CN112079463B - Coalescence degreaser for oilfield sewage treatment - Google Patents
Coalescence degreaser for oilfield sewage treatment Download PDFInfo
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- CN112079463B CN112079463B CN202010951214.2A CN202010951214A CN112079463B CN 112079463 B CN112079463 B CN 112079463B CN 202010951214 A CN202010951214 A CN 202010951214A CN 112079463 B CN112079463 B CN 112079463B
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
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- Water Treatment By Sorption (AREA)
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Abstract
The application provides a coalescence degreaser for oilfield sewage treatment, which comprises a tank body; a flow stabilizing device, a rectifying device, a primary filtering device and an oil collecting device are sequentially arranged in the tank body along the flowing direction of the water flow; the tank body sequentially comprises the following components from inside to outside in the thickness direction of the tank wall: the inner liner layer is formed by spraying the spraying yarns, the structural layer is formed by enveloping and winding the resin and fiber material composite material, and the outer surface layer is formed by spraying gel coat resin; the primary filtering device comprises a plurality of primary filtering corrugated plates. The pressure coalescence degreaser has the advantages of simple structure, light weight, high strength and corrosion resistance, can play a good role in corrosion resistance, effectively ensures the stable operation of an oil-water treatment system of an oil field, and ensures the long-term safe and effective operation of the pressure coalescence degreaser.
Description
Technical Field
The application belongs to the technical field of pressure separation treatment equipment for oil fields, and particularly relates to a coalescence degreaser for oil field sewage treatment.
Background
At present, most of domestic old oil fields enter an extra-high water content development period, and along with the adoption of development processes such as water flooding, polymer flooding, ternary composite flooding, thickened oil exploitation, gas flooding and the like, the produced water of the oil fields has the characteristics of various water types, complex water properties and strong corrosiveness.
The traditional oil-water separation treatment equipment is basically made of metal materials, has poor corrosion resistance and serious corrosion, and particularly cannot be effectively implemented in a traditional corrosion prevention mode because of narrow internal space and complex components of small-sized pressure separation equipment (three-phase separator, coalescent oil remover and filter), so that no effective method for controlling corrosion is always found at present, the equipment body and the internal components are serious in corrosion, short in service life and high in maintenance cost, and the stable operation and HSE management of the whole oil-water treatment system are adversely affected. That is, coalescing degreasers of metallic materials that have been used today have a significant limitation in corrosion resistance.
Disclosure of Invention
The application discloses a divisional application with the application number of 2020104475132 and the name of 'a coalescence degreaser for oilfield sewage treatment'. Aims to provide a coalescence degreaser for oilfield sewage treatment, which aims to solve at least one technical problem in the prior art.
In order to solve the technical problems, the coalescing oil remover for oilfield sewage treatment provided by the application comprises the following components: a tank body; a flow stabilizing device, a rectifying device, a primary filtering device and an oil collecting device are sequentially arranged in the tank body along the flowing direction of the water flow;
the tank body sequentially comprises the following components from inside to outside in the thickness direction of the tank wall: the inner liner layer is formed by spraying the spraying yarns, the structural layer is formed by enveloping and winding the resin and fiber material composite material, and the outer surface layer is formed by spraying gel coat resin;
the primary filtering device comprises a plurality of primary filtering corrugated plates, and the primary filtering corrugated plates are formed by laminating glass fiber fabrics and resin matrix materials; the primary filtering corrugated plates are arranged on the side and stacked side by side, and trough grooves of the primary filtering corrugated plates form flow channels communicated with two sides of the primary filtering device.
Further, the oil gathering device includes: coalescing the separator corrugated sheets and the support;
the coalescence-separation corrugated plates are arranged at intervals up and down, and a wavy water flow channel is formed between two adjacent coalescence-separation corrugated plates;
the supporting piece is erected in the water flow channel, and two ends of the supporting piece are fixedly connected with two adjacent coalescence-separation corrugated plates respectively; the support members are disposed at non-edge portions of the coalescing separator corrugated sheet in a projection plane parallel to the coalescing separator corrugated sheet for enhancing rigidity of the coalescing separator corrugated sheet.
