A kind of alkylation reactor and method

Abstract

The invention discloses an alkylation reactor. The interior of the reactor is mainly composed of multiple groups of nozzles and distributors at the tail ends of the nozzles, and a reaction material is sprayed by the multiple groups of nozzles, mixed and subjected to a reaction. The alkylation reactor is characterized in that the multiple groups of nozzles are arranged inside the reactor from top to bottom; the first group of nozzles is connected with the top of the reactor, and the spraying direction is downward along the reactor. Other groups of nozzles are fixed inside the reactor by fixed brackets. The number of nozzles in each group is usually 1-4. Each nozzle comprises two channels, the first channel of the nozzle penetrates through the center of the nozzle, and the second channel is annular in shape and is separated from the first channel. The two channels are converged at the bottom of each nozzle and are communicated with each distributor. The alkylation reactor has the characteristics of simple structure, short process flow, large elasticity of operation and the like, and is suitable for a reaction for generating high-octane-rating alkylate oil from isoalkane and low-carbon olefin under an action of a liquid acid catalyst.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, in particular to an alkylation reactor and an alkylation reaction method. Background technique [0002] High-octane alkylate produced from low-carbon olefins and iso-alkanes under liquid acid catalysis is an ideal gasoline blending component. The low-carbon olefins and isoalkanes used in the alkylation reaction have poor solubility with liquid acid catalysts, especially isoalkanes and liquid acid catalysts are difficult to dissolve. Although the solubility of low-carbon olefins and acid catalysts is slightly better than that of isoalkanes, low-carbon olefins are easily polymerized into high polymers above C12 under the action of liquid acid catalysis above 10°C. In addition, the alkylation reaction is still an exothermic reaction. If the reaction temperature is not properly controlled, the side reactions of light olefin polymerization will be aggravated, which will seriously affect the qual...

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Problems solved by technology

The reaction heat removal method of the patented reactor is the gasification of light hydrocarbons. In order to maintain a low reaction temperature, the reactor needs a large amount of gasification space

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