CN105061751A - Preparation method of oil field demulsifier - Google Patents
Preparation method of oil field demulsifier Download PDFInfo
- Publication number
- CN105061751A CN105061751A CN201510543763.5A CN201510543763A CN105061751A CN 105061751 A CN105061751 A CN 105061751A CN 201510543763 A CN201510543763 A CN 201510543763A CN 105061751 A CN105061751 A CN 105061751A
- Authority
- CN
- China
- Prior art keywords
- trimeric cyanamide
- trishydroxymethyl
- compound
- demulsifier
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Epoxy Compounds (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The invention discloses a preparation method of an oil field demulsifier. The preparation method comprises two steps for synthesis of the cationic polymer demulsifier. Firstly, melamine and formaldehyde perform condensation reaction to obtain a trimethyl compound of the formaldehyde, and then epoxy chloropropane is added for reaction so as to obtain the cationic polymer demulsifier. The demulsifier has the ideal effect on demulsification and dehydration of crude oil of an oil field, dehydration water is clear, and the using amount of the demulsifier is small.
Description
Technical field
The present invention relates to a kind of preparation method of emulsion splitter, specifically a kind of preparation method of synthetic cationic polymers type oil field demulsifier.
Background technology
Emulsion splitter is the indispensable chemical assistant in all oil fields, current domestic use based on polyethers emulsion splitter, such emulsion splitter is mostly take active hydrogen compounds as initiator, anionic ring-opening polymerization reaction is carried out with olefin oxide, obtained polyoxyethylene poly-oxygen propylene aether class emulsion splitter under base metal catalysts effect.And water ratio increases year by year in much oil field produced crude oil, it is more complicated and difficult that multiple remaining chemical agent after produced-water reinjection in crude oil makes emulsification crude oil demulsification dewater, common polyethers dehydrating effect of emulsion breaker is undesirable, continuous increase consumption is still difficult to deal with problems, cause the crude oil emulsion dehydration raising of cost and the reduction of dehydrating effect, refining of petroleum is carried out to Crude Oil Transportation process and refinery and also causes a lot of disadvantageous effect.
Summary of the invention
In order to overcome existing polyethers emulsion splitter Problems existing, report object of the present invention is to provide a kind of preparation method of oil field demulsifier.The method is synthetic cationic polymers type emulsion splitter in two steps, first trimeric cyanamide and formaldehyde generation condensation reaction, obtain the trishydroxymethyl compound of trimeric cyanamide, then add epichlorohydrin reaction and obtain cationic polymer type emulsion splitter, this emulsion splitter is satisfactory for result for the breaking emulsion and dewatering of crude oil, deviates from that water quality is clear, consumption is few.
The object of the invention is to be achieved through the following technical solutions:
A kind of preparation method of oil field demulsifier, it is characterized in that: the method is synthetic cationic polymers type emulsion splitter in two steps, first trimeric cyanamide and formaldehyde generation condensation reaction, obtain the trishydroxymethyl compound of trimeric cyanamide, then add epichlorohydrin reaction and obtain cationic polymer type emulsion splitter, comprise the following steps:
1) first trimeric cyanamide and formaldehyde generation condensation reaction, the mol ratio of trimeric cyanamide and formaldehyde is 1:3, at temperature 80-85 DEG C of reaction 1-2 hour, obtains the trishydroxymethyl compound of trimeric cyanamide;
2) then the trishydroxymethyl compound of trimeric cyanamide and epichlorohydrin reaction, the trishydroxymethyl compound of trimeric cyanamide and the mol ratio of epoxy chloropropane are 1:2 ~ 1: 1, at temperature 60 C-70 DEG C reaction 6-8 hour, obtain quaternary ammonium salt cationic polymer demulsifier.
The structural formula of trishydroxymethyl compound is as follows:
Compared with prior art, the emulsion splitter that the present invention obtains is satisfactory for result for the breaking emulsion and dewatering of crude oil, deviates from that water quality is clear, consumption is few.
Embodiment
Below by specific embodiment, the present invention is further illustrated, but each embodiment is not all to concrete restriction of the present invention.
A kind of preparation method of oil field demulsifier, synthetic cationic polymers type emulsion splitter in two steps, first trimeric cyanamide and formaldehyde generation condensation reaction, obtain the trishydroxymethyl compound of trimeric cyanamide, then adds epichlorohydrin reaction and obtain cationic polymer type emulsion splitter.
Example 1
First trimeric cyanamide and formaldehyde generation condensation reaction, the mol ratio of trimeric cyanamide and formaldehyde is 1:3, and 85 DEG C are reacted 1 hour, obtain the trishydroxymethyl compound of trimeric cyanamide.
