CN213790090U - Efficient, environment-friendly and energy-saving oil-water separation system - Google Patents
Efficient, environment-friendly and energy-saving oil-water separation system Download PDFInfo
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- CN213790090U CN213790090U CN202022193926.0U CN202022193926U CN213790090U CN 213790090 U CN213790090 U CN 213790090U CN 202022193926 U CN202022193926 U CN 202022193926U CN 213790090 U CN213790090 U CN 213790090U
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Abstract
The utility model relates to an efficient, environment-friendly and energy-saving oil-water separation system, which comprises an oil-water separation tank, a water inlet pipeline, a water drainage pipeline, an oil drainage pipeline, a gas emission pipeline and a nitrogen pipeline; the utility model is used for further carrying out oil-water separation on the oil-containing separated water; the system has simple and reasonable composition, simple operation and good oil-water separation effect, realizes the recovery and separation of residual oil in water, and can effectively reduce the volatilization of oil substances; in addition, the pressure of the upstream medium is utilized to keep the separated oil and water at a certain pressure, and a power conveying device is not required to be arranged independently when the oil and water are conveyed for a long distance.
Description
Technical Field
The utility model relates to an oil-water separation technical field especially relates to a high-efficient environmental protection and energy saving's oil-water separation system.
Background
In the crude benzene refining process, hydrogenated oil obtained by hydrogenating crude benzene as a raw material contains a small amount of water in addition to hydrocarbons such as benzene, toluene, xylene, etc., and the water in the hydrogenated oil needs to be removed before the hydrogenated oil is sent to the next step for distillation. In the existing production process, a high-pressure separator is mostly adopted, the hydrocarbon substances in the hydrogenated oil and process separation water are subjected to oil-water separation in a static separation mode, and the separated oil and water are decompressed by an adjusting valve by utilizing the operating pressure (about 2.5MPa) of the high-pressure separator and then are directly delivered. Because the separated water contains impurities such as hydrogen sulfide, ammonia and the like, production enterprises generally send the separated water to an ammonia distillation system for ammonia distillation treatment and finally to a sewage treatment system.
In the actual production process, the separated water separated by the high-pressure separator still contains a small amount of oil products such as hydrocarbons and the like, and the oil products are taken away along with the separated water, so that on one hand, hydrocarbon substances are lost, the product yield is reduced, and the enterprise benefit loss is caused; on the other hand, the production load and the operation difficulty of a subsequent water treatment system are increased; moreover, most of hydrocarbons such as benzene and toluene are highly and moderately toxic substances, which easily causes environmental pollution and adversely affects physical and psychological health of operators.
Therefore, a simple, economic, efficient and environment-friendly process method is urgently needed, and the separated water discharged from the high-pressure separator is further subjected to deoiling treatment on the premise of low investment, small occupied area and simple operation, so that oil products in the separated water are recovered as much as possible.
Disclosure of Invention
The utility model provides a high-efficiency, environment-friendly and energy-saving oil-water separation system, which is used for further performing oil-water separation on oil-containing separated water; the system has simple and reasonable composition, simple operation and good oil-water separation effect, realizes the recovery and separation of residual oil in water, and can effectively reduce the volatilization of oil substances; in addition, the pressure of the upstream medium is utilized to keep the separated oil and water at a certain pressure, and a power conveying device is not required to be arranged independently when the oil and water are conveyed for a long distance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an efficient, environment-friendly and energy-saving oil-water separation system comprises an oil-water separation tank, a water inlet pipeline, a water drainage pipeline, an oil drainage pipeline, a gas release pipeline and a nitrogen pipeline; the oil-water separation tank is a closed tank body, the top of the oil-water separation tank is provided with a diffused gas outlet which is connected with a diffused gas pipeline, and the diffused gas pipeline is connected with a nitrogen pipeline; the upper part of the oil-water separation tank is provided with a partition plate which divides the upper space of the oil-water separation tank into a static separation zone and an oil-water disturbance zone, and the cross section area of the static separation zone is larger than that of the oil-water disturbance zone; a space is reserved between the upper edge of the partition plate and the top of the oil-water separation tank, and the lower edge of the partition plate is flush with an oil-water interface in the oil-water separation tank; a water inlet is arranged on the side wall of the oil-water separation tank corresponding to one side of the oil-water disturbance area and connected with a water inlet pipeline, and an oil outlet is arranged on the side wall of the oil-water separation tank corresponding to one side of the static separation area and connected with an oil outlet pipeline; the lower part of the oil-water separation tank is provided with a storage tank heater, and the bottom of the oil-water separation tank is provided with a water outlet connected with a water drainage pipeline.
