High-proportion methanol gasoline for vehicle and preparation method thereof

Abstract

The invention discloses high-proportion methanol gasoline for a vehicle. The methanol gasoline comprises the following components in percentage by weight: 74 to 88.5 percent of methanol, 5 to 10 percent of low-carbon oxygen-containing component oil, 1 to 3 percent of mixed C5, 2 to 6 percent of mixed ether, 2 to 3 percent of C4 hydrocarbon, 1 to 2 percent of mixed alcohol and 0.5 to 2 percent of liquefied petroleum gas, wherein the low-carbon oxygen-containing component oil consists of 70 percent of dimethoxymethane and 30 percent of gasoline hydrocarbon with final boiling point less than 200DEG C; the mixed C5 consists of 80 percent of C5 alkane and 20 percent of C5 alkene; the C4 hydrocarbon is butane; and the mixed alcohol consists of ethanol, n-propanol and iso-propanol in the weight ratio of 4 to 3 to 3. In the preparation method, the high-proportion methanol gasoline product with reid vapor pressure (RVP) value ranging from 82 to 101kpa is prepared at the temperature of between-30 and 15 DEG C; and the method comprises the following steps of: uniformly mixing the components in weight percentage in the claim 1; and filling a preparation tank with the C4 hydrocarbon and the liquefied petroleum gas by using a dispenser to prepare the methanol gasoline. The methanol gasoline and the method have the advantages of making full use of the excess methanol resource, saving the petroleum resource, improving the cold start performance and solving the problem that high-proportion methanol gasoline can not be used in cold area.

Description

Technical field: [0001] The invention belongs to a methanol gasoline for vehicles and a preparation method thereof, in particular to a high-proportion methanol gasoline for vehicles and a preparation method thereof. Background technique: [0002] With the rapid development of my country's economy, the demand for oil is increasing year by year, and the high dependence on international oil seriously affects my country's energy security. Methanol gasoline will be one of the most promising alternative energy sources in my country due to its advantages of cleanliness and low price. [0003] In 2009, the two national standards of "Methanol Gasoline for Vehicles (M85)" and "Methanol for Vehicle Fuel" were implemented. The methanol gasoline produced according to these two standards must be installed with a flexible fuel controller before it can be used. After the automotive test of the flexible fuel controller, it was found that methanol gasoline still has the problem of poor start...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-proportion methanol gasoline for vehicles and a preparation method thereof, which are used to solve the problems of difficult use of high-proportion methanol gasoline in alpine regions and poor low-temperature start-up performance