CN216808694U - Novel coke dry quenching furnace - Google Patents

Abstract

The utility model relates to a novel coke dry quenching furnace, which comprises a furnace top, a pre-storage section, an annular air passage, a chute, a cooling section and a discharge cone hopper, wherein a furnace cover is arranged at a furnace mouth at the top end of the furnace top, an air cap is arranged in the discharge cone hopper, the furnace cover consists of a top plate and a plunger, the plunger is inserted in the furnace mouth and is abutted against the top end of the furnace top, a plurality of lifting oil cylinders are uniformly distributed on the outer wall of the furnace top, piston rods of the lifting oil cylinders are upward and fixedly connected with the bottom surface of the top plate, a plurality of dust suction through holes are uniformly distributed on the side wall of the furnace top corresponding to the upper part of the plunger, a dust suction hood is fixedly arranged on the outer wall of the furnace top corresponding to the dust suction through holes and connected with a dust remover through dust suction pipes, a nitrogen pipe is arranged in the furnace top below the plunger, a plurality of nozzles are uniformly distributed on the inner side of the nitrogen pipe, and the outer side of the nitrogen pipe is connected with a nitrogen tank through a conveying pipeline. The utility model does not need to manually open and close the furnace cover, can form a nitrogen gas curtain to prevent the escape of the polluted gas, can effectively remove dust at the furnace mouth, can effectively break a compact coke layer, and is more environment-friendly and practical.

Description

Novel coke dry quenching furnace

Technical Field

The utility model belongs to the technical field of dry quenching, and particularly relates to a novel coke dry quenching furnace.

Background

The dry quenching process is relative to wet quenching and refers to a quenching process method for cooling red coke by adopting inert gas. In the process of the dry quenching process, red coke is loaded from the top of a dry quenching furnace, low-temperature inert gas is blown into a red coke layer of a cooling section of the dry quenching furnace by a circulating fan to absorb the sensible heat of the red coke, the cooled coke is discharged from the bottom of the dry quenching furnace, high-temperature inert gas discharged from an annular flue of the dry quenching furnace flows through a dry quenching process boiler to carry out heat exchange, the boiler generates steam, the cooled inert gas is blown into the dry quenching furnace again by the circulating fan, and the inert gas is recycled in a closed system. The dry quenching process is superior to wet quenching in energy saving, environment protection, coke quality improvement and other aspects.

At present, a traditional dry quenching furnace sequentially comprises a furnace top, a pre-storage section, an annular air flue, a chute, a cooling section and a discharging cone hopper from top to bottom, wherein a furnace cover is arranged at a furnace mouth at the top end of the furnace top, and a blast cap communicated with an inert gas conveying pipeline is erected in the discharging cone hopper. However, when the conventional dry quenching furnace is used for actual charging, the furnace cover is often manually opened, so that the operation is inconvenient and the safety is low. Meanwhile, when the furnace cover is opened, the pressure of the prestoring section is influenced by the gas pressure fluctuation at the furnace opening, so that the gas containing dust and high pollutants in the furnace easily escapes from the furnace opening, and the external environment is greatly polluted. In addition, in the process that coke flows downwards in the dry quenching furnace, the coke is extruded by the gravity of the coke on the upper part, the coke on the lower part is easy to be gradually tamped to form a coke layer with a compact structure, a channel near the blast cap is narrow, the coke often has a local downward obstruction, the discharge is not smooth, the phenomenon of collapse is caused after the coke is seriously accumulated, red coke which does not exchange heat is discharged by flowing downwards quickly, the quality of dry quenching is reduced, the great fluctuation of the pressure of a prestoring section can be caused, the dust-containing high pollutant gas in the furnace is further promoted to escape from a furnace mouth, the dry quenching furnace is not environment-friendly, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a novel coke dry quenching furnace, which can form a nitrogen curtain to prevent the escape of the polluted gas without manually opening or closing the furnace cover, and can effectively remove dust at the furnace mouth, and can effectively crush a dense coke layer through a double-rod hydraulic cylinder to solve the above problems.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a novel coke dry quenching furnace comprises a furnace top, a prestoring section, an annular air flue, a chute, a cooling section and a discharging cone hopper from top to bottom in sequence, wherein a furnace cover is arranged at a furnace mouth at the top end of the furnace top, an air cap is erected in the discharging cone hopper, the furnace cover consists of a top plate and a plunger coaxially arranged at the bottom of the top plate, the plunger is inserted in the furnace mouth at the top end of the furnace top and abuts against the top end of the furnace top, a plurality of lifting oil cylinders are uniformly distributed on the outer wall of the furnace top corresponding to the circumferential side of the bottom surface of the top plate at intervals, and piston rods of the lifting oil cylinders are upward and fixedly connected with the bottom surface of the top plate; a plurality of dust suction through holes are uniformly distributed on the side wall of the furnace top corresponding to the upper part of the plunger at intervals on the circumference, an annular dust suction cover is fixedly sleeved on the outer wall of the furnace top corresponding to the dust suction through holes, the dust suction cover is connected with a dust remover through a dust suction pipe, an annular nitrogen pipe is arranged in the furnace top below the plunger, a plurality of nozzles are uniformly distributed on the inner side of the nitrogen pipe at intervals on the circumference, and the outer side of the nitrogen pipe is connected with a nitrogen tank through a conveying pipeline extending out of the furnace top; the inner wall of the discharging cone bucket corresponding to the circumferential side of the upper portion of the blast cap is uniformly provided with a plurality of transverse supporting plates at intervals, the transverse supporting plates are vertically provided with double-rod hydraulic cylinders in a penetrating mode, two piston rods of the double-rod hydraulic cylinders stretch synchronously, piston rods of two adjacent double-rod hydraulic cylinders stretch alternately, and the tail ends of the two piston rods of the double-rod hydraulic cylinders are provided with cone tips.

