CN113307337B - Oil-in-water emulsion breaking and separating device for electric field coupling conductive particle bed layer - Google Patents
Oil-in-water emulsion breaking and separating device for electric field coupling conductive particle bed layer Download PDFInfo
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- CN113307337B CN113307337B CN202110674982.2A CN202110674982A CN113307337B CN 113307337 B CN113307337 B CN 113307337B CN 202110674982 A CN202110674982 A CN 202110674982A CN 113307337 B CN113307337 B CN 113307337B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/48—Devices for applying magnetic or electric fields
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses an oil-in-water emulsion breaking and separating device for an electric field coupling conductive particle bed layer, which comprises a shell 1, a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5, a porous plate 6, a liquid inlet 7, a power supply 8, a baffle plate 9, an oil outlet 10, an upper baffle plate 11, a lower baffle plate 12, a water outlet 13 and wheels 14, and is characterized in that: three unit parts of buffering, demulsification and separation are formed inside the device. The buffer unit is a cavity at the lower left part of the shell 1; the demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6; the separation unit is positioned at the right side of the buffer unit and the demulsification unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle. The oil-in-water emulsion is subjected to mixing, demulsification and separation sequentially through a buffering unit, a demulsification unit and a separation unit. The invention can improve the separation efficiency of the oil-in-water emulsion, effectively recover oil and water resources, and has obvious technical and economic advantages.
Description
Technical Field
The patent belongs to the technical field of oil-containing wastewater electric field demulsification separation, and relates to a device for demulsification separation of an oil-in-water emulsion by a coupling electric field and a conductive particle bed layer.
Background
The emulsified oily wastewater with high oil-containing wastewater content, high treatment difficulty and stable property is a key and difficult point of research in the field of oil-water separation. With the continuous development of society and economy, a large amount of emulsified oily wastewater in industry and human life is discharged into the environment, so that the ecological environment is seriously polluted, a large amount of oil and clean water resources are wasted, and the sustainable development of national economy and society is not facilitated. Therefore, the method has important significance and value for demulsifying and separating the oil-in-water emulsion formed by emulsifying the oily wastewater and recovering oil and clean water resources.
Compared with the traditional chemical, biological and physical demulsification methods, the electric field demulsification separation technology of the oil-in-water emulsion has certain advantages because of the characteristics of no medicament addition, simple equipment and process, only electric energy consumption for demulsification, greenness, no secondary pollution, simple and convenient operation, small occupied area and the like. Accordingly, demulsification and separation of oil-in-water emulsions by electric fields has received extensive attention and research in recent years. However, the conventional single-form electric field demulsification equipment has low demulsification voltage, so that oil drops in the emulsion are subjected to small stress, and the oil drops have poor movement and coalescence effects. Although a single form of electric field can realize demulsification of an oil-in-water emulsion, the demulsification and separation efficiency is low, and the requirements of actual oil-water separation cannot be well met.
Therefore, the development and application of the high-efficiency and composite type electric demulsification and separation device for the oil-water emulsion becomes a key and breakthrough for improving the electric demulsification and separation efficiency of oil and water. The electric field is coupled with other demulsification means to jointly act on the oil-in-water emulsion to realize the high-efficiency demulsification and separation of the oil-in-water emulsion, and the electric demulsification and separation method also becomes the mainstream direction for the development of the electric demulsification and separation of the oil-in-water emulsion. Therefore, the development and application of the corresponding oil-in-water emulsion breaking separation equipment with electric field coupling other breaking methods also become important contents and components of research in the field of oily wastewater treatment.
Disclosure of Invention
The invention aims to: aiming at the problems of poor demulsification effect and low oil-water separation efficiency in a single-form electric demulsification and separation process and single-form electric demulsification and separation equipment for oil-in-water emulsions, the device for demulsification and separation of the oil-in-water emulsions by the electric field coupling conductive particle bed layer is provided. The action of the electric field on oil drops is increased by the actions of electrophoresis, polarization, coalescence of the coupling electric field, capture, extrusion, adsorption, filtration and the like of the particle bed layer through the non-uniformly distributed electric field formed in the bed layer gaps by the conductive particle bed layer and the columnar electrodes. The mutual motion contact among oil drops and the coalescence action of an electric field on the oil drops are further enhanced, the oil drops of the oil-in-water emulsion are driven to be rapidly and effectively contacted, coalesced and combined into large oil drops, and the demulsification effect of the electric field on the oil-in-water emulsion is enhanced. And then, the emulsion after demulsification is subjected to enhanced oil-water separation by a separation unit, and finally the purpose of improving the electric demulsification separation efficiency of the oil-in-water emulsion is achieved.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an electric field coupling conductive particles bed's emulsion breaking separator of oil in water emulsion, includes casing 1, apron 2, conductive particles bed 3, porous sleeve 4, column electrode 5, perforated plate 6, inlet 7, power 8, baffle 9, oil-out 10, goes up baffle 11, lower baffle 12, delivery port 13, wheel 14, its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit.
Further, the buffer unit is mainly a chamber at the lower left of the housing 1.
Furthermore, the demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6, wherein the columnar electrode 5 is arranged in the porous sleeve 4 for installation and fixation, the lower end of the porous sleeve 4 is fixedly connected with the porous plate 6, and the upper end of the porous sleeve is fixedly connected with the cover plate 2.
Furthermore, the separation unit is positioned at the right side of the buffer unit and the emulsion breaking unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle.
Further, the shell 1 is of a cuboid structure, the length is 0.2 m-3.5 m, the width is 0.2 m-3.5 m, the height is 0.3 m-6.5 m, the thickness of the shell is 0.1-10 mm, the length-width ratio is 1-1.8, the length-height ratio is 0.3-1, and the material is iron or stainless steel.
Furthermore, 4 wheels are arranged on a support at the bottom of the shell 1 and are a movable type oil-in-water emulsion breaking and separating device.
Furthermore, the inner and outer walls of the shell 1, the inner and outer surfaces of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are coated with insulating coatings.
Further, the cover plate 2 and the porous plate 6 are square or rectangular insulating plates with holes, and are made of organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride.
Further, the length of the cover plate 2 and the porous plate 6 is 0.18-3.5 m, the width of the cover plate is 0.18-3.5 m, the length-width ratio of the cover plate is 1: 4-4: 1, the thickness of the cover plate is 1-25 mm, the diameter of a small through hole in the plate is 0.5-100 mm, the small holes are arranged in a rectangular mode, and the center distance between the front small hole and the rear small hole and the center distance between the left small hole and the right small hole are 2-120 mm.
Furthermore, the cover plate 2 is provided with 1-36 large through holes, the aperture is 5-150 mm, the center distance between the front and back large holes and the left and right large holes is 50-500 mm, and the large holes are arranged in a rectangle.
Furthermore, the perforated plate 6 is provided with 1-36 blind holes, the aperture is 5-150 mm, the depth of the blind holes is 0.5-18 mm, the center distance between two adjacent blind holes in the front and back direction and the left and right direction is 50-500 mm, and the blind holes are arranged in a rectangle.
Furthermore, the vertical distance between the bottom surface of the porous plate 6 and the bottom surface of the shell 1 is 0.05-1.5 m.
Further, the conductive particles are filled on a porous plate 6 in the shell 1 to form a conductive particle fixed bed layer 3, the characteristic size of the particles is 0.5-80 mm, the thickness of the bed layer is 1/3-5/6 of the height of the shell 1, and the porosity of the bed layer is 8.5% -43%.
Furthermore, the number of the porous sleeves 4 is 1-36, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 1/2-6/7 of the height of the shell 1, the outer diameter of the porous sleeves is 5-150 mm, the thickness of the porous sleeves is 0.5-20 mm, and the porous sleeves are made of organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride.
Furthermore, the surface of the porous sleeve 4 is provided with holes along the radial direction, the aperture is 0.5-15 mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 1.2-30 mm.
Further, porous sleeve 4 internally mounted have column electrode 5, column electrode height is 1.05~1.5 times of sleeve height, the electrode external diameter is 2~100 mm.
Further, the overhanging lengths of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are 30-500 mm, the nominal diameter is 8-65 mm, and the materials are iron and stainless steel.
Furthermore, the vertical distance between the centers of the liquid inlet 7 and the water outlet 13 and the bottom of the shell 1 is 1/4-3/4 of the installation height of the porous plate 6.
Further, the vertical distance between the center of the oil outlet 10 and the bottom of the shell 1 is 1/2-8/9 of the height of the shell.
Further, the baffle 9, the upper partition 11 and the lower partition 12 are square or rectangular flat plates made of stainless steel or iron.
Further, the length of the baffle 9, the length of the upper partition plate 11 and the length of the lower partition plate 12 are the same as the width of the shell 1, the thickness of the baffle is 0.5-25 mm, and the surfaces of the baffle are coated with insulating coatings.
Furthermore, the baffle 9 and the lower partition plate 12 are connected with the bottom surface, the front wall surface and the rear wall surface of the shell 1 in a welding mode, and the widths of the baffle 9 and the lower partition plate are 1/2-9/10 and 1/5-7/10 of the height of the shell 1 respectively.
Furthermore, the upper partition plate 11 is welded with the upper wall surface, the front wall surface and the rear wall surface of the shell 1, and the width is 3/10-14/15 of the height of the shell 1.
Further, the distance between the baffle 9, the upper partition 11 and the lower partition 12 and the right wall surface of the housing 1 is 1/5-1/2, 1/10-3/7 and 1/15-5/12 of the length of the housing 1, respectively, and the baffle is parallel to the left and right wall surfaces of the housing 1.
Further, the power supply 8 is a dc power supply, an ac power supply or a pulse power supply.
Furthermore, the liquid inlet flow of the oil-in-water emulsion of the device is 10L/h-15000L/h, and the treatment capacity is 0.24-360 m3/d。
The beneficial effects of the invention include the following aspects.
1) The invention discloses an oil-in-water emulsion breaking and separating device with an electric field coupled with a conductive particle bed layer, aiming at the problems of poor oil-in-water emulsion breaking effect and low oil-water separation efficiency of a single-form electric field, wherein a breaking unit in the device is coupled with the electric field and the coalescence effect of the particle bed layer on oil drops.
