CN218755576U - Tube nest heat exchanger for coke oven ascending tube - Google Patents
Tube nest heat exchanger for coke oven ascending tube Download PDFInfo
- Publication number
- CN218755576U CN218755576U CN202223026131.6U CN202223026131U CN218755576U CN 218755576 U CN218755576 U CN 218755576U CN 202223026131 U CN202223026131 U CN 202223026131U CN 218755576 U CN218755576 U CN 218755576U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- groups
- coke oven
- heat
- inner tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a tubular heat exchanger for coke oven ascension pipe includes heat transfer component, inner tube and urceolus from inside to outside in proper order, heat transfer component includes a plurality of groups heat exchange pipe, a plurality of groups the inboard at the inner tube is evenly arranged to the heat exchange pipe, and a plurality of groups the inner chamber that the heat exchange pipe formed is raw coke oven gas passageway, it has the heat-conducting layer to fill in the space between inner tube and a plurality of groups heat exchange pipe, be provided with thermal-insulated heat preservation between inner tube and the urceolus, thermal-insulated heat preservation adopts aerogel fibrofelt and multilayer setting, the equal fixed mounting in both ends of inner tube and urceolus has the flange piece, a plurality of groups the heat exchange pipe all adopts seamless steel tube to process and forms, does not have any welding seam with raw coke oven gas contact site, a plurality of groups the mounting means of heat exchange pipe is arranged for the riser circumference, can follow axial direction free expansion, a plurality of groups the surface of heat exchange pipe scribbles temperature resistant coating, the utility model has the characteristics that heat exchange efficiency is high.
Description
Technical Field
The utility model relates to the technical field of coke oven heat exchange, in particular to a tube nest heat exchanger for a coke oven ascending tube.
Background
At present, the domestic coking process mainly comprises the steps of heating and dry distilling coking coal in a coke oven by isolated air to generate coke and simultaneously generating a large amount of volatilized raw coke gas. Sensible heat brought out by red coke at 950-1050 ℃ pushed out of a coke oven carbonization chamber accounts for 37% of the coke oven branch heat; the sensible heat carried out by the raw coke oven gas at the temperature of 650-800 ℃ accounts for 36 percent of the coke oven branch heat; the exhaust gas of the 180-230 ℃ coke oven flue takes out 17% of the coke oven branch heat; the heat loss on the surface of the furnace body accounts for 10 percent of the heat output by the coke oven.
At present, the heat of raw coke oven gas is recovered by mature waste heat recovery technology of a coke oven ascending pipe, and the core equipment of the waste heat recovery technology is an ascending pipe heat exchanger. The riser heat exchanger mainly comprises three structural types, namely a jacket type structure, an outer coil type structure and an inner insertion type structure.
The jacketed riser heat exchanger consists of a water jacket layer, an inner cylinder, a shell and the like, and generates steam by exchanging heat between water and high-temperature raw coke oven gas.
The outer coil type ascending pipe heat exchanger comprises a coil, a heat conducting layer, an inner cylinder, a shell and the like, and generates steam by exchanging heat between water and high-temperature raw coke oven gas.
The heat exchange space of the two heat exchangers is outside the inner cylinder of the ascending pipe.
The inner inserting type heat exchanger is composed of a heat exchange tube, a fixing frame and the like, is directly installed in the ascending tube, and exchanges heat with high-temperature raw coke oven gas through water to generate steam. The heat exchange space of the heat exchanger is arranged in the ascending pipe.
The inner cylinder of the jacketed riser heat exchanger is subjected to external pressure, the steam production pressure is low, and medium and high pressure steam cannot be produced; the heat exchange space of the outer coil type ascending pipe heat exchanger is not in direct contact with raw coke oven gas on the outer side of the inner barrel of the ascending pipe, so that the heat exchange efficiency is relatively low, and the tube pass resistance is large; the inserted heat exchanger occupies the circulation area of the raw coke oven gas, is not beneficial to the circulation of the raw coke oven gas, is directly contacted with the raw coke oven gas and has the danger of corrosion and leakage.
Therefore, it is necessary to provide a tube still heat exchanger for a coke oven riser to solve the above problems.
