Segmented-charged alkylation reaction method

Abstract

The invention discloses a segmented-charged alkylation reaction method. The segmented-charged alkylation reaction method comprises the steps: enabling concentrated sulfuric acid and isobutane to enter a colloid mill, and thoroughly mixing, so as to form an emulsion; enabling the emulsion and a hydrocarbon mixture containing C3-C5 alkene and isobutane to enter an alkylation reactor for reaction, wherein the reactor comprises a tube body, closure heads, a revolving bed, a charging pipe, a charge distribution pipe, a discharging opening, a circulating cooling gas inlet and a circulating cooling gas outlet; the revolving bed is connected with a driving device through a revolving shaft, the charge distribution pipe is arranged in a hollow tube structure of the center of the revolving bed and is communicated with the charging pipe, the discharging opening is formed in the lower part of the reactor, static components and revolving components are sequentially arranged at the radial outer side of the revolving bed, and a circulating cooling gas refrigeration system is arranged between the circulating cooling gas inlet and the circulating cooling gas outlet. Compared with the prior art, the alkylation reaction method disclosed by the invention has the advantages that the degree of mixing of isobutane and concentrated sulfuric acid can be greatly increased, the reaction can be carried out at relatively low temperature, the acid consumption of the reaction is low, the quality of products is high, and the equipment scale is small.

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...

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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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