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Clean type diesel oil 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: 2017-03-08
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 type diesel oil pour point depressant and preparation method thereof
  • Clean type diesel oil pour point depressant and preparation method thereof
  • Clean type diesel oil pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The clean diesel pour point depressant comprises, in terms of mass percentage, 27.0% maleic anhydride, 45.0% glycerol and 28.0% oleic acid.

[0021] The preparation method of the above-mentioned clean diesel pour point depressant: take 27.0% by mass of maleic anhydride according to the formula ratio of diesel oil pour point depressant, add 45.0% by mass of glycerin, when the temperature rises to 80°C , heated and stirred until maleic anhydride and glycerol are basically miscible. At this time, take a sample with a rubber dropper, place the sample in a conical flask, dissolve the sample with absolute ethanol, add a few drops of phenolphthalein reagent to it, and use The prepared 0.1mol / L sodium hydroxide solution is used for titration, and when the color changes in the Erlenmeyer flask and does not fade for 30 seconds, record the volume of the consumed sodium hydroxide solution, and calculate the acid value and esterification rate. Thereafter, samples were taken every 30...

Embodiment 2

[0023] The clean diesel pour point depressant comprises, in terms of mass percentage, 26.0% maleic anhydride, 45.0% glycerol and 29.0% oleic acid.

[0024] The preparation method of the above-mentioned clean diesel pour point depressant: according to the formula ratio of the diesel pour point depressant, take 26.0% by mass of maleic anhydride, add 45.0% by mass of glycerol, and when the temperature rises to 80°C , heated and stirred until maleic anhydride and glycerol are basically miscible. At this time, take a sample with a rubber dropper, place the sample in a conical flask, dissolve the sample with absolute ethanol, add a few drops of phenolphthalein reagent to it, and use The prepared 0.1mol / L sodium hydroxide solution is used for titration, and when the color changes in the Erlenmeyer flask and does not fade for 30 seconds, record the volume of the consumed sodium hydroxide solution, and calculate the acid value and esterification rate. Thereafter, samples were taken eve...

Embodiment 3

[0026] The clean diesel pour point depressant includes, in terms of mass percentage, 28.0% maleic anhydride, 45.0% glycerol and 27.0% oleic acid.

[0027] The preparation method of the above-mentioned clean diesel pour point depressant: according to the formula ratio of the diesel pour point depressant, take 28.0% by mass of maleic anhydride, add 45.0% by mass of glycerin, and when the temperature rises to 80°C , heated and stirred until maleic anhydride and glycerol are basically miscible. At this time, take a sample with a rubber dropper, place the sample in a conical flask, dissolve the sample with absolute ethanol, add a few drops of phenolphthalein reagent to it, and use The prepared 0.1mol / L sodium hydroxide solution is used for titration, and when the color changes in the Erlenmeyer flask and does not fade for 30 seconds, record the volume of the consumed sodium hydroxide solution, and calculate the acid value and esterification rate. Thereafter, samples were taken ever...

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Abstract

The invention belongs to the field of novel additives for petrochemical engineering, and particularly relates to a clean type diesel oil pour point depressant and a preparation method thereof. The clean type diesel oil pour point depressant is prepared from acid anhydride, long-carbon-chain fatty acid and low-carbon alcohol. The concrete preparation method comprises the following steps: (1) taking 25.0 to 28.0 parts by mass of the acid anhydride; (2) adding 43.0 to 45.0 parts by mass of the low-carbon alcohol; heating and stirring until mutual dissolution is realized; (3) measuring an esterification rate by an acid-base titration method; (4) after a period of time, adding 27.0 to 29.0 parts by mass of the long-carbon-chain fatty acid, thus obtaining a target product. Solvents and catalysts are not used; the materials are economic; the effects of cleanness and environment protection are achieved. A pour point depressant formula is applicable to better flow performance improvement when diesel oil is at low temperature; the requirements of cleanness and environment protection of combusted tail gas exhaust in the diesel oil combustion process of a diesel engine can be particularly met.

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] The currently used diesel pour point depressants are mostly ethylene-vinyl acetate polymers (EVA), poly(meth)acrylate polymers, maleic anhydride copolymers, and alkylar...

Claims

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Application Information

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IPC IPC(8): C10L1/188C10L1/182C10L1/18
CPCC10L1/14C10L1/18C10L1/182C10L1/188
Inventor 李丽华王晶张金生吴限
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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