CN117902677B - An apparatus and method for removing oil and suspended solids from water. - Google Patents
An apparatus and method for removing oil and suspended solids from water.Info
- Publication number
- CN117902677B CN117902677B CN202211234690.8A CN202211234690A CN117902677B CN 117902677 B CN117902677 B CN 117902677B CN 202211234690 A CN202211234690 A CN 202211234690A CN 117902677 B CN117902677 B CN 117902677B
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- micro
- vortex
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- coalescence
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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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The application provides a treatment device and a method for removing oil and suspended solids in water, wherein the device comprises a regulating micro-vortex coalescence oil removing section and a sedimentation section, a micro-vortex coalescer containing a micro-vortex coalescence element is arranged at the upstream of the regulating micro-vortex coalescence oil removing section, and a micro-vortex reactor containing a micro-vortex reaction ball is arranged at the upstream of the sedimentation section and at the downstream of the regulating micro-vortex coalescence oil removing section. Compared with the traditional process, the oil removal efficiency and suspended solid removal efficiency of the application are greatly improved. The device provided by the application combines the functions of micro-vortex coalescence degreasing, natural degreasing adjustment, micro-vortex reaction, sedimentation, buffering and the like, replaces a traditional process three-level structure, changes a traditional plane arrangement mode, changes multi-level treatment equipment from a plane to a three-dimensional one, and solves the problems of long treatment flow, large occupied area, easy suction and bias flow of suspended solids, easy blockage of coalescence materials and the like of produced water of an oil-gas field.
Description
Technical Field
The present invention relates to, but is not limited to, the field of oilfield gas field produced water treatment, and in particular, but not limited to, a treatment apparatus and method for removing oil and suspended solids.
Background
In the oil and gas field produced water treatment process, the oil removing section of most produced water treatment stations mainly adopts a natural oil removing, coagulation oil removing and buffering process. The oil removal and suspended solid removal process method has the problems of low oil removal efficiency, poor reaction effect, poor suspended solid removal effect and the like, and generally adopts three-stage treatment structures, and has multiple stages and large occupied area. The Chinese patent (ZL 201721134145.6) discloses a multifunctional integrated oil removing device, which has the following problems that firstly, the device adopts an upper structure, a middle structure and a lower structure, the structure is not easy to realize, the manufacture and the construction are difficult, secondly, the first oil removing area of the device adopts gravity sedimentation oil removing, the section can only remove floating oil with the grain diameter of more than or equal to 100 mu m, the oil removing effect of the section is poor, the effluent oil content of the section is usually about 150mg/L, a large amount of oil particles with the grain diameter of less than 100 mu m in water enter the second oil removing area, the dosage is larger, and the generated hazardous waste such as dirty oil and sludge is more, thirdly, the device adopts a vertical flow mode, and the water distribution and collection system is complex and easy to cause blockage and drift. And fourthly, the equipment is not resistant to load impact, and because the water distribution bell mouth of the second oil removing area of the equipment is upward, when the water quantity changes, the impact on the upper oil layer is larger, so that oil and part of suspended matters reenter water, and the oil removing and suspended solid removing effects are poor. The existing coalescing oil removal technology for the produced water treatment mostly adopts anthracite, ceramsite, serpentine and other fillers, and has the problem that the fillers are easy to block, so that the application of the technology in oil and gas fields is limited.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
In order to solve the problems of low oil removal efficiency, poor reaction effect, poor suspended solid removal effect, large occupied area and the like of the existing oil and gas field produced water oil removal and suspended solid removal process method, the application provides an integrated oil removal and suspended solid removal treatment device which combines the functions of micro-vortex coalescence oil removal, oil removal adjustment, micro-vortex reaction, sedimentation, buffering and the like into a whole and can replace a three-stage treatment structure of the traditional process.
The application provides a treatment device for removing oil and suspended solids in water, which comprises the following components:
Regulating the micro-vortex coalescence oil removing section and the sedimentation section;
A micro-vortex coalescer is arranged at the upstream of the regulating micro-vortex coalescence oil removing section and comprises a micro-vortex coalescence element which is configured to enlarge the aggregation of oil and suspended solids in the oily sewage to be treated by utilizing the micro-vortex effect;
A micro-vortex reactor is arranged at the upstream of the sedimentation section and at the downstream of the regulating micro-vortex coalescence deoiling section, and comprises micro-vortex reaction balls which are configured to be capable of performing micro-vortex coalescence reaction;
The micro-vortex adjusting coalescence degreasing section is configured to adjust the micro-vortex action to separate oil and suspended solids in the oily sewage to be treated from water;
one end of the micro-vortex coalescer is communicated with a water inlet pipe for providing the oily water to be treated, the other end of the micro-vortex coalescer is communicated with one end of the regulating micro-vortex coalescence deoiling section, the other end of the regulating micro-vortex coalescence deoiling section is communicated with one end of the micro-vortex reactor, and the other end of the micro-vortex reactor is communicated with the sedimentation section.
In one embodiment of the present application, the processing device further includes a tank;
The tank body is of a vertical structure, the tank body is divided into the micro-vortex adjusting coalescence oil removing section and the sedimentation section which are not communicated with each other, wherein the micro-vortex adjusting coalescence oil removing section is arranged at the upper part of the tank body, and the sedimentation section is arranged at the lower part of the tank body.
In one embodiment provided by the application, the outlet of the regulating micro-vortex coalescence deoiling section is arranged near the inner side wall of the tank body, and the regulating micro-vortex coalescence deoiling section is communicated with the micro-vortex reactor through the outlet.
In one embodiment provided by the application, the water inlets of the regulating micro-vortex coalescence deoiling sections are symmetrically arranged, and the water inlets of the regulating micro-vortex coalescence deoiling sections are overlapped with the axis of the regulating micro-vortex coalescence deoiling sections.
In one embodiment of the application, the water inlets of the plurality of settling sections are symmetrically arranged, and the axes of the water inlets of the plurality of symmetrically arranged settling sections are coincident with the axes of the settling sections.
