Tamping coke oven ascension pipe waste heat utilization device

Abstract

The utility model relates to a waste heat utilization device for a tamping coke oven ascension pipe, which comprises a front ascension pipe fixedly communicated with a gas outlet of a tamping coke oven, a rear ascension pipe fixedly communicated with a raw gas delivery pipe and a heat exchange ascension pipe detachably communicated between the front ascension pipe and the rear ascension pipe. The heat conduction pipe body is fixedly sleeved with a heat preservation jacket, the lower portion of one side of the heat preservation jacket is fixedly communicated with a first medium input pipe, the upper portion of the other side of the heat preservation jacket is fixedly communicated with a first medium output pipe, a medium input annular pipe is arranged in the lower portion of the heat conduction pipe body, and a medium output annular pipe is arranged in the upper portion of the heat conduction pipe body. The medium input ring pipe is fixedly communicated with a second medium input pipe extending out of the heat preservation jacket, the medium output ring pipe is fixedly communicated with a second medium output pipe extending out of the heat preservation jacket, and a plurality of heat exchange tube nests are communicated between the medium input ring pipe and the medium output ring pipe. The waste heat recycling device can effectively recycle the waste heat of the raw gas flowing through the ascending pipe and is convenient to disassemble, assemble and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat utilization, and particularly relates to a waste heat utilization device for a rising pipe of a stamping coke oven. Background Art

[0002] At present, during the coking process of a stamping coke oven, the temperature of the raw coke oven gas in the rising pipe of the coke oven is as high as 750 °C, containing a large amount of sensible heat. To reduce the temperature of the raw coke oven gas for subsequent coking process treatment, the traditional process uses the process of spraying ammonia water for rapid cooling to cool the high-temperature raw coke oven gas. The circulating ammonia water is sprayed through the bridge pipe and the collecting pipe to directly contact the raw coke oven gas. By a large amount of gasification of the circulating ammonia water, the raw coke oven gas is rapidly cooled to below 80 °C. After cooling, the raw coke oven gas is indirectly cooled to room temperature by cooling water in the primary cooler. This process flow not only wastes a large amount of sensible heat of the raw coke oven gas, but also consumes a large amount of ammonia water, resulting in huge resource waste and needs to be improved. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a waste heat utilization device for a rising pipe of a stamping coke oven, which can effectively recover and utilize the waste heat of the raw coke oven gas flowing through the rising pipe and is convenient for disassembly and assembly and use, so as to solve the above problems.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: A waste heat utilization device for the riser pipe of a stamping coke oven, which includes a front riser pipe fixedly connected to the gas outlet of the stamping coke oven, a rear riser pipe fixedly connected to the raw gas conveying pipe, and a heat exchange riser pipe detachably connected between the front riser pipe and the rear riser pipe. Control valves are provided on the lower part of the front riser pipe and the upper part of the rear riser pipe. Annular movable grooves are provided at the top end of the front riser pipe and the bottom end of the rear riser pipe. A number of electric push rods are fixedly provided on the bottom of the movable groove. The telescopic ends of the electric push rods in the same movable groove all face the direction of the corresponding notch and are fixedly connected to the same ring plate. The heat exchange riser pipe includes a heat conduction pipe body. Annular slots are provided at both the top and bottom ends of the heat conduction pipe body. The bottom end of the heat conduction pipe body abuts against the top end of the front riser pipe, and the top end abuts against the bottom end of the rear riser pipe. And the ring plate is inserted into the slot on the same side. A heat preservation jacket is fixedly sleeved on the outer side of the heat conduction pipe body. A gap is formed between the inner side wall of the heat preservation jacket and the outer side wall of the heat conduction pipe body to form a heat exchange medium channel. A first medium input pipe is fixedly connected to the lower part of one side of the heat preservation jacket, and a first medium output pipe is fixedly connected to the upper part of the other side. A medium input ring pipe is provided inside the lower part of the heat conduction pipe body, and a medium output ring pipe is provided inside the upper part. The medium input ring pipe is fixedly connected to a second medium input pipe extending out of the heat preservation jacket. The medium output ring pipe is fixedly connected to a second medium output pipe extending out of the heat preservation jacket. Quick connectors are provided at the ports of the first medium input pipe, the first medium output pipe, the second medium input pipe, and the second medium output pipe. A number of heat exchange tubes are fixedly connected between the medium input ring pipe and the medium output ring pipe.

[0005] Preferably, the ring plate is adapted to the corresponding slot.

[0006] Preferably, the heat conduction pipe body is made of graphene material.

[0007] Preferably, the heat preservation jacket is made of nano heat preservation material.

[0008] Preferably, the outer surface of the heat preservation jacket is provided with a foam aluminum coating.

