CN116589010B - Three-phase separator with backwashing function for petroleum sewage treatment - Google Patents
Three-phase separator with backwashing function for petroleum sewage treatment Download PDFInfo
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- CN116589010B CN116589010B CN202310494905.8A CN202310494905A CN116589010B CN 116589010 B CN116589010 B CN 116589010B CN 202310494905 A CN202310494905 A CN 202310494905A CN 116589010 B CN116589010 B CN 116589010B
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- oil
- fixedly connected
- sewage
- petroleum
- natural gas
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- 239000010865 sewage Substances 0.000 title claims abstract description 84
- 239000003208 petroleum Substances 0.000 title claims abstract description 71
- 238000011001 backwashing Methods 0.000 title claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 152
- 239000003345 natural gas Substances 0.000 claims abstract description 76
- 238000000926 separation method Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000011010 flushing procedure Methods 0.000 claims abstract description 19
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 46
- 235000019198 oils Nutrition 0.000 description 42
- 235000019476 oil-water mixture Nutrition 0.000 description 30
- 239000012535 impurity Substances 0.000 description 7
- 238000004544 sputter deposition Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to the field of petroleum sewage separation, in particular to a three-phase separator with a back flushing function for petroleum sewage treatment. The utility model provides a three-phase separator for oil sewage treatment has back flush function, including the base, the base is provided with the knockout drum, knockout drum fixedly connected with advances oil pipe, goes out oil pipe, sewage discharge pipeline, wet return pipeline and admission line, the knockout drum is inside to be provided with the gas-liquid separation subassembly that is used for natural gas and oil sewage to separate, the knockout drum is inside to be provided with the drainage subassembly that is used for oil sewage and natural gas drainage, the knockout drum bottom is provided with the subassembly that admits air that is used for oil and sewage to separate, the subassembly that admits air is provided with the pressure accumulation subassembly that is used for preventing sewage backward flow entering admission line. The oil and the separation assembly are matched to enable the oil to mutually offset and separate natural gas in the oil, the air inlet assembly drives oil drops to be in staggered contact through bubbles to form oil drops, the movement range of the bubbles is increased, the separation efficiency of sewage and the oil is improved, and the separation effect is enhanced.
Description
Technical Field
The invention relates to the field of petroleum sewage separation, in particular to a three-phase separator with a back flushing function for petroleum sewage treatment.
Background
Crude oil produced on an oil field is mostly accompanied with a large amount of petroleum sewage, the petroleum sewage consists of natural gas, petroleum and sewage, the petroleum sewage is usually separated from the natural gas, petroleum and sewage by a three-phase separator, the sewage in the petroleum sewage is separated and discharged by the three-phase separator, and the natural gas and the petroleum are separated at the same time, so that the subsequent use is convenient.
At present, the three-phase separator adopted in the oil field realizes gas-liquid separation by using an impact baffle, petroleum sewage is subjected to reversing through a single impact baffle to separate natural gas, the separation process is simple, the natural gas in the petroleum sewage cannot be separated completely, and the air flotation separation is a method for separating petroleum from sewage, but the existing air flotation separation bubbles have limited moving range in the petroleum sewage, so that the amount of oil droplets is small in adsorption, and the separation of smaller oil droplets is not thorough.
Disclosure of Invention
The invention provides a three-phase separator with a back flushing function for petroleum sewage treatment to solve the problems, which aims to overcome the defects that the existing three-phase separator can not thoroughly separate natural gas, the range of air floatation separation bubbles for adsorbing oil beads is small and the separation of smaller oil drops is not thorough.