It should be noted that the supporting member of the present application is different from the supporting and fixing members provided at both ends of the corrugated plate section of the coalescence-separation corrugated plate or the sectional arrangement, and the present application increases the cross-sectional area of the water flow passage between the adjacent corrugated plates by thinning the thickness of the corrugated plate in the prior art, thereby greatly improving the sewage treatment capacity; on the premise that the sewage treatment efficiency is not reduced, namely under the condition that the cross section of the water flow channel is kept unchanged, the arrangement quantity of the corrugated plates is greatly increased, so that the contact area between the corrugated plates and sewage is increased, and the oil gathering efficiency and effect are improved; in addition, the supporting piece is arranged between two adjacent layers of corrugated plates and at the non-edge part of the corrugated plates, so that the rigidity of the whole oil collecting device is greatly improved, and the problem of stability reduction caused by thinning and easy deformation of the middle part of each corrugated plate is solved.
Wherein, the inner liner is a spray yarn layer (spray yarn is a glass fiber) and is formed by spray yarn. The structure layer is manufactured by adopting a three-dimensional enveloping and winding process, the outer surface layer is a gel coat resin layer, and the outer side of the structure layer is coated by adopting a spraying process, so that the effect of ultraviolet aging resistance is mainly achieved; the design pressure is not less than 0.6MPa.
Further, a medium inlet is formed in the bottom of one end of the tank body, an oil collecting port is formed above the tank body, and a water outlet is formed in the bottom of the other end of the tank body; a plurality of mud discharging openings are arranged at intervals in the middle of the bottom of the tank body.
Further, the rectifying device comprises a plurality of rectifying plates which are arranged at intervals, sewage flows in through the medium inlet of the tank body, is guided by the current stabilizing plates and passes through gaps of the rectifying plates, and the rectifying plates are resin and fiber material composite plates.
Specifically, the rectifying device adopts a plurality of composite material plates to be integrated at equal intervals, and mainly plays a role in medium rectification and steady flow.
Further, trough type grooves of the primary filtering corrugated plates are arranged at an included angle of 10-80 degrees with the horizontal direction.
Further, the included angles between the trough type grooves of two adjacent primary filtering corrugated plates and the horizontal direction are positive and negative. Namely, in the water flow direction, trough type grooves (flow channels) of one of the two adjacent primary filtering corrugated plates are arranged from top to bottom, and trough type grooves (flow channels) of the other one of the two adjacent primary filtering corrugated plates are arranged from bottom to top.
The flow channels formed by the trough grooves of two adjacent corrugated plates are arranged from top to bottom, and the flow channels are arranged from bottom to top, so that the oil-water separation is facilitated.
Further, the lining layer is formed by assembling a left end cover, a right end cover and a middle ring section.
As a further preferable technical scheme, the pre-filtering corrugated plate and the coalescence-separation corrugated plate can be used for adjusting the wavelength and the height according to different application environments.
The coalescence degreaser for oilfield sewage treatment provided by the application has the advantages of simple structure, light weight, high strength and corrosion resistance, and can play a good role in corrosion resistance, so that the smooth operation of an oilfield oil-water treatment system is effectively ensured, and the long-term safe and effective operation of the pressure coalescence degreaser is ensured.
Further, the coalescence-separation corrugated plate is formed by pressing a glass fiber and a resin matrix material.
The important parts such as the oil gathering device and the tank body are all made of composite materials, have the advantages of corrosion resistance, high strength and the like, have excellent mechanical and physical properties, can effectively prevent the oil tank from causing environmental pollution and potential safety hazard due to liquid leakage, and simultaneously, are convenient to operate, high in production efficiency, favorable for ensuring the product quality and wide in application range.
Further, the upper surface of the coalescence-separation corrugated plate is coated with an oleophobic coating, and the lower surface is coated with an oleophilic coating.
According to the application, the surfaces of the coalescence-separation corrugated plates are specially treated, the bottom surfaces of the water flow channels, namely the upper surfaces of the corrugated plates, are coated with the oleophobic coating, when sewage flows through, fine oil molecules in the water are forced to float upwards and gradually gather, while the top surfaces of the water flow channels, namely the lower surfaces of the corrugated plates, are coated with the oleophilic coating, and when sewage flows through, the fine oil molecules tend to be adsorbed upwards and gather, so that the gathering effect of the oil molecules in the sewage is further improved.
