TH1988B - Process for producing hydrogen fluoride - Google Patents

Abstract

A process for producing hydrogen fluorite by using fluorite as a starting material and by reacting it in a reactor. The first and the second, where the fluorite reaction with sulfuric acid sulfuric anhydrite and steam in the reactor The first will produce a transition from 35 to 90% while keeping the reaction temperature within the range of 140 to 240 °C by controlling individual quantities of sulfuric anhydrite, water vapor and sulfuric acid. Rick

Claims (4)

1.Process for production Hydrogen fluorite Containing fluorite to react with sulfuric acid Anhydride of sulfuric acid and steam in the first reactor under conditions that The temperature inside the reactor was maintained in the range of 140 ° to 240 ° C by using the steam heating reaction. With anhydride of sulfuric acid and sulfuric acid And by using the steam itself, which would give the fluorite a conversion from 35 to 90% and the supply of the first reactor to the second. Where fluorite is converted to hydrogen fluorite 2. Process according to claim 1, where the heat at Required for the reaction of fluorite with sulfuric acid in The first reactor is obtained by the hundreds of reactions that take place. By reacting fluorite with sulfuric anhydrides and vapor. Water and by heating the sensible material of the input material and the heat required for the reaction in the second reactor To enter from outside 3. Process according to claim 1, where the reaction In the first reactor this was done by means of a stirrer that was contained in the reactor. The stirrer was coated with a characteristic film. The flakes formed from the material inside the reactor 4. Process according to claim 3 where this agitator It is not in direct contact with sulfuric acid. 5. Process according to claim 3, where this agitator It is surrounded by a layer of powdery material formed by the material inside. In a reactor that is at least 3 mm thick around the surface of the stirrer, 6. Process according to claim 3, where the stirrer is It is a dual shaft paddle stirrer. 7. Process according to claim 6, where the stirrer blade The double shaft paddle has an outer speed of the blade from 20 to 150 m / min. 8. Process according to claim No. 1, where the reactor The first machine was designed in such a way that the fluorite enters the tip. One of the reactors and producing the reaction is taken away from the other end of the reactor. 9. Process according to claim 8 where the residence time. The fluorite in the first reactor is approximately 30 minutes, and during the reaction time of the material inside the first reactor, water vapor and sulfuric acid anhydride are supplied. In the first such reactor at the end of the reactor that Fluorite was added from the beginning of the reaction until Until the reaction is 15 minutes 1 0. Process according to Clause 9, which in addition to paying. Anhydride of sulfuric acid And the steam to the first reactor was also supplied with sulfuric acid and / or fuming sulfuric acid. Rick enters the reactor at the end of the reactor that supplies the fluorite. Into the interval from 3 minutes to reaction time 20 minutes. 1. Process according to claim 1, whereby anhydrides of Sulfuric acid is obtained from fuming sulfuric acid 1. 2. Process according to claim 1, where anhydride of sulfuric acid and steam is supplied into the first reactor as Said via separate fluid nozzles 1 3. Process according to claim No. 1, where the flow rate Of gas as a reaction product flowing in the space above in The first reactor was at a maximum of 3 m / s 1. 4. The process according to claim 1, where sulfuric acid and / or sulfuric acid are dispensed to the skin formed by Inlet material and / or reaction products with dosing rate That is from 500 to 5000 kg / square meter-hour (14 claims, 2 pages, 0 photos)