CN112429804A

CN112429804A - Oil-water separation equipment

Info

Publication number: CN112429804A
Application number: CN202011268706.8A
Authority: CN
Inventors: 杨敬民; 秦四海; 吴煜男
Original assignee: Qingdao Shuanglianying Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Qingdao Shuanglianying Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-03-02
Anticipated expiration: 2040-11-13
Also published as: CN112429804B

Abstract

The invention discloses an oil-water separation device, comprising: the top of the tank body is provided with a liquid inlet and an oil outlet, and the bottom of the tank body is provided with a water outlet and a back flushing port; the liquid inlet is also provided with a water distributor which is transversely arranged above the separation bed; a separation bed disposed in the tank; the backwashing component is arranged in the tank body in a vertically sliding manner and is positioned below the separation bed, and a water flow channel for supplying water to flow towards the water outlet in one direction is arranged on the backwashing component; the compressible filter layer is used for adsorbing oil contained in water and is arranged between the separation bed and the backwashing component. The operation cost is reduced, and the recovery utilization rate of oil is improved.

Description

Oil-water separation equipment

Technical Field

The invention relates to the technical field of machinery, in particular to oil-water separation equipment.

Background

The oil-water mixture has wide sources, and a large amount of oil-water mixture is produced in the production process in the fields of oil fields, steel mills, oil refineries, chemical plants and the like. In order to sufficiently recover and utilize the oil in the oil-water mixture, an oil-water separator is generally used for separation. For example: chinese patent No. 201510548670.1 discloses an embedded oil-water separator, when in use, an oil-water mixture enters the separator and is treated by a separation bed, so that oil molecules in the mixture are separated from water and are gathered together to float upwards, and the purpose of oil-water separation is achieved. In the above scheme, a small amount of oil remains in the outputted water, and therefore, in the oil-water separator disclosed in chinese patent No. 201921796736.9, an activated carbon filter layer is added outside the water output head after oil-water separation to further absorb oil molecules in the water. However, as the service life increases, the activated carbon filter layer will be blocked by oil molecules, and then the activated carbon filter layer needs to be replaced regularly, so that the service cost increases, and on the other hand, part of oil is adsorbed in the activated carbon, so that the oil is wasted and cannot be recycled. Therefore, how to design a technology with low operation cost and high oil recovery rate is a technical problem to be solved by the invention.

Disclosure of Invention

The invention provides oil-water separation equipment, which reduces the operation cost and improves the recovery utilization rate of oil.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an oil-water separation device, comprising:

the top of the tank body is provided with a liquid inlet and an oil outlet, and the bottom of the tank body is provided with a water outlet and a back flushing port; the liquid inlet is also provided with a water distributor which is transversely arranged above the separation bed;

a separation bed disposed in the tank;

the backwashing component is arranged in the tank body in a vertically sliding manner and is positioned below the separation bed, and a water flow channel for supplying water to flow towards the water outlet in one direction is arranged on the backwashing component;

the compressible filter layer is used for adsorbing oil contained in water and is arranged between the separation bed and the backwashing component.

Furthermore, the back washing assembly comprises a first supporting plate, a second supporting plate and a supporting frame; wherein the support frame is disposed between the first support plate and the second support plate; the water flow channel is formed between the first water outlet and the second water outlet.

Furthermore, a one-way valve is arranged on the first water outlet or the second water outlet.

Furthermore, the back washing assembly further comprises a connecting water pipe, and the connecting water pipe is connected between the corresponding first water outlet and the corresponding second water outlet.

Furthermore, a one-way valve is arranged on the connecting water pipe.

Further, the outer edge of the first supporting plate and/or the second supporting plate is/are provided with a sealing ring, and the sealing ring is used for sealing a connecting area formed between the backwashing component and the inner wall of the tank body; and/or a sealing gasket is arranged between the first supporting plate and the second supporting plate and used for sealing a connecting area formed between the backwashing component and the inner wall of the tank body.

Furthermore, the backwashing component is provided with a plurality of water permeable gaps which are used for communicating two cavities separated by the backwashing component in the tank body.

Furthermore, a limiting part is further arranged in the tank body, and the limiting part is located below the backwashing component and used for limiting the backwashing component.

