CN211782876U - U-shaped tubular raw coke oven gas heat exchanger for coke oven - Google Patents
U-shaped tubular raw coke oven gas heat exchanger for coke oven Download PDFInfo
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- CN211782876U CN211782876U CN201922281212.2U CN201922281212U CN211782876U CN 211782876 U CN211782876 U CN 211782876U CN 201922281212 U CN201922281212 U CN 201922281212U CN 211782876 U CN211782876 U CN 211782876U
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Abstract
The utility model relates to a U-shaped tubular crude gas heat exchanger for coke oven, which comprises a heat exchange tube, wherein the heat exchange tube is a cavity which can be used for fluid flow, one end of the heat exchange tube is a liquid inlet, the other end of the heat exchange tube is a liquid outlet, the liquid inlet and the liquid outlet are arranged on the same horizontal plane on the upper edge of the heat exchange tube, and the heat exchange tube is formed by connecting a plurality of U-shaped tubes through a communicating tube; the heat exchange tube is arranged on a connecting flange for fixing the ascending tube, and the connecting flange is arranged on a tube body of the heat exchange tube and is at the same horizontal height with the liquid inlet and the liquid outlet; the U-shaped pipe is a seamless pipe body made of seamless heat-resistant alloy steel, an anti-corrosion layer and a heat conduction layer are arranged on the outer side of the heat exchange pipe, the anti-corrosion layer is arranged on the inner layer, and the heat conduction layer is arranged on the outer layer. The heat exchanger is directly contacted with the raw coke oven gas, so that the heat exchange efficiency is high; the heat exchange tube is made of heat-resistant alloy steel, is coated with a corrosion-resistant layer and a heat conduction layer, is high-temperature resistant and corrosion resistant, has no welding seam at the contact part with the raw coke oven gas, and is safe and reliable; convenient construction, low investment, high economic performance and wide application range.
Description
Technical Field
The utility model belongs to the technical field of the heat exchanger, concretely relates to U type tubular raw coke oven gas heat exchanger for coke oven.
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. For the treatment of high-temperature raw gas, heat exchangers are generally adopted for heat recovery, and the commonly used heat exchangers are jacket type ascending tube heat exchangers and coil type ascending tube heat exchangers.
The heat exchange spaces of the two heat exchangers are arranged outside the inner barrel of the ascending pipe and are not in direct contact with the raw coke oven gas, so that the heat exchange efficiency is low; the two riser heat exchangers need to replace the original riser, so that the investment cost is high, the construction is troublesome, and the normal production of the coke oven can be influenced in the construction process; the two riser heat exchangers are pressure vessels, need annual inspection and are inconvenient to overhaul.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: to the above defect, the utility model provides a U type tubular raw coke oven gas heat exchanger for coke oven can place the tedge in inside, need not change the structure of current tedge, and it is convenient to be under construction, and heat exchange efficiency is high.
The utility model provides a technical scheme that its technical problem adopted as follows: the utility model provides a U type tubular crude gas heat exchanger for coke oven, includes the heat exchange tube, the heat exchange tube is the cavity that can be used to the fluid flow, heat exchange tube one end is the inlet, and the other end is the liquid outlet, inlet and liquid outlet setting are on the same horizontal plane of heat exchange tube top edge, the heat exchange tube is formed through connecting communicating pipe for a plurality of U type pipes. The tubular raw coke oven gas heat exchanger formed by the communicating pipes through the plurality of U-shaped pipes can be internally arranged in the ascending pipe under the condition that the structure of the existing ascending pipe is not changed, so that the construction is convenient and fast; the heat exchange medium flows into the raw gas heat exchanger, the raw gas flows outside the U-shaped pipe, and heat exchange is carried out between the raw gas heat exchanger and the U-shaped pipe, so that compared with the mode that the raw gas heat exchanger is arranged outside the ascending pipe, the heat exchange area is increased, the heat exchange efficiency is high, and heat absorption is sufficient; the liquid inlet and the liquid outlet of the heat exchanger are arranged on the same horizontal plane, and the heat exchanger does not belong to a pressure container, does not need periodic annual inspection and has long service life.
Furthermore, the U-shaped pipe is a seamless pipe body, and the seamless pipe body is adopted, so that raw coke oven gas can be effectively prevented from entering the heat exchanger from a welded joint, the service life of the heat exchanger is influenced, and the safety performance of the heat exchanger is high.
