CN218755581U - Slurry plugging device for sealing coal feeding port of coke oven - Google Patents
Slurry plugging device for sealing coal feeding port of coke oven Download PDFInfo
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- CN218755581U CN218755581U CN202223454367.XU CN202223454367U CN218755581U CN 218755581 U CN218755581 U CN 218755581U CN 202223454367 U CN202223454367 U CN 202223454367U CN 218755581 U CN218755581 U CN 218755581U
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Abstract
The utility model provides a mud plugging device for sealing a coal feeding port of a coke oven, which comprises a mud storage tank, a mud pump, a mud conveying pipeline, an air compression system, a compressed air conveying pipeline, an automatic pipe coiling disc, a mud pouring hose and a cylindrical mud nozzle, wherein a mud outlet of the mud storage tank is connected with the mud pump, and a mud outlet of the mud pump is connected with a mud inlet of the side wall of the mud storage tank through the mud conveying pipeline; air compression system is connected with compressed air pipeline, compressed air pipeline and mud pipeline parallel arrangement to be connected with mud pipeline through a plurality of tee joints that the interval set up, on whole or some tie points between them, automatic reelpipe dish passes through the tee joint and is connected with mud pipeline, waters the thick liquid hose and winds on automatic reelpipe dish, and goes out mud mouth and connect cylindric mud shower nozzle. The device can replace manual sealing, runs continuously and compactly, does not influence the normal coke pushing and coal charging operation of the coke oven, and can avoid the unorganized discharge of VOCs generated in the operation process.
Description
Technical Field
The utility model belongs to the technical field of coke oven equipment, in particular to a mud plugging device for sealing a coal feeding port of a coke oven.
Background
The coking coal continuously generates raw coke oven gas in the high-temperature carbonization process of the coke oven. The raw gas contains a large amount of volatile organic compounds, and the raw gas escapes to the atmosphere from a coal feeding port at the top of the furnace, so that environmental pollution is caused.
In order to reduce the influence of raw gas dissipation on the surrounding environment when the coal charging port at the top of the furnace is not tightly closed, a method of manually pouring slurry is generally adopted. The operation process is as follows: the method comprises the following steps that a coke oven top worker uses thick slurry which is stirred manually to mix with a small amount of coal powder, the slurry is poured into a diversion trench between a coal charging port furnace cover and a furnace ring by a spoon to be blocked, because the slurry is very thick, after the slurry is poured, the slurry is baked at high temperature, so that a large amount of mixture of graphite and slurry is accumulated between the coal charging port furnace cover and the furnace ring, and the mixture is thicker, so that the smoke generation phenomenon of the coal charging port for two times or more is formed, the coke oven top worker needs to brush the slurry repeatedly, the slurry accumulated on the edges of the coal charging port furnace ring and the furnace cover is very thick and is agglomerated, and the sealing performance of the coal charging port in the next cycle operation is influenced; not only increases the labor burden, but also does not achieve the ideal plugging effect, causes serious unorganized discharge of VOCs, has obvious visual pollution, and has become a key point for restricting the coking sustainable development.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to solve the defects of the prior art, the utility model provides a mud plugging device for coke oven coal feeding mouth is sealed, the device can replace artifical sealed, and whole plugging process operation links up, is compact, neither influences the normal coke pushing, the coal charging operation of coke oven, can avoid again that the operation process produces VOCs inorganization and discharges.
The technical scheme is as follows: the utility model provides a mud plugging device for sealing a coal feeding port of a coke oven, which comprises a mud storage tank, a mud pump, a mud conveying pipeline, an air compression system, a compressed air conveying pipeline, an automatic pipe coiling disc, a mud pouring hose and a cylindrical mud sprayer, wherein a mud outlet of the mud storage tank is connected with the mud pump, and a mud outlet of the mud pump is connected with a side wall mud inlet of the mud storage tank through the mud conveying pipeline; the air compression system is connected with a compressed air conveying pipeline, the compressed air conveying pipeline is arranged in parallel with the slurry conveying pipeline, a plurality of tee joints are arranged at intervals and connected with the slurry conveying pipeline, the automatic pipe coiling disc is connected with the slurry conveying pipeline through the tee joints on all or part of connection points of the air compression system and the slurry conveying pipeline, the slurry pouring hose is coiled on the automatic pipe coiling disc, and the slurry outlet is connected with a cylindrical slurry spray head.
