CN105419856B - A kind for the treatment of process of the aqueous sump oil of high slag inclusion - Google Patents
A kind for the treatment of process of the aqueous sump oil of high slag inclusion Download PDFInfo
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- CN105419856B CN105419856B CN201610016631.1A CN201610016631A CN105419856B CN 105419856 B CN105419856 B CN 105419856B CN 201610016631 A CN201610016631 A CN 201610016631A CN 105419856 B CN105419856 B CN 105419856B
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- sump oil
- oil
- slag inclusion
- aqueous
- high slag
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
Abstract
A kind for the treatment of process of the aqueous sump oil of high slag inclusion, is related to the separating treatment technical field of the aqueous sump oil of slag inclusion.The present invention first first washs sump oil using lye, W/O, O/W/O type emulsification system phase inversion in sump oil is set to form O/W type emulsion, the formation of O/W type emulsion can effectively reduce the viscosity of the aqueous sump oil of high slag inclusion and the interfacial tension of emulsification system, so as to be conducive to the mass transfer of follow-up demulsifier and give full play to demulsification.Sulfuric acid is added afterwards, it is reacted with sodium naphthenate, sodium naphthenate is reduced into the aphthenic acids without emulsification, so as to eliminate its emulsification.Then composite emulsion breaker, flocculant are added successively, part is remained in the further flocculation deposition seperation of scum silica frost of oil reservoir.Finally using the sound cavitation effect of ultrasonic wave, mechanical oscillation effect and fuel factor processing sump oil, further it is dehydrated, takes off slag and recycling crude oil.
Description
Technical field
The present invention relates to the separating treatment technical field of the aqueous sump oil of slag inclusion.
Background technology
Salt in sump oil from each process units of oil plant and the high aqueous sump oil of slag inclusion caused by the sewage draining exit of sewage
Class, oils, colloid, asphalitine, the content of solid particle and salinity are higher.Sump oil source is more miscellaneous, and nature difference is big, contains
Compared with juicy, general debris-containing clay slope is 10%~80%.The genuine milks such as the colloid that itself contains, asphalitine, solid particle
Agent, is enriched in oil-water interfaces, forms firm interfacial film, and intractability is very big.Storage is not only petroleum resources to sump oil for a long time
Waste, and great pollution can be brought to environment, it then becomes necessary to carry out harmless treatment to it.
The method for taking off slag use for sump oil breaking emulsion and dewatering at present is varied, and respectively has pros and cons.Single chemical demulsification
For method to emulsifying serious sump oil, its demulsification is unsatisfactory, and processing is more difficult；Though processing of the centrifugal process to sump oil three phase separation
Effect is preferable, but expense is too high, has larger limitation；Biological treatment pollutes small but long processing period；Though burning method can
To reduce pollution of the demulsification sludge to environment, but it is complicated, and processing cost is high, and the SO generated2Deng the harm to environment compared with
Greatly.With becoming increasingly conspicuous for environmental issue, find that a kind of processing cost is low, the efficient and environmental-friendly technique that is demulsified has become
The inexorable trend of sump oil processing.
With the development of technology of reservoir sweep, the various medicaments added in oil extraction cause the emulsion stability of follow-up sump oil
It is high, and adding single demulsifier often has larger limitation, this causes sump oil demulsification more difficult.Therefore, it is necessary to
Ultrasound is introduced in chemical demulsification technique, the efficient demulsification to sump oil is realized with chemical agent joint physics ultrasonic method.
The content of the invention
The present invention seeks to for more than the prior art deficiency and defect, propose a kind of processing work of the high aqueous sump oil of slag inclusion
Skill.
The technical scheme is that：After the aqueous sump oil of high slag inclusion is heated to 50~90 DEG C, alkali, acid, demulsification are sequentially added
Agent and flocculant, after Ultrasonic Radiation processing, through sedimentation, make oil, water, slag three phase separation, recycle crude oil.
