CN102086408A - Low-temperature demulsifier for crude oil emulsion and production method thereof - Google Patents
Low-temperature demulsifier for crude oil emulsion and production method thereof Download PDFInfo
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- CN102086408A CN102086408A CN2009102542507A CN200910254250A CN102086408A CN 102086408 A CN102086408 A CN 102086408A CN 2009102542507 A CN2009102542507 A CN 2009102542507A CN 200910254250 A CN200910254250 A CN 200910254250A CN 102086408 A CN102086408 A CN 102086408A
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Abstract
The invention discloses a low-temperature demulsifier for a crude oil emulsion and a production method thereof. The low-temperature demulsifier comprises the following components: 35-65% of functional demulsifier, 1-10% of low-temperature complexing agent, 0.5-5% of additive and 35-65% of organic solvent. The production method of the low-temperature demulsifier comprises the step of compositely preparing with a reaction kettle with a clamp sleeve. The low-temperature demulsifier has wide suitable crude oil types and has better application performance compared with the traditional low-temperature demulsifier.
Description
Technical field
The invention belongs to the petrochemical technology field, relate in particular to the low temperature modification emulsion splitter that a class is used at crude oil emulsion low-temperature demulsification technology, be suitable in the low temperature pretreatment technology process of oil field mining liquid low temperature dewatering and refinery's crude oil emulsion, using.
Background technology
Oil field mining liquid is a kind of crude oil emulsion, generally makes crude oil water containing less than 0.5% after thermo-chemical setting dihydration and electro-dewatering processing, reaches outer defeated requirement.According to different crude oils emulsion characteristics, select to adopt low-temperature demulsifying agent, to reduce heat chemistry settling and electro-dewatering technological operation temperature, can save a large amount of heat energy consumptions.Equally, crude oil is defeated at collection, (ship) process of unloading also can be sneaked into certain water gaging, refinery's crude oil is processed, it is higher that 0.5% wet oil still seems, if the crude oil water containing height, crude oil flows, can produce strong emulsification after the heat exchange process effect through crude oil pump shear-mixed, pipeline, and the smooth running of follow-up demulsification technology equipment is made a big impact.Crude oil is after entering the refinery, and general elder generation has kept 50 ℃～80 ℃ of certain temperatures through the tank field sedimentation in the tank field, certain residence time is arranged, and adds the low temperature modification emulsion splitter, can remove 30%～90% free-water and salinity through pre-treatment.Reduce following process device load, to keep the follow up device smooth running, to improve the desalting and dewatering index secure.
The low temperature modification emulsion splitter of using at crude oil emulsion at first should meet good lower temperature application and require: as lower condensation point, viscosity-temperature characteristics, low-temperature fluidity are good preferably; Use need not dilute with water, (use as adopting the water dilution, can increase artificial, equipment cost on the one hand, for the cold district use is very inconvenient in the winter time, increase the insulation of flow sheet equipment, the processing cost of antifreeze, anti-condensation measure, a lot of kind emulsion splitters still can be run into the cloud point problem after dilution is used, the improper meeting of proportioning cause emulsion splitter rotten in a short time, lost efficacy frequent blocking pipe also.) simultaneously, low-temperature demulsifying agent should have better dissolving, dispersion, diffusion in crude oil emulsion, is the prerequisite of giving full play to the emulsion splitter function.The low temperature modification emulsion splitter kind that existing market is used is few, and prescription adopts specific kind, and water and low mass molecule alcohol class are used under specific process conditions at selective crude as solvent mostly, do not have broad spectrum, and applicability is not strong.Disclosed as CN101100615A is a kind of low-temperature demulsifying agent and preparation method thereof, adopts methyl alcohol and water as solvent, inevitablely like this dissolves in crude oil emulsion, dispersing property is poor.CN1011029252A is disclosed to be a kind of cryogenic dewatering demulsifier of crude-oil extract, also adopt methyl alcohol and water as solvent, also adopt multiple functional emulsion splitter as its component, be easy to when dilution is used, surpass the cloud point of emulsion splitter, influenced the emulsion splitter effect of bringing into normal play.CN101580736A discloses a kind of low-temperature demulsifier for dehydration of produced liquid by polymer flooding and preparation method thereof, adopts multiple emulsion splitter and surfactant compound, and solvent is a water.Also there are above-mentioned similar shortcomings and deficiencies.