[0009] Preferably, the medium input ring pipe, the medium output ring pipe, and the heat exchange tubes are all made of seamless heat-resistant alloy steel.

[0010] The beneficial effects of the present utility model are as follows: During use, the high-temperature raw coke oven gas generated by the stamping coke oven can enter the heat exchange riser through the front riser, flow upward through the heat exchange riser from bottom to top, then enter the rear riser, and enter the raw coke oven gas conveying pipe through the rear riser, and be conveyed to subsequent processes. When the raw coke oven gas flows through the heat exchange riser, a heat exchange medium can be circulated in the heat preservation jacket through the cooperation of the first medium input pipe, the heat exchange medium channel and the first medium output pipe to absorb the heat of the raw coke oven gas from the outside of the heat conduction pipe body. And through the cooperation of the second medium input pipe, the medium input ring pipe, multiple heat exchange tubes, the medium output ring pipe and the second medium output pipe, a heat exchange medium can be circulated in the heat exchange tubes to absorb the heat of the raw coke oven gas from the inside of the heat conduction pipe body. In this way, the heat of the raw coke oven gas flowing through the heat conduction pipe body can be simultaneously exchanged and absorbed inside and outside, greatly improving the heat exchange efficiency and quality, achieving a better heat exchange effect, more effectively recovering and utilizing the waste heat of the riser, reducing the subsequent ammonia water consumption, avoiding waste of resources, and the two heat exchange mediums can be the same or different, and can be used to heat the two mediums simultaneously according to the need to utilize the waste heat, which is more practical;

[0011] When the heat exchange riser has problems, it can be flexibly disassembled, replaced and installed. Specifically: the control valves on the front riser and the rear riser can be closed in the shutdown state, and then the connections between the medium input and output pipes and the corresponding pipelines can be disconnected through the respective quick connectors. Then, the electric push rod is operated to make its telescopic end contract, which can drive the corresponding ring plate to retract into the corresponding movable groove, releasing the plug-in fixation of the heat conduction pipe body, so that the original heat exchange riser can be conveniently disassembled from between the front riser and the rear riser. Next, after taking a new heat exchange riser, first place it in place between the front riser and the rear riser, and then operate the electric push rod to make its telescopic end extend, driving the corresponding ring plate to move towards the corresponding slot until the ring plate is plugged in place in the corresponding slot, fixing the heat conduction pipe body by plugging, that is, completing the fixed installation of the heat exchange riser, and the installation is firm without affecting subsequent use. After that, connect the medium input and output pipes to the corresponding pipelines through the quick connectors, and then it can be used continuously. In this way, the convenient disassembly, replacement and use of the heat exchange riser can be realized, making the use of the whole device more flexible and convenient. Brief Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the present utility model;

[0013] Figure 2 is the front view structural schematic diagram of the front riser of the present utility model;

[0014] Figure 3 is the front view structural schematic diagram of the rear riser of the present utility model;

[0015] Figure 4 is the front view structural schematic diagram of the heat exchange riser of the present utility model;

[0016] Figure 5 It is a top - view structural schematic diagram of the heat - exchange riser tube of the present utility model;

[0017] Figure 6 It is a front - view structural schematic diagram when the heat - exchange riser tube of the present utility model is connected to the front riser tube and the rear riser tube.

[0018] Reference numerals in the figure: 1 is a stamping coke oven, 2 is a front riser tube, 3 is a raw gas transmission pipe, 4 is a rear riser tube, 5 is a heat - exchange riser tube, 6 is a control valve, 7 is a movable groove, 8 is an electric push rod, 9 is an annular plate, 10 is a heat - conducting tube body, 11 is a slot, 12 is a heat - preservation jacket, 13 is a heat - exchange medium channel, 14 is a first medium input pipe, 15 is a first medium output pipe, 16 is a medium input annular pipe, 17 is a medium output annular pipe, 18 is a second medium input pipe, 19 is a second medium output pipe, 20 is a quick - coupling, 21 is a heat - exchange tube bank, 22 is an aluminum foam coating. Specific embodiments

