CN1100584C - Polymer type crude oil demulsifier - Google Patents
Polymer type crude oil demulsifier Download PDFInfo
- Publication number
- CN1100584C CN1100584C CN98113741A CN98113741A CN1100584C CN 1100584 C CN1100584 C CN 1100584C CN 98113741 A CN98113741 A CN 98113741A CN 98113741 A CN98113741 A CN 98113741A CN 1100584 C CN1100584 C CN 1100584C
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- Prior art keywords
- crude oil
- polymer type
- demulsifier
- oil demulsifier
- type crude
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Abstract
The present invention relates to a polymer type crude oil demulsifier used for dehydration treatment on the gathering and transferring process of crude oil from an oil field. The demulsifier is synthesized from styrene, methyl methacrylate, methyl acrylate, butyl acrylate, iso-octyl acrylate, acrylic acid and methacrylic acid according to a certain proportion. The polymer type crude oil demulsifier has good affinity with crude oil, particularly thick oil, and obtains good demulsification and dehydration effects.
Description
The present invention relates to a kind of polymer type crude oil demulsifier that is used for crude oil gathering and transferring process processed.
Crude oil demulsifier is the chemical agent that processed is widely applied in the crude oil gathering and transferring process.The development of crude oil demulsifier and tensio-active agent are closely-related, and utilizing new synthetic technology to prepare the specific polymers tensio-active agent is present crude oil demulsifier, particularly the new direction of thick oil demulsifier research.Since the fifties, tensio-active agents such as Fatty Alcohol(C12-C14 and C12-C18), lipid acid, alkylphenol polyoxyethylene have been used for crude oil demulsification, have developed the crude oil demulsifier such as oxirane polyethers, polyalcohols oxirane polyethers of oxirane polyethers, the amine of multipolymer, phenolic aldehyde and the alkylphenol-formaldehyde resin of oxyethane and propylene oxide thereafter again in succession.Polyesteramine type that develop the end of the eighties and polyacrylate polymers tensio-active agent have unique demulsification performance.Thereafter, U.S. Pat 4968449 adopts vinylformic acid and methyl acrylic ester to carry out copolymerization again, introducing hydroxyl and carboxyl can improve surfactivity on polymer lateral chain, introduce affinity and intermiscibility that the long-chain dodecyl can improve polymeric surfactant and crude oil.Yet, above-mentioned all kinds of crude oil demulsifiers still exist the preparation component too much, complicated process of preparation or demulsification be not ideal enough particularly for deficiencies such as the viscous crude suitability are relatively poor.
Thereby the object of the present invention is to provide the particularly good polymer type crude oil demulsifier that can improve the crude oil demulsification effect of viscous crude affinity of a kind of and crude oil.
Wherein: a is a vinylbenzene;
The b methyl methacrylate;
C methyl acrylate, butyl acrylate, Isooctyl acrylate monomer;
D is a vinylformic acid;
E is a methacrylic acid;
R1, R2, R3 are alkyl.
The feed composition and the proportioning of this kind polymer type crude oil demulsifier are as follows:
Weight percentages of components (%) vinylbenzene St 30--65 methyl methacrylate MMAc 10--40
Vinylformic acid AA 2--15 methacrylic acid MAA 0--5
Above-mentioned monomer is mixed in proportion; add aromatic solvent such as benzene,toluene,xylene and their mixture; with oil soluble superoxide such as dicumyl peroxide, benzoyl peroxide, lauroyl peroxide or azo-compound such as Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile) is initiator; reaction is 4--10 hour under 60--100 ℃ of temperature, can obtain the polymer type crude oil demulsifier that needs.
Polymer type crude oil demulsifier provided by the invention is introduced aromatic hydrocarbons and acrylic compounds, make itself and crude oil particularly closing property of viscous crude improve, and then can improve the crude oil demulsification effect.
Embodiment 1--5: by various components and the weight ratio difference synthetic polymer type crude oil demulsifier listed as following table.
| The component sequence number | St (％) | MMAc (％) | MAc (％) | BuAc (％) | 2-EHAc (％) | AA (％) | MAA (％) | Make polymer type crude oil demulsifier molecular weight Mw (* 10 3) |
| 1 | 61.4 | 28.9 | 0 | 0 | 0 | 9.7 | 0 | 5.3 |
| 2 | 50 | 26.1 | 0 | 10 | 5.4 | 6.5 | 2 | 12.7 |
| 3 | 30 | 38.3 | 0 | 0 | 17.7 | 14 | 0 | 34.3 |
| 4 | 63 | 10 | 9 | 10 | 1 | 2 | 5 | 7.7 |
| 5 | 50 | 30 | 0 | 5 | 0 | 15 | 0 | 69.9 |
Above-mentioned 5 routine crude oil demulsifiers are used for the Liaohe Oil Field viscous crude, and its dehydration rate is respectively 92.3%, 97.4%, 95.9%, 97.0%, 96.7%.
