Ternary polymer composite petroleum pour-point depressant and preparation method thereof

A ternary polymer and pour point depressant technology, applied in the petroleum industry, drilling compositions, chemical instruments and methods, etc., can solve the problems of freezing point viscosity, high yield value, crude oil drop, high energy consumption, etc., and achieve improvement Effects of low temperature rheology, saving transportation costs, and widening the cutting width

Inactive Publication Date: 2015-06-10
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of crude oil is declining, manifested in high aromatic content, high sulfur content, heavier oil, higher freezing point (or pour point), higher viscosity, and higher yield value, which brings many difficulties to the pipeline transportation of waxy crude oil
Usually, this kind of crude oil is transported by traditional station-by-station heating to maintain its good fluidity and achieve the purpose of safe operation. % or more, so how to transport oil safely and efficiently has become a worldwide problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 0.5g (0.005mol) of maleic anhydride and 10g of toluene in a reactor equipped with an electric stirrer, a thermometer, and a reflux condenser, heat up to 40-70°C and stir for 30 minutes, heat up to 50-90°C, and add 17.41g (0.045mol) 2-methacrylic acid mixed ester (prepared from 2-methacrylic acid and C20~C24 mixed alcohol, wherein the proportion of alcohol is 70% eicosanol, 20% behenyl alcohol, 20% ethanol Tetrol 10%), 0.43g (0.005mol) vinyl ester, 0.37g benzoyl peroxide, remove the external temperature after the temperature rises to 100°C automatically, when the temperature drops to 60~-85°C, the constant temperature reaction is 1h, The 2-methacrylic acid derivative polymer is obtained, that is, the ternary polymer composite petroleum pour point depressant. Add 7.3g of Span-85 and stir for half an hour to obtain a light yellow viscous liquid crude oil pour point depressant composition. The weight average molecular weight is 23152g1mol. 2-methacrylic acid derivativ...

Embodiment 2

[0024] Put 0.5g (0.005mol maleic anhydride and 10g toluene in a reactor equipped with an electric stirrer, a thermometer and a reflux condenser, raise the temperature to 40-70°C and stir for 30min, then raise the temperature to 50-90°C, and add 13.49g (0.035mol 2-methacrylic acid mixed ester (the proportion of alcohol is 80% eicosanol, 10% behenyl alcohol, 10% tetracosyl alcohol), 0.43g0.005mol vinyl ester, 0.29g peroxide Benzoides, the temperature automatically rises to 100°C and then the external temperature is removed. When the temperature drops to 60-85°C, the reaction is constant for 2 hours. Add 7.1g of Span-83 and stir for half an hour to obtain light yellow viscous liquid crude oil depreciation

[0025] agent composition. The weight average molecular weight is 46989g1mol. 2-methacrylic acid derivative polymer infrared data 1729.56cm - 1 It is the stretching vibration absorption peak of the -c=o group in the ester group at 1782.32cm -1 It is the stretching vibration...

Embodiment 3

[0027] Put 0.5g (0.005mol) of maleic anhydride and 10g of toluene in a reactor equipped with an electric stirrer, a thermometer, and a reflux condenser, heat up to 40-70°C and stir for 30 minutes, then heat up to 50-90°C, and then add 17.47g (0.045mol) 2-methacrylic acid mixed ester (the proportion of alcohol is 60% eicosanol, 30% behenyl alcohol, 10% tetracosyl alcohol), 0.43g (0.005mol) vinyl ester Ester, 0.37g benzoyl peroxide, the temperature automatically rises to 100°C and the external temperature is removed, and when the temperature drops to 60-85°C, it is reacted at constant temperature for 1 hour. Add 7.27g of Span-80 and stir for half an hour to obtain a light yellow viscous liquid crude oil pour point depressant composition. The weight average molecular weight is 29868g1molo2-methacrylic acid derivative polymer infrared number 1732.23cm - 1 It is the stretching vibration absorption peak of the -c=o group in the ester group at 1783.78cm -1 It is the stretching vib...

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PUM

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Abstract

The invention discloses a ternary polymer composite petroleum pour-point depressant and a preparation method thereof. The ternary polymer composite petroleum pour-point depressant is prepared from monomer maleic anhydride, 2-methacrylate and vinyl carboxylate by random copolymerization and has weight average molecular weight of 10000-90000g/mol. The invention also discloses a biopolymer composite petroleum pour-point depressant composition comprising 55-92wt% of the ternary polymer composite petroleum pour-point depressant and 8-45wt% of a surfactant. The ternary polymer composite petroleum pour-point depressant and its composition can obviously improve crude oil low temperature rheological properties, improve quality and efficiency of crude oil exploitation, gathering and transportation, and storage, widens cutting width of a fraction in crude oil melting and reduces pipe transportation energy consumption.

Description

technical field [0001] The invention belongs to the field of petroleum transportation, and in particular relates to a ternary polymer composite petroleum pour point depressant, a preparation method and a ternary polymer composite petroleum pour point depressant composition. Background technique [0002] With the development of the international economy, the volume of crude oil extraction and transportation has been increasing, and the price of oil products has continued to rise. However, the quality of crude oil is declining, manifested in high aromatic content, high sulfur content, heavier oil, higher freezing point (or pour point), higher viscosity, and higher yield value, which brings many difficulties to the pipeline transportation of waxy crude oil. Usually, this kind of crude oil is transported by traditional station-by-station heating to maintain its good fluidity and achieve the purpose of safe operation. % or more, so how to transport oil safely and efficiently has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F222/06C08F218/04C09K8/524C10L10/14C10L1/196
Inventor 张森李珍妮许化强
Owner QINGDAO HUICHENG PETROCHEM TECH
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