CN105061751B - A kind of preparation method of oil field demulsifier - Google Patents
A kind of preparation method of oil field demulsifier Download PDFInfo
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- CN105061751B CN105061751B CN201510543763.5A CN201510543763A CN105061751B CN 105061751 B CN105061751 B CN 105061751B CN 201510543763 A CN201510543763 A CN 201510543763A CN 105061751 B CN105061751 B CN 105061751B
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- tripolycyanamide
- demulsifier
- trihydroxy methyl
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- formaldehyde
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Abstract
The invention discloses a kind of preparation method of oil field demulsifier.The method synthetic cationic polymers type demulsifier in two steps, there is condensation reaction in tripolycyanamide and formaldehyde first, obtain the trihydroxy methyl compound of tripolycyanamide, it is subsequently adding epichlorohydrin reaction and obtain cationic polymer type demulsifier, this demulsifier is preferable for the breaking emulsion and dewatering effect of crude oil, and abjection water quality is clear, consumption is few.
Description
Technical field
The present invention relates to a kind of preparation method of demulsifier, specifically a kind of synthetic cationic polymers type oil field is broken
The preparation method of Emulsion.
Background technology
Demulsifier is the indispensable chemical assistant in all oil fields, domestic use at present based on polyethers demulsifier,
Such demulsifier is mostly with active hydrogen compoundses as initiator, carries out the moon with oxyalkylene under base metal catalysts effect
Cationic ring opening polymerization reacts, prepared polyoxyethylene poly-oxygen propylene aether class demulsifier.And moisture content in the oil field produced crude oil of many
Increase year by year, the multiple remaining chemical agents in crude oil after produced-water reinjection make emulsification crude oil demulsification dehydration increasingly complex and tired
Difficulty, common polyethers dehydrating effect of emulsion breaker is undesirable, is continuously increased consumption and is still difficult to solve problem, leads to crude oil emulsion
The raising of dehydration cost and the reduction of dehydrating effect, carry out petroleum refining and also result in much not to Crude Oil Transportation process and oil plant
Profit impact.
Content of the invention
For the problem overcoming existing polyethers demulsifier to exist, report purpose of the present invention is to provide a kind of oil field demulsifier
Preparation method.There is condensation reaction with formaldehyde in the method synthetic cationic polymers type demulsifier in two steps, first tripolycyanamide,
Obtain the trihydroxy methyl compound of tripolycyanamide, be subsequently adding epichlorohydrin reaction and obtain cationic polymer type demulsifier,
This demulsifier is preferable for the breaking emulsion and dewatering effect of crude oil, and abjection water quality is clear, consumption is few.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of oil field demulsifier it is characterised in that：Synthetic cationic polymers type breaks the method in two steps
There is condensation reaction with formaldehyde in Emulsion, first tripolycyanamide, obtain the trihydroxy methyl compound of tripolycyanamide, be subsequently adding epoxy
Chloropropane reaction obtains cationic polymer type demulsifier, comprises the following steps：
1）There is condensation reaction in tripolycyanamide and formaldehyde first, and tripolycyanamide is 1 with the mol ratio of formaldehyde:3, in temperature
80-85 DEG C of reaction 1-2 hour, obtains the trihydroxy methyl compound of tripolycyanamide；
2）Then the trihydroxy methyl compound of tripolycyanamide and epichlorohydrin reaction, the trihydroxy methyl chemical combination of tripolycyanamide
Thing is 1 with the mol ratio of epoxychloropropane:2 ~ 1: 1, in -70 DEG C of reaction 6-8 hours of temperature 60 C, obtain quaternary ammonium salt cationic and gather
Compound type demulsifier.
The structural formula of trihydroxy methyl compound is as follows：
Compared with prior art, the demulsifier that the present invention obtains is preferable for the breaking emulsion and dewatering effect of crude oil, abjection
Water quality is clear, consumption is few.
Specific embodiment
Below by specific embodiment, the present invention is further illustrated, but each embodiment is not the tool to the present invention
Body limits.
A kind of preparation method of oil field demulsifier, synthetic cationic polymers type demulsifier, first tripolycyanamide in two steps
There is condensation reaction with formaldehyde, obtain the trihydroxy methyl compound of tripolycyanamide, be subsequently adding epichlorohydrin reaction and obtain sun
Ion polymer type demulsifier.
Example 1
There is condensation reaction in tripolycyanamide and formaldehyde first, and tripolycyanamide is 1 with the mol ratio of formaldehyde:3,85 DEG C of reactions 1
Hour, obtain the trihydroxy methyl compound of tripolycyanamide.
Then the trihydroxy methyl compound of tripolycyanamide and epichlorohydrin reaction, the trihydroxy methyl compound of tripolycyanamide
Mol ratio with epoxychloropropane is 1: 1,60 DEG C and reacts 8 hours, obtains quaternary ammonium salt cationic polymer demulsifier.
Example 2
There is condensation reaction in tripolycyanamide and formaldehyde first, and tripolycyanamide is 1 with the mol ratio of formaldehyde:3,80 DEG C of reactions 2
Hour, obtain the trihydroxy methyl compound of tripolycyanamide.
Then the trihydroxy methyl compound of tripolycyanamide and epichlorohydrin reaction, the trihydroxy methyl compound of tripolycyanamide
Mol ratio with epoxychloropropane is 1: 2,70 DEG C and reacts 6 hours, obtains quaternary ammonium salt cationic polymer demulsifier.
Claims (3)
1. a kind of preparation method of oil field demulsifier it is characterised in that：The method synthetic cationic polymers type breakdown of emulsion in two steps
There is condensation reaction with formaldehyde in agent, first tripolycyanamide, obtain the trihydroxy methyl compound of tripolycyanamide, be subsequently adding epoxy chlorine
Propane reaction obtains cationic polymer type demulsifier, comprises the following steps：
1) there is condensation reaction in tripolycyanamide and formaldehyde first, and tripolycyanamide is 1 with the mol ratio of formaldehyde:3, in temperature 80-85
DEG C reaction 1-2 hour, obtain the trihydroxy methyl compound of tripolycyanamide；
2) and then the trihydroxy methyl compound of tripolycyanamide and epichlorohydrin reaction, the trihydroxy methyl compound of tripolycyanamide with
The mol ratio of epoxychloropropane is 1:2～1: 1, in -70 DEG C of reaction 6-8 hours of temperature 60 C, obtain quaternary ammonium salt cationic polymerization
Thing type demulsifier.
2. oil field demulsifier according to claim 1 preparation method it is characterised in that：The reaction of trihydroxy methyl compound
Equation is as follows：
3. oil field demulsifier according to claim 1 preparation method it is characterised in that：Tripolycyanamide and formaldehyde are sent out first
Raw condensation reaction, tripolycyanamide is 1 with the mol ratio of formaldehyde:3,85 DEG C are reacted 1 hour, obtain the trihydroxy methyl of tripolycyanamide
Compound；Then the trihydroxy methyl compound of tripolycyanamide and epichlorohydrin reaction, the trihydroxy methyl compound of tripolycyanamide with
The mol ratio of epoxychloropropane is 1: 1,60 DEG C and reacts 8 hours, obtains quaternary ammonium salt cationic polymer demulsifier.
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| CN105061751A CN105061751A (en) | 2015-11-18 |
| CN105061751B true CN105061751B (en) | 2017-03-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
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 |
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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 |
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