Further, the heat exchange tube sets up on being used for fixing the flange in tedge, flange sets up on the heat exchange tube body, and with inlet and liquid outlet at same level, the flange that sets up is favorable to this heat exchanger at the inside installation location of tedge, and the construction is convenient, and the investment is little, and the benefit is high.
Furthermore, the communicating pipe is arranged at the same height as the connecting flange, and the communicating pipe and the connecting flange are at the same height, so that the communicating pipe is arranged at the upper part of the heat exchanger, namely, the communicating pipe is arranged in the ascending pipe and does not have any welding line at the contact part of the ascending pipe and the raw coke oven gas, and the use safety of the heat exchanger is further improved.
Furthermore, the U-shaped tube bodies in the heat exchange tubes are connected through connecting plates, and the connecting plates correspond to the vertical tubes of the U-shaped tubes in shape. The connecting pipe is arranged, so that the connecting strength of the U-shaped pipes connected with each other can be improved.
Further, an anti-corrosion layer and a heat conduction layer are arranged on the outer side of the heat exchange tube, the anti-corrosion layer is arranged on the inner layer, and the heat conduction layer is arranged on the outer layer; the anticorrosive coating is a ceramic-based coating, and the heat conducting layer is a nano-scale silicon carbide powder coating. The heat exchange tube is internally provided with an anticorrosive layer prepared from a ceramic-based coating, has high temperature resistance and corrosion resistance, and can effectively prevent corrosion of corrosive media in raw coke oven gas; the heat conduction layer that the outside was nanometer carborundum powder spraying preparation, coefficient of heat conductivity is high, forms smooth glaze simultaneously under the high temperature, and difficult adhesion impurity effectively ensures heat exchange efficiency.
Furthermore, the U-shaped pipe is made of seamless heat-resistant alloy steel. The heat-resistant alloy steel is adopted, so that the heat-resistant alloy steel is high-temperature resistant, safe and reliable.
The utility model has the advantages that:
1. the pipe type raw coke oven gas heat exchanger formed by the communicating pipes through the plurality of U-shaped pipes can be internally arranged in the ascending pipe under the condition of not changing the structure of the existing ascending pipe, so that the construction is convenient and fast; the heat exchange medium enters the raw gas heat exchanger to flow, the raw gas flows outside the U-shaped pipe, the heat exchanger is in direct contact with the raw gas, the heat exchange area of the heat exchanger and the raw gas is increased compared with the heat exchange area of the raw gas heat exchanger arranged outside the ascending pipe, the heat exchange efficiency is high, and the heat absorption is sufficient; the liquid inlet and the liquid outlet of the heat exchanger are arranged on the same horizontal plane, and the heat exchanger does not belong to a pressure container, does not need periodic annual inspection and has long service life.
2. The heat-resistant alloy steel is adopted, and the seamless pipe body is adopted, so that raw coke oven gas can be effectively prevented from entering the heat exchanger from a welded joint, the service life of the heat exchanger is influenced, and the safety performance of the heat exchanger is high; the communicating pipe and the connecting flange are at the same height, which shows that the communicating pipe is arranged at the upper part of the heat exchanger, namely, the communicating pipe is arranged in the ascending pipe and has no welding seam at the contact part with the raw coke oven gas, thereby further improving the use safety of the heat exchanger; the heat exchange tube is internally provided with an anticorrosive layer prepared from a ceramic-based coating, has high temperature resistance and corrosion resistance, and can effectively prevent corrosion of corrosive media in raw coke oven gas; the heat conduction layer that the outside was nanometer carborundum powder spraying preparation, coefficient of heat conductivity is high, forms smooth glaze simultaneously under the high temperature, and difficult adhesion impurity effectively ensures heat exchange efficiency.
