Summary of the invention
The problem that the present invention solves is to provide a kind of comb type polysiloxane crude oil demulsifier and preparation method thereof, has a consumption few, and minute water is fast, and the breakdown of emulsion temperature is low, advantage applied widely.
The present invention is achieved through the following technical solutions:
A kind of comb type polysiloxane crude oil demulsifier, its structural formula is as follows:
In formula: R
1Be propylene-glycol-based, octadecanol base, tetramethylolmethane base, quadrol base, alkyl phenolic resin base, polyethylene polyamine base, phenol amine aldehyde radical;
R2 is methyl methacrylate base, styryl, butyl acrylate base, Isooctyl acrylate monomer base;
Wherein, n=1~50; X=1~20; Y=1~50; Z=1~30; A=20~50; B=30~60.
A kind of preparation method who combs type polysiloxane crude oil demulsifier comprises the following steps:
1) in molfraction, add the containing hydrogen silicone oil of S part in reaction solvent, and to add catalyzer Platinic chloride to concentration be 60~120ppm, the reactant that then adds T part carries out hydrosilation reaction at 80~120 ℃, and the reaction times is 6~10h;
Described reactant is according to vinylformic acid polyoxyethylene polyoxypropylene ester: the mixture that the mol ratio of methacrylic acid: methacrylic ester=x: y: z is mixed the three, x=1~20, y=1~50, z=1~30; S: T=1: 1~1.2;
2) after hydrosilation reaction is completed, reaction product with extracting dissolution with solvents, is regulated pH to neutral, shake up rear standing demix, collect the layer that comprises reaction product, remove and extract solvent, obtain comb type polysiloxane crude oil demulsifier.
Described reaction solvent is Virahol, and the extraction solvent is methylene dichloride.
In massfraction, the hydrogen content of described containing hydrogen silicone oil is 0.1~0.25%.
Described vinylformic acid polyoxyethylene polyoxypropylene ester is vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester, vinylformic acid octadecanol polyoxyethylene polyoxypropylene ester, vinylformic acid pentaerythritol polyoxyethylene polyoxypropylene ester, vinylformic acid polyethylene polyamine polyoxyethylene polyoxypropylene ester, vinylformic acid ethylenediamine polyoxyethylene polyoxypropylene ester, acrylic acid alkyl resol polyoxyethylene polyoxypropylene ester or vinylformic acid phenol amine aldehyde resin polyoxyethylene polyoxypropylene ester.
Being prepared as of described vinylformic acid polyoxyethylene polyoxypropylene ester:
A kind of and vinylformic acid in propylene glycol polyoxyethylene poly-oxygen propylene aether, alkyl phenolic resin polyoxyethylene poly-oxygen propylene aether, polyethylene polyamine polyoxyethylene poly-oxygen propylene aether, ethylenediamine polyoxyethylene polyethenoxy ether, octadecanol polyoxyethylene polyoxypropylene, pentaerythritol polyoxyethylene poly-oxygen propylene aether, phenol amine aldehyde resin polyoxyethylene poly-oxygen propylene aether was mixed in 1: 1.2 in molar ratio, add again the toluenesulphonic acids of quality 2~6% after mixing and 0.6~1.2% Resorcinol, react 6h~8h under 120~145 ℃;
After question response is completed, reaction product is dissolved with methylene dichloride, regulate pH value to neutral with NaOH solution, shake up rear standing demix, tell subnatant, remove methylene dichloride, obtain vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester.
Described acrylate is methyl methacrylate, methyl acrylate, butyl acrylate, Isooctyl acrylate monomer or is vinylbenzene.
Described add containing hydrogen silicone oil and Platinic chloride in reaction solvent after, be heated to 80~120 ℃, in 1~2h, reactant is dripped, then continue reaction 4~8h at 80~120 ℃.
After described hydrosilation reaction is completed, reaction product is dissolved with methylene dichloride, then use NaHCO
3Solution is regulated pH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride, obtains comb type polysiloxane crude oil demulsifier.
Compared with prior art, the present invention has following useful technique effect:
Comb type polysiloxane crude oil demulsifier provided by the invention, it is the modification to silicone oil, pass through hydrosilation reaction, connect respectively vinylformic acid polyoxyethylene polyoxypropylene ester, methacrylic acid, acrylate on the linear polysiloxanes of silicone oil, and can according to the different requirements of different crude oils composition, by dehydration test, three's ratio be adjusted.
Further, for the requirement of different crude oils breakdown of emulsion, can adopt different types of vinylformic acid polyoxyethylene polyoxypropylene ester, acrylate and silicone oil to react.
Comb type polysiloxane crude oil demulsifier provided by the invention, can not only reduce oil water interfacial tension and boundary strength, and have good hydrophilic, an oleophylic ability, make product be applicable to oil-in-water-type crude oil emulsion and water-in-oil-type crude oil emulsion, has consumption few, the advantages such as minute water is fast, and the breakdown of emulsion temperature is low, and is applied widely.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment and result of use, and the explanation of the invention is not limited.
