CN115651620B - Non-polyether low-temperature demulsification and preparation method thereof - Google Patents
Non-polyether low-temperature demulsification and preparation method thereof Download PDFInfo
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- 239000004721 Polyphenylene oxide Substances 0.000 title claims abstract description 36
- 229920000570 polyether Polymers 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229940092714 benzenesulfonic acid Drugs 0.000 claims abstract description 19
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 6
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 6
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 6
- 239000005642 Oleic acid Substances 0.000 claims description 6
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 6
- OCBHHZMJRVXXQK-UHFFFAOYSA-M benzyl-dimethyl-tetradecylazanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 OCBHHZMJRVXXQK-UHFFFAOYSA-M 0.000 claims description 6
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 6
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 6
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- -1 alkyl imidazoline Chemical compound 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 20
- 238000006297 dehydration reaction Methods 0.000 abstract description 20
- 239000010779 crude oil Substances 0.000 abstract description 13
- 239000002904 solvent Substances 0.000 abstract description 6
- 238000004945 emulsification Methods 0.000 abstract description 5
- 150000003242 quaternary ammonium salts Chemical class 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 150000004996 alkyl benzenes Chemical class 0.000 description 4
- VWSLLSXLURJCDF-UHFFFAOYSA-N 2-methyl-4,5-dihydro-1h-imidazole Chemical compound CC1=NCCN1 VWSLLSXLURJCDF-UHFFFAOYSA-N 0.000 description 3
- SXPWTBGAZSPLHA-UHFFFAOYSA-M cetalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SXPWTBGAZSPLHA-UHFFFAOYSA-M 0.000 description 3
- 229960000228 cetalkonium chloride Drugs 0.000 description 3
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- SFVFIFLLYFPGHH-UHFFFAOYSA-M stearalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SFVFIFLLYFPGHH-UHFFFAOYSA-M 0.000 description 3
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- HMDFOXQIYPYCRX-UHFFFAOYSA-N 1-(2-chloropropan-2-yl)-2-dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1C(C)(C)Cl HMDFOXQIYPYCRX-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a non-polyether low-temperature demulsifier and a preparation method thereof. The non-polyether low-temperature demulsifier comprises the following raw materials in percentage by mass based on 100% of the total mass of the raw materials: 0-80% of quaternary ammonium salt; 0-80% of benzenesulfonic acid; 0-10% of imidazoline; 10-30% of solvent; 10-30% of water. A preparation method of a non-polyether low-temperature demulsifier comprises the following steps: a. raw materials are added into a reaction kettle in proportion; b. stirring for 20-30 min, and discharging to obtain the non-polyether low-temperature demulsifier. The beneficial effects of the invention are as follows: is suitable for low temperature wax precipitation and serious emulsification of crude oil, and has the advantages of high dehydration rate and short dehydration time.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a non-polyether low-temperature demulsifier and a preparation method thereof
Background
Demulsification and dehydration are indispensable links in the crude oil extraction process. The higher the temperature is, the more favorable for demulsification and dehydration of crude oil, but the temperature of part of oilfield produced fluid is lower than 50 ℃, and the demulsification and dehydration difficulty is greatly increased on the premise of not increasing the cost of a heater, so that the development of an efficient low-temperature demulsifier product is necessary.
Chinese patents CN 113621405A, CN 113481026A, CN 113025374A and the like disclose low-temperature demulsifiers suitable for demulsification of crude oil below 50 ℃ and a preparation method thereof, the low-temperature demulsifiers solve the problem of low-temperature demulsification of some crude oil, but the low-temperature demulsifiers described in more than 30 patents all contain polyether-type demulsifiers, and the number of non-polyether low-temperature demulsifiers is very small.
Chinese patent CN 112048337A discloses a low-temperature demulsifier with good thick oil emulsification and dehydration effect at low temperature of 15-30 ℃. The low-temperature demulsifier is a eutectic solvent, the dehydration rate of common thickened oil (Jinjia 8 thickened oil) reaches 99 percent at 30 ℃, but the use amount of the low-temperature demulsifier reaches tens of thousands of ppm, and the low-temperature demulsifier does not belong to the category of conventional demulsifiers.
