Inorganic acid treatment method for aluminium isopropoxide dead catalyst and device adopting method

A technology of aluminum isopropoxide and waste catalyst, applied in the direction of aluminum sulfur compound, aluminum sulfate, chemical recovery, etc., can solve the problems of blockage of pipelines and storage containers, loss of useful substances, easy moisture absorption, etc., to avoid environmental problems and ensure Repeated use, increased effectiveness

Active Publication Date: 2018-11-13
齐翔华利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Inorganic acid treatment method for aluminium isopropoxide dead catalyst and device adopting method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 50g of the mixed product and 200g of sulfuric acid solution (wt%: 5%) for mixing and stirring. After stirring evenly, let it stand for stratification. The mass of the upper organic oil phase is 42g, and the lower aluminum-containing aqueous phase is 206g. The lower aqueous phase was concentrated by heating, and crystallized by cooling to obtain 32 g of solid aluminum sulfate.

Embodiment 2

[0026] Take 50g of the mixed product and 100g of sulfuric acid solution (wt%: 10%) for mixing and stirring. After stirring evenly, let it stand for stratification. The mass of the upper organic oil phase is 41g, and the lower layer contains aluminum-containing aqueous phase 108g. The lower aqueous phase was concentrated by heating, and crystallized by cooling to obtain 33 g of solid aluminum sulfate.

Embodiment 3

[0028] Take 50g of the mixed product and 75g of sulfuric acid solution (wt%: 15%) for mixing and stirring. After stirring evenly, let it stand for stratification. The mass of the upper organic oil phase is 42g, and the lower aluminum-containing aqueous phase is 81g. The lower aqueous phase was concentrated by heating and crystallized by cooling to obtain 31 g of solid aluminum sulfate.

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PUM

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/74
CPCC01F7/74Y02P20/584
Inventor 钱庆安汪青海陈新建
Owner 齐翔华利新材料有限公司
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