Comb type polysiloxane crude oil demulsifier provided by the invention, it is the modification to silicone oil, by hydrosilation reaction, connect respectively vinylformic acid polyoxyethylene polyoxypropylene ester, methacrylic acid, acrylate on the linear polysiloxanes of silicone oil, its structural formula is as follows:
In formula: R
1Be propylene-glycol-based, octadecanol base, tetramethylolmethane base, quadrol base, alkyl phenolic resin base, polyethylene polyamine base, phenol amine aldehyde radical;
R
2Be methyl methacrylate base, styryl, butyl acrylate base, Isooctyl acrylate monomer base;
Wherein, n=1~50; X=1~20; Y=1~50; Z=1~30; A=20~50; B=30~60.
Embodiment 1
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester
Take propylene glycol polyoxyethylene poly-oxygen propylene aether (molecular weight 2000) 20.00g, vinylformic acid 1.73g, catalyzer tosic acid 0.43g, hydroquinone of polymerization retarder 0.13g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 140 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 14.12g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 110 ℃;
After claiming that prepared vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester 12.98g, methacrylic acid 1.06g, methyl methacrylate 1.25g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 110 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 110 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted methyl methacrylate with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier A.
Embodiment 2
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester, identical with embodiment 1
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 14.12g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 110 ℃;
After claiming that prepared vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester 12.98g, methacrylic acid 0.53g, methyl methacrylate 1.85g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 110 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 110 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted methyl methacrylate with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier B.
Embodiment 3
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester, identical with embodiment 1
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 14.12g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 110 ℃;
After claiming that prepared vinylformic acid propylene glycol polyoxyethylene polyoxypropylene ester 15.58g, methacrylic acid 1.70g, methyl methacrylate 0.25g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 110 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 110 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted methyl methacrylate with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier C.
Emulsion splitter for above-mentioned preparation, long celebrating Baota District crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is formed by long celebrating Baota District dewatered oil and sewage configuration), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have good dehydrating effect, and concrete outcome is as shown in table 1.
Table 1 comb type polysiloxane crude oil demulsifier is to long celebrating Baota District crude oil different time dehydration rate
Embodiment 4
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid polyethylene polyamine polyoxyethylene polyoxypropylene ester
Take polyethylene polyamine polyoxyethylene poly-oxygen propylene aether (molecular weight 3000) 30.00g, vinylformic acid 0.87g, catalyzer tosic acid 0.61g, hydroquinone of polymerization retarder 0.19g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 145 ℃, back flow reaction 8h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid polyethylene polyamine polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 30.00g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 115 ℃;
After claiming that prepared vinylformic acid polyethylene polyamine polyoxyethylene polyoxypropylene ester 37.66g, methacrylic acid 1.06g, butyl acrylate 1.58g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 115 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 115 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted butyl acrylate with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier D.
Emulsion splitter for above-mentioned preparation, long Qingan County plug district crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is formed by long Qingan County's plug district dewatered oil and sewage configuration), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and concrete outcome is as shown in table 2.
Table 2 comb type polysiloxane crude oil demulsifier is to long Qingan County plug district crude oil different time dehydration rate
Emulsion splitter HQ96-1: clear industrial and trading company converges in Shaanxi; DB-2000 crude oil demulsifier, Shaanxi be nation's industry and trade company limited all
Embodiment 5
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of acrylic acid alkyl resol polyoxyethylene polyoxypropylene ester
Take alkyl phenolic resin polyoxyethylene poly-oxygen propylene aether (molecular weight 1500) 20.00g, vinylformic acid 1.12g, catalyzer tosic acid 0.43g, hydroquinone of polymerization retarder 0.13g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 135 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product acrylic acid alkyl resol polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 21.25g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 120 ℃;
After claiming that prepared acrylic acid alkyl resol polyoxyethylene polyoxypropylene ester 19.17g, methacrylic acid 1.06g, Isooctyl acrylate monomer 2.27g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 120 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 120 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted Isooctyl acrylate monomer with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier E.
Emulsion splitter for above-mentioned preparation, long Qing Zichang district crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is configured by long Qing Zichang district's dewatered oil and sewage and forms), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and concrete outcome is as shown in table 3.
Table 3 comb type polysiloxane crude oil demulsifier is to long Qing Zichang district crude oil different time dehydration rate
Emulsion splitter HQ96-1: clear industrial and trading company converges in Shaanxi; DB-2000 crude oil demulsifier, Shaanxi be nation's industry and trade company limited all
Embodiment 6
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid octadecanol polyoxyethylene polyoxypropylene ester
Take vinylformic acid octadecanol polyoxyethylene poly-oxygen propylene aether (molecular weight 2500) 20.00g, vinylformic acid 0.70g, catalyzer tosic acid 0.41g, hydroquinone of polymerization retarder 0.13g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 130 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid octadecanol polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 27.0g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 110 ℃;
After claiming that prepared vinylformic acid octadecanol polyoxyethylene polyoxypropylene ester 31.50g, methacrylic acid 1.06g, vinylbenzene 1.29g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 110 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 110 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted vinylbenzene with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier F.