Preferably, the diameter of the top plate is larger than the outer diameter of the top end of the furnace top, and the plunger is matched with the inner diameter of the top end of the furnace top.

Preferably, a dust suction fan is arranged on the dust suction pipe.

Preferably, an air pump is arranged on the conveying pipeline.

Preferably, a plurality of crushing blades are arranged on the cone tip.

The utility model has the beneficial effects that: the dry quenching furnace has the advantages that the design is reasonable, the structure is simple, the whole furnace cover can be automatically driven to lift through the expansion of the piston rod of the lifting oil cylinder, the opening and closing of the furnace mouth of the furnace top are realized in a matched mode, the opening and closing of the furnace cover are not required to be manually controlled, the operation is simpler and more convenient, the safety is higher, the sealing performance of the furnace mouth can be better ensured through the insertion connection of the plunger and the furnace mouth, and the normal use and the work of the dry quenching furnace are not influenced;

thereby when the control bell rises to open the fire door and feed, the operation air pump, alright carry the nitrogen gas in with the nitrogen gas jar for the nitrogen gas pipe through conveying line to spout through the nozzle, thereby can form nitrogen gas air curtain in furnace roof department, when not influencing red burnt downward flow, can effectively block the upwards flow of the interior dusty high pollutant gas of stove, avoid it from escaping outside the fire door, environmental protection more. Meanwhile, the dust collection fan is operated, so that dust generated during red coke feeding can be collected into the dust remover through the arrangement and the matching of the dust collection through hole, the dust collection cover and the dust collection pipe, thereby effectively preventing smoke from being generated at a furnace mouth, further reducing the leakage of polluted gas in the furnace, and being more beneficial to environmental protection and the health of maintenance workers;

in addition, each double-rod hydraulic cylinder is operated, two piston rods of the same double-rod hydraulic cylinder are enabled to synchronously extend and retract, piston rods of two adjacent double-rod hydraulic cylinders alternately extend and retract, in the process that coke flows downwards, the piston rods on the upper portions of the double-rod hydraulic cylinders and the conical tips on the piston rods are utilized to perform primary crushing and loosening treatment on a compact coke layer, the loose coke is crushed again by the transverse support plates, the loose coke is further crushed by the piston rods on the lower portions of the double-rod hydraulic cylinders, a compact material layer is difficult to form again, namely, the phenomenon that the coke is blocked, stacked and even collapsed when being unloaded can be effectively avoided, the smooth and stable unloading and the quality of dry quenching coke can be ensured, the escape of high-pollution gas in the coke oven can be further effectively prevented, and the whole dry quenching oven is more environment-friendly and practical.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 4 is a schematic top view of the nitrogen gas pipe of the present invention.

Reference numbers in the figures: the device comprises a furnace top 1, a prestoring section 2, an annular air passage 3, a chute 4, a cooling section 5, a discharging cone hopper 6, a furnace cover 7, a top plate 701, a plunger 702, a lifting oil cylinder 8, a dust suction through hole 9, a dust suction hood 10, a dust suction pipe 11, a dust suction fan 12, a dust remover 13, a nitrogen pipe 14, a nozzle 15, a conveying pipeline 16, an air pump 17, a nitrogen tank 18, a hood 19, a cross support plate 20, a double-rod hydraulic cylinder 21, a cone tip 22 and a crushing blade 23.

Detailed Description

The utility model is described in further detail below with reference to the following figures and detailed description:

as shown in fig. 1 to 4, a novel coke dry quenching furnace comprises a furnace top 1, a prestoring section 2, an annular air flue 3, a chute 4, a cooling section 5 and a discharging cone hopper 6 from top to bottom in sequence, wherein a furnace cover 7 is arranged at a furnace mouth at the top end of the furnace top 1, and a blast cap 19 is erected in the discharging cone hopper 6. The furnace lid 7 is composed of a top plate 701 and a plunger 702 coaxially provided at the bottom of the top plate 701, the plunger 702 is inserted into the top furnace opening of the furnace roof 1 and the top plate 701 abuts on the top end of the furnace roof 1. A plurality of lifting oil cylinders 8 are uniformly distributed on the outer wall of the furnace top 1 corresponding to the periphery of the bottom surface of the top plate 701 at intervals in a circumferential manner, and piston rods of the lifting oil cylinders 8 face upwards and are fixedly connected with the bottom surface of the top plate 701, so that when the furnace top is used, the whole furnace cover 7 can be automatically driven to lift through the expansion and contraction of the piston rods of the lifting oil cylinders 8, the opening and closing of a furnace mouth of the furnace top 1 are realized in a matched manner, the opening and closing of the furnace cover 7 are not required to be manually controlled, the operation is simpler and more convenient, the safety is higher, the sealing performance of the furnace mouth can be better ensured through the insertion of the plunger 702 and the furnace mouth, and the normal use and work of a dry quenching furnace are not influenced;

a plurality of dust suction through holes 9 are uniformly distributed on the side wall of the furnace top 1 corresponding to the upper part of the plunger 702 at intervals on the circumference, an annular dust suction cover 10 is fixedly sleeved on the outer wall of the furnace top 1 corresponding to the dust suction through holes 9, and the dust suction cover 10 is connected with a dust remover 13 through a dust suction pipe 11. An annular nitrogen pipe 14 is arranged in the furnace top 1 below the plunger 702, a plurality of nozzles 15 are evenly distributed on the inner side of the nitrogen pipe 14 at intervals on the circumference, and the outer side of the nitrogen pipe is connected with a nitrogen tank 18 through a conveying pipeline 16 extending out of the furnace top 1. When the furnace cover 7 is controlled to rise so as to open the furnace mouth for charging, nitrogen in the nitrogen tank 18 can be conveyed to the nitrogen pipe 14 through the conveying pipeline 16 and sprayed out through the nozzle 15, so that a nitrogen gas curtain can be formed at the furnace top 1, the upward flow of the gas containing dust and high pollutants in the furnace can be effectively blocked while the downward flow of red coke is not influenced, the gas is prevented from escaping from the furnace mouth, and the furnace is more environment-friendly. Meanwhile, through the arrangement and the matching of the dust suction through hole 9, the dust suction cover 10 and the dust suction pipe 11, dust generated during red coke feeding can be collected into the dust remover 13, so that smoke can be effectively prevented from being generated at a furnace mouth, the leakage of polluted gas in the furnace is further reduced, and the environment protection and the health of maintenance workers are facilitated. The dust remover 13 adopts the prior art;

a plurality of horizontal support plates 20 are uniformly distributed on the inner wall of the discharging conical hopper 6 corresponding to the upper peripheral side of the blast cap 19 at intervals, and a double-rod hydraulic cylinder 21 vertically penetrates through the horizontal support plates 20. Two piston rods of the double-rod hydraulic cylinder 21 extend synchronously, piston rods of two adjacent double-rod hydraulic cylinders 21 extend alternately, and the tail ends of the two piston rods of the double-rod hydraulic cylinder 21 are provided with conical tips 22. When in use, the double-rod hydraulic cylinders 21 are operated, so that the two piston rods of the same double-rod hydraulic cylinder 21 are synchronously stretched and the piston rods of the two adjacent double-rod hydraulic cylinders 21 are alternately stretched, and in the process that coke flows downwards, the piston rod at the upper part of the double-rod hydraulic cylinder 21 and the conical tip 22 on the piston rod are used for carrying out primary crushing and loosening treatment on the compact coke layer, the horizontal support plate 20 is used for crushing the loosened coke again, the piston rod at the lower part of the double-rod hydraulic cylinder 21 and the conical tip 22 on the piston rod are used for further crushing the loosened coke, so that the coke is difficult to form a compact material layer again, namely, the triple crushing and loosening treatment of the coke can effectively avoid the phenomena of blocking, accumulation and even collapse when the coke is unloaded, can ensure the smooth and stable unloading and the quality of dry quenching, and further effectively prevent the escape of high pollution gas in the furnace, so that the whole dry quenching furnace is more environment-friendly and practical. The double-rod hydraulic cylinder 21 is prior art and will not be described in detail herein.

In this embodiment, the diameter of the top plate 701 is larger than the outer diameter of the top end of the furnace roof 1, and the plunger 702 is matched with the inner diameter of the top end of the furnace roof 1 so as to ensure the normal lifting opening and closing of the whole furnace cover 7 and the sealing of the furnace opening.

In this embodiment, the dust suction fan 12 is provided on the dust suction pipe 11 to better perform the dust removal operation. An air pump 17 is provided on the delivery line 16 to better deliver nitrogen.