In one embodiment of the application, the outlet of the regulating micro-vortex coalescence deoiling section is a first annular circular pipe, an opening capable of enabling liquid to flow in is arranged at the lower end of the first annular circular pipe, and the liquid in the regulating micro-vortex coalescence deoiling section enters the micro-vortex reactor through the first annular circular pipe.
In one embodiment of the application, the outlet of the sedimentation section is arranged close to the inner side wall of the tank.
In one embodiment of the application, the outlet of the sedimentation section is a second annular circular pipe, an opening is arranged at the lower end of the second annular circular pipe, and the sedimentation section flows out of the treatment device for removing oil and suspended solids in water through the second annular circular pipe.
In one embodiment provided by the application, the regulating micro-vortex coalescence deoiling section is provided with a first drain outlet and a first oil outlet;
the first oil outlet is positioned above the first annular circular pipe, and the first annular circular pipe is positioned above the first sewage draining outlet.
In one embodiment provided by the application, the sedimentation section is provided with a second sewage outlet and a second oil outlet;
the second oil outlet is positioned above the second annular circular pipe, and the second annular circular pipe is positioned above the second sewage draining outlet.
In one embodiment of the present application, the micro-vortex coalescing element is a micro-vortex coalescing ball filled with coalescing filler, the micro-vortex coalescing element is a hollow structure comprising:
The porous shell is provided with a diversion hole for communicating the inside and the outside of the micro-vortex coalescence element;
Coalescing filler disposed in the hollow structure,
The longest diameter of the deflector hole is smaller than the shortest diameter of the coalescing filler.
In one embodiment of the present application, the diversion holes occupy 30% to 80% of the area of the porous shell.
In one embodiment provided by the application, the micro-vortex coalescing element is a sphere, in one embodiment provided by the application, the thickness ratio of the outer diameter of the micro-vortex coalescing element to the porous shell is (100 to 300): (1 to 6), and in one embodiment provided by the application, the diameter ratio of the outer diameter of the micro-vortex coalescing element to the flow guiding hole is (100 to 300): (15 to 40).
In one embodiment provided by the present application, a plurality of coalescing fillers in one of the micro-vortex coalescing elements has a space of rotational movement within the porous housing.
In one embodiment of the present application, the porous shell may be made of any one or more of ABS material, modified ABS material, polypropylene material, modified polypropylene material, polyethylene and other plastic materials.
In one embodiment of the present application, the coalescing filler may be any one or more of ABS material, modified ABS material, polypropylene material, modified polypropylene material, polyethylene and other plastic materials.
In one embodiment provided herein, the ratio of the outer diameter of the micro-vortex coalescing element to the outer diameter of the coalescing filler is 1 (0.125 to 0.5).
In one embodiment provided herein, the micro-vortex coalescing element may have an outer diameter of 100mm to 300mm.
In one embodiment provided by the present application, the coalescing filler may have an outer diameter of 25mm to 75mm. In one embodiment provided by the present application, the coalescing filler has an outer diameter greater than the deflector hole diameter.
In one embodiment provided by the present application, the coalescing packing is selected from any one or more of pall ring packing, step ring packing, saddle ring packing, multi-faceted hollow sphere packing, porous sphere packing, raschig ring packing, iso-saddle ring packing, and gear ring packing.
In one embodiment provided herein, the micro-vortex coalescing element has an average density of material of 0.9 x10 3kg/m3 to 1.1 x10 3kg/m3.
In one embodiment of the application, the number of the micro-vortex coalescers is one or more, and when the number of the micro-vortex coalescers is more than two, the water outlet of the most downstream micro-vortex coalescers is communicated with the water inlet of the natural oil removal section;
The number of the micro-vortex reactors is one or more than two, and when the number of the micro-vortex reactors is more than two, the water outlet of the most downstream micro-vortex reactor is communicated with the water inlet of the sedimentation section.
In one embodiment of the present application, the water inlet of the micro vortex reactor further comprises a medicament inlet;
In one embodiment provided by the application, the agent is selected from any one or more of a demulsifier, a coagulant, and a flocculant.
In one embodiment provided by the present application, the residence times of the micro-vortex coalescer and the micro-vortex reactor are each independently selected from 2min to 20min, preferably, residence times are each independently selected from 5min to 10min;
The micro-vortex coalescer and the micro-vortex reactor are each independently selected from 10m/h to 360m/h of empty bed flow rate, preferably each independently selected from 25m/h to 90m/h;
in one embodiment provided by the application, the hydraulic residence time of the regulating micro-vortex coalescence deoiling section is 30min to 180min;
In one embodiment provided by the application, the hydraulic retention time of the settling section is 30min to 120min.
The beneficial effects of the application are as follows:
Compared with the traditional process, the oil removal efficiency and suspended solid removal efficiency of the application are greatly improved. Solves the problems of low oil removal efficiency, poor reaction effect, poor suspended solid removal effect and the like in the traditional process. The device provided by the application combines the functions of micro-vortex coalescence degreasing, natural degreasing adjustment, micro-vortex reaction, sedimentation, buffering and the like, replaces a traditional process three-level structure, changes a traditional plane arrangement mode, changes a multi-level treatment device from a plane to a three-dimensional one, solves the problems of long treatment flow, large occupied area, easy suction and bias flow of suspended solids, easy blockage of coalescence materials and the like of the produced water of an oil-gas field, and has the characteristics of short flow and small occupied area, and the occupied area can be reduced by more than 40%. The oil content and suspended solids of the effluent of the device can be reduced to below 20 mg/L. Compared with ZL201721134145.6, the application has the advantages that the water outlet of the micro-vortex coalescence section is regulated to be 50mg/L, the oil of the micro-vortex coalescence section is regulated to be recycled, the produced water is more than 0.1kg of recovered oil, the amount of dirty oil and sludge is reduced by 0.1kg, the dosage is reduced by more than 30%, the treatment cost is saved by 0.3 yuan/m 3, and the device solves the problems that the structure of the ZL201721134145.6 patent is difficult to realize, the manufacturing and construction are difficult, the dosage is larger, the produced dirty oil and sludge are more, the water distribution and collection system is complex, the blockage, the bias flow and the intolerance to load impact are easy to occur.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the application may be realized and attained by the structure particularly pointed out in the written description.
