CN201437602U - Tower top water filling device for atmospheric and vacuum distillation unit of oil refinery - Google Patents
Tower top water filling device for atmospheric and vacuum distillation unit of oil refinery Download PDFInfo
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- CN201437602U CN201437602U CN200920091822XU CN200920091822U CN201437602U CN 201437602 U CN201437602 U CN 201437602U CN 200920091822X U CN200920091822X U CN 200920091822XU CN 200920091822 U CN200920091822 U CN 200920091822U CN 201437602 U CN201437602 U CN 201437602U
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Abstract
The utility model discloses a tower top water filling device for the atmospheric and vacuum distillation unit of an oil refinery, which solves the problem that the pressure robbing situation occurs in the existing water filling device. The tower top water filling device comprises a water supply pump (2), a water supply pipe (16), at least two water supply branch pipes (9), a pressure stabilizing tank (6) and a pressure control system used to control the pressure stabilizing tank (6). A flow regulating valve (10) and a flowmeter (11) are sequentially arranged on each water supply branch pipe (9) along the water flowing direction. The lower part of the pressure stabilizing tank (6) is a water storage zone and the upper part of the pressure stabilizing tank (6) is a compressed air zone. The water outlet (161) of the water supply pipe (16) is communicated with the water storage zone or the compressed air zone of the pressure stabilizing tank (6). The water inlet (91) of each water supply branch pipe (9) is communicated with the water storage zone of the pressure stabilizing tank (6). The water filling device can be used to fill water from the top of the towers in the atmospheric and vacuum distillation unit of the oil refinery.
Description
Technical field
The utility model relates to a kind of refinery decompressioning device cat head water filling device of PETROLEUM PROCESSING industry.
Background technology
The water filling of atmospheric and vacuum distillation unit cat head is the etch-proof important means of oil refinery.Existing refinery decompressioning device cat head water filling device adopts direct injection form, with a water-delivery pump (centrifugal pump) by water-supply-pipe and many delivery pipe branch cat head water fillings of each tower in atmospheric and vacuum distillation unit respectively.The quantity of delivery pipe branch is at least 2, equates with the quantity of tower in the atmospheric and vacuum distillation unit; The flow direction of delivery pipe branch upper edge water is provided with flow control valve and flow meter successively.The shortcoming that existing water filling device exists is, when flow from certain bar delivery pipe branch to a certain tower water filling that regulate by, because the tower top pressure of each tower is not necessarily identical, the flow of water and will change to the flow of other tower water filling in other delivery pipe branch promptly causes the usually said pressure phenomenon of robbing.Therefore water injection rate is difficult to guarantee accurately, also is difficult for regulating.Water injection rate is forbidden, can not be reached requirement, can make atmospheric and vacuum distillation unit and following process device produce etching problem, also can cause product quality defective sometimes, or influences the device operation.Particularly in the stage that the crude oil sulfur content increases at present, quality descends, this problem can be more outstanding.
Summary of the invention
The purpose of this utility model provides a kind of refinery decompressioning device cat head water filling device, has the problem of pressing phenomenon of robbing to solve existing water filling device.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of refinery decompressioning device cat head water filling device, comprise water-delivery pump, water-supply-pipe and at least 2 delivery pipe branches, the flow direction of delivery pipe branch upper edge water is provided with flow control valve and flow meter successively, it is characterized in that: described refinery decompressioning device cat head water filling device is provided with vacuum tank and is used to control the control pressurer system of vacuum tank pressure, the vacuum tank bottom is the storage area, top is the compressed air district, the delivery port of described water-supply-pipe is connected with the storage area of vacuum tank or compressed air district, and the water inlet of each bar delivery pipe branch all is connected with the storage area of vacuum tank.
Adopt the utility model, have following beneficial effect: in the operating process, water-delivery pump will be intake in water-supply-pipe is sent into vacuum tank, and water comes together in the storage area.Control pressurer system can automatically be controlled at vacuum tank pressure a constant set value that is higher than the atmospheric and vacuum distillation unit tower top pressure all the time.Under the effect of vacuum tank pressure, the water in the storage area flows out in vacuum tank through each bar delivery pipe branch, injects the cat head of each tower of atmospheric and vacuum distillation unit respectively; Flow control valve and flow meter can be regulated control respectively and show the flow of water in every delivery pipe branch.When flow from certain bar delivery pipe branch to a certain tower water filling that regulate by, because the compressed air in the vacuum tank compressed air district can play cushioning effect, the flow of water and just can not be affected, change in other delivery pipe branch to the flow of other tower water filling.Thereby, can eliminate and rob the pressure phenomenon, and the variety of issue that causes thus.When the cat head water filling of each tower in atmospheric and vacuum distillation unit, the utility model can centralized operation, and smooth operation, guarantee injection flow accurately, meet the demands; Water injection rate can be easily, regulate flexibly and easily.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Description of drawings
Fig. 1 is the schematic diagram of the utility model refinery decompressioning device cat head water filling device.
Fig. 2 is the A-A sectional view among Fig. 1.
Among Fig. 1, Fig. 2, same reference numerals is represented identical technical characterictic.
The specific embodiment
Referring to Fig. 1, Fig. 2, refinery decompressioning device's cat head water filling device of the present utility model (abbreviating water filling device as) comprises water-delivery pump 2,16, at least 2 delivery pipe branches 9 of water-supply-pipe, and vacuum tank 6 and the control pressurer system that is used to control vacuum tank 6 pressure.The flow direction of delivery pipe branch 9 upper edge water is provided with flow control valve 10 and flow meter 11 successively.Vacuum tank 6 bottoms are storage area 19, and top is compressed air district 20.The delivery port 161 of described water-supply-pipe 16 is connected with the storage area 19 of vacuum tank 6 or compressed air district 20, and the water inlet 91 of each bar delivery pipe branch 9 all is connected with the storage area 19 of vacuum tank 6.The water inlet of water-supply-pipe 16 links to each other with the outlet of water-delivery pump 2.Vacuum tank 6 can be horizontal tank (as shown in Figure 1 and Figure 2), can also be the jar (figure slightly) of vertical tank or other shape.The delivery port 161 of water-supply-pipe 16 preferably is connected on the bottom tank skin of vacuum tank 6 (as shown in Figure 1 and Figure 2), also can stretch to vacuum tank 6 interior a section, is connected with storage area 19.The delivery port 161 of water-supply-pipe 16 also can be connected on the tank skin of vacuum tank 6 other positions, and (figure slightly) is connected with storage area 19 or compressed air district 20.The water inlet 91 of each bar delivery pipe branch 9 is connected on the sidepiece tank skin of vacuum tank 6 (as shown in Figure 1 and Figure 2) usually, also can stretch to vacuum tank 6 interior a section, is connected with storage area 19.
The utility model is used to control the control pressurer system of vacuum tank 6 pressure, is made up of direct-operated regulator 4, pressure sensor 5 and the pressure control line 18 that is connected both.Direct-operated regulator 4 is located on the water-supply-pipe 16.Pressure sensor 5 is located on the vacuum tank 6, can be located at the optional position of vacuum tank 6 tank skins; Pressure sensor 5 shown in Figure 1 is located on the top tank skin of vacuum tank 6.Pressure sensor 5 can also be located on the pipeline section of water-supply-pipe 16 of direct-operated regulator 4 outlet, and is connected (figure summary) with pressure control line equally between the direct-operated regulator 4.Pressure sensor 5 can detect the pressure (water in the storage area 19 or pressure of compressed air district 20 compressed airs) of vacuum tank 6, and pressure signal is passed to direct-operated regulator 4 through pressure control line 18; Direct-operated regulator 4 can be regulated the flow of the water in water-supply-pipe 16 enters vacuum tank 6 automatically, makes the pressure of vacuum tank 6 remain on the constant set value automatically.The pressure of vacuum tank 6 is higher than the atmospheric and vacuum distillation unit tower top pressure all the time, will be higher than the tower top pressure of the tower that tower top pressure is the highest in the atmospheric and vacuum distillation unit specifically, generally exceeds more than the 0.2MPa.
For example, the atmospheric and vacuum distillation unit of certain oil refinery comprises 6 following towers, adopts the cat head water filling of the utility model water filling device to each tower, and the tower top pressure of injection flow and each tower is as follows:
1. primary distillation tower: 5.5 tons/hour of cat head injection flows, tower top pressure 1.1～1.2MPa;
2. atmospheric tower: 3.5 tons/hour of cat head injection flows, tower top pressure 1.1～1.2MPa;
3. vacuum tower: 2 tons/hour of cat head injection flows, tower top pressure 1.1～1.2MPa;
4. isomerization material tower: 2 tons/hour of cat head injection flows, tower top pressure 1.1～1.2MPa;
5. debutanizing tower: 2 tons/hour of cat head injection flows, tower top pressure 1.5MPa;
6. visbreaking tower: 3.8 tons/hour of cat head injection flows, tower top pressure 1.2MPa.
According to above-mentioned condition, the pressure of the utility model water filling device vacuum tank 6 is set at 1.8MPa.Water-delivery pump 2 will intake 1 in water-supply-pipe 16 is sent into vacuum tank 6, and the total flow of water inlet 1 is the summation to above each tower cat head injection flow.
Water-delivery pump 2 can be provided with 2, and work, one are standby, as shown in Figure 1.Be respectively equipped with transfer valve 3 on the pipeline section of 2 water-supply-pipes 16 between the outlet of 2 water-delivery pumps 2 and direct-operated regulator 4 imports.Certain water-delivery pump 2 work or stop work when standby, the transfer valve 3 on water-supply-pipe 16 pipeline sections between its outlet and direct-operated regulator 4 imports correspondingly opens or closes.Water-delivery pump 2 also can only be provided with 1.
Referring to Fig. 1, Fig. 2, water filling device of the present utility model, every delivery pipe branch 9 all can be provided with one way valve 13 on the pipeline section of flow meter 11 outlets.During the water filling device normal running, one way valve 13 is opened, and makes the water in vacuum tank 6 storage areas 19 flow to the atmospheric and vacuum distillation unit cat head through delivery pipe branch 9.Pressure oscillation appears in atmospheric and vacuum distillation unit, when tower top pressure is higher than the pressure of vacuum tank 6, one way valve 13 can be closed automatically, prevents that the atmospheric and vacuum distillation unit overhead stream is back to vacuum tank 6 through delivery pipe branch 9.During the water filling device shutdown maintenance, one way valve 13 is also closed automatically.
All can be provided with first stop valve 12 and shunt valve 14 on every delivery pipe branch 9, shunt valve 14 is provided with second stop valve 15.Referring to Fig. 1, Fig. 2, first stop valve 12 is located on the pipeline section of the delivery pipe branch 9 between flow meter 11 outlets and one way valve 13 imports.Referring to Fig. 1, an end of shunt valve 14 is connected on the pipeline section of delivery pipe branch 9 of flow control valve 10 imports, and the other end is connected on the pipeline section of the delivery pipe branch 9 between 12 outlets of first stop valve and one way valve 13 imports.During the water filling device normal running, first stop valve 12 is opened, and second stop valve 15 is closed.Flow meter 11 needs repairing or when changing, opens second stop valve 15, closes the flow control valve 10 and first stop valve 12 simultaneously; Current can continue to the water filling of atmospheric and vacuum distillation unit cat head water filling device through shunt valve 14.During the water filling device shutdown maintenance, all valve Close Alls.
The utility model water filling device can be provided with return duct 17, and return duct 17 is provided with safety valve 7.The import 171 of return duct 17 is connected with the storage area 19 of vacuum tank 6 or compressed air district 20.When the pressure of vacuum tank 6 was higher than setting value, safety valve 7 was opened pressure release automatically, gave off a part of water in the storage area 19 or a part of compressed air in the compressed air district 20.
The used water-delivery pump 2 of the utility model, flow meter 11, pressure sensor 5, various valves etc. all can adopt existing.Wherein water-delivery pump 2 generally adopts centrifugal pumps, and transfer valve 3 can adopt ball valve, flow control valve, and direct-operated regulator 4 is the direct-operated regulator that can regulate the flow of water.The reading of flow meter 11 can show on the spot, also can teletransmission to DCS system (Distributed Control System) centralized displaying of operating room.Flow control valve 10 can adopt the manual modulation valve manual operation, also can adopt electric control valve to operate by the DCS system remote at operating room.Transfer valve 3, first stop valve 12 and the 15 general employing manual operations of second stop valve.
The utility model water filling device is in when operation, water-delivery pump 21 (fresh water or the recirculated water) (storage area 19 or compressed air district 20) in water-supply-pipe 16 is sent into vacuum tank 6 of will intaking.Water comes together in storage area 19, and the air in the vacuum tank 6 is then gradually reduced and comes together in the compressed air district 20.When the pressure of vacuum tank 6 reaches setting value, the pressure of water and the pressure of compressed air district 20 compressed airs are in equilibrium state in the storage area 19, and the volume in compressed air district 20 (being the volume of compressed air district 20 compressed airs) is generally 1/2nd to 1/3rd of vacuum tank 6 volumes; Flow control valve 10, first stop valve 12 and one way valve 13 are opened, and the water in the storage area 19 begins to flow out in vacuum tank 6 through each bar delivery pipe branch 9 constantly, injects the cat head of each tower of atmospheric and vacuum distillation unit respectively.Among Fig. 1 and Fig. 2, the flow direction of water is shown with arrow.
Claims (7)
1. refinery decompressioning device's cat head water filling device, comprise water-delivery pump (2), water-supply-pipe (16) and at least 2 delivery pipe branches (9), the flow direction of delivery pipe branch (9) upper edge water is provided with flow control valve (10) and flow meter (11) successively, it is characterized in that: described refinery decompressioning device cat head water filling device is provided with vacuum tank (6) and is used to control the control pressurer system of vacuum tank (6) pressure, vacuum tank (6) bottom is storage area (19), top is compressed air district (20), the delivery port (161) of described water-supply-pipe (16) is connected with the storage area (19) of vacuum tank (6) or compressed air district (20), and the water inlet (91) of each bar delivery pipe branch (9) all is connected with the storage area (19) of vacuum tank (6).
2. refinery decompressioning device according to claim 1 cat head water filling device is characterized in that: delivery pipe branch (9) is provided with 2～10.
3. refinery decompressioning device according to claim 1 cat head water filling device, it is characterized in that: the described control pressurer system that is used to control vacuum tank (6) pressure, form by direct-operated regulator (4), pressure sensor (5) and the pressure control line that is connected both (18), direct-operated regulator (4) is located on the water-supply-pipe (16), pressure sensor (5) is located on the vacuum tank (6), or is located on the pipeline section of water-supply-pipe (16) of direct-operated regulator (4) outlet.
4. refinery decompressioning device according to claim 1 cat head water filling device, it is characterized in that: described water-delivery pump (2) is provided with 2, is respectively equipped with transfer valve (3) on the pipeline section of 2 water-supply-pipes (16) between the outlet of 2 water-delivery pumps (2) and direct-operated regulator (4) import.
5. refinery decompressioning device according to claim 1 cat head water filling device is characterized in that: every delivery pipe branch (9) is equipped with one way valve (13) on the pipeline section of flow meter (11) outlet.
6. refinery decompressioning device according to claim 5 cat head water filling device, it is characterized in that: be equipped with first stop valve (12) and shunt valve (14) on every delivery pipe branch (9), shunt valve (14) is provided with second stop valve (15), first stop valve (12) is located on the pipeline section of the delivery pipe branch (9) between flow meter (11) outlet and one way valve (13) import, one end of shunt valve (14) is connected on the pipeline section of delivery pipe branch (9) of flow control valve (10) import, and the other end is connected on the pipeline section of the delivery pipe branch (9) between first stop valve (12) outlet and one way valve (13) import.
7. refinery decompressioning device according to claim 1 cat head water filling device, it is characterized in that: it is provided with return duct (17), return duct (17) is provided with safety valve (7), and the import (171) of return duct (17) is connected with the storage area (19) of vacuum tank (6) or compressed air district (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920091822XU CN201437602U (en) | 2009-07-22 | 2009-07-22 | Tower top water filling device for atmospheric and vacuum distillation unit of oil refinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920091822XU CN201437602U (en) | 2009-07-22 | 2009-07-22 | Tower top water filling device for atmospheric and vacuum distillation unit of oil refinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437602U true CN201437602U (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920091822XU Expired - Fee Related CN201437602U (en) | 2009-07-22 | 2009-07-22 | Tower top water filling device for atmospheric and vacuum distillation unit of oil refinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201437602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929088A (en) * | 2015-12-29 | 2017-07-07 | 中国石油天然气集团公司 | Fractionator overhead petroleum system water filling device and method |
| CN111957059A (en) * | 2020-08-20 | 2020-11-20 | 北方华锦化学工业股份有限公司 | Method for removing crystallized ammonium salt by injecting water into heat exchanger at top of primary distillation tower |
-
2009
- 2009-07-22 CN CN200920091822XU patent/CN201437602U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929088A (en) * | 2015-12-29 | 2017-07-07 | 中国石油天然气集团公司 | Fractionator overhead petroleum system water filling device and method |
| CN106929088B (en) * | 2015-12-29 | 2018-11-16 | 中国石油天然气集团公司 | Fractionator overhead petroleum system water filling device and method |
| CN111957059A (en) * | 2020-08-20 | 2020-11-20 | 北方华锦化学工业股份有限公司 | Method for removing crystallized ammonium salt by injecting water into heat exchanger at top of primary distillation tower |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Patentee after: China Petrochemical Group Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Luoyang Petrochemical Engineering Co., China Petrochemical Group Patentee before: China Petrochemical Group Corp. |
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| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SINOPEC LUOYANG PETROCHEMICAL ENGINEERING CORPORATION Effective date: 20130326 Owner name: SINOPEC LUOYANG PETROCHEMICAL ENGINEERING CORPORAT Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20130326 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 471003 LUOYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130326 Address after: 471003 Zhongzhou West Road, Henan, China, No. 27, No. Patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Luoyang Petrochemical Engineering Corporation /SINOPEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20160722 |