CN115591275A - A high-efficient oil-water separator for in debenzolization tower - Google Patents
A high-efficient oil-water separator for in debenzolization tower Download PDFInfo
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- CN115591275A CN115591275A CN202211142339.6A CN202211142339A CN115591275A CN 115591275 A CN115591275 A CN 115591275A CN 202211142339 A CN202211142339 A CN 202211142339A CN 115591275 A CN115591275 A CN 115591275A
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- oil
- tower
- polymerization
- water
- debenzolization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
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- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to the technical field of debenzolization towers, in particular to a high-efficiency oil-water separation device used in a debenzolization tower. The oil-water separation device is arranged between an upper tower tray and a lower tower tray in the debenzolization tower, is of a vertical box structure and comprises a distribution stable flow area, a polymerization separation area and an oil-water separation area; the distribution stable flow area is provided with a uniform distribution plate; the polymerization separation zone is provided with a plurality of layers of horizontal polymerization plates, and the polymerization plates are provided with a combination structure of wing plates and oil lifting pipes; the oil-water separation area is provided with a water collecting tank and an oil overflow tank. The invention integrates gravity separation and polymerization separation into a whole and has compact structure. The tower tray is arranged between the upper layer and the lower layer in the debenzolization tower, the gas-liquid flow in the tower is not influenced, and the space of the debenzolization tower is saved. And a multi-layer structural frame is not required to be arranged, an oil return pump is not required to be additionally arranged, and the cost and the energy consumption are reduced. The horizontal polymerization plates arranged in parallel have small floating distance of oil droplet particles, short oil removing time and high oil removing efficiency.
Description
Technical Field
The invention relates to the technical field of debenzolization towers, in particular to a high-efficiency oil-water separation device used in a debenzolization tower.
Background
The debenzolization tower refers to a distillation device of a crude benzene absorption method by wash oil. The benzene removing tower is an operating device which is subordinate to the desorption tower and evaporates and releases the benzene hydrocarbon dissolved in the wash oil solvent through the direct contact heat transfer of the heat carrier. The operation principle is as follows: the method is characterized in that ordinary heat carrier superheated steam is selected as a heating agent, so that the equilibrium vapor pressure of crude benzene on the liquid surface of the wash oil is larger than the partial pressure of the crude benzene in a carrier, and vapor-liquid two phases are in countercurrent contact to carry out mass transfer and heat transfer, so that the crude benzene is gradually released from rich oil, a mixture of benzene vapor and steam is obtained at the tower top, and relatively pure lean oil is obtained at the tower bottom.
At present, in order to ensure the stable operation of a debenzolization tower in a coking plant, condensed water is separated from a debenzolization tower system, a liquid breaking disc is generally arranged in the debenzolization tower, oil-water mixed liquid is led to an independent oil-water separator for oil-water separation, and separated oil is returned to a next layer of tower disc of the debenzolization tower.
The following disadvantages exist: 1. in order to realize the installation and the field operation and maintenance of the independent oil-water separator, a multi-layer structural frame is required to be arranged, and further the construction investment is increased. 2. The oil-water separator is arranged on the ground, and an oil return pump needs to be additionally arranged, so that the energy consumption of the operation of the device is greatly increased. 3. The oil-water mixed liquid needs to be led to an independent oil-water separator, and then the separated oil returns to the debenzolization tower, so that the oil-water separation efficiency is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the high-efficiency oil-water separation device used in the debenzolization tower, which improves the oil-water separation efficiency, has a compact structure, saves the space of the debenzolization tower, and reduces the cost and the energy consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency oil-water separation device used in a debenzolization tower is arranged between an upper tower tray and a lower tower tray in the debenzolization tower, has a vertical box structure and comprises a distribution stable flow area, a polymerization separation area and an oil-water separation area; the distribution stable flow area is provided with a uniform distribution plate; the polymerization separation area is provided with a plurality of layers of horizontal polymerization plates, and the polymerization plates are provided with a combined structure of wing plates and oil lifting pipes; the oil-water separation zone is provided with a water collecting tank and an oil overflow tank.
As a further improvement of the invention, the uniform distribution plate is a vertical downcomer of an upper tray, and a plurality of distribution holes are uniformly distributed on the downcomer along the vertical direction.
As a further improvement of the invention, one end of the polymerization plate is adjacent to the uniform distribution plate, the end part of the other end of the polymerization plate is provided with a flange wing plate, the oil lifting pipe is positioned at the flange wing plate, and the axis of the oil lifting pipe is vertical.
As a further improvement of the invention, the folded edge of the wing plate is a downward folded edge; the oil lifting pipes are arranged in a row.
As a further improvement of the invention, the water collecting tank and the oil overflow tank are completely separated by a partition plate, the oil overflows to a liquid receiving tray of a lower tray, and the water flows through the water collecting tank and is discharged out of the tower.
As a further improvement of the invention, the device also comprises an overflow weir and a U-shaped groove, wherein the U-shaped groove is connected with the oil overflow groove, and the overflow weir is connected with the U-shaped groove.
As a further improvement of the invention, the water-saving device also comprises a drain pipe which is communicated with the water collecting tank.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention is horizontally provided with a plurality of layers of oil-water separation polymerization plates, in a polymerization separation zone, when an oil-water mixed phase flows through the horizontally arranged plurality of layers of oil-water separation polymerization plates, oil droplet particles gradually float and polymerize, an oil film is formed on the lower surface of the polymerization plates and moves along the plate surface, a water phase settles under the action of gravity, and the upper surface of the polymerization plate at the bottom layer realizes oil-water stratification. The invention integrates gravity separation and polymerization separation into a whole and has compact structure.
2) The invention is arranged between the upper and lower tower trays in the debenzolization tower, does not influence the gas-liquid flow in the tower and saves the space of the debenzolization tower. The multi-layer structural frame is not required to be arranged, an oil return pump is not required to be additionally arranged, and the cost and the energy consumption are reduced.
3) The horizontal polymerization plates arranged in parallel have small floating distance of oil droplet particles, short oil removing time and high oil removing efficiency.
And the end of the polymerization plate is provided with a composite structure of the wing plate with the folded edge and the oil lifting pipe, so that oil and water can be effectively separated between the polymerization plates, the oil phase on the lower surface of the polymerization plate is blocked by the wing plate with the folded edge on the end of the polymerization plate, the oil phase flows upwards through the oil lifting pipe, and the water phase continues to flow horizontally between the oil lifting pipes, so that the phenomenon of back mixing of the layered oil phase and the layered water phase is avoided.
Drawings
FIG. 1 is a front view of the structure and process principle of the present invention;
FIG. 2 is a schematic top view of the structure of the present invention;
FIG. 3 is a schematic left side view of the present invention;
FIG. 4 is a right side elevational view of the present invention in a schematic configuration;
FIG. 5 is a schematic view of a polymeric sheet structure of the present invention.
In the figure: 1-distribution plate 2-polymerization plate 3-oil lifting pipe 4-wing plate 5-overflow weir 6-U-shaped groove 7-drain pipe 8-gas phase ascending channel 9-water collecting tank 10-partition plate 11-oil overflowing groove 12-oil baffle plate 13-debenzolization tower 14-tray
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
[ examples ] A method for producing a compound
A high-efficiency oil-water separation device used in a debenzolization tower comprises a uniform distribution plate 1, a polymerization plate 2, an oil lifting pipe 3, a wing plate 4, an overflow weir 5, a U-shaped groove 6, a drain pipe 7, a gas phase ascending channel 8, a water collecting tank 9, a partition plate 10, an overflow groove 11 and an oil baffle plate 12.
The invention is arranged between an upper layer tower tray 14 and a lower layer tower tray 14 in a debenzolization tower 13, and is of a vertical square box structure, and comprises a distribution steady flow area, a polymerization separation area and an oil-water separation area.
The distribution stable flow area is provided with a uniform distribution plate 1, the uniform distribution plate 1 is a vertical downcomer of the upper tray 14, and a plurality of distribution holes are uniformly distributed on the downcomer along the vertical direction.
The polymeric separation zone is provided with multiple horizontal polymeric sheets 2. The polymerization plate 2 is provided with a combination structure of a wing plate 4 and an oil lifting pipe 3, one end of the polymerization plate 2 is adjacent to the uniform distribution plate 1, the end part of the other end of the polymerization plate 2 is provided with the wing plate 4 folded downwards, the oil lifting pipe 3 is positioned at the wing plate 4 and is close to the wing plate 4, and the axis of the oil lifting pipe 3 is vertical. The oil lifting pipe 3 is provided with a plurality of oil lifting pipes which are arranged in a row.
The oil-water separation zone is provided with a water collecting tank 9 and an oil spilling tank 11. The water collecting tank 9 and the oil overflow tank 11 are completely separated by a partition plate 10, oil overflows to a liquid receiving tray of a lower tray, and water flows out of the tower through the water collecting tank 9.
The U-shaped groove 6 is connected with the oil overflow groove 11, and the overflow weir 5 is connected with the U-shaped groove 6. The drain pipe 7 is communicated with the water collecting tank 9.
