Methanol diesel oil and preparation method thereof

Abstract

The invention provides methanol diesel oil, which is prepared from the following ingredients in percentage by weight: 60 to 85 percent of diesel oil, 5 to 30 percent of methyl alcohol, 1 to 5 percentof water, 1 to 10 percent of modifying agents and 0.01 to 0.03 percent of KBr. According to a preparation method, the diesel, the methyl alcohol, the water, the modifying agents and the KBr accordingto the recipe quantity are uniformly mixed; the materials are put under the ultrasonic waves being 1 to 10kHz to be vibrated for 3 to 10s to obtain a finished product. The prepared methanol diesel oilhas the advantages that the storage stability is high; the water resistant capability is high; the flash point is high; the cetane number is high; the low-temperature starting performance is good.

Description

technical field [0001] The invention belongs to the field of fuel technology, and in particular relates to methanol diesel and a preparation method thereof. Background technique [0002] With the rapid development of the global economy, the demand for oil in countries around the world is increasing day by day, but oil is a non-renewable energy source, and the world's oil reserves are decreasing year by year. The shortage of oil has become a long-term pressure restricting the development of the world economy. At present, the main purpose of petroleum is to produce gasoline and diesel for use in internal combustion engines. However, due to the low combustion efficiency of internal combustion engines, a large amount of fine dust containing carbon-containing substances in the exhaust gas is suspended in the air, resulting in serious environmental pollution. Sulfur dioxide produced after combustion , polycyclic benzene carcinogens have caused great harm to human health. [0003]...

AI Technical Summary

Problems solved by technology

Due to the huge difference in the polarity and physical and chemical properties of methanol and diesel, methanol diesel has the following disadvantages: 1. Methanol is very polar, and its affinity with water is more than 100 times that of diesel, so methanol diesel is very water resistant. Poor, the allowable moisture content is only 0.5%, and the methanol and diesel will separate after water; 2. The closed flash point of methanol is much lower than that of diesel, only 11-12 ° C, so the flash point of methanol-diesel blended fuel is low; 3. The cetane number of methanol is only 3 to 5, which leads to poor cetane number of methanol diesel, poor ignition, unstable engine operation, and prone to knocking; 4. Methanol diesel belongs to the microemulsion system and becomes emulsion when it meets water , the droplet particles are larger, the oil filter is easy to be blocked due to the liquid resistance effect, and the emulsion formed after encountering water is left for a long time, and the methanol and diesel oil will be stratified, and the water resistance is poor.