Recycling system for discharging, dust collecting and waste gas of calcined coke
By improving the dust collection system for calcined coke discharge, and utilizing staggered flow dividers and preheated combustion of waste gas, the problems of unutilized waste gas and poor dust collection during the discharge process of calcined coke were solved, achieving efficient dust collection and waste gas reuse, and meeting environmental protection production requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-03-27
AI Technical Summary
The waste gas generated during the discharge of calcined coke is not fully utilized and the dust collection effect is poor, resulting in secondary dust problems and making it difficult to meet the requirements of environmental protection production.
A system for reusing exhaust gas from calcined coke discharge dust collection was designed. By improving the connection between the pulse bag dust collector and the discharge pipe, the dust collection and conveying pipeline and the staggered diversion plate are used to accelerate the entry of flying dust into the dust collection path. The exhaust gas is preheated and then participates in the combustion of volatiles. Finally, the waste heat is recovered and denitrification and desulfurization are carried out in the waste heat boiler.
It improves dust collection efficiency, avoids secondary dust, realizes the reuse of waste gas and meets environmental protection production requirements, thus satisfying environmental standards.
Smart Images
Figure CN121739765A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of calcined coke waste gas utilization system, and particularly relates to a calcined coke discharge dust collection waste gas recycling system. BACKGROUND
[0002] Calcined coke is a deep processing product of petroleum coke after high-temperature calcination treatment, and its composition is mainly carbon, which is a high-purity and stable carbon material. The carbonaceous raw material is added into the calcination tank of the tank-type calcination furnace by the furnace top feeding device, and moves from top to bottom under the action of gravity and is heated by the flue located on both sides of the material tank. The fuel is burned in the flue, and the heat is indirectly transferred to the raw material through the flue wall. When the temperature of the raw material reaches 350-600 DEG C, a large amount of volatile is released, which is collected through the volatile channel and sent to the flue for combustion to provide additional heat for calcination. After the raw material completes the physical and chemical changes above 1200-1300 DEG C, the final calcined coke is formed and discharged from the discharge device at the bottom of the furnace.
[0003] The calcined coke discharge and conveying process will produce part of the waste gas, which contains coke powder, part of hydrogen sulfide gas, carbon monoxide gas and a small amount of combustible gas. Some calcined coke production workshops generally use pulse type bag dust collector to collect dust during the discharging process, but the treated gas is not fully utilized, and the industrial waste volume is also increased. In addition, although the discharge dust collection pipeline can achieve the effect of conveying dust, since the dust is collected directly from the position of the vibrating discharge chute, a lot of blocky calcined coke is directly carried away, the dust collection effect is poor, and secondary dust problem occurs at the end of the discharge, i.e. the packing / car loading position, which is not conducive to meeting the environmental protection operation requirements. SUMMARY
[0004] The present application is directed to the technical problems existing in the above-mentioned calcined coke discharge dust collection, and proposes a calcined coke discharge dust collection waste gas recycling system which is reasonable in design, good in dust collection effect, conducive to avoiding secondary dust, has recycling ability and is conducive to meeting the environmental protection production requirements.
[0005] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the calcined coke discharging dust collection waste gas recycling system provided by the present application comprises a tank type calcining furnace and a pulse type bag dust collector, the tank type calcining furnace comprises a calcining tank, a hot air inlet, a multilayer flue and a flue, a discharging pipe is arranged on the discharging side of the tank type calcining furnace, a dust collection conveying pipeline connected with the pulse type bag dust collector is arranged on the discharging side of the discharging pipe, the dust collection conveying pipeline comprises a plate box and a box cover, a plurality of discharging ports distributed at intervals are arranged on the bottom of the plate box, a discharging hopper is arranged at the discharging port, the side of the discharging hopper is communicated with the discharging pipe, a waste discharging pipe is arranged on the waste discharging side of the pulse type bag dust collector, the waste discharging pipe is connected with the hot air inlet, a vertical flue is arranged in the tank type calcining furnace, the vertical flue is communicated with the bottom layer of the multilayer flue, and a waste heat boiler is arranged on the output side of the flue.
