-hole, and all institutes State the same point on the excessively described slurry outlet axis of axis of air outlet.
Preferably, funnel-form grouting port is additionally provided with the top of the Grouting Pipe.
Preferably, the slurry can includes tank body, and the head cover being connected with the tank flange, is also set up on the head cover There are pressure gauge and pressure relief opening.
Preferably, further include and be arranged on the tank body, and close to the overflow port of the head cover.
As can be seen from the above technical solutions, disclosed in this invention oven top of coke oven maintaining method in, first to furnace roof The debris on surface is cleared up, and after completing the cleaning of furnace roof surface impurity, the mortar modulated is injected in furnace roof surface, and make Complete the furnace roof surfacing after whitewashing., can be targetedly to needing to mend for traditional furnace roof grouting way The position of slurry is sprayed, and is effectively reduced mortar and is tied layer, thus the slurry used in furnace roof whitewashing mode in the brick body of furnace roof surface Less, economy is more preferable;In addition, under the action of pressure is sprayed, adhesive capacity of the slurry on furnace roof relevant position is stronger, can Effectively to avoid coming off and peeling off for pulp layer, extend the maintenance period of oven top of coke oven.
Disclosed in this invention refractory gunning equipment, pressure is applied into slurry can by madjack pipe, under the effect of the pressure Slurry in slurry can will be flowed out from the slurry outlet of spray boom, since the air outlet on spray boom is connected with madjack pipe, and madjack pipe The interior compressed gas higher with pressure, therefore under the action of compressed gas, slurry is dispelled, so as to reach pulp jets Purpose on oven top of coke oven surface.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of the oven top of coke oven maintaining method disclosed in the embodiment of the present invention;
Fig. 2 is the structure diagram of the refractory gunning equipment (removal spray boom) disclosed in the embodiment of the present invention;
Fig. 3 is the structure diagram of the spray boom disclosed in the embodiment of the present invention;
Fig. 4 is the structure diagram of the nozzle disclosed in the embodiment of the present invention.
Marked in attached drawing as follows:
1 is switch valve, and 2 be slurry can, and 3 be madjack pipe, and 4 be Grouting Pipe, and 5 be grout outlet, and 6 be pressure relief opening, and 7 be overflow Mouthful, 8 be pressure gauge, and 9 be gas service pipe, and 10 be funnel-form grouting port, and 11 be internal layer hollow pipe, and 12 be outer hollow pipe, and 13 are Gas passage, 14 be interface, and 15 be nozzle, and 21 be tank body, and 22 be head cover, and 151 be slurry outlet, and 152 be air outlet.
Embodiment
One of core of the present invention is to provide a kind of maintaining method of oven top of coke oven, so as to before effectively mortar is saved Put, additionally it is possible to furnace roof surface smoothness and mortar adhesiving effect are improved, so as to improve oven top of coke oven maintenance quality.
Another core of the present invention, which also resides in, provides refractory gunning equipment used in a kind of above-mentioned oven top of coke oven maintaining method.
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work Embodiment, belongs to the scope of protection of the invention.
Disclosed in this invention oven top of coke oven maintaining method in, mainly include the following steps that:
1) furnace roof surface irregularities are cleared up;2) mortar modulated is injected in the furnace roof surface, and make completion whitewash after The furnace roof surfacing.
Need to illustrate, clear up the step of furnace roof surface irregularities generally include impurity cleaning and impurities purging, it is miscellaneous Usually the impurity such as the tar on furnace roof surface, graphite are cleaned out by cleaning tools such as scoop, cutters in matter scale removal process;It is miscellaneous Matter purging mainly blows gas to furnace roof, clean so as to which the particulate contaminants such as the coke powder of furnace roof, coal dust are purged.
