CN105273177A - Emulsion breaker for polymer and surface active agent crude oil and preparation method thereof - Google Patents
Emulsion breaker for polymer and surface active agent crude oil and preparation method thereof Download PDFInfo
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Abstract
The invention provides emulsion breaker for a polymer and surface active agent crude oil. The emulsion breaker is prepared from the following components in parts by weight: 40 to 43.5 parts of ethylene oxide, 20 to 30 parts of ethylene oxide-propylene epoxide block co-polymer ether, 25 to 30 parts of alkylbenzene sulfonate, 2.5 to 3.0 parts of mutual solvent, 10 to 15 parts of glycol and 9 to 12 parts of water. The emulsion breaker has high surface activity, better hydrophilic and oleophylic performance and performance for processing the polymer-containing emulsified crude oil and can be used for treating the polymer-containing emulsified crude oil in a crude oil overflow settlement system.
Description
Technical field
The present invention relates to a kind of crude oil demulsifier, be specifically related to a kind of for emulsion splitter containing polymkeric substance and tensio-active agent crude oil and preparation method thereof.
Background technology
At present, crude oil integrate emulsion splitter in defeated process mainly with oxyethane, propylene oxide block copolymer as active principle, use gained after the organic solvent dilutings such as toluene, dimethylbenzene, methyl alcohol, the following shortcoming of ubiquity:
1, to containing polymkeric substance and tensio-active agent crude oil demulsification weak effect.Emulsion splitter used on oil field is most for the oil well produced crude oil emulsion not containing polymkeric substance and tensio-active agent, to the costs and poor dehydration results containing polymkeric substance and tensio-active agent crude oil.Along with the continuous enforcement improving recovery ratio measure, the polymkeric substance in crude oil and surfactant content rise, containing polymkeric substance and tensio-active agent dehydrating of crude oil difficulty.
2, sewage quality difference is deviate from.Emulsion splitter overwhelming majority process used on oil field is containing polymkeric substance and tensio-active agent crude oil weak effect, and the sewage quality deviate from is poor, and suspension content is high, and sewage with oil is high.
Above-mentioned factor causes conventional emulsion splitter cannot effectively process containing polymkeric substance and tensio-active agent crude oil to a certain extent.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide emulsion splitter for polymkeric substance and tensio-active agent crude oil of a kind of emulsified crude oil containing polymkeric substance and tensio-active agent processed in crude oil overflow sedimenting system and preparation method thereof.
In order to achieve the above object, the technical scheme that the present invention takes is: for the emulsion splitter of polymkeric substance and tensio-active agent crude oil, this emulsion splitter forms according to following parts by weight:
Oxyethane: 40 ~ 43.5 parts;
Epoxy ethane-epoxy propane block co-polyether: 20 ~ 30 parts;
Alkylbenzene sulfonate: 25 ~ 30 parts;
Mutual solvent: 2.5 ~ 3.0 parts;
Ethylene glycol: 10 ~ 15 parts;
Water: 9 ~ 12 parts.
Described epoxy ethane-epoxy propane block co-polyether obtains in accordance with the following methods:
Step one, the preparation of intermediate: add the catalyzer sodium ethylate of 0.2 ~ 0.5 weight part and the initiator five ethene hexamine of 0.5 ~ 0.8 weight part in stainless steel autoclave, vacuumize under 20 ~ 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 ~ 100.5 weight parts, and to control reaction pressure be 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate;
Step 2: the preparation of epoxy ethane-epoxy propane block co-polyether: add the intermediate that the catalyzer sodium ethylate of 0.3 ~ 0.5 weight part and 20 ~ 25 weight parts are obtained by step one in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 ~ 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization.
Described alkylbenzene sulfonate obtains in accordance with the following methods: the alkyl benzene sulphonate (ABS) adding 60 ~ 80 weight parts in glassed steel reaction vessels, the solvent ethylene glycol of 20 ~ 30 weight parts is added in whipping process, again 15 ~ 20 weight part organic amines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 ~ 30 DEG C.
Described organic amine is selected from the one in Monoethanolamine MEA BASF or trolamine.
Described mutual solvent is ethanol and butyl glycol ether mixture.
