CN114212905A - A kind of oil field multifunctional pre-separation water treatment equipment - Google Patents
A kind of oil field multifunctional pre-separation water treatment equipment Download PDFInfo
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- CN114212905A CN114212905A CN202111555306.XA CN202111555306A CN114212905A CN 114212905 A CN114212905 A CN 114212905A CN 202111555306 A CN202111555306 A CN 202111555306A CN 114212905 A CN114212905 A CN 114212905A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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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Abstract
The invention discloses multifunctional pre-diversion water treatment equipment for an oil field, which comprises an air-entrapping cyclone, a vertical high-efficiency pressure separator and a turbulent flow coalescence filter which are sequentially connected, wherein the air-entrapping cyclone comprises an air floatation separation cylinder, a cyclone cylinder and an oil collecting pipe which are sequentially and concentrically sleeved from outside to inside, the bottom end of the cyclone cylinder extends out of the air floatation separation cylinder, and the bottom end of the oil collecting pipe extends out of the cyclone cylinder; the vertical high-efficiency pressure separator is internally provided with an oil overflow layer communicated with an oil overflow pipe, a micro-vortex coalescence adsorption packing layer, a sedimentation separation zone, an inclined plate or inclined pipe packing layer, a purified water layer and a sludge sedimentation layer communicated with a sewage outlet from top to bottom. Compared with the prior art, the invention integrates the low-strength hydrocyclone separation technology with the existing air flotation technology, is suitable for separating dispersed oil and emulsified oil, and has the characteristics of high oil-water separation efficiency, simple structure, easy operation, reliable control and high cost performance.
Description
Technical Field
The invention relates to the technical field of oilfield sewage treatment, in particular to multifunctional oil field pre-diversion water treatment equipment.
Background
Pre-diversion means that partial sewage is separated in advance in a well group, a metering station, a transfer station and the like, reinjection is carried out after on-site treatment reaches the standard, and the residual low-water-content produced liquid is sent to a combined station for centralized treatment. At present, 5 types of oil-water separators can be mainly used for the pre-water separation technology: the hydrocyclone has small floor area, small mass, high treatment efficiency and easy installation and maintenance and is mainly used for offshore oil fields; the inclined tube pre-water separator has simple operation and low investment, and is widely used in high water-cut oil fields in Russia and Europe and America; the Gun Barrel separator has stable operation condition and convenient management, and is applied to foreign oil fields in a small amount; the three-phase separator pre-divides water, has stable operation condition and convenient management and is most widely applied in China; the multifunctional crude oil treatment combination device (five-in-one) has small occupied area and convenient operation, and the devices have the pre-water-dividing function, but have single technology and can not completely adapt to the field production requirement of improving the treatment efficiency and reducing the load of a rear-end treatment system.
Along with the continuous deepening of the development of each large oil field, the liquid extraction amount and the comprehensive water content of the produced liquid continuously rise, on one hand, the increase of the liquid extraction amount causes that part of gathering and transportation stations are close to or run in an overload mode, and a series of problems of energy consumption increase, cost increase and the like are brought to the surface treatment of the oil fields; for the oil field with extremely high water content period, in which the oil field with small blocks at far edge or the produced liquid is increased year by year, the extracted liquid is an effective low-cost technical measure corresponding to low oil price, the part of the gathering and transportation station base with increased liquid amount is also close to or runs in an overload mode, and the high water content produced liquid also brings a series of problems of energy consumption increase, cost increase and the like for the oil field surface treatment; on the other hand, the produced liquid is transported in a long distance and intensively, which has the problems of large energy consumption, high treatment cost, incapability of guaranteeing water quality and the like; how to shorten the flow of produced liquid treatment, reduce the load of a rear-end oil-water treatment system and reduce the loss along the process is an effective way for improving the treatment efficiency and the treatment effect.