3. The arranged connecting flange is beneficial to the installation and positioning of the heat exchanger in the ascending pipe, and has the advantages of convenient construction, small investment and high benefit; the connecting pipe is arranged, so that the connecting strength of the U-shaped pipes connected with each other can be improved.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the corrosion structure of the present invention;
FIG. 3 is a cross-sectional view of the heat exchange tube of the present invention;
wherein: the heat exchange tube is 1, the U-shaped tube is 11, the communicating tube is 12, the anticorrosive coating is 13, the heat conducting layer is 14, the liquid inlet is 2, the liquid outlet is 3, the connecting flange is 4, and the connecting plate is 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the U-shaped tubular raw coke oven gas heat exchanger for the coke oven comprises a heat exchange tube 1, wherein the heat exchange tube 1 is a cavity for fluid to flow, one end of the heat exchange tube 1 is a liquid inlet 2, the other end of the heat exchange tube 1 is a liquid outlet 3, the liquid inlet 2 and the liquid outlet 3 are arranged on the same horizontal plane of the upper edge of the heat exchange tube 1, the heat exchange tube 1 is arranged on a connecting flange 4 for fixing on an ascending tube, and the connecting flange 4 is arranged on the tube body of the heat exchange tube 1 and is at the same horizontal height with the liquid inlet 2 and the liquid; the heat exchange tube 1 is formed by connecting a plurality of U-shaped tubes 11 through communicating tubes 12, the number of the U-shaped tubes 11 is 3 in the embodiment, and the communicating tubes 12 are arranged at the same height with the connecting flange 4; the U-shaped pipe 11 is a seamless pipe body made of seamless heat-resistant alloy steel; an anticorrosive layer 13 prepared by a ceramic-based coating and a heat conduction layer 14 sprayed by nano-scale silicon carbide powder are arranged outside the heat exchange tube 1, the anticorrosive layer 13 is arranged on the inner layer, and the heat conduction layer 14 is arranged on the outer layer; the heat exchange tube 1 is characterized in that the tube bodies of 3U-shaped tubes 11 are connected through a connecting plate 5, and the connecting plate 5 corresponds to 6 vertical tubes of the 3U-shaped tubes 11 in shape to form a hexagonal structure.
The heat exchanger is directly contacted with the raw coke oven gas, so that the heat exchange efficiency is high; the heat exchange tube is made of heat-resistant alloy steel, is coated with a corrosion-resistant layer and a heat conduction layer, is high-temperature resistant and corrosion resistant, has no welding seam at the contact part with the raw coke oven gas, and is safe and reliable; convenient construction, low investment, high economic performance and wide application range.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a U type tubular crude gas heat exchanger for coke oven, includes heat exchange tube (1), heat exchange tube (1) is the cavity that can be used to the fluid flow, heat exchange tube (1) one end is inlet (2), and the other end is liquid outlet (3), its characterized in that: the liquid inlet (2) and the liquid outlet (3) are arranged on the same horizontal plane of the upper edge of the heat exchange tube (1), and the heat exchange tube (1) is formed by connecting a plurality of U-shaped tubes (11) through a communicating tube (12).
2. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 1, characterized in that: the U-shaped pipe (11) is a seamless pipe body.
3. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 1, characterized in that: the heat exchange tube (1) is arranged on a connecting flange (4) used for being fixed on the ascending tube, and the connecting flange (4) is arranged on a tube body of the heat exchange tube (1) and is at the same horizontal height with the liquid inlet (2) and the liquid outlet (3).
4. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 3, characterized in that: the communicating pipe (12) is arranged at the same height with the connecting flange (4).
5. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 1, characterized in that: the tube body of the U-shaped tube (11) in the heat exchange tube (1) is connected through a connecting plate (5), and the connecting plate (5) corresponds to the vertical tubes of the U-shaped tube (11) in shape.
6. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 1, characterized in that: the heat exchange tube (1) is provided with anticorrosive coating (13) and heat-conducting layer (14) outward, anticorrosive coating (13) set up in the inlayer, heat-conducting layer (14) set up at the skin.
7. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 6, characterized in that: the anticorrosive coating (13) is a ceramic-based coating, and the heat conducting layer (14) is a nano-scale silicon carbide powder coating.
8. The U-shaped tubular crude gas heat exchanger for the coke oven as claimed in claim 2, characterized in that: the U-shaped pipe (11) is made of seamless heat-resistant alloy steel through machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281212.2U CN211782876U (en) | 2019-12-18 | 2019-12-18 | U-shaped tubular raw coke oven gas heat exchanger for coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281212.2U CN211782876U (en) | 2019-12-18 | 2019-12-18 | U-shaped tubular raw coke oven gas heat exchanger for coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211782876U true CN211782876U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922281212.2U Active CN211782876U (en) | 2019-12-18 | 2019-12-18 | U-shaped tubular raw coke oven gas heat exchanger for coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211782876U (en) |
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2019
- 2019-12-18 CN CN201922281212.2U patent/CN211782876U/en active Active
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