The technical implementation scheme of the invention is as follows: the utility model provides a three-phase separator for oil sewage treatment has backwash function, the on-line screen storage device comprises a base, the base is provided with the knockout drum, knockout drum fixedly connected with advances oil pipe, knockout drum fixedly connected with goes out oil pipe, knockout drum fixedly connected with sewage discharge pipeline, knockout drum fixedly connected with and intercommunication have return water pipe, sewage discharge pipeline and return water pipe intercommunication, knockout drum fixedly connected with admission line, knockout drum top fixedly connected with mist catcher, fixedly connected with return air pipe between mist catcher and the admission line, return air pipe fixedly connected with and intercommunication have the pipeline of giving vent to anger, advance oil pipe fixedly connected with baffle, the knockout drum is inside to be provided with the gas-liquid separation subassembly that is used for natural gas and oil sewage separation, the inside drainage subassembly that is used for oil sewage and natural gas drainage that is provided with of knockout drum, gas-liquid separation subassembly and drainage subassembly cooperation drive the inside natural gas and the separation of oil water mixture, the knockout drum bottom is provided with the inlet subassembly that is used for accelerating oil and sewage separation, the inlet subassembly is through to the bubble of driving in the petroleum water mixture, the inlet subassembly is provided with the subassembly that is used for preventing the pressure accumulation sewage and flows back into the admission line.
More preferably, the gas-liquid separation assembly comprises a rotary table, the rotary table is rotationally connected to the separating tank, the rotary table is provided with a drainage block, a deflector hole is formed in the circumference of the rotary table, the rotary table is fixedly connected with fan blades, a liquid storage cavity is formed in the rotary table, and a centrifugal hole is formed in the circumference of the liquid storage cavity.
More preferably, the deflector aperture has an L-shaped configuration.
More preferably, the drainage assembly comprises a conical drainage plate, the conical drainage plate is fixedly connected to the separation tank, a diversion groove is formed in the circumference of the conical drainage plate, an air vent groove is formed in the circumference of the conical drainage plate, a water outlet hole is formed in the baffle groove of the conical drainage plate, a groove communicated with the water outlet hole is formed in the circumference of the conical drainage plate, a water return pipeline is communicated with the groove, and a cone diversion block is fixedly connected to the conical drainage plate.
More preferably, the baffle slot is formed by more than three straight slots, and the adjacent straight slots form an included angle structure.
More preferably, the conical drainage plate is provided with a cleaning hole at the bending part of the Z-shaped structure of the baffle slot, and the cleaning hole is in a barb shape.
More preferably, the cone diversion block is circumferentially provided with diversion trenches, and the diversion trenches positioned at the upper side and the lower side of the cone diversion block are staggered.
More preferably, the air inlet assembly comprises a plurality of rotating annular plates which are more than two, the rotating annular plates are stacked to be frustum-shaped, the lower rotating annular plates are rotationally connected to the separating tank, the adjacent rotating annular plates are rotationally connected, the rotating annular plates are circumferentially provided with first air outlet holes, the upper rotating annular plates are fixedly connected with the opposite-flushing cylinders, the opposite-flushing cylinders are circumferentially provided with second air outlet holes, the separating tank is slidably connected with a sliding circular table, the sliding circular table is uniformly provided with annular air grooves, the annular air grooves are provided with air inlet holes, the sliding circular table is fixedly connected with a partition plate, and a pressure spring is arranged between the sliding circular table and the separating tank.
More preferably, the first air outlet holes deflect towards the tangential direction of the rotating annular plate, and the first air outlet holes on the adjacent rotating annular plates face symmetrically, and the second air outlet holes incline downwards.
More preferably, the pressure accumulation assembly comprises a fixed sliding sleeve, the fixed sliding sleeve is fixedly connected with a sliding round table, a through hole is formed in the inner wall of the fixed sliding sleeve, a limiting block is slidably connected with the fixed sliding sleeve, a sealing plate is fixedly connected with the limiting block, a reset spring is fixedly connected between the fixed sliding sleeve and the limiting block, a fixed block is arranged on an air inlet pipeline, the limiting block is in limiting sliding fit with the fixed block, and the air inlet pipeline is in sliding connection with the fixed sliding sleeve.
Compared with the prior art, the invention has the following advantages: 1. the petroleum sewage and the rotary table are matched to separate natural gas in the petroleum sewage through collision and centrifugation, the baffle plate prevents oil droplets from being sputtered and attached to the inner wall of the separation tank, the baffle holes change the moving direction of the baffle plates to enable opposite flushing to occur between the petroleum sewage, and the natural gas in the petroleum sewage is discharged and released again, so that the natural gas is separated more thoroughly.
