Technology for preparing high-cleanliness and high-octane gasoline from methanol through one-step catalysis method

Abstract

The invention relates to a technology for preparing high-cleanliness and high-octane gasoline from methanol through a one-step catalysis method. The process of preparing gasoline from methanol is a strong heat release process, and existing technologies for preparing gasoline from methanol at home and abroad all adopt recycle gas (which mainly contains mixed methane, ethane, hydrogen, propane, butane, pentane, carbon monoxide, carbon dioxide and the like) as a heat taking medium to take away heat generated in a reactor, so as to control the outlet temperature of the reactor; liquefied gas (mainly containing propane and butane) produced by a device per se is adopted in the technology to substitute the recycle gas and enters the reactor to serve as a heat removal medium, and the liquefied gas rarely participates in reaction under the same reaction condition, the reaction product is basically unchanged. The technology has the advantages that a recycle gas compressor is not needed, the equipment investment is greatly reduced, the running power consumption of the device is reduced, the heat exchange flow of the device is optimized, the device is simple, stable and reliable in operation, and meanwhile, the public engineering grade is also reduced, so that the technology has significant practicability, huge economic benefits and wide application prospect.

Description

technical field [0001] The invention relates to a process technology for producing high-clean high-octane gasoline from methanol by one-step catalytic method. The invention belongs to the field of coal chemical industry. Background technique [0002] At present, the domestic air pollution problem has become more and more serious. The main reason is that the PM2.5 particles exceed the standard. The main reason for the excessive PM2.5 particles is the combustion of coal and the emission of vehicle exhaust. Therefore, the number of coal-fired boilers is gradually reduced in China. , while improving the quality of gasoline. [0003] my country is short of oil, low in gas, and rich in coal. Therefore, it has always been a feature of the development of domestic energy and chemical industries to carry out research on coal-based energy and promote the diversification of energy utilization. With the rapid development of coal chemical industry in recent years, the rapid expansion of...

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Problems solved by technology

With the rapid development of coal chemical industry in recent years, the rapid expansion of methanol enterprises has led to a serious excess of domestic methanol production capacity. At present, the operating rate of methanol plants in my country is less than 60%, and methanol is saturated in the global market

Shanxi Institute of Coal Chemical Industry and Saiding Engineering Co., Ltd. have already operated one set in Inner Mongolia Kingho Chemical Co., Ltd., and built a set of methanol-to-gasoline project in Tangshan, Hebei. However, at present, this technology requires the use of large cycle gas compressors, and there is construction The problem of high investment cost and high operating cost after completion

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