[0006] Preferably, the bottom surface of the plate box is a concave arc surface, a staggered port flow dividing plate extending in a wave shape along the length direction of the plate box is arranged on the concave arc surface, the inside of the plate box is divided into two left and right chambers by the staggered port flow dividing plate, and adjacent discharging ports are located in different chambers, and the staggered port accelerating plate comprises a plurality of S segments connected in sequence and the two ends of the S segment are connected with the top edges of adjacent two discharging ports.
[0007] Preferably, an accelerating convex ridge consistent with the length direction of the staggered port flow dividing plate is arranged at the middle height position of the staggered port flow dividing plate.
[0008] Preferably, a blowing air channel is arranged at the center of the accelerating convex ridge, one end of the blowing air channel is provided with a gas source, and a plurality of blowing holes spaced apart along the length direction of the accelerating convex ridge and communicated with the blowing air channel are arranged on the lower surface of the accelerating convex ridge.
[0009] Preferably, a pulse air outlet adjusting device is arranged in the blowing air channel, the pulse air outlet adjusting device comprises a double helical steel wire, a bounce plate is arranged on the double helical steel wire, and a throttling cone movably matched with the blowing hole is arranged at the bottom of the bounce plate.
[0010] Preferably, the bounce plate comprises an elliptical plate body, two threading holes matched with the double helical steel wire are arranged on the plate body, a wire inlet communicated with the plate body is arranged at the bottom of the plate body, plug-in grooves are arranged on the two sides of the plate body, a clamping hole is arranged in the plug-in groove, the throttling cone comprises a plug-in port, key protrusions matched with the plug-in groove are arranged on the two side walls of the plug-in port, ball protrusions matched with the clamping hole are arranged on the key protrusions.
[0011] Preferably, an internal hexagonal blind hole is arranged at the bottom of the throttling cone.
[0012] Preferably, the bottom of the box cover is provided with a plurality of advancing balance flow devices corresponding to the discharge hoppers, the advancing balance flow device comprises a top plate, one side of the top plate is provided with a flow guide slope, and the flow guide slope is provided with a balance port penetrating front and back.
[0013] Preferably, the top plate is provided with a reflow cone opposite to the discharge hopper, the reflow cone is provided with an annular groove, the annular groove is provided with a self-rotation plate in the shape of Ω, the self-rotation plate is provided with an adjusting rope, and the balance port is rotatably provided with an inner air door plate connected with the adjusting rope.
[0014] Preferably, the discharge pipe is provided with a blockage cleaning device.
[0015] Compared with the prior art, the application has the advantages and positive effects that: The calcined coke discharge dust collection waste gas recycling system provided by the application reserves effective emptying conditions for fly ash, reduces the probability of blocky calcined coke carrying fly ash to leave, is beneficial to improving the dust collection efficiency of the pulse type bag dust collector on the discharge side of the tank type calcining furnace, avoids secondary dust, and sends the collected waste gas into the hot air inlets at the bottom of the eight layers of the tank type calcining furnace. The waste gas is preheated by the air vertical channel and enters the first layer of the fire channel to participate in the combustion of volatile components. On one hand, the waste gas can play a role in combustion. On the other hand, the products after combustion of the waste gas are mostly water and carbon dioxide. The flue gas can complete waste heat recovery in the process section of the waste heat boiler, and finally, denitration is performed until the standard emission is reached, and no polluting gas is discharged. The application has the advantages of reasonable design, good dust collection effect, avoidance of secondary dust, recycling ability, meeting of environmental protection production requirements, and suitability for large-scale promotion. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative labor.