As preferred or specific embodiments:
and a ball valve is also arranged on a pipeline connecting the mud outlet of the mud storage tank and the mud inlet of the mud pump.
And a pipeline filter is arranged on the slurry conveying pipeline between a sludge outlet of the slurry pump and a first connecting point of the compressed air conveying pipeline and the slurry conveying pipeline.
And a one-way valve is arranged on the slurry conveying pipeline after the last connecting point of the compressed air conveying pipeline and the slurry conveying pipeline.
The mud pump is a centrifugal mud pump; the air compression system comprises an air compressor, a pipeline, a joint and a pressure regulating valve.
The mud plugging device further comprises a crank limit switch which is fixedly installed at the position of coke side mud pipeline channel steel opposite to each hole carbonization chamber, and the circuit of the crank limit switch is connected with a high-low pressure ammonia water switching signal in a PLC program of a carbonization chamber pressure adjusting system or an ammonia water switching system.
The automatic tube coiling disc is arranged on the coke side edge part of the top of the coke oven and is positioned at the center of 3-5 oven distances.
The cylindrical slurry spray head comprises a hose connector, a spray head shell and a cylindrical slurry spraying channel, wherein the spray head shell is hollow, one end of the spray head shell is the hose connector, the other end of the spray head shell is the cylindrical slurry spraying channel, and the spray head shell and the other end of the spray head shell are communicated.
Has the beneficial effects that: compared with the prior art, the utility model discloses the device has following advantage:
(1) The slurry is conveyed through a pipeline and sprayed to a sprayed surface for condensation by using a centrifugal slurry pump and compressed air, so that a compact interlayer is formed, a gap between a furnace cover of a coal feeding port at the top of the coke oven and a furnace ring is not tightly sealed to generate a raw coke oven gas overflow part, and a compact sealing layer is formed by spraying the slurry to prevent the raw coke oven gas from overflowing.
(2) The slurry is conveyed by adopting compressed air low-pressure high-speed vortex airflow, and the material flow is uniform and stable.
(3) The coal feeding port furnace ring and the furnace cover almost have no attachments, do not crack, have good sealing effect and do not need secondary plugging.
(4) The slurry sealing operation and the high-low pressure ammonia water switching realize interlocking, and the low-pressure ammonia water can be sprayed in time after plugging is finished.
(5) The installation and operation of the plugging device are independent of the coal charging car, the operation time of the coal charging car is not occupied, and the plugging device is suitable for the working condition of coke oven operation.
Drawings
Fig. 1 is the structure schematic diagram of the slurry plugging device of the present invention.
Fig. 2 is the schematic structural diagram of the cylindrical slurry nozzle in the slurry plugging device of the present invention.
Fig. 3 is the schematic diagram of the position of the automatic pipe coiling disk in the slurry plugging device of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Examples
A mud plugging device for sealing a coal feeding port of a coke oven is shown in figure 1 and comprises a mud storage tank 1, a mud pump 2, a mud conveying pipeline 3, an air compression system 4, a compressed air conveying pipeline 5, an automatic pipe coiling disc 6, a mud pouring hose 7 and a cylindrical mud spray head 8, wherein a mud outlet of the mud storage tank 1 is connected with the mud pump 2, and a mud outlet of the mud pump 2 is connected with a mud inlet on the side wall of the mud storage tank 1 through the mud conveying pipeline 3; air compression system 4 is connected with compressed air pipeline 5, compressed air pipeline 5 and mud pipeline 3 parallel arrangement to be connected with mud pipeline 3 through a plurality of tee joints that the interval set up, on whole or partial tie point between them, automatic reelpipe dish 6 is connected with mud pipeline 3 through the tee joint, waters thick liquid hose 7 and convolutes on automatic reelpipe dish 6, and goes out the mud mouth and connect cylindric mud shower nozzle 8.
A ball valve 31 is arranged on a pipeline connecting the mud outlet of the mud storage tank 1 and the mud inlet of the mud pump 2.
On the slurry conveying pipeline 3, a pipeline filter 32 is arranged between a slurry outlet of the slurry pump 2 and a first connecting point of the compressed air conveying pipeline 5 and the slurry conveying pipeline 3, and a check valve 33 is further arranged behind the last connecting point.
The slurry pump 2 is a centrifugal slurry pump; the air compression system 4 includes an air compressor, a pipe, a joint, and a pressure regulating valve.
The slurry plugging device further comprises a crank limit switch which is fixedly installed at the position of coke side slurry pipeline channel steel right opposite to each hole carbonization chamber, and a circuit of the crank limit switch is connected with a high-low pressure ammonia water switching signal in a PLC program of a carbonization chamber pressure adjusting system or an ammonia water switching system.
The automatic tube coiling disc 6 is arranged on the coke side edge part of the top of the coke oven and is positioned at the center of 3-5 oven distances.
As shown in fig. 2, the cylindrical slurry nozzle 8 includes a hose connector 81, a nozzle housing 82 and a cylindrical slurry spraying passage 83, the nozzle housing 82 is hollow, one end of the nozzle housing is the hose connector 81, the other end of the nozzle housing is the cylindrical slurry spraying passage 83, and the two are communicated.
Some specific embodiments of the apparatus are as follows:
1. slurry storage tank
The slurry storage tank is cylindrical, and a bottom outlet is connected to the centrifugal slurry pump through a slurry conveying pipeline.
2. Air compression system
The compressed air pipeline comprises a pipeline, a pressure regulating valve, a quick connector and the like. The pressure of a compressed air source is set to be between 0.3 and 0.6MPa, the compressed air is conveyed to a guniting pipeline behind the centrifugal pump through a hard pipeline, and the pressure is set to be between 0.2 and 0.3MPa through a pressure regulating valve, so that the function of cleaning a slurry pipeline is achieved.
3. Slurry conveying pipeline
The slurry conveying pipeline consists of a centrifugal slurry pump, an anti-adhesion hose, a fixed pipeline, a quick connector and the like, wherein the anti-adhesion hose is treated by special materials inside the centrifugal slurry pump.
The centrifugal slurry pump is a straight-through rotor type non-caking material cavity, and has smooth discharging, high efficiency and time saving.
The quick interface is compressed by four-point elastic compensation, the sealing effect is good, and the service life is long; after compressed air enters a slurry conveying pipeline, low-pressure high-speed vortex airflow conveying is adopted, the problems of bonding of a spray head part, pipe blockage, pulse separation, folding and the like in material conveying are solved, and material flow is uniform, continuous and stable.
The anti-bonding hose is placed in the groove steel groove to prevent the anti-bonding hose from sinking. The channel steel is welded on the coke side furnace column, and the lining is made of heat insulation cotton.
The end of the pipeline is provided with a spring pressure one-way valve, and when the guniting is not carried out, the mud liquid opens the one-way valve through pressure and flows back to the mud storage tank.
4. Automatic pipe coiling disc
As shown in fig. 3, the automatic pipe coiling disc is arranged on the coke side edge part of the top of the coke oven, and when the coke oven is in 5-2 series, the automatic pipe coiling disc is arranged at the positions with the centers of 3#, 8# … … and 5 oven ranges; when the coke oven is in 2-1 series, the automatic pipe coiling disc is arranged at the positions with 2.5#, 6.5#, 10.5# … … equal to 4 oven pitches as the center. The method comprises the steps that a slurry pouring hose which is about 17 meters long (adjusted according to the actual size of a coke oven) is rolled up on an automatic pipe coiling disc, when a coal feeding port needs to be sealed by slurry pouring, an operator conducts slurry pouring operation on the needed coal feeding port by pulling the hose and a slurry pouring spray gun on the automatic pipe coiling disc, and after the slurry pouring operation is finished, a slurry pouring spray head is placed on a special hook beside the automatic pipe coiling disc. The slurry-casting hose on one automatic reel pipe can cast all the coal-feeding ports in the range of 5 or 4 furnace numbers.
5. Slurry nozzle (Cylinder nozzle)
The slurry pouring nozzle adopts a cylindrical nozzle, and the discharge elbow nozzle is a cylindrical structure device, so that the sprayed slurry is in a cylindrical state, is suitable for free and rapid flow in a shallow trench of a joint part of the furnace cover and the furnace ring, forms a better pressing effect on the crude gas flow emitted from the coal feeding opening cover, and has the advantages of good sealing effect, high quality and less slurry overflow. The shell is provided with a slurry outlet switch, the slurry spraying channel is opened for slurry spraying when the slurry outlet switch is pressed, and the slurry outlet switch is released, so that the slurry spraying pipeline is closed.
