Intensive fluorination reactor for producing dry-process aluminum fluoride

Abstract

The invention discloses an intensive fluorination reactor for producing dry-process aluminum fluoride. The intensive fluorination reactor comprises a first-section fluorination reactor and a second-section fluorination reactor connected with the first-section fluorination reactor, an aluminum hydroxide overhead bunker is connected with the inlet of the first-section fluorination reactor through afirst nitrogen sealing chamber, a screw feeder and a sealing chamber in sequence; and the first-section fluorination reactor is connected with the second-section fluorination reactor through a fluidization reverse conveying pipe. The ammonium fluoride overhead bunker is connected with the second-section fluorination reactor through a second nitrogen sealing chamber and an ammonium fluoride spiralfeeding pyrolyzer, and the discharge port of the second-section fluorination reactor is connected with a nitrogen sealing unloader. The intensive fluorination reactor is a novel fluorination reactor which is developed for overcoming the defects of existing dry-process aluminum fluoride and anhydrous aluminum fluoride production technologies in China. The reactor of the invention shortens the dry-process aluminum fluoride production process, favorably guarantees the product quality, ensures the harmlessness of the production process, and is suitable for producing the dry-process aluminum fluoride product from aluminum hydroxide and ammonium fluoride / ammonium bifluoride.

Description

technical field [0001] The invention belongs to the technical field of aluminum fluoride preparation equipment, and in particular relates to an intensive fluorination reactor for producing dry-process aluminum fluoride. Background technique [0002] Aluminum fluoride is an important inorganic chemical raw material, mainly used as electrolytic aluminum additives, ceramic co-solvents, alcohol fermentation inhibitors, non-metallic smelting solvents, etc. Anhydrous aluminum fluoride is sand-like powder, and wet-process aluminum fluoride is white powder, which is needle crystal. At present, the common processes in the production of aluminum fluoride in my country include dry process and wet process, and the dry process is divided into traditional process and anhydrous process. The chemical and physical properties of aluminum fluoride produced by different production methods are very different, which directly affects the operation, indicators, product quality and environment of e...

AI Technical Summary

Problems solved by technology

The production equipment of this process includes hydrogen fluoride generator, sulfuric acid deployment system, gas scrubbing system, hydrogen fluoride gas liquefaction device, hydrogen fluoride gasification device, fluidized bed reactor, emergency absorption system, positive and negative pressure system, etc., although the quality of the obtained product is better than Aluminum fluoride products obtained by wet process and dry process are popular in the electrolytic aluminum industry, but there are also disadvantages such as long process flow, high equipment investment, and high production cost.

Images