CN220959752U - External heat exchange's tedge waste heat recovery device - Google Patents
External heat exchange's tedge waste heat recovery device Download PDFInfo
- Publication number
- CN220959752U CN220959752U CN202322730352.XU CN202322730352U CN220959752U CN 220959752 U CN220959752 U CN 220959752U CN 202322730352 U CN202322730352 U CN 202322730352U CN 220959752 U CN220959752 U CN 220959752U
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- heat
- heat exchange
- pipe
- tube
- steam
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- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000002918 waste heat Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 230000000630 rising effect Effects 0.000 claims description 31
- 238000012546 transfer Methods 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims 1
- 230000001174 ascending effect Effects 0.000 abstract description 21
- 239000000571 coke Substances 0.000 abstract description 15
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000013529 heat transfer fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the technical field of coke oven riser waste heat recovery devices, in particular to an external heat exchange riser waste heat recovery device. The technical proposal comprises: ascending tube shell comprising an external heat exchanger; the heat exchange pipe fitting comprises an upper header pipe, a lower header pipe, a condensate water downcomer and a steam riser, wherein the heat exchange pipe fitting is positioned in the riser shell; the water circulation device is provided with a circulating water outlet main pipe and a circulating water return main pipe. The heat conduction medium absorbs heat and releases heat in the shell of the ascending tube, circulating water is subjected to heat conversion between the outside of the ascending tube and the heat exchanger outside the tube, the risk of water leakage can be avoided due to indirect heat exchange of the heat tube, potential safety hazards are eliminated, once the heat tube leaks, the heat conduction medium in the tube can be instantly evaporated, any influence on the ascending tube and the coke oven can be avoided, only replacement and maintenance are needed, and meanwhile, if the heat exchanger outside the tube is damaged, the circulating water can not flow into the ascending tube.
Description
Technical Field
The utility model relates to the technical field of coke oven riser waste heat recovery devices, in particular to an external heat exchange riser waste heat recovery device.
Background
Three types of common coke oven riser waste heat recovery devices exist at the present stage: water jacket, outer coil, and plug-in. The water jacket type rising pipe heat exchanger is provided with a sleeve outside the rising pipe inner cylinder, working medium is moved between a interlayer formed between the rising pipe inner cylinder and the outer cylinder, the working medium absorbs heat of raw gas to complete heat exchange, heat recovery is realized, if a pressure-bearing member leaks, water can enter a coking chamber of a coke oven, and serious explosion accidents of the coke oven can be caused; the outer coil type rising pipe heat exchanger is a heat exchange pipe on an outer coil of an inner cylinder of the rising pipe heat exchanger, and the structure is as follows: the heat exchange tube wall, heat conduction mud and the rising tube inner barrel are also in a direct heat exchange type, and the damage of an outer coil or the dry burning of a system can possibly lead water to enter a carbonization chamber of a coke oven to cause hidden explosion trouble, and the rising tube resistance of the coil type is large, so that the power of a forced circulation pump is greatly increased, and the manufacturing cost is high; the inserted rising pipe structure is that the rising pipe heat exchanger is directly inserted into the original rising pipe, and the steam in the pipe and the raw gas outside the pipe directly exchange heat. The heat exchange structure also has the risk that the medium leaks into the carbonization chamber, and once the water of the medium in the insertion pipe leaks, the potential safety hazard of the coke oven can be caused.
Therefore, the utility model provides an external heat exchange rising pipe waste heat recovery device, which aims to solve the problem that the medium leakage into a carbonization chamber exists in the existing coke oven rising pipe waste heat recovery device.
Disclosure of utility model
The utility model aims to solve the problems in the background art and provides an external heat exchange riser waste heat recovery device.
The technical scheme of the utility model is as follows: the rising pipe waste heat recovery device for external heat exchange comprises a rising pipe shell and an external heat exchanger; the heat exchange pipe fitting is positioned in the ascending pipe shell and comprises an upper header, a lower header, a condensate water descending pipe and a steam ascending pipe; the water circulation device is provided with a circulating water outlet main pipe and a circulating water return main pipe.
