Is it good to use alcohol-based fuel? Are there any shortcomings?

It is good, environmentally friendly, and has high thermal efficiency. The disadvantage is that the calorific value is slightly lower and the consumption is large. \x0d\\x0d\Crude methanol, the main raw material of alcohol-based fuel, is a hot topic in the development of private fuels today. The promotion of this technology has attracted great attention from relevant national ministries and commissions. my country's alcohol-based fuels are currently mainly used for stoves. However, there are many problems in the development of alcohol-based fuels and stoves in my country. For example, the fuel formula is complex, there is no unified standard, and a large amount of water and some harmful substances are added to the fuel. \x0d\There are currently three types of alcohol-based fuels: \x0d\⑴Alcohol-water type fuel. That is, the fuel contains more than 20% water. Methanol fuel itself has a low calorific value, and the addition of water makes the fuel even lower. Many units that engage in alcohol-water fuel claim that adding water to alcohol and adding a certain catalyst can decompose the water and produce hydrogen to increase the calorific value. This is a wrong concept that violates scientific principles. Therefore, the alcohol-water type fuels we have seen so far have very poor use effects. The calorific value cannot meet the technical requirements of the "alcohol-based civil fuel" industry standard, and The gasification effect of stoves using this kind of alcohol-type fuel is not good, and the structural design of the stove is complex. We believe this fuel cannot be promoted. \x0d\⑵Alcohol-type fuel. This kind of fuel mainly adds 10% hydrocarbons to crude methanol to increase the calorific value of the fuel. Due to the addition of hydrocarbons, alcohol-based fuels are prone to stratification during storage and use. Appropriate addition of cosolvents allows the alcohol-based fuels and hydrocarbons to be evenly mixed without stratification. At present, this kind of fuel is widely used, but the promotion of this kind of fuel must control the fuel formula. It is best to use a fuel formula with a combination of no more than 3 yuan (excluding water), that is, methanol-co-solvent-hydrocarbons. It is strictly prohibited to add harmful organic chemical products as additives to complicate the formula. At the same time, it is best to control the water content to no more than 10%, and the hydrocarbon content should be compatible with the stove. \x0d\⑶Alcohol ether type fuel. Alcohol ether fuel technology was mainly developed by the Southwest Chemical Industry Research Institute of the Ministry of Chemical Industry. The characteristic of this fuel is that most of the dimethyl ether is dissolved in methanol and water, and at the same time, the dimethyl ether generates the pressure required for raw material supply in the cylinder. This avoids the need for external preheating and pressurization during the ignition process of existing alcohol-water and alcohol-hydrocarbon fuels, and is a promising fuel. However, due to the high cost of dimethyl ether, difficulty in storage, and the large amount of water in the fuel, it is difficult to use supporting stove fuel, so it is difficult to promote it now. We believe that alcohol-based fuels should now be promoted as the second alcohol-based fuel mentioned above. With the improvement of people's living standards, alcohol-ether fuels with lower water content will be gradually promoted.