Drawings
The accompanying drawings are included to provide an understanding of the principles of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the principles of the application.
Fig. 1 is a schematic view of an integrated oil and suspended solids removal treatment apparatus according to an exemplary embodiment of the present application.
The device comprises a reference numeral 1, a tank body, a regulating micro-vortex coalescence deoiling section, a sedimentation section and a sedimentation section, wherein the reference numeral 1 is a tank body;
4-1, a first section of micro-vortex coalescer, 4-2, a second section of micro-vortex coalescer, 4-3, a connecting pipe between the two sections of micro-vortex coalescers, 4101, a first section of micro-vortex coalescer bottom grid mesh, 4102, a first micro-vortex coalescer element, 4201, a second section of micro-vortex coalescer element bottom grid mesh, 4202, a second micro-vortex coalescer element, 4203, a first water distribution hole, 4102-1, a diversion hole, 4102-2, a coalescing filler, 4102-3, and a porous shell;
5-1, a first section of micro-vortex reactor, 5-2, a second section of micro-vortex reactor, 5-3, a connecting pipe between the two sections of micro-vortex reactors, 5101, a first micro-vortex reaction ball, 5201, a second section of micro-vortex reactor, 5202, a second micro-vortex reaction ball, 5203, a second water distribution hole;
6. A water inlet pipe;
7. Adjusting the micro-vortex coalescence deoiling section water collecting device, adjusting a top baffle plate of the micro-vortex coalescence deoiling section water collecting device, adjusting an annular perforated pipe of the micro-vortex coalescence deoiling section water collecting device, adjusting a water collecting branch pipe of the micro-vortex coalescence deoiling section water collecting device, adjusting a lower baffle plate of the micro-vortex coalescence deoiling section water collecting device, adjusting 7104, and adjusting a water collecting main pipe of the micro-vortex coalescence deoiling section water collecting device;
8. regulating the connecting pipe between the micro-vortex coalescence deoiling section and the micro-vortex reactor, 9, regulating the bottom plate of the micro-vortex coalescence deoiling section, 10, and diagonal pipe;
11. the sedimentation section water collecting device comprises a sedimentation section water collecting device, a top baffle plate of the sedimentation section water collecting device, 11102 annular perforated pipes of the sedimentation section water collecting device, 11103 water collecting branch pipes of the sedimentation section water collecting device, 11104 lower baffle plates of the sedimentation section water collecting device, 11105 water collecting main pipes of the sedimentation section water collecting device;
12. The device comprises a water outlet pipe, an oil collecting tank of a micro-vortex coalescence oil removing section, an oil collecting pipe of a micro-vortex coalescence oil removing section, an annular perforated oil collecting pipe of a sedimentation section, an oil collecting pipe of a sedimentation section, a sludge discharging pipe of a micro-vortex coalescer of a section 17, a sludge discharging pipe of a micro-vortex coalescer of a section 18, a sludge discharging pipe of a micro-vortex coalescer of a section two, a sludge discharging pipe of a micro-vortex coalescence oil removing section of a section 19, a sludge discharging pipe of a sedimentation section 20, a sludge discharging pipe of a micro-vortex reactor of a section 21, a sludge discharging pipe of a micro-vortex reactor of a section one, a sludge discharging pipe of a micro-vortex reactor of a section two, a sludge discharging pipe of a micro-vortex reactor of a section 23, a coagulant adding port, a flocculant adding port of a section 24 and a flocculant adding port.
Fig. 2 is a partially enlarged schematic illustration of the conditioning micro-vortex coalescence deoiling stage water collector 7 and the settling stage water collector 11.
Fig. 3 is a schematic plan view of the regulating micro-vortex coalescence deoiling stage water collecting device 7 and the sedimentation stage water collecting device 11.
Fig. 4 is an enlarged schematic view of a portion of the lower baffle 7104 of the regulating micro-vortex coalescing oil removal stage water collector and the lower baffle 11104 of the settling stage water collector.
FIG. 5 is a schematic view of a micro-vortex coalescing element.
FIG. 6 is a schematic illustration of packing within a cross section of a micro-vortex coalescing element.
Fig. 7 is a schematic view of a porous housing.
FIG. 8 is a schematic diagram of a micro-vortex reaction ball.
Detailed Description
The following describes embodiments of the present application in detail for the purpose of making the objects, technical solutions and advantages of the present application more apparent. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
FIG. 1 is a schematic diagram of an integrated oil removal and suspended solids removal treatment device. Fig. 2 is a partially enlarged schematic illustration of the conditioning micro-vortex coalescence deoiling stage water collector 7 and the settling stage water collector 11. Fig. 3 is a schematic plan view of the regulating micro-vortex coalescence deoiling stage water collecting device 7 and the sedimentation stage water collecting device 11. Fig. 4 is an enlarged schematic view of a portion of the lower baffle 7104 of the regulating micro-vortex coalescing oil removal stage water collector and the lower baffle 11104 of the settling stage water collector. FIG. 5 is a schematic view of a micro-vortex coalescing ball. FIG. 6 is a schematic illustration of the packing inside a cross section of a micro vortex coalescing ball. FIG. 7 is a schematic view of a micro-vortex coalescing sphere shell. FIG. 8 is a schematic diagram of a micro-vortex reaction ball.
As shown in fig. 1 to 8, the embodiment of the application provides a treatment device for removing oil and suspended solids in water, which comprises a micro-vortex coalescence oil removing section 2 and a sedimentation section 3;
A micro-vortex coalescer is arranged at the upstream of the regulating micro-vortex coalescence oil removing section 2 and comprises a micro-vortex coalescence element which is configured to enlarge the aggregation of oil and suspended solids in the oily sewage to be treated by utilizing the micro-vortex effect;
a micro-vortex reactor is arranged at the upstream of the sedimentation section 3 and at the downstream of the regulating micro-vortex coalescence deoiling section 2, and comprises micro-vortex reaction balls which are configured to be capable of performing micro-vortex coalescence reaction;
The micro-vortex adjusting coalescence degreasing section 2 is configured to adjust the micro-vortex action to separate oil and suspended solids in the oily sewage to be treated from water;
one end of the micro-vortex coalescer is communicated with a water inlet pipe for providing the oily sewage to be treated, the other end of the micro-vortex coalescer is communicated with one end of the regulating micro-vortex coalescence deoiling section 2, the other end of the regulating micro-vortex coalescence deoiling section 2 is communicated with one end of the micro-vortex reactor, and the other end of the micro-vortex reactor is communicated with the sedimentation section 3.
In the description of the present application, the terms "upstream" and "downstream" are distinguished by the flow path of the oily wastewater to be treated in the treatment device for removing oil and suspended solids in said water, upstream and downstream.
Illustratively, as shown in FIG. 1, the treatment device further comprises a tank 1;
The tank body 1 is of a vertical structure, the tank body is divided into the regulating micro-vortex coalescence degreasing section and the sedimentation section which are not communicated with each other, wherein the upper part of the tank body 1 is provided with the regulating micro-vortex coalescence degreasing section 2, and the lower part of the tank body 1 is provided with the sedimentation section 3.
Illustratively, as shown in fig. 1, the water inlets (i.e., the first water distribution holes 4203) of the plurality of the regulated micro-vortex coalescing oil removal segments 2 are symmetrically disposed, and illustratively, the axes of the plurality of the water inlets of the symmetrically disposed regulated micro-vortex coalescing oil removal segments 2 and the axis of the regulated micro-vortex coalescing oil removal segments 2 may coincide.
Illustratively, as shown in fig. 1, the water inlets (i.e., the second water distribution holes 5203) of the plurality of settling sections 3 are symmetrically arranged, and the axes of the water inlets of the symmetrically arranged plurality of settling sections 3 coincide with the axes of the settling sections 3.
Illustratively, as shown in FIG. 1, the outlet of the conditioning micro-vortex coalescing oil removal section 2 is disposed proximate to the inner sidewall of the tank 1. The outlet of the regulating micro-vortex coalescence deoiling section 2 is a first annular circular pipe (namely a regulating micro-vortex coalescence deoiling section water collecting device 7), an opening capable of enabling liquid to flow in is arranged at the lower end of the first annular circular pipe, and the liquid in the regulating micro-vortex coalescence deoiling section 2 enters the micro-vortex reactor through the first annular circular pipe.
For example, the first circular pipe may be set into a pipe with other shape, or the first circular pipe is not involved, and when the water level reaches the water collecting branch pipe 7103 of the water collecting device of the micro vortex coalescence deoiling section, the water enters the water collecting main pipe 7105 of the water collecting device of the micro vortex coalescence deoiling section and flows out downstream.
Illustratively, as shown in fig. 1, the outlet of the sedimentation section 3 is provided near the inner side wall of the tank 1. The outlet of the sedimentation section is a second annular circular pipe (sedimentation section water collecting device 7), an opening is arranged at the lower end of the second annular circular pipe, and the sedimentation section 3 flows out of the treatment device for removing oil and suspended solids in water through the second annular circular pipe.
For example, the second circular pipe may be formed into a pipe with another shape, or the second circular pipe may not be involved, and when the water level reaches the water collecting branch pipe 11103 of the water collecting device of the micro vortex coalescence deoiling section, the water enters the water collecting main pipe 11105 of the water collecting device of the micro vortex coalescence deoiling section and flows out downstream.
Illustratively, as shown in fig. 1, the regulating micro-vortex coalescence deoiling section is provided with a first drain outlet (i.e. a drain outlet communicated with the mud pipe 19 of the regulating micro-vortex coalescence deoiling section) and a first oil outlet (i.e. the oil receiving groove 13 of the regulating micro-vortex coalescence deoiling section, the oil receiving groove 13 of the regulating micro-vortex coalescence deoiling section may be annular circular tube shape);
the first oil outlet is positioned above the first annular circular pipe, and the first annular circular pipe is positioned above the first sewage draining outlet.
Illustratively, as shown in fig. 1, the settling section is provided with a second drain (i.e., a drain in communication with the settling section sludge discharge pipe 20) and a second oil outlet (i.e., a settling section annular perforated oil receiving pipe 15);
the second oil outlet is positioned above the second annular circular pipe, and the second annular circular pipe is positioned above the second sewage draining outlet.
Illustratively, as shown in FIG. 2, the opening of the first circular tube is positioned at the lower part of the first circular tube for the liquid to flow into the first circular tube;
Illustratively, as shown in FIGS. 5-7, the micro-vortex coalescing element is a micro-vortex coalescing ball (i.e., porous shell 4102-3, which may be identical to a micro-vortex reaction ball) containing coalescing filler 4102-2, the micro-vortex coalescing element is a hollow structure comprising:
the porous shell 4102-3 is provided with a flow guide hole 4102-1 for communicating the inside and the outside of the micro vortex coalescing element;
Coalescing filler 4102-2, the coalescing filler 4102-2 being disposed in the hollow structure,
The longest diameter of the baffle holes 4102-1 is less than the shortest diameter of the coalescing filler 4102-2.
Illustratively, the flow directing holes 4102-1 comprise 30% to 80% of the area of the porous housing 4102-3.
Illustratively, the micro-vortex coalescing element is a sphere, in one embodiment provided by the present disclosure, the ratio of the outer diameter of the micro-vortex coalescing element to the thickness of the porous housing 4102-3 is (100 to 300): (1 to 6), and illustratively, the ratio of the outer diameter of the micro-vortex coalescing element to the diameter of the baffle aperture 4102-1 is (100 to 300): (15 to 40).
