CN210885656U - Oil-water separation device - Google Patents
Oil-water separation device Download PDFInfo
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- CN210885656U CN210885656U CN201921831709.0U CN201921831709U CN210885656U CN 210885656 U CN210885656 U CN 210885656U CN 201921831709 U CN201921831709 U CN 201921831709U CN 210885656 U CN210885656 U CN 210885656U
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Abstract
The utility model discloses an oil-water separation device, including pretreatment systems, membrane separation system, ultrasonic separation system, wherein, pretreatment systems includes former water pitcher, former water neutralizer, the filter, the sour fluid reservoir, the lye tank, the former water delivery pump, the neutralization water delivery pump, the water purification circulating pump, membrane separation system includes one-level membrane separator, second grade membrane separator, one-level light oil collector, one-level heavy oil collector, second grade light oil collector, second grade heavy oil collector, the light oil tank, the water purification buffer tank, the heavy oil tank, ultrasonic separation system includes the ultrasonic emulsion breaker, ultrasonic generator, the breakdown of emulsion water circulating pump. The utility model discloses a set up hydrophilic oleophobic fibre filter material ball and filter small-grain size oil globule in advance, adopt two-stage membrane separation system and supersound breakdown of emulsion method for oil-water separation's effect is obviously superior to traditional oil water separator's effect.
Description
Technical Field
The utility model relates to an energy chemical industry equipment, concretely relates to oil-water separator.
Background
The coal, gas and oil shortage are the basic characteristics of the energy structure in China, and the coal is still the main primary energy in the next 20 years. However, a certain amount of wastewater is generated in the coal gasification, coking and quality-based utilization processes, the wastewater is complex in components and contains a large amount of oil pollutants such as phenols, biphenyls, pyridines, indoles and quinolines, and the discharge of the oil-containing liquid in the environment can seriously affect the ecological system and the natural environment.
According to the requirements of the latest environmental protection laws, the wastewater generated by the existing coal chemical industry enterprises must be discharged after reaching standards. The main treatment process of the coal chemical wastewater adopts a three-stage treatment process: the first-stage treatment refers to the recycling of pollutants in the oily wastewater, and the process comprises oil-water separation, raw water dephenolization and raw water deamination; secondary treatment, mainly aiming at further reducing the content of organic matters and ammonia nitrogen in the wastewater, and mainly taking biochemical treatment as a main treatment; the third-level advanced treatment is to reduce the COD content in the biochemical effluent to be below 80mg/L and reduce the ammonia nitrogen content to be below 10 mg/L. The oil-water separation process mainly recovers suspended oil, dispersed oil, emulsified oil and dissolved oil in water, finally reduces the oil content in the treated water to below 50mg/L, and prevents the normal metabolic process of activated sludge and biomembranes from being influenced by overhigh oil concentration in the water. Common oil-water separation methods include an oil separation method, an air floatation method, a resin method, an adsorption method and the like, wherein the oil separation method and the air floatation method are the most common methods. The method can only extract and separate the floating oil which has the oil globule diameter of more than 100 mu m and is easy to float on the liquid surface, and has no capability to the dispersed oil which has the oil globule diameter of 10-100 mu m and contains tiny oil globules suspended in the liquid, and the emulsified oil which has the oil globule diameter of 0.1-10 mu m.
Therefore, for the field of energy chemical industry, when the raw water with high emulsified oil content, complex components and large oil content fluctuation is subjected to oil-water separation in the coal chemical wastewater in the prior art, the oil-water separation effect is poor, so that the subsequent biochemical system is unstable in operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an effectual especially effectual oil-water separator to the separation of emulsified oil of water separation.
The purpose of the utility model is realized through the following technical scheme: the device comprises a raw water tank and a raw water neutralizer, wherein the raw water neutralizer is communicated with the raw water tank through a raw water delivery pump, the top of the raw water neutralizer is provided with an acid liquid tank and an alkali liquid tank, the raw water neutralizer is communicated with a hydrophilic and oleophobic filter through a neutralization water delivery pump, the bottom of the filter is provided with a water discharge port for discharging filter materials, the water discharge port is communicated with an oleophilic and hydrophobic primary membrane separator, the bottom outlet of the primary membrane separator is communicated with a primary heavy oil collector connected with a heavy oil tank, the top outlet of the primary membrane separator is communicated with a primary light oil collector connected with a light oil tank, the side water outlet of the primary membrane separator is communicated with an ultrasonic emulsion breaker provided with an ultrasonic generator at the top, the water outlet of the ultrasonic emulsion breaker is provided with an emulsion breaking water circulating pump capable of returning and delivering a part of water, and the emulsion breaking water circulating pump is respectively communicated with a backflow hole, the bottom outlet of the secondary membrane separator is connected with a secondary heavy oil collector connected with a heavy oil tank, the top outlet of the secondary membrane separator is communicated with a secondary light oil collector connected with a light oil tank, and the side water outlet of the secondary membrane separator is communicated with a purified water buffer tank.
