CN112812819A - Low-temperature crude oil demulsifier and preparation method thereof - Google Patents
Low-temperature crude oil demulsifier and preparation method thereof Download PDFInfo
- Publication number
- CN112812819A CN112812819A CN202011621674.5A CN202011621674A CN112812819A CN 112812819 A CN112812819 A CN 112812819A CN 202011621674 A CN202011621674 A CN 202011621674A CN 112812819 A CN112812819 A CN 112812819A
- Authority
- CN
- China
- Prior art keywords
- demulsifier
- temperature
- low
- crude oil
- polyether
- 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.)
- Pending
Links
- 239000010779 crude oil Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims description 34
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003999 initiator Substances 0.000 claims description 14
- -1 alkyl phenolic resin Chemical compound 0.000 claims description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 4
- 229940043237 diethanolamine Drugs 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 230000018044 dehydration Effects 0.000 abstract description 25
- 238000006297 dehydration reaction Methods 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 125000003277 amino group Chemical group 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
Abstract
The invention discloses a low-temperature crude oil demulsifier and a preparation method thereof, wherein the low-temperature crude oil demulsifier is prepared from the following raw materials in percentage by mass:
Description
Technical Field
The invention belongs to the technical field of petrochemicals, and particularly relates to a low-temperature crude oil demulsifier and a preparation method thereof.
Background
The crude oil dehydration is the most important production process for the gathering and transportation treatment of the oil field, and is a key link for ensuring qualified delivery of the crude oil from the oil field and avoiding environmental pollution and formation damage. At present, the crude oil dehydration mainly adopts thermochemical settling dehydration. As the oil field enters a high water content development period, the following problems mainly exist in the operation process of a dehydration system: firstly, the dehydration temperature of partial dehydration stations is high, usually 50 ℃, and the energy consumption is large; secondly, the heating efficiency of the scaling heating furnace of part of pipelines and stations is low, so that the dehydration temperature fluctuation is large, and the water content and the oil content do not reach the standard; and thirdly, the cold transportation problem exists in part of well groups, and the crude oil output temperature is lower. For the reasons, the conventional demulsifier cannot meet the requirements of low-temperature dehydration production, and the oil-water separation process in the low-temperature dehydration process consumes much energy.
Disclosure of Invention
The invention aims to provide a low-temperature crude oil demulsifier and a preparation method thereof, which are used for solving the problems that the conventional demulsifier cannot meet the low-temperature dehydration production requirement and has high energy consumption.
The technical scheme adopted by the invention is as follows: the low-temperature crude oil demulsifier is prepared from the following raw materials in percentage by mass:
the total content of the raw materials is 100 percent.
Further, the industrial polyether demulsifier is as follows: blocked polyether using alcohol as initiator, alkyl phenolic resin blocked polyether, amino modified phenolic resin blocked polyether or blocked polyether using amino as initiator.
The second technical scheme adopted by the invention is that the preparation method of the low-temperature demulsifier comprises the following steps:
step 1, adding a polyether demulsifier drying agent, sulfonic acid and diethanol amine into a reaction kettle with temperature control and stirring, controlling the temperature at 150 ℃, continuously stirring, and reacting for 3-5 hours;
step 2, after the solution prepared in the step 1 is reacted and cooled to room temperature, adding methanol dissolved with nonyl phenol into the reaction kettle;
and 3, adding deionized water into the solution prepared in the step 2, heating to 40-50 ℃, and stirring for 1-2 hours to obtain the low-temperature crude oil demulsifier.
The invention has the advantages that the temperature of the demulsifier prepared by the invention is lower than that of the common industrial polyether demulsifier, and the demulsifier can be used at about 30 ℃; the demulsifier prepared by the invention has higher dehydration speed and higher dehydration efficiency, and solves the problem that the conventional demulsifier can not meet the low-temperature dehydration production requirement.
Detailed Description
The present invention will be described in detail below with reference to specific examples.
The invention provides a low-temperature crude oil demulsifier, which is prepared from the following raw materials in percentage by mass:
the total mass content is 100 percent.
The industrial polyether demulsifier comprises block polyether using alcohols as initiators, alkyl phenolic resin block polyether, amino modified phenolic resin block polyether and block polyether using amino as initiators.
Wherein, the block polyether using alcohol as initiator, the alcohol is octadecanol or propylene glycol; the alkyl phenolic resin blocks polyether, and alkylphenol used for synthesizing the initiator is nonyl phenol; amine modified phenolic resin blocks polyether, initiator is condensation product of alkyl phenol, vinylamine compound and formaldehyde; the amine group is used as initiator to block polyether, and the amine group is polyethylene or ethylenediamine.
The invention also provides a preparation method of the low-temperature demulsifier, which comprises the following steps:
step 1, adding a polyether demulsifier drying agent, sulfonic acid and diethanol amine into a reaction kettle with temperature control and stirring, controlling the temperature at 150 ℃, continuously stirring, and reacting for 3-5 hours;
step 2, after the solution prepared in the step 1 is reacted and cooled to room temperature, adding methanol dissolved with nonyl phenol into the reaction kettle;
and 3, adding deionized water into the solution obtained in the step 2, heating to 40-50 ℃, and continuously stirring for 1-2 hours to obtain the low-temperature crude oil demulsifier.
In the invention, all the selected raw materials are industrial products.
The invention provides six examples for preparing a low-temperature crude oil demulsifier, which comprises the following raw materials in percentage by mass as shown in the following table 1, and is prepared according to the preparation method of the low-temperature demulsifier provided by the invention.
TABLE 1
The industrial polyether demulsifier used in examples 1 to 2 is specifically an alkylphenol resin block polyether, and the alkylphenol used in the synthesis of the initiator is nonylphenol.
The industrial polyether demulsifier used in example 3 is specifically an amino-modified phenolic resin block polyether, and the initiator thereof is a condensation product of alkylphenol, vinylamine compound and formaldehyde.
The industrial polyether demulsifier used in example 4 is specifically a blocked polyether using an alcohol as an initiator, and the alcohol used is octadecanol.
The industrial polyether demulsifiers used in examples 5 to 6 were specifically blocked polyethers using amine groups as initiators, and the amine groups used were polyethylene and ethylenediamine, respectively.
Taking the low-temperature crude oil demulsifier prepared in example 4 as an example, the demulsifier evaluation is carried out according to the general technical conditions of crude oil demulsifier of SY/T5280-2018. Adopting a Xinjiang east oil field, Shanan united station to comprehensively obtain oil (containing 43.8 percent of water), and carrying out the following comparative experiment, wherein the code of the comparative object is JI-A1; the JI-A1 comprises 40% industrial polyether demulsifier, 27% methanol and 33% water by weight.
First set of comparative experiments:
TABLE 2 comparative data of dehydration rates at different temperatures
As can be seen from the data in Table 2, the dehydration rates of the two are equivalent when the dehydration temperature is 50 ℃ at the same chemical dosage; when the temperature is as low as 30 ℃, the dehydration rate of the low-temperature crude oil demulsifier is much higher, and the low-temperature crude oil demulsifier can meet the dehydration requirement of low-temperature crude oil.
Second set of comparative experiments:
TABLE 3 comparative data of dewatering amount for different settling times
As can be seen from the data in Table 3, the low-temperature crude oil demulsifier of the invention has much higher dehydration speed at 30 ℃ and is beneficial to the full dehydration of crude oil at the same temperature and the same dosage.
Third set of comparative experiments:
TABLE 4 comparison of the effluent quality
As can be seen from the data in Table 4, at the same temperature and the same dosage, when the dehydration temperature is 30 ℃, after 2 hours, the water quality dehydrated by the low-temperature crude oil demulsifier of the invention is clear and has no impurities, which indicates that the crude oil is dehydrated thoroughly and has the function of purifying water.
Compared with the single polyether demulsifier, the demulsifier of the invention selects the sulfonic acid to ensure that the demulsifier can rapidly penetrate through the external phase of the emulsion to be dispersed on an oil-water interface to replace or neutralize the emulsifier, reduce the interfacial tension and the interfacial film strength of emulsified water drops, and the interfacial film is easy to crack under the action of external force, thereby separating oil from water. The purpose of selecting diethanolamine is to improve the quality of the dehydrated water and has the function of purifying water. The purpose of the nonylphenol selection is to facilitate the reduction of crude oil viscosity and thus increase crude oil dehydration.
In conclusion, compared with the common industrial polyether demulsifier, the low-temperature crude oil demulsifier disclosed by the invention has the advantages of lower dehydration temperature, higher dehydration speed and water purification effect.
Claims (3)
1. The low-temperature crude oil demulsifier is characterized by being prepared from the following raw materials in percentage by mass:
the total content of the raw materials is 100 percent.
2. The low temperature crude oil demulsifier of claim 1, wherein the industrial polyether demulsifier dry agent is: blocked polyether using alcohol as initiator, alkyl phenolic resin blocked polyether, amino modified phenolic resin blocked polyether or blocked polyether using amino as initiator.
3. The method for preparing the low-temperature demulsifier according to claim 1 or 2, comprising the following steps:
step 1, adding an industrial polyether demulsifier dry agent, sulfonic acid and diethanol amine into a reaction kettle with temperature control and stirring, controlling the temperature at 150 ℃, continuously stirring, and reacting for 3-5 hours;
step 2, after the solution prepared in the step 1 is reacted and cooled to room temperature, adding methanol dissolved with nonyl phenol into the reaction kettle;
and 3, adding deionized water into the solution prepared in the step 2, heating to 40-50 ℃, and stirring for 1-2 hours to obtain the low-temperature crude oil demulsifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011621674.5A CN112812819A (en) | 2020-12-30 | 2020-12-30 | Low-temperature crude oil demulsifier and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011621674.5A CN112812819A (en) | 2020-12-30 | 2020-12-30 | Low-temperature crude oil demulsifier and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112812819A true CN112812819A (en) | 2021-05-18 |
Family
ID=75856054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011621674.5A Pending CN112812819A (en) | 2020-12-30 | 2020-12-30 | Low-temperature crude oil demulsifier and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112812819A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1537924A (en) * | 2003-10-22 | 2004-10-20 | 山东大学 | Low-temperature quick deemulsifying agent for water-containing wax-containing erude oil and its preparation method |
| CN101029252A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
| CN109652116A (en) * | 2018-10-18 | 2019-04-19 | 东营施普瑞石油工程技术有限公司 | Crude oil Produced Liquid low temperature dewatering demulsifier and preparation method thereof |
| CN111088065A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Crude oil demulsifier and preparation method thereof |
| CN111088064A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Crude oil demulsifier and preparation method thereof |
-
2020
- 2020-12-30 CN CN202011621674.5A patent/CN112812819A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1537924A (en) * | 2003-10-22 | 2004-10-20 | 山东大学 | Low-temperature quick deemulsifying agent for water-containing wax-containing erude oil and its preparation method |
| CN101029252A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
| CN109652116A (en) * | 2018-10-18 | 2019-04-19 | 东营施普瑞石油工程技术有限公司 | Crude oil Produced Liquid low temperature dewatering demulsifier and preparation method thereof |
| CN111088065A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Crude oil demulsifier and preparation method thereof |
| CN111088064A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Crude oil demulsifier and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107445808B (en) | Process and system for preparing poly-methoxy-dimethyl ether | |
| CN105131299A (en) | Preparation method for long-chain-alkyl modified phenyl hydrogen-containing silicone oil | |
| CN107973506B (en) | Demulsifier for conditioning and three-phase separation of oily sludge and preparation method thereof | |
| CN104946298A (en) | Crude oil demulsifier and production technology thereof | |
| CN101575533A (en) | Improved method for preparing fuel oil by coal tar hydrogenation | |
| CN103484159B (en) | Matching technology method for optimizing feeding of coal tar suspended bed hydrocracker | |
| CN101328429A (en) | Demulsifying agent for dehydration of high-sulphur heavy crude | |
| CN108559545B (en) | Residual oil hydrofining process for stopping and starting fractionating tower system and changing cold low fraction oil going direction | |
| CN101575537B (en) | Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature | |
| CN112812819A (en) | Low-temperature crude oil demulsifier and preparation method thereof | |
| CN214088414U (en) | Wax oil hydrocracking unit | |
| CN103804114A (en) | Method for preparing hydrogenated terphenyl | |
| CN102924705A (en) | Preparation method of dimethylallyl polyether | |
| CN203559012U (en) | Coal tar treatment system | |
| CN101200522A (en) | Polyester oil and method for preparing the same | |
| CN110665543A (en) | Metal-clay composite catalyst for high-temperature viscosity reduction of thick oil and preparation method thereof | |
| CN101671573A (en) | Production formula of DSP-1 crude oil demulsifier | |
| CN100480360C (en) | Fluorine- contained linkage polyether demulsification agent and preparing method thereof | |
| CN216629750U (en) | System for separate pentaerythritol and calcium formate from pentaerythritol mother liquor | |
| CN105132009A (en) | High pour point and high-viscosity crude oil demulsifier and preparation method therefor | |
| CN106518620A (en) | Method and device for preparing sec butanol | |
| CN110776398B (en) | Benzyl alcohol step pressurizing hydrolysis reaction process and system | |
| CN114957582A (en) | Polymeric carbodiimide hydrolysis-resistant agent with antioxidant function and preparation method thereof | |
| CN117185593A (en) | Method for stripping treatment of oily sludge based on supercritical carbon dioxide | |
| CN1133486C (en) | Lignin sulfonate surfactant for oil field, its preparation process and use in tertiary oil recovery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room 709, block B, pioneer Plaza, Keji Road, Zhangba Street office, high tech Zone, Xi'an City, Shaanxi Province, 710000 Applicant after: Xi'an Geely electronic new material Co.,Ltd. Address before: Room 709, block B, pioneer Plaza, Keji Road, Zhangba Street office, high tech Zone, Xi'an City, Shaanxi Province, 710000 Applicant before: XI'AN JI-LI ELECTRONIC & CHEMICAL ENGINEERING CO.,LTD. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210518 |
|
| RJ01 | Rejection of invention patent application after publication |