Illustratively, a plurality of coalescing fillers 4102-2 in one of the micro-vortex coalescing elements has space for rotational movement within the porous housing 4102-3.
Illustratively, the porous housing 4102-3 may be made of any one or more of an ABS material, a modified ABS material, a polypropylene material, a modified polypropylene material, and a polyethylene plastic material.
Illustratively, the coalescing filler 4102-2 may be made of any one or more of an ABS material, a modified ABS material, a polypropylene material, a modified polypropylene material, and a polyethylene plastic material.
Illustratively, the ratio of the outer diameter of the micro-vortex coalescing element to the outer diameter of the coalescing filler 4102-2 is 1 (0.125 to 0.5).
Illustratively, the micro-vortex coalescing element may have an outer diameter of 100mm to 300mm.
Illustratively, the coalescing filler 4102-2 may have an outer diameter of 25mm to 75mm. Illustratively, as shown in FIG. 5, the coalescing filler has an outer diameter that is greater than the diameter of the baffle holes 4102-1.
Illustratively, the coalescing packing 4102-2 is selected from any one or more of a pall ring packing, a step ring packing, a saddle ring packing, a multi-faceted hollow sphere packing, a porous sphere packing, a raschig ring packing, an iso-saddle ring packing, and a gear ring packing.
Illustratively, the material average density of the micro-vortex coalescing element is from 0.9×10 3kg/m3 to 1.1×10 3kg/m3.
In one embodiment provided by the application, the number of the micro-vortex coalescers is one or more, and when the number of the micro-vortex coalescers is more than two, the water outlet of the most downstream micro-vortex coalescers 1 is communicated with the water inlet of the natural oil removal section;
the number of the micro-vortex reactors 2 is one or more than two, and when the number of the micro-vortex reactors is more than two, the water outlet of the most downstream micro-vortex reactor is communicated with the water inlet of the sedimentation section.
Illustratively, as shown in fig. 1, the water inlet of the micro-vortex reactor further comprises a medicament inlet (for example, a coagulant inlet 23 and a flocculant inlet 24 positioned at the connecting pipe 8 between the micro-vortex coalescence degreasing section and the micro-vortex reactor);
illustratively, the agent is selected from any one or more of a demulsifier, a coagulant, and a flocculant.
Illustratively, the residence times of the micro-vortex coalescer and the micro-vortex reactor are each independently selected from 2min to 20min, preferably, residence times are each independently selected from 5min to 10min;
The micro-vortex coalescer and the micro-vortex reactor are each independently selected from 10m/h to 360m/h of empty bed flow rate, preferably each independently selected from 25m/h to 90m/h;
illustratively, the hydraulic residence time of the conditioning micro-vortex coalescing oil removal stage is from 30min to 180min;
Illustratively, the hydraulic residence time of the settling section is from 30min to 120min.
Example 1:
as shown in fig. 1, the application provides an integrated treatment device for removing oil and suspended solids, which consists of a micro-vortex coalescence oil removal section 2, a sedimentation section 3, a micro-vortex coalescer, a micro-vortex reactor and the like. The liquid flows through the micro-vortex coalescer, the micro-vortex coalescence oil removing section 2, the micro-vortex reactor and the sedimentation section 3 in sequence.
The micro-vortex coalescer comprises a first section of micro-vortex coalescer 4-1, a second section of micro-vortex coalescer 4-2, a second section of micro-vortex coalescer connecting pipe 4-3 and the like. The section of micro-vortex coalescer 4-1 consists of a cylindrical drum, a section of micro-vortex coalescer bottom grid network 4101, and a first micro-vortex coalescer element 4102, etc. The two-stage micro-vortex coalescer 4-2 consists of a cylindrical barrel, a two-stage micro-vortex coalescer bottom grid 4201, second micro-vortex coalescing balls 4202, water distribution holes 4203 and the like.
As shown in FIG. 1, a section of the micro-vortex coalescer 4-1 is depicted broken during drawing to illustrate the conditioning of the micro-vortex coalescing oil removal section water collection device 7 and the chute 10. A section of the micro-vortex coalescer bottom grid network 4101 is used to maintain the first micro-vortex coalescer element 4102 in a section of the micro-vortex coalescer 4-1. The section of the micro-vortex reactor 5-1 is similar to the section of the micro-vortex coalescer 4-1 when depicted.
As shown in fig. 1, one end of a regulating micro-vortex coalescence deoiling section water collecting device 7 is communicated with a regulating micro-vortex coalescence deoiling section 2, the other end of the regulating micro-vortex coalescence deoiling section water collecting device 7 is communicated with one end of a connecting pipe 8 between the regulating micro-vortex coalescence deoiling section and the micro-vortex reactor, and the other end of the connecting pipe 8 between the regulating micro-vortex coalescence deoiling section and the micro-vortex reactor is communicated with the micro-vortex reactor 5.
As shown in FIG. 1, the first-stage micro-vortex coalescent oil removing stage 4-1 is not directly communicated with the regulating micro-vortex coalescent oil removing stage 2, the second-stage micro-vortex coalescent 4-2 is directly communicated with the regulating micro-vortex coalescent oil removing stage 2, the first-stage micro-vortex reactor 5-1 is not directly communicated with the sedimentation stage 3, the second-stage micro-vortex reactor 5-2 is directly communicated with the sedimentation stage 3, and the regulating micro-vortex coalescent oil removing stage 2 is communicated with the first-stage micro-vortex reactor 5-1 through a regulating micro-vortex coalescent oil removing stage water collecting device annular perforated pipe 7102, a regulating micro-vortex coalescent oil removing stage water collecting device water collecting main pipe 7105 and a micro-vortex reactor inter-connecting pipe 8.
The micro-vortex reactor consists of a first-stage micro-vortex reactor 5-1, a second-stage micro-vortex reactor 5-2, a connecting pipe 5-3 between the first-stage micro-vortex reactor and the second-stage micro-vortex reactor, and the like. The first stage micro-vortex reactor 5-1 consists of a first stage micro-vortex reactor bottom grid net 5101, a third micro-vortex ball 5102 and the like. The two-stage micro-vortex reactor 5-2 consists of a grid mesh 5201 at the bottom of the two-stage micro-vortex reactor, a fourth micro-vortex sphere 5202, water distribution holes 5203 and the like.
The first and second micro-vortex reaction balls 5101 and 5102 may be micro-vortex balls as shown in fig. 8 or micro-vortex balls similar in structure to fig. 8. Illustratively, the surface openings of the micro-vortex reaction balls may have a specification of 10mm to 40mm, an aperture ratio of 30% to 80%, a wall thickness of the micro-vortex reaction balls may be 1mm to 6mm, and a diameter of the micro-vortex reaction balls may be 100mm to 300mm.
As shown in fig. 1, the produced water from the oil and gas field firstly enters the section of the micro vortex coalescer 4-1 in the micro vortex coalescer through the water inlet pipe 6, enters from the lower part of the section of the micro vortex coalescer 4-1 and flows out from the upper part. The micro-vortex coalescer 4-1 is positioned near the inner side wall of the tank body 1, one part of the micro-vortex coalescer is positioned in the regulating micro-vortex coalescence deoiling section 2, the other part of the micro-vortex coalescer is positioned in the sedimentation section 3, when water flows through the porous spherical shell diversion holes of the micro-vortex coalescer 4-1, the speed and the direction of the water flow change, speed gradients are formed among the flow layers, a large number of micro-vortices are formed in the fluid, oil particles in the water are promoted to collide and agglomerate into large oil beads to float upwards, the effect of collision and coalescence deoiling is achieved, part of the oil particles and suspended matters are collided and combined in the micro-vortices so that the capability of carrying suspended solids to float upwards is achieved, after the micro-vortices pass through the porous spherical shell diversion holes, some small oil particles are not collided and agglomerated in the spherical shell, the agglomerated fillers are adsorbed on the filler, along with the adsorbed accumulation, large oil beads are gradually agglomerated on the coalesced filler, the oil beads are separated from the filler under the action of density difference, the effect of wetting coalesced and deoiling is achieved, the wetting coalesced and deoiling effect of the porous spherical shell is improved, and the defect of the two kinds of the micro-vortex is removed, and the micro-vortex is not collided. The produced water from the oil and gas field flowing out of the first-stage micro-vortex coalescer 4-1 enters the second-stage micro-vortex coalescer 4-2 through the second-stage micro-vortex coalescer connecting pipe 4-3.
The particles are further enlarged by further micro-vortex and mutual collision actions in the two-stage micro-vortex coalescer 4-2, then the oil-gas field produced water flows out of the two-stage micro-vortex coalescer 4-2 by water distribution through the first water distribution hole 4203, the oil-gas field produced water flows horizontally and downwards in a radial manner, and enters the micro-vortex coalescence oil removal section 2 (the space above the bottom plate 9 of the micro-vortex coalescence oil removal section is adjusted).
As shown in fig. 1, 2, 3 and4, the produced water of the oil and gas field in the micro-vortex coalescence deoiling section 2 falls onto the bottom plate 9 of the micro-vortex coalescence deoiling section, and the liquid level is continuously raised until reaching the height of the water collecting device 7 of the micro-vortex coalescence deoiling section, and enters the water collecting device 7 of the micro-vortex coalescence deoiling section. The top baffle 7101 of the micro-vortex coalescence deoiling section water collecting device, the lower baffle 7104 of the micro-vortex coalescence deoiling section water collecting device and the side wall of the tank body 1 form an annular space with an upper sealed part and an open lower part together (as can be seen from fig. 4, the lower baffle 7104 can be in a zigzag shape, water collection is more uniform so as to obtain better oil-water separation effect), an annular perforated pipe 7102 of the micro-vortex coalescence deoiling section water collecting device is arranged in the annular space, and a hole is arranged at the lower end of the pipe, so that produced water of an oil gas field enters the annular perforated pipe 7102 of the micro-vortex coalescence deoiling section water collecting device, and produced water of the oil gas field in the annular perforated pipe 7102 of the micro-vortex coalescence deoiling section water collecting device enters the annular perforated pipe 7105 of the micro-vortex coalescence deoiling section water collecting device through the annular perforated pipe 7105 of the micro-vortex coalescence deoiling section water collecting device, and then enters the annular perforated pipe 718 of the micro-vortex coalescence deoiling section regulating section water collecting device so as to flow out of the micro-vortex coalescence deoiling section 2.
The larger oil and suspended solid particles are separated in the regulating micro-vortex coalescence deoiling section 2, the oil floats up to the top of the liquid level of the regulating micro-vortex coalescence deoiling section 2, is collected by an oil collecting groove 13 (an annular structure arranged on the side wall of the tank body 1) of the regulating micro-vortex coalescence deoiling section, and is discharged through an oil collecting pipe 14 of the regulating micro-vortex coalescence deoiling section.
Suspended solids in the produced liquid of the oil and gas field are settled at the bottom of the bottom plate 9 of the regulating micro-vortex coalescence deoiling section, the bottoms of the first-stage micro-vortex coalescer 4-1 and the second-stage micro-vortex coalescer 4-2, and are discharged through the mud discharging pipe 19 of the regulating micro-vortex coalescence deoiling section, the mud discharging pipe 17 of the first-stage micro-vortex coalescer and the mud discharging pipe 18 of the second-stage micro-vortex coalescer respectively.