On the other hand,, oleophylic two kind groups hydrophilic as all containing in the emulsion splitter molecular structure.Quantize to determine the hydrophilic of emulsion splitter molecule, its HLB value (hydrophile-lipophile balance value) of domestic main investigation.The external general RSN[ml that adopts] (RelativeSolubility Number dissolves index relatively), can detect on quantification ground.The emulsion splitter molecule HLB value of good hydrophilic property is big; RSN[ml] dissolve the index height relatively.In with water-methanol isopolarity solvent system, be easier to dissolving, disperse, form homogeneous system.And it is little to work as emulsion splitter molecule HLB value; RSN[ml] dissolve relatively will be difficult in the water-methanol polar solvent system when index hangs down and dissolve, disperse, so just limited the Application of composite of a lot of types, kind emulsion splitter, cause the effect of emulsion splitter poor, very poor to heavy crude adaptability especially, do not have broad spectrum.
Summary of the invention
The objective of the invention is: a kind of formula technique and production method thereof that is applicable to the low-temperature demulsifying agent that the broad variety crude oil emulsion is handled is provided.So that low-temperature demulsifying agent can adapt to the low temperature pretreatment technology service requirements of oil field mining liquid low temperature dewatering and refinery's crude oil emulsion, and makes the compound use in non-polar organic solvent of dissimilar emulsion splitter kinds, reach the wide spectrum suitability effect of emulsion splitter.
The technical scheme that the present invention is taked for its technical problem of solution is:
1, basic composition is of crude oil emulsion low-temperature demulsifying agent:
| Sequence number | Form | Content (w%) |
| 1 | The functional type emulsion splitter | 35％～65％ |
| 2 | The low temperature recombiner | 1％～10％ |
| 3 | Additive | 0.5％～5％ |
| 4 | Organic solvent | 35％～65％ |
More than all content be mass percent.
Wherein: the functional type emulsion splitter is that the emulsion splitter of nonionic polyoxyalkylene type is done agent, comprises series product such as AE, AP, AR, BP, PFA, SP, ZR.It also can be mixture with the tensio-active agent of anionic part, positively charged ion, both sexes class.
The low temperature recombiner be for can impel the functional type emulsion splitter of all kinds, kind and the promotor of the compound use of other component, can significantly reduce the composite demulsifying agent product condensation point, flowability, improve viscosity-temperature characteristics, improve the broad spectrum of emulsion splitter.Adopt alcohol mixture, can when hanging down consumption, reach fine composite effect.The preferred Virahol that adopts.
Additive: do product performance index for carrying, improve the small amount of matter that application performance adds.As in and remaining basic catalyst NaOH and the alkyl benzene sulphonate (ABS) that adds has the surface active cpd of wetting function etc. in the emulsion splitter.
Organic solvent can be alkane solvent, aromatic solvent, and containing carbon number is C5-C12.Also can contain a kind of of organic ester, ketone, ether etc. or several.The aromatic solvent of preferred C9-C10 has better effect to heavy crude.
2, the mode of production of crude oil emulsion low-temperature demulsifying agent is: the functional type emulsion splitter of metering is adopted heating in water bath to 60 ℃～90 ℃, make it to have good mobility.Organic mixed solvent of metering is joined in the reactor of insulation jacket, and adding low temperature recombiner, functional type emulsion splitter emulsion splitter after in batches adding heating under the situation of stirring adds the additive that measures at last, and continuation obtains final product after stirring more than 15 minutes.Mixing speed is 50～200r/min.
Crude oil emulsion low-temperature demulsifying agent of the present invention has following outstanding advantage:
Adopt the low temperature recombiner when hanging down consumption, can make composite effects dissimilar, that the generation of varieties and functions emulsion splitter is good, strengthened the application performance and the effect of low temperature modification emulsion splitter greatly, improve the broad spectrum of emulsion splitter, have good cost performance.
Organic solvent has good lower temperature application as carrier, and convenient the use can be disperseed fast in crude oil emulsion, be dissolved, and reaches low temperature fast emulsion breaking effect.
Crude oil emulsion low-temperature demulsifying agent of the present invention is particularly useful for the heavy crude oil upgrading, and breaking emulsion and dewatering efficient height, water-oil interface are clear, draining band oil is few.
Embodiment
According to more existing commodity emulsion splitter trades mark in the following table, the Application of composite effect of carrying out the crude oil emulsion low-temperature demulsifying agent is as follows:
| The emulsion splitter trade names | Type | RSN[ml] |
| BP2040 | The PO/EO block polyether | 28.5 |
| AR36 | The phenolic resin type polyethers | 10-12 |
| AP121 | Polyamines class polyethers | 19.6 |
| BASOROL?P?DB-9945 | The phenolic resin type polyethers | 8-10 |
| BASOROL?P?DB-9947 | The phenolic resin type polyethers | 12-14 |
| BASOROL?P?DB-9935 | The phenolic resin type polyethers | 17-20 |
| BASOROL?701 | Polyamines class polyethers | 11.8 |
| BASOROL?150R1 | The PO/EO block polyether | 7.6 |
| BASOROL?E9289 | Multifunctional type polyethers | 7.8 |
Embodiment A:
The crude oil emulsion low-temperature demulsifying agent is formed: and polyether type demulsifying agent (trade mark: BP2040), 10%; The phenolic resin type polyether demulsification agent (trade mark: AR36), 20%; The phenolic resin type polyether demulsification agent (trade mark: BASOROL P DB-9945), 20%; Witco 1298 Soft Acid, 0.5%; Mixed aromatic solvent (trade mark: S-1000), 48.5%; Virahol, 1%.
Emulsion splitter is done agent adopt heating in water bath to 80 ℃, make it to have good mobility.To mix in the reactor that 10 kilograms of 485 kilograms of aromatic solvent S-1000 meters, Virahol join insulation jacket, at mixing speed is that the functional type emulsion splitter BP2040 that in batches adds after heating under the situation of 120r/min counts 100 kilograms, 200 kilograms of AR36 meters, 200 kilograms of BASOROL P DB-9945 meters, add 5 kilograms of additive Witco 1298 Soft Acids at last, continue stirring and obtain final product after 15 minutes.
The performance index of the crude oil emulsion low-temperature demulsifying agent that obtains are as follows:
Embodiment B:
The crude oil emulsion low-temperature demulsifying agent is formed: and polyether type demulsifying agent (trade mark: AP121), 15%; The phenolic resin type polyether demulsification agent (trade mark: BASOROL P DB-9947), 20%; Polyamines class polyether demulsification agent (trade mark: BASOROL 701), 20%; Witco 1298 Soft Acid, 0.55%; Mixed aromatic solvent (trade mark: S-1500), 42.45%; Virahol, 2%.
Emulsion splitter is done agent adopt heating in water bath to 80 ℃, make it to have good mobility.To mix in the reactor that 20 kilograms of 424.5 kilograms of aromatic solvent S-1500 meters, Virahol join insulation jacket, at mixing speed is that the functional type emulsion splitter AP121 that in batches adds after heating under the situation of 120r/min counts 150 kilograms, 200 kilograms of BASOROL P DB-9947 meters, 200 kilograms of BASOROL701 meters, add 5.5 kilograms of additive Witco 1298 Soft Acids at last, continue stirring and obtain final product after 15 minutes.
