CN219279578U - Fluidized bed deoiling integrated equipment - Google Patents
Fluidized bed deoiling integrated equipment Download PDFInfo
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- CN219279578U CN219279578U CN202222810499.5U CN202222810499U CN219279578U CN 219279578 U CN219279578 U CN 219279578U CN 202222810499 U CN202222810499 U CN 202222810499U CN 219279578 U CN219279578 U CN 219279578U
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Abstract
The utility model discloses fluidized bed oil removal integrated equipment which comprises an upper fluidized bed layer, a coalescing layer, a lower fluidized bed layer and a jet aerator. After the oily wastewater enters the equipment, the micro-bubbles adhere to oil particles and solid particles in the wastewater on the upper fluidized bed layer and the lower fluidized bed layer, and the oil particles and the solid particles are wrapped and trapped to float upwards. In the coalescing layer, tiny oil particles are adsorbed and coalesced into large oil droplets by the surface of the coalescing material, and are adhered by the floating tiny bubbles, so that the tiny oil droplets are separated from the surface of the coalescing material to float upwards. The oil particles and solid particles are finally floated on the surface of the upper fluidized bed layer under the wrapping of the tiny bubbles and discharged through an oil skimming groove, gas is discharged from the top of the device, and produced water is discharged through an overflow pipe. The beneficial effects of the utility model are as follows: micro-bubbles generated by jet aeration are fully mixed with oily wastewater, micro-oil particles and solid particles in the wastewater are adhered by the micro-bubbles, the floating mobility is enhanced, and the oil removal effect is remarkably improved under the double functions of coalescence and air floatation.
Description
Technical Field
The utility model relates to the technical field of oil removal treatment of oily wastewater, in particular to fluidized bed-based oil removal integrated equipment which is formed by organically combining coalescence oil removal, jet aeration and rotational flow air floatation.
Background
Oily wastewater is common in petrochemical industry and mostly comes from the petroleum dehydration process section in the petroleum refining process flow. For some oily wastewater with higher oil content and larger oil slick granularity, the light part capable of floating upwards is skimmed through gravity sedimentation treatment, and for some oily wastewater with low oil content, small oil slick granularity or higher emulsification degree, dirty oil-water separation is difficult to realize, and in many cases, the oily wastewater is directly discharged into a downstream sewage treatment plant for deep treatment. Because the refining process flow can often fluctuate, the oil content, the oil-containing granularity and the emulsification degree of the discharged oil-containing wastewater also fluctuate, the downstream advanced treatment process is very unfavorable, and the drainage exceeding accident is often caused.
The existing dirty oil-water separation technology mainly comprises modified fiber adsorption, aerated flotation and coagulation, advanced oxidation, steam stripping, surface coalescence, hydrocyclone, microporous membrane separation and the like besides simple gravity sedimentation, and the process methods have selectivity and limitation, so that the stable standard of the water quality index of the effluent can be realized when the oil content and emulsification in the dirty oil water have large fluctuation.
Disclosure of Invention
The utility model aims to provide fluidized bed oil removal integrated equipment, which solves the problems in the background art.
In order to achieve the above object, the present utility model provides the following technical solutions:
a fluidized bed oil removal integrated apparatus comprising:
and the ejector is used for aeration and generating micro bubbles.
And the jet pump provides jet kinetic energy for the jet device.
The jet aeration inlet can generate a rotational flow effect.
And the aggregation layer can aggregate the tiny oil particles into big oil beads.
And the homogenizing layer is used for homogenizing floating bubbles on the lower fluidized bed layer.
And the water stop plate is used for separating the lower fluidized bed layer from the inlet of the bottom overflow pipe.
The upper fluidized bed layer is used for capturing oil particles and solid particles in the oily wastewater, increasing the floating mobility of the oil particles and the solid particles and collecting the oil particles and the solid particles into the skimming oil tank.
A lower fluidized bed for capturing oil particles and solid particulates escaping from the upper fluidized bed and coalescing layer, increasing the floating upward mobility of these oil particles and solid particulates.
And the bottom overflow pipe is used for conveying produced water to the overflow water tank.
And the overflow water tank is used for controlling the liquid level position of the upper fluidized bed layer and discharging produced water.
And the skimming groove is used for receiving the floating oil particles and solid particles and discharging the floating oil particles and the solid particles through the skimming pipe.