And hydrophilic and oleophobic fiber filter material balls are filled in the filter.
The filtering precision of the hydrophilic and oleophobic fiber filtering material ball is 2-5 mu m.
The first-stage membrane separator and the second-stage membrane separator are internally provided with columnar oleophylic and hydrophobic membranes.
The number of the columnar oleophylic and hydrophobic membranes arranged in the primary membrane separator and the secondary membrane separator is 1-16.
The inner parts of the first-stage membrane separator and the second-stage membrane separator are provided with columnar oleophylic and hydrophobic membranes which are uniformly distributed.
The first-stage light oil collector, the first-stage heavy oil collector, the second-stage light oil collector and the second-stage heavy oil collector are all provided with viewing windows.
The water outlet of the purified water buffer tank is provided with a purified water circulating pump which is communicated with the top of the filter.
The solvent in the acid liquor tank is hydrochloric acid, and the concentration of the solution is 0.1-1 mol/L; the solvent in the lye tank is sodium hydroxide or sodium bicarbonate, and the concentration of the solution is 0.1-1 mol/L.
The raw water in the raw water tank has the operation temperature of 1-80 ℃ and the operation pressure of 0.20-0.60 MPaG.
Compared with the prior art the utility model discloses following beneficial effect has: the utility model adopts the two-stage membrane separation system, and the light oil with the density less than that of water floats to the light oil collector at the upper part of the separator through the primary membrane separator and the secondary membrane separator, and sinks the light oil with the density more than that of water to the heavy oil collector at the lower part of the separator, so that the fluctuation of the oil content in the raw water can be greatly reduced before the ultrasonic separation is carried out, and the effect of oil-water separation can be improved; before oil-water separation, the raw water is pretreated by a filter, a large amount of emulsified oil droplets are filtered after pretreatment, and the rest emulsified oil droplets are removed after treatment by an ultrasonic emulsion breaker, an ultrasonic generator and an emulsion breaking water circulating pump, so that the separation effect of the emulsified oil is good; the ultrasonic emulsion breaker, the ultrasonic generator and the emulsion breaking water circulating pump are arranged between the primary membrane separator and the secondary membrane separator, so that the load of an ultrasonic system can be reduced, the emulsion breaking efficiency and the operation stability of the ultrasonic system are improved, and the oil-water separation effect of the device is better; the utility model discloses a device area is little, can directly make sled dress equipment, is applicable to old factory transformation and new factory extension.
Further, the hydrophilic oleophobic fibre filter material ball hydrophilic oleophobic effectual, 2 ~ 5 mu m's filter fineness makes the oil droplet of small particle diameter filtered before carrying out oil water separation, thereby can not flow in subsequent oil water separating system and be difficult to by the separation, improved the utility model discloses an oil water separating effect.
Furthermore, the uniformly distributed columnar oleophylic and hydrophobic membranes can enable the primary membrane separator and the secondary membrane separator to be better oleophylic and hydrophobic, and better separate and discharge light oil and heavy oil.
Furthermore, the window can be convenient for operating personnel to inspect the interface of profit in the knockout drum to adjust the aperture of the discharge valve of light oil/heavy oil, improved the simple operation nature of device.
Furthermore, the purified water in the purified water buffer tank can enter the filter through the purified water circulating pump, so that the filter is washed, and the normal operation of the filter is facilitated.
Drawings
Fig. 1 is an overall structure diagram of the present invention.
