A kind of aluminum trichloride immobilized catalyst ebullating bed production device

Abstract

The invention relates to an aluminum trichloride-immobilized catalyst production apparatus and a preparation technology thereof. especially relates to an aluminum trichloride-immobilized catalyst boiling bed production apparatus and a preparation technology thereof. A technical scheme of the present invention is characterized in that N2 gas is introduced in a CCl4 storage tank through a N2 flowmeter, N2 is taken as a carrying gas for carrying the CCl4 saturated vapor into an AlCl3 generator, AlCl3 gas is generated by reacting with Al2O3, AlCl3 gas is introduced in to a boiling bed reactor through a cooler, and is immobilized with a suspension carrier in the boiling bed; a gas internal circulation method is employed in the boiling bed reactor, so that AlCl3 is cycled in the boiling bed, and is fully contacted with carrier particles for reacting, N2 gas containing a few of AlCl3 passes through an AlCl3 collector, and is washed to remove the residual AlCl3 and then is discharged into atmosphere; and aluminum trichloride-immobilized catalyst is recovered for storage. The apparatus is easy for industrial production, equipment corrosion, environmental pollution and difficult separating with products can be effectively solved, and the method has the advantages of low reaction temperature, high immobilization rate and uniform supporting.

Description

technical field [0001] The invention relates to the field of composition and preparation technology of an aluminum trichloride solid-supported catalyst production device, in particular to an aluminum trichloride solid-supported catalyst fluidized bed production device and a preparation process. Background technique [0002] As a Friedel-Crafts catalyst, aluminum trichloride has a wide range of uses and is one of the catalysts for chemical, petroleum refining and pharmaceuticals. It has excellent catalytic performance, but the catalyst is highly corrosive and the post-treatment process is relatively complicated. It is difficult to separate from the product and produces a large amount of waste water to cause environmental pollution. It is not commensurate with the concept of cleaner production, and its application is increasingly limited. [0003] In order to solve this problem, people have been using AlCl 3 Immobilization, while maintaining AlCl 3 Under the premise of exce...

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Problems solved by technology

[0002] As a Friedel-Crafts reaction catalyst, aluminum trichloride has a wide range of uses. It is one of the catalysts in chemical industry, petroleum refining and pharmaceuticals. It has excellent reactions in alkylation, acylation, alkane isomerization, cracking and polymerization. Excellent catalytic performance, but the catalyst is highly corrosive and the post-treatment process is relatively complicated. It is difficult to separate the same product and use it to generate a large amount of waste water, causing environmental pollution. It is not commensurate with the concept of clean production, and its application is increasingly restricted.

Due to some problems in the fixed bed: such as poor heat transfer of solid particles, uneven bed temperature, AlCl 3 It is difficult to diffuse on the fixed bed carrier, local overheating leads to the loss of hydroxyl groups and the change of the crystal shape of the carrier, etc., resulting in low catalyst product loading and product quality cannot be guaranteed, so fixed bed immobilized catalyst technology is difficult for industrial production

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