CN108439627A - A kind of process system and method to the demulsification of sewage containing oil emulsion - Google Patents
A kind of process system and method to the demulsification of sewage containing oil emulsion Download PDFInfo
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- CN108439627A CN108439627A CN201810495844.6A CN201810495844A CN108439627A CN 108439627 A CN108439627 A CN 108439627A CN 201810495844 A CN201810495844 A CN 201810495844A CN 108439627 A CN108439627 A CN 108439627A
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- 239000000839 emulsion Substances 0.000 title claims abstract description 57
- 239000010865 sewage Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000008569 process Effects 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000012528 membrane Substances 0.000 claims abstract description 47
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 31
- 238000004064 recycling Methods 0.000 claims abstract description 30
- 239000006227 byproduct Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 238000005374 membrane filtration Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 210000000481 breast Anatomy 0.000 claims description 2
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 claims 1
- 239000012071 phase Substances 0.000 abstract description 42
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000012074 organic phase Substances 0.000 abstract description 7
- 238000004220 aggregation Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 239000004519 grease Substances 0.000 abstract description 4
- 230000010148 water-pollination Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 59
- 239000007789 gas Substances 0.000 description 7
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000009300 dissolved air flotation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003672 gas field water Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/40—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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Landscapes
- 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)
- Analytical Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The process system and method, the process system that the invention discloses a kind of to be demulsified to sewage containing oil emulsion using polytetrafluoroethyltubular tubular membrane include：Including emulsion Water Tank, polytetrafluoroethyltubular tubular ultra-filtration membrane device, oil phase recycling can, water phase recycling can, the emulsion Water Tank is connect by product pump with polytetrafluoroethyltubular tubular ultra-filtration membrane device pipeline, and polytetrafluoroethyltubular tubular ultra-filtration membrane device is connect with oil phase recycling can and water phase recycling can respectively again.The present invention is by using modified hydrophilic type polytetrafluoroethyltubular tubular ultrafiltration membrane, disperse phase liquid in oil-in-water (W/O) type emulsion drops in film surface and soaks and occur to sprawl to a certain degree, under pump pressure promotion, due to the hydrophily of film, water phase first passes through fenestra and forms different degrees of aggregation, followed by organic phase forms different degrees of aggregation across fenestra, organic phase and water phase after via leave original decentralized medium emulsion, to make the grease in emulsion be detached well.
Description
Technical field
The invention belongs to oil-contaminated water of oil field process fields, more particularly to a kind of to utilize polytetrafluoroethyltubular tubular membrane to emulsus
The process system and method for liquid oil-containing sewage demulsification.
Background technology
Most domestic oil field uses waterflooding extraction mode at present, and as oil field enters late high water content period, oil field oil-containing is dirty
Water accounts for about the 70% of oil field total Water, essentially from oil extraction-generated waste water, well-flushing return water, drilling waste water, underground work sewage, multi-purpose station
The tank bottom water of interior various crude oil storage tanks.It is inevitably generated oily wastewater in oil field extracted water, especially contains emulsification greasy dirt
Water is dispersed in water due to there is surfactant that oil droplet is made to be emulsified into stable emulsion in sewage, and oil droplet size is generally in 1-
Between 10 microns and surface forms a tunic, it is difficult to mutually cohere, traditional method is generally using addition chemical agent, such as poly- phosphorus
Acid esters, acrylate copolymer, novolac systems, siliceous etc. demulsifier are demulsified.If in addition, oil-contaminated water of oil field is straight
Outer row is met, since oily substance swims in the water surface, thin film is formed, the oxygen in air can be prevented to be dissolved in the water, made in water
Dissolved oxygen reduce, cause in water body planktonic organism etc. dead due to anoxic, while the photosynthesis of water plant can be hindered, into
One step influences the self purification of water body, causes that water quality is made to foul, destroys the utility value of water resource.
Currently, the continuous concern with people to environment, there is an urgent need to free from environmental pollution or small environmental pollution to break
Newborn dewatering.Such as a kind of preparation methods of oil field demulsifier of patent publication No. CN102807747A, it is characterised in that by molecule
Amount is reacted under bimetallic catalyst effect with propylene oxide for 500 polyoxypropylene polyether polyalcohol, makes high-molecular-weight poly
Ether, then it is mixed to prepare high performance demulsifying agent with containing hydrogen silicone oil, it is applicable in offshore oilfield crude oil dehydration.Such as patent publication No.
A kind of preparation methods of crude oil rapid demulsifier of CN102993434A, it is characterized in that in the presence of base catalyst, by initiator phenol
Polyimide resin carries out embedding copolymerization with ethylene oxide, propylene oxide and obtains polyether demulsification agent, then is crosslinked with silicone oil and elaidin reaction
Demulsifier has the characteristics that fast emulsion breaking, dosage are few.Such as a kind of novel crude oil demulsifiers of patent publication No. CN102399576A and
Preparation method is had it is characterized in that being esterified with polyether type demulsifying agent using butyl acrylate copolymer to original
The demulsification of fat liquor is good.It is by hydrocarbon ils and demulsifier such as a kind of demulsification method for hydrocarbon oil of patent publication No. CN102453495A
It is mixed with water, and mix products is made to be divided into oil phase and water phase under electric field action, gathered wherein the demulsifier contains polyoxyethylene-
Oxypropylene block copolymer, wetting agent and carbon atom number are the aliphatic alcohol of 1-10, can effectively eliminate solid content height
Hydrocarbon ils in grease middle emulsion layer, use easy to spread.Such as a kind of oil field mining liquids of patent publication No. CN102876356A
Breaking dehydrating method, it includes mixing oil field mining liquid, auxiliary demulsifying agent and demulsifier to be, carries out breaking emulsion and dewatering, described broken
Newborn auxiliary agent is to polymerize one or more of AlSnSi alloy, polymerization iron-based flocculating agent, polysilics acid metal salt based flocculating agent, according to
On the basis of the quality of oil field mining liquid, the dosage of demulsifier is 50-10000mg/L.
Breaking method disclosed above is largely demulsified using addition chemical agent, the problem is that addition is broken
Emulsion is costly, demulsification agent producing process is complicated, demulsifier is difficult to degrade in sewage and the demulsifier added exists to dirt
Water causes the problem of secondary pollution.And use the report of UF membrane demulsification also considerably less.Such as patent publication No. CN102453495A
A kind of method and apparatus of ultrafiltration membrane treatment high concentration multiple types waste emulsified mixture, is air-dissolving air-float-ultrafiltration membrane-electrofloatation,
Using high-efficiency dissolved air flotation system, dosing is effectively reduced, promotes demulsification.Ultrafiltration system selection flux is big, separation is imitated
The ultrafiltration membrane that rate is high, membrane lifetime is grown, realizes water-oil separating, while repeatedly being concentrated to emulsion, skimming；Electrolysis
The oils of Bubble-floating Method removal residual oil emulsion and dissolving, the COD value that further degradation is discharged.Such as patent publication No.
CN101708912A emulsion sewage membrane treatment process, including pretreatment, metal pipe type film and organic film process, advantage can solve
Existing emulsion cost of sewage disposal is high, realizes oil emulsion comprehensive utilization, emulsion sewage qualified discharge or reuse.Therefore, right
In emulsus liquid oil-containing sewage, in the case where not adding demulsifier, how UF membrane demulsification technology to be used just to seem particularly necessary
With it is important.
Invention content
The object of the present invention is to provide a kind of techniques being demulsified to emulsus liquid oil-containing sewage using polytetrafluoroethyltubular tubular membrane
System and method.