Chinese patent CN 108865219A discloses a low-temperature demulsifier using cationic organosilicon surfactant as main agent, and when the concentration is used at 50ppm, the demulsification rate of crude oil can reach 99.0% at 40 ℃. However, the Si-O-Si in the main agent of the low-temperature demulsifier is a variant of polyether C-O-C, and the cost of the silicon-containing demulsifier is obviously higher than that of the conventional polyether demulsifier.
Therefore, a non-polyether low-temperature demulsifier which can solve the problems of low-temperature dehydration and low-temperature wax precipitation, serious emulsification and short treatment time of crude oil becomes a key point for solving the problems.
Disclosure of Invention
The invention aims to provide a non-polyether low-temperature demulsifier which has the advantages of low raw material cost and good low-temperature demulsification performance.
The invention also provides a preparation method of the non-polyether low-temperature demulsifier, and the prepared non-polyether low-temperature demulsifier has the advantages of low raw material cost and good low-temperature demulsification performance.
In order to achieve the purpose, the invention adopts the following technical scheme that the non-polyether low-temperature demulsifier comprises the following raw materials in percentage by mass based on 100% of the total mass of the raw materials:
0-80% of quaternary ammonium salt;
0-80% of benzenesulfonic acid;
0-10% of imidazoline;
10-30% of solvent;
10 to 30 percent of water
Wherein the quaternary ammonium salt is dodecyl trimethyl ammonium chloride and dodecyl dimethyl benzyl chloride
One or more of ammonium, tetradecyldimethylbenzyl ammonium chloride, hexadecyltrimethyl ammonium chloride, hexadecyldimethylbenzyl ammonium chloride and octadecyldimethylbenzyl ammonium chloride; the benzene sulfonic acid adopts one or more of benzene sulfonic acid, dialkyl benzene sulfonic acid and heavy alkyl benzene sulfonic acid; the imidazoline is one or two of 2-methylimidazoline and oleic acid imidazoline; the alcohol solvent is one or more of methanol, ethanol, glycol and isopropanol.
A preparation method of a non-polyether low-temperature demulsifier comprises the following steps:
a. the raw materials are mixed according to the proportion of 0 to 80 percent of quaternary ammonium salt, 0 to 80 percent of benzenesulfonic acid, 0 to 10 percent of imidazoline and 10 percent of solvent
30% Of water and 10-30% of water by mass percent into a reaction kettle, wherein the quaternary ammonium salt is one or more of dodecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, hexadecyl trimethyl ammonium chloride, hexadecyl dimethyl benzyl ammonium chloride and octadecyl dimethyl benzyl ammonium chloride; the benzene sulfonic acid adopts one or more of benzene sulfonic acid, dialkyl benzene sulfonic acid and heavy alkyl benzene sulfonic acid; the imidazoline is one or two of 2-methylimidazoline and oleic acid imidazoline; the alcohol solvent is one or more of methanol, ethanol, glycol and isopropanol;
b. stirring for 20-30 min, and discharging to obtain the non-polyether low-temperature demulsifier.
Preferably, the demulsification temperature of the non-polyether low-temperature demulsifier is 35-45 ℃ and the dosage is 100-500 ppm. The beneficial effects of the invention are as follows: is suitable for low temperature wax precipitation and serious emulsification of crude oil, and has the advantages of high dehydration rate and short dehydration time.
Detailed Description
The invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the same and to refer to the description. Benzenesulfonic acid, alkylbenzenesulfonic acid, dialkylbenzenesulfonic acid, and heavy alkylbenzenesulfonic acid
Example 1
A. 617g of dodecyl trimethyl ammonium chloride, 56g of benzenesulfonic acid, 7g of oleic acid imidazoline, 160g of ethanol and 160g of water are added into a reaction kettle;
b. stirring for 25min, and discharging to obtain the non-polyether low-temperature demulsifier.
Example 2
A. 695g of dodecyl dimethyl benzyl ammonium chloride, 5g of alkylbenzene sulfonic acid, 150g of methanol and 150g of water are added into a reaction kettle;
b. stirring for 20min, and discharging to obtain the non-polyether low-temperature demulsifier.
