CN212998799U - Oil purification membrane filtration system - Google Patents
Oil purification membrane filtration system Download PDFInfo
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- CN212998799U CN212998799U CN202020896167.1U CN202020896167U CN212998799U CN 212998799 U CN212998799 U CN 212998799U CN 202020896167 U CN202020896167 U CN 202020896167U CN 212998799 U CN212998799 U CN 212998799U
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Abstract
The utility model belongs to the technical field of petrochemical industry and environmental protection, in particular to an oil purification membrane filtration system, which comprises a primary sedimentation tank, a coarse filtration device, an oil purification membrane component unit and an oil production tank which are communicated in sequence; the oil product purification membrane component unit comprises a plurality of oleophylic and hydrophobic membrane components which are connected in parallel; the oleophylic and hydrophobic membrane component comprises an oil inlet, an oil production port and a concentrated oil outlet; the oil inlet is respectively communicated with the coarse filtering device and the backwash liquid collecting device; the oil production port is respectively communicated with the gas circuit cleaning unit, the oil circuit cleaning unit and the oil production tank. The utility model discloses the technique is low to current filter core filter fineness, and the aperture is great, and the oil can not reach equipment use standard after once filtering and provides a filter fineness height, and the membrane filtration system and the technology of the disposable completion of normal atmospheric temperature dehydration edulcoration. The system has the advantages of short flow, low energy consumption, high automation degree, small occupied area and easy popularization in the industry.
Description
Technical Field
The utility model belongs to the technical field of petrochemical and environmental protection, concretely relates to oil purification membrane filtration system.
Background
The lubricating oil is a lubricating agent in modern industry, is 'blood' of industrial equipment and mainly plays roles in lubrication, cooling, rust prevention, cleaning, sealing, buffering and the like. In the using process of the lubricating oil, impurities such as moisture, dust, fibers and metal chips enter along with the operation, poor sealing and the like of equipment, so that the pollution degree of the lubricating oil is increased, and the using effect is influenced.
The lubricating oil sales volume of China is about 500 million tons every year, and the lubricating oil sales volume is mainly applied to the fields of industrial equipment, motor vehicles and the like. For industrial equipment in-use oil: traditional online oil purifier is the glass fiber filter core mostly, and filter fineness is low, can only hold back great particle diameter impurity, can not the desorption moisture. Therefore, the phenomenon often occurs, the physical and chemical properties of the lubricating oil in industrial equipment are not changed, water and impurities exceed standards, so that oil is frequently changed, and the cost of enterprises is increased. According to statistics, 70% of faults in a hydraulic system of industrial equipment are caused by pollution of hydraulic oil and over-standard pollution degree. In recent years, the operating concepts of energy conservation, consumption reduction, cost reduction and efficiency improvement are accepted by more and more industrial enterprises, and the oil purification also saves the cost and increases the benefit for more and more enterprises. The waste lubricating oil treatment process comprises the following steps: distillation-clay refining process. The process needs heating at more than 100 ℃, evaporating water, and adsorbing and filtering impurities by using argil; the process consumes about 65 degrees of electricity per ton of oil by heating and evaporating water, about 60kg of argil per ton of oil, has high energy consumption, takes the argil with saturated adsorption as solid dangerous waste, has expensive disposal cost, and requires about 300 yuan for treating one ton of waste oil. Filtering with a traditional oil filter, heating and evaporating to about 100 ℃, and removing water; then remove impurity through oil filter repeated cycle many times, the in-process needs frequently to change the filter core, and the operating efficiency is low, and the oil quality is relatively poor after filtering.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art, provide an oil purification membrane filtration system.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
an oil product purification membrane filtration system comprises a primary sedimentation tank, a coarse filtration device, an oil product purification membrane component unit and an oil production tank which are sequentially communicated; the oil product purification membrane component unit comprises a plurality of oleophylic and hydrophobic membrane components which are connected in parallel; the oleophylic and hydrophobic membrane component comprises an oil inlet, an oil production port and a concentrated oil outlet; the oil inlet is respectively communicated with the coarse filtering device and the backwash liquid collecting device; the oil production port is respectively communicated with the gas circuit cleaning unit, the oil circuit cleaning unit and the oil production tank.
The thick oil outlet is communicated with the thick oil return branch pipeline; a plurality of the thick oil return branch pipelines are communicated with the primary sedimentation tank through a thick oil return main pipeline; and a thick oil return valve is arranged on the thick oil return main pipeline.