To realize that goal of the invention, the present invention take the following technical solution：
A kind of process system to the demulsification of sewage containing oil emulsion, including emulsion Water Tank, polytetrafluoroethyltubular tubular are super
Filter membrane device, oil phase recycling can, water phase recycling can, the emulsion Water Tank are super by product pump and polytetrafluoroethyltubular tubular
Filter membrane device pipeline connects, and polytetrafluoroethyltubular tubular ultra-filtration membrane device is connect with oil phase recycling can and water phase recycling can respectively again.
Preferably, cartridge filter is arranged between the product pump and polytetrafluoroethyltubular tubular ultra-filtration membrane device.
Preferably, the oil of recycling is processed by the oil phase recycling can by oil pump.
Preferably, the water phase recycling can enters active carbon filter by water pump carries out reusing sewage.
Preferably, the aperture of the cartridge filter is 5 μm.
Preferably, the polytetrafluoroethyltubular tubular ultra-filtration membrane device inner pressed tubular ultra-filtration membrane device, tubular membrane are adopted
With modified hydrophilic type polytetrafluoroethylene (PTFE) material, membrane filtration aperture is at 0.05-0.1 microns.
Preferably, the active carbon filter using 200-300 mesh, allusion quotation value 800-1200 Powdered Activated Carbon.
The invention further relates to the methods being demulsified to sewage containing oil emulsion, take the following technical solution：
Include by the sewage collecting of oil field or gas field generation to emulsion sewage to the method for the demulsification of sewage containing oil emulsion
It in tank, is demulsified successively through cartridge filter, polytetrafluoroethyltubular tubular ultra-filtration membrane device by product pump sewage, oil phase enters
Oil phase recycling can, water phase enters water phase recycling can, and after being purified using active carbon filter, sewage can be with reuse.
Preferably, the operating pressure of the product pump is 0.1-0.4MPa
Preferably, the polytetrafluoroethyltubular tubular ultra-filtration membrane device using modified hydrophilic type polytetrafluoroethylene (PTFE) material,
Pore size filter is at 0.05-0.1 microns, and according to the needs of filter area, by 8 millimeters of several diameters, length is 1-5 meters in length
Acidproof, alkaline-resisting, solvent-proof polytetrafluoroethyltubular tubular membrane is constituted.
It is by using modified hydrophilic type polytetrafluoroethyltubular tubular ultrafiltration membrane, oil-in-water (W/ that the present invention, which carries out emulsion breaking principle,
O) disperse phase liquid in type emulsion drops in film surface and soaks and occur to sprawl to a certain degree, under pump pressure promotion, due to film
Hydrophily, water phase first passes through fenestra and forms different degrees of aggregation, followed by organic phase is formed in various degree across fenestra
Aggregation, organic phase and water phase after via leave original decentralized medium emulsion, to make the grease in emulsion obtain
Separation well.
Advantages of the present invention：(1) modified hydrophilic type polytetrafluoroethyltubular tubular membrane ultrafiltration is used, is transported in 0.1-0.4Mpa pressure
Under row, organic phase and water phase is made to leave original decentralized medium emulsion.(2) polytetrafluoroethyltubular tubular membrane, pore size filter selection
Demulsification filtering is carried out at 0.05-0.1 microns.(3) water phase passes through activated carbon filtering tank, using 200-300 mesh, allusion quotation value in 800-
1200 Powdered Activated Carbon realizes reusing sewage using the oil removing decolorization adsorption property of powder activity.(4) polytetrafluoroethyl-ne is used
Alkene tubular type film device is demulsified to be compared with chemical agent demulsification, is had the application that is efficient, avoiding chemical demulsifier that is demulsified, is subtracted
Few pollution to oil field or gas field environment, while being conducive to the separation of oil phase and water phase, it realizes the reuse of oil phase and water phase, realizes
The bumper harvests of economic benefit and environmental benefit, specific implementation mode are as follows.
Description of the drawings
Fig. 1 is the process system flow chart of the present invention being demulsified to sewage containing oil emulsion.
Specific implementation mode
Below to by embodiment, the invention will be further described：
Embodiment 1
A kind of process system to the demulsification of sewage containing oil emulsion as shown in the figure, including emulsion Water Tank 1, polytetrafluoro
Ethylene tubular type ultra-filtration membrane device 4, oil phase recycling can 5, water phase recycling can 7, the emulsion Water Tank 1 by product pump 2 with
It is connect successively with cartridge filter 3,4 pipeline of polytetrafluoroethyltubular tubular ultra-filtration membrane device, polytetrafluoroethyltubular tubular ultra-filtration membrane device 4
It is connect respectively with oil phase recycling can 5 and water phase recycling can 7 again；The oil phase recycling can 5 is carried out the oil of recycling by oil pump 6
Working process；The water phase recycling can 7 enters active carbon filter 9 by water pump 8 and carries out reusing sewage；The security personnel
The aperture of filter 3 is 5 μm；The polytetrafluoroethyltubular tubular ultra-filtration membrane device 4 is inner pressed tubular ultra-filtration membrane device, tubular membrane
Using hydrophilic polytetrafluoroethylene (PTFE) material, membrane filtration aperture is at 0.05-0.1 microns, according to the needs of filter area, by several straight
8 millimeters of diameter, acidproof, alkaline-resisting, the solvent-proof polytetrafluoroethyltubular tubular membrane that length is 1-5 meters in length are constituted；The activity
Carbon filter 8 using 200-300 mesh, allusion quotation value 800-1200 Powdered Activated Carbon.
The method being demulsified to sewage containing oil emulsion by above-mentioned process system includes the dirt for generating oil field or gas field
Water is collected into emulsion Water Tank, is filled successively through cartridge filter, polytetrafluoroethyltubular tubular ultrafiltration membrane by product pump sewage
It sets and is demulsified, oil phase enters oil phase recycling can, and water phase enters water phase recycling can, dirty after being purified using active carbon filter
Water can be with reuse；The operating pressure of the product pump is 0.1-0.4MPa.Case one
Petrochina company Liaohe Oil Field has been enter into high water cut viscous heavy crude oil, and polyfluortetraethylene pipe is utilized using the present invention is a kind of
The method that formula film is demulsified to sewage containing oil emulsion, under the operation of 0.1-0.4Mpa pressure, the emulsion for handling 500 ton days is dirty
Water makes organic phase and water phase leave original decentralized medium, its water phase is made to reach oil field reinjection water requirement, reduces the dirt of environment
Dye, sampling analysis after demulsification see the table below testing result.
1 oil field emulsion sewage detection data of table
| Analysis project | Oily (mg/L) | Suspended matter (mg/L) |
| Before demulsification | 117 | 84 |
| Before demulsification | 5 | 1 |
Case two
Injection methanol is needed during the Chang Bei gas-field exploitations of petrochina Yulin, is prevented hydrate from generating and is blocked pipeline, in gas collection
It stands and generates methanol wastewater after gas-liquid separation.Due to oily emulsification degree height, water treatment mainly uses coagulant precipitation technique, removal
Oil, suspended matter in water, efficiency are relatively low.It is a kind of broken to containing oil emulsion sewage using polytetrafluoroethyltubular tubular membrane using the present invention
The method of breast handles the emulsion sewage of 100 ton days, organic phase and water phase is made to leave original under the operation of 0.1-0.4Mpa pressure
The decentralized medium come, makes its water phase reach gas field reinjected water requirement, reduces the pollution of environment, sampling analysis after demulsification see the table below
Testing result.