[0019] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0020] As Figures 1 to 6As shown in the figure, a waste heat utilization device for the riser pipe of a stamping coke oven includes a front riser pipe 2 fixedly communicated with the gas outlet of the stamping coke oven 1, a rear riser pipe 4 fixedly communicated with the raw gas conveying pipe 3, and a heat exchange riser pipe 5 detachably communicated between the front riser pipe 2 and the rear riser pipe 4. Control valves 6 are provided on the lower part of the front riser pipe 2 and the upper part of the rear riser pipe 4. Annular movable grooves 7 are opened at the top end of the front riser pipe 2 and the bottom end of the rear riser pipe 4. A plurality of electric push rods 8 are fixedly provided on the bottom of the movable groove 7. The telescopic ends of the electric push rods 8 in the same movable groove 7 all face the direction of the corresponding notch and are fixedly connected to the same ring plate 9. The heat exchange riser pipe 5 includes a heat conduction pipe body 10. Annular insertion slots 11 are opened at both the top and bottom ends of the heat conduction pipe body 10. The bottom end of the heat conduction pipe body 10 abuts against the top end of the front riser pipe 2, and the top end abuts against the bottom end of the rear riser pipe 4. And the ring plate 9 is inserted into the insertion slot 11 on the same side. A heat preservation jacket 12 is fixedly sleeved on the outer side of the heat conduction pipe body 10. A gap is formed between the inner side wall of the heat preservation jacket 12 and the outer side wall of the heat conduction pipe body 10 to form a heat exchange medium channel 13. A first medium input pipe 14 is fixedly communicated with the lower part of one side of the heat preservation jacket 12, and a first medium output pipe 15 is fixedly communicated with the upper part of the other side. A medium input ring pipe 16 is arranged inside the lower part of the heat conduction pipe body 10, and a medium output ring pipe 17 is arranged inside the upper part. The medium input ring pipe 16 is fixedly communicated with a second medium input pipe 18 extending out of the heat preservation jacket 12, and the medium output ring pipe 17 is fixedly communicated with a second medium output pipe 19 extending out of the heat preservation jacket 12. Quick connectors 20 are provided at the ports of the first medium input pipe 14, the first medium output pipe 15, the second medium input pipe 18 and the second medium output pipe 19. A plurality of heat exchange tubes 21 are fixedly communicated between the medium input ring pipe 16 and the medium output ring pipe 17;

[0021] During use, the high-temperature raw gas generated by the stamping coke oven 1 can enter the heat exchange riser pipe 5 through the front riser pipe 2, flow through the heat exchange riser pipe 5 from bottom to top, then enter the rear riser pipe 4, and enter the raw gas conveying pipe 3 through the rear riser pipe 4 and be transported to the subsequent process. When the raw gas flows through the heat exchange riser pipe 5, a heat exchange medium can be circulated in the heat preservation jacket 12 through the cooperation of the first medium input pipe 14, the heat exchange medium channel 13 and the first medium output pipe 15 to absorb the heat of the raw gas from the outside of the heat conduction pipe body 10. A heat exchange medium can be circulated in the heat exchange tubes 21 through the cooperation of the second medium input pipe 18, the medium input ring pipe 16, a plurality of heat exchange tubes 21, the medium output ring pipe 17 and the second medium output pipe 19 to absorb the heat of the raw gas from the inside of the heat conduction pipe body 10. In this way, the heat of the raw gas flowing through the heat conduction pipe body 10 can be simultaneously heat-exchanged and absorbed inside and outside, the heat exchange efficiency and quality are greatly improved, the heat exchange effect is better, the waste heat of the riser pipe 5 can be more effectively recovered and utilized, the subsequent ammonia water consumption is reduced, resource waste is avoided, and the two heat exchange mediums can be the same or different, and two mediums can be heated simultaneously using waste heat according to needs, which is more practical;

[0022] When the heat exchange riser tube 5 has problems, it can be flexibly disassembled, replaced, and the specific steps are as follows: The control valves 6 on the front riser tube 2 and the rear riser tube 4 can be closed in the shutdown state, and then the connection between each medium input and output pipe and the corresponding pipeline can be disconnected through each quick connector 20. Then, the electric push rod 8 is operated to make its telescopic end contract, which can drive the corresponding ring plate 9 to retract into the corresponding movable groove 7, releasing the plug-in fixation of the heat conduction tube body 10, so that the original heat exchange riser tube 5 can be conveniently disassembled from between the front riser tube 2 and the rear riser tube 4. Next, after taking a new heat exchange riser tube 5, first place it in place between the front riser tube 2 and the rear riser tube 4, and then operate the electric push rod 8 to make its telescopic end extend, driving the corresponding ring plate 9 to move towards the corresponding slot 11 until the ring plate 9 is plugged in place in the corresponding slot 11, fixing the heat conduction tube body 10 by plugging, that is, completing the fixed installation of the heat exchange riser tube 5, and the installation is stable without affecting subsequent use. After that, connect each medium input and output pipe to the corresponding pipeline through the quick connector 20, and then it can be used continuously. In this way, the convenient disassembly, replacement, and use of the heat exchange riser tube 5 can be realized, making the use of the entire device more flexible and convenient. The quick connector 20 can adopt the existing technology. It generally consists of a male head and a female head. Only need to preset the male head or the female head on each medium input and output pipe, and then preset the corresponding female head or male head on the pipeline for transporting the corresponding medium, and then they can be used in cooperation.