The performance index of the crude oil emulsion low-temperature demulsifying agent that obtains are as follows:
Embodiment C:
The crude oil emulsion low-temperature demulsifying agent is formed: and the phenolic resin type polyether demulsification agent (trade mark: BASOROL P DB-9935), 15%; PO/EO block polyether emulsion splitter (trade mark: BASOROL 150R1), 15%; Multifunctional type polyether demulsification agent (trade mark: BASOROLE9289), 20%; Witco 1298 Soft Acid, 0.5%; Mixed aromatic solvent (trade mark: S-1500), 48%; Virahol, 1.5%.
Emulsion splitter is done agent adopt heating in water bath to 80 ℃, make it to have good mobility.To mix in the reactor that 15 kilograms of 480 kilograms of aromatic solvent S-1500 meters, Virahol join insulation jacket, at mixing speed is that the functional type emulsion splitter BASOROL P DB-9935 that in batches adds after heating under the situation of 120r/min counts 150 kilograms, 150 kilograms of BASOROL 150R1 meters, 200 kilograms of BASOROLP E9289 meters, add 5 kilograms of additive Witco 1298 Soft Acids at last, continue stirring and obtain final product after 15 minutes.
The performance index of the crude oil emulsion low-temperature demulsifying agent that obtains are as follows:
Adopt the low-temperature demulsifying agent in the example as follows to dissimilar crude oil emulsion low-temperature demulsification performance test effects:
Claims (3)
1. crude oil emulsion low-temperature demulsifying agent and production method thereof is characterized in that: basic composition is of crude oil emulsion low-temperature demulsifying agent: functional type emulsion splitter 35%～65%; Low temperature recombiner 1%～10%; Additive 0.5%～5%; Organic solvent 35%～65%; Its production method adopts strap clamp cover reactor is composite and forms.
2. crude oil emulsion low-temperature demulsifying agent according to claim 1 and production method thereof is characterized in that: described low temperature recombiner adopts mixed alcohols, is preferably Virahol.
3. crude oil emulsion low-temperature demulsifying agent according to claim 1 and production method thereof is characterized in that: described organic solvent adopts hydrocarbon mixture C5-C12, preferably adopts the aromatic solvent of C9-C10.
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| CN2009102542507A CN102086408A (en) | 2009-12-08 | 2009-12-08 | Low-temperature demulsifier for crude oil emulsion and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433152A (en) * | 2011-10-22 | 2012-05-02 | 西安建筑科技大学 | Low-temperature emulsion-breaking method for crude oil emulsion |
| CN103396829A (en) * | 2013-08-14 | 2013-11-20 | 宁波北仑千和环保工程有限公司 | Compound-type demulsifier for ship sump oil and preparation method thereof |
| CN105885926A (en) * | 2014-11-25 | 2016-08-24 | 江苏三星能源装备有限公司 | Demulsifier used for oil-water separation of storage tank crude oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029252A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
| CN101497814A (en) * | 2008-12-30 | 2009-08-05 | 江苏三星化工有限公司 | Organosilicon reinforced composite type oil phase dispersed demulsifying agent |
-
2009
- 2009-12-08 CN CN2009102542507A patent/CN102086408A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029252A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
| CN101497814A (en) * | 2008-12-30 | 2009-08-05 | 江苏三星化工有限公司 | Organosilicon reinforced composite type oil phase dispersed demulsifying agent |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433152A (en) * | 2011-10-22 | 2012-05-02 | 西安建筑科技大学 | Low-temperature emulsion-breaking method for crude oil emulsion |
| CN102433152B (en) * | 2011-10-22 | 2014-01-29 | 西安建筑科技大学 | Low-temperature emulsion-breaking method for crude oil emulsion |
| CN103396829A (en) * | 2013-08-14 | 2013-11-20 | 宁波北仑千和环保工程有限公司 | Compound-type demulsifier for ship sump oil and preparation method thereof |
| CN105885926A (en) * | 2014-11-25 | 2016-08-24 | 江苏三星能源装备有限公司 | Demulsifier used for oil-water separation of storage tank crude oil |
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Application publication date: 20110608 |