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Ternary polymer composite petroleum pour depressant and preparation method thereof

A ternary polymer and pour point depressant technology, applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of freezing point viscosity, high yield value, crude oil decline, high energy consumption, etc., to improve low temperature rheology , reduce the energy consumption of pipeline transportation, and widen the effect of cutting width

Inactive Publication Date: 2009-03-11
NANJING UNIV OF 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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  • Ternary polymer composite petroleum pour depressant and preparation method thereof
  • Ternary polymer composite petroleum pour depressant and preparation method thereof
  • Ternary polymer composite petroleum pour depressant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] 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 17.41g (0.045mol) 2-methacrylic acid mixed ester (by 2-methacrylic acid and C 20 ~C 24 Mixed alcohol is made, wherein the ratio of alcohol is eicosanol 70%, behenyl alcohol 20%, tetracosyl alcohol 10%), 0.43g (0.005mol) vinyl acetate, 0.37g benzoyl peroxide, temperature After automatically rising to 100°C, the external temperature is removed, and when the temperature drops to 60-85°C, it is reacted at a constant temperature for 1 hour to obtain a 2-methacrylic acid derivative polymer, that is, a 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. Weight average molecular weight It is 23152g / mol. 2-methacry...

Embodiment 2

[0028] 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 13.49g (0.035mol) 2-methacrylic acid mixed ester (the proportion of alcohol is eicosanol 80%, behenyl alcohol 10%, tetracosyl alcohol 10%), 0.43g (0.005mol) vinyl acetate , 0.29g benzoyl peroxide, the temperature automatically rises to 100°C and then the external temperature is removed, and when the temperature drops to 60-85°C, the reaction is constant for 2 hours. Add 7.1 g of Span-83 and stir for half an hour to obtain a light yellow viscous liquid crude oil pour point depressant composition. Weight average molecular weight It is 46989g / mol. 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; 1782.32cm -1 It is the stretching vibration absor...

Embodiment 3

[0030] 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 (wherein the ratio of alcohol is eicosanol 60%, behenyl alcohol 30%, tetracosyl alcohol 10%), 0.43g (0.005mol) vinyl acetate , 0.37g benzoyl peroxide, the temperature automatically rises to 100°C and then the external temperature is removed, and when the temperature drops to 60-85°C, the temperature is reacted for 1h. 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. Weight average molecular weight It is 29868g / mol. 2-methacrylic acid derivative polymer infrared data: 1732.23cm -1 It is the stretching vibration absorption peak of the -C=O group in the ester group; 1783.78cm -1 It is the stretching vibration absor...

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Abstract

The invention discloses a terpolymer composite petroleum pour point depressant and a method for preparing the same, wherein the pour point depressant is formed by the random copolymerization of maleic anhydride monomer, 2-methacrylate and carboxylic acid ethylene ester, and the weight average molecular weight is between 10, 000 and 90, 000g / mol. The invention also discloses a terpolymer composite petroleum pour point depressant composite which consists of the following components in weight percentage: 55 t0 92 percent of the terpolymer composite petroleum pour point depressant and 8 to 45 percent of surfactant. The pour point depressant and the pour point depressant composite have the advantages of obviously improving the low-temperature rheological property of crude oil, improving the quality and efficiency of operations such as crude oil exploitation, collection-transfer, storage and the like, widening the cutting width of fraction during the crude oil refining and lowering the energy consumption of pipe transportation.

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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IPC IPC(8): C10L1/197C10L10/16C08F220/18
Inventor 关建宁姚成张金俊宋娜万嵘王兰芳孔祥君苏桂明
Owner NANJING UNIV OF TECH
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