The oil-gas field produced water enters a section of the micro-vortex reactor 5-1 in the micro-vortex reactor by adjusting a connecting pipe 8 between the micro-vortex coalescence deoiling section and the micro-vortex reactor, the oil-gas field produced water enters from the lower part of the section of the micro-vortex reactor 5-1 and is discharged from the upper part, when water flows pass through micro-vortex small holes at proper flow velocity, a large amount of small vortices are generated on the inner surface and the outer surface of the shell, the vortex flow of the water increases the flow velocity gradient, the diffusion of colloid and fine oil particles in the water is promoted to collide with the flocs, meanwhile, a three-dimensional flocs layer is formed in the reactor due to the small flow velocity, and has strong adsorption and net capturing effects, so that the oil particles and suspended solid particles are enlarged, and the flocculation efficiency is improved. The particles enter the lower part of the two-section micro-vortex reactor 5-2 through the connecting pipe 5-3 between the two-section micro-vortex reactor, and further become larger through further micro-vortex, mutual collision and flocculation and net capturing actions in the two-section micro-vortex reactor 5-2.
And then the oil and gas field produced water flows out of the two-stage micro-vortex reactor 5-2 through the second water distribution hole 5203 in a water distribution way, and the oil and gas field produced water flows horizontally and downwards in a radial way and enters the space of the sedimentation section 3 (the space above the bottom plate of the regulating micro-vortex coalescence degreasing section 9 and the tank body 1).
Illustratively, a coagulant feeding port 23 and a flocculant feeding port 24 can be arranged on the connecting pipe 8 between the micro vortex reactors, and coagulant and flocculant are respectively fed before the produced water of the oil-gas field enters the micro vortex reactors, so that emulsified oil is demulsified and colloid is destabilized, when water flows pass through the micro vortex small holes at proper flow velocity, a large amount of small vortices are generated on the inner surface and the outer surface of the shell, the vortex flow of the water increases the flow velocity gradient, the diffusion of colloid and fine oil particles in the water is promoted to collide with the flocs, meanwhile, a three-dimensional flocs layer is formed in the reactor due to the small flow velocity, and has strong adsorption and net capturing effects, so that the oil particles and suspended solid particles are increased, and the flocculation efficiency is improved.
As shown in fig. 1, 2 and 3, the produced water of the oil and gas field in the settling section 3 falls onto the bottom plate of the tank 1, and the liquid level is continuously raised until reaching the height of the settling section water collecting device 11, and enters the settling section water collecting device 11. Wherein, subsidence water collecting device top baffle 11101, congeal subsidence water collecting device lower part baffle 11104 and jar body 1's lateral wall and constitute a lower open-ended annular space jointly, be provided with subsidence water collecting device annular perforated pipe 11102 in this annular space, the lower extreme of this pipe is provided with the hole for oil gas field produced water gets into subsidence water collecting device annular perforated pipe 11102, the oil gas field produced water in the subsidence water collecting device annular perforated pipe 11102 gets into subsidence water collecting device water collecting main 11105 through congeal subsidence water collecting device water collecting main 11103, then flows out jar body 1 through outlet pipe 12.
The oil and suspended solid particles in the produced water of the oil-gas field of the sedimentation section 3 are separated in the sedimentation section 3, the oil floats to the top of the liquid level, is collected by an annular perforated oil collecting pipe 15 (an annular structure arranged on the side wall of the tank body 1) of the sedimentation section, and is discharged through an oil collecting pipe 16 of the sedimentation section.
Suspended solids in the sedimentation section 3 are settled on the bottom plate of the tank body 1 and the bottoms of the first-section micro-vortex reactor 5-1 and the second-section micro-vortex reactor 5-2, and are discharged through the sedimentation section mud discharging pipe 21, the first-section micro-vortex reactor mud discharging pipe 21 and the second-section micro-vortex reactor mud discharging pipe 22 respectively.
Illustratively, field produced water in the settling section may be passed through a down tube 10 for further separation of oil and suspended solids using shallow pool principles.
The device provided by the application firstly carries out micro-vortex coalescence oil removal on incoming water, when water flows through the porous shell diversion holes of the micro-vortex collector, the speed and the direction of the water flow are changed, a speed gradient is formed between the water layers, a large amount of micro-vortices are formed in the fluid, oil particles in the water are promoted to collide and aggregate into large oil beads to float upwards, the effect of collision coalescence oil removal is achieved, part of the oil particles and suspended matters are collided and combined in the micro-vortices so that the oil particles and suspended matters have the capability of carrying suspended solids to float upwards, after passing through the micro-vortices of the porous shell diversion holes, some small oil particles are not collided and coalesced, coalesced and are adsorbed on the filler in the porous shell, and form a large oil bead on the coalesced filler along with the accumulation of adsorption, the oil bead is gradually coalesced on the oil layer, the oil bead is separated from the filler to float upwards under the effect of density difference, the effect of wetting coalescence oil removal is achieved, and the wetting coalescence of the coalesced filler compensates the micro-vortex collision coalescence of the porous shell without capturing the tiny oil beads, the coalesced and the coalesced forms of the filler are combined, and the coalesced effect of the oil bead removal range is enlarged. Then enters a natural oil removal section, partial larger oil and suspended solid particles are separated through the action of natural sedimentation in the section, coagulant and flocculant are respectively added into effluent, the effluent enters a micro-vortex reaction section, emulsion breaking and colloid destabilization are carried out on the emulsified oil and the destabilized colloid through the added medicament, the oil particles and the suspended solid particles are increased through the actions of micro-vortex, mutual collision, three-dimensional flocculation, net capturing and the like, and then the effluent enters a sedimentation section, so that the three-phase separation of oil, mud and water is completed.