And a pump front valve, a working pump, a pressure gauge and a pipeline heater are sequentially arranged on an oil inlet pipeline connecting the primary sedimentation tank and the coarse filtering device.
The gas circuit cleaning unit comprises a fan and a gas backwashing pipeline; and a gas control valve and a gas pressure gauge are arranged on the gas backwashing pipeline.
The oil path cleaning unit comprises a backwashing pipeline communicated with the oil production tank; and a backwashing valve, a backwashing flow meter, a backwashing pressure gauge and a backwashing pump are arranged on the backwashing pipeline.
The oil production port is communicated with the oil production branch pipe; the plurality of oil production branch pipes are communicated with the oil production tank through an oil production main pipe; the oil production main pipe is provided with an oil production electromagnetic flowmeter and an oil production valve.
The backwash liquid collecting device is communicated with a sewage discharge pipeline; the sewage discharge pipeline is communicated with the oil inlet through a plurality of sewage discharge branch pipelines; a main sewer valve is arranged on the sewer pipeline; and a branch pipe blowdown valve is arranged on the blowdown branch pipe.
And a pump rear valve is arranged on a connecting pipeline between the coarse filtering device and the oil inlet.
The oil purifying membrane aperture of the oleophylic and hydrophobic membrane component is 0.05-5 microns.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an oil purification membrane filtration system holds back the precision height, and area is little, easy operation, and the energy consumption is low. The membrane technology has short system flow, belongs to physical interception and does not change the physicochemical property of the lubricating oil.
The oil product purification membrane system used by the utility model can remove water and impurities in oil at one time; the energy consumption for treating one ton of oil is about 20 degrees; aiming at the waste (old) lubricating oil, the oil treated by the oil product purification membrane filtration system can be directly degraded for use; aiming at the oil consumption of industrial equipment, an oil product purification membrane filtration system can be adopted to carry out on-line or off-line filtration on the oil consumption of the equipment, and the filtered oil product is directly used for equipment operation, so that the oil product replacement period is prolonged.
The utility model discloses do not use carclazyte, do not have the emission of useless carclazyte, practiced thrift the useless expense of handling of danger, it is little to the environmental impact.
The utility model discloses an oil purifying membrane, after the membrane pollutes and blocks up, accessible oil circuit cleaning unit and gas circuit cleaning unit carry out processes such as backwash, aeration and resume the effect, and the membrane module can repeat, membrane long service life. The utility model discloses a physics filtration technique does not add the medicament, can not bring pollution and potential safety hazard for industrial equipment's in-use oil, can not change filter medium's physicochemical property.
The oil purification membrane used by the utility model has the advantages of selectable pore diameter of 0.05-5 microns, high interception precision and capability of reaching NAS 5-level standard after hydraulic oil purification.
The utility model discloses an oil purification membrane both can hold back impurity under normal atmospheric temperature state, can get rid of moisture again.
The utility model discloses be equipped with backwash liquid recovery system, useless lubricating oil is as dangerous wastes material, can not discharge wantonly. The utility model discloses retrieve the backwash liquid, concentrate and deal with the refilter, filter the liquid and get into the clean oil case, realize the minimizing of waste oil, improved resource utilization.