2) The device can regulate and control the distribution form and the field intensity of the electric field formed in the gaps of the particle bed layer by adopting the conductive particles with different particle sizes, and further can effectively control the coalescence action of the electric field on oil drops, thereby greatly accelerating and enhancing the coalescence process and effect of the electric field on the oil drops, and saving energy consumption while improving the oil-water separation efficiency.
3) In the device, the retention time of the emulsion in the electric field can be regulated and controlled by regulating the filling rate of the particle bed layer and the thickness of the particle bed layer, so that the regulation and control of the speed and the treatment capacity of the emulsion flowing through the bed layer can be realized. Therefore, the better treatment effect can be ensured, and the better treatment capacity can be achieved, so that the emulsion breaking effect and the oil-water separation efficiency of the emulsion are greatly improved, and the energy consumption is reduced.
4) In the device, after the oil-in-water emulsion passes through the demulsification unit, the oil-in-water emulsion enters the separation unit through the partition plate 9, and in the process that the emulsion passes through a flow passage formed by the partition plate 9, the upper partition plate 11 and the lower partition plate 12, oil drops and a water phase in the emulsion are continuously and further subjected to enhanced separation, so that the oil-water separation efficiency is further improved, and no additional energy consumption is increased.
5) The device integrates the buffer unit, the demulsification unit and the separation unit in the oil-in-water emulsion treatment process, efficiently and organically connects and fuses the three processes of the oil-in-water emulsion treatment, has the advantages of small occupied area, compact structure, low cost, mobility, simple and convenient operation, low energy consumption, high efficiency and the like, and has very obvious technical and economic advantages.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention, comprising: the device comprises a shell 1, a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5, a porous plate 6, a liquid inlet 7, a power supply 8, a baffle 9, an oil outlet 10, an upper baffle plate 11, a lower baffle plate 12, a water outlet 13 and wheels 14.
FIG. 2 is a cross-sectional view taken along line A-A of the device of the present invention.
FIG. 3 is a schematic view of a multi-well plate 6 in the apparatus of the present invention.
Fig. 4 is a schematic view of a porous sleeve 4 in the device of the present invention.
Fig. 5 is a schematic view of the cover plate 2 in the device of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in the figure, the present embodiment relates to an oil-in-water emulsion breaking and separating device with an electric field coupled conductive particle bed, which comprises the following steps: 1) the utility model provides an electric field coupling conductive particles bed's emulsion breaking separator of oil in water emulsion, includes casing 1, apron 2, conductive particles bed 3, porous sleeve 4, column electrode 5, perforated plate 6, inlet 7, power 8, baffle 9, oil-out 10, goes up baffle 11, lower baffle 12, delivery port 13, wheel 14, its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit. The buffer unit is mainly a chamber at the lower left of the housing 1. The demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6, wherein the columnar electrode 5 is arranged in the porous sleeve 4 for installation and fixation, the lower end of the porous sleeve 4 is fixedly connected with the porous plate 6, and the upper end of the porous sleeve is fixedly connected with the cover plate 2. The separation unit is positioned at the right side of the buffer unit and the demulsification unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle.
2) In the step 1), the shell 1 is of a cuboid structure, the length is 0.2 m-3.5 m, the width is 0.2 m-3.5 m, the height is 0.3 m-6.5 m, the thickness of the shell is 0.1-10 mm, the length-width ratio is 1-1.8, the length-height ratio is 0.3-1, and the materials are iron and stainless steel. The bottom support of the shell 1 is provided with 4 wheels which are a mobile oil-in-water emulsion breaking and separating device. The inner and outer walls of the shell 1, the liquid inlet 7, the oil outlet 10 and the outer surfaces of the water outlet 13 are coated with insulating coatings.
3) In the step 1), the cover plate 2 and the porous plate 6 are square or rectangular insulating plates with holes, and the materials are organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride. The length of the cover plate 2 and the porous plate 6 is 0.18-3.5 m, the width of the cover plate is 0.18-3.5 m, the length-width ratio of the cover plate to the porous plate is 1: 4-4: 1, the thickness of the cover plate is 1-25 mm, the diameter of a small through hole in the plate is 0.5-100 mm, the small holes are arranged in a rectangular mode, and the center distance between the front small hole and the rear small hole and the center distance between the left small hole and the right small hole are 2-120 mm. The cover plate 2 is provided with 1-36 large through holes, the aperture is 5-150 mm, the center distance between two adjacent large through holes in the front and back, the left and right are 50-500 mm, and the large holes are arranged in a rectangle. The perforated plate 6 is provided with 1-36 blind holes, the aperture is 5-150 mm, the depth of the blind holes is 0.5-18 mm, the center distance between two adjacent blind holes in the front and back direction and the left and right direction is 50-500 mm, and the blind holes are arranged in a rectangle. The vertical distance between the bottom surface of the porous plate 6 and the bottom surface of the shell 1 is 0.05-1.5 m.