Example 3
A. 4g of tetradecyldimethylbenzyl ammonium chloride, 596g of dialkyl benzene sulfonic acid, 10g of alkyl imidazoline, 195g of ethylene glycol and 195g of water are added into a reaction kettle;
b. Stirring for 30min, and discharging to obtain the non-polyether low-temperature demulsifier.
Example 4
A. 400g of tetradecyldimethylbenzyl ammonium chloride, 400g of hexadecyl trimethyl ammonium chloride, 100g of isopropanol and 100g of water are added into a reaction kettle;
b. Stirring for 28min, and discharging to obtain the non-polyether low-temperature demulsifier.
Example 5
A. Adding 400g of dialkyl benzene sulfonic acid, 400g of heavy alkyl benzene sulfonic acid, 50g of ethanol, 50g of isopropanol and 100: 100g of water into a reaction kettle;
b. Stirring for 26min, and discharging to obtain the non-polyether low-temperature demulsifier.
Example 6
A. 150g of hexadecyl dimethyl benzyl ammonium chloride, 150g of octadecyl dimethyl benzyl ammonium chloride, 50g of 2-methylimidazoline, 50g of oleic acid imidazoline, 300 g of isopropanol and 300 g of water are added into a reaction kettle;
b. stirring for 27min, and discharging to obtain the non-polyether low-temperature demulsifier.
Data analysis
The non-polyether low temperature demulsifier prepared in example 1 was used for demulsifier performance tests with an imported demulsifier (polyether) and a demulsifier commonly used in offshore oil fields (polyether). The evaluation method comprises the following steps: SY/T5280-2018 general technical Condition of crude oil demulsifier; oil sample volume (BS & W): 100ml (7%); dehydration temperature: 35 ℃; table 1 was obtained.
Table 1 low temperature demulsifier a dehydration data
The non-polyether low temperature demulsifier prepared in example 2 was used for demulsifier performance tests with an imported demulsifier (polyether) and a conventional demulsifier for offshore oil fields (polyether). The evaluation method comprises the following steps: SY/T5280-2018 general technical Condition of crude oil demulsifier; oil sample volume (BS & W): 100ml (60%); dehydration temperature: 40 ℃; table 2 was obtained.
Table 2 low temperature demulsifier B dehydration data
The non-polyether low temperature demulsifier prepared in example 3 was used for demulsifier performance tests with an imported demulsifier (polyether) and a conventional demulsifier for offshore oil fields (polyether). The evaluation method comprises the following steps: SY/T5280-2018 general technical Condition of crude oil demulsifier; oil sample volume (BS & W): 100ml (14%); dehydration temperature: 45 ℃; table 3 was obtained.
Table 3 dehydration data for low temperature demulsifier C
As can be seen from tables 1-3, the demulsifier prepared according to the method has strong general applicability. Aiming at crude oil with low temperature wax precipitation, serious emulsification and short dehydration time, the dehydration rate of the crude oil reaches more than 85 percent when the on-site dehydration temperature is 35-45 ℃ and the demulsifier is added with 100-150 ppm. Aiming at the extremely serious dirty oil tank emulsified oil, when the demulsifier is filled with 500ppm, the 8-hour dehydration rate reaches more than 85 percent, and the method is suitable for the treatment of the dirty oil tank emulsified oil.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (2)
1. The non-polyether low-temperature demulsifier is characterized in that the total mass of the raw materials is 100%, and the raw materials comprise the following components in percentage by mass:
Dodecyl trimethyl ammonium chloride 61.7%;
5.6% of benzenesulfonic acid;
Oleic acid imidazoline 0.7%;
Ethanol 16%;
16% of water;
Or (b)
0.4% Of tetradecyldimethylbenzyl ammonium chloride;
59.6% of dialkyl benzene sulfonic acid;
1.0% of alkyl imidazoline;
19.5% of ethanol;
19.5% of water.