The invention integrates gravity separation and polymerization separation into a whole, effectively performs oil-water separation between the trays 14 of the debenzolization tower 13, and the separation device is arranged between the upper and lower trays 14 of the two-layer debenzolization tower 13, thereby not influencing the gas-liquid flow in the tower and saving the space of the debenzolization tower.
In the distribution stable flow area, distribution holes are arranged on the downcomer of the upper tray to serve as the uniform distribution plate 1, so that the mixed phase is distributed more uniformly, the flow velocity is stable, the impact on the liquid level is reduced, and the gas in the liquid phase is separated.
In the polymerization separation zone, when the oil-water mixture phase flows through the multilayer oil-water separation polymerization plate 2 that sets up horizontally, oil droplet particle upwards floats gradually, the polymerization, forms the oil film at the lower surface of polymerization plate 2 to along the face removal, the aqueous phase subsides under the action of gravity, the upper surface of lower floor polymerization plate 2 realizes the profit layering, parallel arrangement's horizontal polymerization plate 2, oil droplet particle upwards-floating interval is little, deoiling time is short, deoiling is efficient.
The composite structure of the wing plate 4 with the folded edge and the oil lifting pipe 3 arranged at the tail end of the polymerization plate 2 can effectively separate oil from water between the polymerization plate 2, the oil phase on the lower surface of the polymerization plate 2 is blocked by the wing plate 4 with the folded edge at the tail end of the polymerization plate 2, the water phase flows upwards through the oil lifting pipe 3 and continues to flow horizontally between the oil lifting pipes, and the phenomenon of back mixing of the layered oil phase and the layered water phase is avoided.
In the oil-water separation zone, the water phase flowing horizontally converges into the water collection tank 9, the oil phase flows over the overflow weir 5 and enters the oil overflow tank 11 through the U-shaped groove 6, the oil-water separation zone is arranged at the upper part of the liquid receiving tray of the lower tray 14, the water collection tank 9 and the oil overflow tank 11 are completely separated by the partition board 10 and are communicated with the gas phase of the tray 14, the oil phase flows to the liquid receiving tray of the lower tray, and the water phase is discharged out of the tower.
The invention improves the oil-water separation efficiency, has compact structure, saves the space of the debenzolization tower and reduces the cost and the energy consumption.
The above description is only a partial embodiment of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.
Claims (7)
1. The utility model provides a high-efficient oil-water separator for in debenzolization tower which characterized in that: the oil-water separation device is arranged between an upper tower tray and a lower tower tray in the debenzolization tower, is of a vertical box structure and comprises a distribution stable flow area, a polymerization separation area and an oil-water separation area; the distribution stable flow area is provided with a uniform distribution plate; the polymerization separation zone is provided with a plurality of layers of horizontal polymerization plates, and the polymerization plates are provided with a combination structure of wing plates and oil lifting pipes; the oil-water separation area is provided with a water collecting tank and an oil overflow tank.
2. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 1, characterized in that: the uniform distribution plate is a vertical downcomer of an upper tray, and a plurality of distribution holes are vertically and uniformly distributed on the downcomer.
3. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 1, characterized in that: one end of the polymerization plate is adjacent to the uniform distribution plate, the end part of the other end of the polymerization plate is provided with a flange wing plate, the oil lifting pipe is positioned at the flange wing plate, and the axis of the oil lifting pipe is vertical.
4. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 3, characterized in that: the folded edge of the wing plate is a downward folded edge; the oil lifting pipes are arranged in a row.
5. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 1, characterized in that: the water collecting tank and the oil overflow tank are completely separated by a partition plate, oil overflows to a liquid receiving plate of a lower tray, and water flows out of the tower through the water collecting tank.
6. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 1, characterized in that: the oil-water separator further comprises an overflow weir and a U-shaped groove, the U-shaped groove is connected with the oil overflow groove, and the overflow weir is connected with the U-shaped groove.
7. The high-efficiency oil-water separation device used in the debenzolization tower as claimed in claim 1, characterized in that: the water collecting tank is communicated with the water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211142339.6A CN115591275A (en) | 2022-09-20 | 2022-09-20 | A high-efficient oil-water separator for in debenzolization tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211142339.6A CN115591275A (en) | 2022-09-20 | 2022-09-20 | A high-efficient oil-water separator for in debenzolization tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115591275A true CN115591275A (en) | 2023-01-13 |
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ID=84843736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211142339.6A Pending CN115591275A (en) | 2022-09-20 | 2022-09-20 | A high-efficient oil-water separator for in debenzolization tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115591275A (en) |
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2022
- 2022-09-20 CN CN202211142339.6A patent/CN115591275A/en active Pending
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