As a still further scheme of the utility model, an exhaust pipe is arranged at the top of the fluidized bed oil removal integrated equipment, a coalescing layer is arranged in the middle position, an upper fluidized bed layer is arranged above the coalescing layer, a lower fluidized bed layer is arranged below the coalescing layer, a water stop plate is arranged at the position, close to the bottom, of the fluidized bed oil removal integrated equipment, a suction inlet of a jet pump is arranged at the lower part of the water stop plate, an outlet of the jet pump is connected with a water inlet of a jet device, an outlet of the jet device is arranged at the upper part of the water stop plate and enters the integrated equipment from the tangential direction, an inlet of an overflow pipe is arranged at the lower part of the water stop plate, an outlet of the overflow pipe is connected with the bottom of the overflow water tank, and a vent pipe is arranged at the upper part of the overflow water tank.
As a still further proposal of the utility model, a nitrogen storage tank is communicated with an air suction pipe of the ejector, a breathing port is arranged at the top of the nitrogen storage tank, and an air inlet pipe is also arranged on the nitrogen storage tank and communicated with a nitrogen source for supplementing the consumed nitrogen.
As still further aspects of the present utility model, the nitrogen storage tank is provided with an air return pipe which communicates with the gas collecting pipe.
As a still further proposal of the utility model, the top of the fluidized bed oil removal integrated equipment is provided with an exhaust pipe which is communicated with a gas collecting pipe.
As still further scheme of the utility model, nitrogen in the nitrogen storage tank enters the ejector through the ejector air suction pipe, is converted into micro bubbles in the high-speed jet and enters the fluidized bed oil removal integrated equipment along with the jet, and then sequentially passes through the lower fluidized bed layer, the aggregation layer and the upper fluidized bed layer, enters the gas collection pipe from the top exhaust pipe of the integrated equipment, and finally returns to the nitrogen storage tank through the gas return pipe, thereby realizing nitrogen recycling.
As a still further proposal of the utility model, the dirty oil tank is communicated with the oil skimming pipe, the top of the dirty oil tank is provided with a vent pipe which is communicated with the gas collecting pipe, part of nitrogen can be brought into the dirty oil tank during oil skimming, the brought nitrogen can enter the gas collecting pipe from the vent pipe of the dirty oil tank, and finally returns to the nitrogen storage tank through the gas return pipe.
As a still further proposal of the utility model, the upper part of the overflow water tank is provided with a vent pipe which is communicated with a gas collecting pipe to communicate the upper space of the fluidized bed oil removal integrated equipment with the upper space of the overflow water tank.
Compared with the prior art, the utility model has the beneficial effects that: micro-bubbles generated by jet aeration are fully mixed with the oily wastewater, micro-oil particles and solid particles in the oily wastewater are adsorbed by the micro-bubbles, the buoyancy is increased, the floating fluidity is enhanced, and the oil removal effect of the oily wastewater is improved under the dual actions of air floatation and coalescence. Meanwhile, nitrogen sucked from the nitrogen storage tank through negative pressure generated by jet flow returns to the nitrogen storage tank after passing through the fluidized bed layer and the coalescing layer, so that nitrogen recycling is realized, and the problem of VOC generation is avoided.
Drawings
Fig. 1 is a schematic diagram of the principle and structure of fluidized bed oil removal integrated equipment.
FIG. 2 is a schematic diagram of a process flow of fluidized bed-based dirty oil-water separation.
In the figure: 1. a water inlet pipe 2, an oil skimming pipe 3, a water discharge pipe 4, an air suction pipe 5, an air discharge pipe 6, a jet aeration inlet 7, an oil skimming groove 8, a jet device 9, a jet pump 10, an overflow water tank 11, a coalescence layer 12, a homogenization layer 13, an upper fluidized bed layer 14, a lower fluidized bed layer 15, a water stop plate 16, an overflow pipe 17, an overflow water tank vent pipe 18, a fluidized bed oil removal integrated device 19, a gas return pipe 20, a nitrogen storage tank 21, an air inlet pipe 22, a breathing port 23, a dirty oil tank 24, a liquid level meter 25, a dirty oil water outer discharge port 26, a gas collecting pipe 27 and a dirty oil tank vent pipe
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a schematic structural diagram of a fluidized bed oil removal integrated apparatus includes:
the water inlet pipe 1 is arranged at the middle upper part of the upper fluidized bed layer 13 and is slightly lower than the oil skimming groove 7, and oily wastewater enters the upper fluidized bed layer 13 through the water inlet pipe 1.
And the skimming oil pipe 2 is communicated with the bottom of the skimming oil tank 7 and is used for discharging separated dirty oil water.
And a drain pipe 3 which is arranged at a position slightly lower than the top of the skimming groove 7 on the side surface of the overflow water tank 10 and is used for draining produced water.
The air suction pipe 4 is connected with the air suction port of the ejector in a butt joint mode and is used for sucking air.
And the exhaust pipe 5 is arranged at the top of the fluidized bed oil removal integrated equipment 18 and is used for exhausting gas.
And a jet aeration cutting inlet 6 is welded tangentially along the fluidized bed oil removal integrated equipment, and the gas-liquid mixture enters the lower fluidized bed layer at a high speed along the tangential direction and forms a rotational flow.
And an oil skimming groove 7 for receiving floating oil particles and solid particulate matters.
A jet pump 9 provides jet kinetic energy to the jet 8.
And a overflow tank 10 for controlling the liquid level of the upper fluidized bed 13 and discharging produced water.
And the coalescing layer 11 is arranged in the middle of the fluidized bed oil removal integrated equipment and is used for coalescing tiny oil particles in the oil-containing wastewater.
A homogenizing layer 12, which is arranged at a lower position of the coalescing layer 11, for homogenizing the air bubbles floating on the lower fluidized bed layer 14.
An upper fluidized bed layer 13 above the coalescing layer 11 for capturing minute oil particles and solid particulates in the oily wastewater, increasing the upward floating mobility of these oil particles and solid particulates, and collecting these oil particles and solid particulates into the skimming tank 7.
A lower fluidized bed layer 14 below the coalescing layer 11 for capturing fine oil particles and solid particulates escaping from the upper fluidized bed layer 13 and coalescing layer 11 and increasing the floating mobility of these oil particles and solid particulates.
A water-stop plate 15 for separating the lower fluidized bed 14 from the bottom inlet of the overflow pipe 16.
The overflow pipe 16 is used as a passage for the produced water to enter the overflow water tank.
And an overflow water tank vent pipe 17 which is communicated with the upper space of the fluidized bed oil removal integrated equipment and the upper space of the overflow water tank.
Further, the suction inlet of the jet pump 9 is arranged at the lower part of the water stop plate 15, the outlet of the jet pump 9 is connected with the water inlet of the jet device 8, and the water outlet of the jet device 8 is arranged at the upper part of the water stop plate 15 and is communicated with the jet aeration cutting inlet 6.
Further, the gas enters the jet device 8 through the air suction pipe 4, is converted into micro bubbles in the high-speed jet flow, enters the fluidized bed oil removal integrated device 18 along with the jet flow, sequentially passes through the lower fluidized bed layer 14, the homogenizing layer 12, the coalescing layer 11 and the upper fluidized bed layer 13, is discharged from the top exhaust pipe 5, and micro oil particles and solid particles in the oil-containing wastewater are adhered by the micro bubbles and float upwards to enter the oil skimming groove 7, and are discharged through an oil skimming pipe connected to the bottom of the oil skimming groove.
Referring to fig. 2, a schematic flow chart of a fluidized bed-based dirty oil-water separation process includes:
The dirty oil tank 23 is used for receiving the high-concentration dirty oil water discharged from the skimming oil pipe 2.
And the gas collecting pipe 26 is used for communicating the nitrogen storage tank 20, the dirty oil tank 23, the fluidized bed oil removal integrated equipment 18 and the overflow water tank 10.
Further, the nitrogen storage tank 20 is communicated with the air suction port of the ejector 8 through the air suction pipe 4, and a breathing port 22 is arranged at the top of the nitrogen storage tank 20, and an air inlet pipe 21 is further arranged on the nitrogen storage tank and communicated with a nitrogen source for supplementing consumed nitrogen.
Further, the nitrogen in the nitrogen storage tank 20 enters the ejector 8 through the air suction pipe 4, is converted into micro bubbles in the high-speed jet flow, enters the fluidized bed oil removal integrated device 18 along with the jet flow, sequentially passes through the lower fluidized bed layer 14, the coalescing layer 11 and the upper fluidized bed layer 13, enters the gas collection pipe 26 through the top exhaust pipe 5, and finally returns to the nitrogen storage tank 20 through the gas return pipe 19, thereby realizing the recycling of the nitrogen.
Further, the dirty oil tank 23 is communicated with the oil skimming pipe 2, the dirty oil tank vent pipe 27 is communicated with the gas collecting pipe 26, part of nitrogen is brought into the dirty oil tank 23 during oil skimming, and the dirty oil tank vent pipe 27 is communicated with the nitrogen storage tank 20 through the gas collecting pipe 26 and the gas return pipe 19. Meanwhile, the overflow water tank vent pipe 17 is also communicated with the top exhaust pipe 5 of the fluidized bed oil removal integrated device 18 through the gas collecting pipe 26, so that the influence on the liquid level balance due to nitrogen aggregation is avoided.
