CN1074926A - The preparation method of demulsifier for mixed crude oil - Google Patents
The preparation method of demulsifier for mixed crude oil Download PDFInfo
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- CN1074926A CN1074926A CN 92100651 CN92100651A CN1074926A CN 1074926 A CN1074926 A CN 1074926A CN 92100651 CN92100651 CN 92100651 CN 92100651 A CN92100651 A CN 92100651A CN 1074926 A CN1074926 A CN 1074926A
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- emulsion splitter
- preparation
- oxyethane
- propylene oxide
- alkali
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Abstract
A kind of preparation method who is used for the emulsion splitter of commingled crude breaking emulsion and dewatering.Being to be initiator with the aliphatic amide, is initiator with epoxyethane water and the thing that makes, and makes block polymer through twice with the epoxy alkane reaction.This emulsion splitter can make efficient, the fast dewatering of commingled crude.
Description
What the present invention relates to is the method for crude oil emulsion splitter, especially for the preparation method of the emulsion splitter of the high-efficiency dehydration of commingled crude.
Coagulate the oil field that multiple oil such as oil, high viscous oil are mixed for colloid, higher viscous crude, the height of asphalt content, base oil properties is changeable, there is quite stable in emulsion, with common emulsion splitter-, need synthetic a kind of emulsion splitter at this mixing oil as PRN4041, PR4031, PRT4031, SP169 etc.-can not reach rapid breaking emulsion and dewatering effect.The scheme that proposes among the document US P3591520 is the amine salt that forms of preparation aliphatic amide and oxyethane, propylene oxide reaction and the aqueous solution of metal chlorides such as the block compound that generates and zinc, calcium, has demulsification preferably for the crude oil of water-in-oil-type.The method that USP4029708 proposes is with replacing amine (as hexamethyl diamines and propylene oxide reaction, then with the chloro propylene oxide reaction, reactant being mixed can be used as petroleum demulsifier, flocculation agent with the solution of heavy metallic salt).
The objective of the invention is to remove crude oil moisture content rapidly with the synthetic a kind of emulsion splitter of comparatively simple method to the efficient breakdown of emulsion of commingled crude, glue.
Technical scheme provided by the present invention is divided into the synthetic emulsion splitter of three reactions steps.(1) the epoxyethane water compound is synthetic: make in 110～150 ℃ of reactions under base catalysis with oxyethane and water (or ethylene glycol).Proportioning raw materials (weight) is: water: oxyethane: alkali=1: 20～50: 0.02～0.10, or ethylene glycol: oxyethane: alkali=1: 2～10: 0.02～0.10; (2) emulsion splitter oil head is synthetic; Initiator with aliphatic amide, with the epoxyethane water compound is initiator, under base catalysis, add propylene oxide reaction system in 110～150 ℃, getting proportioning raw materials (weight) is: aliphatic amide: epoxyethane water compound: propylene oxide: alkali=1: 0.2～5.0: 10～30: 0.2～1.5, the scope 170～250mgKOH/g of control hydroxyl value during reaction; (3) emulsion splitter is synthetic: with emulsion splitter oil head is initiator, add propylene oxide, reacting ethylene oxide and get in 110～150 ℃ of priorities under the base catalysis, proportioning raw materials (weight) is: emulsion splitter oil head: propylene oxide: oxyethane: alkali=1: 5～20: 1～10: 3～15.Control reactant hydroxyl value is at≤45mgKOH/g during reaction.Reaction pressure must not surpass 0.35MPa when adding oxyethane or propylene oxide reaction.
Emulsion splitter synthetic method craft provided by the present invention is simple, and raw material is easy, gets particularly aliphatic amide substep and the reaction of quantitative epoxy alkane, the block compound structural integrity that makes is good, and is fast to mixing oil breakdown of emulsion degree of company, the dewatering efficiency height, it is clear to deviate from water quality, and low-temperature performance is stronger.