2. The oil-water mixture is collided and reversed when flowing downwards through the diversion trench, natural gas in the oil-water mixture is released, the natural gas in the oil-water mixture is ensured to be thoroughly separated, the natural gas and the oil-water mixture are shunted through the cone diversion block, the natural gas and the oil-water mixture are enabled to flow in a staggered mode, the natural gas and the oil-water mixture are prevented from opposite impact to prevent the oil-water mixture from falling down, and the natural gas and the ventilation trench are matched to form a gas curtain to prevent oil drops from being sputtered to the inner wall of the separation tank during gas-liquid separation.
3. The annular air groove is matched on the natural gas and the sliding round table, the sliding round table is pushed to drive the fixed sliding sleeve to slide downwards, the limiting block and the wedge block are relatively slid, when the pressure in the annular air groove is increased to be relieved by the limiting block and the limiting block, the natural gas quickly enters the separation tank through the first air outlet along the gap between the sliding round table and the rotating annular plate, and meanwhile, the natural gas quickly enters the separation tank through the second air outlet on the opposite flushing cylinder, so that petroleum sewage backflow caused by low initial pressure is prevented.
4. The natural gas and the first venthole cooperation drive and rotate the annular plate and take place the staggered rotation, and the exhaust natural gas drives the oil water mixture and carries out the staggered contact, makes the mutual absorption of oil drop staggered contact in the oil water mixture form the oil pearl, and the natural gas carries out the offset by the second venthole discharge of downward sloping to the bubble of upward movement in the hedging section of thick bamboo simultaneously and increases the bubble adsorption area, improves the oil water separation effect.
5. Natural gas is back flush baffle groove back flush through barb shape clearance hole and bends the department impurity pile up, prevents that impurity in the oil-water mixture from producing in bending the department and piling up, and sewage is just washed through the last play water Kong Duishe chute of toper drainage board after filtering, prevents that impurity in the oil-water mixture from piling up in the baffle groove, reduces gas-liquid separation effect.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of a three-dimensional structure of the present invention.
FIG. 3 is a schematic perspective view of a gas-liquid separation module according to the present invention.
Fig. 4 is a schematic perspective view of a drainage assembly according to the present invention.
Fig. 5 is a schematic perspective view of a cleaning hole according to the present invention.
Fig. 6 is a schematic perspective view of a cone diversion block according to the present invention.
Fig. 7 is a schematic perspective view of an air intake assembly according to the present invention.
Fig. 8 is a schematic view of a part of a perspective structure of an air intake assembly according to the present invention.
Fig. 9 is a schematic perspective view of the accumulator assembly of the present invention.
Wherein the above figures include the following reference numerals: 101-base, 102-separator tank, 103-oil inlet pipe, 104-oil outlet pipe, 105-sewage outlet pipe, 106-return pipe, 107-air inlet pipe, 108-mist catcher, 109-return pipe, 110-air outlet pipe, 111-baffle, 2-gas-liquid separation component, 201-rotary table, 202-drainage block, 203-deflector aperture, 204-fan blade, 205-liquid storage cavity, 206-centrifuge aperture, 3-drainage component, 301-conical drainage plate, 302-deflector aperture, 303-aeration slot, 304-water outlet aperture, 305-cone deflector block, 306-cleaning aperture, 307-deflector aperture, 4-air inlet component, 401-rotary annular plate, 402-first air outlet aperture, 403-deflector cylinder, 404-second air outlet aperture, 405-sliding circular table, 406-annular air slot, 407-408-baffle plate, 409-pressure spring, 5-accumulator component, 501-fixed sliding sleeve, 502-through aperture, 503-stopper, 504-return spring, 505-fixed block.
Description of the embodiments
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A three-phase separator with back flushing function for petroleum sewage treatment is shown in fig. 1 and 2, and comprises a base 101, wherein the base 101 is fixedly connected with a separating tank 102, the separating tank 102 is fixedly connected with an oil inlet pipeline 103 for conveying petroleum sewage, the separating tank 102 is fixedly connected and communicated with an oil outlet pipeline 104 for discharging separated petroleum, the separating tank 102 is fixedly connected with a sewage discharge pipeline 105 for discharging separated sewage, the separating tank 102 is fixedly connected with a water return pipeline 106 for backflow flushing of sewage, the sewage discharge pipeline 105 is communicated with the water return pipeline 106, the separating tank 102 is fixedly connected with an air inlet pipeline 107, the top of the separating tank 102 is fixedly connected with a mist catcher 108, the mist catcher 108 is fixedly connected with the air inlet pipeline 107 and communicated with the air return pipeline 109, the return air pipeline 109 is fixedly connected and communicated with an air outlet pipeline 110 for discharging natural gas, the inside of the separating tank 102 is rotationally connected with a gas-liquid separating component 2 for separating natural gas from petroleum sewage, the oil inlet pipeline 103 is fixedly connected with a baffle 111, the baffle 111 cuts off sputtering oil droplets formed by separating the natural gas from the petroleum, the sputtering oil droplets are prevented from being attached to the inner wall of the separating tank 102, the inside of the separating tank 102 is fixedly connected with a drainage component 3 for guiding the petroleum sewage and the natural gas, the gas-liquid separating component 2 and the drainage component 3 are matched to drive the inside of the separating tank 102 to separate the natural gas from the petroleum sewage, the bottom of the separating tank 102 is rotationally connected with an air inlet component 4 for separating the petroleum from the sewage, the air inlet component 4 drives the natural gas into a bubble in the petroleum sewage mixture, the bubble moves upwards to attach the oil droplets, the liquid level driven by the oil droplets realizes the separation of the petroleum from the sewage, the air inlet assembly 4 is fixedly connected with an accumulator assembly 5 for preventing sewage from flowing back into the air inlet pipeline 107.
As shown in fig. 3, the gas-liquid separation assembly 2 comprises a rotary table 201, the rotary table 201 is of a hollow round table structure, the rotary table 201 is rotationally connected to a separation tank 102, a drainage block 202 is fixedly connected to the periphery of the rotary table 201, a deflector hole 203 is circumferentially arranged on the rotary table 201, the deflector hole 203 is of an L-shaped structure, the flow direction of petroleum sewage is changed to form a hedging, natural gas is further separated, a fan blade 204 is fixedly connected to the inner wall of the rotary table 201, a liquid storage cavity 205 is arranged in the rotary table 201, a centrifugal hole 206 is circumferentially arranged at the position of the liquid storage cavity 205, petroleum collides with the rotary table 201, and after the flow direction is changed to collide with each other through the deflector hole 203, the separation effect of the natural gas is enhanced, and meanwhile, the petroleum thrown out through the drainage block 202 and the centrifugal hole 206 is hedging again, so that the separation degree of the natural gas is further enhanced.
As shown in fig. 4-6, the drainage component 3 comprises a conical drainage plate 301, the conical drainage plate 301 is of an inverted cone-shaped shell structure, the conical drainage plate 301 is fixedly connected to the separation tank 102, the conical drainage plate 301 is circumferentially provided with a diversion trench 302, the diversion trench 302 is formed by three straight trenches, an included angle structure is formed between every two adjacent straight trenches, two bends are formed, the conical drainage plate 301 is provided with a back flushing cleaning hole 306 at two bending positions of the included angle of the diversion trench 302, impurity accumulation at the bending positions is prevented, the diversion of the diversion trench 302 to an oil-water mixture is hindered, the cleaning hole 306 is in a barb shape, the oil-water mixture is prevented from entering the lower part of the separation tank 102 through the cleaning hole 306, the conical drainage plate 301 is circumferentially provided with an aeration trench 303, natural gas ascends along the aeration trench 303 to form a gas curtain, sputtering oil beads are prevented from being attached to the inner wall of the separation tank 102, the periphery of the conical drainage plate 301 is provided with a water outlet 304, the back flushing pipe 106 is communicated with the groove, the back flushing hole 302 is prevented from being accumulated, the back flushing hole 302 is prevented from being blocked, the water-water mixture is prevented from being led to the two sides of the cone-shaped water mixture, the water mixture is prevented from being in the tapered structure, the water mixture is prevented from being led to the water mixture from falling down on the two sides by the cone-shaped water mixture, and the water mixture is prevented from being led to the water to the upper by the cone-shaped, the water mixture is prevented from being down by the water-down to the water-shaped to be a cone-shaped water-shaped, the water mixture 307.