6. Interlocking device with ammonia water switching system
And a crank limit switch is fixedly arranged at the coke side slurry pipeline channel steel part opposite to each hole carbonization chamber by using screws. The crank limit switch circuit is connected with a high-low pressure ammonia water switching signal in a PLC program of the carbonization chamber pressure adjusting system or the ammonia water switching system. After the slurry pouring operation is finished each time, the furnace top operator presses the crank of the crank limit switch, the switch sends a signal, the power supply is switched on, and the high-pressure ammonia water corresponding to the furnace number is switched to the low-pressure ammonia water for spraying.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A mud plugging device for sealing a coal feeding port of a coke oven is characterized by comprising a mud storage tank (1), a mud pump (2), a mud conveying pipeline (3), an air compression system (4), a compressed air conveying pipeline (5), an automatic pipe coiling disc (6), a mud pouring hose (7) and a cylindrical mud nozzle (8), wherein a mud outlet of the mud storage tank (1) is connected with the mud pump (2), and a mud outlet of the mud pump (2) is connected with a mud inlet of the side wall of the mud storage tank (1) through the mud conveying pipeline (3); air compression system (4) are connected with compressed air pipeline (5), compressed air pipeline (5) and mud pipeline (3) parallel arrangement to be connected through a plurality of tee joints that the interval set up and mud pipeline (3), on whole or partial tie point between them, automatic reelpipe dish (6) are connected with mud pipeline (3) through the tee joint, it is convoluteed on automatic reelpipe dish (6) to water thick liquid hose (7), and cylindric mud shower nozzle (8) are connected to the mud mouth.
2. The mud plugging device for sealing the coal feeding port of the coke oven according to claim 1, wherein a ball valve (31) is further arranged on a pipeline connecting the mud outlet of the mud storage tank (1) and the mud inlet of the mud pump (2).
3. The device for blocking the coal feeding port of the coke oven according to claim 1, wherein a pipeline filter (32) is arranged on the slurry conveying pipeline (3) between the slurry outlet of the slurry pump (2) and the first connecting point of the compressed air conveying pipeline (5) and the slurry conveying pipeline (3).
4. The device for blocking the coal feeding port of the coke oven according to claim 1, wherein a check valve (33) is further arranged on the slurry conveying pipeline (3) after the last connecting point of the compressed air conveying pipeline (5) and the slurry conveying pipeline (3).
5. The mud plugging device for the coke oven coal port seal as claimed in claim 1, wherein said mud pump (2) is a centrifugal type mud pump; the air compression system (4) comprises an air compressor, a pipeline, a joint and a pressure regulating valve.
6. The mud plugging device for sealing the coal charging port of the coke oven as claimed in claim 1, further comprising a crank limit switch fixedly installed at the coke side mud pipeline channel steel opposite to the coking chamber of each hole, wherein the circuit of the crank limit switch is connected with high and low pressure ammonia water switching signals in the PLC program of the pressure regulating system of the coking chamber or the ammonia water switching system.
7. The mud plugging device for sealing the coal feeding port of the coke oven according to claim 1, wherein the automatic pipe coiling disc (6) is arranged on the coke side edge part of the coke oven top and is positioned at the center of 3-5 oven pitches.
8. The mud plugging device for sealing the coal feeding port of the coke oven as claimed in claim 1, wherein the cylindrical mud nozzle (8) comprises a hose connector (81), a nozzle shell (82) and a cylindrical guniting channel (83), the nozzle shell (82) is hollow, one end of the nozzle shell is the hose connector (81), the other end of the nozzle shell is the cylindrical guniting channel (83), and the two are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223454367.XU CN218755581U (en) | 2022-12-23 | 2022-12-23 | Slurry plugging device for sealing coal feeding port of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223454367.XU CN218755581U (en) | 2022-12-23 | 2022-12-23 | Slurry plugging device for sealing coal feeding port of coke oven |
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| Publication Number | Publication Date |
|---|---|
| CN218755581U true CN218755581U (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223454367.XU Active CN218755581U (en) | 2022-12-23 | 2022-12-23 | Slurry plugging device for sealing coal feeding port of coke oven |
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| CN (1) | CN218755581U (en) |
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- 2022-12-23 CN CN202223454367.XU patent/CN218755581U/en active Active
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