Example
(1) the epoxyethane water compound is synthetic: in pressure reaction still, add entry 100g, and KOH20g, the airtight oxyethane 3400g that adds under 110～130 ℃ down reacts, and keeps the still internal pressure not to be higher than 0.35MPa; (2) emulsion splitter oil is synthetic: add quadrol 100g in the pressure reaction still, epoxyethane water compound 100g, KOH80g carries out vacuum hydro-extraction, then adds propylene oxide 1800g and react under 110～130 ℃, and control still internal pressure is not higher than 0.35MPa in the reaction; (3) emulsion splitter is synthetic: in pressure reaction still, add an emulsion splitter oil 150g, and KOH10g, successively adding propylene oxide 1350g, oxyethane 300g participates in reaction down at 110～130 ℃, and control still internal pressure is not higher than 0.35MPa.The emulsion splitter that makes can remove 95% water to commingled crude 2h..
Claims (6)
1, a kind of is raw material with oxyethane, propylene oxide, prepares the method for emulsion splitter, and the preparation that it is characterized by emulsion splitter is finished by three-step reaction, and technology is:
(1) epoxyethane water compound preparation: under base catalysis, oxyethane and water are 110～150 ℃ of reactions down, and proportioning raw materials (weight) is: water: oxyethane: alkali=1: 20～50: 0.02～0.10;
(2) preparation of emulsion splitter oil head: with the aliphatic amide is initiator, under base catalysis, make epoxyethane water and thing and propylene oxide reaction in 110-150 ℃, proportioning raw materials (weight) is: aliphatic amide: epoxyethane water compound: propylene oxide: alkali=1: 0.2～5: 10～30: 0.2～1.5;
(3) emulsion splitter is synthetic: in 110～150 ℃, and under base catalysis, emulsion splitter oil head and propylene oxide, reacting ethylene oxide, proportioning raw materials (weight) is: emulsion splitter oil head: propylene oxide: oxyethane: alkali=1: 5～20: 1～10: 0.03～0.15.
2, the preparation method of emulsion splitter as claimed in claim 1, it is characterized by the synthetic of described epoxyethane water compound, be to be reacted under base catalysis by ethylene glycol and oxyethane to make under 110～150 ℃, its proportioning raw materials (weight) is an ethylene glycol: oxyethane: alkali=1: 2～10: 0.02～0.10.
3, the preparation method of emulsion splitter as claimed in claim 1 or 2, it is characterized by described alkali is potassium hydroxide.
4, the preparation method of emulsion splitter as claimed in claim 1, it is characterized by described aliphatic amide is quadrol.
5, the preparation method of emulsion splitter as claimed in claim 1 is characterized by that the control reacting kettle inner pressure must not surpass 0.35MPa when oxyethane, propylene oxide are participated in reaction.
6, emulsion splitter preparation method as claimed in claim 1 or 2 is characterized by epoxyethane water compound hydroxyl value and is controlled at 130～170mgKOH/g; An emulsion splitter oil hydroxyl value is controlled at 170～250mgKOH/g; The emulsion splitter hydroxyl value is controlled at≤45mgKOH/.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100651 CN1074926A (en) | 1992-01-29 | 1992-01-29 | The preparation method of demulsifier for mixed crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100651 CN1074926A (en) | 1992-01-29 | 1992-01-29 | The preparation method of demulsifier for mixed crude oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1074926A true CN1074926A (en) | 1993-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92100651 Pending CN1074926A (en) | 1992-01-29 | 1992-01-29 | The preparation method of demulsifier for mixed crude oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074926A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090629C (en) * | 1995-09-19 | 2002-09-11 | 诺沃挪第克公司 | Novel Heterocyclic compounds |
| CN102471431A (en) * | 2009-09-17 | 2012-05-23 | 科莱恩金融(Bvi)有限公司 | Alkoxylated trialkanol amine condensates and the use thereof as demulsifiers |
-
1992
- 1992-01-29 CN CN 92100651 patent/CN1074926A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090629C (en) * | 1995-09-19 | 2002-09-11 | 诺沃挪第克公司 | Novel Heterocyclic compounds |
| CN102471431A (en) * | 2009-09-17 | 2012-05-23 | 科莱恩金融(Bvi)有限公司 | Alkoxylated trialkanol amine condensates and the use thereof as demulsifiers |
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