When the petroleum sewage is subjected to three-phase separation to separate the petroleum sewage, the petroleum sewage enters the separating tank 102 from the oil inlet pipeline 103, then the petroleum collides with the rotating platform 201 to discharge part of natural gas in the petroleum sewage, the baffle 111 cuts off the petroleum after the collision sputtering to prevent oil droplets from being attached to the inner wall of the separating tank 102, then part of the petroleum sewage after the collision moves downwards along the peripheral inclined plane of the rotating platform 201 and the drainage block 202, meanwhile, the drainage block 202 is pushed to drive the rotating platform 201 to rotate, part of the petroleum sewage enters the baffle hole 203 in the downward movement process of the peripheral inclined plane petroleum of the rotating platform 201, the baffle hole 203 changes the movement direction of the petroleum sewage to enable the opposite flushing between the petroleum sewage to occur, the natural gas in the petroleum is discharged and released again, meanwhile, part of the petroleum sewage falls from the oil inlet pipeline 103 to drive the fan blade 204 to drive the rotating platform 201 to rotate, petroleum sewage enters the liquid storage cavity 205 after passing through the fan blades 204, the petroleum sewage in the liquid storage cavity 205 is thrown out along the centrifugal hole 206 through the rotation of the rotary table 201, at the moment, the petroleum drops along the peripheral inclined plane of the rotary table 201 and is thrown out of the centrifugal hole 206 to be opposite to each other again, natural gas in the petroleum sewage is further released, the natural gas is more thoroughly separated, the petroleum sewage is separated into an oil-water mixture after gas-liquid separation and drops to the periphery of the conical drainage plate 301, at the moment, the oil-water mixture drops into the baffle groove 302, the oil-water mixture flows downwards along the baffle groove 302 due to gravity, because the baffle groove 302 is of a Z-shaped structure, the oil-water mixture is switched in two directions when flowing along the baffle groove 302, the oil-water mixture collides with the inner wall of the baffle groove 302 when the direction is switched, and the natural gas in the oil-water mixture is further released, the natural gas in the petroleum water mixture is thoroughly separated, then the oil-water mixture is converged towards the axis of the conical flow guiding plate 301 and falls down to the cone flow guiding block 305, and the oil-water mixture falls to the lower layer of the separation tank 102 through the flow guiding groove 307 on the cone flow guiding block 305 to separate the petroleum sewage from the petroleum.
After the oil-water mixture is separated by air floatation to form layering phenomenon, the oil outlet pipeline 104 is opened to discharge oil, meanwhile, part of separated sewage is directly discharged, part of sewage enters a cavity formed by the inner wall of the separation tank 102 and the groove on the conical drainage plate 301 along the water return pipeline 106 after being filtered, then the groove 302 is washed by the water outlet hole 304 on the conical drainage plate 301, impurities in the oil-water mixture are prevented from accumulating in the baffle groove 302, the gas-liquid separation effect is reduced, and the sewage contained in the petroleum sewage is separated and discharged in a circulating way.
Example 2
On the basis of embodiment 1, as shown in fig. 7 and 8, the air inlet assembly 4 comprises four rotating annular plates 401 which are connected with each other in a rotating way, the four rotating annular plates 401 form a cone-shaped shell, the lower rotating annular plate 401 is connected with the separating tank 102 in a rotating way, a first air outlet hole 402 is circumferentially arranged on the rotating annular plate 401, the first air outlet hole 402 deflects towards the tangential direction of the rotating annular plate 401, the first air outlet holes 402 on the adjacent rotating annular plates 401 are symmetrically arranged towards the tangential direction, the rotating annular plates 401 are fixedly connected with a hedging cylinder 403, a second air outlet hole 404 is circumferentially arranged on the hedging cylinder 403, the second air outlet hole 404 deflects downwards along a horizontal line, the separating tank 102 is slidably connected with a sliding circular table 405, the inside of the sliding circular table 405 is of a cylindrical hollow circular table structure, three annular air grooves 406 are uniformly arranged in the sliding circular table 405, the annular air grooves 406 are provided with air inlet holes 407, the sliding circular table 405 are fixedly connected with partition plates 408, a pressure spring 409 is arranged between the sliding circular table 405 and the separating tank 102, the first air outlet holes 402 discharge natural gas to drive oil drops in an oil-water mixture to contact and adsorb oil drops to form lifting balls, and the air drops are conveniently to lift the air drops, and the air drops are simultaneously matched with the second air outlet hole 404 to enhance the air outlet hole and the air outlet opening.
As shown in fig. 9, the pressure accumulating assembly 5 includes a fixed sliding sleeve 501, the fixed sliding sleeve 501 is fixedly connected to a sliding circular table 405, symmetrical through holes 502 are formed in the inner wall of the fixed sliding sleeve 501, two limiting blocks 503 are slidably connected to the fixed sliding sleeve 501, a sealing plate is fixedly connected to the limiting blocks 503, a return spring 504 is fixedly connected between the fixed sliding sleeve 501 and the limiting blocks 503, an air inlet pipeline 107 is fixedly connected to two fixing blocks 505, the limiting blocks 503 are in limit sliding fit with the fixing blocks 505, the air inlet pipeline 107 is slidably connected with the fixed sliding sleeve 501, the limiting blocks 505 are in limit fit with the limiting blocks 503 to enable the natural gas pressure to be increased, when the sliding circular table 405 slides to release the partition of the first air outlet hole 402 and the second air outlet hole 404, the natural gas is rapidly fed into a mixture of oil and water by the first air outlet hole 402 and the second air outlet hole 404, and the natural gas and the mixture of oil and water form a counter-flushing, and the mixture of the natural gas and the oil and water is prevented from flowing back.
When oil-water separation is carried out, the separated natural gas is extracted through the mist catcher 108 and enters the air return pipeline 109, part of the natural gas is discharged through the air outlet pipeline 110, part of the natural gas enters the air inlet pipeline 107, the natural gas enters the sliding circular table 405 and the opposite punching cylinder 403 through the fixed sliding sleeve 501, at the moment, the sliding circular table 405 is tightly attached to the rotating annular plate 401 to block the first air outlet hole 402, the blocking plate 408 is tightly attached to the opposite punching cylinder 403 to block the second air outlet hole 404, impurities in the lower sewage are prevented from blocking the first air outlet hole 402 and the second air outlet hole 404, the water-oil separation effect is influenced, at the moment, the natural gas enters the annular air groove 406 along the air inlet hole 407 on the sliding circular table 405, the pressure in the annular air groove 406 is increased along with continuous injection of the natural gas, the sliding circular table 405 is pushed to drive the fixed sliding sleeve 501 to slide downwards, the sliding circular table 405 is pressed by the pressure spring 409, at the moment, the wedge block 502 is in limit fit with the limit block 503, at this moment, the pressure in the annular air groove 406 is accumulated, the pressure pushes the upper sealing plate of the limiting block 503 to slide and squeeze the reset spring 504, after the limiting block 503 and the fixed block 505 are released, the sliding circular table 405 drives the partition plate 408 to slide downwards, a gap is formed between the sliding circular table 405 and the rotating circular table 401, and meanwhile, the partition plate 408 and the second air outlet holes 404 are dislocated, natural gas in the annular air groove 406 rapidly diffuses towards the gap between the sliding circular table 405 and the rotating circular table 401, then the natural gas rapidly enters the separation tank 102 through the first air outlet holes 402, meanwhile, the natural gas rapidly enters the separation tank 102 through the second air outlet holes 404 on the opposite-flushing cylinder 403, so that sewage backflow caused by low initial pressure is prevented, and after the gas pressure between the rotating circular table 401 and the sliding circular table 405 is reduced, the pressure spring 409 pushes the sliding circular table 405 to reset upwards.