For a preparation method for the emulsion splitter of polymkeric substance and tensio-active agent crude oil, comprise the following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.2 ~ 0.5 weight part and the initiator five ethene hexamine of 0.5 ~ 0.8 weight part is added in stainless steel autoclave, vacuumize under 20 ~ 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 ~ 100.5 weight parts, and to control reaction pressure be 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate;
2) preparation of, oxidative ethane-propylene oxide block copolyether:
The intermediate that the catalyzer sodium ethylate of 0.3 ~ 0.5 weight part and 20 ~ 25 weight parts are obtained by step 1) is added in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 ~ 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization;
3), the preparation of alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 60 ~ 80 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 20 ~ 30 weight parts is added in whipping process, again 15 ~ 20 weight part organic amines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 ~ 30 DEG C; Described organic amine is selected from the one in Monoethanolamine MEA BASF or trolamine;
Step 4: the preparation containing polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 40 ~ 43.5 weight parts, the epoxy ethane-epoxy propane block co-polyether of 20 ~ 30 weight parts, the alkylbenzene sulfonate of 25 ~ 30 weight parts, the mutual solvent, the solvent ethylene glycol of 10 ~ 15 weight parts and the water of 9 ~ 12 weight parts that are mixed by ethanol and butyl glycol ether of 2.5 ~ 3.0 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 40 ~ 50 DEG C, logical water of condensation to temperature is 20 ~ 30 DEG C.
The present invention adopts above technical scheme, have the following advantages: emulsion splitter prepared by the application has stronger surfactivity, preferably hydrophilic and oleophilic performance and the process performance containing polymer emulsified crude oil, can be used for processing in crude oil overflow sedimenting system containing polymer emulsified crude oil.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
For the emulsion splitter of polymkeric substance and tensio-active agent crude oil, this emulsion splitter forms according to following parts by weight:
Oxyethane: 40 ~ 43.5 parts;
Epoxy ethane-epoxy propane block co-polyether: 20 ~ 30 parts;
Alkylbenzene sulfonate: 25 ~ 30 parts;
Mutual solvent: 2.5 ~ 3.0 parts;
Ethylene glycol: 10 ~ 15 parts;
Water: 9 ~ 12 parts.
For the preparation method of the emulsion splitter of polymkeric substance and tensio-active agent crude oil, comprise the following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.2 ~ 0.5 weight part and the initiator five ethene hexamine of 0.5 ~ 0.8 weight part is added in stainless steel autoclave, vacuumize under 20 ~ 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 ~ 100.5 weight parts, and to control reaction pressure be 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate;
2) preparation of, oxidative ethane-propylene oxide block copolyether:
The intermediate that the catalyzer sodium ethylate of 0.3 ~ 0.5 weight part and 20 ~ 25 weight parts are obtained by step 1) is added in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 ~ 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization;
3), the preparation of alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 60 ~ 80 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 20 ~ 30 weight parts is added in whipping process, again 15 ~ 20 weight part organic amines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 ~ 30 DEG C; Described organic amine is selected from the one in Monoethanolamine MEA BASF or trolamine;
Step 4: the preparation containing polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 40 ~ 43.5 weight parts, the epoxy ethane-epoxy propane block co-polyether of 20 ~ 30 weight parts, the alkylbenzene sulfonate of 25 ~ 30 weight parts, the mutual solvent, the solvent ethylene glycol of 10 ~ 15 weight parts and the water of 9 ~ 12 weight parts that are mixed by ethanol and butyl glycol ether of 2.5 ~ 3.0 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 40 ~ 50 DEG C, logical water of condensation to temperature is 20 ~ 30 DEG C.
This emulsion splitter, when the slurry tank ageing oil that Changqing oilfields contains polymkeric substance 5%-10% carries out field application test, obtains following result:
The emulsion splitter prepared in the present embodiment has stronger surfactivity, preferably hydrophilic and oleophilic performance and the process performance containing polymer emulsified crude oil, can be used for processing in crude oil overflow sedimenting system containing polymer emulsified crude oil.
Embodiment 2
The present embodiment specifically provides a kind of preparation method of the emulsion splitter for polymkeric substance and tensio-active agent crude oil, specifically carries out according to following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.2 weight part and the initiator five ethene hexamine of 0.5 weight part is added in stainless steel autoclave, vacuumize under 20 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 weight parts, and to control reaction pressure be 0.2MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate.
2), the preparation of epoxy ethane-epoxy propane block co-polyether:
The intermediate that the catalyzer sodium ethylate of 0.3 weight part and 20 weight parts are obtained by step 1) is added in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization.