In this embodiment, the cone tip 22 is provided with a plurality of crushing blades 23, which can further enhance the crushing effect of the cone tip 22 and ensure the crushing and dredging quality of the dense coke layer.

The working principle of the utility model is as follows: during the use, move lift cylinder 8 earlier, make its piston rod extension, alright drive whole bell 7 and rise, make plunger 702 extract from the fire door, alright open the fire door, carry out the operation of feeding, through the flexible of lift cylinder 8's piston rod promptly, can drive whole bell 7 automatically and go up and down, thereby the cooperation realizes opening and close to the fire door of furnace roof 1, need not the opening and close of artifical manual control bell 7, the operation is simple more convenient, the security is higher, and can more guarantee the leakproofness to the fire door through the grafting of plunger 702 with the fire door, do not influence the normal use and the work of dry quenching stove.

During charging, the air pump 17 is operated, so that nitrogen in the nitrogen tank 18 can be conveyed to the nitrogen pipe 14 through the conveying pipeline 16 and is sprayed out through the nozzle 15, and a nitrogen gas curtain can be formed at the top 1 of the furnace, so that the upward flow of the dust-containing high-pollutant gas in the furnace can be effectively blocked while the downward flow of red coke is not influenced, the gas is prevented from escaping from the furnace mouth, and the environment is protected. Meanwhile, when the dust collection fan 12 is operated, dust generated during feeding of red coke can be collected into the dust remover 13 through the arrangement and matching of the dust collection through hole 9, the dust collection cover 10 and the dust collection pipe 11, so that smoke can be effectively prevented from being generated at a furnace mouth, the leakage of polluted gas in the furnace is further reduced, and the environment protection and the body health of maintenance workers are facilitated.

In addition, when the double-rod hydraulic cylinders 21 are operated, the two piston rods of the same double-rod hydraulic cylinder 21 can synchronously extend and retract, and the piston rods of the two adjacent double-rod hydraulic cylinders 21 can alternately extend and retract, so that in the process of downward flowing of coke, the piston rod at the upper part of the double-rod hydraulic cylinder 21 and the conical tip 22 on the piston rod are used for carrying out primary crushing and loosening treatment on the compact coke layer, the horizontal support plate 20 is used for crushing the loosened coke again, the piston rod at the lower part of the double-rod hydraulic cylinder 21 and the conical tip 22 on the piston rod are used for further crushing the loosened coke, so that the coke is difficult to form a compact material layer again, namely, the triple crushing and loosening treatment of the coke can effectively avoid the phenomena of blocking, accumulation and even collapse when the coke is unloaded, can ensure the smooth and stable unloading and the quality of dry quenching, and further effectively prevent the escape of high pollution gas in the furnace, so that the whole dry quenching furnace is more environment-friendly and practical.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. A novel coke dry quenching furnace comprises a furnace top, a prestoring section, an annular air flue, a chute, a cooling section and an unloading cone hopper from top to bottom in sequence, wherein a furnace cover is arranged at a furnace mouth at the top end of the furnace top, and an air cap is erected in the unloading cone hopper; a plurality of dust suction through holes are uniformly distributed on the side wall of the furnace top corresponding to the upper part of the plunger at intervals on the circumference, an annular dust suction cover is fixedly sleeved on the outer wall of the furnace top corresponding to the dust suction through holes, the dust suction cover is connected with a dust remover through a dust suction pipe, an annular nitrogen pipe is arranged in the furnace top below the plunger, a plurality of nozzles are uniformly distributed on the inner side of the nitrogen pipe at intervals on the circumference, and the outer side of the nitrogen pipe is connected with a nitrogen tank through a conveying pipeline extending out of the furnace top; the inner wall of the discharging cone bucket corresponding to the circumferential side of the upper portion of the blast cap is uniformly provided with a plurality of transverse supporting plates at intervals, the transverse supporting plates are vertically provided with double-rod hydraulic cylinders in a penetrating mode, two piston rods of the double-rod hydraulic cylinders stretch synchronously, piston rods of two adjacent double-rod hydraulic cylinders stretch alternately, and the tail ends of the two piston rods of the double-rod hydraulic cylinders are provided with cone tips.

2. The coke dry quenching furnace as claimed in claim 1, wherein the diameter of the top plate is larger than the outer diameter of the top end of the furnace top, and the plunger is adapted to the inner diameter of the top end of the furnace top.

3. The coke dry quenching furnace as claimed in claim 1, wherein a dust suction fan is provided on the dust suction pipe.

4. The coke dry quenching furnace as claimed in claim 1, wherein an air pump is provided on the conveying pipeline.

5. The coke dry quenching furnace as claimed in claim 1, wherein the cone tip is provided with a plurality of crushing blades.

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