Then the trishydroxymethyl compound of trimeric cyanamide and epichlorohydrin reaction, the trishydroxymethyl compound of trimeric cyanamide and the mol ratio of epoxy chloropropane are 1: 1,60 DEG C and react 8 hours, obtain quaternary ammonium salt cationic polymer demulsifier.
Example 2
First trimeric cyanamide and formaldehyde generation condensation reaction, the mol ratio of trimeric cyanamide and formaldehyde is 1:3, and 80 DEG C are reacted 2 hours, obtain the trishydroxymethyl compound of trimeric cyanamide.
Then the trishydroxymethyl compound of trimeric cyanamide and epichlorohydrin reaction, the trishydroxymethyl compound of trimeric cyanamide and the mol ratio of epoxy chloropropane are 1: 2,70 DEG C and react 6 hours, obtain quaternary ammonium salt cationic polymer demulsifier.
Claims (3)
1. the preparation method of an oil field demulsifier, it is characterized in that: the method is synthetic cationic polymers type emulsion splitter in two steps, first trimeric cyanamide and formaldehyde generation condensation reaction, obtain the trishydroxymethyl compound of trimeric cyanamide, then add epichlorohydrin reaction and obtain cationic polymer type emulsion splitter, comprise the following steps:
1) first trimeric cyanamide and formaldehyde generation condensation reaction, the mol ratio of trimeric cyanamide and formaldehyde is 1:3, at temperature 80-85 DEG C of reaction 1-2 hour, obtains the trishydroxymethyl compound of trimeric cyanamide;
2) then the trishydroxymethyl compound of trimeric cyanamide and epichlorohydrin reaction, the trishydroxymethyl compound of trimeric cyanamide and the mol ratio of epoxy chloropropane are 1:2 ~ 1: 1, at temperature 60 C-70 DEG C reaction 6-8 hour, obtain quaternary ammonium salt cationic polymer demulsifier.
2. the preparation method of oil field demulsifier according to claim 1, is characterized in that: the structural formula of trishydroxymethyl compound is as follows:
。
3. the preparation method of oil field demulsifier according to claim 1, is characterized in that: first trimeric cyanamide and formaldehyde generation condensation reaction, and the mol ratio of trimeric cyanamide and formaldehyde is 1:3, and 85 DEG C are reacted 1 hour, obtain the trishydroxymethyl compound of trimeric cyanamide; Then the trishydroxymethyl compound of trimeric cyanamide and epichlorohydrin reaction, the trishydroxymethyl compound of trimeric cyanamide and the mol ratio of epoxy chloropropane are 1: 1,60 DEG C and react 8 hours, obtain quaternary ammonium salt cationic polymer demulsifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543763.5A CN105061751B (en) | 2015-08-31 | 2015-08-31 | A kind of preparation method of oil field demulsifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543763.5A CN105061751B (en) | 2015-08-31 | 2015-08-31 | A kind of preparation method of oil field demulsifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105061751A true CN105061751A (en) | 2015-11-18 |
| CN105061751B CN105061751B (en) | 2017-03-01 |
Family
ID=54491294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510543763.5A Active CN105061751B (en) | 2015-08-31 | 2015-08-31 | A kind of preparation method of oil field demulsifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105061751B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837828A (en) * | 2016-05-11 | 2016-08-10 | 北京东信龙石油技术有限公司 | Urea resin reverse-phase demulsifier and preparing method thereof |
| CN106256882A (en) * | 2016-07-11 | 2016-12-28 | 威海晨源分子新材料有限公司 | A kind of star-like crude oil demulsifier of oil-in-water type and preparation method thereof |
| CN108130122A (en) * | 2017-12-12 | 2018-06-08 | 中海油天津化工研究设计院有限公司 | A kind of more quaternary amine reverse-phase emulsifiers and preparation method thereof |
| CN111423550A (en) * | 2020-05-14 | 2020-07-17 | 湖北本心环保科技股份有限公司 | Preparation method of demulsifier for promoting oil-water separation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329655A (en) * | 1964-01-31 | 1967-07-04 | Rohm & Haas | Oxyalkylated melamine-formaldehyde condensates and method for their preparation |
| CN103450430A (en) * | 2013-08-22 | 2013-12-18 | 广州振清环保技术有限公司 | Cationic polymer as well as preparation method and application thereof |
| CN103923296A (en) * | 2014-04-09 | 2014-07-16 | 中国海洋石油总公司 | Crude oil demulsifying agent and preparation method thereof |
| CN103936961A (en) * | 2014-04-30 | 2014-07-23 | 中国海洋石油总公司 | Thick oil demulsifying agent and preparation method thereof |
-
2015