Further, still include aeration components, aeration components includes intake pipe and aeration pipe, the intake pipe with the aeration pipe is connected, the aeration pipe set up in the jar body and be located the below of back flush subassembly.

Furthermore, the top of the tank body is also provided with a mounting hole, and a position limiting instrument is arranged in the mounting hole.

Compared with the prior art, the technical scheme of the invention has the following technical effects: by adding the backwashing component and the compressible filter layer in the tank body, before water separated and treated by the separation bed is output through the water outlet, the water is subjected to filtering treatment by the compressible filter layer, so that the high requirement on the cleanliness of the outlet water is met, and the filtered water flows to the water outlet through the water flow channel of the backwashing component and is finally output to the outside of the tank body; meanwhile, the compressible filter layer continuously adheres oil molecules in the filtering process, after the filter is used for a period of time, water can be injected to the bottom of the tank body through the back flushing port to drive the back flushing assembly to move upwards and compress the compressible filter layer, the compressible filter layer is compressed, oil molecules adsorbed in the compressible filter layer are extruded and gathered together and then float upwards and output, on one hand, the compressible filter layer is extruded and cleaned, on the other hand, oil in the compressible filter layer can be fully recovered, on the other hand, the active carbon filter layer does not need to be frequently replaced, the operation is reduced, and the recovery rate of the oil is improved.

Drawings

FIG. 1 is a schematic view of an oil-water separator according to the present invention;

FIG. 2 is a second schematic view of the oil-water separation apparatus according to the present invention;

FIG. 3 is a schematic structural diagram of a back washing assembly in the oil-water separation device of the present invention;

FIG. 4 is a sectional view of a backwash assembly in the oil water separating device of the present invention.

Detailed Description

As shown in fig. 1 to 4, the present invention provides an oil-water separating apparatus, including:

a liquid inlet 11 and an oil outlet 12 are arranged at the top of the tank body 1, and a water outlet 13 and a back flushing port (not shown) are arranged at the bottom of the tank body 1;

the separation bed 2, the separation bed 2 is set up in the tank 1;

the backwashing component 3 is arranged in the tank body 1 and positioned below the separation bed 2 in a vertically sliding manner, and a water flow channel 300 for supplying water to flow towards the water outlet 13 in one direction is arranged on the backwashing component 3;

a compressible filter layer 4, the compressible filter layer 4 is used for absorbing oil contained in water, and the compressible filter layer 4 is arranged between the separation bed 2 and the backwashing component 3.

Specifically, in the actual use process, the oil-water mixture enters the top of the tank body 1 through the liquid inlet 11, and the mixture entering the tank body 1 flows to the lower separation bed 2. The separating bed 2 is transversely arranged in the tank body 1, after the mixture passes through the separating bed 2, the water and the oil are separated from each other under the separating action of the separating bed 2, and meanwhile, the separated oil is combined with each other to form larger oil drops. The specific gravity of oil drops is lighter than that of water, so that the oil drops can rapidly rise and form an oil storage area at the top of the tank body 1, wherein the structure configuration of the conventional oil-water separator can be referred to in the oil-water separation mode of the separation bed 2, and is not limited or described herein. In addition, for the compressible filter layer 4, a sponge body such as an oil absorption sponge, or a hydrophobic oleophilic Polydimethylsiloxane (PDMS) elastic skeleton material with a three-dimensional porous structure may be adopted, and no limitation or description is given here.

The water separated by the separation bed 2 still contains a small amount of oil, the water continues to flow downwards to the compressible filter layer 4, the water is filtered by the compressible filter layer 4, so that the oil contained in the water is adsorbed by the compressible filter layer 4, and finally, the water flows to the bottom of the tank body 1 through the water flow channel 300 on the backwashing component 3 and is discharged to the outside of the tank body 1 through the water discharge port 13.