2. A method of preparing the non-polyether low temperature demulsifier as defined in claim 1, comprising the steps of:
a. Adding 61.7% of dodecyl trimethyl ammonium chloride, 5.6% of benzenesulfonic acid, 0.7% of oleic acid imidazoline, 16% of ethanol, 16% of water or 0.4% of tetradecyl dimethyl benzyl ammonium chloride, 59.6% of dialkylbenzenesulfonic acid, 1.0% of alkyl imidazoline, 19.5% of ethanol and 19.5% of water into a reaction kettle according to the mass percentage;
b. stirring for 20-30 min, and discharging to obtain the non-polyether low-temperature demulsifier.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO812057L (en) * | 1980-06-30 | 1982-01-04 | Exxon Production Research Co | PROCEDURE FOR EXTENDING EMULSIONS AND AGENTS |
| CN1510101A (en) * | 2002-12-24 | 2004-07-07 | 高芒来 | Uses of mono-molecular monoquaternary ammonium salt and mono-molecular polyqualernary ammonium salts |
| CN101716475A (en) * | 2009-11-11 | 2010-06-02 | 中国科学院化学研究所 | Reversed phase emulsion splitter and preparation method thereof |
| EP2781581A1 (en) * | 2013-03-21 | 2014-09-24 | Shell Internationale Research Maatschappij B.V. | Composition and process for demulsifying oil/water emulsions |
| CN104629793A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Condensate oil emulsion de-emulsifier and applications thereof |
| CN108531156A (en) * | 2018-04-03 | 2018-09-14 | 东营市百扬石油科技有限责任公司 | Viscous crude suitable for offshore oilfield disperses oil recovery auxiliary agent |
| WO2019015828A1 (en) * | 2017-07-20 | 2019-01-24 | Clariant International Ltd | Demulsifiers and a method of using demulsifiers for breaking emulsions of water and crude oil |
| CN111808595A (en) * | 2020-07-20 | 2020-10-23 | 中国石油大学(华东) | Application of biquaternary ammonium salt surfactant in viscosity reduction of thick oil |
| CN114957079A (en) * | 2022-06-27 | 2022-08-30 | 长江大学 | Demulsifier and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106190230B (en) * | 2016-08-30 | 2018-03-27 | 陕西省石油化工研究设计院 | A kind of inorganic agent for oilfield sump oil and preparation method thereof |
-
2022
- 2022-09-15 CN CN202211122382.6A patent/CN115651620B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO812057L (en) * | 1980-06-30 | 1982-01-04 | Exxon Production Research Co | PROCEDURE FOR EXTENDING EMULSIONS AND AGENTS |
| CN1510101A (en) * | 2002-12-24 | 2004-07-07 | 高芒来 | Uses of mono-molecular monoquaternary ammonium salt and mono-molecular polyqualernary ammonium salts |
| CN101716475A (en) * | 2009-11-11 | 2010-06-02 | 中国科学院化学研究所 | Reversed phase emulsion splitter and preparation method thereof |
| EP2781581A1 (en) * | 2013-03-21 | 2014-09-24 | Shell Internationale Research Maatschappij B.V. | Composition and process for demulsifying oil/water emulsions |
| CN104629793A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Condensate oil emulsion de-emulsifier and applications thereof |
| WO2019015828A1 (en) * | 2017-07-20 | 2019-01-24 | Clariant International Ltd | Demulsifiers and a method of using demulsifiers for breaking emulsions of water and crude oil |
| CN108531156A (en) * | 2018-04-03 | 2018-09-14 | 东营市百扬石油科技有限责任公司 | Viscous crude suitable for offshore oilfield disperses oil recovery auxiliary agent |
| CN111808595A (en) * | 2020-07-20 | 2020-10-23 | 中国石油大学(华东) | Application of biquaternary ammonium salt surfactant in viscosity reduction of thick oil |
| CN114957079A (en) * | 2022-06-27 | 2022-08-30 | 长江大学 | Demulsifier and preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| Emulsion Acid Diversion Agents for Oil Wells Containing Bottom Water with High Temperature and High Salinity;Ge, Jijiang；Sun, Xiangyu；Liu, Ranran；Wang, Zongsheng；Wang, Lei;AMER CHEMICAL SOC;20201117;第5卷(第45期);全文 * |
| 刘春生.中国石油化工-科技信息指南.中国石化出版社,2000,215-217页. * |
| 针对不同原油品种的破乳剂筛选及工业应用;司朋朋;中国优秀硕博士学位论文全文库;20170415;全文 * |
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