- 2015-08-31 CN CN201510543763.5A patent/CN105061751B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329655A (en) * | 1964-01-31 | 1967-07-04 | Rohm & Haas | Oxyalkylated melamine-formaldehyde condensates and method for their preparation |
| CN103450430A (en) * | 2013-08-22 | 2013-12-18 | 广州振清环保技术有限公司 | Cationic polymer as well as preparation method and application thereof |
| CN103923296A (en) * | 2014-04-09 | 2014-07-16 | 中国海洋石油总公司 | Crude oil demulsifying agent and preparation method thereof |
| CN103936961A (en) * | 2014-04-30 | 2014-07-23 | 中国海洋石油总公司 | Thick oil demulsifying agent and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837828A (en) * | 2016-05-11 | 2016-08-10 | 北京东信龙石油技术有限公司 | Urea resin reverse-phase demulsifier and preparing method thereof |
| CN105837828B (en) * | 2016-05-11 | 2018-08-31 | 北京东信龙石油技术有限公司 | A kind of Lauxite reverse-phase emulsifier and preparation method thereof |
| CN106256882A (en) * | 2016-07-11 | 2016-12-28 | 威海晨源分子新材料有限公司 | A kind of star-like crude oil demulsifier of oil-in-water type and preparation method thereof |
| CN106256882B (en) * | 2016-07-11 | 2018-05-11 | 威海金泓集团有限公司 | A kind of star-like crude oil demulsifier of oil-in-water type and preparation method thereof |
| CN108130122A (en) * | 2017-12-12 | 2018-06-08 | 中海油天津化工研究设计院有限公司 | A kind of more quaternary amine reverse-phase emulsifiers and preparation method thereof |
| CN108130122B (en) * | 2017-12-12 | 2020-08-21 | 中海油天津化工研究设计院有限公司 | Multi-quaternary ammonium salt reverse demulsifier and preparation method thereof |
| CN111423550A (en) * | 2020-05-14 | 2020-07-17 | 湖北本心环保科技股份有限公司 | Preparation method of demulsifier for promoting oil-water separation |
| CN111423550B (en) * | 2020-05-14 | 2022-11-29 | 湖北本心环保科技股份有限公司 | Preparation method of demulsifier for promoting oil-water separation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105061751B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105061751A (en) | Preparation method of oil field demulsifier | |
| Wu et al. | Synthesis of polyoxymethylene dimethyl ethers catalyzed by Brønsted acid ionic liquids with alkanesulfonic acid groups | |
| CN103613756B (en) | A kind of protein induced method preparing chiral polyaniline | |
| Arnebold et al. | Resorcinol‐based benzoxazine with low polymerization temperature | |
| CN112569632A (en) | Eutectic solvent composition, preparation method thereof and application thereof in separation of aromatic hydrocarbon | |
| CN103804284B (en) | For the preparation of the system of 3-picoline | |
| CN103421535B (en) | Step-by-step etherification modified crude oil demulsifier and synthetic method thereof | |
| CN103881745B (en) | Advanced road making coal pitch material and preparation method thereof | |
| CN103937535A (en) | Demulsifier for heavy crude oil | |
| CN103772154A (en) | Method for catalyzed synthesis of bisphenol F by using modified hydroxyapatite | |
| Liu et al. | Brønsted-Lewis acidic ionic liquid for the “one-pot” synthesis of biodiesel from waste oil | |
| CN102653685A (en) | Biquaternary ammonium salt type demulsifying agent for crude oil produced liquid and preparation method for demulsifying agent | |
| CN106279077A (en) | A kind of method that composite mixed phosphotungstate catalyzes and synthesizes 5 Hydroxymethylfurfural | |
| Merino et al. | Microwave-Assisted Lignin Solubilization in Protic Ionic Compounds Containing 2, 3, 4, 5-Tetraphenyl-1 H-imidazolium and Inorganic Anions | |
| CN104817513B (en) | The preparation method of heteropoly acid tridemorph quaternary ammonium salt | |
| CN105273200A (en) | Polyquaternary ammonium salt reverse demulsifier and O/W crude oil emulsion demulsification and dehydration method | |
| Liu et al. | Design of a low-temperature ring-opening benzoxazine system using a supramolecular hydrogen-bond structure | |
| CN102702401A (en) | Synthesis method of cationic polyacrylamide with ionic degree of 65-78% | |
| CN105523606A (en) | A composite reverse demulsifier, a preparing method thereof and a using method of the composite reverse demulsifier | |
| CN102942682A (en) | Diimidazole alkane epoxy curing agent | |
| CN103484150B (en) | Polyion-liquid-modified crude oil demulsifier | |
| CN102584554A (en) | Method for preparing raspberry ketone in acidic ionic liquid | |
| KR100924702B1 (en) | Method for separating aromatic compounds from mixture containing aromatic compounds and aliphatic compounds | |
| Krzyżaniak et al. | Equilibrium studies on butane‐1, 4‐diamine extraction with 4‐nonylphenol | |
| CN103923296A (en) | Crude oil demulsifying agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |