CN103528404A - Vertical tube shell type rapid cooling heat exchanger - Google Patents
Vertical tube shell type rapid cooling heat exchanger Download PDFInfo
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- CN103528404A CN103528404A CN201310486640.3A CN201310486640A CN103528404A CN 103528404 A CN103528404 A CN 103528404A CN 201310486640 A CN201310486640 A CN 201310486640A CN 103528404 A CN103528404 A CN 103528404A
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- tube
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- rapid cooling
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Abstract
The invention relates to a heat exchanger, in particular to a vertical tube shell type rapid cooling heat exchanger. The vertical tube shell type rapid cooling heat exchanger comprises a cracking cylinder body, and a cracked gas inlet, a water feeding inlet, a heat exchange tube, a water and steam outlet and a cracked gas outlet are sequentially arranged in the cylinder body. The vertical tube shell type rapid cooling heat exchanger is characterized in that the upper portion and the lower portion of the cylinder body are provided with elastic connecting pieces, and an inlet tube plate and an outlet tube plate are arranged at the upper end of the cracked gas inlet and the upper end of the cracked gas outlet, wherein the inlet tube plate and the outlet tube plate are flexible thin tube plates. According to the vertical tube shell type rapid cooling heat exchanger, by the adoption of the flexible thin tube plates and the elastic connecting pieces, a heat-resisting alloy bead weld layer is applied to the outer surface of an inlet tube, a flow guiding device and an anti-coking baffle are additionally arranged to absorb the thermal expansion difference between the heat exchange tube and the cylinder body, thermal stress is reduced, and a good protection effect on the tube plates is achieved.
Description
Technical field
The present invention relates to a kind of heat exchanger, particularly a kind of vertical shell-and-tube rapid-cooling heat exchanger.
Background technology
Rapid-cooling heat exchanger is the very strong key equipment of technique in ethylene cracker, the rapid-cooling heat exchanger of saying cracking gas in technique is mainly divided into one-level rapid-cooling heat exchanger and secondary rapid-cooling heat exchanger, sometimes also can be with three grades of rapid-cooling heat exchangers for gas raw material, and application at present wider be linear rapid-cooling heat exchanger and traditional type rapid-cooling heat exchanger.Linear rapid-cooling heat exchanger treating capacity is less, is difficult to match with the boiler tube of high throughput.
Summary of the invention
The present invention aims to provide a kind of vertical shell-and-tube rapid-cooling heat exchanger; adopt vertical shell-and-tube structure, treating capacity can match with the boiler tube of high throughput greatly, and adopts Methodology for Flexible Thin Tube Sheet and Flexible Connector can reduce thermal stress; reduced that tube sheet lost efficacy possibility, tube sheet played a protective role.
Vertical shell-and-tube rapid-cooling heat exchanger of the present invention, comprise splitting and in cylindrical shell, cylindrical shell, be provided with successively cracking gas entrance, feed-water intake, heat exchanger tube, water, vapor outlet and cracking gas outlet, also comprise that barrel upper and lower is provided with upper end and entrance tube sheet and outlet tube sheet that Flexible Connector and cracking gas entrance and cracking gas outlet are provided with, entrance tube sheet wherein and outlet tube sheet are Methodology for Flexible Thin Tube Sheet.
Preferably, vertical shell-and-tube rapid-cooling heat exchanger of the present invention, entrance tube sheet outer surface is wherein covered with overlay cladding.
Preferably, vertical shell-and-tube rapid-cooling heat exchanger of the present invention, the thickness of overlay cladding is wherein 5~10mm.
Preferably, vertical shell-and-tube rapid-cooling heat exchanger of the present invention, is wherein provided with anti coking baffle in the below of entrance tube sheet.
More preferably, vertical shell-and-tube rapid-cooling heat exchanger of the present invention, is wherein provided with guiding device in steam water interface entrance and exit inner side.
Vertical shell-and-tube rapid-cooling heat exchanger of the present invention; by adopting Methodology for Flexible Thin Tube Sheet and Flexible Connector, at the outer surface of inlet tube, be covered with heat-resisting alloy overlay cladding, add guiding device and anti coking baffle carrys out the thermal expansion difference between absorption heat-exchange pipe and cylindrical shell; reduce thermal stress, tube sheet is played a good protection.