The present invention first first washs sump oil using lye, makes W/O, O/W/O type emulsification system phase inversion shape in sump oil
Into O/W type emulsion, the formation of O/W type emulsion can effectively reduce the viscosity of the aqueous sump oil of high slag inclusion and the boundary of emulsification system
Face tension force, so as to be conducive to the mass transfer of follow-up demulsifier and give full play to demulsification.But lye can with sump oil it is acid into
Point（Such as aphthenic acids）React, surface reactive material sodium naphthenate of the generation with emulsifying capacity.Therefore added after alkali
Sulfuric acid, makes it react with sodium naphthenate, sodium naphthenate is reduced into the aphthenic acids without emulsification, so as to eliminate it
Emulsification.Then composite emulsion breaker, flocculant are added successively, since demulsification scum silica frost be in electronegativity, therefore add it is inorganic it is positive from
In sub- flocculant and solid particles band electric charge, reduce the affinity of solid particle and hydrone, increase solidifying between particle
Poly- power is to increase the particle diameter of flco, so that part remains in the further flocculation deposition seperation of scum silica frost of oil reservoir.Finally utilize
Sound cavitation effect, mechanical oscillation effect and the fuel factor processing sump oil of ultrasonic wave, are further dehydrated, take off slag and recycling crude oil.
The present invention carries out breaking emulsion and dewatering to the aqueous sump oil of high slag inclusion using chemical agent combining ultrasonic method and takes off Slag treatment, the party
Method cost is low, easy to operate, dehydration rate is high and crude oil recovery rate is high.Sump oil after processed by the invention, the breaking emulsion and dewatering of sump oil
Rate reaches 98.4%, and crude oil recovery rate reaches 96.2%, compared with simple demulsifier breaking emulsion and dewatering recycling crude oil, is respectively increased
49.1% and 32.7%.
Reagent cost of the present invention is small, and equipment investment is few, and Vltrasonic device floor space is small while easy to operate；It is right
While sump oil carries out environmental recovery bonds processing, also effectively realize that the recycling of sump oil recycles, that is, reach the mesh of demulsification crude oil freshening
, there is great commercial introduction value.
Further, alkali of the present invention is NaOH, and the mixing ratio of NaOH and the aqueous sump oil of high slag inclusion is 1000~3000
mg∶1L.The concentration range lye can make W/O, O/W/O type emulsification system phase inversion in sump oil form O/W type emulsion, O/W types
The formation of emulsion can effectively reduce the viscosity of the aqueous sump oil of high slag inclusion and the interfacial tension of emulsification system, while lye can be with
Natural acidic materials react in sump oil, generate surface reactive material, are cooperateed with the demulsifier that the later stage manually adds
Effect, further increases demulsification.In the concentration range, lye can make the breaking emulsion and dewatering rate of sump oil improve 5%~10%.
The acid is H2SO4, H2SO4Mixing ratio with the aqueous sump oil of high slag inclusion is 2000~18000 mg: 1L.The concentration
Scope acid solution can be fully with being generated during early period lye sodium naphthenate react, sodium naphthenate is reduced into without breast
The aphthenic acids of change effect, so as to eliminate its emulsification.In the concentration range, can make sump oil breaking emulsion and dewatering rate improve 3%~
8%。
The mixing ratio of the demulsifier and the aqueous sump oil of high slag inclusion is 750~1750 mg: 1L.The concentration range demulsifier
Can be with the multiple chemical medicament in sump oil（Alkali, acid etc.）It is compound to act synergistically, petroleum soap material is generated, in relatively low chemical agent
Under concentration, the reduction of oil water interfacial tension is realized, expand interfacial activity scope.In the concentration range, sump oil can be broken
Newborn dehydration rate improves 5%~13%.
The mixing ratio of the flocculant and the aqueous sump oil of high slag inclusion is 400~2000 mg: 1L.The concentration range flocculant
The electric charge of solid particles band can be neutralized, the scum silica frost that will be remained in by charging neutrality and bridge linking effect after the completion of demulsification in oil reservoir
Further flocculating setting, improves the breaking emulsion and dewatering rate of sump oil.In the concentration range breaking emulsion and dewatering rate of sump oil can improve 5%~
10%。
Alkali is added in the aqueous sump oil of high slag inclusion, acid is added after stirring evenly, demulsifier is added after being stirred for uniformly, then
It is stirring evenly and then adding into flocculant.Under the mode of operation, often step processing for lower step equivalent to Effect of Pretreatment, step by step instead
Glutinous and dehydration, should be dropped, the demulsification and flocculation of sump oil is realized, finally realizes the three phase separation of oil-water residue.
The frequency of the ultrasonic wave is 22~40 KHz, and power is 100~1000 W, 5~20 min of ultrasonic time.At this
Under ultrasound parameter, sound cavitation effect, mechanical oscillation effect and the fuel factor of ultrasound can be given full play to.The sound cavitation effect of ultrasound makes
Obtain and produce local high temperature and pressure inside sump oil in microenvironment, be conducive to coalescence and the sedimentation of water droplet and scum silica frost；Ultrasonic machinery shakes
Dynamic effect can make the grease particle in sump oil that mutually collision occur, and identical particle produces fusion coalescence, is conducive to oil-water residue
Separation, while can make colloid, asphalitine that dissolving occur and disperse, so as to reduce oil-water interfaces film strength, weaken emulsification degree；It is super
The fuel factor of sound can then reduce the viscosity of sump oil, reduce surface tension, destroy the stability of interfacial film, contain so as to fulfill high slag inclusion
The demulsification and flocculation of water sump oil.Under the ultrasound parameter, the breaking emulsion and dewatering rate of sump oil can improve 10%~20%.
Embodiment
Ultrasonic wave assistant medicament（Alkali acid, demulsifier and flocculant）Breaking emulsion and dewatering is carried out to the aqueous sump oil of high slag inclusion to take off at slag
The method of reason, carries out as steps described below：
1st, take the aqueous sump oil of 1000L high slag inclusions to be placed in reaction kettle, be heated to 50~90 DEG C in a water bath.
2nd, under stirring condition, 1000~3000g NaOH solutions are added into sump oil, after 30 min, reach uniformly mixed.
3rd, the H of 2000~18000g is added into sump oil2SO4Solution, stirring are uniformly mixed it.
4th, the demulsifier of 750~1750g is added into sump oil, stirring is uniformly mixed it.
Demulsifier in the present invention uses composite emulsion breaker, i.e. oil-soluble demulsifier SP-2 and water-soluble demulsifier DF-4
In mass ratio 1：1 is compounded.
5th, the flocculant solution of 400~2000g is added into sump oil, stirring is uniformly mixed it.
Flocculant is inorganic cation flocculant poly aluminium chloride（PAC）.
6th, ultrasonic parameters are set, sump oil is demulsified under Ultrasonic Radiation, ultrasound parameter：Ultrasonic frequency 22~40
KHz；100~1000 W of ultrasonic power；Ultrasonic water bath temperature：50~80 DEG C；5~20 min of ultrasonic time.
7th, the sump oil after processing is subjected to sedimentation separation, realizes oil, water, slag three phase separation, recycle crude oil.
The demulsification of step 2,3,4,5,6 to the aqueous sump oil of high slag inclusion plays an important role, and can effectively reduce
Sump oil oil water interfacial tension, reduces viscosity, the emulsification system of sump oil is destroyed, so that sump oil reaches the effect that breaking emulsion and dewatering takes off slag
Fruit, improves crude oil recovery rate.If simple addition demulsifier is extremely limited to the breaking emulsion and dewatering slag detachability of sump oil in step 4,
Therefore use the alkali acid in step 2,3 first to be pre-processed to sump oil, after deforming upon sump oil internal structure, then add Compositional type
Demulsifier and flocculant are further demulsified and are flocculated to sump oil, are finally aided with ultrasonication, sump oil is obtained what is concentrated
Acoustic energy, and then make oil-water residue that relative displacement occur, promote the three phase separation of oil-water residue, finally realize that the breaking emulsion and dewatering of sump oil takes off
Slag.
