CN211651324U - Oil-gas heat exchange structure at top of atmospheric and vacuum distillation tower - Google Patents
Oil-gas heat exchange structure at top of atmospheric and vacuum distillation tower Download PDFInfo
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- CN211651324U CN211651324U CN201922432616.7U CN201922432616U CN211651324U CN 211651324 U CN211651324 U CN 211651324U CN 201922432616 U CN201922432616 U CN 201922432616U CN 211651324 U CN211651324 U CN 211651324U
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Abstract
The utility model relates to an atmospheric and vacuum distillation tower top oil gas heat transfer structure, including the distillation column, heat exchanger and oil and gas separator, the heat exchanger adopts plate heat exchanger, the top of the tower oil gas discharge gate of distillation column passes through the heat medium import intercommunication of pipeline and plate heat exchanger, plate heat exchanger's heat medium export is through the feed inlet intercommunication of pipeline and oil and gas separator, through the backflow pipeline intercommunication between oil and gas separator's the liquid phase export and the first top reflux mouth of distillation column, plate heat exchanger's refrigerant import and crude oil conveyer pipe intercommunication, the crude oil import intercommunication of crude oil inlet pipe and distillation column is passed through in the refrigerant export. The utility model discloses can improve the utilization ratio of top of the tower oil gas heat transfer, reduce heat transfer structure area, reduce heat exchanger cleaning cycle and cost.
Description
Technical Field
The utility model belongs to the technical field of crude oil distillation heat transfer, especially relate to an atmospheric and vacuum distillation tower top oil gas heat transfer structure.
Background
The atmospheric and vacuum distillation belongs to a physical process. Crude oil is desalted, dehydrated, heat-exchanged and heated, and then sent into a distillation tower, and is separated into fractions with different boiling points from the top to the bottom of the distillation tower according to the difference of the boiling points, and the fractions are mostly used as raw materials of a secondary processing device, so that atmospheric and vacuum distillation is also called primary processing of the crude oil.
Various heat exchange processes such as preheating, condensation and evaporation boiling are required in the atmospheric and vacuum distillation process. The utilization ratio of the oil-gas heat exchange at the top of the existing atmospheric and vacuum distillation tower is low, and the traditional tube type heat exchanger is usually adopted for the heat exchange process, the tube type heat exchanger needs larger heat transfer area due to low heat exchange coefficient, the occupied area is large, and the shell side internal structure is complex and is not easy to clean due to low flow velocity of the tube side and the shell side, so that the heat exchange process is easy to scale.
Disclosure of Invention
The utility model aims to solve the technical problem that an atmospheric and vacuum distillation tower top oil gas heat transfer structure is provided, improve the utilization ratio of top of the tower oil gas heat transfer, reduce heat transfer structure area, reduce heat exchanger cleaning cycle and cost.
The utility model provides a technical scheme that its technical problem adopted provides an atmospheric and vacuum distillation tower top oil gas heat transfer structure, including distillation column, heat exchanger and oil and gas separator, the heat exchanger adopts plate heat exchanger, the top of the tower oil gas discharge gate of distillation column passes through the heat medium import intercommunication of pipeline and plate heat exchanger, the heat medium export of plate heat exchanger passes through the feed inlet intercommunication of pipeline and oil and gas separator, through the return line intercommunication between the liquid phase export of oil and gas separator and the first top reflux mouth of distillation column, plate heat exchanger's refrigerant import and crude oil conveyer pipe intercommunication, the crude oil import intercommunication of crude oil inlet pipe and distillation column are passed through in the refrigerant export.
And a pipeline at the liquid phase outlet end of the oil-gas separator is provided with a delivery pump.
And a preheater is arranged on the crude oil feeding pipe.
Advantageous effects
The utility model discloses in realize the heat transfer between distillation column tower top oil gas and the crude oil through plate heat exchanger, the heat of make full use of top of the tower oil gas preheats crude oil, and plate heat exchanger heat exchange efficiency is high, has improved the utilization ratio to the top of the tower oil gas heat transfer. Additionally the utility model discloses well adoption plate heat exchanger carries out the heat transfer to the top of the tower oil gas, and more traditional shell and tube heat exchanger has higher coefficient of heat transfer, is favorable to reducing heat transfer area, can reduce heat exchanger equipment's area, and the fluid velocity of flow is high in plate heat exchanger's the runner, and difficult scale deposit is favorable to reducing heat exchanger cleaning cycle and cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The oil-gas heat exchange structure at the top of the atmospheric and vacuum distillation tower shown in figure 1 comprises a distillation tower 1, a heat exchanger 2 and an oil-gas separator 3.
The heat exchanger 2 is a plate heat exchanger. The oil gas discharge port at the top of the distillation tower 1 is communicated with the heat medium inlet of the plate heat exchanger through a pipeline, and the heat medium outlet of the plate heat exchanger is communicated with the feed port of the oil-gas separator 3 through a pipeline. The gas separated by the oil-gas separator 3 enters a catalytic device, a liquid phase outlet of the oil-gas separator 3 is communicated with a primary top reflux opening of the distillation tower 1 through a reflux pipeline 4, a liquid phase part generated in the oil-gas separator 3 is used as primary top reflux to be re-returned to the distillation tower 1, and a pipeline at the liquid phase outlet end of the oil-gas separator 3 is provided with a delivery pump 6.
The refrigerant inlet of the plate heat exchanger is communicated with the crude oil conveying pipe 5, the refrigerant outlet of the plate heat exchanger is communicated with the crude oil inlet of the distillation tower 1 through a crude oil feeding pipe 7, and a preheater 8 is arranged on the crude oil feeding pipe 7.
The tower top oil gas that distillation column 1 produced is carried to plate heat exchanger's heat medium runner, exchanges heat with crude oil, and the heat of make full use of tower top oil gas preheats crude oil, and plate heat exchanger heat exchange efficiency is high, has improved the utilization ratio to the oil gas heat transfer of tower top. In addition, the plate heat exchanger has higher heat transfer coefficient than the traditional shell and tube heat exchanger, is beneficial to reducing heat exchange area, can reduce the floor area of heat exchanger equipment, has high flow velocity of fluid in a flow passage of the plate heat exchanger, is not easy to scale, and is beneficial to reducing the cleaning period and cost of the heat exchanger.
Claims (3)
1. The utility model provides an atmospheric and vacuum distillation tower top oil gas heat transfer structure, includes distillation column (1), heat exchanger (2) and oil and gas separator (3), its characterized in that: the heat exchanger (2) adopts a plate heat exchanger, a tower top oil gas discharge port of the distillation tower (1) is communicated with a heat medium inlet of the plate heat exchanger through a pipeline, a heat medium outlet of the plate heat exchanger is communicated with a feed inlet of the oil-gas separator (3) through a pipeline, a liquid phase outlet of the oil-gas separator (3) is communicated with a primary top reflux port of the distillation tower (1) through a reflux pipeline (4), a refrigerant inlet of the plate heat exchanger is communicated with a crude oil delivery pipe (5), and a refrigerant outlet is communicated with a crude oil inlet of the distillation tower (1) through a crude oil feed pipe (7).
2. The oil-gas heat exchange structure at the top of the atmospheric and vacuum distillation tower as claimed in claim 1, wherein: and a delivery pump (6) is arranged on a pipeline at the liquid phase outlet end of the oil-gas separator (3).
3. The oil-gas heat exchange structure at the top of the atmospheric and vacuum distillation tower as claimed in claim 1, wherein: and a preheater (8) is arranged on the crude oil feeding pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922432616.7U CN211651324U (en) | 2019-12-30 | 2019-12-30 | Oil-gas heat exchange structure at top of atmospheric and vacuum distillation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922432616.7U CN211651324U (en) | 2019-12-30 | 2019-12-30 | Oil-gas heat exchange structure at top of atmospheric and vacuum distillation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211651324U true CN211651324U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922432616.7U Active CN211651324U (en) | 2019-12-30 | 2019-12-30 | Oil-gas heat exchange structure at top of atmospheric and vacuum distillation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211651324U (en) |
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2019
- 2019-12-30 CN CN201922432616.7U patent/CN211651324U/en active Active
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