3), the preparation of alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 60 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 20 weight parts is added in whipping process, again 15 weight part Monoethanolamine MEA BASFs are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 DEG C;
4), containing the preparation of polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 40 weight parts, the epoxy ethane-epoxy propane block co-polyether of 20 weight parts, the alkylbenzene sulfonate of 25 weight parts, the mutual solvent, the solvent ethylene glycol of 10 weight parts and the water of 9 weight parts that are mixed by ethanol and butyl glycol ether of 2.5 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 40 DEG C, logical water of condensation to temperature is 20 DEG C.
This emulsion splitter, when the slurry tank ageing oil that Changqing oilfields contains polymkeric substance 5%-10% carries out field application test, obtains following result:
Embodiment 3
The present embodiment specifically provides a kind of preparation method of the emulsion splitter for polymkeric substance and tensio-active agent crude oil, specifically carries out according to following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.3 weight part and the initiator five ethene hexamine of 0.6 weight part is added in stainless steel autoclave, vacuumize under 25 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 99.5 weight parts, and to control reaction pressure be 0.3MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate.
2), the preparation of epoxy ethane-epoxy propane block co-polyether:
The intermediate that the catalyzer sodium ethylate of 0.4 weight part and 22 weight parts are obtained by step 1) is added in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 80 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.3MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization.
3), the preparation of alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 70 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 25 weight parts is added in whipping process, again 17 weight part Monoethanolamine MEA BASFs are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 25 DEG C;
4), containing the preparation of polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 41.5 weight parts, the epoxy ethane-epoxy propane block co-polyether of 25 weight parts, the alkylbenzene sulfonate of 27 weight parts, the mutual solvent, the solvent ethylene glycol of 12 weight parts and the water of 10 weight parts that are mixed by ethanol and butyl glycol ether of 2.7 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 45 DEG C, logical water of condensation to temperature is 25 DEG C.
This emulsion splitter, when the slurry tank ageing oil that Changqing oilfields contains polymkeric substance 5%-10% carries out field application test, obtains following result:
Embodiment 4
The present embodiment specifically provides a kind of preparation method of the emulsion splitter for polymkeric substance and tensio-active agent crude oil, specifically carries out according to following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.5 weight part and the initiator five ethene hexamine of 0.8 weight part is added in stainless steel autoclave, vacuumize under 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 100.5 weight parts, and to control reaction pressure be 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate.
2), the preparation of epoxy ethane-epoxy propane block co-polyether:
The catalyzer sodium ethylate of 0.5 weight part and 25 weight parts are added by step 1 in stainless steel autoclave) obtained intermediate, to vacuumize with inflated with nitrogen each three times, pass into 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization.
3) preparation of/alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 80 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 30 weight parts is added in whipping process, again 20 weight part trolamines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 30 DEG C;
4), containing the preparation of polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 43.5 weight parts, the epoxy ethane-epoxy propane block co-polyether of 30 weight parts, the alkylbenzene sulfonate of 30 weight parts, the mutual solvent, the solvent ethylene glycol of 15 weight parts and the water of 12 weight parts that are mixed by ethanol and butyl glycol ether of 3.0 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 50 DEG C, logical water of condensation to temperature is 30 DEG C.
This emulsion splitter, when the slurry tank ageing oil that Changqing oilfields contains polymkeric substance 5%-10% carries out field application test, obtains following result:
In above-mentioned 1-4 embodiment, mutual solvent is ethanol and butyl glycol ether mixture.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (6)
1., for the emulsion splitter of polymkeric substance and tensio-active agent crude oil, it is characterized in that, this emulsion splitter forms according to following parts by weight:
Oxyethane: 40 ~ 43.5 parts;
Epoxy ethane-epoxy propane block co-polyether: 20 ~ 30 parts;
Alkylbenzene sulfonate: 25 ~ 30 parts;
Mutual solvent: 2.5 ~ 3.0 parts;
Ethylene glycol: 10 ~ 15 parts;
Water: 9 ~ 12 parts.
2. the emulsion splitter for polymkeric substance and tensio-active agent crude oil according to claim 1, it is characterized in that, described epoxy ethane-epoxy propane block co-polyether obtains in accordance with the following methods:
Step one, the preparation of intermediate: add the catalyzer sodium ethylate of 0.2 ~ 0.5 weight part and the initiator five ethene hexamine of 0.5 ~ 0.8 weight part in stainless steel autoclave, vacuumize under 20 ~ 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 ~ 100.5 weight parts, and to control reaction pressure be 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate;
Step 2: the preparation of epoxy ethane-epoxy propane block co-polyether: add the intermediate that the catalyzer sodium ethylate of 0.3 ~ 0.5 weight part and 20 ~ 25 weight parts are obtained by step one in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 ~ 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization.
3. the emulsion splitter for polymkeric substance and tensio-active agent crude oil according to claim 1, it is characterized in that, described alkylbenzene sulfonate obtains in accordance with the following methods: the alkyl benzene sulphonate (ABS) adding 60 ~ 80 weight parts in glassed steel reaction vessels, the solvent ethylene glycol of 20 ~ 30 weight parts is added in whipping process, again 15 ~ 20 weight part organic amines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 ~ 30 DEG C.
4. the emulsion splitter for polymkeric substance and tensio-active agent crude oil according to claim 2, it is characterized in that, described organic amine is selected from the one in Monoethanolamine MEA BASF or trolamine.
5. the emulsion splitter for polymkeric substance and tensio-active agent crude oil according to claim 1, it is characterized in that, described mutual solvent is ethanol and butyl glycol ether mixture.
6., for the preparation method of the emulsion splitter of polymkeric substance and tensio-active agent crude oil, it is characterized in that, comprise the following steps:
1), the preparation of intermediate:
The catalyzer sodium ethylate of 0.2 ~ 0.5 weight part and the initiator five ethene hexamine of 0.5 ~ 0.8 weight part is added in stainless steel autoclave, vacuumize under 20 ~ 30 DEG C of conditions with inflated with nitrogen each three times to replace the air in still, be warming up to 120 DEG C, pass into the propylene oxide of 98.5 ~ 100.5 weight parts, and to control reaction pressure be 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, obtained intermediate;
2) preparation of, oxidative ethane-propylene oxide block copolyether:
The intermediate that the catalyzer sodium ethylate of 0.3 ~ 0.5 weight part and 20 ~ 25 weight parts are obtained by step 1) is added in stainless steel autoclave, to vacuumize with inflated with nitrogen each three times, pass into 78.5 ~ 81.5 parts by weight epoxy ethane, controlling temperature of reaction is 120 DEG C, reaction pressure is 0.2 ~ 0.4MPa, be depressurized to till pressure no longer changes after 2 hours, discharging, the obtained epoxy ethane-epoxy propane block co-polyether of neutralization;
3), the preparation of alkylbenzene sulfonate:
The alkyl benzene sulphonate (ABS) of 60 ~ 80 weight parts is added in glassed steel reaction vessels, the solvent ethylene glycol of 20 ~ 30 weight parts is added in whipping process, again 15 ~ 20 weight part organic amines are added in reactor, logical water of condensation controls temperature of reaction at 60 DEG C, react 90 minutes, obtain uniform alkylbenzene sulfonate, logical water of condensation to temperature is 20 ~ 30 DEG C; Described organic amine is selected from the one in Monoethanolamine MEA BASF or trolamine;
Step 4: the preparation containing polymkeric substance and tensio-active agent crude oil demulsifier:
The oxyethane of 40 ~ 43.5 weight parts, the epoxy ethane-epoxy propane block co-polyether of 20 ~ 30 weight parts, the alkylbenzene sulfonate of 25 ~ 30 weight parts, the mutual solvent, the solvent ethylene glycol of 10 ~ 15 weight parts and the water of 9 ~ 12 weight parts that are mixed by ethanol and butyl glycol ether of 2.5 ~ 3.0 weight parts is added successively in glassed steel reaction vessels, react 120 minutes at temperature is 40 ~ 50 DEG C, logical water of condensation to temperature is 20 ~ 30 DEG C.
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| CN106335968A (en) * | 2016-10-19 | 2017-01-18 | 中国石油化工股份有限公司 | Demulsifier for sewage high in thickened oil content and preparation method |
| CN109294548A (en) * | 2018-11-29 | 2019-02-01 | 西安长庆化工集团有限公司 | A kind of ageing oil low-temperature demulsification thinner and its preparation method and application |
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| CN106335968B (en) * | 2016-10-19 | 2020-05-19 | 中国石油化工股份有限公司 | Demulsifier for high polymer-containing heavy oil sewage and preparation method thereof |
| CN109294548A (en) * | 2018-11-29 | 2019-02-01 | 西安长庆化工集团有限公司 | A kind of ageing oil low-temperature demulsification thinner and its preparation method and application |
| CN109294548B (en) * | 2018-11-29 | 2020-11-10 | 西安长庆化工集团有限公司 | Low-temperature demulsification viscosity reducer for aging oil and preparation method and application thereof |
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Application publication date: 20160127 |