Example：
1000L sump oils are pumped into reaction kettle from slop tank, after being heated to 80 DEG C, successively will according to step 2,3,4,5,6
Lye, acid solution, demulsifier add in reaction kettle with flocculant and are uniformly mixed and react with sump oil, wherein NaOH：2000 g,
H2SO4：6000 g, demulsifier：1000 g, flocculant PAC：1600 g.Sump (waste oil) pump in reaction kettle is entered in supersonic generator
It is ultrasonically treated（Supersonic frequency is 22 KHz, and power is 500 W）, after 10 min of ultrasound, settled into settlement separation tank
After separating 3.0 h, upper strata oil enters crude oil recovery pond, and middle level sewage enters cesspool, and lower floor's slag then enters sludge-tank, then by slag
After being discharged into centrifuge dehydration, bottom ash is discharged, water mutually enters cesspool, then by the foul water fraction reuse in cesspool, part
Then handled between water treatment vehicle.
Claims (3)
- A kind of 1. treatment process of the aqueous sump oil of high slag inclusion, it is characterised in that：The aqueous sump oil of high slag inclusion is heated to 50~90 DEG C Afterwards, alkali is added in the aqueous sump oil of high slag inclusion, acid is added after stirring evenly, added demulsifier after being stirred for uniformly, be stirred for Flocculant is added after uniformly, after Ultrasonic Radiation processing, through sedimentation, makes oil, water, slag three phase separation, recycles crude oil；The alkali For NaOH, the mixing ratio of NaOH and the aqueous sump oil of high slag inclusion is 1000~3000 mg: 1L；The acid is H2SO4, H2SO4With height The mixing ratio of the aqueous sump oil of slag inclusion is 2000~18000 mg: 1L；The mixing ratio of the demulsifier and the aqueous sump oil of high slag inclusion is 750~1750 mg: 1L；The mixing ratio of the flocculant and the aqueous sump oil of high slag inclusion is 400~2000 mg: 1L；The demulsification Agent is made of oil-soluble demulsifier SP-2 and water-soluble demulsifier the DF-4 compounding of mass ratio 1: 1.
- 2. the treatment process of the aqueous sump oil of high slag inclusion according to claim 1, it is characterised in that：The frequency of the ultrasonic wave is 22~40 KHz, power are 100~1000 W, 5~20 min of ultrasonic time.
- 3. the treatment process of the aqueous sump oil of high slag inclusion according to claim 1, it is characterised in that：The flocculant is inorganic sun Ionic flocculant aluminium polychloride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610016631.1A CN105419856B (en) | 2016-01-12 | 2016-01-12 | A kind for the treatment of process of the aqueous sump oil of high slag inclusion |
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| CN201610016631.1A CN105419856B (en) | 2016-01-12 | 2016-01-12 | A kind for the treatment of process of the aqueous sump oil of high slag inclusion |
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| CN105419856B true CN105419856B (en) | 2018-04-27 |
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| CN106145499B (en) * | 2016-08-26 | 2023-05-05 | 湖北民生生物医药有限公司 | Treatment method and system for dehydropregnenolone acetate slag-containing wastewater |
| CN107082544A (en) * | 2017-06-30 | 2017-08-22 | 天津滨海新区东科技发展有限公司 | It is a kind of to handle the process that oil stores up cabin bilge oil sludge |
| CN109399862A (en) * | 2018-11-07 | 2019-03-01 | 四川众兴汽车零部件有限公司 | A kind of industrial wastewater treatment system and its processing method |
| CN110407686B (en) * | 2019-06-27 | 2022-03-04 | 五矿（北京）稀土研究院有限公司 | Method for separating naphthenic acid from mixed organic matter |
| CN113860678B (en) * | 2021-09-08 | 2023-08-29 | 兰州铁道设计院有限公司 | Integrated equipment and method for rapidly treating oily sludge through multiple modules |
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