A mass transfer enhanced alkylation reactor and alkylation process method

Abstract

The invention discloses an alkylation reactor and an alkylation process method, comprising a reactor cylinder body, a head, a rotating bed, a feeding pipe, a feeding distribution pipe, a material outlet, a circulating cooling gas inlet, and a circulating cooling air Gas outlet, circulating cooling air refrigeration system; the reactor cylinder and the head constitute a closed shell, the rotating bed is set in the middle of the shell, the feed distribution pipe is in the center of the rotating bed, the feed distribution pipe is connected with the feed pipe, and the discharge The mouth is at the lower part of the shell; the fin assembly is arranged radially outside the rotating bed, and the upper and lower ends of the fin assembly are respectively connected with the inlet and outlet of the circulating cooling air through the upper and lower circulating cooling air distribution pipes, and the inlet and outlet of the circulating cooling air are arranged on the shell , The circulating cooling air refrigeration system is between the inlet and outlet of the circulating cooling air. The alkylation method of the present invention uses concentrated sulfuric acid as a catalyst and isobutane and olefins as raw materials to carry out the alkylation reaction, the reaction can be carried out at a relatively low temperature, the acid consumption is low, the product quality is high, and the equipment scale is small.

Description

technical field [0001] The invention relates to an alkylation reactor and an alkylation reaction method, in particular to an alkylation reactor and an alkylation reaction method which adopt 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, ma...

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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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