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the multifunctional oil field pre-divided water treatment equipment which not only has a pre-divided water treatment function, but also has other functions of shortening a produced liquid treatment process, reducing the load of a rear-end oil-water treatment system, reducing the loss along the process and the like, and can meet the field production requirement of improving the treatment efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a multifunctional pre-diversion water treatment device for an oil field comprises an air-entrapping cyclone, a vertical efficient pressure separator and a turbulent flow coalescence filter which are sequentially connected, wherein the air-entrapping cyclone comprises an air floatation separation cylinder, a cyclone cylinder and an oil collection pipe which are sequentially and concentrically sleeved from outside to inside, the bottom end of the cyclone cylinder extends out of the air-entrapping separation cylinder, the bottom end of the oil collection pipe extends out of the cyclone cylinder, the top of the air-entrapping separation cylinder extends out of a gas circulation pipe for discharging gas, and the bottom of the air-entrapping cyclone cylinder is provided with a water guide pipe; the top ends of the cyclone cylinder and the oil collecting pipe are provided with openings, the bottom of the cyclone cylinder is provided with a sewage pipe, the sewage pipe is also provided with a dissolved air inlet connected with a dissolved air pump, and the dissolved air is conveyed to the cyclone cylinder through the dissolved air inlet;
an oil overflow pipe extends out of the top of the vertical high-efficiency pressure separator, a drain outlet extends out of the bottom of the vertical high-efficiency pressure separator, an oil overflow layer communicated with the oil overflow pipe, a micro-vortex coalescence adsorption packing layer, a sedimentation separation zone connected with the output end of the air-entraining swirler, an inclined plate or inclined pipe packing layer, a purified water layer and a sludge sedimentation layer communicated with the drain outlet are arranged in the vertical high-efficiency pressure separator from top to bottom, and the outer part of the purified water layer is connected with the turbulent coalescence filter correspondingly; the output end of the air-entraining swirler connected with the settling separation zone is also provided with a dissolved air inlet connected with a dissolved air pump, and the dissolved air is conveyed to the settling separation zone through the dissolved air inlet;
the top of the turbulent flow coalescence filter extends out of an oil collecting pipe, the bottom of the turbulent flow coalescence filter extends out of a water outlet, a turbulent flow oil removing component and a micro-vortex coalescence adsorption packing layer are respectively arranged in the turbulent flow coalescence filter close to the top, and a double-filter material filtering layer is arranged close to the bottom.
Furthermore, the air flotation separation cylinder and the water guide pipe are communicated in a U-shaped communicating pipe arrangement mode, a water purification tank connected with an outlet of the water guide pipe is arranged close to the top of the air flotation separation cylinder, and an outlet of the water purification tank is connected with a sedimentation separation area of the vertical efficient pressure separator.
The outside water purification layer department that corresponds of vertical high-efficient pressure separator connects gradually water pump inlet tube, water pump and water pump outlet pipe, the turbulent flow deoiling component connection of water pump outlet pipe end and turbulent flow coalescence filter.
And a water collecting cabin connected with an inlet of the water guide pipe is arranged at the bottom of the air floatation separation cylinder.
The filler filled in the double-filter-material filtering layer is quartz sand and anthracite, or carborundum and anthracite, or quartz sand and walnut shells.
The air-entraining cyclone, the vertical high-efficiency pressure separator and the turbulent flow coalescence filter are all of tank structures.
The invention changes the traditional metering station mode, adopts the modes of high-efficiency water diversion, sewage treatment and on-site reinjection in the metering station, is realized by the processes of air entrainment rotational flow, high-efficiency coalescence sedimentation, turbulent flow filtration and the like, and is an effective way for improving the treatment efficiency and the treatment effect.