2 gas field emulsion sewage detection data of table
| Analysis project | Oily (mg/L) | Suspended matter (mg/L) |
| Before demulsification | 109 | 74 |
| Before demulsification | 3 | 1 |
Above-mentioned analysis of cases, with deepening continuously for current oil field or gas field development, oil field or gas field have been enter into High water cut
Development late stage wastes water money if extraction sewage can bring environment prodigious pollution without processing direct emission up to standard
Source.Using a kind of method being demulsified to sewage containing oil emulsion using polytetrafluoroethyltubular tubular membrane of the present invention, grease point is realized
It from reinjected water requirement is reached, meets the needs of production, and obtains larger economic benefit, be of great significance.It is described above
Only the embodiment of the present invention is not intended to limit the scope of the invention, every to be made using present specification
Equivalent structure or equivalent flow shift, be applied directly or indirectly in other relevant technical fields, be similarly included in this
In the scope of patent protection of invention.
Claims (10)
1. a kind of process system to the demulsification of sewage containing oil emulsion, it is characterised in that：Including emulsion Water Tank, polytetrafluoroethyl-ne
Alkene tubular ultra-filtration membrane device, oil phase recycling can, water phase recycling can, the emulsion Water Tank pass through product pump and polytetrafluoroethyl-ne
Alkene tubular ultra-filtration membrane installs pipes connection, and polytetrafluoroethyltubular tubular ultra-filtration membrane device is recycled with oil phase recycling can and water phase respectively again
Tank connects.
2. the process system according to claim 1 to the demulsification of sewage containing oil emulsion, it is characterised in that：The material
Cartridge filter is set between pump and polytetrafluoroethyltubular tubular ultra-filtration membrane device.
3. the process system according to claim 1 or 2 to the demulsification of sewage containing oil emulsion, it is characterised in that：Described
The oil of recycling is processed by oil phase recycling can by oil pump.
4. the process system according to claim 1 or 2 to the demulsification of sewage containing oil emulsion, it is characterised in that：Described
Water phase recycling can enters active carbon filter by water pump and carries out reusing sewage.
5. the process system according to claim 3 to the demulsification of sewage containing oil emulsion, it is characterised in that：The security personnel
The aperture of filter is 5 μm.
6. the process system according to claim 1 or 2 to the demulsification of sewage containing oil emulsion, it is characterised in that：Described
Polytetrafluoroethyltubular tubular ultra-filtration membrane device is inner pressed tubular ultra-filtration membrane device, and tubular membrane uses modified hydrophilic type polytetrafluoroethylene (PTFE)
Material, membrane filtration aperture is at 0.05-0.1 microns.
7. the process system according to claim 4 to the demulsification of sewage containing oil emulsion, it is characterised in that：The activity
Carbon filter using 200-300 mesh, allusion quotation value 800-1200 Powdered Activated Carbon.
8. the method for pair demulsification of sewage containing oil emulsion, it is characterised in that：Include arriving the sewage collecting that oil field or gas field generate
In emulsion Water Tank, broken successively through cartridge filter, polytetrafluoroethyltubular tubular ultra-filtration membrane device by product pump sewage
Breast, oil phase enter oil phase recycling can, and water phase enters water phase recycling can, and after being purified using active carbon filter, sewage can return
With.
9. the method according to claim 8 to the demulsification of sewage containing oil emulsion, it is characterised in that：The product pump
Operating pressure is 0.1-0.4MPa.
10. the process system according to claim 8 to the demulsification of sewage containing oil emulsion, it is characterised in that described poly- four
Vinyl fluoride tubular type ultra-filtration membrane device is inner pressed tubular ultra-filtration membrane device, and tubular membrane uses hydrophilic polytetrafluoroethylene (PTFE) material, film
Pore size filter carries out the demulsification of emulsion under 0.05-0.1 microns, realizes the separation of oil phase and water phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495844.6A CN108439627A (en) | 2018-05-22 | 2018-05-22 | A kind of process system and method to the demulsification of sewage containing oil emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN116999904A (en) * | 2023-10-07 | 2023-11-07 | 哈尔滨岛田大鹏工业股份有限公司 | Device for separating emulsified oil in cleaning fluid |
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