Further, the two adjacent coalescence-separation corrugated plates comprise an upper corrugated plate arranged above and a lower corrugated plate arranged below;
the upper end of the supporting piece is fixedly connected with the bottom surface of the upper corrugated plate, and the lower end of the supporting piece is fixedly connected with the top surface of the lower corrugated plate.
Preferably, in the height direction, the supporting members in the water flow channels are arranged on the same vertical axis, so that the supporting force born by the supporting members is sequentially transmitted through the supporting members which are connected end to end, the coalescence-separation corrugated plates cannot be bent and deformed due to the supporting force, and the overall mechanical property of the oil collecting device is better.
Further, two ends of the supporting piece are fixedly connected with the upper corrugated plate and the lower corrugated plate in an adhesive mode respectively.
The support member and the corrugated plate are fixed in a plurality of ways, such as bonding, joggling and the like.
Further, the top and the bottom of the coalescence-separation corrugated plate are respectively and correspondingly provided with an upper slot and a lower slot, and two ends of the supporting piece are respectively inserted into the lower slot at the bottom of the lower corrugated plate and the upper slot at the top of the lower corrugated plate.
Further, the top and the bottom of the coalescence-separation corrugated plate are respectively provided with a mounting bulge and a plugging groove (similar to a stamping groove and a bulge structure generated by one-step forming in a stamping process); the supporting piece is of a frustum shape, a connecting hole for sleeving the mounting protrusion is formed in the bottom of the supporting piece, and a clamping connector inserted into the inserting groove is formed in the top of the supporting piece.
Further, the support members are disposed at the peak and/or trough positions of the water flow channel.
Further, the support is cylindrical, drum-shaped, spherical or truncated cone-shaped.
When sewage flows through the truncated cone-shaped supporting piece, the truncated cone-shaped structure generates an upward reaction force, so that the water flow generates upward movement disturbance, and the upward accumulation of oil molecules with lighter density is facilitated. Experiments prove that the oil gathering efficiency of the truncated cone-shaped supporting piece is 20-40% better than that of columnar supporting pieces, waist-drum-shaped supporting pieces and the like.
Further, the support includes: a first support provided at a peak of the water flow passage, and a second support provided at a trough of the water flow passage;
the surface of the first support is coated with an oleophilic coating; the second support surface is coated with an oleophobic coating.
The oleophobic and oleophilic coatings belong to the prior art and are not described here in detail.
According to the application, the surfaces of the supporting pieces arranged at the wave crests and the wave troughs are respectively coated with the oleophylic coating and the oleophylic coating, so that the probability of coalescence treatment of oil molecules in sewage is effectively increased, the increase and the extension of the effective treatment surface of the corrugated plate are equivalent, the auxiliary effect of guiding oil-water separation is provided, the enrichment of tiny oil particles is effectively driven and guided, the process of forming large oil beads by the tiny oil particles is accelerated, and the oil particles are stripped from water.
Further, in the water flow direction, the water flow channel comprises a first flow section and a second flow section which are arranged in a staggered manner in sequence, and the surface of the supporting piece in the first flow section is coated with an oleophilic coating; the support surface in the second flow section is coated with an oleophobic coating.
In the water flow direction, the first flow section is used for forcing oil molecules to float upwards for aggregation, and the second flow section is used for forcing water molecules to sink, so that the oil aggregation effect is obviously improved compared with the technology without any coating.
Further, a guide plate is further arranged in the water flow channel and used for forcing water flow to flow left and right in a roundabout manner in a horizontal projection plane.
The flow path length of sewage has been prolonged in the setting of guide plate to increased the buckled plate to sewage treatment's time, thereby effectively improved oily effect and efficiency of gathering.
According to the oil gathering device, the operation space is divided into n layers along the water flow direction through the corrugated plates, and the processing capacity is improved by n times as known by the theory principle of a shallow pool; in addition, the flow guide plate increases interference along the vertical direction of water flow, and in the water flow channel formed by cutting, the medium to be treated is further guided to be fully contacted with the flow guide plate and the corrugated plate, meanwhile, the probability of collision and meeting between tiny oil particles is increased, the oil particle enrichment and water stripping speed is greatly increased, and the efficiency is improved.