[0017] Figure 1 FIG. 1 is a structural schematic diagram of the calcined coke discharge dust collection waste gas recycling system; Figure 2 FIG. 2 is a perspective view of the discharge pipe, the dust collection conveying pipeline and the blockage cleaning device; Figure 3 FIG. 3 is a top view of the discharge pipe, the dust collection conveying pipeline and the blockage cleaning device; Figure 4 FIG. 4 is a perspective view of the discharge port, the staggered port flow distribution plate, the discharge hopper and the box; Figure 5Side view of discharge port, staggered port flow distribution plate, discharge hopper and box; Figure 6 Plan view of distribution of discharge port, staggered port flow distribution plate in box; Figure 7 Plan view of distribution of balance flow device, staggered port flow distribution plate in box; Figure 8 Schematic view of pulse air regulating device; Figure 9 Working diagram of pulse air regulating device; Figure 10 Exploded view of bounce plate and throttle cone; Figure 11 Side view of discharge pipe, unblocking device, dust collection conveying pipe and balance flow device; Figure 12 Figure 11 Sectional view in H-H direction; Figure 13 Figure 12 Enlarged schematic view at A in the middle; Figure 14 Side view of balance flow device; Figure 15 Bottom view of balance flow device; Figure 16 Perspective view of balance flow device; In the above figures: 1, tank calcinator; 11, calcinator tank; 12, hot air inlet; 13, multi-layer flue; 14, flue; 15, discharge pipe; 16, vertical flue; 2, pulse bag dust collector; 3, dust collection conveying pipe; 31, box; 311, discharge port; 312, concave arc surface; 32, box cover; 33, discharge hopper; 34, staggered port flow distribution plate; 341, S section; 342, acceleration convex ridge; 343, injection air passage; 35, pulse air regulating device; 351, double helix steel wire; 352, bounce plate; 3521, plate body; 3522, threading hole; 3523, wire inlet; 3524, plug-in slot; 3525, clamping hole; 353, throttle cone; 3531, plug-in port; 3532, key convex; 3533, ball convex; 3534, internal hexagonal blind hole; 4, waste heat boiler; 5, air source; 6, forward balance flow device; 61, top plate; 62, flow guide slope; 63, balance port; 64, reflow cone; 65, self-rotation plate; 66, adjusting rope; 67, internal air door plate; 7, unblocking device; 8, waste discharge pipe; 9, desulfurization and denitrification equipment. DETAILED DESCRIPTION
[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.
[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Examples, such as Figures 1-16 As shown, the post-calcination coke discharge dust collection waste gas reuse system provided by the present invention includes a tank-type calcining furnace 1 and a pulse-jet baghouse dust collector 2. The tank-type calcining furnace 1 includes a calcining tank 11, a hot air inlet 12, a multi-layer fire channel 13, and a flue 14. A discharge pipe 15 is provided on the discharge side of the tank-type calcining furnace 1. The tank-type calcining furnace 1 adopts an eight-layer fire channel. The tank-type calcining furnace 1 and the pulse-jet baghouse dust collector 2 are existing mature technologies, and will not be described in detail here. Based on this, the present invention proposes improvements to the intermediate structure between the pulse-jet baghouse dust collector 2 and the discharge pipe 15, and proposes a reasonable utilization method for the waste gas after dust collection.
[0021] Specifically, the present application provides a discharge side of the discharge pipe 15 is provided with a dust collection conveying pipe 3 connected with the pulse bag dust collector 2, the dust collection conveying pipe 3 includes a plate box 31 and a box cover 32, the bottom of the plate box 31 is provided with a plurality of interval distributed discharge ports 311, the discharge ports 311 are provided with discharge hoppers 33, the side of the discharge hoppers 33 is communicated with the discharge pipe 15, the waste discharge side of the pulse bag dust collector 2 is provided with a waste discharge pipe 8, the waste discharge pipe 8 is connected with the hot air inlet 12, the inside of the tank calciner 1 is provided with a vertical channel 16, the vertical channel 16 is communicated with the bottom layer of the multi-layer fire channel 13, the output side of the flue 14 is provided with a waste heat boiler 4. Wherein, the number of calcining tanks 11 is designed according to the actual situation, and the tank calciner 1 with eight layers of fire channels is mostly provided with 40 calcining tanks 11; one dust collection conveying pipe 3 is connected with all the discharge pipes 15 on the same side of the tank calciner 1 at the same time, the discharge pipes 15 are corresponded with the corresponding discharge hoppers 33; the tail end of the discharge hopper 33 is used for connecting a vibrating discharge chute or directly connecting a ton bag of calcined coke or an engineering vehicle; the dust collection conveying pipe 3 is used for connecting the discharge pipe 15 and the conveyor / calcined coke collection terminal, the plate box 31 leaves a certain distance above the interface of the discharge pipe 15 and the discharge hopper 33; the longitudinal depth of the discharge hopper 33 is 140-300 cm, the volume of air in the discharge hopper 33 is actually reduced during the descending process of the calcined coke in the discharge hopper 33, the air is extruded to rise, so that the upward backflow air force can be generated, therefore, the plate box 31 and the discharge hopper 33 can reserve effective empty conditions such as empty time and suspension height for flying dust, the probability of carrying dust ash away by the rapidly falling blocky calcined coke is reduced, the dust collection efficiency of the pulse bag dust collector 2 on the discharge side of the tank calciner 1 is improved, and secondary dust is avoided; the dust after being collected by the pulse bag dust collector 2 enters a dust hopper, the filtered waste gas is sent into the hot air inlet 12 at the bottom of the eight layers of fire channels of the tank calciner 1 through the waste discharge pipe 8, the waste gas is preheated through the air vertical channel 16 and enters the first layer of fire channel to participate in the combustion of volatile components, on the one hand, the waste gas can play a role of combustion-supporting, and the available energy of the waste gas is fully utilized, on the other hand, most of the products after the combustion of the waste gas are water and carbon dioxide, and a small amount of sulfur oxides can be treated in the desulfurization and denitrification process section; the waste gas of the flue 14 can complete waste heat recovery in the process section of the waste heat boiler 4, and finally, the desulfurization and denitrification equipment 9 is used for desulfurization and denitrification treatment until reaching the emission standard, and no pollution gas is discharged. The present application has the advantages of reasonable design, good dust collection effect, being beneficial to avoiding secondary dust, having recycling ability and being beneficial to meeting the environmental protection production requirements.
[0022] In order to improve the dust collection efficiency of the present application on the discharge side of the tank calcinator 1, the bottom surface of the plate box 31 is a concave arc surface 312, and the concave arc surface 312 is provided with a staggered opening flow dividing plate 34 extending in a wave shape along the length direction of the plate box 31. The staggered opening flow dividing plate 34 divides the inside of the plate box 31 into two chambers on the left and right, and the adjacent discharge openings 311 are located in different chambers. The staggered opening accelerating plate includes a plurality of S segments 341 connected in sequence, and the two ends of the S segment 341 are connected to the top edges of the two adjacent discharge openings 311. The tank calcinator 1 has a large number of discharge pipes 15, and the discharge openings 311 / discharge hoppers 33 are in one-to-one correspondence with the discharge pipes 15, so the number of discharge openings 311 is also relatively large. In addition, the plate box 31 needs to ensure sufficient length and width to cover all the discharge hoppers 33, so the present application uses the staggered opening flow dividing plate 34 to ensure that the pressure loss is reduced, and the flow is divided, and a certain accelerating effect is provided, thereby improving the dust collection efficiency of the pulse type bag dust collector 2.
[0023] Further, the staggered opening flow dividing plate 34 staggered the adjacent discharge openings 311, the dust collection end point was consistent, and the adjacent discharge hoppers 33 were located on different flow paths. In this way, the fly ash / dust suspended above the discharge hoppers 33 did not collide with the small particles suspended above the adjacent discharge hoppers 33 in the advancing trend, and especially during the process of descending calcined coke from the discharge hoppers 33, backwash wind power was generated, which avoided the wind power from pushing the fly ash of the adjacent discharge hoppers 33 backward. For the dust collection on the same flow dividing path, the S-shaped segment of the staggered opening flow dividing plate 34 provided a guide surface for the fly ash at the position of the discharge opening 311, and a narrow area appeared at the position where the S-shaped segment was connected to the next S-shaped segment. Especially in the case where the pressure of the dust collection fan was large, the effect of the air port in the narrow area was stronger, and the concave arc surface 312 gradually increased in height in the advancing direction of the S-shaped segment, further reducing the actual cross section of the narrow area, thereby effectively accelerating the fly ash into the next S-shaped segment, and accelerating and advancing the fly ash above the discharge opening 311 on the path, thereby improving the dust collection efficiency of the pulse type bag dust collector 2.
[0024] In order to improve the accelerating effect of the staggered opening flow dividing plate 34 on the fly ash / fly dust, the middle height position of the staggered opening flow dividing plate 34 is provided with an accelerating ridge 342 consistent with the length direction thereof. The upper half of the accelerating ridge 342 is a convex curved surface, and the lower half is a flat curved surface, forming two wind speed bands with pressure difference. The greater the wind speed of the dust collection fan, the greater the pressure difference, which can accelerate the fly ash into the dust collection bag and lift the fly ash at the position of the discharge opening 311, thereby causing the fly ash near the interface level of the discharge opening 311 and the discharge hopper 33 to quickly rise into the dust collection path, effectively improving the dust collection efficiency of the present equipment on the discharge side of the tank calcinator 1.
[0025] In order to facilitate the cleaning of dust located near the concave arc surface 312, the center of the acceleration convex ridge 342 is provided with a blowing air channel 343, one end of the blowing air channel 343 is provided with a gas source 5, the acceleration convex ridge 342 is provided with a plurality of blowing holes on the lower surface thereof, the blowing holes are distributed along the length direction of the acceleration convex ridge 342 and are in communication with the blowing air channel 343, and the blowing holes are directed to the arc bottom position of the concave arc surface 312. The gas source 5 is connected to the blowing air channel 343 through a pipeline, the gas source 5 supplies pressure to the blowing air channel 343 to blow off the accumulated dust, and the accumulated dust enters the dust collecting bag under the action of the dust collecting fan of the pulse type bag dust collector 2. In this way, the application utilizes the acceleration convex ridge 342 to play the role of accelerating and lifting the fly ash, and also provides a relatively continuous air path, one function for many purposes, and provides reasonable implementation conditions for periodic cleaning of the plate box 31.
[0026] In order to improve the cleaning performance of dust in the plate box 31, the gas source 5 provided by the application adopts a gas source with constant pressure, and the position of the blowing hole adopts a design with pulse adjustment function. Specifically, the inside of the blowing air channel 343 is provided with a pulse air outlet adjusting device 35, the pulse air outlet adjusting device 35 includes a double helical steel wire 351, the double helical steel wire 351 is provided with a bouncing plate 352, the bottom of the bouncing plate 352 is provided with a throttling cone 353 which is in active cooperation with the blowing hole, the large bottom surface of the throttling cone 353 faces upward and the small bottom surface faces downward, the large bottom surface of the throttling cone 353 is slightly smaller than the blowing hole, and when the throttling cone 353 is completely pressed down to the position of the blowing hole, it can basically cover the blowing hole; the throttling cone 353 keeps a small gap with the blowing hole when the double helical steel wire 351 is static, which can reduce the fly ash entering the blowing air channel 343 from the blowing hole. Wherein, the two ends of the double helical steel wire 351 are spot-welded on the inner wall of the acceleration convex ridge 342, the two helical steel wires constituting the double helical steel wire 351 have a certain pitch interval, and under the action of the pressure in the blowing air channel 343, the two helical steel wires can relatively move and twist, in the limited space, the bouncing plate 352 can float under the action of the double helical steel wire 351, thereby driving the throttling cone 353 to dynamically adjust the flow of the blowing hole, so as to change the blowing flow and blowing force acting on the concave arc surface 312 in real time, obtain the pulse effect of non-fixed frequency, and further improve the cleaning performance of the accumulated dust on the concave arc surface 312.