Accompanying drawing explanation
Fig. 1 is the vertical shell-and-tube rapid-cooling heat exchanger structure chart in embodiment 1.
Fig. 2 is the Local map of the vertical shell-and-tube rapid-cooling heat exchanger in embodiment 1.
1-cracking gas entrance; 2-feed-water intake; 3-entrance tube sheet, 4-anti coking baffle; 5-entrance Flexible Connector; 6-elasticity of export connector; 7-entrance guiding device; 8-exports tube sheet; 9-water, vapor outlet; 10-exports guiding device; The outlet of 11-cracking gas; 12-heat exchanger tube; 13-cylindrical shell; 14-heat-resisting alloy overlay cladding.
The specific embodiment
Embodiment 1
Vertical shell-and-tube rapid-cooling heat exchanger of the present invention, comprise cylindrical shell 13, and in cylindrical shell, be provided with successively cracking gas entrance 1, anti coking baffle 4, entrance tube sheet 3, feed-water intake 2, entrance Flexible Connector 5, heat exchanger tube 12, elasticity of export connector 6, water, vapor outlet 9, with outlet tube sheet 8 and cracking gas outlet 11, and at water inlet 2 and water, vapor outlet 9 inner sides are respectively equipped with entrance guiding device 7 and outlet guiding device 10, wherein, entrance tube sheet 3 and outlet tube sheet 8 are Methodology for Flexible Thin Tube Sheet, anti coking baffle 4 is located at the below of entrance tube sheet 3, entrance tube sheet 3 welds by internal bore welding with heat exchanger tube 12, wherein at entrance tube sheet 3 outer surfaces, being covered with thickness is 5~10mm overlay cladding 14, overlay cladding 14 adopts heat-resisting allay material.
Claims (5)
1. a vertical shell-and-tube rapid-cooling heat exchanger, comprise splitting and in cylindrical shell, cylindrical shell, be provided with successively cracking gas entrance (1), feed-water intake (2), heat exchanger tube (12), water, vapor outlet (9) and cracking gas outlet (11), characterized by further comprising barrel upper and lower and be provided with Flexible Connector, the upper end that cracking gas entrance (1) and cracking gas outlet (11) are provided with and entrance tube sheet and outlet tube sheet, entrance tube sheet (3) wherein and outlet tube sheet (8) are Methodology for Flexible Thin Tube Sheet.
2. vertical shell-and-tube rapid-cooling heat exchanger according to claim 1, is characterized in that entrance tube sheet outer surface is covered with overlay cladding (14).
3. vertical shell-and-tube rapid-cooling heat exchanger according to claim 2, the thickness that it is characterized in that overlay cladding (14) is 5~10mm.
4. vertical shell-and-tube rapid-cooling heat exchanger according to claim 1, is characterized in that the below of entrance tube sheet (3) is provided with anti coking baffle (4).
5. vertical shell-and-tube rapid-cooling heat exchanger according to claim 1, is characterized in that being equipped with guiding device at feed-water intake (2) and water, vapor outlet (9) inner side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201310486640.3A CN103528404A (en) | 2013-10-17 | 2013-10-17 | Vertical tube shell type rapid cooling heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310486640.3A CN103528404A (en) | 2013-10-17 | 2013-10-17 | Vertical tube shell type rapid cooling heat exchanger |
Publications (1)
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CN103528404A true CN103528404A (en) | 2014-01-22 |
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CN201310486640.3A Pending CN103528404A (en) | 2013-10-17 | 2013-10-17 | Vertical tube shell type rapid cooling heat exchanger |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115072661A (en) * | 2022-05-31 | 2022-09-20 | 中国石油化工股份有限公司 | Method for preventing converted gas steam converter from dew point corrosion and steam converter |
-
2013
- 2013-10-17 CN CN201310486640.3A patent/CN103528404A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115072661A (en) * | 2022-05-31 | 2022-09-20 | 中国石油化工股份有限公司 | Method for preventing converted gas steam converter from dew point corrosion and steam converter |
CN115072661B (en) * | 2022-05-31 | 2023-08-08 | 中国石油化工股份有限公司 | Method for preventing dew point corrosion of conversion gas steam converter and steam converter |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |
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WD01 | Invention patent application deemed withdrawn after publication |