After the cleaning for completing furnace roof surface irregularities, you can carry out mortar injection, more specifically, please refer to Fig.1, complete Step S1) after, step is carried out first:S21) to carrying out mortar injection at the gap on furnace roof surface, the position weight of injection is started Point is the gap positions such as spray repair brickwork joint, and the injection number of plies of mortar is 1 layer to 3 layers.Nozzle 15 is apart from furnace roof table in course of injection Face 150mm~200mm, every layer of thickness equal can not also can wait, and every layer of mortar thickness is no more than 3mm, people in the art Member is appreciated that in course of injection that it is one layer uniformly to spray one time, then repeats the injection for carrying out the second layer, third layer;So After carry out step:22) injection of mortar is carried out to remaining position on furnace roof surface, in order to levelling whole furnace roof surface, To make furnace roof surfacing, the injection number of plies of remaining position of furnace roof surface is 1 layer~2 layers, thus, oven top of coke oven maintenance process 4~5 layers of mortar are sprayed altogether in middle furnace roof surface.
For traditional furnace roof grouting way, above-mentioned oven top of coke oven maintaining method can be targetedly to needs The position for mending slurry is sprayed, and is effectively reduced mortar and is tied layer, thus the slurry used in furnace roof whitewashing mode in the brick body of furnace roof surface Material is less, and economy is more preferable;In addition, under the action of pressure is sprayed, adhesive capacity of the slurry on furnace roof relevant position is stronger, It is possible to prevente effectively from coming off and peeling off for pulp layer, extends the maintenance period of oven top of coke oven.
In addition, refractory gunning equipment used in a kind of above-mentioned oven top of coke oven maintaining method is also disclosed in the present invention, The refractory gunning equipment includes at least slurry can 2, madjack pipe 3 and spray boom, and slurry can 2 is used to store the mortar modulated, slurry can 2 On be provided with for irrigating the Grouting Pipe 4 of slurry inside slurry can 2, and the grout outlet 5 for flowing out slurry, such as institute in Fig. 2 Show;Madjack pipe 3 is connected with the inside of grout outlet 5, and madjack pipe 3 is used to be connected with compressed gas, so as to by the slurry in slurry can 2 Extrude, it is generally the case that workshop can all use compressed air, therefore madjack pipe 3 can connect with compressed air line in workshop Connect;Nozzle 15 is provided with spray boom, the slurry outlet 151 connected with grout outlet 5 is provided with nozzle 15, and connect with madjack pipe 3 Logical air outlet 152, as shown in Figures 3 and 4, the high-speed gas that air outlet 152 is blown out will can be flowed out by slurry outlet 151 Slurry dispel, so as to be injected on furnace roof relevant position.
According to workload size, the amount of capacity of slurry can 2 can carry out accommodation, the storage in the embodiment of the present invention Slurry tank 2 is cylinder, and a diameter of 500mm of the cylinder, is highly 800mm, it is contemplated that the convenience of 2 internal cleaning of slurry can, this Slurry can 2 in embodiment specifically includes tank body 21 and head cover 22, and head cover 22, by flanged joint, is dismantled with lid with facilitating. Certainly, need to set gasket at the link position of head cover 22 and tank body 21, to ensure the leakproofness of slurry can 2, Grouting Pipe 4, Madjack pipe 3 is arranged on head cover 22.Further, irrigated in order to facilitate slurry into slurry can 2, the top of Grouting Pipe 4 It is provided with funnel-form grouting port 10.
It will be appreciated to those of skill in the art that switch valve should be set on Grouting Pipe 4, grout outlet 5 and madjack pipe 3 1。
Fig. 3 and Fig. 4 are please also refer to, the spray boom disclosed in the present embodiment specifically includes outer hollow pipe 12, and nested Internal layer hollow pipe 11 in outer layer hollow pipe 12, one end of internal layer hollow pipe 11 are connected with slurry outlet 151, and the other end is with going out Slurry pipe 5 connects, the ring cavity formation gas passage 13 between internal layer hollow pipe 11 and outer hollow pipe 12, and the one of the gas passage 13 End is connected with air outlet 152, and the other end is connected with madjack pipe 3.The The concrete specification of internal layer hollow pipe 11 and outer hollow pipe 12 is not It is restricted, can be needed to select appropriate size according to actual ejection, in the present embodiment, a diameter of 10mm of boring pipe, outside A diameter of 25mm of portion's hollow pipe, the length of whole spray boom is 2m or so, more specifically, extends a gas on madjack pipe 3 Body branch pipe 9, is also equipped with switch valve 1 on the gas service pipe 9, as shown in Figure 2, is provided with outer hollow pipe 12 and leads to gas The interface 14 that road 13 connects, as shown in Figure 3, gas service pipe 9 is connected with interface 14 by rubber hose.
Slurry in slurry can 2 will be flowed out by internal layer hollow pipe 11 from slurry outlet 151, and compressed gas is through gas service pipe 9 and gas passage 13 sprayed from air outlet 152, slurry is dispelled rapidly and nebulized by high-speed flow, and vaporific slurry will be injected in On furnace roof relevant position.
The quantity of 15 spreading mass of nozzle outlet 151 can be one or more, please refer to Fig.4, in the present embodiment, nozzle A slurry outlet 151 is provided with 15, the slurry outlet 151 be specially clear opening, air outlet 152 have it is multiple, it is multiple go out Air port 152 is evenly arranged around slurry outlet 151, and air outlet 152 is inclined via-hole, and the axis of all air outlets 152 is equal By the same point on 151 axis of slurry outlet, that is to say, that the air-out direction of each air outlet 152 aligns slurry and goes out Same point on 151 axis of mouth, the point have many places high-speed flow to cross, and so as to form turbulent flow, turbulent flow can be rapidly by slurry Dispel, ensure that slurry has preferable jeting effect.In the present embodiment, air outlet 152 is 6, the diameter of slurry outlet 151 For 10mm, a diameter of 3mm of air outlet 152, certainly, according to actual needs, the diameter of slurry outlet 151 and air outlet 152 It can carry out accommodation.
Please refer to Fig.2, in order to ensure safety of the slurry can 2 when using and storing, also set on the head cover 22 of slurry can 2 Pressure gauge 8 and pressure relief opening 6 are equipped with, certainly, switch valve 1 is also equipped with pressure relief opening 6.
When slurry is irrigated into slurry can 2, very inconvenient observation slurry liquid level, for this reason, also in tank body in the present embodiment The overflow port 7 with switch valve 1 is provided with 21, which to be set close to head cover 22, when there is slurry spilling in overflow port 7 When, show that the slurry in slurry can 2 is already filled with, should stop continuing to irrigate.Spacing between overflow port 7 and head cover 22 should It is designed according to actual conditions, in embodiments of the present invention, the spacing between overflow port 7 and head cover 22 is 50mm.
Using disclosed in this invention refractory gunning equipment carry out operation when, first confirm that valve is located everywhere in refractory gunning equipment In closed mode, the switch valve 1 at Grouting Pipe 4 and overflow port 7 is then opened, the mortar modulated is passed through into funnel-form slip casting Mouthfuls 10 inject in slurry cans 2, when overflow port 7 has slurry outflow, stop slip casting, and close opening at Grouting Pipe 4 and overflow port 7 Close valve 1.
Madjack pipe 3 is connected with the compressed gas pipeline of production scene, the interface 14 on spray boom is passed through with gas service pipe 9 Rubber hose connects, and the internal layer hollow stem on spray boom is connected with grout outlet 5, then one human hand held spray boom of operating personnel, will spray First 15 start to whitewash towards the furnace roof surface for treating spray repair, nozzle 15 apart from furnace roof 150mm-200mm, preparation;An other operation Personnel open the switch valve 1 on gas branch, the switch valve 1 on madjack pipe 3 and the switch valve 1 on grout outlet 5 successively, slurry Material is sprayed from spraying, and operator can uniformly move nozzle 15 and carry out spray operation at this time.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one The most wide scope caused.

Claims (10)

1. a kind of oven top of coke oven maintaining method, it is characterised in that including step:
1) furnace roof surface irregularities are cleared up;
2) mortar modulated is injected in the furnace roof surface, and makes the furnace roof surfacing after completion whitewashing.
2. oven top of coke oven maintaining method according to claim 1, it is characterised in that specifically included in the step 2):
21) to carrying out mortar injection at the gap on the furnace roof surface, 1~3 layer of the number of plies is sprayed;
22) mortar injection is carried out to remaining position on the furnace roof surface, and makes the furnace roof surfacing.
3. oven top of coke oven maintaining method according to claim 1 or 2, it is characterised in that the furnace roof surface injection 4~5 The layer mortar.
A kind of 4. refractory gunning equipment, in the oven top of coke oven maintaining method as described in claim 1-3 any one, its feature to exist In, including:
Slurry can (2), the slurry can (2) are used to store the mortar modulated, and the slurry can (2) is provided with Grouting Pipe (4) With grout outlet (5);
Madjack pipe (3), the madjack pipe (3) are used for internal to the slurry can (2) with being connected inside the slurry can (2) Convey compressed gas;
Spray boom, nozzle (15) is provided with the spray boom, and the slurry that the nozzle (15) includes connecting with the grout outlet (5) goes out Mouth (151), and the air outlet (152) for dispelling slurry is connected and is used for the madjack pipe (3).
5. refractory gunning equipment according to claim 4, it is characterised in that the spray boom includes outer hollow pipe (12), and embedding The internal internal layer hollow pipe (11) of the outer hollow pipe (12) is sleeved on, described internal layer hollow pipe (11) one end goes out with the slurry Mouth (151) connection, the other end are connected with the grout outlet (5);The internal layer hollow pipe (11) and the outer hollow pipe (12) Between ring cavity form gas passage (13), described gas passage (13) one end connects with the air outlet (152), the other end and Madjack pipe (3) connection.
6. refractory gunning equipment according to claim 5, it is characterised in that extend a gas service pipe on the madjack pipe (3) (9), the interface (14) connected with the gas passage (13), the gas service pipe are provided with the outer hollow pipe (12) (9) it is connected with the interface (14) by rubber hose.
7. refractory gunning equipment according to claim 5, it is characterised in that be provided with a slurry on the nozzle (15) Export (151), the slurry outlet (151) is clear opening;The air outlet (152) has multiple, and the air outlet (152) It is evenly arranged around the slurry outlet (151), the air outlet (152) is inclined via-hole, and all air outlets (152) Excessively described slurry outlet (151) axis of axis on same point.
8. refractory gunning equipment according to claim 4, it is characterised in that be additionally provided with funnel at the top of the Grouting Pipe (4) Shape grouting port (10).
9. refractory gunning equipment according to claim 4, it is characterised in that the slurry can (2) includes tank body (21), and with institute The head cover (22) of tank body (21) flanged joint is stated, pressure gauge (8) and pressure relief opening (6) are additionally provided with the head cover (22).
10. refractory gunning equipment according to claim 9, it is characterised in that further include and be arranged on the tank body (21), and lean on The overflow port (7) of the nearly head cover (22).
CN201711307646.4A 2017-12-11 2017-12-11 Coke oven top maintenance method and guniting device Active CN107936987B (en)

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Application Number Priority Date Filing Date Title
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CN109652100A (en) * 2019-01-15 2019-04-19 五冶集团上海有限公司 A method of being overhauled based on 6 meters of oven top of coke oven improves production environment
CN114720248A (en) * 2022-03-29 2022-07-08 中国华电科工集团有限公司 A kind of slurry multi-stage rotation comprehensive measurement method and device

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Publication number Priority date Publication date Assignee Title
CN109652100A (en) * 2019-01-15 2019-04-19 五冶集团上海有限公司 A method of being overhauled based on 6 meters of oven top of coke oven improves production environment
CN109652100B (en) * 2019-01-15 2021-03-30 五冶集团上海有限公司 Method for improving production environment based on 6-meter coke oven top overhaul
CN114720248A (en) * 2022-03-29 2022-07-08 中国华电科工集团有限公司 A kind of slurry multi-stage rotation comprehensive measurement method and device

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