CN201533999U - Reduced pressure distillation device with transfer line - Google Patents
Reduced pressure distillation device with transfer line Download PDFInfo
- Publication number
- CN201533999U CN201533999U CN2009201205573U CN200920120557U CN201533999U CN 201533999 U CN201533999 U CN 201533999U CN 2009201205573 U CN2009201205573 U CN 2009201205573U CN 200920120557 U CN200920120557 U CN 200920120557U CN 201533999 U CN201533999 U CN 201533999U
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- transfer line
- pipe
- oil transfer
- boiler tube
- draw mouth
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Abstract
The utility model relates to a reduced pressure distillation device with a transfer line, which comprises the transfer line and furnace tubes distributed in a heating furnace, wherein the transfer line is positioned between an outlet for the furnace tubes of the heating furnace and the inlet of a reduced pressure distillation tower, and comprises a high-speed section pipeline and a low-speed section pipeline; a seal head is arranged on the low-speed section pipeline; a plurality of symmetrically distributed drawing pipe mouths are formed on the seal head around the center; the mouth parts of all the drawing pipe mouths are higher than the outer surface of the seal head; the high-speed section pipeline comprises a plurality of branch tubes; a central axis of each drawing pipe mouth after being connected with the corresponding branch tube is parallel to that of the seal head; and multistage expanding transition tubes are mounted in series on the outlet sections of all the furnace tubes, so that the outlet pipe diameters of all the furnace tubes are connected with the corresponding branch tubes. Due to the adoption of the structure, the anti-fatigue performance of the structure is improved, the piping flexibility is great, and the flow line is smooth; and meanwhile, the total length of the transfer line can be effectively shortened, the temperature drop and the pressure drop of the whole transfer line system are reduced, and the purposes of saving energy and cost and improving the production efficiency are achieved finally.
Description
Technical field
The utility model relates to a kind of pressure-reducing line for oil-transferring device, specifically refers to a kind of decompression distillation oil transfer line device that is used for atmospheric and vacuum distillation unit.
Background technology
Decompression distillation oil transfer line device comprises oil transfer line and is distributed in the interior boiler tube of heating furnace, wherein, oil transfer line is the pipe string that heating furnace tube is exported to the destilling tower inlet in the refinery decompressioning device, promptly being made up of high regime pipeline that is connected in the heating furnace tube outlet and the low speed segment pipeline that is connected in the destilling tower inlet, is one of most important process pipelines of oil plant.The quality of oil transfer line design has certain influence to the oil product yield and the energy consumption of atmospheric and vacuum distillation unit, and the design of oil transfer line has substantial connection with the horizontal layout of heating furnace, destilling tower and device again, therefore, the design of oil transfer line is usually as the design focal point of atmospheric and vacuum distillation unit.
Generally, the design of oil transfer line will be taken all factors into consideration according to factors such as the pressure drop of the flow velocity of the character of medium, medium, investment, permission and temperature drops.At present, in the numerous domestic atmospheric and vacuum distillation unit, oil transfer line generally adopts the structural shape of the threeway of Y shape, the threeway of trousers shape or 45 degree mitereds, though this line construction can realize being connected between heating furnace and the destilling tower, but because that the structures of the threeway of Y shape, the threeway of trousers shape or 45 degree mitereds have a weld seam is many, the characteristics of size Control difficulty, thereby it is big to manufacture difficulty, and poor in threeway intersection position stress high concentration, weld seam position anti-fatigue performance, make equipment have potential safety hazard; In order to guarantee that oil product has certain disengaging time, require the length of low speed segment pipeline (being evaporator section) to be not less than 15 meters simultaneously, add high regime oil transfer line length like this, its total length generally will be above 25 meters, thereby make that whole device span is big, consumptive material is many, and causes higher temperature drop and pressure drop.In order to guarantee that higher extracting rate is arranged in the destilling tower, usually toward upper limit control, therefore energy consumption also increases the outlet temperature of heating furnace.
Though and under the cooperation of pressure-reducing line for oil-transferring device anti-coking technology in advanced person's heating furnace, vacuum tower feed distributor and boiler tube of external design, its flow velocity height, can guarantee post-decompression higher extracting rate, but in order to guarantee certain disengaging time, the decompression transfer streamline also designs longlyer, generally at 10 meters-15 meters, thereby still has the defective of bigger pressure drop, temperature drop and greater energy consumption.
The utility model content
Technical problem to be solved in the utility model be provide at above-mentioned prior art present situation a kind of satisfy can shorten effectively under the requirement that oil product separates total time oil transfer line total length and stress distribution rationally, streamline decompression distillation oil transfer line device smoothly.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this decompression distillation oil transfer line device comprises oil transfer line and is distributed in the interior boiler tube of heating furnace, wherein, oil transfer line is between the boiler tube outlet and vacuum distillation tower inlet of heating furnace, it is made up of high regime pipeline that is connected in above-mentioned boiler tube outlet and the low speed segment pipeline that is connected in the destilling tower inlet, it is characterized in that: the end socket that on described low speed segment pipeline, is provided with corresponding high regime pipeline, be provided with the draw mouth of pipe of a plurality of symmetrical distributions on this end socket around the center, the oral area of each draw mouth of pipe is higher than the outer surface of end socket; Above-mentioned high regime pipeline is by constituting with the corresponding many arms of above-mentioned a plurality of draw mouths of pipe, and the central axis of each draw mouth of pipe after connecting corresponding arm parallels with the end socket central axis; Above-mentioned boiler tube also has and the corresponding radical of above-mentioned a plurality of draw mouths of pipe, and is equipped with multistage hole enlargement transition conduit on the outlet section of each boiler tube, and the outlet caliber that makes each boiler tube is connected with corresponding arm.
As further improvement of the utility model, can be equipped with three grades of hole enlargement transition conduit on the outlet section of described each boiler tube, make oil transfer line have more suitable total thread.
In above-mentioned each scheme, the concrete layout of the draw mouth of pipe preferably adopts following scheme: the described draw mouth of pipe can arranged concentric and form a ring-type, and this moment, the draw mouth of pipe can be four, six or eight.Or the design of the draw mouth of pipe is two concentric annular layout.And the draw mouth of pipe that is positioned on the ring preferably is dislocatedly distributed with the draw mouth of pipe that is positioned on the outer shroud, makes whole end socket stressed evenly.At this moment the draw mouth of pipe can be 12, and the draw mouth of pipe that wherein is positioned on the ring has four, and the draw mouth of pipe that is positioned on the outer shroud has eight.
Compared with prior art, owing to set up the end socket of the band draw mouth of pipe on the utility model low speed segment pipeline, and the oral area of each draw mouth of pipe is higher than the outer surface of end socket, thereby each draw mouth of pipe is behind good each the high regime arm of welding, can make the welding position away from stress concentration point on the one hand, can improve the anti-fatigue performance of structure and eliminate safe hidden trouble, make the parallel distribution of each arm on the other hand, avoid the threeway of traditional Y shape, the threeway of trousers shape or the 45 degree required length of mitered and can shorten total thread, and making piping flexible big, streamline is smooth and easy; Secondly by the multistage hole enlargement transition conduit on the boiler tube outlet section, can improve the rate of gasification of oil product in heating furnace, shorten the disengaging time of oil product in the low speed segment pipeline, thereby can shorten the length of low speed segment pipeline; Moreover, after the high regime pipeline adopts a plurality of arms, its thermal compensation is combined by the self compensation and the arm compensation of pipeline, the high regime length of pipeline also can be shortened, the rate of gasification of oil product in pipe is able to further raising, so the utility model can shorten the oil transfer line total length effectively satisfying under the requirement that oil product separates total time, when guaranteeing the oil product extracting rate, reduced the temperature drop and the pressure drop of whole oil transfer line system, thus the purpose that finally can reach energy-conservation, joint money and enhance productivity.
Description of drawings
Fig. 1 is the structural representation of the utility model first embodiment;
Fig. 2 is the structural representation of low speed segment pipeline among Fig. 1;
Fig. 3 is the right view of Fig. 2;
Fig. 4 be among Fig. 1 A-A to cutaway view;
Fig. 5 be among Fig. 4 B-B to cutaway view;
The end enclosure structure schematic diagram of Fig. 6 for adopting among the utility model second embodiment;
Fig. 7 is that the C-C of Fig. 6 is to cutaway view.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Extremely shown in Figure 5 as Fig. 1, this decompression distillation oil transfer line device comprises oil transfer line and the boiler tube 5 that is distributed in the heating furnace 6, described oil transfer line is between boiler tube 5 outlets and vacuum distillation tower 1 inlet of heating furnace 6, form by high regime pipeline and low speed segment pipeline, wherein, the low speed segment pipeline is a straight pipe 2, its end is connected in destilling tower 1 inlet, be welded with end socket 3 on the other end, be provided with the draw mouth of pipe 31 of a plurality of symmetrical distributions on this end socket around the center, in the present embodiment, the draw mouth of pipe 31 has eight, the oral area of each draw mouth of pipe 31 is higher than the outer surface of end socket 3, sees also Fig. 2 and Fig. 3.
Above-mentioned high regime pipeline is made of eight arms 4, and each arm 4 one end is welded on the corresponding draw mouth of pipe 31, and the other end exports with corresponding boiler tube 5 and is connected.After the connection, the central axis of each arm 4 parallels with the central axis of end socket 3, sees also Fig. 1.
Above-mentioned boiler tube 5 also has and the corresponding radical of the above-mentioned draw mouth of pipe, promptly have eight boiler tubes, be distributed in the heating furnace 6 around, see also Fig. 4 and Fig. 5, be equipped with multistage hole enlargement transition conduit on the outlet section of each boiler tube 5, in the present embodiment, be equipped with three grades of hole enlargement transition conduit on the outlet section of each boiler tube, hole enlargement transition conduit at different levels are that an end is small-bore, the bigbore structure of the other end, be that each boiler tube 5 is successively by one-level boiler tube 51, one-level hole enlargement transition conduit 52, secondary boiler tube 53, secondary hole enlargement transition conduit 54, three grades of boiler tubes 55, three grades of hole enlargement transition conduit 56 and level Four boiler tube 57 serial connections form, small-bore and the one-level boiler tube 51 of the transition conduit of one-level hole enlargement just 52 links to each other, the heavy caliber of one-level hole enlargement transition conduit 52 links to each other with an end of secondary boiler tube 53, small-bore the linking to each other of secondary boiler tube 53 other ends and secondary hole enlargement transition conduit 54, the heavy caliber of secondary hole enlargement transition conduit 54 links to each other with an end of three grades of boiler tubes 55, the other end of three grades of boiler tubes 55 links to each other with the small-bore of three grades of hole enlargement transition conduit 56, the heavy caliber of three grades of hole enlargement transition conduit 56 links to each other with an end of level Four boiler tube 57, the other end of level Four boiler tube 57 stretches out the outlet that heating furnace 6 becomes this boiler tube, and this level Four boiler tube then connects with corresponding high regime arm.
During use, enter into each arm of high regime behind high-temperature oil gas each boiler tube in heating furnace, flow in the low speed segment pipeline through end socket then, high-temperature oil gas enters in the destilling tower at last changeing evaporation rapidly in the low speed process at a high speed.
Embodiment two, as shown in Figure 6 and Figure 7, the draw mouth of pipe 31 is 12 in the set end socket of the pressure-reducing line for oil-transferring in the present embodiment, be near the central point that two concentric annular are arranged in end socket 3, the draw mouth of pipe that is positioned on the ring has four, the draw mouth of pipe that is positioned on the outer shroud has eight, and the draw mouth of pipe that is positioned on the ring is dislocatedly distributed with the draw mouth of pipe that is positioned on the outer shroud, makes whole end socket stressed evenly.Other structures are identical with embodiment one, are not repeated at this.
Claims (7)
1. decompression distillation oil transfer line device, comprise oil transfer line and be distributed in the interior boiler tube of heating furnace, wherein, oil transfer line is between the boiler tube outlet and vacuum distillation tower inlet of heating furnace, it is made up of high regime pipeline that is connected in above-mentioned boiler tube outlet and the low speed segment pipeline that is connected in the destilling tower inlet, it is characterized in that: the end socket that on described low speed segment pipeline, is provided with corresponding high regime pipeline, be provided with the draw mouth of pipe of a plurality of symmetrical distributions on this end socket around the center, the oral area of each draw mouth of pipe is higher than the outer surface of end socket; Above-mentioned high regime pipeline is by constituting with the corresponding many arms of above-mentioned a plurality of draw mouths of pipe, and the central axis of each draw mouth of pipe after connecting corresponding arm parallels with the end socket central axis; Above-mentioned boiler tube also has and the corresponding radical of above-mentioned a plurality of draw mouths of pipe, and is equipped with multistage hole enlargement transition conduit on the outlet section of each boiler tube, and the outlet caliber that makes each boiler tube is connected with corresponding arm.
2. decompression distillation oil transfer line device according to claim 1 is characterized in that: be equipped with three grades of hole enlargement transition conduit on the outlet section of described each boiler tube.
3. decompression distillation oil transfer line device according to claim 1 and 2 is characterized in that: described draw mouth of pipe arranged concentric and form a ring-type.
4. decompression distillation oil transfer line device according to claim 3 is characterized in that: the described draw mouth of pipe is four, six or eight.
5. decompression distillation oil transfer line device according to claim 1 and 2 is characterized in that: the described draw mouth of pipe is two concentric annular and arranges.
6. decompression distillation oil transfer line device according to claim 5 is characterized in that: the draw mouth of pipe that is positioned on the described ring is dislocatedly distributed with the draw mouth of pipe that is positioned on the described outer shroud.
7. decompression distillation oil transfer line device according to claim 6 is characterized in that: the described draw mouth of pipe is 12, and the draw mouth of pipe that wherein is positioned on the ring has four, and the draw mouth of pipe that is positioned on the outer shroud has eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205573U CN201533999U (en) | 2009-05-20 | 2009-05-20 | Reduced pressure distillation device with transfer line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205573U CN201533999U (en) | 2009-05-20 | 2009-05-20 | Reduced pressure distillation device with transfer line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533999U true CN201533999U (en) | 2010-07-28 |
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ID=42533785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201205573U Expired - Lifetime CN201533999U (en) | 2009-05-20 | 2009-05-20 | Reduced pressure distillation device with transfer line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201533999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131458A (en) * | 2011-12-05 | 2013-06-05 | 洛阳瑞泽石化工程有限公司 | Atmospheric and vacuum device |
| CN104232142A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工集团公司 | Transfer line in completely symmetrical arrangement |
-
2009
- 2009-05-20 CN CN2009201205573U patent/CN201533999U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131458A (en) * | 2011-12-05 | 2013-06-05 | 洛阳瑞泽石化工程有限公司 | Atmospheric and vacuum device |
| CN104232142A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工集团公司 | Transfer line in completely symmetrical arrangement |
| CN104232142B (en) * | 2013-06-21 | 2016-09-14 | 中国石油化工集团公司 | A kind of oil transfer line of full symmetric layout |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315042 Zhejiang city of Ningbo province high tech Zone Xinghai Road No. 36 Patentee after: Zhenhai Petrochemical Engineering Co., Ltd. Address before: Jiaochuan streets in Zhenhai District 315207 Zhejiang city of Ningbo Province Patentee before: Zhenhai Petrochemical Engineering Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |
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| CX01 | Expiry of patent term |