The air-entrapping cyclone is low-strength hydraulic cyclone and air flotation combined water treatment equipment, dissolved air and oily sewage pass through a sewage pipe, enter a cyclone cylinder from the bottom of the cyclone cylinder along the tangential direction, spirally rotate upwards, rise upwards to enter the upper part of the cyclone cylinder, under the action of centrifugal force, water with higher density is thrown to the outer wall of the cyclone cylinder, a crude oil and oil-gas mixture with lower density is thrown to the outer wall of an oil collection pipe by heavy water pressure, oil drops and bubbles are combined because the density is smaller than that of surrounding water, and the oil drops are floated by rising of the bubbles, the oil-gas mixture flows into the inside of the oil collection pipe after entering the upper part of the oil collection pipe along the outer wall of the oil collection pipe in a cyclone mode, and flows out from the bottom of the oil collection pipe after being controlled by liquid level; the water thrown to the outer wall of the cyclone cylinder moves downwards in a cyclone manner around the outer wall of the cyclone cylinder in the air flotation separation cylinder, meanwhile, dissolved gas in the water plays roles of adsorption, coalescence and floating, so that oil and water are further separated by settling, and the purified water at the lower part enters the water purification tank through the specially designed U-shaped communicating pipe through the water guide pipe, so that the separation effect of the oil, the gas and the water phase is achieved.
The air-entrapping cyclone can realize the functions of cyclone, air flotation separation, oil collection and the like, and has simple structure, easy operation and reliable control; after the dissolved gas water reaches a certain height, the dissolved gas water is forcibly turned to an outer layer space due to water outlet control and continuously rotates downwards, the area of the outer layer annular space is enlarged, the rotating speed and the downward flow velocity of the liquid are slowed, oil droplets which are not separated out by the rotational flow move upwards under the carrying of micro bubbles and enter an oil collecting pipe together with floating oil separated out by the rotational flow to be discharged out of a cyclone; the special water outlet structure can stably control the oil-water interface and the liquid level, the water quality of outlet water cannot be influenced by the fluctuation of the water quality and the water quantity of incoming water, and the removal rate of sewage and oil in water reaches more than 90 percent.
The vertical high-efficiency pressure separator adopts the technical principles of coalescence adsorption and inclined plate/inclined tube sedimentation, and specifically comprises the following steps: the effluent of the air-entraining cyclone enters a vertical high-efficiency pressure separator laterally, the upper part in the separator is provided with a micro-vortex adsorption coalescence filler, the middle lower part is provided with an inclined plate or an inclined tube filler layer, the incoming liquid enters the separator and is subjected to oil-water sedimentation separation in a sedimentation separation zone, the water-containing oil passes through the coalescence adsorption filler upwards, oil drop particles slowly grow and continue to move upwards, and finally the oil is discharged through an oil overflow pipe on the device; the oily water moves downwards, according to the shallow pool principle, the oil, the water and suspended matters in the liquid are efficiently separated through inclined plate inclined tube packing, the oil moves upwards, the suspended matters settle downwards and are discharged through a sewage discharge outlet, and the purified water is discharged to a turbulent flow coalescence filter from the side of a water outlet pipe.
The turbulent coalescence filter adopts the technical principles of coalescence adsorption and double-filter material filtration, and specifically comprises the following steps: liquid coming from the vertical high-efficiency pressure separator enters a turbulent oil removal component to carry out vortex rotation, the generated centrifugal force circularly moves oil gas inwards, and dispersed oil and light organic matters are removed in the step; the separated liquid enters a micro-vortex adsorption and aggregation filler layer, and fine particles are mainly aggregated into large particles and fine oil droplets are aggregated into large oil droplets in the step; the coalesced liquid enters a particle filter material for filtering, and particles and oil droplets are absorbed and intercepted by a double-filter material filter layer.
The invention combines the low-strength hydrocyclone separation technology with the existing air flotation technology, is suitable for separating dispersed oil and emulsified oil, and has the characteristics of high oil-water separation efficiency, simple structure, easy operation, reliable control and high cost performance.
The invention adopts coalescence adsorption and secondary dissolved air flotation to enhance the oil-water separation efficiency; the settling area is provided with a matched inclined plate or inclined pipe, and the separation efficiency is effectively improved by utilizing the shallow pool principle.
The water guide pipe and the water outlet pipe in the invention can improve the impact load resistance of the equipment and reduce the total occupied area and the total investment by arranging the buffer function;
the oil overflow pipe and the drain outlet are arranged, so that the stability and the reliability of the operation of the device are ensured.