[0027] In order to facilitate the assembly of the pulse air regulating device 35, the present application provides that the bounce plate 352 comprises an elliptical plate body 3521, two wire holes 3522 on the plate body 3521 are matched with the double helix steel wire 351, the bottom of the plate body 3521 is provided with a wire inlet 3523 communicated with the plate body 3521, both sides of the plate body 3521 are provided with an insertion slot 3524, the insertion slot 3524 is provided with a clamping hole 3525, the throttle cone 353 comprises an insertion port 3531, both side walls of the insertion port 3531 are provided with a key protrusion 3532 matched with the insertion slot 3524, and the key protrusion 3532 is provided with a ball protrusion 3533 matched with the clamping hole 3525. Wherein, the major axis and the minor axis of the plate body 3521 are both smaller than the diameter of the blowing hole, and the maximum length of the combination of the plate body 3521 and the throttle cone 353 is greater than the diameter of the blowing hole, so that the plate body 3521 and the throttle cone 353 can always be kept in the corresponding node position of the blowing hole in the combined state. The plate body 3521 can be pre-assembled with the double helix steel wire 351, two steel wires are clamped into the wire holes 3522 from the wire inlet 3523, the plate body 3521 is prevented from being separated from the designed position by the supporting force of the double helix steel wire 351, the double helix steel wire 351 is penetrated into the blowing hole together with the plate body 3521 until the two ends of the double helix steel wire 351 reach the corresponding position, and the end of the double helix steel wire is spot welded; the throttle cone 353 is inserted into the blowing hole and matched with the corresponding plate body 3521, until the ball protrusion 3533 is clamped in the corresponding clamping hole 3525, the plate body 3521 and the throttle cone 353 are reliably connected under the cooperation of the insertion slot 3524, the key protrusion 3532, the clamping hole 3525 and the ball protrusion 3533, and the wire inlet 3523 is automatically locked by the top surface of the throttle cone, so that the steel wire and the plate body 3521 cannot be tripped, thereby realizing the assembly of the pulse air regulating device 35. The plate body 3521 and the throttle cone 353 can be disassembled by inserting a rod-shaped tool into the gap between the insertion slot 3524 and the plate body 3521 and applying a lever force, which is simple in structure and high in practicability.
[0028] Further, the bottom of the throttle cone 353 is provided with an internal hexagonal blind hole 3534, a hexagonal wrench is inserted into the internal hexagonal blind hole 3534, so that the throttle cone 353 can be inserted into the blowing hole and matched with the plate body 3521.
[0029] In order to improve the dust collection performance of the equipment, the bottom of the box cover 32 is provided with a plurality of forward balance flow devices 6 corresponding to the discharge hopper 33, the forward balance flow device 6 comprises a top plate 61, one side of the top plate 61 is provided with a flow guide slope 62, and the flow guide slope 62 is provided with a front and rear through balance port 63. The backflow wind power generated in the process of descending the calcined coke from the discharge hopper 33 can act on the flow guide slope 62, and the flow guide slope 62 is used to combine the wind power with the wind power of the air collector and act on the fly ash in the forward direction; at the same time, the balance port 63 can balance according to the wind power of the front and rear positions, so as to improve the continuity of the forward movement of the fly ash / dust, thereby improving the dust collection performance of the equipment.
[0030] Further, the top plate 61 is provided with a reflow cone 64 opposite to the discharge hopper 33, the reflow cone 64 is provided with an annular groove, the annular groove is provided with a self-rotating plate 65 in the shape of Ω, the self-rotating plate 65 is provided with an adjusting rope 66, and the balance port 63 is rotatably provided with an inner air door plate 67 connected with the adjusting rope 66. Wherein, the reflow cone 64 can be acted on by multiple wind powers, especially the backflow wind power from bottom to top in the discharge hopper 33, so as to break the wind, disperse the impact force, switch the direction of the wind power and make it flow forward better; the surface of the self-rotating plate 65 is kept horizontal, the inner ring is a circular ring and keeps a smooth cooperation with the annular groove, so as to facilitate automatic rotation; the end of the self-rotating plate 65 is provided with a fan plate, and multiple wind powers acting on the fan plate can drive the self-rotating plate 65 to rotate automatically around the center of the reflow cone 64, the self-rotating plate 65 pulls the adjusting rope 66 to produce deflection, so as to drive the inner air door plate 67 to adjust the actual outlet size of the balance port 63, so that the multiple wind powers can realize automatic balance in the forward direction at this position, which is beneficial to improve the dust collection performance of the equipment.