Further, the method further comprises the following steps: a frame, an upper platen and a lower platen; the left end and the right end of the coalescence-separation corrugated plate are inserted into clamping grooves on two sides of the frame, and the upper pressing plate and the lower pressing plate clamp and fix a plurality of coalescence-separation corrugated plates from top to bottom respectively.
According to the oil gathering device provided by the application, after the thickness of the corrugated plate in the prior art is thinned, the flow cross section of a medium to be treated is increased, the overflow area is effectively increased, and the flow is increased; after the surface of the coalescence-separation corrugated plate is treated by a special coating, small oil particles are easy to gather in the trough, and the wave crest is easy to separate from the continuously grown oil drops, so that the gathering effect of the oil drops is enhanced; the operation space is divided into n layers along the water flow direction through the corrugated plates, so that the guiding interference is increased along the water flow vertical direction, the oil particle enrichment speed is greatly increased, and the efficiency is improved; the mutual matching of the oleophylic and hydrophobic coating and the oleophobic coating is increased, the flowing direction of small oil particles is guided purposefully, the probability of collision and meeting among the tiny oil particles is improved, and the coalescing efficiency of the oil particles is further accelerated.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a composite coalescing degreaser for oilfield sewage treatment according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of the tank wall of the tank body in example 1 of the present application;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is a schematic view of the structure of the water flow channel in the oil coalescing device in embodiment 1 of the present application;
FIG. 5 is a view in the direction B of FIG. 1;
FIG. 6 is an exploded view of two adjacent pre-filtered corrugated plates in a vertical projection plane according to example 1 of the present application;
fig. 7 is a schematic structural diagram of an oil-gathering device according to embodiment 2 of the present application;
FIG. 8 is a schematic view showing the structure of the supporting member of embodiment 2 of the present application coaxially disposed up and down;
FIG. 9 is a schematic view showing the structure of a framed oil coalescing assembly according to embodiment 2 of the present application;
FIG. 10 is an exploded view of the structure of the connection of the support member and the coalescing separator corrugated plate provided in embodiment 3 of the present application;
fig. 11 is a schematic structural diagram of an oil-gathering device with a baffle in embodiment 4 of the present application.
Reference numerals:
10-a tank body; 10 a-inner liner; 10 b-structural layer; 10 c-an outer surface layer; 11-medium inlet; 12-a mud discharging port; 13-a water outlet; 14-oil collecting ports; 20-a current stabilizer; 30-rectifying means; 40-primary filtering device; 41-primary filtering corrugated plates; 50-an oil gathering device; 51-a support; 511-a first support; 512-a second support; 52-agglomerating and separating corrugated plates; 521-upper corrugated plate; 522-lower corrugated plate; 53-water flow channel; 54-frame; 55-an upper press plate; 56-a lower pressing plate; 57-deflector; 60-mud guard.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The application is further illustrated with reference to specific embodiments.
Example 1
As shown in fig. 1, the coalescing oil remover for treating oilfield sewage provided in this embodiment includes: a tank 10; a flow stabilizer 20, a rectifying device 30, a primary filtering device 40 and an oil collecting device 50 are sequentially arranged in the tank body 10 along the flowing direction of water. A medium inlet 11 is formed in the bottom of one end of the right side of the tank body 10, one or a plurality of oil collecting ports 14 are formed above the tank body 10, and a water outlet 13 is formed in the bottom of the other end of the tank body 10; a plurality of mud discharging ports 12 are arranged at intervals in the middle of the bottom of the tank body 10. A plurality of mud guards 60 are further arranged in the tank body 10 at intervals and used for preventing the sediment from continuously flowing, and the mud guards 60 are generally arranged on one side of the mud discharge opening 12 in the downstream direction of the water flow, so that the mud is guided to be discharged through the mud discharge opening.
As shown in fig. 2, the tank body 10 includes, in order from inside to outside in the thickness direction of the tank wall: an inner liner layer 10a formed by spraying sprayed yarns, a structural layer 10b formed by enveloping and winding a composite material of resin and fiber material, and an outer surface layer 10c formed by spraying gel coat resin. Optionally, the resin comprises 25% to 40% by weight of the total weight of the structural layer 10 b. The structural layer 10b formed by mixing resin and fiber is manufactured by a winding forming process, and has high strength, good shock resistance and corrosion resistance.
