Temperature-resistant microemulsified methanol diesel oil and preparation method thereof

Abstract

The invention discloses a temperature-resistant microemulsified methanol diesel oil which consists of 65-70% of diesel oil, 10-15% of water, 2-5% of methanol, 8-10% of emulsifier, and 5-10% of cetane number enhancer; the emulsifier consists of the following components in percentage by mass: 15-25% of yeast, 15-25% of enzymes in flour, 5-15% of sodium dodecyl benzene sulfonate, 5-15% of fatty alcohol-polyoxyethylene ether, 5-15% of anhydrous ethanol, 5-10% of urea, 1-5% of dimethylformamide, 1-5% of potassium hydroxide and 5-10% of cyclohexylamine. A preparation method of the methanol diesel oil comprises the following steps of: preparing the cetane number enhancer and the emulsifier respectively, taking an approximate amount of obtained cetane number enhancer, the emulsifier, the diesel oil and water and then mixing and stirring with the methanol for 40 minutes, and standing for 4 hours. The microemulsified methanol diesel oil has the characteristics of quietness, dispersity, antioxidantion, anticorrosion, defoaming, pour point reduction and the like, thereby being suitable for alpine regions; and in addition, a pour point can reach less than minus 30 DEG C, and the temperature-resistant microemulsified methanol diesel oil can not be layered and emulsified after the long-time storage, so that the methanol diesel oil can essentially reach standards of a national standard diesel oil.

Description

technical field [0001] The invention relates to a carbon-containing liquid fuel, in particular to a temperature-resistant micro-emulsified methanol diesel and a preparation method thereof. Background technique [0002] It is a well-known fact that the world's energy shortage will further intensify. This is the inevitable result of the gradual reduction of oil reserves. With the depletion of oil resources, the price of refined oil continues to skyrocket. my country is a big agricultural country, and a large number of agricultural machinery, transportation vehicles, ships, industrial refineries, and boilers in hotels and schools mostly use diesel as the main fuel, and the sharp rise in diesel prices has increased the cost of various industries and affected social and economic development. develop. [0003] For this reason, many scientists are researching and exploring various new energy sources that can save energy or replace petroleum products, such as wind energy, solar ...

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Problems solved by technology

[0004] At present, although there are many types of methanol diesel, there are generally the following problems: the performance is unstable at extreme low and high temperatures, and stratification is easy to occur, resulting in water seepage emulsification, poor start-up in cold weather, and general products are below - Phase separation will occur at 25°C, so it is difficult to use in northern regions in winter. In addition, methanol diesel has problems such as dissolution aid, corrosion protection and quality assurance. As the temperature rises, general products will cause "air blockage" in the engine oil pipeline. Phenomenon

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