A kind of inorganic acid treatment method and device of aluminum isopropoxide waste catalyst

Abstract

The invention relates to the field of chemical processes, and particularly discloses an inorganic acid treatment method for an aluminium isopropoxide dead catalyst and a device adopting the method. According to the method, an inorganic acid solution is taken as an acidolysis extraction agent for acidolysis extraction to the aluminium isopropoxide dead catalyst generated during reduction process ofunsaturated aldehyde ketone, so that organic phases and inorganic phases are separated; useful components in the separated organic phases are further recycled, aqueous phase obtained after separation are evaporated and concentrated to obtain an aluminiferous product. According to the invention, the operation is simple, green and environmentally friendly; the treatment problem on the aluminium isopropoxide dead catalyst is solved by adopting a relative gentle method, on the other hand, benefits are increased to a certain extent, and condensate can be used repeatedly.

Description

(1) Technical field [0001] The invention relates to the field of chemical technology, in particular to a method for treating waste aluminum isopropoxide catalyst with inorganic acid and a device thereof. (2) Background technology [0002] As an important chemical raw material, aluminum isopropoxide is often used as a crosslinking agent for adhesives because of its unique physical and chemical properties. agent. In addition, in the field of organic synthesis, aluminum isopropoxide is a highly selective aldehyde and ketone reduction catalyst for unsaturated aldehydes and ketones. Compared with other reduction catalysts, its advantages are very obvious. When reducing unsaturated carbonyl compounds , has high selectivity to carbonyl, the reaction conditions are relatively mild, the reaction is very smooth, and the -NO in the compound 2 , C=C, -COOR and other groups have almost no effect. At the same time, the production process of aluminum isopropoxide is simple and the cost ...

AI Technical Summary

Problems solved by technology

At the same time, there will be some by-products and polymer accumulation during the reaction process. These by-products are mixed with the aluminum isopropoxide catalyst to form a viscous aluminum isopropoxide waste catalyst. This viscous Aluminum-containing mixture, which is easy to absorb moisture and solidify into hard lumps, thereby clogging pipes and storage containers

At present, there is no better treatment method in the industry, and it can only be treated by incineration.

The use of incineration treatment not only leads to the loss of useful substances in this aluminum-containing mixed product, but also produces more solid alumina residues and relatively large odors, which increases the difficulty of further processing and also derives related products. environmental issues

Images