The inner liner 10a is a sprayed yarn layer (sprayed yarn is a glass fiber) and is formed by spraying the sprayed yarn. Preferably, the inner liner 10a is assembled by a left end cover, a right end cover and a plurality of middle ring segments. After assembly, the structural layer 10b is manufactured outside the lining layer 10a by adopting a three-dimensional enveloping and winding process; the outer surface layer 10c is a gel coat resin layer, is coated on the outer side of the structural layer 10b by adopting a spraying process, and mainly plays a role in resisting ultraviolet aging; the design pressure is not less than 0.6MPa.
The carbon fiber reinforced composite material coalescence degreaser tank body 10 manufactured by the manufacturing method can effectively prevent environmental pollution and potential safety hazard caused by liquid leakage of an oil tank, has excellent mechanical and physical properties, improves the overall strength, is convenient to operate, has high production efficiency, is favorable for ensuring the quality of products, and has wide application range.
As shown in fig. 3 and 4, the oil coalescing assembly 50 includes a frame 54 and coalescing separator bellows layers. In the height direction, a plurality of horizontally disposed coalescing separator bellows layers are disposed in spaced relation from one another by a frame 54, and a wave-like water flow passage 53 is formed between two adjacent coalescing separator bellows layers. In the height direction, the oil collecting device 50 comprises a plurality of water flow channels 53 which are arranged in parallel at intervals. The width of the water flow channel 53 corresponds to the thickness of the can 10. The coalescing separator corrugated sheet layer is formed of one or more coalescing separator corrugated sheets 52. The coalescence-separation corrugated plate 52 is formed by laminating a glass fiber fabric and a resin matrix material.
The important parts of the oil gathering device 50, the tank body 10 and the like are all made of composite materials, have the advantages of corrosion resistance, high strength and the like, have excellent mechanical and physical properties, can effectively prevent the oil tank from causing environmental pollution and potential safety hazard due to liquid leakage, and meanwhile, are convenient to operate, high in production efficiency, favorable for ensuring the product quality and wide in application range.
In this embodiment, the flow stabilizer 20 is a flow guide plate disposed above the medium inlet 11, and is used for guiding the medium such as sewage into a rectifying cavity surrounded by the rectifying device 30 and the right end of the tank body 10, where the rectifying device 30 includes a plurality of rectifying plates disposed at intervals, and after flowing in through the medium inlet 11 of the tank body 10, the sewage flows through the flow guide plate through the gap of the rectifying plates after being guided by the flow guide plate, and the rectifying plates are resin and fiber material composite plates.
Specifically, as shown in fig. 5, the rectifying device 30 is formed by integrating a plurality of composite plates at equal intervals, and is in a grid shape, and mainly plays roles of medium rectification and steady flow.
The primary filtering device 40 comprises a plurality of primary filtering corrugated plates 41, wherein the primary filtering corrugated plates 41 are formed by laminating glass fiber fabrics and resin matrix materials; the plurality of primary filtering corrugated plates 41 are erected in the tank body and are sequentially arranged at intervals in the thickness direction of the tank body 10, and trough-type grooves of the primary filtering corrugated plates 41 form flow passages communicated with two sides of the primary filtering device 40.
Fig. 6 is an exploded schematic view of two adjacent primary filtering corrugated plates 41 in a vertical projection plane, and as shown in fig. 6, trough-type grooves of the primary filtering corrugated plates 41 are arranged at an included angle of 20-70 ° with the horizontal direction. The trough type grooves of two adjacent primary filtering corrugated plates 41 form a positive pair with the included angle of the horizontal direction. That is, in the water flow direction, the trough type grooves (flow passages) of one of the adjacent two of the preliminary filtration corrugated plates 41 are provided from top to bottom, and the trough type grooves (flow passages) of the other of the adjacent two of the preliminary filtration corrugated plates 41 are provided from bottom to top. The flow channels formed by the trough grooves of two adjacent corrugated plates are arranged from top to bottom, and the flow channels are arranged from bottom to top, so that the oil-water separation is facilitated.