When natural gas passes through the rotating annular plate 401, as the first air outlet holes 402 on the adjacent rotating annular plate 401 are symmetrically arranged and face the tangential direction of the rotating annular plate 401, when the natural gas passes through the first air outlet holes 402, the natural gas discharge recoil force drives the rotating annular plate 401 to rotate, the adjacent rotating annular plate 401 rotates in opposite directions, the discharged natural gas drives the petroleum mixture to make staggered contact, so that oil drops in the oil-water mixture are adsorbed by staggered contact, the natural gas bubbles drive the oil drops to an oil layer, meanwhile, the natural gas in the opposite flushing cylinder 403 is discharged from the second air outlet holes 404, the air bubble movement range is increased by the second air outlet holes 404 along the downward inclined opposite direction, the oil-water separation effect is improved, after the natural gas bubbles drive the oil drops to the oil layer, the natural gas continues to move upwards until the oil layer is separated, and then the natural gas continues to rise, the natural gas near the central axis of the separation tank 102 is split by the diversion trench 307 on the cone diversion block 305, so that the natural gas and the oil-water mixture flow in a staggered way, the natural gas is prevented from blocking the falling of the oil-water mixture, the rest natural gas moves upwards by the ventilation trench 303, meanwhile, an air curtain is formed to prevent oil drops during gas-liquid separation from being sputtered to the inner wall of the separation tank 102, meanwhile, part of the gas enters the bending position of the diversion trench 302 from the cleaning hole 306 to be backflushed, the natural gas is enabled to perform gas impact on the bending position, impurities in the oil-water mixture are prevented from being accumulated at the bending position, the gas-liquid separation effect is weakened, meanwhile, the cleaning hole 306 is in a barb shape to prevent the oil-water mixture from entering the lower part of the separation tank 102 from the cleaning hole 306, the natural gas continues to move upwards and is extracted by the mist catcher 108 to enter the air return pipeline 109 again, thus the circulation is realized, and the three-phase separation of the petroleum sewage is discharged as much as possible.
While the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. The scope of the disclosure should, therefore, not be limited to the above-described embodiments, but should be determined not only by the following claims, but also by the equivalents of the following claims.
Claims (7)
1. The three-phase separator with the backwash function for petroleum sewage treatment is characterized by comprising a base (101), the base (101) is provided with a separating tank (102), an oil inlet pipeline (103) is fixedly connected to the top of the separating tank (102), an oil outlet pipeline (104) is fixedly connected to the middle of the separating tank (102), a sewage discharge pipeline (105) is fixedly connected to the lower part of the separating tank (102), a return pipeline (106) is fixedly connected and communicated with the separating tank (102), a gas inlet pipeline (107) is fixedly connected to the bottom of the separating tank (102), a mist catcher (108) is fixedly connected to the top of the separating tank (102), a return pipeline (109) is fixedly connected and communicated with the gas inlet pipeline (110), a baffle (111) is fixedly connected to the oil inlet pipeline (103), a gas-liquid separating component (2) for separating natural gas from petroleum sewage is arranged in the separating tank (102), a water inlet pipeline (105) is fixedly connected with the lower part of the separating tank and is communicated with the return pipeline (106), a water mixture is drained from the natural gas-liquid separating component (3) and is driven by the water mixture of the natural gas-liquid separating component (3) and the water-liquid separating component, an air inlet assembly (4) for accelerating the separation of petroleum and sewage is arranged at the bottom of the separation tank (102), air bubbles are driven into the petroleum sewage mixture by the air inlet assembly (4), and an pressure accumulation assembly (5) for preventing the sewage from flowing back into an air inlet pipeline (107) is arranged on the air inlet assembly (4);
the air inlet assembly (4) comprises a plurality of rotating annular plates (401), the rotating annular plates (401) are stacked to be frustum-shaped, the lower rotating annular plates (401) are rotationally connected to the separation tank (102), the adjacent rotating annular plates (401) are rotationally connected, the rotating annular plates (401) are circumferentially provided with first air outlet holes (402), the upper rotating annular plates (401) are fixedly connected with a hedging cylinder (403), the hedging cylinder (403) is circumferentially provided with second air outlet holes (404), the separation tank (102) is slidably connected with a sliding circular table (405), the sliding circular table (405) is uniformly provided with annular air grooves (406), the annular air grooves (406) are provided with air inlet holes (407), the sliding circular table (405) is fixedly connected with a partition plate (408), and a pressure spring (409) is arranged between the sliding circular table (405) and the separation tank (102);
