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Preparation method of water-alcohol mixed base micro-emulsified diesel oil

A mixed-base, micro-emulsion technology, which is applied in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of inability to realize large-scale industrial production, expensive surfactants, and high cost of micro-emulsions, and achieve the elimination of icing phenomenon , the appearance is clear and transparent, and the effect of low cost

Inactive Publication Date: 2013-05-01
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there are too many types of additives added and the amount added is relatively large (the amount of additives added is equivalent to the total amount of methanol and water added, and some even the amount of additives added is higher than the total amount of methanol and water added), Moreover, some surfactants are expensive, which virtually increases the cost; in addition, the preparation method is quite complicated and the preparation conditions are harsh: some require more complicated equipment, and some even need to be completed under high temperature and high pressure.
Therefore, the prepared microemulsion generally has high cost and unsatisfactory stability, and cannot realize large-scale industrial production.

Method used

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  • Preparation method of water-alcohol mixed base micro-emulsified diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 2g of oleic acid to 30g of diesel oil, stir to dissolve it, then add 0.5g of stearic acid, and stir rapidly (at a speed of 300 rpm) until the stearic acid is completely dissolved to form solution A;

[0024] (2) Add isooctyl alcohol, isobutanol, ethyl acetate, and triethanolamine (both 0.5g) to 10g of methanol in sequence (make sure that the previous additive is completely dissolved before adding the next raw material ), stirring and dissolving to obtain solution B; under rapid stirring, solution B was added to solution A, and then stirred rapidly for 80 minutes to obtain clear and transparent microemulsion C;

[0025] (3) Weigh 0.1g of sodium hydroxide, dissolve it in 10g of tap water, add 2g of oleic acid, stir and react at room temperature for 1~2min; after the reaction is complete, add it to microemulsion C, and stir rapidly for 100min to form a milky Liquid D;

[0026] (4) Add 1.1g of surfactants (Span-80 1g, Tween-80 0.1g) into emulsion D, and continue to...

Embodiment 2

[0029] (1) Add 2.5g of oleic acid to 30g of diesel oil, stir to dissolve it, then add 0.5g of stearic acid, and stir rapidly (at a speed of 300 rpm) until the stearic acid is completely dissolved to form solution A;

[0030] (2) Add 0.5g of isooctyl alcohol, 0.5g of isobutanol, 1.0g of ethyl acetate, and 0.5g of triethanolamine to 10g of methanol in sequence (before adding the next raw material, it must be ensured that the previous additive has been Completely dissolve), stir and dissolve to obtain solution B; add solution B to solution A under rapid stirring, and then stir rapidly for 80 minutes to obtain clear and transparent microemulsion C;

[0031] (3) Weigh 0.1g of sodium hydroxide, dissolve it in 10g of tap water, add 2g of oleic acid, stir and react at room temperature for 1~2min; after the reaction is complete, add it to microemulsion C, and stir rapidly for 100min to form a milky Liquid D;

[0032] (4) Add 1.1g of surfactants (Span-80 1g, Tween-80 0.1g) into emulsio...

Embodiment 3

[0035] (1) Add 3g of oleic acid to 30g of diesel oil, stir to dissolve it, then add 0.5g of stearic acid, and stir rapidly (at a speed of 300 rpm) until the stearic acid is completely dissolved to form solution A;

[0036] (2) Add isooctyl alcohol, isobutanol, ethyl acetate, and triethanolamine (both 0.5g) into 10g of methanol in sequence (make sure that the previous additive is completely dissolved before adding the next raw material ), stirring and dissolving to obtain solution B; under rapid stirring, solution B was added to solution A, and then stirred rapidly for 80 minutes to obtain clear and transparent microemulsion C;

[0037] (3) Weigh 0.1g of sodium hydroxide, dissolve it in 10g of tap water, then add 2g of oleic acid, stir and react at room temperature for 1~2min; after the reaction is complete, add it to microemulsion C, and stir rapidly for 100min to form a milky Liquid D;

[0038] (4) Add 2.2g of surfactants (Span-80 2.0g, Tween-80 0.2g) into emulsion D, and co...

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Abstract

The invention discloses a preparation method of water-alcohol mixed base micro-emulsified diesel oil. The micro-emulsified diesel oil is prepared through emulsification by taking diesel oil, methanol and water as basic materials, and taking oleic acid, stearic acid, a surfactant, isooctyl alcohol, isobutyl alcohol, n-amyl alcohol, ethyl acetate, triethanolamine and the like as assistants. The micro-emulsified diesel oil is clear and transparent in appearance, and similar to pure diesel oil; the density is 867-869kg / m<3>; the kinematic viscosity is 13.6241-15.4780mm<2> / s; and a condensation point is between -7.5 DEG C and -5 DEG C. The micro-emulsified diesel oil is longer in quality guarantee period, can be stably stored for over 3 months, is low in assistant consumption, low in toxicity, simple in preparation method, mild in technological condition and low in cost, has small harms to a human body and an environment, and facilitates industrial production.

Description

technical field [0001] The invention relates to a preparation method of microemulsion diesel oil, in particular to a preparation method of water-alcohol mixed base microemulsion diesel oil. Background technique [0002] With the deepening of people's research on microemulsions, in recent years, people have begun to explore water-alcohol mixed-based microemulsion diesel oil. Compared with water-based diesel oil microemulsions, the energy of water-alcohol mixed-based microemulsions High density, in addition to the advantages of low flash point, it can also eliminate the phenomenon of freezing when used at low temperature. Since water-alcohol mixed-based microemulsion diesel combines the advantages of water-based diesel microemulsion fuel and methanol-based diesel microemulsion fuel, it has the characteristics of less emulsifier consumption, long stable period and high calorific value, etc. It has aroused people's attention, scholars at home and abroad have conducted extensive...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/04C10L1/30C10L1/222C10L1/198C10L1/19C10L1/188C10L1/182C10L1/12
Inventor 査飞金凯
Owner NORTHWEST NORMAL UNIVERSITY
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