In the figure: 1. a raw water tank; 2. a raw water neutralizer; 3. a filter; 4. a primary membrane separator; 5. an ultrasonic emulsion breaker; 6. an ultrasonic generator; 7. a secondary membrane separator; 8. a light oil tank; 9. a purified water buffer tank; 10. a heavy oil tank; 11. an acid liquor tank; 12. an alkali liquor tank; 13. a raw water delivery pump; 14. a neutralization water delivery pump; 15. a demulsifying water circulating pump; 16. a purified water circulating pump; 17. a first-stage light oil collector; 18 first-stage heavy oil collector; 19. a second-stage light oil collector; 20. a second-stage heavy oil collector.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific embodiments:
as shown in fig. 1, in the present invention, a raw water tank 1, a raw water neutralizer 2, a filter 3, an acid liquor tank 11, an alkali liquor tank 12, a raw water delivery pump 13, a neutralization water delivery pump 14, and a purified water circulation pump 16 constitute a pretreatment system; the primary membrane separator 4, the secondary membrane separator 7, the primary light oil collector 17, the primary heavy oil collector 18, the secondary light oil collector 19, the secondary heavy oil collector 20, the light oil tank 8, the purified water buffer tank 9 and the heavy oil tank 10 form a membrane separation system; the ultrasonic demulsifying device 5, the ultrasonic generator 6 and the demulsifying water circulating pump 15 form an ultrasonic separation system. Wherein, a raw water delivery pump 13 is arranged at the water outlet of a raw water tank 1 for storing raw water to be treated, the raw water delivery pump 13 is communicated with a raw water neutralizer 2, the raw water delivery pump 13 can deliver the raw water in the raw water tank 1 to the raw water neutralizer 2, an acid liquid tank 11 and an alkali liquid tank 12 are arranged at the top of the raw water neutralizer 2, a hydrochloric acid solution and a sodium hydroxide solution with the concentration of 0.1-1mol/L are respectively arranged in the acid liquid tank 11 and the alkali liquid tank 12 for adjusting the pH value of the raw water, a neutralization water delivery pump 14 is arranged at the water outlet of the raw water neutralizer 2, the neutralization water delivery pump 14 is communicated with a filter 3 filled with hydrophilic oleophobic fiber filter balls, in order to filter oil beads with small particle size in advance and improve the oil-water separation effect, the filtration precision of the hydrophilic oleophobic fiber filter balls is preferably 2-5 μm, the filtration precision adopted in the embodiment is 3 μm, the neutralization water delivery pump 14 can deliver the liquid in the raw water neutralizer 2 to the filter 3, the bottom of the filter 3 is provided with a water outlet for discharging filter material intercepted matters, the top of the filter 3 is provided with a discharge hole for discharging filter materials, the discharge hole at the top of the filter 3 is communicated with a water inlet of the primary membrane separator 4, the primary membrane separator 4 is internally provided with a columnar oleophylic hydrophobic membrane, the total filtering area of the columnar oleophylic hydrophobic membrane can be selected according to the oil content of raw water, the size of a single columnar hydrophobic membrane is determined according to the height and the diameter of the primary membrane separator, the number of the columnar hydrophobic membranes in the primary membrane separator 4 is preferably 1-16, the number of the columnar hydrophobic membranes in the embodiment is 10, in order to ensure that the oleophylic hydrophobic effect is better, the columnar hydrophobic membranes are uniformly distributed, the bottom outlet of the primary membrane separator 4 is communicated with a primary heavy oil collector 18 connected with a heavy oil tank 10, the top outlet of the primary membrane separator 4 is communicated with a primary light oil collector, the water outlet of the side part of the first-stage membrane separator 4 is communicated with an ultrasonic emulsion breaker 5 with an ultrasonic generator 6 arranged at the top, a demulsifying water circulating pump 15 which can reflux a part of water and send a part of water out is arranged at the water outlet of the ultrasonic emulsion breaker, the demulsifying water circulating pump 15 is respectively communicated with a reflux hole arranged on the ultrasonic emulsion breaker 5 and a second-stage membrane separator 7, the total filtering area of the columnar oleophylic hydrophobic membranes can be selected according to the oil content of raw water, the size of a single columnar hydrophobic membrane is determined according to the height and the diameter of the second-stage membrane separator, the number of the columnar hydrophobic membranes in the second-stage membrane separator 7 is preferably 1-16, the number of the columnar hydrophobic membranes in the embodiment is 10, in order to ensure that the oleophylic and hydrophobic effects are better, the columnar hydrophobic membranes are uniformly distributed, the outlet at the bottom of the second-stage membrane separator 7, the outlet of the top is communicated with a second-stage light oil collector 19 connected with a light oil tank 8, the water outlet of the side part is communicated with a purified water buffer tank 9, a purified water circulating pump 16 is arranged at the water outlet of the purified water buffer tank 9, and the purified water circulating pump 16 is communicated with the top of the filter 3.
