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Clean diesel pour point depressant and preparation method thereof

A diesel pour point depressant, clean technology, applied in the formulation and preparation of clean diesel pour point depressant, can solve the problems of insignificant pour point depressant effect, low product synthesis yield, high cost of raw materials, etc., and achieve the goal of formulating components The effect of less, convenient synthesis operation, and reduced production cost

Inactive Publication Date: 2017-07-14
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has defects such as low product synthesis yield, insignificant pour point depressing effect, large environmental pollution caused by synthetic raw materials and synthetic process, and high cost of raw materials.

Method used

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  • Clean diesel pour point depressant and preparation method thereof
  • Clean diesel pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The clean diesel pour point depressant comprises, by mass percentage, 66.0% oleic acid, 23.0% glycerin and 11.0% methacrylic acid.

[0025] The preparation method of the above-mentioned clean diesel pour point depressant: take 66.0% by mass of oleic acid according to the formula ratio of the diesel oil pour point depressant, add 23.0% by mass of glycerol, heat and stir until it dissolves, and control the temperature to 160°C, when the temperature rises to 80°C, a small amount of water mist begins to appear in the bottle wall. At this time, take a sample with a rubber dropper, drop the sample into the Erlenmeyer flask, dissolve the sample with absolute ethanol, and add 2 to 4 drops Phenolphthalein reagent, titrated with 0.1mol / L sodium hydroxide solution. The acid-alcohol esterification rate was determined according to the acid-base titration method. Thereafter, samples were taken every 30 minutes to determine the esterification rate. Esterification reaction time is 6h...

Embodiment 2

[0027] The clean diesel pour point depressant comprises, by mass percentage, 66.0% oleic acid, 23.0% glycerin and 11.0% methacrylic acid.

[0028] The preparation method of the above-mentioned clean diesel pour point depressant: take 66.0% by mass of oleic acid according to the formula ratio of the diesel oil pour point depressant, add 23.0% by mass of glycerol, heat and stir until it dissolves, and control the temperature to 160°C, when the temperature rises to 80°C, a small amount of water mist begins to appear in the bottle wall. At this time, take a sample with a rubber dropper, drop the sample into the Erlenmeyer flask, dissolve the sample with absolute ethanol, and add 2 to 4 drops Phenolphthalein reagent, titrated with 0.1mol / L sodium hydroxide solution. The acid-alcohol esterification rate was determined according to the acid-base titration method. Thereafter, samples were taken every 30 minutes to determine the esterification rate. Esterification reaction time is 5h...

Embodiment 3

[0030] The clean diesel pour point depressant comprises, by mass percentage, 67.0% oleic acid, 22.0% glycerin and 11.0% methacrylic acid.

[0031] The preparation method of the above-mentioned clean diesel pour point depressant: take 67.0% by mass of oleic acid according to the formula ratio of diesel oil pour point depressant, add 22.0% by mass of glycerin, heat and stir until it dissolves, and the temperature control is 160°C, when the temperature rises to 80°C, a small amount of water mist begins to appear in the bottle wall. At this time, take a sample with a rubber dropper, drop the sample into the Erlenmeyer flask, dissolve the sample with absolute ethanol, and add 2 to 4 drops Phenolphthalein reagent, titrated with 0.1mol / L sodium hydroxide solution. The acid-alcohol esterification rate was determined according to the acid-base titration method. Thereafter, samples were taken every 30 minutes to determine the esterification rate. Esterification reaction time is 6h. T...

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Abstract

The invention relates to a clean diesel pour point depressant and a preparation method thereof. The clean diesel pour point depressant is composed of long carbon chain fatty acid, low-carbon alcohol and low-carbon acid. The preparation method comprises the following concrete steps: weighing oleic acid by weight; adding glycerol, and carrying out heating under stirring until the oleic acid and the glycerol are dissolved; measuring the rate of esterification through an acid-base titration method; after a period of time, adding methacrylic acid, carrying out caustic washing and alcohol washing, then removing water through a rotary evaporator, and carrying out drying in an oven so as to obtain a target product namely methacrylic acid-glyceryl monooleate. According to the invention, by adopting an additive-free solvent and a catalyst, materials are economical, and cleanness and environment protection are realized. The pour point depressant provided by the invention has a formula applicable to good improvement of fluidity of diesel at a low temperature, and specifically meets the requirements of a diesel engine for clean and environment-friendly combustion tail gas emission in the process of diesel combustion.

Description

technical field [0001] The invention belongs to the field of novel additives in petrochemical industry, and in particular relates to a formula composition of a clean diesel pour point depressant and a preparation method thereof. Background technique [0002] Diesel pour point depressant can effectively improve the fluidity of diesel oil at low temperature, so diesel pour point depressant plays an important role in oil additives. The quality of diesel pour point depressant directly affects whether diesel can flow freely at low temperature, or whether diesel can burn completely in the engine without producing toxic exhaust. Clean diesel pour point depressant is a kind of highly efficient diesel pour point depressant with low pollution. It is a binary copolymer system with acid alcohol as raw material. [0003] Most of the currently used diesel pour point depressants are ethylene-vinyl acetate polymers (EVA), poly(meth)acrylate polymers, maleic anhydride copolymers, and alkyla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/182C10L1/188C07C67/347C07C69/593
CPCC10L1/14C07C67/08C07C67/347C10L1/1824C10L1/1881C10L2200/0446C10L2300/20C07C69/58C07C69/593
Inventor 李丽华张金生王晶吴限
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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