The invention adopts a pressure operation mode in the working process, thereby reducing the energy consumption and the operation management workload.
The treated effluent meets the requirement of minimum water content in pipe transportation, and the purposes of small occupied area, high treatment efficiency and low treatment cost are achieved.
Drawings
The structure and technical features of the present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural view of the present invention.
In the attached figure 1, 1 is an air flotation separation cylinder, 2 is a cyclone cylinder, 3 is an oil collecting pipe, 4 is a gas circulating pipe, 5 is a purified water tank, 6 is a sewage pipe, 7 is a water guide pipe, 8 is an oil overflow layer, 9 is an oil overflow pipe, 10 is a micro-vortex coalescence adsorption packing layer, 11 is a sedimentation separation region, 12 is an inclined plate or inclined pipe packing layer, 13 is a water pump, 14 is a purified water layer, 15 is a sludge sedimentation layer, 16 is a water pump outlet pipe, 17 is an oil collecting pipe, 18 is a turbulent oil removal component, 19 is a double-filter material filtering layer, 20 is a water outlet, 21 is a sewage discharge outlet, 22 is a water pump inlet pipe, and 23 is a dissolved air inlet.
Detailed Description
FIG. 1 is an embodiment of the invention, and discloses a multifunctional pre-diversion water treatment device for an oil field, which comprises an air-entrapping cyclone, a vertical high-efficiency pressure separator and a turbulent flow coalescence filter which are sequentially connected, wherein the air-entrapping cyclone comprises an air floatation separation cylinder 1, a cyclone cylinder 2 and an oil collecting pipe 3 which are sequentially and concentrically sleeved from outside to inside, the bottom end of the cyclone cylinder 2 extends out of the air-entrapping separation cylinder 1, the bottom end of the oil collecting pipe 3 extends out of the cyclone cylinder 2, a gas circulation pipe 4 for discharging gas extends out of the top of the air-entrapping separation cylinder 1, a water collection chamber is arranged at the bottom of the air-entrapping separation cylinder, and a water guide pipe 7 is connected to the outside of the water collection chamber; the top ends of the cyclone cylinder 2 and the oil collecting pipe 3 are opened, the bottom of the cyclone cylinder 2 is provided with a sewage pipe 6, the sewage pipe 6 is also provided with a dissolved air inlet 23 connected with a dissolved air pump, and the dissolved air is conveyed to the cyclone cylinder 2 through the dissolved air inlet 23;
the air flotation separation cylinder 1 and the water guide pipe 7 are communicated in a U-shaped communicating pipe arrangement mode, a purified water tank 5 connected with an outlet of the water guide pipe 7 is arranged at the position, close to the top, of the air flotation separation cylinder 1, and an outlet of the purified water tank 5 is connected with a sedimentation separation area 11 of the vertical efficient pressure separator.
The air-entrapping cyclone in the embodiment of the invention is low-strength hydrocyclone and air flotation combined water treatment equipment, dissolved air oily sewage enters the cyclone cylinder 2 from the bottom of the cyclone cylinder 2 along the tangential direction through the sewage pipe 6, spirally rotates upwards, rises in a rotating manner to enter the upper part of the cyclone cylinder 2, under the action of centrifugal force, water with high density is thrown to the outer wall of the cyclone cylinder 2, a mixture of crude oil and oil gas with low density is thrown to the outer wall of the oil collection pipe 3 by heavy water pressure, oil drops and bubbles are combined because the density is smaller than that of the surrounding water, the oil drops are floated through the rising of the bubbles, the oil-gas mixture enters the upper part of the oil collection pipe 3 along the outer wall of the oil collection pipe 3 in a swirling manner, flows into the oil collection pipe 3 and flows out from the bottom of the oil collection pipe 3 after liquid level control; the water thrown to the outer wall of the cyclone cylinder 2 moves in a downward cyclone manner around the outer wall of the cyclone cylinder 2 in the air flotation separation cylinder 1, meanwhile, the dissolved gas in the water plays roles of adsorption, coalescence and floating, so that the oil and the water are further separated by sedimentation, and the purified water at the lower part enters the water purification tank 5 through the specially designed U-shaped communicating pipe through the water guide pipe 7, thereby achieving the separation effect of the oil, the gas and the water phase.