Disclosure of Invention
Based on the above-mentioned problem that exists among the prior art, the utility model discloses an aim at: provides a tubular heat exchanger for a coke oven ascending tube.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a tubular heat exchanger for coke oven ascension pipe, includes heat exchange assembly, inner tube and urceolus from inside to outside in proper order, heat exchange assembly includes a plurality of groups heat exchange tube, a plurality of groups the heat exchange tube is evenly arranged in the inboard of inner tube, and a plurality of groups the inner chamber that the heat exchange tube formed is the raw coke oven gas passageway, it has the heat-conducting layer to fill in the space between inner tube and the heat exchange tube of a plurality of groups, be provided with thermal-insulated heat preservation between inner tube and the urceolus, thermal-insulated heat preservation adopts aerogel fibrofelt and multilayer setting, the equal fixed mounting in both ends of inner tube and urceolus has the flange piece.
Furthermore, the heat exchange tubes of a plurality of groups are all formed by processing seamless steel tubes, no welding seam exists at the contact part of the heat exchange tubes and the raw coke oven gas, the heat exchange tubes of the plurality of groups are arranged in the circumferential direction of the vertical tube in an installation mode and can freely expand along the axial direction, and the outer surfaces of the heat exchange tubes of the plurality of groups are coated with temperature-resistant coatings.
Further, the inner tube is formed by processing seamless steel tubes, no welding seam exists at the contact position of the inner tube and raw coke oven gas, an inner expansion joint is arranged at the middle section position of the inner tube and can compensate thermal extension expansion in the axial direction, the outer tube is made of stainless steel and improves corrosion resistance, an outer expansion joint is arranged at the middle section of the outer tube and can compensate thermal extension expansion in the axial direction, and the expansion directions of the inner expansion joint and the outer expansion joint are consistent.
Furthermore, a water inlet is installed to one of them group's of a plurality of groups heat exchange tube bottom, and the delivery port is installed to the top of one of them group, the distributor is all installed to the tip of heat exchange tube.
Furthermore, a plurality of groups of leakage detection holes are uniformly distributed at the upper end and the lower end of the outer barrel.
The utility model has the advantages that: the utility model provides a tubular heat exchanger for coke oven ascension pipe, through being provided with the heat transfer subassembly, the heat exchange tube is arranged vertically and is evenly distributed in the internal circumferencial direction of inner tube, and heat transfer medium enters the heat exchange tube and exchanges heat with high temperature crude gas, can produce saturated steam and superheated steam of different pressure grades; the heat exchange tube has high pressure resistance, does not belong to a pressure container, and does not need periodic annual inspection; compared with a coil type heat exchanger, the heat exchanger has the advantages of high heat exchange efficiency, sufficient heat absorption and small resistance.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic top sectional view of the present invention;
FIG. 3 is a schematic view of the structure of the coating of the heat exchange tube of the present invention;
wherein, in the figures, the respective reference numerals:
1. an outer cylinder; 2. an inner barrel; 3. a heat exchange pipe; 4. a raw gas channel; 5. a heat conductive layer; 6. a heat insulation layer; 7. an outer expansion joint; 8. an inner expansion joint; 9. a water inlet; 10. a water outlet; 11. a dispenser; 12. a leak detection hole; 13. and (4) a temperature-resistant coating.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model provides a tube nest heat exchanger for coke oven ascension pipe, from inside to outside include heat transfer assembly in proper order, inner tube 2 and urceolus 1, heat transfer assembly includes a plurality of groups heat exchange tube 3, a plurality of groups heat exchange tube 3 evenly arranges the inboard at inner tube 2, the inner chamber that a plurality of groups heat exchange tube 3 formed is raw coke oven gas passageway 4, water inlet 9 is installed to one of them group bottom of a plurality of groups heat exchange tube 3, delivery port 10 is installed on one of them group's top, distributor 11 is all installed to the tip of heat exchange tube 3, it has heat-conducting layer 5 to fill in the space between inner tube 2 and a plurality of groups heat exchange tube 3, be provided with thermal-insulated heat preservation 6 between inner tube 2 and the urceolus 1, thermal-insulated heat preservation 6 adopts aerogel fibrofelt and multilayer setting, the equal fixed mounting in both ends of inner tube 2 and urceolus 1 has the flange piece, the upper and lower extreme of urceolus 1 has evenly distributed a plurality of groups and reveals inspection hole 12.
The groups of heat exchange pipes 3 are all formed by processing seamless steel pipes, no welding seam exists at the contact part of the heat exchange pipes and the raw coke oven gas, the groups of heat exchange pipes 3 are arranged in the mode of the circumference of the vertical pipe and can freely expand along the axial direction, and the outer surfaces of the groups of heat exchange pipes 3 are coated with temperature-resistant coatings 13.
The inner barrel 2 is formed by processing seamless steel pipes, no welding seam exists at the contact part of the inner barrel 2 and raw coke oven gas, an inner expansion joint 8 is arranged at the middle section of the inner barrel 2 and can compensate thermal extension expansion in the axial direction, the outer barrel 1 is made of stainless steel and improves corrosion resistance, an outer expansion joint 7 is arranged at the middle section of the outer barrel 1 and can compensate thermal extension expansion in the axial direction, and the expansion directions of the inner expansion joint 8 and the outer expansion joint 7 are consistent.
The first embodiment is as follows: when saturated steam needs to be generated, demineralized water enters the steam pocket after being deoxidized, water is sent into the water inlet 9 by the forced circulation pump and enters each heat exchange tube 3 for heat exchange after passing through the distributor 11, the distributor has the function of facilitating the connection and fixation of the heat exchange tubes, on the other hand, the distribution of heat exchange media is convenient, the heat exchange tubes 3 absorb the heat of the raw gas in the raw gas channel 4, the heat conduction layer 5 can help the heat exchange tubes 3 to better absorb the heat, the outer surface of the heat exchange tubes 3 is also coated with the temperature-resistant coating 13 which has the functions of high temperature resistance and corrosion resistance, can effectively prevent the corrosion of corrosive media in the raw gas, has high heat conductivity coefficient, forms a smooth glaze surface at high temperature, is not easy to adhere impurities and effectively ensures the heat exchange efficiency, and the heat-insulating layer 6 is arranged between the inner tube 2 and the outer tube 1, thermal-insulated heat preservation 6 adopts the aerogel fibrofelt, multilayer structure, make external temperature effectively reduced on the one hand, the environmental protection, on the other hand makes the heat not outer to scatter, guarantee that inside carries out abundant heat exchange, but outer expansion joint 7 and inner expansion joint 8 compensation axial direction's thermal elongation inflation, prevent that 2 internal pressure of inner tube are too big, produce the distributor 11 that steam-water mixture passes through delivery port 10, send into the steam drum and carry out steam-water separation, steam passes through the steam outlet process flowmeter of steam drum and sees off, the water that does not vaporize reentrants system circulation heat transfer, the circulation produces the saturated steam that accords with required pressure, the inspection hole 12 of revealing of lower extreme distribution on the urceolus, detectable equipment operation condition.
Example two: when the superheated steam is required to be generated, the saturated steam enters each heat exchange tube 3 from the water inlet 9 through the distributor 11 for heat exchange to absorb the heat of the raw coke oven gas and generate the superheated steam, and the superheated steam is supplied to a user for use through the water outlet 10
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a coke oven is tubulation heat exchanger for tedge, includes heat exchange assemblies, inner tube (2) and urceolus (1) from inside to outside in proper order, its characterized in that: the heat exchange assembly comprises a plurality of groups of heat exchange tubes (3) and a plurality of groups the heat exchange tubes (3) are uniformly arranged on the inner side of the inner tube (2) and a plurality of groups of heat exchange tubes (3) are raw gas channels (4), heat conducting layers (5) are filled in gaps between the inner tube (2) and the plurality of groups of heat exchange tubes (3), heat insulating layers (6) are arranged between the inner tube (2) and the outer tube (1), the heat insulating layers (6) are formed by aerogel fiber mats and multiple layers, and flange pieces are fixedly arranged at two ends of the inner tube (2) and the outer tube (1).
2. The tubular heat exchanger for the coke oven ascension pipe according to claim 1, wherein: the heat exchange tubes (3) are all formed by processing seamless steel tubes, no welding seam exists at the contact position of the heat exchange tubes and raw coke oven gas, the heat exchange tubes (3) are arranged in the mode of being arranged on the circumference of a vertical tube and can freely expand along the axial direction, and the outer surfaces of the heat exchange tubes (3) are coated with temperature-resistant coatings (13).
3. The tubular heat exchanger for the coke oven ascension pipe of claim 1, wherein: inner tube (2) adopt seamless steel pipe processing to form, do not have any welding seam with raw coke oven gas contact site, the middle section position of inner tube (2) is equipped with interior expansion joint (8), can compensate axial direction's thermal elongation expansion, urceolus (1) adopts stainless steel, improves corrosion resistance, the middle section of urceolus (1) is provided with outer expansion joint (7), can compensate axial direction's thermal elongation expansion, the direction of expansion of interior expansion joint (8) and outer expansion joint (7) is unanimous.
4. The tubular heat exchanger for the coke oven ascension pipe according to claim 1, wherein: a water inlet (9) is installed at the bottom end of one of the groups of the heat exchange tubes (3), a water outlet (10) is installed at the top end of the other group of the heat exchange tubes, and distributors (11) are installed at the end parts of the heat exchange tubes (3).
5. The tubular heat exchanger for the coke oven ascension pipe of claim 1, wherein: the upper end and the lower end of the outer barrel (1) are uniformly provided with a plurality of groups of leakage detection holes (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026131.6U CN218755576U (en) | 2022-11-15 | 2022-11-15 | Tube nest heat exchanger for coke oven ascending tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026131.6U CN218755576U (en) | 2022-11-15 | 2022-11-15 | Tube nest heat exchanger for coke oven ascending tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218755576U true CN218755576U (en) | 2023-03-28 |
Family
ID=85648349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223026131.6U Active CN218755576U (en) | 2022-11-15 | 2022-11-15 | Tube nest heat exchanger for coke oven ascending tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218755576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608713A (en) * | 2023-06-01 | 2023-08-18 | 泰安市金水龙金属容器有限公司 | Bionic parallel flow heat exchanger |
-
2022
- 2022-11-15 CN CN202223026131.6U patent/CN218755576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608713A (en) * | 2023-06-01 | 2023-08-18 | 泰安市金水龙金属容器有限公司 | Bionic parallel flow heat exchanger |
| CN116608713B (en) * | 2023-06-01 | 2024-05-28 | 泰安市金水龙金属容器有限公司 | Bionic parallel flow heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218755576U (en) | Tube nest heat exchanger for coke oven ascending tube | |
| CN205061967U (en) | Coke oven tedge heat transfer device | |
| CN214582646U (en) | Split-cavity water chamber jacket type ascending pipe heat exchanger | |
| CN109556439B (en) | Energy-saving and environment-friendly waste heat recovery equipment | |
| CN220039179U (en) | Novel preheating evaporator for solar thermal power generation system | |
| CN111721145A (en) | Heat exchanger suitable for recovering waste heat of coke oven ascending pipe | |
| CN108373925B (en) | Coke oven raw gas sensible heat recycling device | |
| CN104075336B (en) | A kind of energy recycle device | |
| CN211291118U (en) | Novel riser waste heat recovery device with efficient heat exchange function | |
| CN211575071U (en) | Raw coke oven gas high temperature waste heat recovery device | |
| CN211084895U (en) | Spiral coil type ascending pipe heat exchanger | |
| CN214065789U (en) | Composite coil type ascending pipe heat exchange device | |
| CN211147395U (en) | Tube plate cooling structure under shell-and-tube high temperature air heater | |
| CN201705294U (en) | Pipe type heating furnace | |
| CN103292305A (en) | Radial heat tube-ordinary heat exchange tube combined type waste heat recovery device for flue tail gases | |
| CN211667796U (en) | Shell and tube raw coke oven gas waste heat recovery device | |
| CN204881281U (en) | High temperature is poor, high pressure is poor, easily maintain steam generator | |
| CN207811662U (en) | A kind of waste heat of coke oven crude gas recovery system based on power-saving technology | |
| CN216550272U (en) | Coke oven tedge waste heat recovery device | |
| CN210165351U (en) | Synthetic waste heat boiler with superheated steam as byproduct | |
| CN206345820U (en) | A kind of waste-heat recovery device of coal oven dithio-gas | |
| CN218120688U (en) | U type pipe tedge raw coke oven gas waste heat recovery device | |
| CN215930637U (en) | Stable and reliable ascending pipe heat exchange device | |
| CN111120987A (en) | Plug-in type raw coke oven gas waste heat recovery device and method and application in benzene removal and ammonia distillation process | |
| CN203823789U (en) | Fuel gas waste heat recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |