CN222468140U - Oil tank closed dehydration system - Google Patents
Oil tank closed dehydration system Download PDFInfo
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- CN222468140U CN222468140U CN202421179915.9U CN202421179915U CN222468140U CN 222468140 U CN222468140 U CN 222468140U CN 202421179915 U CN202421179915 U CN 202421179915U CN 222468140 U CN222468140 U CN 222468140U
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- 230000018044 dehydration Effects 0.000 title claims abstract description 42
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 42
- 239000010865 sewage Substances 0.000 claims abstract description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000005192 partition Methods 0.000 claims abstract description 20
- 239000003657 drainage water Substances 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 28
- 238000010926 purge Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 55
- 235000019198 oils Nutrition 0.000 description 53
- 238000000926 separation method Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019476 oil-water mixture Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
本实用新型涉及油品脱水技术领域，具体涉及油品罐密闭脱水系统。本实用新型所述的油品罐密闭脱水系统，包括设于地下的零位罐、以及设于零位罐上方的脱水罐和辅助罐，零位罐内部空腔被竖直设置的隔板分为污油腔和污水腔，污油腔和污水腔上部相互连通，污水腔底部连接出水管，出水管通过第一污水管连通第一污水井，第一污水管上设有污水测水仪；脱水罐底部连接脱水管，脱水管通过第一连通管连接第二污水管和第一排水管，第二污水管连通第二污水井，第一连通管上安装有排水测水仪，第一排水管连接第二排水管，第二排水管出口设于污水腔底部。本实用新型节省人工成本，节约资源，避免环境污染，降低了污水处理难度。
The utility model relates to the technical field of oil dehydration, and specifically to a closed dehydration system for oil tanks. The closed dehydration system for oil tanks described in the utility model includes a zero-level tank arranged underground, a dehydration tank and an auxiliary tank arranged above the zero-level tank, the internal cavity of the zero-level tank is divided into a dirty oil cavity and a sewage cavity by a vertically arranged partition, the dirty oil cavity and the upper part of the sewage cavity are interconnected, the bottom of the sewage cavity is connected to a water outlet pipe, the water outlet pipe is connected to a first sewage well through a first sewage pipe, and a sewage water meter is provided on the first sewage pipe; the bottom of the dehydration tank is connected to a dehydration pipe, the dehydration pipe is connected to a second sewage pipe and a first drainage pipe through a first connecting pipe, the second sewage pipe is connected to a second sewage well, a drainage water meter is installed on the first connecting pipe, the first drainage pipe is connected to the second drainage pipe, and the outlet of the second drainage pipe is arranged at the bottom of the sewage cavity. The utility model saves labor costs, saves resources, avoids environmental pollution, and reduces the difficulty of sewage treatment.
Description
Technical Field
The utility model relates to the technical field of oil dehydration, in particular to a closed dehydration system of an oil tank.
Background
Water is a main companion in oil and gas production and oil refining production, so that the operations of dewatering and draining storage tanks in petrochemical enterprises are important in storage and transportation. The use of manual dewatering often results in oil entrainment in the discharged water.
After crude oil or finished oil is demulsified by a physical or chemical method, the oil and the water are automatically layered in an oil tank due to the difference of densities. In order to remove accumulated water at the bottom of the tank, manual and manual timing dehydration is usually adopted, and in the dehydration process of the storage tank, operators are required to watch at a water cutting port. However, because the visual characteristics of dirty oil and water are not obviously different, the dehydration nodes are difficult to grasp manually, and the phenomenon of removing the water and the oil frequently occurs.
The manual dehydration is large in workload, the subsequent sewage treatment difficulty is increased due to the fact that oil is cut into water bands, and meanwhile, resource waste and environmental pollution are caused due to the fact that oil gas volatilizes.
Disclosure of utility model
The utility model aims to solve the technical problems of providing the airtight dehydration system for the oil tank, which saves labor cost, saves resources, avoids environmental pollution and reduces sewage treatment difficulty.
The utility model discloses an oil tank airtight dehydration system, which comprises a zero tank arranged underground, a dehydration tank and an auxiliary tank, wherein the dehydration tank and the auxiliary tank are arranged above the zero tank, a cavity in the zero tank is divided into a sewage cavity and a sewage cavity by a partition plate which is vertically arranged, the upper parts of the sewage cavity and the sewage cavity are mutually communicated, the bottom of the sewage cavity is connected with a water outlet pipe, the water outlet pipe is communicated with a first sewage well through a first sewage pipe, a sewage water meter is arranged on the first sewage pipe;
The first sewage pipe is provided with a sewage electromagnetic valve, the first communication pipe is provided with a drainage electromagnetic valve, and the sewage water meter is respectively and electrically connected with the sewage electromagnetic valve and the drainage water meter.
Preferably, the number of the drainage water meter and the sewage water meter is at least two. The detection results of a plurality of instruments are more accurate and have more referential property.
Preferably, the zero tank is provided with a breather valve, and the sewage cavity are both provided with liquid level meters.
Preferably, the bottom of the dirty oil cavity, the first sewage pipe, the first communication pipe and the second communication pipe are respectively provided with a first blow-down pipe, a second blow-down pipe, a third blow-down pipe, a fourth blow-down pipe and a fifth blow-down pipe.
Preferably, the first sewage pipe and the first drain pipe are respectively connected with a first steam purging pipe and a second steam purging pipe, and the first steam purging pipe and the second steam purging pipe are respectively provided with a first purging valve and a second purging valve.
Preferably, the first drain pipe is connected with the return pipe and the second communicating pipe through the third communicating pipe, and the inlet of the return pipe is arranged at the bottom of the sewage cavity.
Preferably, the bottom of the dirty oil chamber is connected with the first sewage pipe through a fourth communicating pipe.
Preferably, the second communication pipe is connected to the second sewage well through a fifth communication pipe.
Preferably, the edge of the partition plate is in sealing connection with the inner wall of the zero tank, the upper part of the partition plate is provided with a circulation port, the sewage cavity is communicated with the sewage cavity through the circulation port, the circulation port is provided with a circulation regulating valve, the upper part of the sewage cavity is provided with a water meter, and a detection probe of the water meter extends below the lowest part of the circulation port.
As another embodiment of the utility model, the height of the partition plate is smaller than the height in the zero tank, the upper edge of the partition plate is not connected with the upper inner wall of the zero tank, and the sewage cavity are communicated with each other through a gap between the upper edge of the partition plate and the inner wall of the zero tank.
The pipeline can be provided with a valve according to the control requirement, and the on-off of materials in the corresponding pipeline and the flow of the materials are conveniently controlled through the opening and closing of the valve.
When the utility model is used, after the dehydration tank utilizes the gravity separation of oil and water by controlling heating, the water at the lower layer is discharged to the second sewage well through the dehydration pipe and the second sewage pipe, during the drainage period, the drainage water meter arranged on the first communication pipe judges that the water is discharged to the oil-water layering position through detecting the change of the viscosity, the density and other comprehensive parameters of the medium, then the drainage electromagnetic valve is controlled to be opened, most of the oil (mixed with a small amount of water) at the upper layer of the dehydration tank enters the sewage cavity of the zero tank, and after the gravity separation of secondary oil and water is carried out at the bottom of the sewage cavity, the secondary dehydrated oil in the zero tank can be recovered or the oil-water separation is carried out again.
Compared with the prior art, the utility model has the beneficial effects that:
1. The utility model has reasonable and compact structure and convenient operation, and can more accurately judge the oil-water boundary position through the change of the comprehensive parameters of the detection medium of the sewage detector and the drainage detector, thereby reducing the treatment difficulty of the oily sewage and saving the labor cost;
2. The utility model improves the recovery rate of oil products, reduces the pollution to the environment, and is completely suitable for the dehydration of heavy oil storage tanks with large water content.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the zero tank configuration of embodiment 2 of the present utility model;
FIG. 3 is a schematic diagram of the zero tank configuration of embodiment 3 of the present utility model;
In the drawing, 1, a zero tank, 2, a dewatering tank, 3, an auxiliary tank, 4, a partition board, 5, a dirty oil cavity, 6, a dirty water cavity, 7, a water outlet pipe, 8, a first dirty water pipe, 9, a first dirty water well, 10, a dirty water meter, 11, a dewatering pipe, 12, a first communication pipe, 13, a second dirty water pipe, 14, a first drain pipe, 15, a second dirty water well, 16, a drainage meter, 17, a second drain pipe, 18, a liquid inlet pipe, 19, a second communication pipe, 20, an oil inlet pipe, 21, a pump, 22, a drainage electromagnetic valve, 23, a dirty water electromagnetic valve, 24, a breather valve, 25, a liquid level meter, 26, a first blow-down pipe, 27, a second blow-down pipe, 28, a third blow-down pipe, 29, a fourth blow-down pipe, 30, a fifth blow-down pipe, 31, a first steam purge pipe, 32, a second steam purge pipe, 33, a first communication valve, 34, a second valve, 35, a third communication pipe, 36, a return pipe, 37, a fourth communication pipe, 38, a fifth communication pipe, 39, and a regulating water purge meter.
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings.
It should be noted that relational terms such as first and second are used solely to distinguish one entity or action from another entity or action to facilitate expression and not to represent a sequential relationship.
Example 1
As shown in figure 1, the oil tank airtight dehydration system comprises a zero tank 1 arranged underground, a dehydration tank 2 and an auxiliary tank 3 arranged above the zero tank 1, wherein the cavity in the zero tank 1 is divided into a dirty oil cavity 5 and a dirty water cavity 6 by a partition plate 4 arranged vertically, the dirty oil cavity 5 and the upper part of the dirty water cavity 6 are communicated with each other, the bottom of the dirty water cavity 6 is connected with a water outlet pipe 7, the water outlet pipe 7 is communicated with a first dirty water well 9 through a first dirty water pipe 8, a sewage water meter 10 is arranged on the first dirty water pipe 8, the bottom of the dehydration tank 2 is connected with a dehydration pipe 11, the dehydration pipe 11 is connected with a second dirty water pipe 13 and a first drain pipe 14 through a first communicating pipe 12, the second dirty water pipe 13 is communicated with a second dirty water well 15, a drainage water meter 16 is arranged on the first communicating pipe 12, the first drain pipe 14 is connected with a second drain pipe 17, the outlet of the second drain pipe 17 is arranged at the bottom of the dirty water cavity 6, the bottom of the auxiliary tank 3 is connected with a liquid inlet pipe 18, the liquid inlet pipe 18 is connected with an oil inlet pipe 20 through a second communicating pipe 19, the inlet of the oil inlet pipe 20 is arranged at the bottom of the dirty water cavity 5, and a pump 21 is arranged on the second communicating pipe 19;
The first sewage pipe 8 is provided with a sewage electromagnetic valve 23, the first communication pipe 12 is provided with a drainage electromagnetic valve 22, and the sewage meter 10 is respectively and electrically connected with the sewage electromagnetic valve 23, the drainage meter 16 and the drainage electromagnetic valve 22.
The drainage meter 16 and the sewage meter 10 are two.
The zero tank 1 is provided with a breather valve 24, and the dirty oil cavity 5 and the dirty water cavity 6 are provided with a liquid level meter 25.
The bottom of the sewage chamber 5, the bottom of the sewage chamber 6, the first sewage pipe 8, the first communication pipe 12 and the second communication pipe 19 are respectively provided with a first blow-down pipe 26, a second blow-down pipe 27, a third blow-down pipe 28, a fourth blow-down pipe 29 and a fifth blow-down pipe 30.
The first sewage pipe 8 and the first drain pipe 14 are respectively connected with a first steam purge pipe 31 and a second steam purge pipe 32, and a first purge valve 33 and a second purge valve 34 are respectively arranged on the first steam purge pipe 31 and the second steam purge pipe 32.
The first drain pipe 14 is connected with the return pipe 36 and the second communicating pipe 19 through the third communicating pipe 35, and an inlet of the return pipe 36 is arranged at the bottom of the sewage cavity 6.
The bottom of the sewage chamber 5 is connected to the first sewage pipe 8 through a fourth communicating pipe 37.
The second communication pipe 19 is connected to the second bilge well 15 through the fifth communication pipe 38.
The working process is that after the dehydration tank 2 utilizes the gravity separation of oil and water by controlling heating, the water at the lower layer is discharged to the second sewage well 15 through the dehydration pipe 11 and the second sewage pipe 13, and during the discharging period, when two drainage water meters 16 arranged on the first communication pipe 12 all judge that the water is discharged to the oil-water layering position through detecting the change of the viscosity and the density of a medium, the drainage electromagnetic valve 22 is controlled to be opened, most of the oil at the upper layer of the dehydration tank 2 mixes with a small amount of water to enter the sewage cavity of the zero tank 1, and the gravity separation of secondary oil and water is carried out in the sewage cavity 6, and the following working conditions are provided:
1) The liquid entering the bottom of the sewage cavity 6 from the second drain pipe 17 is separated by oil and water with different densities, the oil with low density enters the upper layer, the water with high density enters the lower layer, along with the rising of the liquid level in the sewage cavity 6, when the liquid level is higher than the communication position between the sewage cavity 5 and the upper part of the sewage cavity 6, the oil on the upper layer flows into the sewage cavity 5, and along with the liquid feeding of the second drain pipe 17, the oil is continuously discharged into the sewage cavity 5;
The oil product condition in the sewage cavity 5 is checked through the first blow-down pipe 26, if the oil discharged from the bottom of the sewage cavity 5 is oil, the oil product entering the sewage cavity 5 is proved to have higher purity and can be directly recovered, the engine pump 21 is started to enter the auxiliary tank 3 through the oil inlet pipe 20, the oil product enters the auxiliary tank 3 through the second communication pipe 19 and the liquid inlet pipe 18, if the water discharged from the bottom of the sewage cavity 5 is water, the oil product entering the sewage cavity 5 is proved to be doped with more water and still needs to be further separated, the engine pump 21 can be started, the water at the bottom of the sewage cavity 5 enters the second sewage well 15 through the oil inlet pipe 20, the second communication pipe 19 and the fifth communication pipe 38, the water-oil separation degree can be judged through the fifth blow-down pipe 30 during the period, and if the water discharged from the bottom of the sewage cavity 5 is water, the fourth communication pipe 37 and the first sewage pipe 8 can be discharged into the first sewage well 9, and the viscosity and the density change of the water can be detected through the two sewage measuring instruments 10 to judge the dehydration degree, so as to control the on-off of the sewage electromagnetic valve 23.
2) The liquid in the sewage cavity 6 is dehydrated independently, the sewage electromagnetic valve 23 is controlled to be opened for dehydration, the lower water is discharged into the first sewage well 9 through the water outlet pipe 7 and the first sewage pipe 8, the viscosity and the density parameter change of the medium are detected by the sewage measuring instrument 10 during the drainage, the water is judged to be drained to the oil-water layering position, the condition of the oil product at the bottom of the sewage cavity 6 is checked through the second blow-down pipe 27, if more water is still contained, the dehydration can be continued, and if the purity of the oil product is higher, the recovery can be directly carried out;
The sewage chamber 6 is dehydrated, and the pump 21 can be started to enter the auxiliary tank 3 through the return pipe 36, the second communicating pipe 19 and the liquid inlet pipe 18 in sequence.
3) If the drainage water meter 16 is abnormal, whether the dewatering tank 2 is filled with water or not can be judged through the fourth emptying pipe 29 emptying inspection, the probe is cleaned through the steam purging of the second steam purging pipe 32, and the probe can be periodically purged through the steam purging of the second purging valve 34 for a period of time;
If the sewage meter 10 is abnormal, the third blow-down pipe 28 can be used for emptying to check the condition, the first steam blowing pipe 31 can be used for blowing steam to clean the probe, and the first blowing valve 33 can be set for a time to periodically blow the steam of the probe.
Example 2
On the basis of embodiment 1, as shown in fig. 2, the edge of the partition board 4 is in sealing connection with the inner wall of the zero tank 1, the upper part of the partition board 4 is provided with a circulation port, the dirty oil cavity 5 and the dirty water cavity 6 are communicated through the circulation port, the circulation port is provided with a circulation regulating valve 39, the upper part of the dirty water cavity 6 is provided with an upper water meter 40, and a detection probe of the upper water meter 40 extends to the position below the lowest position of the circulation port.
When the oil-water mixture in the zero tank 1 rises along with the liquid level and reaches the circulation port, the liquid level meter 25 detects the liquid level, the circulation regulating valve 39 is opened, the upper layer oil enters the dirty oil cavity 5 from the circulation port, the upper layer oil is continuously discharged to the dirty oil cavity 5 along with the continuous liquid feeding of the second drain pipe 17, and when the upper water meter 40 detects that the signal changes, the oil-water separation interface is prompted to reach the circulation port, and the circulation regulating valve 39 is closed.
Example 3
On the basis of the embodiment 1, as shown in fig. 3, the height of the partition plate 4 is smaller than the height in the zero tank 1, the upper edge of the partition plate 4 is not connected with the upper inner wall of the zero tank 1, and the dirty oil cavity 5 and the dirty water cavity 6 are communicated with the gap between the upper edge of the partition plate 4 and the inner wall of the zero tank 1.
When the oil-water mixture in the zero tank 1 reaches the circulation port along with the rise of the liquid level, the upper layer oil in the sewage cavity 6 can directly overflow the baffle plate 4 to enter the sewage cavity 5 along with the liquid delivery of the second drain pipe 17.
Claims (10)
1. The oil tank airtight dehydration system is characterized by comprising a zero tank (1) arranged underground, a dehydration tank (2) and an auxiliary tank (3) arranged above the zero tank (1), wherein an inner cavity of the zero tank (1) is divided into a dirty oil cavity (5) and a dirty water cavity (6) by a vertically arranged partition plate (4), the dirty oil cavity (5) and the upper part of the dirty water cavity (6) are mutually communicated, the bottom of the dirty water cavity (6) is connected with a water outlet pipe (7), the water outlet pipe (7) is communicated with a first dirty water well (9) through a first dirty water pipe (8), the first dirty water pipe (8) is provided with a sewage water meter (10), the bottom of the dehydration tank (2) is connected with a dehydration pipe (11), the second dirty water pipe (13) is connected with a first drain pipe (14) through a first connecting pipe (12), the second dirty water pipe (13) is communicated with a second dirty water well (15), the first drain pipe (14) is connected with a second drain pipe (17), the bottom of the second drain pipe (17) is connected with an outlet of the dirty water cavity (6) through a first dirty water pipe (8), the bottom of the auxiliary tank (20) is connected with an inlet pipe (18) through a first connecting pipe (18), the second communicating pipe (19) is provided with an organic pump (21);
The first sewage pipe (8) is provided with a sewage electromagnetic valve (23), the first communication pipe (12) is provided with a drainage electromagnetic valve (22), and the sewage meter (10) is respectively and electrically connected with the sewage electromagnetic valve (23), the drainage meter (16) and the drainage electromagnetic valve (22).
2. The sealed dewatering system of claim 1, wherein there are at least two drainage water meters (16) and sewage water meters (10).
3. The airtight dehydration system of oil tank according to claim 1, wherein the zero tank (1) is provided with a breather valve (24), and the dirty oil cavity (5) and the dirty water cavity (6) are provided with a liquid level meter (25).
4. The airtight dehydration system of an oil tank according to claim 1, wherein a first blow-down pipe (26), a second blow-down pipe (27), a third blow-down pipe (28), a fourth blow-down pipe (29) and a fifth blow-down pipe (30) are respectively provided at the bottom of the dirty oil chamber (5), the bottom of the sewage chamber (6), the first sewage pipe (8), the first communication pipe (12) and the second communication pipe (19).
5. The airtight dehydration system of an oil tank according to claim 1, wherein the first sewage pipe (8) and the first drain pipe (14) are respectively connected with a first steam purge pipe (31) and a second steam purge pipe (32), and a first purge valve (33) and a second purge valve (34) are respectively arranged on the first steam purge pipe (31) and the second steam purge pipe (32).
6. The closed dewatering system of oil tank according to claim 1, characterized in that the first drain pipe (14) is connected with the return pipe (36) and the second communicating pipe (19) through the third communicating pipe (35), and the inlet of the return pipe (36) is arranged at the bottom of the sewage cavity (6).
7. The closed dewatering system for oil tank according to claim 1, wherein the bottom of the dirty oil chamber (5) is connected to the first dirty water pipe (8) via a fourth communicating pipe (37).
8. The tight dewatering system for oil tanks according to claim 1, characterized in that the second communication pipe (19) is connected to the second sewer manhole (15) through a fifth communication pipe (38).
9. The airtight dehydration system of oil tank according to claim 1, characterized in that the edge of the partition plate (4) is in sealing connection with the inner wall of the zero tank (1), the upper part of the partition plate (4) is provided with a circulation port, the dirty oil cavity (5) and the sewage cavity (6) are communicated through the circulation port, the circulation port is provided with a circulation regulating valve (39), the upper part of the sewage cavity (6) is provided with an upper water meter (40), and the detection probe of the upper water meter (40) extends below the lowest part of the circulation port.
10. The airtight dehydration system of oil tank according to claim 1, wherein the height of the partition plate (4) is smaller than the height in the zero tank (1), the upper edge of the partition plate (4) is not connected with the upper inner wall of the zero tank (1), and the dirty oil cavity (5) and the sewage cavity (6) are communicated with the gap between the upper edge of the partition plate (4) and the inner wall of the zero tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421179915.9U CN222468140U (en) | 2024-05-28 | 2024-05-28 | Oil tank closed dehydration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421179915.9U CN222468140U (en) | 2024-05-28 | 2024-05-28 | Oil tank closed dehydration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222468140U true CN222468140U (en) | 2025-02-14 |
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ID=94490280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421179915.9U Active CN222468140U (en) | 2024-05-28 | 2024-05-28 | Oil tank closed dehydration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222468140U (en) |
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2024
- 2024-05-28 CN CN202421179915.9U patent/CN222468140U/en active Active
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