Air entrainment swirler, vertical high-efficient pressure separator, turbulent flow coalescence filter are tank structure, and wherein vertical high-efficient pressure separator top is stretched out and is had oil spilling pipe 9, and the bottom is stretched out and is had drain 21, just vertical high-efficient pressure separator inside top-down be equipped with oil spilling pipe 9 intercommunication oil spilling layer 8, little vortex coalescence adsorption packing layer 10, subside disengagement zone 11, swash plate or pipe chute packing layer 12, purify water layer 14 and with the mud settlement layer 15 of drain 21 intercommunication, vertical high-efficient pressure separator outside corresponds and purifies water layer 14 department and has connected gradually water pump inlet tube 22, water pump 13 and water pump outlet pipe 16, water pump outlet pipe 16 end and turbulent flow coalescence filter's turbulent flow deoiling component 18 is connected.
The vertical high-efficiency pressure separator in the embodiment of the invention adopts the technical principles of coalescence adsorption and inclined plate/inclined tube sedimentation, and specifically comprises the following steps: the effluent of the air-entraining cyclone laterally enters a vertical high-efficiency pressure separator, a coalescence adsorption filler layer 10 is arranged at the upper part in the separator, an inclined plate or inclined tube filler layer 12 is arranged at the middle lower part, after the incoming liquid enters the separator, oil and water are separated in a sedimentation separation zone 11 by temporary sedimentation, the water-containing oil passes upwards through the coalescence adsorption filler layer 10, oil drop particles are gradually enlarged, the upward movement is continued, and finally the oil is discharged through an oil overflow pipe 9 at the upper part of the separator; the oily water moves downwards, according to the shallow pool principle, the oil, the water and suspended matters in the liquid are efficiently separated through the inclined plate or the inclined tube packing layer 12, the oil moves upwards, the suspended matters settle downwards and are discharged through the sewage discharge outlet 21, and the purified water is discharged to the turbulent flow coalescence filter from the side of the water outlet pipe 16.
The top of the turbulent flow coalescence filter extends out to form an oil collecting pipe 17, the bottom of the turbulent flow coalescence filter extends out to form a water outlet 20, the inside of the turbulent flow coalescence filter is close to the top and is respectively provided with a turbulent flow oil removing component 18 and a micro-vortex coalescence adsorption packing layer 10, the bottom of the turbulent flow coalescence filter is provided with a double-filter material filtering layer 19, and the packing inside the double-filter material filtering layer 19 is quartz sand and anthracite, or carborundum and anthracite, or quartz sand and walnut shells.
The turbulent coalescence filter in the embodiment of the invention adopts the technical principles of coalescence adsorption and double-filter material filtration, and specifically comprises the following steps: the liquid coming from the vertical high-efficiency pressure separator enters the turbulent oil removal component 18 to carry out vortex rotation, the generated centrifugal force moves oil gas inwards in a circular way, and the dispersed oil and light organic matters are removed in the step; the separated liquid enters micro-vortex adsorption coalescence filler, fine particles are mainly agglomerated into large particles in the step, and fine oil droplets are agglomerated into large oil droplets; and (4) filtering the coalesced liquid in a double-filter material filter layer, and adsorbing and intercepting particles and oil droplets through the double-filter material filter layer.
The embodiment of the invention changes the mode of the traditional metering station, adopts the modes of high-efficiency water diversion, sewage treatment and on-site reinjection in the metering station, is realized by processes of air entrainment rotational flow, high-efficiency coalescence settling, turbulent flow filtration and the like, and is an effective way for improving the treatment efficiency and the treatment effect.
The above description is only a preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention, and modifications, modifications or equivalents thereof, which may occur to those skilled in the art, are included within the scope of the present invention.