Emulsion splitter for above-mentioned preparation, long Qing Zichang district crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is configured by long Qing Zichang district's dewatered oil and sewage and forms), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and dehydration rate reaches 91.7%
Embodiment 7
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid pentaerythritol polyoxyethylene polyoxypropylene ester
Take vinylformic acid pentaerythritol polyoxyethylene poly-oxygen propylene aether (molecular weight 2200) 20.00g, vinylformic acid 0.79g, catalyzer tosic acid 0.41g, hydroquinone of polymerization retarder 0.14g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 135 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid pentaerythritol polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 27.0g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 115 ℃;
After claiming that prepared vinylformic acid pentaerythritol polyoxyethylene polyoxypropylene ester 27.80g, methacrylic acid 1.06g, vinylbenzene 1.29g mix, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 120 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 115 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted vinylbenzene with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier F.
Emulsion splitter for above-mentioned preparation, long Qing Zichang district crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is configured by long Qing Zichang district's dewatered oil and sewage and forms), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and dehydration rate reaches 92.8%
Embodiment 8
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid ethylenediamine polyoxyethylene polyoxypropylene ester
Take vinylformic acid ethylenediamine polyoxyethylene polyoxypropylene ester ether (molecular weight 1800) 20.00g, vinylformic acid 0.96g, catalyzer tosic acid 0.42g, hydroquinone of polymerization retarder 0.14g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 135 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid ethylenediamine polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 27.0g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 120 ℃;
Claim prepared vinylformic acid ethylenediamine polyoxyethylene polyoxypropylene ester 22.87g, methacrylic acid 1.06g, Isooctyl acrylate monomer 2.27g, after mixing, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 120 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 120 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted Isooctyl acrylate monomer with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier G.
Emulsion splitter for above-mentioned preparation, long Qingan County plug district crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is formed by long Qing Zichang district's dewatered oil and sewage configuration), specifically compare with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and dehydration rate reaches 89.6%
Embodiment 9
The preparation method of comb type polysiloxane crude oil demulsifier comprises the following steps:
1) preparation of vinylformic acid phenol amine aldehyde resin polyoxyethylene polyoxypropylene ester
Take vinylformic acid phenol amine aldehyde resin polyoxyethylene poly-oxygen propylene aether (molecular weight 2900) 20.00g, vinylformic acid 0.60g, catalyzer tosic acid 0.42g, hydroquinone of polymerization retarder 0.12g, add in the there-necked flask that agitator, water trap, spherical condensation tube, thermometer are housed, be heated to 135 ℃, back flow reaction 6h;
After reaction is completed, reactant is poured in pear shape separatory funnel, add methylene dichloride 50ml that it is dissolved fully, then regulate pH to neutral with the NaOH solution of 0.05mol/L, shake up rear standing demix, tell subnatant, steam methylene dichloride with Rotary Evaporators and namely get product vinylformic acid phenol amine aldehyde resin polyoxyethylene polyoxypropylene ester;
2) hydrosilation reaction
Take containing hydrogen silicone oil (hydrogen content 0.185%) 20g, Virahol 27.0g, Platinic chloride 60ppm add in the four-hole boiling flask that dropping funnel, spherical condensation tube, thermometer, agitator are housed, and are heated to 120 ℃;
Claim prepared vinylformic acid phenol amine aldehyde resin polyoxyethylene polyoxypropylene ester 36.43g, methacrylic acid 1.06g, methyl methacrylate 1.25g, after mixing, the slow dropping of containing hydrogen silicone oil system that joins above-mentioned 115 ℃ was reacted in two hours, dripped and continued reaction 4h under rear 115 ℃;
3) separation of comb type polysiloxane crude oil demulsifier
After hydrosilation reaction is completed, reaction product is poured in separating funnel dissolved with the 50ml methylene dichloride, then use the NaHCO of 0.05mol/L
3Solution is regulated PH to neutral, shakes up rear standing demix, tells subnatant, steams methylene dichloride and unreacted methyl methacrylate with Rotary Evaporators, namely gets comb type polysiloxane crude oil demulsifier H.
Emulsion splitter for above-mentioned preparation, long celebrating Baota District crude oil is carried out breakdown of emulsion experiment (crude oil emulsion is formed by long Qing Zichang district's dewatered oil and sewage configuration), specifically with reference to oil and gas industry standard SY/T 5821-2000, the breakdown of emulsion result shows to have outstanding dehydrating effect, and dehydration rate reaches 94.5%
By embodiment as can be known, comb type polysiloxane crude oil demulsifier has the advantages such as the breakdown of emulsion ability is strong, minute water speed is fast, the breakdown of emulsion temperature is low, applied widely, is a kind of novel crude oil demulsifier.