The working principle of the utility model is as follows: oily raw water which is simply separated by a sedimentation method or a centrifugal method is stored in a raw water tank 1, the temperature of the raw water is 1-80 ℃, the operation pressure is 0.20-0.60MPaG, the oil content is less than or equal to 7000mg/L, and the raw water is sent into a raw water neutralizer 2 by a raw water delivery pump 13; in the raw water neutralizer 2, the pH of the raw water is adjusted to about 7 by adding 0.1mol/L hydrochloric acid (from an acid liquid tank 11) or 0.1mol/L sodium hydroxide solution (from an alkali liquid tank 12), and then the neutralized raw water is sent to the bottom of the filter 3 filled with the hydrophilic oleophobic fiber filter material balls by a neutralization water transfer pump 14; in the filter 3, oil-containing suspended matters and part of oil are intercepted by a fiber filter material, and water enters the middle part of the primary membrane separator 4 through the top of the filter 3; when the pressure difference of the filter is increased to 0.2MPa, a purified water circulating pump 16 is started, purified water is used for back washing the fiber filter material, and back washing water is sent to a sedimentation tank or a centrifugal machine to separate solid particles such as suspended matters and the like in the fiber filter material; the primary membrane separator 4 is internally provided with uniformly distributed columnar oleophylic hydrophobic membranes, under the separation action of the membranes, water without dispersed oil and suspended oil penetrates through the columnar membranes and enters the ultrasonic emulsion breaker 5 from a water outlet of the primary membrane separator 4, the dispersed oil and the suspended oil are gathered and grown on the outer surfaces of the membranes, light oil with the density smaller than that of the water floats upwards into a primary light oil collector 17 at the upper part of the primary membrane separator 4, and light oil with the density larger than that of the water sinks into a heavy oil collector 18 at the lower part of the separator; adjusting the opening degree of outlet valves of the first-stage light oil collector 17 and the first-stage heavy oil collector 18 according to the layering degree of oil and water in the first-stage light oil collector 17 and the first-stage heavy oil collector 18 to realize the separation of non-emulsified oil and water, wherein the light oil obtained by separation enters the light oil tank 8, and the heavy oil enters the heavy oil tank 10; the primary separation water entering the ultrasonic emulsion breaker 5 realizes the emulsion breaking process under the action of the ultrasonic wave generated by the ultrasonic generator 6; the demulsified water is pressurized by a demulsifying water circulating pump 15 and then is sent to the middle part of a secondary membrane separator 7, and the staying time of the demulsifying water in the ultrasonic demulsifying device 5 is controlled by adjusting the opening degree of an adjusting valve on a return pipeline of the demulsifying water circulating pump 15; the secondary membrane separator 7 is provided with uniformly distributed columnar oleophylic hydrophobic membranes, under the separation action of the membranes, water penetrates through the columnar membranes and enters the purified water buffer tank 9, light oil enters the light oil tank 8 through the secondary light oil separating oil collector 19, heavy oil enters the heavy oil tank 10 through the secondary heavy oil collecting oil collector 20, and thus, the dispersed oil, the suspended oil and the emulsified oil in the raw water are separated from the water.
The applicable temperature of the raw water of the utility model is 1-80 ℃, and the operation pressure is 0.20-0.60 MPaG; the oil content of the inlet water of the raw water is less than or equal to 10000mg/L, and the oil content of the outlet water is less than or equal to 50 mg/L.
Claims (10)
1. An oil-water separation device, which is characterized in that: the device comprises a raw water tank (1) and a raw water neutralizer (2) which is communicated with the raw water tank through a raw water delivery pump (13) and is provided with an acid liquid tank (11) and an alkali liquid tank (12) at the top, wherein the raw water neutralizer (2) is communicated with a filter (3) provided with hydrophilic and oleophobic properties through a neutralization water delivery pump (14), the bottom of the filter (3) is provided with a water discharge port used for discharging filter material intercepted matters, the top of the filter (3) is provided with a discharge port used for discharging filter materials and communicated with a primary membrane separator (4) provided with oleophilic and hydrophobic properties, the bottom outlet of the primary membrane separator (4) is communicated with a primary heavy oil collector (18) connected with a heavy oil tank (10), the top outlet is communicated with a primary light oil collector (17) connected with a light oil tank (8), the side water outlet is communicated with an ultrasonic demulsification device (5) provided with an ultrasonic generator (6) at the top, and the water outlet of the ultrasonic demulsification device (5), A demulsifying water circulating pump (15) for delivering part of water, wherein the demulsifying water circulating pump (15) is respectively communicated with a backflow hole arranged on the ultrasonic demulsifying device (5) and an oleophylic and hydrophobic secondary membrane separator (7), the bottom outlet of the secondary membrane separator (7) is connected with a secondary heavy oil collector (20) connected with a heavy oil tank (10), the top outlet is communicated with a secondary light oil collector (19) connected with a light oil tank (8), and the side water outlet is communicated with a purified water buffer tank (9).