Drawings
FIG. 1 is a schematic view of the overall structure of the oil purifying membrane filtration system of the present invention;
in the figure: 1. a primary sedimentation tank; 2. a primary settling tank discharge valve; 3. a pre-pump valve; 4. an oil inlet pipeline; 5. a working pump; 6. A pressure gauge; 7. a pipe heater; 8. a coarse filtration device; 9. a concentrated oil return branch pipeline; 10. an oil production branch pipe; 11. an oil product purification membrane module; 12. a pump rear valve; 13. a branch pipe blowdown valve; 14. a sewage draining pipeline; 15. A main sewer valve; 16. a backwash liquid collection device; 17. an electromagnetic flow meter for producing oil; 18. a main oil production pipe; 19. A gas backwash pipeline; 20. a gas control valve; 21. a gas pressure gauge; 22. a fan; 23. an oil production valve; 24. A backwash valve; 25. backwashing the flow meter; 26. backwashing the pipeline; 27. backwashing the pressure gauge; 28. a backwash pump; 29. An oil production tank; 30. a thick oil return valve; 31. and a concentrated oil return main pipeline.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
Fig. 1 shows an oil product purification membrane filtration system, which comprises a primary sedimentation tank 1, a coarse filtration device 8, an oil product purification membrane component unit and an oil production tank 29 which are communicated in sequence; a primary sedimentation tank discharge valve 2 is arranged at the bottom of the primary sedimentation tank; and a pump front valve 3, a working pump 5, a pressure gauge 6 and a pipeline heater 7 are sequentially arranged on an oil inlet pipeline 4 connecting the primary sedimentation tank and the coarse filtering device. The oil product purification membrane component 11 unit comprises a plurality of oleophylic and hydrophobic membrane components connected in parallel; the oleophylic and hydrophobic membrane component comprises an oil inlet, an oil production port and a concentrated oil outlet; the oil inlet is respectively communicated with the coarse filtering device 8 and the backwash liquid collecting device 16; the oil production port is respectively communicated with the air path cleaning unit, the oil path cleaning unit and the oil production tank 29. The gas path cleaning unit comprises a fan 22 and a gas backwashing pipeline 19; the gas backwashing pipeline is provided with a gas control valve 20 and a gas pressure gauge 21. The oil path cleaning unit comprises a backwashing pipeline 26 communicated with the oil production tank; the backwashing pipeline is provided with a backwashing valve 24, a backwashing flow meter 25, a backwashing pressure gauge 27 and a backwashing pump 28. The thick oil outlet is communicated with the thick oil return branch pipeline 9; a plurality of the thick oil return branch pipelines are communicated with the primary sedimentation tank 1 through a thick oil return main pipeline 31; and a thick oil return valve 30 is arranged on the thick oil return main pipeline. The oil production port is communicated with the oil production branch pipe 10; the oil production branch pipes are communicated with an oil production tank through an oil production main pipe 18; the oil production main pipe is provided with an oil production electromagnetic flowmeter 17 and an oil production valve 23. The backwash liquid collecting device is communicated with a sewage discharge pipeline; the sewage discharge pipeline is communicated with the oil inlet through a plurality of sewage discharge branch pipelines; a main blowdown valve 15 is arranged on the blowdown pipeline 14; and a branch pipe blowdown valve 13 is arranged on the blowdown branch pipe. And a pump rear valve 12 is arranged on a connecting pipeline between the coarse filtering device and the oil inlet. The membrane aperture of the oleophylic and hydrophobic membrane component is 0.05-5 microns.
The oil purification membrane filtration system is realized through the following technical scheme. The utility model discloses a super oleophylic hydrophobic hollow fiber oil purifying membrane, oil purifying membrane filtration system and technology include membrane filtration technology and membrane cleaning process. In the membrane filtration process, waste (dirty) lubricating oil is primarily precipitated through a primary sedimentation tank, and then the waste (dirty) lubricating oil is pumped into a pipeline heater and a coarse filter by a working pump and finally enters an oil inlet at the bottom of an oil product purification membrane component. The filtered clean lubricating oil enters the oil production tank from the oil production port at the upper end of the membrane component, water and impurities are intercepted by the membrane, and the oil is purified. In order to prevent membrane blockage and pollution, the membrane cleaning process is started after the operation is carried out for a period of time, clean air or lubricating oil is pumped into the interior of the oil product purification membrane component from an oil production port under certain pressure, then pollutants attached to the surface of membrane fibers fall off along with the washing of the gas or the lubricating oil, and are discharged out of the interior of the membrane component through a discharge pipeline, and the membrane filtering effect is recovered.
The oil purifying membrane of the oleophylic and hydrophobic membrane component is a super-oleophylic and hydrophobic hollow fiber composite membrane and is formed by compounding a polymer composite material and a Polyester (PET) fiber weaving material, the precision filter layer is arranged on the outer side of the hollow fiber, a PET weaving tube reinforcing material is arranged in the precision filter layer to improve the membrane strength and prolong the service life, the membrane pore size is selectable within the range of 0.05-5 microns, and the membrane pore size is selected according to the requirement of oil filtering precision. The oil purification membrane can be air permeable and oil permeable, and the membrane system backwashing process can adopt filtered clean oil backwashing and gas backwashing.
When the oil product purifying membrane is used in filtering lubricating oil, the technological process includes the steps of filtering lubricating oil at 40 deg.c, pressure of 0.05-0.2MPa and membrane flux of 2-30L/m2H; when filtering the light oil and oily chemical, the pressure is 0.05-0.2MPa and the membrane flux is 50-100L/m2H; the water content of the stock solution is within the range of 300-2000ppm, and can reach below 100ppm after membrane filtration.
The oil purification membrane is a pressure driving membrane, under the pressure driving, the waste (dirty) lubricating oil is pumped into the membrane component through the pump, clean oil flows out from the inside of the hollow fiber through the membrane aperture, and moisture, impurities, particle fibers and the like in the waste (dirty) lubricating oil are intercepted on the surface of the oil purification membrane, so that the purification of the oil is finally realized.
The oil purification membrane is operated by adopting constant pressure or constant flow control, and can be set to be under PLC logic control to realize automatic cleaning and oil production. Operating for 4-8h, performing a primary aeration backwashing process, wherein the pressure is 0.02-0.05Mpa, the aeration backwashing time is 0.5-1min, and the sewage is discharged for 1-2 min; the operation is carried out for 8 to 16 hours, and the oil backwashing process is carried out once under the pressure of 0.05 to 0.1 MPa. Oil backwashing for 0.5-1min, and draining for 1-2 min.
The pipeline heating is mainly used in the low-temperature period in winter, the lubricating oil is high in viscosity and poor in fluidity and is heated to about 20-40 ℃, the fluidity of the lubricating oil is enhanced, and the filtering efficiency is improved.
The oil purification membrane technology can also be used in the fields of filtration of other oils, fuel oil (kerosene, diesel oil and the like), oily chemicals, rolling oil, tank cleaning waste water of gas stations and the like.
The specific implementation scheme is as follows, taking 46# antiwear lubricating oil as an example: when the oil purifying membrane filtering system operates at constant pressure, the oil purifying membrane system is manually operated: after the waste (old) lubricating oil is firstly precipitated by the primary sedimentation tank 1, the front pump valve 3, the rear pump valve 12, the oil production valve 23, the thick oil return valve 30 and other valves are opened and kept in a closed state. The pipeline heater 7 is started (in winter), then the working pump 5 is started, and the waste (old) lubricating oil at the upper part of the primary sedimentation tank is pumped into the oil product purification process. Waste (old) lubricating oil enters an oil inlet at the bottom of an oil purification membrane component 11 through a pipeline heater 7 and a coarse filter 8 and finally enters the membrane component; adjusting the opening degree of a thick oil return valve 30 and a pump front valve 3 to keep the working pressure at 0.1 MPa; under the driving of pressure, clean lubricating oil is discharged from an oil production port at the upper part of the membrane component and enters an oil production tank 29 through the oil production branch pipe 10 and the oil production main pipe 18. The oil production electromagnetic flow meter 17 can meter the instantaneous and cumulative total oil production. The oil purification membrane module 11 can select 1 module or a plurality of modules according to the treatment scale.
When the oil product purification membrane is used for filtering constant flow operation, the oil production flow is 3L/m2H sets up, and the instantaneous flow of oil production flowmeter 17 keeps invariable, adjusts oil feed pressure through pump front valve 2 and the 28 opennesses of thick oil backward flow valve, guarantees the oil production oil mass.
When the oil purification membrane filtration system is used for membrane cleaning, and the oil purification membrane technology is operated for 4 hours, in order to prevent membrane blockage and pollution, the equipment is used for carrying out a gas backwashing process, and the gas control valve 20, the branch pipe blowdown valve 13 and the main pipe blowdown valve 15 are opened, and other valves are kept in a closed state; the air blower 22 is started, the air pressure is adjusted to be about 0.02Mpa by observing the air pressure gauge 21, air enters the membrane module through the air backwashing pipeline 19, the oil production main pipe 18 and the oil production branch pipe 10, the air permeates through membrane holes to scour off pollutants on the surface of the membrane, after the air backwashing is carried out for 1min, the air blower 22 is closed, the sewage is discharged for 1min, the branch pipe blow-off valve 13 is closed, the main pipe blow-off valve 15 and the air adjusting valve 20 are closed. And (5) entering a filtration oil production process, and repeatedly carrying out gas backwashing once after running for 4 hours. And then entering an oil production process, operating for 12 hours, performing an oil backwashing process, starting a backwashing valve 24, a branch pipe blowdown valve 13 and a main pipe blowdown valve 15, and keeping other valves in a closed state. And (2) starting a backwashing pump 28, enabling clean lubricating oil to enter the inside of the oil product purification membrane fiber through a backwashing pipeline 26, the oil production main pipe 18 and the oil production branch pipe 10, enabling the clean oil to permeate through membrane pores to flush and drop pollutants on the surface of the membrane, enabling the pressure to be about 0.1Mpa and the backwashing time to be 20s, closing the backwashing pump 28 after backwashing is finished, then closing a backwashing valve 24, and after 1min of sewage discharge, closing the main pipe sewage discharge valve 15 and the branch pipe sewage discharge valve 13. Entering the oil production process of the next cycle.
The oil product purification membrane filtration system and the process are applied to process equipment, when the oil product is filtered by using oil, a primary sedimentation tank is cancelled, an oil inlet pipeline 4 and an oil production pipeline 18 are simultaneously put into an oil tank of the industrial equipment, and the oil production process is operated: and only the front pump valve 3, the rear pump valve 12 and the oil production valve 23 are opened, and other valves are kept in a closed state until the oil in the oil tank is purified to be qualified.
Because the oil tanks using oil are all small, the process equipment does not carry out an online cleaning process during oil filtering, after the purification of each oil tank is finished, the membrane module carries out an offline gas backwashing process, and the backwashing step refers to the backwashing process.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (9)
1. An oil product purification membrane filtration system is characterized by comprising a primary sedimentation tank, a coarse filtration device, an oil product purification membrane component unit and an oil production tank which are sequentially communicated; the oil product purification membrane component unit comprises a plurality of oleophylic and hydrophobic membrane components which are connected in parallel; the oleophylic and hydrophobic membrane component comprises an oil inlet, an oil production port and a concentrated oil outlet; the oil inlet is respectively communicated with the coarse filtering device and the backwash liquid collecting device; the oil production port is respectively communicated with the gas circuit cleaning unit, the oil circuit cleaning unit and the oil production tank.
2. The oil purification membrane filtration system of claim 1, wherein the concentrate outlet is in communication via a concentrate return branch line; a plurality of the thick oil return branch pipelines are communicated with the primary sedimentation tank through a thick oil return main pipeline; and a thick oil return valve is arranged on the thick oil return main pipeline.
3. The oil purification membrane filtration system of claim 1, wherein a pre-pump valve, a working pump, a pressure gauge and a pipe heater are sequentially arranged on an oil inlet pipeline connecting the primary sedimentation tank and the coarse filtration device.
4. The oil purification membrane filtration system of claim 1, wherein the gas path cleaning unit comprises a blower and a gas backwash pipeline; and a gas control valve and a gas pressure gauge are arranged on the gas backwashing pipeline.
5. The oil purification membrane filtration system of claim 1, wherein the oil line cleaning unit comprises a backwash pipeline in communication with the oil production tank; and a backwashing valve, a backwashing flow meter, a backwashing pressure gauge and a backwashing pump are arranged on the backwashing pipeline.
6. The oil purification membrane filtration system of claim 1, wherein the oil production port is in communication with an oil production branch pipe; the plurality of oil production branch pipes are communicated with the oil production tank through an oil production main pipe; the oil production main pipe is provided with an oil production electromagnetic flowmeter and an oil production valve.
7. The oil purification membrane filtration system of claim 1, wherein the backwash liquid collection device is in communication with a blowdown line; the sewage discharge pipeline is communicated with the oil inlet through a plurality of sewage discharge branch pipelines; a main sewer valve is arranged on the sewer pipeline; and a branch pipe blowdown valve is arranged on the blowdown branch pipe.
8. The oil purification membrane filtration system of claim 1, wherein a post-pump valve is disposed on a connection line between the coarse filtration device and the oil inlet.
9. The oil purification membrane filtration system of claim 1, wherein the oil purification membrane pore size of the oleophilic hydrophobic membrane assembly is 0.05-5 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020896167.1U CN212998799U (en) | 2020-05-25 | 2020-05-25 | Oil purification membrane filtration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020896167.1U CN212998799U (en) | 2020-05-25 | 2020-05-25 | Oil purification membrane filtration system |
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| CN212998799U true CN212998799U (en) | 2021-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405274A (en) * | 2021-12-28 | 2022-04-29 | 国能南京电力试验研究有限公司 | Mineral turbine oil atom separation membrane filter element filtering system and method for power plant |
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2020
- 2020-05-25 CN CN202020896167.1U patent/CN212998799U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405274A (en) * | 2021-12-28 | 2022-04-29 | 国能南京电力试验研究有限公司 | Mineral turbine oil atom separation membrane filter element filtering system and method for power plant |
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