4) In the step 1), the conductive particles are filled on the porous plate 6 in the shell 1 to form a conductive particle fixed bed layer 3, the characteristic size of the particles is 0.5-80 mm, the thickness of the bed layer is 1/3-5/6 of the height of the shell 1, and the porosity of the bed layer is 8.5% -43%.
5) In the step 1), the number of the porous sleeves 4 is 1-36, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 1/2-6/7 of the height of the shell 1, the outer diameter of the porous sleeves is 5-150 mm, the thickness of the porous sleeves is 0.5-20 mm, and the porous sleeves are made of organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride. The surface of the porous sleeve 4 is provided with holes along the radial direction, the aperture is 0.5-15 mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 1.2-30 mm. A columnar electrode 5 is arranged in the porous sleeve 4, the height of the columnar electrode is 1.05-1.5 times of the height of the sleeve, and the outer diameter of the electrode is 2-100 mm.
6) In the step 1), the overhanging lengths of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are 30-500 mm, the nominal diameter is 8-65 mm, and the materials are iron and stainless steel. The vertical distance between the centers of the liquid inlet 7 and the water outlet 13 and the bottom of the shell 1 is 1/4-3/4 of the installation height of the porous plate 6. The vertical distance from the center of the oil outlet 10 to the bottom of the shell 1 is 1/2-8/9 of the height of the shell.
7) In the step 1), the baffle 9, the upper partition 11 and the lower partition 12 are square or rectangular flat plates made of stainless steel or iron. The length of baffle 9, upper baffle 11, lower baffle 12 is the same with casing 1 width, and thickness 0.5~25mm, and the surface coating has insulating coating. The baffle 9 and the lower partition plate 12 are connected with the bottom surface, the front wall surface and the rear wall surface of the shell 1 in a welding mode, and the widths of the baffle 9 and the lower partition plate are 1/2-9/10 and 1/5-7/10 of the height of the shell 1 respectively. The upper partition plate 11 is welded to the upper wall surface, front wall surface and rear wall surface of the housing 1, and has a width of 3/10-14/15 of the height of the housing 1. The distances from the baffle 9, the upper partition plate 11 and the lower partition plate 12 to the right wall surface of the shell 1 are 1/5-1/2, 1/10-3/7 and 1/15-5/12 of the length of the shell 1 respectively, and the baffle 9, the upper partition plate 11 and the lower partition plate are parallel to the left wall surface and the right wall surface of the shell 1 respectively.
8) In the step 1), the power supply 8 is a direct current power supply, an alternating current power supply or a pulse power supply.
9) In the step 1), the liquid inlet flow rate of the oil-in-water emulsion is 10L/h-15000L/h, and the treatment capacity is 0.24-360 m3/d。
The device integrates the mixing, demulsifying and separating processes in the treatment of the oil-in-water emulsion, the contact and coalescence effects among oil drops are enhanced through the coupling electric field and the conductive particle bed layer in the demulsifying unit, and the oil-water separation of the emulsion after demulsification is further enhanced through the separating unit, so that the demulsifying effect of the emulsion and the oil-water separation efficiency are greatly improved. The device provided by the invention has the advantages of efficient and organic connection and fusion of the three unit processes, small floor area, compact structure, low cost, simplicity and convenience in operation, low energy consumption, high efficiency and the like, and the overall technical and economic advantages are very obvious.
The first embodiment: 1) the utility model provides an electric field coupling conductive particles bed's emulsion breaking separator of oil in water emulsion, includes casing 1, apron 2, conductive particles bed 3, porous sleeve 4, column electrode 5, perforated plate 6, inlet 7, power 8, baffle 9, oil-out 10, goes up baffle 11, lower baffle 12, delivery port 13, wheel 14, its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit. The buffer unit is mainly a chamber at the lower left of the housing 1. The demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6, wherein the columnar electrode 5 is arranged in the porous sleeve 4 for installation and fixation, the lower end of the porous sleeve 4 is fixedly connected with the porous plate 6, and the upper end of the porous sleeve is fixedly connected with the cover plate 2. The separation unit is positioned at the right side of the buffer unit and the demulsification unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle.
2) In the step 1), the shell 1 has a rectangular parallelepiped structure, a length of 1m, an aspect ratio of 1.667, a length-to-height ratio of 0.625, a thickness of 2mm, and is made of stainless steel. The bottom support of the shell 1 is provided with 4 wheels which are a mobile oil-in-water emulsion breaking and separating device. The inner and outer walls of the shell 1, the liquid inlet 7, the oil outlet 10 and the inner and outer surfaces of the water outlet 13 are coated with insulating coatings.
3) In the step 1), the cover plate 2 and the porous plate 6 are square insulating plates made of polytetrafluoroethylene, the side length is 0.58m, the thickness is 5mm, the diameter of the small through holes in the plates is 6mm, the small holes are arranged in a rectangle, and the center distance between the front and the back and the left and the right adjacent small holes is 20 mm. The cover plate 2 is provided with 4 large through holes with the aperture of 16mm, the center distance between the front and back large through holes and the left and right large through holes is 200mm, and the large holes are arranged in a rectangle. The perforated plate 6 is provided with 4 blind holes with the aperture of 16mm and the depth of 3mm, the center distance between two adjacent blind holes in the front and back, the left and the right is 200mm, and the blind holes are arranged in a rectangle. The bottom surface of the perforated plate 6 was vertically spaced from the bottom surface of the housing 1 by 0.35 m.
4) In the step 1), the conductive particles are filled on the porous plate 6 in the shell 1 to form the conductive particle fixed bed layer 3, the characteristic size of the particles is 10mm, the thickness of the bed layer is 5/8 of the height of the shell 1, and the porosity of the bed layer is 18.6%.
5) In the step 1), the number of the porous sleeves 4 is 4, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 3/4 of the height of the shell 1, the outer diameter of the porous sleeves is 14mm, the thickness of the porous sleeves is 2mm, and the porous sleeves are made of polytetrafluoroethylene. The surface of the porous sleeve 4 is provided with holes along the radial direction, the aperture is 3mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 8 mm. A columnar electrode 5 is arranged in the porous sleeve 4, the height of the columnar electrode is 1.1 times of the height of the sleeve, and the outer diameter of the electrode is 12 mm.
6) In the step 1), the overhanging lengths of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are 120mm, the nominal diameter is 24mm, and the materials are stainless steel. The vertical distance between the centers of the liquid inlet 7 and the water outlet 13 and the bottom of the shell 1 is 1/3 of the installation height of the porous plate 6. The center of the oil outlet 10 is vertically separated from the bottom of the shell 1 by 3/4 of the height of the shell.
7) In the step 1), the baffle 9, the upper partition plate 11 and the lower partition plate 12 are rectangular flat plates made of stainless steel. The length of the baffle 9, the upper partition plate 11 and the lower partition plate 12 is the same as the width of the shell 1, the thickness is 2mm, and the surfaces are coated with insulating coatings. The baffle 9 and the lower partition 12 are welded to the bottom surface and the front and rear wall surfaces of the casing 1, and have widths 4/5 and 2/5 corresponding to the height of the casing 1. The upper partition 11 is welded to the upper wall surface, front and rear wall surfaces of the casing 1, and has a width 4/5 of the height of the casing 1. The distance from the baffle plate 9, the upper partition plate 11 and the lower partition plate 12 to the right wall surface of the casing 1 is 2/5, 1/4 and 1/10 of the length of the casing 1, and the baffle plate and the left and right wall surfaces of the casing 1 are parallel to each other.
8) In the step 1), the power supply 8 is a pulse power supply.
9) In the step 1), the liquid inlet flow of the oil-in-water emulsion is 360L/h, and the treatment capacity is 8.64m3/d。
The device integrates the mixing, demulsifying and separating processes in the treatment of the oil-in-water emulsion, the contact and coalescence effects among oil drops are enhanced through the coupling electric field and the conductive particle bed layer in the demulsifying unit, and the oil-water separation of the emulsion after demulsification is further enhanced through the separating unit, so that the demulsifying effect of the emulsion and the oil-water separation efficiency are greatly improved. The device provided by the invention has the advantages of efficient and organic connection and fusion of the three unit processes, small floor area, compact structure, low cost, simplicity and convenience in operation, low energy consumption, high efficiency and the like, and the overall technical and economic advantages are very obvious.
Second embodiment: 1) the utility model provides an electric field coupling conductive particle bed's oil in water emulsion breakdown of emulsion separator, includes casing 1, apron 2, conductive particle bed 3, porous sleeve 4, column electrode 5, perforated plate 6, inlet 7, power 8, baffle 9, oil-out 10, goes up baffle 11, lower baffle 12, delivery port 13, wheel 14, its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit. The buffer unit is mainly a chamber at the lower left of the housing 1. The demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6, wherein the columnar electrode 5 is arranged in the porous sleeve 4 for installation and fixation, the lower end of the porous sleeve 4 is fixedly connected with the porous plate 6, and the upper end of the porous sleeve is fixedly connected with the cover plate 2. The separation unit is positioned at the right side of the buffer unit and the demulsification unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle.
2) In the step 1), the shell 1 is a rectangular parallelepiped structure, the length is 1.8m, the aspect ratio is 1.5, the length-to-height ratio is 0.64, the thickness of the shell is 3mm, and the material is stainless steel. The bottom support of the shell 1 is provided with 4 wheels which are a mobile oil-in-water emulsion breaking and separating device. The inner and outer walls of the shell 1, the liquid inlet 7, the oil outlet 10 and the outer surfaces of the water outlet 13 are coated with insulating coatings.
3) In the step 1), the cover plate 2 and the porous plate 6 are square insulating plates with openings, and are made of organic glass. The side length of the cover plate 2 and the porous plate 6 is 1.2m, the thickness is 15mm, the diameter of the small through hole on the plate is 10mm, the arrangement of the small holes is arranged according to a rectangle, and the center distance between the two adjacent small holes in the front, the back, the left and the right is 20 mm. The cover plate 2 is provided with 9 large through holes with the aperture of 25mm, the center distance between the front and back large through holes and the left and right large through holes is 300mm, and the large holes are arranged in a rectangle. The perforated plate 6 is provided with 9 blind holes with the aperture of 25mm and the depth of 10mm, the center distance between two adjacent blind holes in the front and back, the left and right sides is 300mm, and the blind holes are arranged in a rectangle. The bottom surface of the perforated plate 6 is vertically spaced from the bottom surface of the housing 1 by 0.4 m.
4) In the step 1), the conductive particles are filled on the porous plate 6 in the shell 1 to form the conductive particle fixed bed layer 3, the characteristic size of the particles is 15mm, the thickness of the bed layer is 5/7 of the height of the shell 1, and the porosity of the bed layer is 23.4%.
5) In the step 1), the number of the porous sleeves 4 is 9, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 11/14 of the height of the shell 1, the outer diameter of the porous sleeves is 24mm, the thickness of the porous sleeves is 3mm, and the porous sleeves are made of organic glass. The surface of the porous sleeve 4 is provided with holes along the radial direction, the aperture is 3mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 8 mm. A columnar electrode 5 is arranged in the porous sleeve 4, the height of the columnar electrode is 1.05 times of the height of the sleeve, and the outer diameter of the electrode is 20 mm.
6) In the step 1), the overhanging lengths of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are 200mm, the nominal diameter is 36mm, and the materials are stainless steel. The vertical distance between the centers of the liquid inlet 7 and the water outlet 13 and the bottom of the shell 1 is 1/2 of the installation height of the porous plate 6. The center of the oil outlet 10 is vertically spaced from the bottom of the housing 1 by 7/8 the height of the housing.
7) In the step 1), the baffle 9, the upper partition plate 11 and the lower partition plate 12 are rectangular flat plates made of stainless steel. The length of the baffle 9, the upper partition plate 11 and the lower partition plate 12 is the same as the width of the shell 1, the thickness is 2mm, and the surfaces of the baffle 9, the upper partition plate 11 and the lower partition plate are coated with insulating coatings. The baffle 9 and the lower partition 12 are welded to the bottom surface and the front and rear wall surfaces of the casing 1, and have widths 7/8 and 1/2 corresponding to the height of the casing 1. The upper partition 11 is welded to the upper wall surface, front and rear wall surfaces of the casing 1, and has a width 8/9 equal to the height of the casing 1. The distance from the baffle 9, the upper partition 11 and the lower partition 12 to the right wall surface of the casing 1 is 1/3, 2/9 and 1/9 of the length of the casing 1, respectively, and the baffle is kept parallel to the left and right wall surfaces of the casing 1, respectively.
8) In the step 1), the power supply 8 is an alternating current power supply.
9) In the step 1), the liquid inlet flow of the oil-in-water emulsion is 2880L/h, and the treatment capacity is 69.12m3/d。
The device integrates the mixing, demulsifying and separating processes in the treatment of the oil-in-water emulsion, the contact and coalescence effects among oil drops are enhanced through the coupling electric field and the conductive particle bed layer in the demulsifying unit, and the oil-water separation of the emulsion after demulsification is further enhanced through the separating unit, so that the demulsifying effect of the emulsion and the oil-water separation efficiency are greatly improved. The device provided by the invention has the advantages of efficient and organic connection and fusion of the three unit processes, small floor area, compact structure, low cost, simplicity and convenience in operation, low energy consumption, high efficiency and the like, and the overall technical and economic advantages are very obvious.
The third embodiment: 1) the utility model provides an electric field coupling conductive particle bed's oil in water emulsion breakdown of emulsion separator, includes casing 1, apron 2, conductive particle bed 3, porous sleeve 4, column electrode 5, perforated plate 6, inlet 7, power 8, baffle 9, oil-out 10, goes up baffle 11, lower baffle 12, delivery port 13, wheel 14, its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit. The buffer unit is mainly a chamber at the lower left of the housing 1. The demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate 2, a conductive particle bed layer 3, a porous sleeve 4, a columnar electrode 5 and a porous plate 6, wherein the columnar electrode 5 is arranged in the porous sleeve 4 for installation and fixation, the lower end of the porous sleeve 4 is fixedly connected with the porous plate 6, and the upper end of the porous sleeve is fixedly connected with the cover plate 2. The separation unit is positioned at the right side of the buffer unit and the demulsification unit and consists of a baffle 9, an upper partition plate 11, a lower partition plate 12 and a cavity of the baffle.
2) In the step 1), the shell 1 is a rectangular parallelepiped structure, the length is 2.4m, the aspect ratio is 1.33, the length-to-height ratio is 0.706, the thickness of the shell is 5mm, and the material is stainless steel. The bottom support of the shell 1 is provided with 4 wheels which are a mobile oil-in-water emulsion breaking and separating device. The inner and outer walls of the shell 1, the liquid inlet 7, the oil outlet 10 and the outer surfaces of the water outlet 13 are coated with insulating coatings.
3) In the step 1), the cover plate 2 and the porous plate 6 are square insulating plates with holes, and are made of polytetrafluoroethylene. The side length of the cover plate 2 and the porous plate 6 is 1.8m, the thickness is 25mm, the diameter of the small through hole on the plate is 20mm, the arrangement of the small holes is arranged according to a rectangle, and the center distance between the two adjacent small holes in the front, the back, the left and the right is 60 mm. The cover plate 2 is provided with 25 large through holes with the aperture of 40mm, the center distance between the front and back large through holes and the left and right large through holes is 300mm, and the large holes are arranged in a rectangle. The perforated plate 6 is provided with 25 blind holes with the aperture of 40mm and the depth of 15mm, the center distance between two adjacent blind holes in the front and back, the left and the right is 300mm, and the blind holes are arranged in a rectangle. The bottom surface of the perforated plate 6 is vertically spaced from the bottom surface of the housing 1 by 0.4 m.
4) In the step 1), the conductive particles are filled on the porous plate 6 in the shell 1 to form the conductive particle fixed bed layer 3, the characteristic size of the particles is 30mm, the thickness of the bed layer is 13/17 of the height of the shell 1, and the porosity of the bed layer is 28.2%.
5) In the step 1), the number of the porous sleeves 4 is 25, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 14/17 of the height of the shell 1, the outer diameter of the porous sleeves is 38mm, the thickness of the porous sleeves is 3mm, and the porous sleeves are made of polytetrafluoroethylene. The surface of the porous sleeve 4 is provided with holes along the radial direction, the aperture is 5mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 15 mm. A columnar electrode 5 is arranged in the porous sleeve 4, the height of the columnar electrode is 1.05 times of the height of the sleeve, and the outer diameter of the electrode is 30 mm.
6) In the step 1), the overhanging lengths of the liquid inlet 7, the oil outlet 10 and the water outlet 13 are 300mm, the nominal diameter is 40mm, and the materials are iron. The vertical distance between the centers of the liquid inlet 7 and the water outlet 13 and the bottom of the shell 1 is 1/2 of the installation height of the porous plate 6. The center of the oil outlet 10 is vertically spaced from the bottom of the housing 1 by 8/9 the height of the housing.
7) In the step 1), the baffle 9, the upper partition plate 11 and the lower partition plate 12 are rectangular flat plates made of iron. The length of the baffle 9, the upper partition plate 11 and the lower partition plate 12 is the same as the width of the shell 1, the thickness is 3mm, and the surfaces of the baffle 9, the upper partition plate 11 and the lower partition plate are coated with insulating coatings. The baffle 9 and the lower partition 12 are welded with the bottom surface and the front and rear wall surfaces of the shell 1, and the widths are 9/10 and 7/10 of the height of the shell 1 respectively. The upper partition 11 is welded to the upper wall surface, front and rear wall surfaces of the casing 1, and has a width 8/9 equal to the height of the casing 1. The distance from the baffle 9, the upper partition 11 and the lower partition 12 to the right wall surface of the casing 1 is 1/4, 1/6 and 1/12 of the length of the casing 1, respectively, and the baffle is kept parallel to the left and right wall surfaces of the casing 1, respectively.
8) In the step 1), the power supply 8 is a direct current power supply.
9) In the step 1), the liquid inlet flow of the oil-in-water emulsion is 8424L/h, and the treatment capacity is 202.18m3/d。
The device integrates the mixing, demulsifying and separating processes in the treatment of the oil-in-water emulsion, the contact and coalescence effects among oil drops are enhanced through the coupling electric field and the conductive particle bed layer in the demulsifying unit, and the oil-water separation of the emulsion after demulsification is further enhanced through the separating unit, so that the demulsifying effect of the emulsion and the oil-water separation efficiency are greatly improved. The device provided by the invention has the advantages of efficient and organic connection and fusion of the three unit processes, small floor area, compact structure, low cost, simplicity and convenience in operation, low energy consumption, high efficiency and the like, and the overall technical and economic advantages are very obvious.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides an electric field coupling conductive particles bed's oil in water emulsion breakdown of emulsion separator, includes casing (1), apron (2), conductive particles bed (3), porous sleeve (4), column electrode (5), perforated plate (6), inlet (7), power (8), baffle (9), oil-out (10), goes up baffle (11), lower baffle (12), delivery port (13), wheel (14), its characterized in that: the device is internally provided with a buffer unit, a demulsification unit and a separation unit, wherein the buffer unit is mainly a cavity at the lower left part of the shell (1); the demulsification unit is positioned at the upper part of the buffer unit and consists of a cover plate (2), a conductive particle bed layer (3), a porous sleeve (4), a columnar electrode (5) and a porous plate (6), wherein the columnar electrode (5) is arranged in the porous sleeve (4) for installation and fixation, the lower end of the porous sleeve (4) is fixedly connected with the porous plate (6), and the upper end of the porous sleeve is fixedly connected with the cover plate (2); the separation unit is positioned on the right side of the buffer unit and the demulsification unit and consists of a baffle (9), an upper partition plate (11), a lower partition plate (12) and a chamber thereof; the conductive particles are filled on a porous plate (6) in the shell (1) to form a conductive particle bed layer (3), the cover plate (2) is positioned above the conductive particle bed layer (3), the baffle plate (9) and the lower partition plate (12) are welded with the bottom surface, the front wall and the rear wall of the shell (1), and the upper partition plate (11) is welded with the upper wall and the front wall and the rear wall of the shell (1); and the two output ends of the power supply (8) are respectively connected with the columnar electrode (5) and the conductive particle bed layer (3).
2. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the shell (1) is of a cuboid structure, the length is 0.2 m-3.5 m, the width is 0.2 m-3.5 m, the height is 0.3 m-6.5 m, the thickness of the shell is 0.1-10 mm, the length-width ratio is 1-1.8, the length-height ratio is 0.3-1, and the material is iron or stainless steel; the bottom support of the shell (1) is provided with 4 wheels which are a mobile oil-in-water emulsion breaking and separating device; the inner and outer walls of the shell (1), the liquid inlet (7), the oil outlet (10) and the inner and outer surfaces of the water outlet (13) are coated with insulating coatings.
3. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the cover plate (2) and the porous plate (6) are square or rectangular insulating plates with holes, and are made of organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride; the length of the cover plate (2) and the perforated plate (6) is 0.18-3.5 m, the width of the cover plate is 0.18-3.5 m, the length-width ratio of the cover plate to the perforated plate is 1: 4-4: 1, the thickness of the cover plate is 1-25 mm, the diameter of a small through hole on the cover plate is 0.5-100 mm, the arrangement of small holes is rectangular, and the center distance between two adjacent small holes in the front, the back, the left and the right is 2-120 mm; the cover plate (2) is provided with 1-36 large through holes, the aperture is 5-150 mm, the center distance between two adjacent large holes in the front and back and the left and right is 50-500 mm, and the large holes are arranged in a rectangle; the perforated plate (6) is provided with 1-36 blind holes, the aperture is 5-150 mm, the depth of the blind holes is 0.5-18 mm, the center distance between two adjacent blind holes in the front and back direction and the left and right direction is 50-500 mm, and the blind holes are arranged in a rectangle; the vertical distance between the bottom surface of the porous plate (6) and the bottom surface of the shell 1 is 0.05-1.5 m.
4. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the conductive particles are filled on the porous plate (6) in the shell (1) to form a conductive particle fixed bed layer (3), the characteristic size of the particles is 0.5-80 mm, the thickness of the bed layer is 1/3-5/6 of the height of the shell (1), and the porosity of the bed layer is 8.5% -43%.
5. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the number of the porous sleeves (4) is 1-36, the porous sleeves are arranged in a rectangular shape, the height of the porous sleeves is 1/2-6/7 of the height of the shell (1), the outer diameter of the porous sleeves is 5-150 mm, the thickness of the porous sleeves is 0.5-20 mm, and the porous sleeves are made of organic glass, polytetrafluoroethylene, ceramics, glass, polyethylene, polypropylene and polyvinyl chloride; the surface of the porous sleeve (4) is provided with holes along the radial direction, the aperture is 0.5-15 mm, the holes are arranged according to a rectangle, and the center distance between two adjacent holes is 1.2-30 mm; porous sleeve (4) in install column electrode (5), column electrode height is 1.05~1.5 times of sleeve height, the electrode external diameter is 2~100 mm.
6. The device for demulsifying and separating oil-in-water emulsion with electric field coupled with conductive particle bed as claimed in claim 1, wherein: the liquid inlet (7), the oil outlet (10) and the water outlet (13) extend out for 30-500 mm, have nominal diameters of 8-65 mm and are made of iron and stainless steel; the vertical distance between the centers of the liquid inlet (7) and the water outlet (13) and the bottom of the shell (1) is 1/4-3/4 of the installation height of the porous plate (6); the vertical distance between the center of the oil outlet (10) and the bottom of the shell (1) is 1/2-8/9 of the height of the shell.
7. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the baffle (9), the upper baffle (11) and the lower baffle (12) are square or rectangular flat plates made of stainless steel or iron; the length of the baffle (9), the length of the upper partition plate (11) and the length of the lower partition plate (12) are the same as the width of the shell (1), the thickness of the baffle is 0.5-25 mm, and the surfaces of the baffle and the lower partition plate are coated with insulating coatings; the baffle (9) and the lower partition plate (12) are connected with the bottom surface, the front wall surface and the rear wall surface of the shell (1) in a welding mode, and the widths of the baffle and the lower partition plate are 1/2-9/10 and 1/5-7/10 of the height of the shell (1); the upper partition plate (11) is connected with the upper wall surface, the front wall surface and the rear wall surface of the shell (1) in a welding mode, and the width of the upper partition plate is 3/10-14/15 of the height of the shell (1); the distances from the baffle (9), the upper partition plate (11) and the lower partition plate (12) to the right wall surface of the shell (1) are 1/5-1/2, 1/10-3/7 and 1/15-5/12 of the length of the shell (1) respectively, and the baffle, the upper partition plate and the lower partition plate are parallel to the left wall surface and the right wall surface of the shell (1) respectively.
8. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the power supply (8) is a direct current power supply, an alternating current power supply or a pulse power supply.
9. The device for demulsifying and separating oil-in-water emulsion of the electric field coupling conductive particle bed layer as claimed in claim 1, wherein: the liquid inlet flow rate of the oil-in-water emulsion of the device is 10L/h-15000L/h, and the treatment capacity is 0.24-360 m3/d。
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