Claims (10)
1. The processing device for removing oil and suspended solids in water is characterized by combining micro-vortex coalescence oil removal, oil removal adjustment, micro-vortex reaction, sedimentation and buffering functions, and comprises:
Regulating the micro-vortex coalescence oil removing section and the sedimentation section;
A micro-vortex coalescer is arranged at the upstream of the regulating micro-vortex coalescence oil removing section and comprises a micro-vortex coalescence element which is configured to enlarge the aggregation of oil and suspended solids in the oily sewage to be treated by utilizing the micro-vortex effect;
A micro-vortex reactor is arranged at the upstream of the sedimentation section and at the downstream of the regulating micro-vortex coalescence deoiling section, and comprises micro-vortex reaction balls which are configured to be capable of performing micro-vortex coalescence reaction;
The micro-vortex adjusting coalescence degreasing section is configured to adjust the micro-vortex action to separate oil and suspended solids in the oily sewage to be treated from water;
One end of the micro-vortex coalescer is communicated with a water inlet pipe for providing the oily water to be treated, and the other end of the micro-vortex coalescer is communicated with one end of the regulating micro-vortex coalescence deoiling section;
the processing device also comprises a tank body;
The tank body is of a vertical structure, and is divided into the regulating micro-vortex coalescence degreasing section and the sedimentation section which are not communicated with each other, wherein the upper part of the tank body is the regulating micro-vortex coalescence degreasing section;
the outlet of the regulating micro-vortex coalescence deoiling section is arranged near the inner side wall of the tank body, and the regulating micro-vortex coalescence deoiling section is communicated with the micro-vortex reactor through the outlet;
The outlet of the micro-vortex coalescence oil removal adjusting section is a first annular circular pipe, and the first annular circular pipe is provided with an opening which can enable liquid to flow in;
the outlet of the sedimentation section is arranged near the inner side wall of the tank body;
The outlet of the sedimentation section is a second annular circular tube, an opening is arranged at the lower end of the second annular circular tube, and the water outlet of the treatment device for removing oil and suspended solids in the water of the second annular circular tube is communicated.
2. The device for removing oil and suspended solids in water according to claim 1, wherein the regulating micro-vortex coalescence deoiling section is provided with a first drain outlet and a first oil outlet;
the first oil outlet is positioned above the first annular circular pipe, and the first annular circular pipe is positioned above the first sewage draining outlet.
3. The treatment device for removing oil and suspended solids in water according to claim 1 or 2, wherein the sedimentation section is provided with a second drain outlet and a second oil outlet;
the second oil outlet is positioned above the second annular circular pipe, and the second annular circular pipe is positioned above the second sewage draining outlet.
4. The apparatus for removing oil and suspended solids from water according to claim 1 or 2, wherein the micro-vortex coalescing element is a micro-vortex coalescing ball filled with coalescing filler, and the ratio of the outer diameter of the micro-vortex coalescing ball to the outer diameter of the coalescing filler is 1 (0.125 to 0.5).
5. The apparatus for removing oil and suspended solids from water according to claim 4, wherein the micro-vortex coalescing balls have a diameter of 100mm to 300mm and are filled with coalescing filler having a diameter of 25mm to 75 mm;
the material of the micro-vortex coalescing element has an average density of 0.9 x 10 3kg/m3 to 1.1 x 10 3kg/m3.
6. The apparatus according to claim 4, wherein the number of the micro-vortex coalescers is one or more, and when the number of the micro-vortex coalescers is two or more, the water outlet of the most downstream micro-vortex coalescers is communicated with the water inlet of the micro-vortex coalesced deoiling section;
The number of the micro-vortex reactors is one or more than two, and when the number of the micro-vortex reactors is more than two, the water outlet of the most downstream micro-vortex reactor is communicated with the water inlet of the sedimentation section.
7. The apparatus for removing oil and suspended solids from water according to claim 1 or 2, wherein the water inlet of the micro vortex reactor further comprises a reagent inlet.
8. The apparatus for removing suspended solids from water according to claim 7, wherein the agent is selected from any one or more of demulsifier, coagulant and flocculant.
9. A method for removing oil and suspended solids in water, characterized in that the treatment device for removing oil and suspended solids in water according to any one of claims 1 to 8 is used;
The residence time of the micro-vortex coalescer and the micro-vortex reactor are each independently selected from 2min to 20min;
the hollow bed flow rates of the micro-vortex coalescer and the micro-vortex reactor are each independently selected from 10m/h to 360m/h;
The hydraulic retention time of the micro-vortex coalescence deoiling section is adjusted to be 30-180 min;
the hydraulic retention time of the sedimentation section is 30min to 120min.
10. The method of claim 9, wherein the residence time of the micro-vortex coalescer and the micro-vortex reactor are each independently selected from 5min to 10min;
the micro-vortex coalescer and the empty bed flow rate of the micro-vortex reactor are each independently selected from 25m/h to 90m/h.
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| CN2352513Y (en) * | 1997-10-23 | 1999-12-08 | 天津大学北洋新产品实验厂 | Pressing type oil removing sediment equipment |
| CN201046927Y (en) * | 2006-12-29 | 2008-04-16 | 郭淼 | Micro-vortex generator |
| CN202754829U (en) * | 2012-06-27 | 2013-02-27 | 中国石油天然气股份有限公司 | Settling degreasing tank |
| CN207175538U (en) * | 2017-07-31 | 2018-04-03 | 中国石油天然气股份有限公司 | a degreasing device |
| CN117902676A (en) * | 2022-10-10 | 2024-04-19 | 中国石油天然气股份有限公司 | Micro-vortex coalescing device for oily sewage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781040B (en) * | 2010-03-12 | 2011-12-21 | 余金海 | Treatment device of oily sewage of oil field |
| CN102424488B (en) * | 2011-08-31 | 2013-06-19 | 华东交通大学 | Integrated-process rural water purifier based on micro-eddy flocculation |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2352513Y (en) * | 1997-10-23 | 1999-12-08 | 天津大学北洋新产品实验厂 | Pressing type oil removing sediment equipment |
| CN201046927Y (en) * | 2006-12-29 | 2008-04-16 | 郭淼 | Micro-vortex generator |
| CN202754829U (en) * | 2012-06-27 | 2013-02-27 | 中国石油天然气股份有限公司 | Settling degreasing tank |
| CN207175538U (en) * | 2017-07-31 | 2018-04-03 | 中国石油天然气股份有限公司 | a degreasing device |
| CN117902676A (en) * | 2022-10-10 | 2024-04-19 | 中国石油天然气股份有限公司 | Micro-vortex coalescing device for oily sewage |
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