the second air outlet holes (404) incline downwards, the first air outlet holes (402) on the adjacent rotating annular plates (401) are symmetrically arranged and face the tangential direction of the rotating annular plates (401), when natural gas passes through the first air outlet holes (402), the natural gas discharge recoil force drives the rotating annular plates (401) to rotate, and the rotating directions of the adjacent rotating annular plates (401) are opposite;
the pressure accumulation subassembly (5) is including fixed sliding sleeve (501), fixed sliding sleeve (501) fixed connection is in slip round platform (405), fixed sliding sleeve (501) inner wall is provided with through-hole (502), fixed sliding sleeve (501) sliding connection has stopper (503), stopper (503) fixedly connected with shrouding, fixedly connected with reset spring (504) between fixed sliding sleeve (501) and stopper (503), admission line (107) are provided with fixed block (505), stopper (503) and fixed block (505) spacing sliding fit, admission line (107) and fixed sliding sleeve (501) sliding connection.
2. The three-phase separator with the backwashing function for petroleum sewage treatment according to claim 1, wherein the gas-liquid separation assembly (2) comprises a rotary table (201), the rotary table (201) is rotatably connected to the separation tank (102), the rotary table (201) is provided with a drainage block (202), the rotary table (201) is circumferentially provided with a deflector hole (203), the rotary table (201) is fixedly connected with fan blades (204), a liquid storage cavity (205) is arranged in the rotary table (201), and a centrifugal hole (206) is circumferentially arranged at the position of the liquid storage cavity (205).
3. A three-phase separator with backwash function for petroleum wastewater treatment according to claim 2, characterized in that the baffle holes (203) are L-shaped.
4. A three-phase separator with backwash function for petroleum sewage treatment according to claim 3, characterized in that the drainage component (3) comprises a conical drainage plate (301), the conical drainage plate (301) is fixedly connected with the separation tank (102), the conical drainage plate (301) is circumferentially provided with a diversion groove (302), the conical drainage plate (301) is circumferentially provided with a ventilation groove (303), the conical drainage plate (301) is provided with a water outlet (304) in the diversion groove (302), the periphery of the conical drainage plate (301) is provided with a groove communicated with the water outlet (304), the water return pipeline (106) is communicated with the groove, and the bottom of the conical drainage plate (301) is fixedly connected with a cone diversion block (305).
5. A three-phase separator with backwash function for petroleum wastewater treatment according to claim 4, wherein the baffle-tank (302) is formed by more than three straight-tanks and the adjacent straight-tanks are in an angle structure.
6. The three-phase separator with a back flushing function for petroleum sewage treatment according to claim 5, wherein the conical drainage plate (301) is provided with a cleaning hole (306) at the bending part of the Z-shaped structure of the baffle groove (302), and the cleaning hole (306) is in a barb shape.
7. The three-phase separator with a back flushing function for petroleum sewage treatment according to claim 4, wherein the cone diversion block (305) is circumferentially provided with diversion trenches (307), and the diversion trenches (307) positioned on the upper side and the lower side of the cone diversion block (305) are staggered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310494905.8A CN116589010B (en) | 2023-05-05 | 2023-05-05 | Three-phase separator with backwashing function for petroleum sewage treatment |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204121936U (en) * | 2014-10-22 | 2015-01-28 | 西南石油大学 | A kind of novel combination type three phases separator |
| CN113694566A (en) * | 2021-09-03 | 2021-11-26 | 严瑾 | Oil field three-phase separation process and separation system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204121936U (en) * | 2014-10-22 | 2015-01-28 | 西南石油大学 | A kind of novel combination type three phases separator |
| CN113694566A (en) * | 2021-09-03 | 2021-11-26 | 严瑾 | Oil field three-phase separation process and separation system |
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| CN116589010A (en) | 2023-08-15 |
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