Claims (1)
1, a kind of polymer type crude oil demulsifier is characterized in that: the molecular structural formula of this kind crude oil demulsifier is as follows:
Wherein: a is a vinylbenzene; B is a methyl methacrylate; C is methyl acrylate, butyl acrylate, Isooctyl acrylate monomer; D is a vinylformic acid; E is a methacrylic acid; R1, R2, R3 are alkyl; The feed composition and the proportioning of this kind crude oil demulsifier are as follows: vinylbenzene St 30-65wt% methyl methacrylate MMAc 10-40wt%
Vinylformic acid AA 2--15wt% methacrylic acid MAA 0--5wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113741A CN1100584C (en) | 1998-01-21 | 1998-01-21 | Polymer type crude oil demulsifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113741A CN1100584C (en) | 1998-01-21 | 1998-01-21 | Polymer type crude oil demulsifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186710A CN1186710A (en) | 1998-07-08 |
| CN1100584C true CN1100584C (en) | 2003-02-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113741A Expired - Fee Related CN1100584C (en) | 1998-01-21 | 1998-01-21 | Polymer type crude oil demulsifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1100584C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110699109A (en) * | 2019-10-16 | 2020-01-17 | 新疆水处理工程技术研究中心有限公司 | Tar ammonia water demulsifier and preparation method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106443C (en) * | 1998-11-13 | 2003-04-23 | 中国石油化工集团公司 | Multicomponent crude oil demulsification dehydration additive |
| CN100388962C (en) * | 2005-06-24 | 2008-05-21 | 中国石油化工股份有限公司 | Non-polyether type demulsifying agent and preparation method thereof |
| CN101255354B (en) * | 2007-03-01 | 2011-05-04 | 中国石油化工股份有限公司 | Non-polyether type thick oil demulsifying agent and preparation thereof |
| CN101352667B (en) * | 2007-07-26 | 2010-08-25 | 中国石油化工股份有限公司 | Demulsifying agent and preparation method and use thereof |
| CN106318444B (en) * | 2016-10-21 | 2017-11-28 | 中国海洋石油总公司 | A kind of polymer-type thick oil demulsifier and preparation method thereof |
| CN113321760A (en) * | 2021-06-09 | 2021-08-31 | 盘锦晨宇石油工程有限公司助剂分公司 | Novel oil-containing sludge oil-water-sand three-phase separating agent and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086066A1 (en) * | 1982-01-29 | 1983-08-17 | The Dow Chemical Company | Use of a quaternized polyamidoamines as demulsifiers |
| CN1037094A (en) * | 1988-11-07 | 1989-11-15 | 西安石油学院 | Efficient thick oil emulsion-breaking agent |
| US4968449A (en) * | 1989-03-17 | 1990-11-06 | Nalco Chemical Company | Alkoxylated vinyl polymer demulsifiers |
| CN1059669A (en) * | 1991-07-23 | 1992-03-25 | 中国石油天然气总公司胜利设计院 | The preparation method of antiphase emulsion breaker of cation polyether model |
| US5100582A (en) * | 1989-12-28 | 1992-03-31 | Nalco Chemical Company | Water soluble polymer as water-in-oil demulsifier |
| CN1100735A (en) * | 1993-09-25 | 1995-03-29 | 锦西信达农药化工有限公司 | Ultra high molecular wt. crude polyether emulsion breaker |
| JPH07310077A (en) * | 1994-05-16 | 1995-11-28 | Toho Chem Ind Co Ltd | Demulsifier for treating crude oil emulsion |
-
1998
- 1998-01-21 CN CN98113741A patent/CN1100584C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086066A1 (en) * | 1982-01-29 | 1983-08-17 | The Dow Chemical Company | Use of a quaternized polyamidoamines as demulsifiers |
| CN1037094A (en) * | 1988-11-07 | 1989-11-15 | 西安石油学院 | Efficient thick oil emulsion-breaking agent |
| US4968449A (en) * | 1989-03-17 | 1990-11-06 | Nalco Chemical Company | Alkoxylated vinyl polymer demulsifiers |
| US5100582A (en) * | 1989-12-28 | 1992-03-31 | Nalco Chemical Company | Water soluble polymer as water-in-oil demulsifier |
| CN1059669A (en) * | 1991-07-23 | 1992-03-25 | 中国石油天然气总公司胜利设计院 | The preparation method of antiphase emulsion breaker of cation polyether model |
| CN1100735A (en) * | 1993-09-25 | 1995-03-29 | 锦西信达农药化工有限公司 | Ultra high molecular wt. crude polyether emulsion breaker |
| JPH07310077A (en) * | 1994-05-16 | 1995-11-28 | Toho Chem Ind Co Ltd | Demulsifier for treating crude oil emulsion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110699109A (en) * | 2019-10-16 | 2020-01-17 | 新疆水处理工程技术研究中心有限公司 | Tar ammonia water demulsifier and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186710A (en) | 1998-07-08 |
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