Optionally, the bottom end of the steam rising pipe is fixedly connected and communicated with the lower collecting pipe, and the top end of the steam rising pipe is externally connected with a steam pipeline.
Optionally, the top end of the condensate water downcomer is fixedly connected and communicated with the upper header, and the bottom end of the condensate water downcomer is fixedly connected and communicated with the lower header.
Optionally, the upper header is provided with a condensate inlet, and the condensate inlet is communicated with a condensate water downcomer.
Optionally, the outer heat exchanger top of pipe is equipped with steam inlet, steam inlet communicates with the steam rising pipe through external pipeline, the outer heat exchanger bottom of pipe is equipped with the comdenstion water export, just the comdenstion water export is docked with the comdenstion water import.
Optionally, a heat exchange tube is arranged in the heat exchanger outside the tube, the top end of the heat exchange tube is communicated with the steam inlet, and the bottom end of the heat exchange tube is communicated with the condensed water outlet.
Optionally, the heat exchanger outside the pipe is provided with a circulating water inlet and a circulating water outlet, the circulating water inlet is communicated with a circulating water outlet main pipe of the water circulating equipment, and the circulating water outlet is communicated with a circulating water inlet main pipe of the water circulating equipment.
Compared with the prior art, the utility model has the following beneficial technical effects:
In the application, the heat conduction medium absorbs heat and releases heat in the shell of the ascending tube, the circulating water carries out heat conversion between the outside of the ascending tube and the heat exchanger outside the tube, because the heat pipe indirectly exchanges heat, the risk of water leakage can be avoided, the potential safety hazard is eliminated, once the heat pipe leaks, the heat conduction medium in the tube can be instantly evaporated, any influence on the ascending tube and the coke oven can be avoided, only the replacement and maintenance are needed, and meanwhile, if the heat exchanger outside the tube is damaged, the circulating water can not flow into the ascending tube.
In general, the device absorbs heat of the coke oven ascending pipe through a heat conduction medium, generates superheated steam and transmits the superheated steam to the heat exchanger outside the pipe, circulating water absorbs and takes away the heat of the heat exchanger outside the pipe and gathers the heat to a water return main pipe, so that safe recovery of the heat of the coke oven ascending pipe is realized, indirect heat transmission is realized, and circulating water does not enter the ascending pipe, thereby being safe and stable.
Drawings
FIG. 1 is a schematic diagram of a riser waste heat recovery device with external heat exchange;
FIG. 2 is a schematic view of a heat exchange tube in a first embodiment;
fig. 3 is a schematic structural diagram of a heat exchange tube in the second embodiment.
Reference numerals: 1. a water circulation device; 2. a steam inlet; 3. a heat exchange tube; 4. a circulating water inlet; 5. a circulating water outlet; 6. a condensed water outlet; 7. an external heat exchanger; 9. an upper header; 13. a lower header; 15. a riser housing; 16. a steam riser; 18. a condensate inlet; 19. condensing water down-comer; 21. a circulating water inlet valve; 22. and a circulating water outlet valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-2, the utility model provides an external heat exchange rising pipe waste heat recovery device, which comprises a rising pipe shell 15, an external heat exchanger 7 and water circulation equipment 1.
In this embodiment, the water circulation device 1 may adopt a steam drum to realize water circulation, and is provided with a circulating water outlet header pipe and a circulating water return header pipe, which are not described herein in detail because they are in the prior art.
In the embodiment, the top end of the external heat exchanger 7 is provided with a steam inlet 2, and the bottom end of the external heat exchanger 7 is provided with a condensed water outlet 6. The heat exchange tube 3 is arranged in the heat exchanger 7 outside the tube, the top end of the heat exchange tube 3 is communicated with the steam inlet 2, and the bottom end of the heat exchange tube 3 is communicated with the condensate water outlet 6. The external heat exchanger 7 is provided with a circulating water inlet 4 and a circulating water outlet 5, the circulating water inlet 4 is communicated with a circulating water outlet main pipe of the water circulating device 1 and is provided with a circulating water inlet valve 21, and the circulating water outlet 5 is communicated with a circulating water inlet main pipe of the water circulating device 1 and is provided with a circulating water outlet valve 22.
In this embodiment, the bottom of the riser housing 15 is provided with a base, and the top is connected with a water seal cover to realize sealing, and the base and the water seal cover are both existing structures of the riser, which are not described herein;
Inside the riser housing 15 are arranged heat exchange tubes comprising an upper header 9, a lower header 13, four condensate water downcomers 19 and a steam riser 16. The bottom end of the steam rising pipe 16 is fixedly connected and communicated with the lower header 13, and the top end of the steam rising pipe 16 is connected with the steam inlet 2 at the top end of the external heat exchanger 7 through an external steam pipeline; the top end of the condensate water downcomer 19 is fixedly connected and communicated with the upper header 9, and the bottom end of the condensate water downcomer 19 is fixedly connected and communicated with the lower header 13. The upper header 9 is provided with a condensate inlet 18, the condensate inlet 18 is communicated with the condensate outlet 6 at the bottom end of the external heat exchanger 7, and the condensate inlet 18 is communicated with a condensate water downcomer 19.
The working principle of the embodiment is as follows: the heat transfer medium (one or more of water, heat transfer fluid a, heat transfer fluid b, mercury, potassium, sodium) is injected by a high-pressure pump, flows in from the condensate inlet 18, dispersedly flows into the respective condensate downcomer 19 through the upper header 9, and then flows to the lower header 13. In this process, the high temperature raw gas in the rising pipe will vaporize the heat transfer medium in the lower header 13, and the steam rising pipe 16 connected to the lower header 13 will output steam and enter the steam inlet 2 of the heat exchanger 7 outside the pipe through the steam pipe. The steam exchanges heat with the circulating water flowing in from the circulating water inlet 4 in the heat exchanger 7 outside the pipe, and the heat is taken away and recovered from the circulating water outlet 5 and is collected into the main pipe. The steam is condensed and flows from the condensate outlet 6 into the condensate inlet 18, and the endothermic reaction is performed again.
In the whole process, the heat conduction medium absorbs heat and releases heat in the ascending tube shell 15, the circulating water is subjected to heat conversion with the heat exchanger 7 outside the ascending tube, the risk of water leakage can be avoided due to indirect heat exchange of the heat tube, potential safety hazards are eliminated, once the heat tube leaks, the heat conduction medium in the tube can be instantly evaporated, any influence on the ascending tube and the coke oven can be avoided, only replacement and maintenance are needed, and in the same way, if the heat exchanger 7 outside the tube is damaged, the circulating water can not flow into the ascending tube. In general, the device absorbs heat of the coke oven ascending pipe through a heat conduction medium, generates superheated steam and transmits the superheated steam to the heat exchanger outside the pipe, circulating water absorbs and takes away the heat of the heat exchanger outside the pipe and gathers the heat to a water return main pipe, so that safe recovery of the heat of the coke oven ascending pipe is realized, indirect heat transmission is realized, and circulating water does not enter the ascending pipe, thereby being safe and stable.
Example two
Compared with the first embodiment, the heat exchange pipe fitting in the embodiment adopts another structural style.
As shown in fig. 3, the heat exchange tube includes an upper header 9, a lower header 13, a condensate downcomer 19, and three vapor risers 16. The bottom end of the steam rising pipe 16 is fixedly connected and communicated with the lower header 13, the top end of the steam rising pipe 16 is fixedly connected and communicated with the upper header 9, and the upper header 9 is provided with a communication nozzle connected with the steam inlet 2 at the top end of the external heat exchanger 7 through an external steam pipeline; the top end of the condensate water downcomer 19 is provided with a condensate water inlet 18, and the bottom end of the condensate water downcomer 19 is fixedly connected and communicated with the lower header 13.
The difference between the heat exchange tube in this embodiment and the first embodiment is that: the heat transfer medium in the first embodiment is dispersed through the upper header 9 and then introduced into the plurality of condensate water downcomers 19, so that the heat absorption area of the heat transfer medium can be increased, that is, the heat absorption efficiency is improved, and finally the formed steam is discharged from the single steam riser 16. In this embodiment, the heat transfer medium is introduced through a single condensate water downcomer 19, and although the heat absorption area is reduced, the steam formed by heat absorption of the heat transfer medium can be discharged through a plurality of steam risers 16, thereby rapidly releasing the pipeline pressure. The two modes are beneficial and beneficial, the two modes can be reasonably selected according to actual conditions, an upper header 9 and a plurality of steam rising pipes 16 can be additionally added on the basis of the first embodiment, and the newly added upper header 9 is utilized to collect steam led out by the plurality of steam rising pipes 16, so that the effect of quickly releasing pipeline pressure in the second embodiment can be achieved.
The above-described embodiments are merely a few alternative embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (7)
1. The utility model provides an outside heat transfer's tedge waste heat recovery device, includes tedge casing (15), its characterized in that still includes:
An external heat exchanger (7);
the heat exchange pipe fitting is positioned inside the riser housing (15) and comprises an upper header (9), a lower header (13), a condensate water downcomer (19) and a steam riser (16);
the water circulation device (1), the water circulation device (1) is provided with a circulating water outlet main pipe and a circulating water return main pipe.
2. The external heat exchange riser waste heat recovery device according to claim 1, wherein the bottom end of the steam riser (16) is fixedly connected and communicated with the lower header (13), and the top end of the steam riser (16) is externally connected with a steam pipeline.
3. An external heat exchange riser waste heat recovery device according to claim 2, wherein the top end of the condensate water downcomer (19) is fixedly connected and communicated with the upper header (9), and the bottom end of the condensate water downcomer (19) is fixedly connected and communicated with the lower header (13).
4. A riser waste heat recovery device for external heat exchange according to claim 3, wherein the upper header (9) is provided with a condensate water inlet (18), and the condensate water inlet (18) communicates with a condensate water downcomer (19).
5. The rising pipe waste heat recovery device for external heat exchange according to claim 4, wherein a steam inlet (2) is arranged at the top end of the external heat exchanger (7), the steam inlet (2) is communicated with a steam rising pipe (16) through an external pipeline, a condensed water outlet (6) is arranged at the bottom end of the external heat exchanger (7), and the condensed water outlet (6) is in butt joint with a condensed water inlet (18).
6. The rising pipe waste heat recovery device for external heat exchange according to claim 5, wherein a heat exchange pipe (3) is arranged inside the heat exchanger (7) outside the pipe, the top end of the heat exchange pipe (3) is communicated with the steam inlet (2), and the bottom end of the heat exchange pipe (3) is communicated with the condensed water outlet (6).
7. The rising pipe waste heat recovery device for external heat exchange according to claim 6, wherein the external heat exchanger (7) is provided with a circulating water inlet (4) and a circulating water outlet (5), the circulating water inlet (4) is communicated with a circulating water outlet main pipe of the water circulating equipment (1), and the circulating water outlet (5) is communicated with a circulating water inlet main pipe of the water circulating equipment (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322730352.XU CN220959752U (en) | 2023-10-11 | 2023-10-11 | External heat exchange's tedge waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322730352.XU CN220959752U (en) | 2023-10-11 | 2023-10-11 | External heat exchange's tedge waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220959752U true CN220959752U (en) | 2024-05-14 |
Family
ID=91018038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322730352.XU Active CN220959752U (en) | 2023-10-11 | 2023-10-11 | External heat exchange's tedge waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220959752U (en) |
-
2023
- 2023-10-11 CN CN202322730352.XU patent/CN220959752U/en active Active
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