Method of producing gasoline blending component with high octane value by light aromatic hydrocarbon and/or alcohol/ether compound

Abstract

The invention discloses a method of producing a gasoline blending component with a high octane value by a light aromatic hydrocarbon and / or alcohol / ether compound. The method comprises the following steps: enabling raw material light aromatic hydrocarbon to enter a reactor from the top of a reactor, dividing alcohol / ether oxygenated compounds into a plurality of paths, enabling each path to enter each reaction bed layer of a multi-section quench type fixed bed reactor and then mix with the light aromatic hydrocarbon entering from the top of the reactor to react on a special catalyst to produce an alkyl-rich aromatic hydrocarbon gasoline blending component with the high octane value. The method disclosed by the invention has characteristics of a high raw material conversion ratio, good catalyst stability, a high gasoline product octane value, a simple process, low energy consumption, strong flexibility in operation scheme, and the like, and can be used for effectively promoting the light aromatic hydrogen and the alcohol / ether oxygenated compounds to efficiently convert to the gasoline blending component with the high octane value.

Description

technical field [0001] The invention belongs to the technical field of clean vehicle fuel production, and in particular relates to a method for producing high-octane gasoline blending components by alkylation of light aromatics and alcohol / ether oxygen-containing compounds. Background technique [0002] With the rapid development of my country's economy, the demand for oil resources is increasing. At present, my country's dependence on foreign oil demand has exceeded 55%, and the shortage of oil resources has become a bottleneck restricting the sustainable development of my country's economy and society. In the next few decades, the most scarce downstream products will be vehicle transportation fuels, mainly gasoline and diesel (Contemporary Petroleum and Petrochemical, Volume 17, Issue 11, 2009, Countermeasures for Sustainable Development of my country's Oil Refining and Petrochemical Industry) . In view of the current situation of my country's energy structure that is ric...

AI Technical Summary

Problems solved by technology

In the production process of p-xylene by alkylation of toluene and methanol, the acidity and pore structure of the catalyst can be adjusted by various methods, so that the selectivity of p-xylene can reach more than 95%, but the conversion rate of toluene is low (usually lower than 25 %), low utilization rate of methanol, poor catalyst stability and other key problems; especially, there is an "inverse effect" between catalyst activity and selectivity in this process: the increase in selectivity is accompanied by a significant decrease in the conversion rate of raw materials, and with the extension of reaction time, Activity decays quickly

To date, the challenge of maintaining high activity and stability in this process while maintaining high para-selectivity has not been effectively resolved