[0023] In this embodiment, the ring plate 9 is adapted to the corresponding slot 11 to ensure that the ring plate 9 is smoothly plugged in place and cooperate to realize the plug-in fixation of the heat conduction tube body 10.

[0024] In this embodiment, the heat conduction tube body 10 is made of existing graphene material, which has good high temperature resistance, corrosion resistance, and heat conduction performance, and can better transfer the heat of the raw coal gas to the heat preservation jacket to cooperate with the waste heat recovery and utilization.

[0025] In this embodiment, the heat preservation jacket 12 is made of existing nano heat preservation material to better insulate and keep warm, ensuring the efficiency and quality of waste heat recovery and utilization.

[0026] In this embodiment, the outer surface of the heat preservation jacket 12 is provided with a foam aluminum coating 22. Foam aluminum is an existing material with good damping shock absorption, corrosion resistance, and heat insulation and heat preservation characteristics, which can further ensure the service life and heat insulation and heat preservation performance of the heat exchange riser tube 5, and is more conducive to the stable progress of waste heat recovery and utilization, ensuring the effect of waste heat recovery and utilization.

[0027] In this embodiment, the medium input loop pipe 16, the medium output loop pipe 17, and the heat exchange tube bank 21 are all made of seamless heat-resistant alloy steel. The pipes of this material are coated with an anti-corrosion layer and a heat-conducting layer, where the anti-corrosion layer is arranged on the inner layer and the heat-conducting layer is arranged on the outer layer, enabling the pipes to be high-temperature resistant and corrosion-resistant, being able to safely and reliably directly contact with raw coal gas for heat exchange, having high heat exchange efficiency, being convenient for construction, having a wide application range, and being more practical.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waste heat utilization device for the riser pipe of a stamping coke oven, characterized in that, It includes a front riser pipe fixedly connected to the gas outlet of the stamping coke oven, a rear riser pipe fixedly connected to the raw gas conveying pipe, and a heat exchange riser pipe detachably connected between the front riser pipe and the rear riser pipe. Control valves are provided on the lower part of the front riser pipe and the upper part of the rear riser pipe. Annular movable grooves are provided at the top end of the front riser pipe and the bottom end of the rear riser pipe. A number of electric push rods are fixedly provided on the bottom of the movable groove. The telescopic ends of the electric push rods in the same movable groove all face the direction of the corresponding notch and are fixedly connected to the same ring plate. The heat exchange riser pipe includes a heat-conducting pipe body. Annular slots are provided at both the top and bottom ends of the heat-conducting pipe body. The bottom end of the heat-conducting pipe body abuts against the top end of the front riser pipe, and the top end abuts against the bottom end of the rear riser pipe. And the ring plate is inserted into the slot on the same side. A heat-insulating jacket is fixedly sleeved on the outer side of the heat-conducting pipe body. A gap is formed between the inner side wall of the heat-insulating jacket and the outer side wall of the heat-conducting pipe body to form a heat exchange medium channel. A first medium input pipe is fixedly connected to the lower part of one side of the heat-insulating jacket, and a first medium output pipe is fixedly connected to the upper part of the other side. A medium input ring pipe is arranged inside the lower part of the heat-conducting pipe body, and a medium output ring pipe is arranged inside the upper part. The medium input ring pipe is fixedly connected to a second medium input pipe extending out of the heat-insulating jacket, and the medium output ring pipe is fixedly connected to a second medium output pipe extending out of the heat-insulating jacket. Quick connectors are provided at the ports of the first medium input pipe, the first medium output pipe, the second medium input pipe, and the second medium output pipe. A number of heat exchange tubes are fixedly connected between the medium input ring pipe and the medium output ring pipe.

2. The waste heat utilization device for the riser pipe of the stamping coke oven according to claim 1, wherein, The ring plate is adapted to the corresponding slot.

3. The waste heat utilization device for the riser pipe of the stamping coke oven according to claim 1, characterized in that, The heat-conducting pipe body is made of graphene material.

4. The waste heat utilization device for the riser of the stamping coke oven according to claim 1, characterized in that, The heat-insulating jacket is made of nano heat-insulating material.

5. The waste heat utilization device for the riser of the stamp coke oven according to claim 1, characterized in that, The outer surface of the heat-insulating jacket is provided with a foam aluminum coating.

6. The waste heat utilization device for the riser of the stamp coke oven according to claim 1, characterized in that, The medium input ring pipe, the medium output ring pipe, and the heat exchange tubes are all made of seamless heat-resistant alloy steel material.

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