CN113897219B - Non-uniform pulse electric field coupling coalescent particle bed lubricating oil demulsification and dehydration device - Google Patents
Non-uniform pulse electric field coupling coalescent particle bed lubricating oil demulsification and dehydration device Download PDFInfo
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- CN113897219B CN113897219B CN202111437970.4A CN202111437970A CN113897219B CN 113897219 B CN113897219 B CN 113897219B CN 202111437970 A CN202111437970 A CN 202111437970A CN 113897219 B CN113897219 B CN 113897219B
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- 239000002245 particle Substances 0.000 title claims abstract description 171
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 70
- 230000005684 electric field Effects 0.000 title claims abstract description 57
- 230000018044 dehydration Effects 0.000 title claims abstract description 56
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 56
- 230000008878 coupling Effects 0.000 title claims abstract description 30
- 238000010168 coupling process Methods 0.000 title claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 30
- 239000003921 oil Substances 0.000 claims abstract description 94
- 239000000839 emulsion Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 208000005156 Dehydration Diseases 0.000 claims description 53
- 239000000919 ceramic Substances 0.000 claims description 46
- 238000004581 coalescence Methods 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 239000007772 electrode material Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/10—Lubricating oil
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- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a lubricating oil demulsification and dehydration device for a non-uniform pulse electric field coupling coalescent particle bed, which comprises the following components: the oil inlet pump (1), the filter (2), the oil heater (3), the non-uniform pulse electric field and the coalesced particle bed coupling demulsifier (4), wherein the non-uniform pulse electric field and the coalesced particle bed coupling demulsifier (4) comprise: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of a coalescent particle bed, a coalescent particle bed (4-6), a lower baffle plate (4-7) of the coalescent particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9). Aiming at the W/O type lubricating oil with larger water content, the invention realizes the rapid and efficient demulsification and dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the agglomerated particle bed, and has the advantages of high efficiency, low energy consumption, good treatment effect, less consumption of electrode materials and obvious advantages.
Description
Technical Field
The patent belongs to the technical field of lubricating oil demulsification and dehydration, and relates to a lubricating oil demulsification and dehydration device adopting non-uniform pulse electric field and coalescent particle bed coupling.
Background
The dehydration and purification of the lubricating oil have important practical significance and economic value in the aspects of ensuring the safe operation of equipment, reducing the oil consumption, prolonging the service life of the oil and the like. At present, when the water content of the refrigerator oil is low and the dehydration requirement is high, the vacuum heating separation process is adopted for treatment, so that the effect is good. However, the vacuum heating separation process has the characteristics of long time consumption and high energy consumption, and for occasions with larger water content and larger treatment capacity, such as a thin oil sealed gas tank, an air compressor lubricating oil station and the like, the traditional process of vacuum heating separation and the like is adopted, so that the effect is general, and meanwhile, the treatment cost is higher due to long time consumption and high energy consumption.
For dehydration and purification of W/O type (water-in-oil) lubricating oil with complex structure and large water content, the technology which is commonly used at present is an electric demulsification technology based on crude oil pre-dehydration, and the technology of pulse electric field demulsification is adopted for treatment, and the electrode structure form of the pulse electric field is mainly divided into two types at present: the parallel plate electrode structure or the coaxial cylindrical electrode structure is mainly square, is convenient to connect in series and parallel, and has relatively high space requirement when connecting in series and parallel in the structure form of the coaxial cylindrical electrode. For the current popular parallel plate electrode structure or coaxial cylindrical electrode structure, the electrode manufacturing is large in material area and high in cost, the space distance is limited, the lubricating oil mobility requirement between the electrodes is guaranteed, the distance between the electrodes cannot be too small, the pulse voltage required for obtaining a pulse electric field with corresponding field intensity to guarantee the demulsification and dehydration effects of the lubricating oil with high water content is high, and is usually 10-20 kV, so that the energy consumption is high, and the method is always an important problem facing demulsification of the current pulse electric field.
Based on the characteristics and problems of the electrode structure of the current common electric demulsifier, two or more operation units are coupled and integrated on the basis of a pulse electric field, so that the demulsification and dehydration efficiency is maintained or improved while the dependence on field intensity is reduced, and the method is becoming an important direction for the development of high-water-content lubricating oil demulsification and dehydration technology.
Disclosure of Invention
The invention aims at: aiming at the problems of long time consumption, high energy consumption, poor treatment effect and the like in the traditional processes such as the prior vacuum heating separation and the like of the W/O type lubricating oil demulsification dehydration with complex structure and large water content, the electrode structure material consumption of the conventional electric demulsifier is large, the pulse voltage is high and the energy consumption is large, and based on the problems, the device for demulsification dehydration of the lubricating oil of the non-uniform pulse electric field coupling coalescent particle bed is provided.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence.
Further, the non-uniform pulsed electric field and the agglomerated particle bed coupled demulsifier comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8).
Further, the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle size of 7.5-10 mm account for 5-10%, the ceramic balls with the particle size of 5-7.5 mm account for 10-15%, the ceramic balls with the particle size of 3-5 mm account for 25-35%, and the ceramic balls with the particle size of 2.5-3 mm account for 40-60%.
Further, the ceramic ball has a surface roughness ofR a 1.6 to 6.3.
Further, the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and is vertically inserted into the agglomerated particle bed (4-6) through a demulsifier sealing cover (4-3) and a mounting hole of an agglomerated particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the anode and the cathode of a pulse power supply.
Further, the parallel cylindrical electrode is an insulated electrode, and the thickness of the insulating layer is not more than 1mm.
Further, the pulse voltage output by the pulse power supply is square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 0.5 kV-2 kV.
Further, the pulse duty ratio of the pulse voltage is 0.25-0.5, and the frequency is 50-2000 Hz.
Further, the baffle plate (4-5) on the agglomerated particle bed is provided with a mounting hole for vertical insertion of the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.25-0.5 mm.
Further, the baffle plate (4-7) under the agglomerated particle bed is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.25-0.5 mm.
Further, the residence time of the lubricating oil in the agglomerated particle bed (4-6) which is required to be subjected to demulsification and dehydration treatment is 120-180 seconds.
Further, the temperature of the lubricating oil heated by the oil heater (3) is 50-75 ℃.
Further, the water content of the lubricating oil which needs to be subjected to demulsification and dehydration treatment is 1-30% (mass percent).
Further, the lubricating oil which needs to be demulsified and dehydrated has a kinematic viscosity at 40 ℃ of less than 85mm 2 /s。
The invention has the following advantages.
(1) Aiming at W/O type lubricating oil with complex structure and larger water content, a non-uniform pulse electric field and a lubricating oil demulsification dehydration device coupled with a coalescent particle bed are adopted to carry out demulsification dehydration of the lubricating oil, the device adopts a parallel cylindrical electrode to form a non-uniform pulse electric field in the coalescent particle bed, the non-uniform pulse electric field is utilized to increase the amplitude and collision frequency of emulsified oil drops in the coalescent particle bed, the rapid rupture of an oil-water interfacial film is realized, the coalescent particle bed is utilized to realize rapid coalescence and sedimentation of the drops, and the demulsification dehydration efficiency is improved through effective cooperation between the two, so that the rapid and efficient demulsification dehydration of the lubricating oil is realized.
(2) The device adopts the parallel cylindrical electrode to form a non-uniform pulse electric field in the agglomerated particle bed, and compared with the common parallel plate electrode structure or coaxial cylindrical electrode structure, the electrode material consumption is greatly reduced, and the cost advantage is obvious; meanwhile, the parallel cylindrical electrode group of the device can form non-uniform pulse electric fields with different non-uniform coefficients by adjusting the interval between the parallel cylindrical electrodes, and can select proper non-uniform coefficients according to specific processing working conditions and processing requirements, thereby reducing the field intensity requirements of lubricating oil demulsification and dehydration, effectively reducing the energy consumption of a pulse power supply and avoiding the electric dispersion phenomenon which is easy to occur at high field intensity.
(3) The device adopts the ceramic ball particles with different particle sizes to be uniformly mixed to form the coalescent particle bed, and the gaps among the particles among the bed layers are uneven in size, so that compared with the particle bed layer with single particle size, the device can effectively increase the collision probability and the collision strength of emulsion oil drops on the surface of the coalescent particles, and improve the demulsification and dehydration efficiency of lubricating oil; meanwhile, the ceramic ball particles with higher roughness are filled in the coalescing particle bed of the device, the contact angle of the ceramic ball surface to water can be further reduced due to the higher surface roughness, and the surface hydrophilicity of the ceramic ball is improved, so that the coalescing effect of emulsified oil drops is improved, and the demulsification and dehydration efficiency of lubricating oil is further improved.
(4) The device adopts the lubricating oil demulsification dehydration device with the non-uniform pulse electric field and the coalescent particle bed for demulsification dehydration of the lubricating oil, realizes the rapid and efficient demulsification dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the coalescent particle bed, reduces the requirements on the electric field intensity and the coalescent particle size compared with the traditional demulsification of the electric field or coalescent particle bed, can adopt coalescent particles with larger particle size to form the coalescent particle bed, effectively reduces the blocking loss of the bed, simultaneously avoids the blockage of the bed, and has obvious advantages.
(5) Compared with demulsification and dehydration technologies such as vacuum heating separation, electric field demulsification and the like, the device provided by the invention has the advantages of high demulsification and dehydration efficiency, short time consumption, low energy consumption, good treatment effect, less electrode material consumption, and obvious overall technical and economic advantages when used for demulsification and dehydration of W/O type lubricating oil with complex structure and large water content.
Drawings
FIG. 1 is a schematic diagram of an apparatus of the present invention, comprising: the oil inlet pump (1), the filter (2), the oil heater (3), the non-uniform pulse electric field and the coalesced particle bed are coupled with the demulsifier (4).
Fig. 2 is a schematic diagram of a non-uniform pulsed electric field and agglomerated particle bed coupled demulsifier (4), comprising: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of a coalescent particle bed, a coalescent particle bed (4-6), a lower baffle plate (4-7) of the coalescent particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9).
FIG. 3 is a schematic view showing the arrangement of the electrodes of the parallel cylindrical electrode group (4-2).
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in the figure, the demulsification and dehydration device for the lubricating oil of the non-uniform pulse electric field coupling coalesced particle bed comprises the following steps:
1) A non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence.
2) In the step 1), the non-uniform pulsed electric field and the coalesced particle bed coupling demulsifier (4) comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8).
3) In the step 2), the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle sizes of 7.5-10 mm account for 5-10%, the ceramic balls with the particle sizes of 5-7.5 mm account for 10-15%, the ceramic balls with the particle sizes of 3-5 mm account for 25-35%, and the ceramic balls with the particle sizes of 2.5-3 mm account for 40-60%; in addition, the surface roughness of the ceramic balls isR a 1.6 to 6.3.
4) In the step 2), the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and the parallel cylindrical electrodes are vertically inserted into the agglomerated particle bed (4-6) through mounting holes of the demulsifier sealing cover (4-3) and the agglomerated particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the anode and the cathode of the pulse power supply; meanwhile, the parallel cylindrical electrodes are insulated electrodes, and the thickness of an insulating layer is not more than 1mm.
5) In the step 4), the pulse voltage output by the pulse power supply is square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 0.5 kV-2 kV; the pulse duty ratio of the pulse voltage is 0.25 to 0.5, and the frequency is 50Hz to 2000Hz.
6) In the step 2), the baffle plate (4-5) on the agglomerated particle bed is provided with the mounting holes for vertical insertion of the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.25-0.5 mm.
7) In the step 2), the baffle plate (4-7) under the agglomerated particle bed is provided with round small holes with the same size and uniformly spread over the whole baffle plate, wherein the diameter of the round small holes is 0.25-0.5 mm.
8) In the step 2), the residence time of the lubricating oil to be demulsified and dehydrated in the agglomerated particle bed (4-6) is 120 seconds to 180 seconds.
9) In the step 1), the temperature of the lubricating oil heated by the oil heater (3) is 50-75 ℃.
10 In the step 1), the water content of the lubricating oil which is required to be subjected to demulsification and dehydration treatment is 1-30% (mass percent), and the kinematic viscosity at 40 ℃ is less than 85mm 2 /s。
Aiming at W/O type lubricating oil with complex structure and large water content, the device provided by the invention realizes the rapid and efficient demulsification and dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the agglomerated particle bed, and has the advantages of high demulsification and dehydration efficiency, short time consumption, low energy consumption, good treatment effect, less consumption of electrode materials, and obvious overall technical and economic advantages.
First embodiment:
1) A non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence.
2) In the step 1), the non-uniform pulsed electric field and the coalesced particle bed coupling demulsifier (4) comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8).
3) In the step 2), the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle sizes of 7.5-10 mm account for 5%, the ceramic balls with the particle sizes of 5-7.5 mm account for 10%, the ceramic balls with the particle sizes of 3-5 mm account for 25%, and the ceramic balls with the particle sizes of 2.5-3 mm account for 60%; in addition, the surface roughness of the ceramic balls isR a 1.6.
4) In the step 2), the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and the parallel cylindrical electrodes are vertically inserted into the agglomerated particle bed (4-6) through mounting holes of the demulsifier sealing cover (4-3) and the agglomerated particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the anode and the cathode of the pulse power supply; meanwhile, the parallel cylindrical electrode is an insulated electrode, and the thickness of an insulating layer is 0.5mm.
5) In the step 4), the pulse voltage output by the pulse power supply is square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 0.5kV; the pulse duty ratio of the pulse voltage was 0.5 and the frequency was 2000Hz.
6) In the step 2), the baffle plate (4-5) on the agglomerated particle bed is provided with a mounting hole for vertically inserting the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.25mm.
7) In the step 2), the baffle plates (4-7) under the agglomerated particle bed are provided with round small holes with the same size and uniformly spread over the whole baffle plates, wherein the diameter of the round small holes is 0.25mm.
8) In the above step 2), the residence time of the lubricating oil to be subjected to the demulsification and dehydration treatment in the bed of agglomerated particles (4-6) was 180 seconds.
9) In the above step 1), the temperature of the lubricating oil heated by the oil heater (3) was 75 ℃.
10 In the above step 1), the water content of the lubricating oil to be subjected to the demulsification and dehydration treatment was 30% by mass, and the kinematic viscosity at 40℃was 84.5mm 2 /s。
Aiming at W/O type lubricating oil with complex structure and large water content, the device provided by the invention realizes the rapid and efficient demulsification and dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the agglomerated particle bed, and has the advantages of high demulsification and dehydration efficiency, short time consumption, low energy consumption, good treatment effect, less consumption of electrode materials, and obvious overall technical and economic advantages.
Second embodiment:
1) A non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence.
2) In the step 1), the non-uniform pulsed electric field and the coalesced particle bed coupling demulsifier (4) comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8).
3) In the step 2), the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle sizes of 7.5-10 mm account for 7.5%, the ceramic balls with the particle sizes of 5-7.5 mm account for 12.5%, the ceramic balls with the particle sizes of 3-5 mm account for 30%, and the ceramic balls with the particle sizes of 2.5-3 mm account for 50%; in addition, the surface roughness of the ceramic balls isR a 3.2.
4) In the step 2), the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and the parallel cylindrical electrodes are vertically inserted into the agglomerated particle bed (4-6) through mounting holes of the demulsifier sealing cover (4-3) and the agglomerated particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the anode and the cathode of the pulse power supply; meanwhile, the parallel cylindrical electrode is an insulated electrode, and the thickness of the insulating layer is 0.75mm.
5) In the step 4), the pulse voltage output by the pulse power supply is square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 1kV; the pulse duty ratio of the pulse voltage was 0.35 and the frequency was 1000Hz.
6) In the step 2), the baffle plate (4-5) on the agglomerated particle bed is provided with a mounting hole for vertically inserting the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.35mm.
7) In the step 2), the baffle plates (4-7) under the agglomerated particle bed are provided with round small holes with the same size and uniformly spread over the whole baffle plates, wherein the diameter of the round small holes is 0.35mm.
8) In the above step 2), the residence time of the lubricating oil to be subjected to the demulsification and dehydration treatment in the bed of agglomerated particles (4-6) was 150 seconds.
9) In the above step 1), the temperature of the lubricating oil heated by the oil heater (3) was 60 ℃.
10 In the above step 1), the water content of the lubricating oil to be subjected to the demulsification and dehydration treatment was 15% by mass and the kinematic viscosity at 40℃was 75mm 2 /s。
Aiming at W/O type lubricating oil with complex structure and large water content, the device provided by the invention realizes the rapid and efficient demulsification and dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the agglomerated particle bed, and has the advantages of high demulsification and dehydration efficiency, short time consumption, low energy consumption, good treatment effect, less consumption of electrode materials, and obvious overall technical and economic advantages.
Third embodiment:
1) A non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence.
2) In the step 1), the non-uniform pulsed electric field and the coalesced particle bed coupling demulsifier (4) comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8).
3) In the step 2), the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle sizes of 7.5-10 mm account for 10%, the ceramic balls with the particle sizes of 5-7.5 mm account for 15%, the ceramic balls with the particle sizes of 3-5 mm account for 35%, and the ceramic balls with the particle sizes of 2.5-3 mm account for 40%; in addition, the surface roughness of the ceramic balls isR a 6.3.
4) In the step 2), the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and the parallel cylindrical electrodes are vertically inserted into the agglomerated particle bed (4-6) through mounting holes of the demulsifier sealing cover (4-3) and the agglomerated particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the anode and the cathode of the pulse power supply; meanwhile, the parallel cylindrical electrode is an insulated electrode, and the thickness of an insulating layer is 1mm.
5) In the step 4), the pulse voltage output by the pulse power supply is square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 2kV; the pulse duty ratio of the pulse voltage was 0.25 and the frequency was 50Hz.
6) In the step 2), the baffle plate (4-5) on the agglomerated particle bed is provided with a mounting hole for vertically inserting the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the diameter of the round small holes is 0.5mm.
7) In the step 2), the baffle plates (4-7) under the agglomerated particle bed are provided with round small holes with the same size and uniformly spread over the whole baffle plates, wherein the diameter of the round small holes is 0.5mm.
8) In the above step 2), the residence time of the lubricating oil to be subjected to the demulsification and dehydration treatment in the bed of agglomerated particles (4-6) was 120 seconds.
9) In the above step 1), the temperature of the lubricating oil heated by the oil heater (3) was 50 ℃.
10 Above-mentioned)In step 1), the water content of the lubricating oil to be subjected to demulsification and dehydration treatment was 1% by mass, and the kinematic viscosity thereof at 40℃was 70mm 2 /s。
Aiming at W/O type lubricating oil with complex structure and large water content, the device provided by the invention realizes the rapid and efficient demulsification and dehydration of the lubricating oil through the effective cooperation between the non-uniform pulse electric field and the agglomerated particle bed, and has the advantages of high demulsification and dehydration efficiency, short time consumption, low energy consumption, good treatment effect, less consumption of electrode materials, and obvious overall technical and economic advantages.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (4)
1. A non-uniform pulsed electric field coupling coalesced particle bed lubricating oil demulsification and dehydration device comprises: oil feed pump (1), filter (2), oil heater (3), inhomogeneous pulse electric field and coalescence particle bed coupling emulsion breaker (4), its characterized in that: the oil inlet pump (1) is connected with lubricating oil which needs to be demulsified and dehydrated through an oil pipeline, and then is connected with the filter (2), the oil heater (3) and the non-uniform pulse electric field and coalescent particle bed coupling demulsifier (4) through the oil pipeline in sequence;
the non-uniform pulsed electric field and coalesced particle bed coupled demulsifier (4) comprises: the emulsion breaker comprises an oil inlet valve (4-1), a parallel cylindrical electrode group (4-2), an emulsion breaker sealing cover (4-3), an oil outlet valve (4-4), an upper baffle plate (4-5) of an agglomerated particle bed, an agglomerated particle bed (4-6), a lower baffle plate (4-7) of the agglomerated particle bed, an emulsion breaker shell (4-8) and an outlet valve (4-9), wherein the oil inlet valve (4-1) is arranged at the lower part of the lower baffle plate (4-7) of the agglomerated particle bed and is connected with an oil heater (3) through an oil pipeline, the oil outlet valve (4-4) is arranged at the upper part of the upper baffle plate (4-5) of the agglomerated particle bed, and the outlet valve (4-9) is arranged at the lower part of the emulsion breaker shell (4-8);
the coalescing particle bed (4-6) is formed by uniformly mixing hydrophilic oleophobic ceramic balls with different particle sizes and then filling the mixture, wherein the particle size range of the ceramic balls is 2.5-10 mm, the ceramic balls with the particle size of 7.5-10 mm account for 5-10%, the ceramic balls with the particle size of 5-7.5 mm account for 10-15%, the ceramic balls with the particle size of 3-5 mm account for 25-35%, and the ceramic balls with the particle size of 2.5-3 mm account for 40-60%;
the ceramic ball has the surface roughness ofR a 1.6 to 6.3;
the parallel cylindrical electrode group (4-2) consists of a plurality of parallel cylindrical electrodes, and is vertically inserted into the coalescing particle bed (4-6) through a demulsifier sealing cover (4-3) and mounting holes of a coalescing particle bed upper baffle plate (4-5), wherein each parallel cylindrical electrode is arranged in a rectangular shape on the cross section of the parallel cylindrical electrode group (4-2), and the parallel cylindrical electrodes adjacent to each other in the longitudinal direction and the transverse direction of the cross section of the parallel cylindrical electrode group (4-2) are respectively connected with the positive electrode and the negative electrode of the pulse power supply;
the parallel cylindrical electrode is an insulated electrode, and the thickness of an insulating layer of the parallel cylindrical electrode is not more than 1mm;
the pulse power supply outputs square wave pulse, wherein the initial voltage of the pulse voltage is 0, and the peak voltage is 0.5 kV-2 kV;
the pulse duty ratio of the pulse voltage is 0.25-0.5, and the frequency is 50-2000 Hz;
the baffle plate (4-5) on the agglomerated particle bed is provided with a mounting hole for vertical insertion of the parallel cylindrical electrode group (4-2), and the rest part is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the aperture of the round small holes is 0.25-0.5 mm;
the baffle plate (4-7) under the agglomerated particle bed is provided with round small holes with the same size and uniformly distributed over the whole baffle plate, wherein the aperture of the round small holes is 0.25-0.5 mm;
the residence time of the lubricating oil in the agglomerated particle bed (4-6) which is required to be subjected to demulsification and dehydration treatment is 120-180 seconds.
2. The non-uniform pulsed electric field coupled coalescing particle bed lubricating oil demulsification and dehydration device according to claim 1, wherein the device is characterized in that: the temperature of the lubricating oil heated by the oil heater (3) is 50-75 ℃.
3. The non-uniform pulsed electric field coupled coalescing particle bed lubricating oil demulsification and dehydration device according to claim 1, wherein the device is characterized in that: the lubricating oil which needs to be demulsified and dehydrated has the water content of 1-30% by mass.
4. The non-uniform pulsed electric field coupled coalescing particle bed lubricating oil demulsification and dehydration device according to claim 1, wherein the device is characterized in that: the lubricating oil which needs to be demulsified and dehydrated has a kinematic viscosity at 40 ℃ of less than 85mm 2 /s。
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| CN112980500A (en) * | 2021-03-12 | 2021-06-18 | 重庆工商大学 | Lubricating oil demulsification and dehydration method by coupling pulse electric field and fly ash |
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| CN111349457A (en) * | 2020-04-10 | 2020-06-30 | 重庆工商大学 | High-voltage pulse electric field-cyclone centrifugal field combined lubricating oil demulsification dehydration device |
| CN112980500A (en) * | 2021-03-12 | 2021-06-18 | 重庆工商大学 | Lubricating oil demulsification and dehydration method by coupling pulse electric field and fly ash |
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