Preparation method of diesel oil pour point depressant containing styrene-fumaric acid copolymer

The technology of fumaric acid copolymer and fumaric acid copolymer is applied in the field of oil additives, and can solve the problems of no obvious improvement, insignificant improvement effect of cooling point, poor biodiesel susceptibility, and the like, To achieve the effect of effective cooling point, good stable dispersion, preventing crystal formation

Inactive Publication Date: 2014-05-07
JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the common diesel pour point depressants can improve the freezing point of diesel oil, but the improvement effect on the cooling point is not obvious, and the sensitivity to some biodiesel is not good, and there is no obvious improvement effect

Method used

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  • Preparation method of diesel oil pour point depressant containing styrene-fumaric acid copolymer
  • Preparation method of diesel oil pour point depressant containing styrene-fumaric acid copolymer
  • Preparation method of diesel oil pour point depressant containing styrene-fumaric acid copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put 1 mol of fumaric acid into the flask, connect condensed water, add 4 mol of benzene, start stirring at a stirring speed of 150r / min, heat to dissolve, then add 1 mol of styrene into the dropping funnel, and add 1 mol of benzene peroxide Dissolve formyl in 4mol benzene and put it in the dropping funnel, wait for the temperature to reach 80°C, start adding benzoyl peroxide and styrene dropwise, control the dropping speed, finish adding in 1 h, and then react for 1 h to get white flocculent substance. The reaction mixture was separated and filtered with ethanol, and dried in an oven to obtain styrene-fumaric acid copolymer S-FU.

[0031] Add 1 mol of S-FU, 1 mol of methanol, 0.2 mol of p-toluenesulfonic acid, and 0.5 mol of toluene as a solvent into the flask, install the condenser and pass condensed water, start stirring and heating, and react at 120°C for 1.5 hours to obtain mono Ester S-FU-Dx.

[0032] Add 1 mol of S-FU, 1 mol of methanol, 0.2 mol of p-toluenesulf...

Embodiment 2

[0035] Put 1 mol of fumaric acid into the flask, connect condensed water, add 4.5 mol of benzene, start stirring at a stirring speed of 200r / min, heat to dissolve, then add 1 mol of styrene into the dropping funnel, and 1 mol of peroxidized Dissolve benzoyl in 4.5 mol of benzene and put it into the dropping funnel, wait until the temperature reaches 90°C, start adding benzoyl peroxide and 1 mol of styrene dropwise, control the rate of addition, finish adding in 1 h, and then react for 1 h, A white flocculent substance was obtained. The reaction mixture was separated and filtered with ethanol, and dried in an oven to obtain styrene-fumaric acid copolymer S-FU.

[0036] Add 1 mol of S-FU, 1 mol of methanol, 0.2 mol of p-toluenesulfonic acid, and 0.5 mol of toluene as a solvent into the flask, install a condenser and pass condensed water, start stirring and heating, and react at 120°C for 2 hours to obtain a monoester Compound S-FU-Dx.

[0037] Add 1 mol of S-FU, 1 mol of metha...

Embodiment 3

[0040] Put 1 mol of fumaric acid into the flask, connect condensed water, add 5 mol of benzene, start stirring at a stirring speed of 200r / min, heat to dissolve, then add 1 mol of styrene into the dropping funnel, and add 1 mol of benzene peroxide Dissolve formyl in 5 mol of benzene and put it in the dropping funnel, wait for the temperature to reach 95°C, start to drop benzoyl peroxide and 1 mol of styrene, control the rate of addition, finish adding in 1 h, and then react for 1 h to obtain white flocculent substance. The reaction mixture was separated and filtered with ethanol, and dried in an oven to obtain styrene-fumaric acid copolymer S-FU.

[0041]Add 1 mol of S-FU, 1 mol of methanol, 0.2 mol of p-toluenesulfonic acid, and 0.5 mol of solvent toluene into the flask, install the condenser and pass condensed water, start stirring and heating, and react at 120°C for 2 hours to obtain a monoester Compound S-FU-Dx.

[0042] Add 1 mol of S-FU, 1 mol of methanol, 0.2 mol of p...

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Abstract

The invention relates to the field of oil additives, and particularly relates to a preparation method of a diesel oil pour point depressant containing a styrene-fumaric acid copolymer. The preparation method comprises the steps of aggregation, mono-esterification, dual-esterification and mixing. The diesel oil pour point depressant containing the styrene-fumaric acid copolymer has the good effect of stably dispersing microcrystal, is capable of relatively effectively reducing the condensation point and the cold filtering point of diesel oil, and improves the susceptibility on diesel oil with different resources; by taking the diesel gross as a reference, after the diesel oil pour point depressant disclosed by the invention is added to the 0# diesel oil with the different resources according to the adding amount of 700ppm, the cold filtering point be reduced by 7 DEG C to the greatest extent, and after the diesel oil pour point depressant disclosed by the invention is added to the 10# diesel oil with the different resources according to the adding amount of 700ppm, the cold filtering point of the 10# diesel oil can be lowered by 5 DEG C to the greatest extent.

Description

technical field [0001] The invention relates to the field of oil additives, in particular to a method for preparing a diesel pour point depressant containing styrene-fumaric acid copolymer. Background technique [0002] Diesel pour point depressant is a commonly used additive in diesel production. Diesel pour point depressant plays a good role in increasing the production of diesel in refineries, improving the flexibility of production and the ratio of diesel to gasoline, and improving economic benefits. [0003] The reason why diesel oil solidifies at a lower temperature is that diesel oil contains a certain amount of wax (that is, normal alkanes). When the temperature drops, these waxes will gradually precipitate and form wax crystals. As the temperature further decreases, the wax crystals will grow rapidly, first forming planar crystals, and these crystals are connected to each other to form a three-dimensional network structure, enclosing the oil in it, making the oil l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/02C08F8/14C10L1/196
Inventor 张成如
Owner JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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