Compared with the prior art, the application has the beneficial effects that:
1. the composite material coalescence degreaser provided by the application has the advantages of light weight, high strength, good conductivity, excellent corrosion resistance, stable structure, long service life and the like, and is stable and reliable in operation, the product quality of the coalescence degreaser is improved, and the stable operation of an oil-water separation treatment system of an oil field is ensured.
2. The coalescing oil remover tank body is lighter in weight, convenient to produce, install and construct, light in weight and high in strength through application of the composite material, and is more convenient and quicker in production, transportation, hoisting and installation and construction.
3. The comprehensive benefit is good, namely the long-term benefit formed by a plurality of factors such as construction investment, installation and maintenance, service life and the like is obvious.
4. The enhanced composite material coalescence degreaser provided by the application has the advantages of reasonable structural design, wide application range and good economic and environmental benefits.
Example 2
The present embodiment is basically the same in structure as embodiment 1, except that:
as shown in fig. 7, the oil collecting device provided in this embodiment includes: coalescing separating corrugated plate 52 and support 51; a plurality of the coalescence-separation corrugated plates 52 are arranged at intervals up and down, and a wave-shaped water flow channel 53 is formed between two adjacent coalescence-separation corrugated plates 52; the supporting member 51 is erected in the water flow passage 53, and both ends thereof are fixedly connected to two coalescing separation corrugated plates 52 adjacent to each other up and down, respectively.
The application increases the cross section area of the water flow channel 53 between the adjacent corrugated plates by thinning the corrugated plates in the prior art, thereby greatly improving the sewage treatment capacity; on the premise that the sewage treatment efficiency is not reduced, namely, the cross section of the water flow channel 53 is kept unchanged, the arrangement quantity of the corrugated plates is greatly increased, so that the contact area between the corrugated plates and sewage is increased, and the oil gathering efficiency and effect are improved; in addition, by adding the supporting piece 51 between two adjacent layers of corrugated plates, the rigidity and strength of the whole oil collecting device are greatly improved, and the problem of stability reduction caused by thinning of the corrugated plates is solved.
The coalescence-separation corrugated plate 52 in this embodiment is formed by laminating glass fibers and a resin matrix material. Thereby greatly improving the anti-corrosion performance of the whole oil gathering device. More preferably, the upper surface of the coalescing separator corrugation plate 52 is coated with an oleophobic coating and the lower surface is coated with an oleophilic coating.
In the present application, the surface of the coalescence-separation corrugated plate 52 is specially treated, the bottom surface of the water flow channel 53, i.e., the upper surface of the corrugated plate, is coated with an oleophobic coating, which is advantageous in forcing fine oil molecules in water to float upward and gradually aggregate when sewage flows, while the top surface of the water flow channel 53, i.e., the lower surface of the corrugated plate, is coated with an oleophilic coating, and the fine oil molecules tend to be adsorbed upward and aggregate when sewage flows, thereby further improving the aggregation effect of oil molecules in sewage.
As shown in fig. 7, the adjacent two of the coalescing separation corrugation plates 52 include an upper corrugation plate 521 provided above and a lower corrugation plate 522 provided below; the upper end of the supporting member 51 is fixedly connected with the bottom surface of the upper corrugated plate 521, and the lower end of the supporting member 51 is fixedly connected with the top surface of the lower corrugated plate 522.
As shown in fig. 8, preferably, the supporting members 51 in the plurality of water flow channels 53 are arranged on the same vertical axis in the height direction, so that the supporting force born by the supporting members 51 is sequentially transmitted through the plurality of end-to-end supporting members 51, and the coalescence-separation corrugated plate 52 is not bent and deformed due to the supporting force, so that the overall mechanical property of the oil collecting device is better.
In the present application, the support member 51 and the corrugated plate are fixed in a plurality of ways, for example, both ends of the support member 51 are fixedly connected to the upper corrugated plate 521 and the lower corrugated plate 522 by bonding. Alternatively, the top and bottom of the coalescence-separation corrugated plate 52 are respectively provided with an upper slot and a lower slot, and the two ends of the supporting member 51 are respectively inserted into the lower slot at the bottom of the lower corrugated plate 522 and the upper slot at the top of the lower corrugated plate 522.
More preferably, in the above technical solution, the supporting member 51 includes: a first support 511 provided at the peak of the water flow channel 53, and a second support 512 provided at the trough of the water flow channel 53; the surface of the first support 511 is coated with an oleophilic coating; the second support 512 is coated with an oleophobic coating on its surface. The oleophobic and oleophilic coatings belong to the prior art and are not described here in detail.
According to the application, the surfaces of the supporting pieces 51 arranged at the wave crests and the wave troughs are respectively coated with the oleophilic coating and the oleophobic coating, so that the probability of coalescence treatment of oil molecules in sewage is effectively increased, which is equivalent to the increase and extension of the effective treatment surface of the corrugated plate, the auxiliary effect of guiding oil-water separation is provided, the enrichment of tiny oil particles is effectively driven and guided, the process of forming large oil beads by the tiny oil particles is accelerated, and the oil particles are stripped from water.
As shown in fig. 9 (the supporting member 51 is omitted from the drawing), to further fix the coalescing separation corrugated plate 52, the present embodiment further includes: a frame 54, an upper platen 55, and a lower platen 56; the left and right ends of the coalescence-separation corrugated plate 52 are inserted into the clamping grooves on the two sides of the frame 54, and the upper pressing plate 55 and the lower pressing plate 56 clamp and fix the coalescence-separation corrugated plate 52 from top to bottom. The outer contour shapes of the frame 54, the upper press plate 55, and the lower press plate 56 may be set according to the inner cross-sectional shape of the oil removal tank.
According to the oil gathering device provided by the application, after the thickness of the coalescence-separation corrugated plate 52 in the prior art is thinned, the flow cross section of a medium to be treated is increased, the flow area is effectively increased, and the flow is increased; after the surface of the coalescence-separation corrugated plate 52 is treated by a special coating, small oil particles are easy to gather in the trough, and the wave crest is easy to separate from the continuously grown oil drops, so that the gathering effect of the oil drops is enhanced; the operation space is divided into n layers along the water flow direction through the corrugated plates, so that the guiding interference is increased along the water flow vertical direction, the oil particle enrichment speed is greatly increased, and the efficiency is improved; the mutual matching of the oleophylic and hydrophobic coating and the oleophobic coating is increased, the flowing direction of small oil particles is guided purposefully, the probability of collision and meeting among the tiny oil particles is improved, and the coalescing efficiency of the oil particles is further accelerated.
Example 3
The present embodiment is basically the same in structure as embodiment 2, except that:
as shown in fig. 10, when the coalescing separator corrugation plate 52 is thin, for example less than 5mm thick, a more convenient way of laying the support 51 is: the top and the bottom of the coalescence-separation corrugated plate 52 are respectively provided with a mounting bulge and a splicing groove which can be synchronously formed when the coalescence-separation corrugated plate 52 is pressed into a film; the supporting piece 51 is a frustum, a connecting hole for sleeving the mounting protrusion is formed in the bottom of the supporting piece 51, and a clamping connector inserted into the inserting groove is formed in the top of the supporting piece 51.
And the support 51 has an overall truncated cone shape. When sewage flows through the truncated cone-shaped supporting member 51, the truncated cone-shaped structure generates an upward reaction force, so that the upward movement disturbance is generated in the water flow, and the upward accumulation of the oil molecules with low density is facilitated. Experiments prove that the oil collecting efficiency of the truncated cone-shaped supporting piece 51 is 20-40% better than that of columnar, waist drum-shaped and other structures.