As the usage time increases, the amount of oil adsorbed in the compressible filter layer 4 increases, and the oil absorption capacity of the compressible filter layer 4 decreases gradually. At this time, the compressible filter layer 4 needs to be squeezed by the backwashing component 3, water is injected into the bottom of the tank body 1 through the backwashing port, and the water pressure at the bottom of the tank body 1 is gradually increased and drives the backwashing component 3 to move upwards due to the unidirectional design of the water flow channel 300 of the backwashing component 3. As shown in fig. 2, the backwash assembly 3 during the movement squeezes the compressible filter layer 4 such that the compressible filter layer 4 is sandwiched between the backwash assembly 3 and the separation bed 2, thereby squeezing out the oil in the compressible filter layer 4. Since there is still a large amount of oil-water mixture above the backwash assembly 3, the squeezed oil will float to the top of the tank 1. After the pressure of the back washing opening is relieved or the water outlet 13 is opened, the back washing component 3 gradually descends, the compressible filter layer 4 gradually expands after releasing pressure, and in the expansion process, the compressible filter layer 4 adsorbs a large amount of water and a small amount of oil, so that the compressible filter layer 4 recovers the filtering capacity again.

Wherein, in order to improve oil-water separation's effect, then jar body 1 from top to bottom arranges multilayer separation bed 2, to arrange the three-layer in figure 1 as the example, the oil-water mixture is through three-layer separation processing back, can make the effectual separation of oil water, in order to improve treatment effeciency. Meanwhile, a water distributor 111 may be further disposed on the liquid inlet 11, and the water distributor 111 is transversely disposed above the separation bed 2 to uniformly distribute the oil-water mixture to the separation bed 2 below through the water distributor 131, thereby improving the oil-water separation efficiency.

In order to facilitate the control of the discharge of the oil accumulated on the top of the tank 1, a mounting port 14 may be further provided on the top of the tank 1, and a level meter (not shown) may be provided in the mounting port, and specifically, the level meter may detect the amount of the oil accumulated on the top of the tank 1, and when the amount of the oil accumulated reaches a discharge standard, the oil discharge port 12 may be opened to discharge the oil to the outside. And the oil drain 12 is located above the liquid inlet 11 to facilitate the output of oil and reduce interference associated with the incoming mixture.

Meanwhile, according to the requirement, the bottom of the tank body 1 can be respectively provided with an independent water outlet 13 and a back flush port, and for the convenience of pipeline connection, the water outlet 13 and the back flush port are the same port, namely, one port is arranged at the bottom of the tank body 1 to simultaneously meet the use requirements of the water outlet 13 and the back flush port.

Furthermore, the entity of the back washing assembly 3 is that, in order to satisfy the requirement that the back washing assembly 3 slides up and down stably in the tank 1, the back washing assembly 3 comprises a first support plate 31, a second support plate 32 and a support frame 33; wherein the support frame 33 is disposed between the first support plate 31 and the second support plate 32; a plurality of first water outlets (not marked) are formed in the first supporting plate 31, a plurality of second water outlets (not marked) are formed in the second supporting plate 32, and a water flow channel 300 is formed between the first water outlets and the second water outlets. Specifically, the first support plate 31 and the second support plate 32 are connected together by the support frame 33, so that the backwashing assembly 3 has a sufficient width, and the requirement that the backwashing assembly 3 slides up and down in the tank 1 is met. The supporting frame 33 can adopt a grid structure, so that the weight is effectively reduced under the condition of meeting the structural strength requirement.

In order to achieve the requirement of unidirectional water flow in the water flow channel 300, a check valve 30 may be disposed at the first water outlet or the second water outlet. Preferably, the backwashing assembly 3 further comprises a connecting water pipe 34, and the connecting water pipe 34 is connected between the corresponding first water outlet and the second water outlet. Specifically, the water above is delivered to the lower space of the tank 1 through the connection water pipe 34, and the connection water pipe 34 is provided with a check valve to realize this.

Further, in order to improve the sealing strength between the backwash assembly 3 and the inner wall of the tank 1, a sealing ring (not shown) is provided at the outer edge of the first support plate 31 and/or the second support plate 32, and the sealing ring is used for sealing a connection region formed between the backwash assembly 3 and the inner wall of the tank 1; and/or a sealing gasket (not shown) is arranged between the first supporting plate 31 and the second supporting plate 32 and is used for sealing a connecting area formed between the backwashing assembly 3 and the inner wall of the tank body 1. Take the example that the outer edges of the first supporting plate 31 and the second supporting plate 32 are provided with sealing rings, the sealing rings can be attached to the inner wall of the tank body 1, and then the effective sealing effect is achieved.

Furthermore, in order to clean the oil adhering to compressible filter layer 4 more effectively, backwash assembly 3 is provided with a plurality of water-permeable slits 35, and water-permeable slits 35 are used to communicate with two chambers partitioned by backwash assembly 3 in tank 1. Specifically, during the process that the backwashing assembly 3 is driven by the water pressure at the bottom of the tank body 1 to move upwards to extrude the compressible filter layer 4, the water at the bottom of the tank body 1 can flow into the compressible filter layer 4 through the water permeable gaps 35, and then the effect of flushing the compressible filter layer 4 is achieved. Meanwhile, the size of the water permeable gap 35 is small, so that the cavity below the backwashing assembly 3 has enough water pressure to drive the backwashing assembly 3 to move upwards. More importantly, because the size of the gap 35 that permeates water is less, under the effect of high-pressure water pressure, the velocity of water flow from the gap 35 that permeates water is faster, and then can be more high-efficient thorough wash compressible formula filter layer 4, and then improve cleaning efficiency.

For the position of the backwashing component 3, the position of the backwashing component 3 can be limited by further providing a limiting member 15 in the tank body 1, specifically, the limiting member is located below the backwashing component 3 and is used for limiting the backwashing component 3, and the limiting member can limit the bottom of the backwashing component 3 in a circular manner.

Still further, the oil-water separation equipment also comprises an aeration component 5, the aeration component 5 comprises an air inlet pipe 51 and an aeration pipe 52, the air inlet pipe 51 is connected with the aeration pipe 52, and the aeration pipe 52 is arranged in the tank body 1 and is positioned below the backwashing component 3. Specifically, in the process of extrusion backwashing of the compressible filter layer 4 through the backwashing component 3, the air inlet pipe 51 is filled with air, the air is uniformly released to the bottom of the tank body 1 through the aeration pipe 52, and the air enters the compressible filter layer 4 through the water permeable gap 35, so that the oil adhered to the compressible filter layer 4 is impacted and scattered by the air, and the compressible filter layer 4 is cleaned more thoroughly and effectively.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An oil-water separation apparatus, comprising:

a separation bed disposed in the tank;

2. The oil-water separation apparatus of claim 1, wherein the backwash assembly comprises a first support plate, a second support plate, and a support frame; wherein the support frame is disposed between the first support plate and the second support plate; the water flow channel is formed between the first water outlet and the second water outlet.

3. The oil-water separator according to claim 2, wherein a check valve is provided at the first water outlet or the second water outlet.

4. The oil-water separation device according to claim 2, wherein the back-washing unit further comprises a connection water pipe connected between the corresponding first water outlet and the second water outlet.

5. The apparatus according to claim 4, wherein a check valve is provided on the connection water pipe.

6. The oil-water separation device according to claim 2, wherein the outer edge of the first support plate and/or the second support plate is provided with a sealing ring for sealing a connection region formed between the backwash assembly and the inner wall of the tank body; and/or a sealing gasket is arranged between the first supporting plate and the second supporting plate and used for sealing a connecting area formed between the backwashing component and the inner wall of the tank body.

7. The oil-water separation device according to any one of claims 1 to 6, wherein the backwash assembly is provided with a plurality of water-permeable slits for communicating two chambers separated by the backwash assembly in the tank.

8. The oil-water separation apparatus of claim 1, wherein a limiting member is further disposed in the tank, and the limiting member is located below the backwashing assembly and is used for limiting the backwashing assembly.

9. The oil-water separation apparatus of claim 1, further comprising an aeration assembly, wherein the aeration assembly comprises an air inlet pipe and an aeration pipe, the air inlet pipe is connected with the aeration pipe, and the aeration pipe is arranged in the tank body and is positioned below the backwashing assembly.

10. The oil-water separation device of claim 1, wherein the tank body is further provided with a mounting opening at the top, and a position limiter is arranged in the mounting opening.