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Diesel oil cold filter clogging temperature improving agent and preparation method thereof

A cold filter point and improver technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of cold filter point rebound and rebound, and achieve the effect of preventing rebound rebound

Inactive Publication Date: 2010-03-10
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a diesel oil cold filter point improver to overcome the problems existing in the prior art in view of the problem that the cold filter point of diesel oil with high wax content and narrow fraction is added to the pour point depressant and left for a period of time. Defects

Method used

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  • Diesel oil cold filter clogging temperature improving agent and preparation method thereof
  • Diesel oil cold filter clogging temperature improving agent and preparation method thereof
  • Diesel oil cold filter clogging temperature improving agent and preparation method thereof

Examples

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example 1

[0023] This example is the preparation of a diesel oil cold filter point improver

[0024] Put 0.01mol maleic acid mixed alcohol ester, 0.01mol fumaric acid mixed alcohol ester, 0.04mol vinyl acetate and 60g toluene in a container equipped with an electric stirrer, a thermometer, a reflux condenser, and a nitrogen gas introduction tube In the reactor, feed nitrogen for 15-30 minutes, and maintain a weak nitrogen flow during the reaction, heat and stir, and raise the temperature to 40-60°C, add 0.16g composite initiator, 0.04mol mixed alcohol acrylate, and heat up to 70 ~90°C, keep warm for 4-6 hours. The composite initiator is composed of benzoyl peroxide and azobisisobutyronitrile in a mass ratio of 1:0.6. Then undergo vacuum distillation, washing, suction filtration and drying to obtain a tetrapolymer, and finally add 15.6 g of Tween-80, stir and mix to prepare a cold filtration point improver.

[0025] Weigh 0.24g of cold filtration point improver, add 300g of diesel oil,...

example 2

[0027] This example is the preparation of a diesel oil cold filter point improver

[0028] Put 0.01mol maleic acid mixed alcohol ester, 0.01mol fumaric acid mixed alcohol ester, 0.05mol vinyl acetate and 60g toluene in a container equipped with an electric stirrer, a thermometer, a reflux condenser, and a nitrogen gas introduction tube In the reactor, feed nitrogen for 15-30 minutes, and maintain a weak nitrogen flow during the reaction, heat and stir, and raise the temperature to 40-60°C, add 0.24g composite initiator, 0.05mol mixed alcohol acrylate, and heat up to 70 ~90°C, keep warm for 4-6 hours. The composite initiator is composed of benzoyl peroxide and azobisisobutyronitrile in a mass ratio of 1:0.6. Then undergo vacuum distillation, washing, suction filtration and drying to obtain a tetrapolymer, and finally add 18.45 g of Tween-65, stir and mix to prepare a cold filtration point improver.

[0029] Weigh 0.24g of cold filtration point improver, add 300g of diesel oil...

example 3

[0031] This example is the preparation of a diesel oil cold filter point improver

[0032] Put 0.01mol maleic acid mixed alcohol ester, 0.01mol fumaric acid mixed alcohol ester, 0.06mol vinyl acetate and 60g toluene in a container equipped with electric stirrer, thermometer, reflux condenser and nitrogen gas introduction tube In the reactor, feed nitrogen for 15-30 minutes, and maintain a weak nitrogen flow during the reaction process, heat and stir, and raise the temperature to 40-60°C, add 0.34g composite initiator, 0.06mol mixed alcohol acrylate, and heat up to 70 ~90°C, keep warm for 4-6 hours. The composite initiator is composed of benzoyl peroxide and azobisisobutyronitrile in a mass ratio of 1:0.6. Then undergo vacuum distillation, washing, suction filtration and drying to obtain a tetrapolymer, and finally add 11.28 g of Tween-20, stir and mix to prepare a cold filtration point improver.

[0033] Weigh 0.24g of cold filtration point improver, add 300g of diesel oil, ...

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Abstract

A diesel oil cold filter clogging temperature improving agent and preparation method thereof belongs to the diesel oil additive field, aiming at solving the problem of rebound in the additive diesel oil cold filter clogging temperature. The invention is composed by 55-85 weight percent of quadripolymer and 15-45 weight percent of surfactant by optimization and formulation; wherein the quadripolymer is prepared by the steps that: under the action of compound initiating agent, solvent is added with maleic acid mixed alcohol ester, fumaric acid mixed alcohol ester, vinyl acetate and acrylic acid mixed alcohol ester for radical solution polymerization, the mol ratio of reactants is 1:1:1:1 to 1:1:8:8, the dosage of the compound initiating agent is 0.5-1.5% of the total weight of monomer, the dosage of the solvent is 150-300% of the total weight of the monomer, temperature rises to 70-90 DEG C by heating, and reaction is carried out for 4-6 hours. The invention can cause the cold filter clogging temperature of diesel oil with high wax content and narrow fraction to be reduced by 3-6 DEG C, and the cold filter clogging temperature of diesel oil can not rebound within 90 days.

Description

technical field [0001] The invention belongs to the field of diesel oil additives, and in particular relates to a diesel oil cold filter point improver and a preparation method thereof. Background technique [0002] The fluidity of diesel oil at low temperature is not only related to whether the fuel supply system of diesel engine can supply oil normally at low temperature, but also closely related to whether the storage, transportation, loading and unloading of diesel oil can be carried out normally at low temperature. The low-temperature fluidity of diesel oil can be measured by cloud point, cold filter point, pour point and freezing point. Among them, the cold filter point has a good correspondence with the actual use temperature of diesel oil, which has practical guiding significance for the use of diesel oil. Therefore, it is usually used The cold filter point is used to measure the low temperature flow performance of diesel oil. It is a common method to improve the lo...

Claims

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Application Information

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IPC IPC(8): C10L1/198C10L1/197C10L1/19C10L10/14C08F218/08C08F220/18C08F222/14
Inventor 汪树军杜涛刘红研
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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