Methanol gasoline composite additive, and preparation method and application thereof

Abstract

The invention relates to a methanol gasoline composite additive, and a preparation method and application thereof. The methanol gasoline composite additive is prepared from the following raw materials in percentage by weight: 68 to 72 percent of animal oil, 0.5 to 1.0 percent of plant oil, 0.2 to 0.5 percent of alkylbenzene, 0.1 to 0.7 percent of monoethanolamine, 0.1 to 0.7 percent of diethanolameine, 0.1 to 0.6 percent of triethanolamine, 1.0 to 2.1 percent of isooctyl nitrate, 1.0 to 2.1 percent of isopropyl nitrate, 1.0 to 2.1 percent of ethyl nitrate, 1.0 to 2.1 percent of sodium hydroxide, 1.0 to 2.1 percent of potassium hydroxide and 18 to 22 percent of water. According to the preparation method, the raw materials are sequentially put into a mixing container according to the proportion, and are stirred at the same time; then, the mixing container is put into ultrasonic waves, and agitation is performed for 15 to 25 min; and the composite additive is obtained. The composite additive provided by the invention can be applied to M25 to M60; the corrosion of methanol gasoline on an automobile can be reduced; and the octane value, the blasting point, the combustion heat value, the oil product quality and the power of the methanol gasoline can be improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum product additives, and in particular relates to a methanol-gasoline compound additive and its preparation method and application. Background technique [0002] With the rapid development of the economy, people's demand for energy has become increasingly strong, and oil and natural gas resources have gradually declined. With the gradual arrival of this energy crisis moment, the momentum of exploration and research of people beginning to search for new energy sources to replace petroleum is also developing by leaps and bounds. [0003] Alcohol is the most substitutable fuel for internal combustion engines to replace oil and natural gas. Among them, methanol has many advantages as a vehicle fuel, for example: it has a wide range of sources and can be produced by coal, natural gas or other raw materials; It effectively reduces the harmful gas in the exhaust gas, and also effectively reduces the car...

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Problems solved by technology

[0004] However, methanol gasoline often has the following problems in actual use: (1) The low calorific value of methanol (only 21000KJ / Kg) is less than half of the low calorific value of gasoline, and the power is poor when used, and it is difficult to start cold Problems; (2) Methanol produces formaldehyde and formic acid when it is not completely burned, and the latter may cause corrosion to auto parts; (3) Methanol gasoline is relatively hydrophilic, and the stability of methanol gasoline will be affected by a small amount of water. Destruction, formation of obvious stratification or turbidity, which will have a great impact on the quality of the oil

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