CN202754957U - Crude oil unit for processing heavy crude oil - Google Patents
Crude oil unit for processing heavy crude oil Download PDFInfo
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- CN202754957U CN202754957U CN 201220471896 CN201220471896U CN202754957U CN 202754957 U CN202754957 U CN 202754957U CN 201220471896 CN201220471896 CN 201220471896 CN 201220471896 U CN201220471896 U CN 201220471896U CN 202754957 U CN202754957 U CN 202754957U
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- crude oil
- diesel
- pipe
- temperature
- atmospheric
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Abstract
The utility model discloses a crude oil unit for processing heavy crude oil. The crude oil unit comprises a heat-exchanger, an electrical desalting pot, a heat-exchanging device and a normal pressure tower, wherein the heat-exchanger, the electrical desalting pot, the heat-exchanging device and the normal pressure tower are sequentially communicated through a crude oil pipeline. A diesel outlet is arranged on the normal pressure tower and connected with a diesel conveying pipe. The crude oil unit is characterized in that the diesel conveying pipe at the outlet end of a diesel conveying pump is communicated with the crude oil pipeline between the heat-exchanger and the electrical desalting pot through a branch pipe. As the temperature of diesel distillation distilled from the normal pressure tower is high, the diesel distillation is conveyed into the crude oil pipeline in front of the electrical desalting pot through the branch pipe, and mixed with the heated crude oil to instantly raise the temperature of the crude oil so that the temperature of the crude oil when entering the electrical desalting pot reaches the best operation temperature of the electrical desalting pot. The temperature of the crude oil rises, so viscosity of the crude oil is lowered, amount of motion resistance of water drips is reduced, oil-water density difference is increased, desalting and dewatering are benefited, proportion of light distillation in the crude oil is increased, and extraction rate of the normal pressure tower is improved to enable the crude oil unit to work stably.
Description
Technical field
The utility model relates to a kind of atmospheric and vacuum distillation unit of processing heavy crude.
Background technology
At present the atmospheric and vacuum distillation unit of processing heavy crude comprises successively the interchanger by pipeline communication, electrical desalter, heat-exchanger rig and atmospheric tower, atmospheric tower is provided with the diesel oil discharge port, be connected with diesel feeding pipe on the diesel oil discharge port, diesel feeding pipe is provided with diesel transfer pump, crude oil is introduced into the interchanger heat exchange, the heating medium of general interchanger is light oil, because the temperature of light oil is low limited to the heats of crude oil, and the optimum operation temperature of electrical desalter is 120 ℃～140 ℃, temperature when crude oil enters electrical desalter is excessively low, affect the desalting effect of electrical desalter, ratio of desalinization reduces, and the light oil distillate of the heavy crude of processing is few, and the extracting rate of atmospheric tower is low, causes the atmospheric tower job insecurity.
Summary of the invention
The technical problems to be solved in the utility model provides a kind ofly can improve the crude oil desalting rate, improve the atmospheric and vacuum distillation unit of extracting rate simultaneously.
For solving the problems of the technologies described above, the utility model comprises interchanger, electrical desalter, heat-exchanger rig and the atmospheric tower that is communicated with by crude oil pipeline successively, atmospheric tower is provided with the diesel oil discharge port, be connected with diesel feeding pipe on the diesel oil discharge port, its constructional feature is that the diesel feeding pipe of diesel transfer pump exit end is communicated with crude oil pipeline between interchanger and the electrical desalter by take-off pipe.
After adopting said structure, because the diesel oil distillate temperature that fractionates out from atmospheric tower is higher, be delivered in the crude oil pipeline before the electrical desalter by take-off pipe, mix with the crude oil that has heated, thereby improve at once the temperature of crude oil, temperature when making crude oil enter electrical desalter reaches the optimum operation temperature of electrical desalter, the temperature of crude oil its reduced viscosity that raises, reduced the water droplet resistance of motion, also increase simultaneously the profit density difference, be conducive to desalting and dewatering, and increased the proportion of light ends in the crude oil, improved the extracting rate of atmospheric tower, made the atmospheric and vacuum distillation unit working stability.
Crude oil pipeline is provided with thermometer, thermometer is on the pipeline section between take-off pipe and the electrical desalter, but Real Time Observation enters the temperature of the crude oil of electrical desalter, thereby the incorporation of based on crude temperature regulation diesel oil makes the temperature of crude oil reach the optimum operation temperature of electrical desalter.
Described take-off pipe is provided with under meter, but Real Time Observation diesel oil operational throughput.
Described take-off pipe is provided with vacuum breaker, prevents from that former oil pressure is excessive to enter in the diesel feeding pipe by take-off pipe.
Described take-off pipe is provided with automatic regulating valve, can automatically control the addition of diesel oil, controls better the temperature of crude oil.
Described take-off pipe is provided with tensimeter, can the interior pressure of at-once monitor take-off pipe.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the atmospheric and vacuum distillation unit of processing heavy crude comprises interchanger 2, electrical desalter 3, heat-exchanger rig and the atmospheric tower 4 that is communicated with by crude oil pipeline 1 successively, heat-exchanger rig comprises rearmounted crude heat exchanger 13 and process furnace 14, and the heat-exchanger rig heavy crude of desalting and dewatering is heated to the required temperature of atmospheric tower 4 normal operations.Atmospheric tower 4 is provided with diesel oil discharge port and oil discharge port of the normal end, oil discharge port of the normal end is connected with oil transfer lime 15 of the normal end, oil transfer lime 15 of the normal end is provided with oil transferpump 16 of the normal end, be connected with diesel feeding pipe 5 on the diesel oil discharge port, diesel feeding pipe 5 is provided with diesel transfer pump 6, and diesel feeding pipe 5 is communicated with crude oil pipeline 1 between interchanger 2 and the electrical desalter 3 by take-off pipe 7; Diesel transfer pump 6 is on the pipeline section between atmospheric tower diesel oil discharge port and the take-off pipe 7.Crude oil pipeline 1 is provided with thermometer 8, thermometer 8 is on the pipeline section between take-off pipe 7 and the electrical desalter 3, but Real Time Observation enters the temperature of the crude oil of electrical desalter 3, thereby the incorporation of based on crude temperature regulation diesel oil makes the temperature of crude oil reach the optimum operation temperature of electrical desalter 3.Take-off pipe 7 is provided with under meter 9, but Real Time Observation diesel oil operational throughput.Take-off pipe 7 is provided with vacuum breaker 10, prevents from that former oil pressure is excessive to enter in the diesel feeding pipe 5 by take-off pipe 7.Take-off pipe 7 is provided with automatic regulating valve 11, can automatically control the addition of diesel oil, controls better the temperature of crude oil.Take-off pipe 7 is provided with tensimeter 12, can the at-once monitor take-off pipe pressure in 7.
Because the diesel oil distillate temperature that fractionates out from atmospheric tower 4 is higher, be delivered in the crude oil pipeline 1 before the electrical desalter 3 by take-off pipe 7, mix with the crude oil of preheating, thereby improve at once the temperature of crude oil, temperature when making crude oil enter electrical desalter 3 reaches the optimum operation temperature of electrical desalter 3, the temperature of crude oil its reduced viscosity that raises, reduced the water droplet resistance of motion, also increased simultaneously the profit density difference, be conducive to desalting and dewatering, and increased the proportion of light ends in the crude oil, and improved the extracting rate of atmospheric tower, make the atmospheric and vacuum distillation unit working stability.
Claims (6)
1. atmospheric and vacuum distillation unit of processing heavy crude, comprise the interchanger (2), electrical desalter (3), heat-exchanger rig and the atmospheric tower (4) that are communicated with by crude oil pipeline (1) successively, atmospheric tower (4) is provided with the diesel oil discharge port, be connected with diesel feeding pipe (5) on the diesel oil discharge port, diesel feeding pipe (5) is provided with diesel transfer pump (6), and the diesel feeding pipe (5) that it is characterized in that described diesel transfer pump (6) exit end is communicated with crude oil pipeline (1) between interchanger (2) and the electrical desalter (3) by take-off pipe (7).