[0031] In order to improve the discharge performance, the discharge pipe 15 is provided with a blockage cleaning device 7, the blockage cleaning device 7 adopts an external motor, the wire of the external motor is arranged in a cable box, and the cable box can also arrange the cable line of the temperature measuring element; the external motor drives the screw mechanism in the pipeline to clean the blockage, so as to ensure the discharge performance of the tank type calcining furnace 1.
[0032] The above is only a preferred embodiment of the present application, and is not intended to limit the other forms of the present application. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.
Claims
1. A system for reusing exhaust gas from calcined coke discharge dust collection, comprising a pot-type calcining furnace and a pulse-jet baghouse dust collector, wherein the pot-type calcining furnace includes a calcining pot, a hot air inlet, multiple layers of flue gas ducts, and a discharge pipe is provided on the discharge side of the pot-type calcining furnace, characterized in that, The discharge side of the discharge pipe is provided with a dust collection conveying pipe connected to the pulse-jet baghouse dust collector. The dust collection conveying pipe includes a plate box and a box cover. The bottom of the plate box is provided with multiple spaced discharge ports. A discharge hopper is provided at each discharge port. The side of the discharge hopper is connected to the discharge pipe. The waste discharge side of the pulse-jet baghouse dust collector is provided with a waste discharge pipe, which is connected to a hot air inlet. The interior of the tank-type calcining furnace is provided with a vertical channel, which is connected to the bottom layer of the multi-layer fire channel. A waste heat boiler is provided on the output side of the flue.
2. The calcined coke discharge dust collection and waste gas reuse system according to claim 1, characterized in that, The bottom surface of the plate box is a concave arc surface, and a staggered flow divider plate extending in a wave shape along the length direction of the plate box is provided on the concave arc surface. The staggered flow divider plate divides the interior of the plate box into two chambers, left and right, and the adjacent discharge ports are located in different chambers. The staggered flow divider plate includes multiple S-segments connected end to end, and the two ends of the S-segments are connected to the top edges of two adjacent discharge ports.
3. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 2, characterized in that, The staggered flow divider plate has an acceleration ridge at its middle height position that is aligned with its length direction.
4. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 3, characterized in that, The acceleration ridge has a jetting air channel at its center, and an air source is provided at one end of the jetting air channel. The acceleration ridge has a plurality of jetting holes that are spaced apart along its length and communicate with the jetting air channel on its lower surface.
5. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 4, characterized in that, The inside of the jet air passage is equipped with a pulse air outlet regulating device, which includes a double helical steel wire, a spring plate on the double helical steel wire, and a throttling cone at the bottom of the spring plate that is movable and cooperates with the jet hole.
6. The calcined coke discharge dust collection and waste gas reuse system according to claim 5, characterized in that, The bouncy board includes an elliptical board body with two threading holes for cooperating with double helical steel wires. The bottom of the board body has a wire inlet communicating with it. Both sides of the board body have insertion slots with locking holes. The throttling cone includes an insertion interface. The two side walls of the insertion interface have key protrusions that mate with the insertion slots, and the key protrusions have ball protrusions that mate with the locking holes.
7. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 6, characterized in that, The bottom of the throttling cone is provided with an internal hexagonal blind hole.
8. The system for reusing calcined coke discharge dust collection waste gas according to claim 1 or 7, characterized in that, The bottom of the box cover is provided with multiple forward balancing flow devices corresponding to the discharge hoppers. Each forward balancing flow device includes a top plate, a guide slope on one side of the top plate, and a balancing port that runs through the front and back on the guide slope.
9. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 8, characterized in that, The top plate is provided with a heavy flow cone facing the discharge hopper. The heavy flow cone is provided with an annular groove. An Ω-shaped rotating plate is provided in the annular groove. An adjusting rope is provided on the rotating plate. An inner damper plate connected to the adjusting rope is rotatably provided at the balance port.
10. The post-calcination coke discharge dust collection and waste gas reuse system according to claim 1, characterized in that, The discharge pipe is equipped with a blockage clearing device.