2. The oil-water separator according to claim 1, wherein: and hydrophilic and oleophobic fiber filter material balls are filled in the filter (3).
3. The oil-water separator according to claim 2, wherein: the filtering precision of the hydrophilic and oleophobic fiber filtering material ball is 2-5 mu m.
4. The oil-water separator according to claim 1, wherein: the primary membrane separator (4) and the secondary membrane separator (7) are internally provided with a columnar oleophylic hydrophobic membrane.
5. The oil-water separator according to claim 4, wherein: the number of the columnar oleophylic and hydrophobic membranes arranged in the primary membrane separator (4) and the secondary membrane separator (7) is 1-16.
6. The oil-water separator according to claim 4 or 5, wherein: the columnar oleophylic and hydrophobic membranes arranged in the primary membrane separator (4) and the secondary membrane separator (7) are uniformly distributed.
7. The oil-water separator according to claim 1, wherein: the primary light oil collector (17), the primary heavy oil collector (18), the secondary light oil collector (19) and the secondary heavy oil collector (20) are provided with windows.
8. The oil-water separator according to claim 1, wherein: a purified water circulating pump (16) is arranged at the water outlet of the purified water buffer tank (9), and the purified water circulating pump (16) is communicated with the top of the filter (3).
9. The oil-water separator according to claim 1, wherein: the solvent in the acid liquor tank (11) is hydrochloric acid, and the concentration of the solution is 0.1-1 mol/L; the solvent in the lye tank (12) is sodium hydroxide or sodium bicarbonate, and the concentration of the solution is 0.1-1 mol/L.
10. The oil-water separator according to claim 1, wherein: the raw water in the raw water tank has the operation temperature of 1-80 ℃ and the operation pressure of 0.20-0.60 MPaG.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921831709.0U CN210885656U (en) | 2019-10-29 | 2019-10-29 | Oil-water separation device |
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| CN201921831709.0U CN210885656U (en) | 2019-10-29 | 2019-10-29 | Oil-water separation device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111871004A (en) * | 2020-07-31 | 2020-11-03 | 深圳职业技术学院 | Oil-water emulsion separation equipment |
| CN112062216A (en) * | 2020-09-17 | 2020-12-11 | 华东理工大学 | Demulsification method and device based on double-emulsion internal circulation flow of fiber heterojunction |
| CN114605015A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气股份有限公司 | Method for treating oil refining processing sewage |
| CN114890559A (en) * | 2022-04-06 | 2022-08-12 | 苏州科锐德节能环境科技有限公司 | Low-power consumption modified material pure physical high-efficiency oil-water separation device |
| CN114890559B (en) * | 2022-04-06 | 2024-05-31 | 苏州科锐德节能环境科技有限公司 | Low-power consumption modified material pure physical high-efficiency oil-water separation device |
-
2019
- 2019-10-29 CN CN201921831709.0U patent/CN210885656U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111871004A (en) * | 2020-07-31 | 2020-11-03 | 深圳职业技术学院 | Oil-water emulsion separation equipment |
| CN112062216A (en) * | 2020-09-17 | 2020-12-11 | 华东理工大学 | Demulsification method and device based on double-emulsion internal circulation flow of fiber heterojunction |
| CN114605015A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气股份有限公司 | Method for treating oil refining processing sewage |
| CN114890559A (en) * | 2022-04-06 | 2022-08-12 | 苏州科锐德节能环境科技有限公司 | Low-power consumption modified material pure physical high-efficiency oil-water separation device |
| CN114890559B (en) * | 2022-04-06 | 2024-05-31 | 苏州科锐德节能环境科技有限公司 | Low-power consumption modified material pure physical high-efficiency oil-water separation device |
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