The position of the water inlet corresponds to the liquid phase area in the oil-water separation tank and is higher than the lower edge of the partition plate.
And a liquid level meter is arranged on the side wall of the oil-water separation tank on one side of the static separation zone, a drainage regulating valve is arranged on the drainage pipeline, and the drainage regulating valve and the liquid level meter are controlled in an interlocking manner through a control system.
The oil discharge port is higher than a liquid phase region in the oil-water separation tank, and the part of the oil discharge pipeline in the oil-water separation tank is bent downwards and inserted below the liquid level of the static separation region; a sight glass and a valve are arranged on an oil discharge pipeline outside the oil-water separation tank.
The oil-water separator is characterized in that a diffused gas regulating valve is arranged on the diffused gas pipeline, a nitrogen regulating valve is arranged on the nitrogen pipeline, a pressure gauge is arranged at the top of the oil-water separation tank, and the diffused gas regulating valve, the nitrogen regulating valve and the pressure gauge are controlled in an interlocking mode through a control system.
And a safety valve is arranged at the top of the oil-water separation tank.
The storage tank heater adopts steam or heat conducting oil as a heating medium.
And the side wall of the oil-water separation tank at one side of the static separation zone is also provided with a field interface meter.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the partition plate is arranged in the oil-water separation tank, so that the newly-entered oil-containing separation water is prevented from disturbing a two-phase medium which is subjected to static separation before, the utilization rate of equipment is high, and the separation effect is good.
2) The top of the oil-water separation tank is provided with a nitrogen sealing system, and nitrogen with certain pressure is filled above the liquid level of the oil product, so that the volatilization of hydrocarbon substances can be effectively reduced, the loss of the oil product is reduced, and the environment pollution is avoided; on the other hand, the separated oil and water still have pressure, and no additional power conveying equipment is needed to be arranged during delivery, so that the energy is saved, the consumption is reduced, and the operation cost is low.
3) The system is arranged in further carrying out oil-water separation to the separation water behind the high pressure separator among the crude benzol refining technology, can retrieve the remaining oil in the separation aquatic by at utmost, is favorable to improving the product yield, increases the performance of enterprises, reduces follow-up water treatment system's production load and the operation degree of difficulty, avoids causing the pollution to the environment.
4) The system has simple and reasonable structure, less investment, small occupied area, convenient operation and easy implementation.
Drawings
FIG. 1 is a schematic structural diagram of an oil-water separation system of the present invention.
In the figure: 1. oil-water separation tank 2, partition 3, water inlet pipeline 4, water discharge pipeline 5, water discharge regulating valve 6, oil discharge pipeline 7, sight glass 8, valve 9, nitrogen regulating valve 10, diffused gas regulating valve 11, safety valve 12, pressure gauge 13, liquid level meter 14, field interface meter 15, storage tank heater
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the oil-water separation system of the present invention comprises an oil-water separation tank 1, a water inlet pipeline 3, a water discharge pipeline 4, an oil discharge pipeline 6, a gas release pipeline and a nitrogen pipeline; the oil-water separation tank 1 is a closed tank body, the top of the oil-water separation tank is provided with a diffused gas outlet which is connected with a diffused gas pipeline, and the diffused gas pipeline is connected with a nitrogen pipeline; the upper part of the oil-water separation tank 1 is provided with a partition plate 2 to divide the upper space of the oil-water separation tank 1 into a static separation zone and an oil-water disturbance zone, and the cross section area of the static separation zone is larger than that of the oil-water disturbance zone; a space is reserved between the upper edge of the partition plate 2 and the top of the oil-water separation tank 1, and the lower edge of the partition plate 2 is flush with an oil-water interface in the oil-water separation tank 1; a water inlet is arranged on the side wall of the oil-water separation tank 1 corresponding to one side of the oil-water disturbance area and is connected with the water inlet pipeline 3, and an oil outlet is arranged on the side wall of the oil-water separation tank 1 corresponding to one side of the static separation area and is connected with the oil outlet pipeline 6; the lower part of the oil-water separation tank 1 is provided with a storage tank heater 15, and the bottom is provided with a water outlet connected with a water drainage pipeline 4.
The position of the water inlet corresponds to the liquid phase area in the oil-water separation tank 1 and is higher than the lower edge of the partition plate 2.
The side wall of the oil-water separation tank 1 on one side of the static separation area is provided with a liquid level meter 13, the drainage pipeline 4 is provided with a drainage regulating valve 5, and the drainage regulating valve 5 and the liquid level meter 13 are controlled in an interlocking mode through a control system.
The oil discharge port is higher than the liquid phase region in the oil-water separation tank 1, and the part of the oil discharge pipeline 6 in the oil-water separation tank 1 is bent downwards and inserted below the liquid level of the static separation region; a sight glass 7 and a valve 8 are arranged on an oil discharge pipeline 6 outside the oil-water separation tank 1.
Be equipped with diffused gas governing valve 10 on the diffused gas pipeline, establish nitrogen gas governing valve 9 on the nitrogen gas pipeline, manometer 12 is established at the top of oil water separating tank 1, and diffused gas governing valve 10, nitrogen gas governing valve 9 pass through control system interlocking control with manometer 12.
The top of the oil-water separation tank 1 is provided with a safety valve 11.
The tank heater 15 uses steam or heat transfer oil as a heating medium.
And a field interface meter 14 is also arranged on the side wall of the oil-water separation tank 1 at one side of the static separation zone.
The working method of the high-efficiency, environment-friendly and energy-saving oil-water separation system is as follows:
1) the oil-containing separated water with the pressure higher than the nitrogen seal pressure in the oil-water separation tank 1 continuously enters the oil-water separation tank 1 through a water inlet pipeline 3; the oil-containing separated water enters from one side of the oil-water disturbance zone, enters the static separation zone through the lower part of the partition plate 2, stays in the static separation zone for a period of time, and is statically separated by utilizing the density difference of oil and water;
2) the oil-water separation tank 1 calculates the height and position of an oil-water interface of a static separation zone according to the oil content, the water density, the oil density and the time required by oil-water separation in the oil-containing separated water in advance, and enables the lower edge of the partition plate 2 to be flush with the oil-water interface; the oil-containing separated water enters the static separation area from the lower part of the clapboard 2, namely enters from an oil-water interface, so that the disturbance to the static separation area can be reduced to the maximum extent; after a period of time of stay, the oil phase is accumulated in the static separation zone above the oil-water interface, and the water phase is deposited in the oil-water separation tank 1 below the oil-water interface; in order to keep the liquid level in the tank stable, the drainage regulating valve 5 and the liquid level meter 13 are interlocked through a control system to realize automatic regulation, and the continuous drainage quantity at the bottom of the oil-water separation tank 1 is controlled through the opening degree of the drainage regulating valve 5;
3) the oil-water separation water containing more water and less oil is periodically opened by observing the position of an oil-water interface displayed by the field interface meter 14 and combining the medium flowing condition and the color change in the sight glass 7 on the oil discharge pipeline 6, and the oil at the upper part of the static separation area is discharged;
4) the top of the oil-water separation tank 1 is provided with a nitrogen sealing system, the amount of nitrogen entering the oil-water separation tank 1 and the amount of diffused gas exhausted from the oil-water separation tank 1 are regulated in a split-range mode through a nitrogen regulating valve 9 and a diffused gas regulating valve 10, so that the pressure of the tank top is kept constant, the volatilization of oil vapor is reduced, meanwhile, the separated water and oil are still under the pressure, and the requirement of long-distance conveying is met;
5) the top of the oil-water separation tank 1 is provided with a safety valve 11, once overpressure in the tank is generated due to overhigh pressure of oil-containing separation water or failure of a nitrogen sealing system, when the opening pressure of the safety valve 11 is reached, the safety valve 11 jumps, the system releases pressure, and damage to equipment and pipelines is avoided;
