Technique for preparing gasoline by methanol

Abstract

The invention relates to deep processing technology of methanol specific for producing gasoline with methanol, which solves the problems of hard controlling of the reaction temperature and inefficient extraction of the intermediate product of dimethyl ether in producing gasoline with methanol in prior art. The technology comprises the step of sending methanol vapor into the synthesis reactor which is equipped with at least three catalyst beds containing ZSM-5 catalysts to produce gasoline at a reaction temperature of 300-400DEG C and a pressure of 2.3-2.1MPa. The technology of the invention produces gasoline directly with raw materials which can produce dimethyl ether at the same time, making it possible to produce gasoline and dimethyl simultaneously with one raw material through different and respective producing technology. More importantly, the large-scale industrialized production becomes possible by efficiently controlling the temperature in the gasoline-synthesizing reactor through four different temperature-controlling methods.

Description

technical field [0001] The invention relates to a methanol deep-processing technology, in particular to a methanol-to-gasoline technology. Background technique [0002] Due to the shortage of oil resources, the price of domestic refined oil, which relies heavily on imports, has also risen continuously with international energy prices; at the same time, vehicle exhaust emissions have also caused serious environmental pollution. In order to solve these two world problems, research on the use of methanol to produce gasoline has been carried out is very extensive. According to existing literature, a way to utilize methanol is to mix methanol and gasoline in a certain proportion and add some additives. The resulting methanol gasoline is generally a mixture of methanol and gasoline. Another way is to directly convert methanol into high-quality gasoline. The representative technology is the use of ZSM-5 molecular sieve catalysts developed by MOBIL in the United States to convert m...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a methanol-to-gasoline technology in order to solve the problems in the prior art that the temperature is difficult to control during the reaction process of using methanol to produce gasoline and the intermediate product dimethyl ether cannot be effectively extracted

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