A high-gravity cross-flow high-pressure full-phase reactor for preparing nano-alumina

Abstract

The invention provides a super-gravity cross flow high-pressure whole-phase reaction kettle for preparing nanometer aluminum oxide. The reaction kettle at least comprises a kettle body and a liner, wherein the liner is positioned inside the kettle body; a separator rack is arranged in the middle of the kettle body; a bowl-shaped inserted air guide sleeve is arranged on the separator rack; through holes are uniformly distributed in the air guide sleeve; the kettle body is divided into an upper cavity and a lower cavity through the air guide sleeve; the liner is arranged in the upper cavity; a pressurization feeder is arranged on the top of the kettle body; a feeding guide pipe is vertically arranged in the liner; through holes are uniformly distributed in the upper section and the lower section of the feeding guide pipe; the top end of the feeding guide pipe extends out of the kettle body and is connected with the pressurization feeder; the bottom end of the feeding guide pipe downwards extends into the air guide sleeve; a stirrer, an inner slot thread wall and an outer slot thread wall are arranged at the bottom of the lower cavity. According to the super-gravity cross flow high-pressure whole-phase reaction kettle provided by the invention, the defects generated when nanometer aluminum oxide is prepared through a super-gravity reaction-hydrothermal coupling method in the prior art are overcome.

Description

technical field [0001] The invention provides a reaction kettle, in particular relates to a high-gravity cross-flow high-pressure full-phase reaction kettle used for preparing nano-alumina, and belongs to the technical field of chemical equipment. Background technique [0002] Nano-alumina is the "rice" of nano-materials, with multiple sources and wide uses. No matter in the field of materials, chemical industry, or daily chemical industry, it has shown amazing effects, and its application prospect is huge. However, various preparation methods have many unsatisfactory defects in production equipment, production technology, and product performance. The preparation technology of nano-alumina in different forms has become a hotspot that developed countries are competing to develop. [0003] The latest high-gravity rotating bed reactor can meet the requirements of the reaction nucleation zone, but so far it can only achieve the neutralization and decomposition of sodium alumin...

AI Technical Summary

Problems solved by technology

[0003] The latest high-gravity rotating bed reactor can meet the requirements of the reaction nucleation zone, but so far it can only achieve the neutralization and decomposition of sodium aluminate solution and carbon dioxide gas-liquid phase, and expensive rotors must be installed

The production process of nano-alumina preparation is complicated, the separation of products is difficult, the circulation of intermediates and the pollution, corrosion, poisoning and other problems caused by thermochemical reactions lead to the reduction of product performance, environmental pollution and high cost

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