6) the bottom of the oil-water separation tank 1 is provided with a storage tank heater 15 to prevent water at the lower part of the oil-water separation tank from freezing in winter in cold regions.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. An efficient, environment-friendly and energy-saving oil-water separation system is characterized by comprising an oil-water separation tank, a water inlet pipeline, a water drainage pipeline, an oil drainage pipeline, a gas release pipeline and a nitrogen pipeline; the oil-water separation tank is a closed tank body, the top of the oil-water separation tank is provided with a diffused gas outlet which is connected with a diffused gas pipeline, and the diffused gas pipeline is connected with a nitrogen pipeline; the upper part of the oil-water separation tank is provided with a partition plate which divides the upper space of the oil-water separation tank into a static separation zone and an oil-water disturbance zone, and the cross section area of the static separation zone is larger than that of the oil-water disturbance zone; a space is reserved between the upper edge of the partition plate and the top of the oil-water separation tank, and the lower edge of the partition plate is flush with an oil-water interface in the oil-water separation tank; a water inlet is arranged on the side wall of the oil-water separation tank corresponding to one side of the oil-water disturbance area and connected with a water inlet pipeline, and an oil outlet is arranged on the side wall of the oil-water separation tank corresponding to one side of the static separation area and connected with an oil outlet pipeline; the lower part of the oil-water separation tank is provided with a storage tank heater, and the bottom of the oil-water separation tank is provided with a water outlet connected with a water drainage pipeline.
2. The oil-water separation system of claim 1, wherein the water inlet is located at a position corresponding to a liquid phase region in the oil-water separation tank and higher than a lower edge of the partition.
3. The system as claimed in claim 1, wherein a liquid level meter is disposed on the sidewall of the oil-water separation tank on the side of the static separation zone, a drain control valve is disposed on the drain pipeline, and the drain control valve and the liquid level meter are controlled by the control system in an interlocking manner.
4. The oil-water separation system of claim 1, wherein the oil outlet is higher than the liquid phase region in the oil-water separation tank, and the part of the oil outlet pipeline in the oil-water separation tank bends downward and is inserted below the liquid level of the static separation zone; a sight glass and a valve are arranged on an oil discharge pipeline outside the oil-water separation tank.
5. The oil-water separation system of claim 1, wherein a purge gas regulating valve is arranged on the purge gas pipeline, a nitrogen regulating valve is arranged on the nitrogen pipeline, a pressure gauge is arranged at the top of the oil-water separation tank, and the purge gas regulating valve, the nitrogen regulating valve and the pressure gauge are controlled in an interlocking manner through a control system.
6. The environment-friendly energy-saving oil-water separation system as claimed in claim 1, wherein a safety valve is arranged at the top of the oil-water separation tank.
7. The system of claim 1, wherein the storage tank heater uses steam or heat transfer oil as a heating medium.
8. The system of claim 1, wherein a field interface meter is further disposed on a sidewall of the oil-water separation tank on the side of the static separation zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022193926.0U CN213790090U (en) | 2020-09-29 | 2020-09-29 | Efficient, environment-friendly and energy-saving oil-water separation system |
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| CN202022193926.0U CN213790090U (en) | 2020-09-29 | 2020-09-29 | Efficient, environment-friendly and energy-saving oil-water separation system |
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| CN213790090U true CN213790090U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112190977A (en) * | 2020-09-29 | 2021-01-08 | 中冶焦耐(大连)工程技术有限公司 | Efficient, environment-friendly and energy-saving oil-water separation system and working method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112190977A (en) * | 2020-09-29 | 2021-01-08 | 中冶焦耐(大连)工程技术有限公司 | Efficient, environment-friendly and energy-saving oil-water separation system and working method thereof |
| CN112190977B (en) * | 2020-09-29 | 2023-10-20 | 中冶焦耐(大连)工程技术有限公司 | Efficient, environment-friendly and energy-saving oil-water separation system and working method thereof |
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