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Diesel fuel pour-point depressant dispersant

A diesel oil point depressant and dispersant technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problem that the effect of the dispersant is not particularly significant, and achieve the improvement of the point depressant effect, the effect is obvious, and the preparation method is simple Effect

Active Publication Date: 2012-10-24
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of this type of dispersant used alone is not particularly significant, and it usually needs to be used in combination with other pour point depressants. In recent years, there have been few studies on it. An economical and simple method for the susceptibility and effect of pour point depressants

Method used

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  • Diesel fuel pour-point depressant dispersant

Examples

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preparation example Construction

[0029] The preparation method of described diesel oil pour point depressant dispersant comprises the following steps:

[0030] A. Weigh and mix the raw materials according to the following weight percentages:

[0031] Tween 0~20%

[0032] Polyethylene glycol 0-20%

[0033] Vinyl butyl ether 0~10%

[0034] Polar nitrogen-containing compounds 0~10%

[0035] Siban-80 50~80%

[0036] Wherein, the polyethylene glycol molecular weight is 200-800, and the polar nitrogen-containing compound is selected from one of polyisobutylene diimide, triethylenetetramine, triethanolamine, and triethylamine;

[0037] B. Stir the above-mentioned raw materials in a stirred tank at a rotation speed of 100 rpm and a temperature of 50°C for 30 minutes to obtain the dispersant.

Embodiment 1

[0039] Dispersant for diesel pour point depressant consists of the following components by weight:

[0040] Tween 5%

[0041] Polyethylene Glycol 5%

[0042] Vinyl Butyl Ether 5%

[0043] Polyisobutylene diimide 10%

[0044] Span - 80 75%

[0045] Mix the dispersant prepared above with ethylene-vinyl acetate at a ratio of 1:4 and add them to Hejiawan 0 # Diesel, Jinshan 0 # Diesel, Fuyang 0 # The cold filter point of diesel oil is reduced by -15°C, -13°C, -11°C respectively, the effect is obvious and the method is simple.

Embodiment 2

[0047] Dispersant for diesel pour point depressant consists of the following components by weight:

[0048] Tween 10%

[0049] Polyethylene Glycol 10%

[0050] Vinyl Butyl Ether 5%

[0051] Polyisobutylene diimide 5%

[0052] Span - 80 70%

[0053] Mix the dispersant prepared above with ethylene-vinyl acetate at a ratio of 1:4 and add them to Hejiawan 0 # Diesel, Jinshan 0 # Diesel, Fuyang 0 # The cold filter point of diesel oil is reduced by -10°C, -10°C and -8°C respectively, the effect is obvious and the method is simple.

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Abstract

The invention discloses a diesel fuel pour-point depressant dispersant and a preparation method thereof. The dispersant comprises the following components by weight percentage: 0-20% of Tween, 0-20% of polyethylene glycol, 0-10% of vinyl alcohol butyl ether, 0-10% of polar nitrogenous compounds and 50-80% of Span-80. The raw materials are weighed and mixed according to the weight percentage, and then the materials are stirred in a stirring tank with the speed of 100rpm for 30 min at the temperature of 50 DEG C, and the dispersant is prepared. In the invention, a new dispersant mixture is prepared by combining and mixing various kinds of dispersants uniformly, and then is used with the pour-point depressant according to a certain proportion, thereby improving the sensitivity of the pour-point depressant and the effect of pour point depression.

Description

technical field [0001] The invention relates to a dispersant and a preparation method thereof, in particular to a dispersant for diesel oil pour point depressant and a preparation method thereof. technical background [0002] Diesel pour point depressant, also known as diesel low temperature fluidity improver. It is a kind of oil additive that improves the crystallization process of wax in diesel oil, lowers the freezing point of diesel oil, and makes diesel oil flow continuously at low temperature. It is added in a small amount but has a great effect. Diesel additives. It has obvious effects on increasing diesel production, saving kerosene, improving the production flexibility and economic benefits of refineries, and improving the low-temperature flow performance of diesel. After adding low-temperature flow improver to diesel oil, the alkyl wax in diesel oil can appear in the form of fine crystals, so that the diesel oil can maintain good low-temperature flow performance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/236C10L1/198C10L1/185C10L1/19C10L1/222C10L10/14
Inventor 韩生王鹏曾葵
Owner SHANGHAI INST OF TECH
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