A kind of two-stage feed alkylation reaction process method

Abstract

The invention discloses a two-stage feeding alkylation reaction method. Concentrated sulfuric acid and isobutane enter a colloid mill and are fully mixed to form an emulsion; the emulsion enters with mixed hydrocarbons containing C3-C5 olefins and isobutane The reaction is carried out in the alkylation reactor; the reactor includes a cylinder, a head, an inner rotating bed, an outer rotating bed, a feed pipe, a feed distribution pipe, a material outlet, a circulating cooling gas inlet, and a circulating cooling gas outlet; the inner rotating The bed is connected to the upper driving device through the feed pipe, the upper part of the inner rotating bed and the feed distribution pipe are fixedly connected by a sealing member, and the upper part of the outer rotating bed is fixedly connected to the reactor shell through a sealing member. The bed is connected to the lower drive unit through a rotating shaft. The alkylation reaction method of the invention can greatly increase the mixing degree of isobutane and concentrated sulfuric acid, can ensure that the reaction is carried out at a lower temperature, has low reaction acid consumption, high product quality, and small equipment scale.

Description

technical field [0001] The invention relates to an alkylation reaction method, in particular to an alkylation reaction method using isobutane and C3-C5 olefins to catalyze the alkylation reaction. Background technique [0002] With the development of the economy, especially the rapid development of the transportation industry, the emission of vehicle exhaust is one of the main sources of air pollution. Improving the quality of gasoline is the most important way to reduce the pollution of vehicle exhaust. The alkylated oil obtained by the alkylation reaction of isobutane and C3-C5 olefins has the characteristics of no sulfur, high octane number, small difference between the octane number of the research method and the octane number of the motor method, and is a high-quality An important blending component of clean gasoline. [0003] Alkylation reaction is a traditional technology in the field of petroleum refining, mainly including sulfuric acid alkylation technology and hyd...

AI Technical Summary

Problems solved by technology

This reactor is not suitable for the sulfuric acid alkylation reaction process, because the heat exchange method adopted is the heat extraction method of circulating materials, which is not suitable for the sulfuric acid alkylation reaction with large exothermic heat. The liquid storage tank at the lower part of the reactor and The use of reaction material circulation operation mode will increase the side reaction

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