2. the atmospheric and vacuum distillation unit of processing heavy crude according to claim 1 is characterized in that crude oil pipeline (1) is provided with thermometer (8), and thermometer (8) is positioned on the pipeline section between take-off pipe (7) and the electrical desalter (3).
3. the atmospheric and vacuum distillation unit of processing heavy crude according to claim 1 is characterized in that described take-off pipe (7) is provided with under meter (9).
4. the atmospheric and vacuum distillation unit of processing heavy crude according to claim 1 is characterized in that described take-off pipe (7) is provided with vacuum breaker (10).
5. according to claim 1 to the atmospheric and vacuum distillation unit of 4 each described processing heavy crude, it is characterized in that described take-off pipe (7) is provided with automatic regulating valve (11).
6. the atmospheric and vacuum distillation unit of processing heavy crude according to claim 5 is characterized in that described take-off pipe (7) is provided with tensimeter (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471896 CN202754957U (en) | 2012-09-17 | 2012-09-17 | Crude oil unit for processing heavy crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471896 CN202754957U (en) | 2012-09-17 | 2012-09-17 | Crude oil unit for processing heavy crude oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202754957U true CN202754957U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220471896 Expired - Fee Related CN202754957U (en) | 2012-09-17 | 2012-09-17 | Crude oil unit for processing heavy crude oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN202754957U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479735A (en) * | 2014-12-20 | 2015-04-01 | 镇海石化建安工程有限公司 | Heat exchange system and process of atmospheric and vacuum distillation unit |
| CN104650951A (en) * | 2015-02-05 | 2015-05-27 | 中国海洋石油总公司 | Method and device for solving blockage of crude oil heat exchanger online |
| CN104862003A (en) * | 2015-05-26 | 2015-08-26 | 邓万军 | Long-period running management system for crude oil atmospheric and vacuum distillation unit |
| CN108929718A (en) * | 2017-05-26 | 2018-12-04 | 中国石油天然气股份有限公司 | desalination system and crude oil desalting method |
| CN112812811A (en) * | 2020-12-31 | 2021-05-18 | 恒力石化（大连）炼化有限公司 | Method for blending various crude oils on line |
-
2012
- 2012-09-17 CN CN 201220471896 patent/CN202754957U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479735A (en) * | 2014-12-20 | 2015-04-01 | 镇海石化建安工程有限公司 | Heat exchange system and process of atmospheric and vacuum distillation unit |
| CN104479735B (en) * | 2014-12-20 | 2016-03-30 | 镇海石化建安工程有限公司 | A kind of atmospheric and vacuum distillation unit heat-exchange system and technique |
| CN104650951A (en) * | 2015-02-05 | 2015-05-27 | 中国海洋石油总公司 | Method and device for solving blockage of crude oil heat exchanger online |
| CN104862003A (en) * | 2015-05-26 | 2015-08-26 | 邓万军 | Long-period running management system for crude oil atmospheric and vacuum distillation unit |
| CN104862003B (en) * | 2015-05-26 | 2016-05-25 | 大连碧水蓝天环保科技工程有限公司 | Crude oil atmospheric vacuum distillation device long-term operation management system |
| CN108929718A (en) * | 2017-05-26 | 2018-12-04 | 中国石油天然气股份有限公司 | desalination system and crude oil desalting method |
| CN108929718B (en) * | 2017-05-26 | 2020-12-01 | 中国石油天然气股份有限公司 | Desalting system and crude oil desalting method |
| CN112812811A (en) * | 2020-12-31 | 2021-05-18 | 恒力石化（大连）炼化有限公司 | Method for blending various crude oils on line |
| CN112812811B (en) * | 2020-12-31 | 2022-06-07 | 恒力石化（大连）炼化有限公司 | Method for blending various crude oils on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20130917 |