The working principle of the utility model is as follows: the oily wastewater enters from the upper part of the upper fluidized bed layer, flows downwards through the upper fluidized bed layer, the coalescing layer and the lower fluidized bed layer in sequence, and tiny bubbles generated by jet aeration enter from the bottom of the lower fluidized bed layer along the tangential direction, so that a cyclone effect is generated. In the downward flowing process of the oily wastewater, tiny oil particles and solid particles in the wastewater meet with the floating tiny bubbles, and the tiny bubbles can be adsorbed around the oil particles and the solid particles, so that the floating mobility of the oil particles and the solid particles is increased. And simultaneously, tiny oil particles are adsorbed on the surface of the coalescing material when passing through the coalescing layer and gradually become larger oil particles, and the oil particles are captured by the micro bubbles passing through the coalescing layer and are separated from the surface of the coalescing material to float upwards under the action of buoyancy and rising micro bubble flushing. Thus, under the dual actions of air floatation and coalescence, the oil removal effect of the oil-containing wastewater is improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a fluidized bed deoiling integration equipment which characterized in that: comprising the following steps:
the exhaust pipe is arranged at the top of the integrated equipment;
the coalescing layer is positioned in the middle of the integrated equipment, an upper fluidized bed layer and a lower fluidized bed layer are respectively arranged above and below the coalescing layer, and a homogenizing layer is arranged between the lower fluidized bed layer and the coalescing layer;
the water stop plate is positioned at the bottom of the integrated equipment;
the jet aeration cutting inlet is arranged at the upper part of the water stop plate and enters from the tangential direction of the tank wall of the integrated equipment;
the jet pump is arranged outside the integrated equipment, and the suction inlet of the jet pump is positioned at the lower part of the water stop plate;
the water inlet of the jet device is communicated with the water outlet of the jet pump, and the water outlet of the jet device is positioned at the upper part of the water stop plate;
the overflow water tank is arranged outside the upper end of the integrated equipment, an overflow pipe is arranged below the overflow water tank, the overflow pipe is communicated with the lower part of the water stop plate, and a vent pipe is arranged at the upper part of the overflow water tank;
the oil skimming groove is arranged outside the upper end of the integrated equipment and is communicated with the inside of the integrated equipment, and an oil skimming pipe is arranged at the bottom of the oil skimming groove.
2. A fluidized bed oil removal integrated apparatus according to claim 1, wherein,
the top of blast pipe is provided with a gas collecting tube, the gas collecting tube is linked together with the breather pipe at overflow basin top.
3. A fluidized bed oil removal integrated apparatus according to claim 2, wherein,
the air suction port of the ejector is connected with a nitrogen storage tank, the nitrogen storage tank is provided with an air return pipe, and the air return pipe is communicated with the air collecting pipe.
4. A fluidized bed oil removal integrated apparatus according to claim 3, wherein,
the top of the nitrogen storage tank is provided with a breathing port, and the nitrogen storage tank is also provided with an air inlet pipe which is communicated with a nitrogen source and used for supplementing consumed nitrogen.
5. A fluidized bed oil removal integrated apparatus according to claim 1, wherein,
the oil skimming groove is communicated with the dirty oil tank through an oil skimming pipe, and a vent pipe is arranged at the top of the dirty oil tank and is communicated with the gas collecting pipe.
6. A fluidized bed oil removal integrated apparatus according to claim 1, wherein,
the fluidized bed oil removal integrated equipment organically combines air floatation oil removal and coalescence oil removal through a fluidized bed mode, nitrogen is adopted as an air floatation air source, and the nitrogen is recycled in the air floatation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222810499.5U CN219279578U (en) | 2022-10-25 | 2022-10-25 | Fluidized bed deoiling integrated equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222810499.5U CN219279578U (en) | 2022-10-25 | 2022-10-25 | Fluidized bed deoiling integrated equipment |
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| Publication Number | Publication Date |
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| CN219279578U true CN219279578U (en) | 2023-06-30 |
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| CN202222810499.5U Active CN219279578U (en) | 2022-10-25 | 2022-10-25 | Fluidized bed deoiling integrated equipment |
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| CN (1) | CN219279578U (en) |
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- 2022-10-25 CN CN202222810499.5U patent/CN219279578U/en active Active
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