Claims (6)
1. The utility model provides a multi-functional water treatment facilities that divides in advance in oil field which characterized in that: the device comprises an air-entrapping cyclone, a vertical high-efficiency pressure separator and a turbulent flow coalescence filter which are sequentially connected, wherein the air-entrapping cyclone comprises an air-flotation separation cylinder, a cyclone cylinder and an oil collecting pipe which are sequentially and concentrically sleeved from outside to inside, the bottom end of the cyclone cylinder extends out of the air-flotation separation cylinder, the bottom end of the oil collecting pipe extends out of the cyclone cylinder, a gas circulating pipe for discharging gas extends out of the top of the air-flotation separation cylinder, and a water guide pipe is arranged at the bottom of the air-flotation separation cylinder; the top ends of the cyclone cylinder and the oil collecting pipe are provided with openings, the bottom of the cyclone cylinder is provided with a sewage pipe, the sewage pipe is also provided with a dissolved air inlet connected with a dissolved air pump, and the dissolved air is conveyed to the cyclone cylinder through the dissolved air inlet;
an oil overflow pipe extends out of the top of the vertical high-efficiency pressure separator, a drain outlet extends out of the bottom of the vertical high-efficiency pressure separator, an oil overflow layer communicated with the oil overflow pipe, a micro-vortex coalescence adsorption packing layer, a sedimentation separation zone connected with the output end of the air-entraining swirler, an inclined plate or inclined pipe packing layer, a purified water layer and a sludge sedimentation layer communicated with the drain outlet are arranged in the vertical high-efficiency pressure separator from top to bottom, and the outer part of the purified water layer is connected with the turbulent coalescence filter correspondingly; the output end of the air-entraining swirler connected with the settling separation zone is also provided with a dissolved air inlet connected with a dissolved air pump, and the dissolved air is conveyed to the settling separation zone through the dissolved air inlet;
the top of the turbulent flow coalescence filter extends out of an oil collecting pipe, the bottom of the turbulent flow coalescence filter extends out of a water outlet, a turbulent flow oil removing component and a micro-vortex coalescence adsorption packing layer are respectively arranged in the turbulent flow coalescence filter close to the top, and a double-filter material filtering layer is arranged close to the bottom.
2. The oil field multifunctional pre-diversion water treatment equipment as claimed in claim 1, wherein: the air flotation separation cylinder and the water guide pipe are communicated in a U-shaped communicating pipe arrangement mode, a water purification tank connected with an outlet of the water guide pipe is arranged at the position, close to the top, of the air flotation separation cylinder, and an outlet of the water purification tank is connected with a sedimentation separation area of the vertical efficient pressure separator.
3. The oil field multifunctional pre-diversion water treatment equipment as claimed in claim 1, wherein: the outside water purification layer department that corresponds of vertical high-efficient pressure separator connects gradually water pump inlet tube, water pump and water pump outlet pipe, the turbulent flow deoiling component connection of water pump outlet pipe end and turbulent flow coalescence filter.
4. The oil field multifunctional pre-diversion water treatment equipment as claimed in claim 1, wherein: and a water collecting cabin connected with an inlet of the water guide pipe is arranged at the bottom of the air floatation separation cylinder.
5. The oil field multifunctional pre-diversion water treatment equipment as claimed in claim 1, wherein: the filler filled in the double-filter-material filtering layer is quartz sand and anthracite, or carborundum and anthracite, or quartz sand and walnut shells.
6. The oil field multifunctional pre-diversion water treatment equipment as claimed in claim 1, wherein: the air-entraining cyclone, the vertical high-efficiency pressure separator and the turbulent flow coalescence filter are all of tank structures.
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| CN202111555306.XA CN114212905A (en) | 2021-12-18 | 2021-12-18 | A kind of oil field multifunctional pre-separation water treatment equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003416A (en) * | 2023-07-20 | 2023-11-07 | 西安向晨雅惠石油科技有限公司 | Closed continuous type oily sewage high-efficiency treatment device |
| WO2024244940A1 (en) * | 2023-06-01 | 2024-12-05 | 中海石油(中国)有限公司 | Device and method for treating gas-bearing oilfield produced water on the basis of vertical shallow air flotation |
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