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Micro-emulsified methanol diesel dispersing agent and application thereof

A technology of micro-emulsification and dispersing agent, applied in the petrochemical field, can solve the problems of high preparation cost, low calorific value of biodiesel, high cost, etc., and achieve the effects of simple operation, wide ratio range and high stability in the preparation process.

Pending Publication Date: 2022-01-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is methanol-diesel emulsion or micro-emulsion, methanol-diesel additives are the core to solve the problem of methanol-diesel miscibility. In the past two decades, there have been many invention patents around methanol-diesel additives, but most of them are not perfect. For example: Patent CN113088345A discloses A kind of methanol diesel with as many as 7 types of additives, and most of them are expensive and difficult to popularize; patent CN108913231A discloses a methanol diesel, which contains 0.04-0.06 parts of ferric chloride and 0.003-0.005 parts of Sodium carboxymethyl cellulose, these metal salts will adversely affect the life of diesel engines; in addition, there are patents using biodiesel as the main additive, including CN112725042A and CN107880950, etc., but the calorific value of biodiesel is low and the preparation cost is high. Disguised form increases the cost of methanol diesel fuel
The above problems make it difficult to popularize and apply the existing methanol diesel fuel

Method used

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  • Micro-emulsified methanol diesel dispersing agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 0.03kg of capric acid and heat it until it is completely melted, then add it to 0.95kg of hydrogenated diesel oil, 0.05kg of methanol, 0.0005kg of Span80, 0.01kg of isohexyl alcohol and 0.0005kg of monomethyl suberate and stir evenly until it is clear and transparent, that is, A micro-emulsified methanol diesel with a methanol weight fraction of 5w% was obtained. Its minimum critical temperature is 20°C, and it can be stored at room temperature for more than 45 days.

Embodiment 2

[0022] Take 0.06kg of myristic acid and heat it until it is completely melted, then add it to 0.90kg of straight-run diesel oil, 0.10kg of methanol, 0.0005kg of Tween80, 0.01kg of isohexyl alcohol and 0.0005kg of monoethyl suberate and stir until it is clear and transparent, that is, A micro-emulsified methanol diesel with a methanol weight fraction of 10w% was obtained. Its minimum critical temperature is 9°C, and it can be stored at room temperature for more than 45 days.

Embodiment 3

[0024] Take 0.04kg of linolenic acid and heat it until it is completely melted, then add it to 0.85kg of hydrogenated diesel oil, 0.15kg of methanol, 0.0003kg of Span80, 0.0003kg of Tween80, 0.04kg of linoleic acid, 0.01kg of n-heptanol and 0.0006kg of monopropyl suberate Stir evenly until it is clear and transparent, that is, micro-emulsified methanol diesel with a methanol weight fraction of 15w% is prepared. Its minimum critical temperature is 8°C, and it can be stored at room temperature for more than 40 days.

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Abstract

The invention provides a micro-emulsified methanol diesel dispersing agent which mainly comprises an emulsifier, a solubilizer and a stabilizer. The emulsifier is one or a compound of Span80 and Tween 80, the solubilizer is one or a compound of two of C10-C20 long-chain fatty acids and C6-C14 fatty alcohol, and the stabilizer is one of C8-C9 dicarboxylic acid monoester, glycol ether and propylene glycol ether. When the content of the emulsifier is 0.05-1 w%, the content of the solubilizer is 4-25 w%, and the content of the stabilizer is 0.05-1 w%, the micro-emulsified methanol and diesel mixed fuel with the methanol content of 5-50 w% can be prepared. The micro-emulsified methanol diesel dispersing agent is simple and convenient in dispersing process and easy to operate, has the characteristics of wide additive source, relatively low price and simple preparation process, and is beneficial to popularization and application. And compared with the traditional dispersant, the dispersing agent has a good micro-emulsification effect, is environment-friendly and belongs to an environment-friendly methanol diesel dispersant.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a microemulsion methanol diesel dispersant and application thereof. Background technique [0002] The basic situation of my country's energy is "rich in coal, poor in oil, and low in gas". Facing the severe energy situation and environmental pollution problems, we should reduce our dependence on petroleum fuels as much as possible and develop new energy-saving fuels. Methanol is cheap and comes from a wide range of sources, and coal-to-methanol technology has long been mature in my country. Our country produces a large amount of methanol every year, resulting in overcapacity. Therefore, if methanol and diesel can be used to prepare mixed fuel to replace part of petrochemical diesel, it will produce good economic and social benefits. However, as we all know, the polarity of methanol and diesel oil is very different, which makes it difficult for them to be miscible ...

Claims

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Application Information

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IPC IPC(8): C10L1/198C10L1/19C10L1/188C10L1/185C10L1/182C10L1/32C10L1/04
CPCC10L1/143C10L1/328C10L1/04C10L1/1822C10L1/1824C10L1/1881C10L1/1905C10L1/1852C10L1/1983C10L1/198C10L1/19
Inventor 夏道宏李子涵朱丽君杨朝合
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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