Example 4
The present embodiment is basically the same in structure as embodiment 2, except that:
as shown in fig. 11, a baffle 57 is further disposed in the water flow channel 53, wherein, in the width direction of the water flow channel 53, two ends of the baffle 57 are fixedly connected with two adjacent supporting members 51 by bonding or integrally disposing, etc.; the guide plates 57 are arranged at intervals in the width direction of the water flow channel 53, the guide plates 57 are arranged in a staggered manner in the water flow direction, and the guide plates 57 force water flow to flow in a left-right roundabout manner in the horizontal projection plane. The provision of the baffle 57 lengthens the flow path length of the sewage, thereby increasing the time of the corrugated plate for sewage treatment, and thus effectively improving the oil gathering effect and efficiency.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (5)
1. A coalescing oil remover for oilfield sewage treatment, comprising: a tank body; a flow stabilizing device, a rectifying device, a primary filtering device and an oil collecting device are sequentially arranged in the tank body along the flowing direction of the water flow;
the tank body sequentially comprises the following components from inside to outside in the thickness direction of the tank wall: the inner liner layer is formed by spraying the spraying yarns, the structural layer is formed by enveloping and winding the resin and fiber material composite material, and the outer surface layer is formed by spraying gel coat resin;
the primary filtering device comprises a plurality of primary filtering corrugated plates, and the primary filtering corrugated plates are formed by laminating glass fiber fabrics and resin matrix materials; the primary filtering corrugated plates are laterally erected and stacked side by side, and trough grooves of the primary filtering corrugated plates form flow channels communicated with two sides of the primary filtering device;
the trough type grooves of the primary filtering corrugated plates are arranged at an included angle of 20-70 degrees with the horizontal direction;
the trough type grooves of two adjacent primary filtering corrugated plates form a positive pair with the included angle of the horizontal direction; in the water flow direction, trough type grooves of one of the two adjacent primary filtering corrugated plates are arranged from top to bottom, and trough type grooves of the other of the two adjacent primary filtering corrugated plates are arranged from bottom to top.
2. The coalescing oil remover for oilfield sewage treatment of claim 1, wherein the inner liner is a layer of sprayed yarns; the outer surface layer is a gel coat resin layer.
3. The coalescing oil remover for oilfield sewage treatment according to claim 1, wherein a medium inlet is formed in the bottom of one end of the tank body, an oil collecting port is formed above the tank body, and a water outlet is formed in the bottom of the other end of the tank body; a plurality of mud discharging openings are arranged at intervals in the middle of the bottom of the tank body.
4. The coalescing oil remover for treating oilfield sewage according to claim 1, wherein the rectifying device comprises a plurality of rectifying plates which are arranged at intervals, sewage flows in through a medium inlet of the tank body, is guided by the flow stabilizing plates and passes through gaps of the rectifying plates, and the rectifying plates are resin and fiber material composite plates.
5. The coalescing oil remover for oilfield sewage treatment of claim 1, wherein the inner liner is formed by assembling a left end cover, a right end cover and a middle ring segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010951214.2A CN112079463B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oilfield sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010951214.2A CN112079463B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oilfield sewage treatment |
| CN202010447513.2A CN111348769B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oil field sewage treatment |
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| CN202010447513.2A Division CN111348769B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oil field sewage treatment |
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| CN112079463A CN112079463A (en) | 2020-12-15 |
| CN112079463B true CN112079463B (en) | 2023-10-10 |
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| CN202010951214.2A Active CN112079463B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oilfield sewage treatment |
| CN202010951234.XA Active CN112110553B (en) | 2020-05-25 | 2020-05-25 | Oil gathering device and coalescence degreaser for oilfield sewage treatment |
| CN202010447513.2A Active CN111348769B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oil field sewage treatment |
| CN202010951235.4A Active CN112079464B (en) | 2020-05-25 | 2020-05-25 | Primary filtering device and coalescence degreaser thereof |
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| CN202010447513.2A Active CN111348769B (en) | 2020-05-25 | 2020-05-25 | Coalescence degreaser for oil field sewage treatment |
| CN202010951235.4A Active CN112079464B (en) | 2020-05-25 | 2020-05-25 | Primary filtering device and coalescence degreaser thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111877286A (en) * | 2020-07-20 | 2020-11-03 | 大连海事大学 | Marine spilled oil cleaning catamaran capable of achieving second-degree recovery |
| CN112943713B (en) * | 2021-02-19 | 2022-08-23 | 燕山大学 | Labyrinth type hydraulic oil tank |
| CN112551726B (en) * | 2021-02-23 | 2021-05-11 | 山东菲纳科技发展有限公司 | Device for filtering sewage |
| CN112551727B (en) * | 2021-02-23 | 2021-05-11 | 山东菲纳科技发展有限公司 | Oil remover |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111348769A (en) | 2020-06-30 |
| CN112110553B (en) | 2023-07-28 |
| CN112079463A (en) | 2020-12-15 |
| CN112079464A (en) | 2020-12-15 |
| CN111348769B (en) | 2020-10-13 |
| CN112110553A (en) | 2020-12-22 |
| CN112079464B (en) | 2023-10-03 |
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