Mixing, crushing, slag returning and scale scraping rotary reaction furnace for hydrogen fluoride production

Abstract

The invention relates to the technical field of reaction furnaces, in particular to a mixing, crushing, slag returning and scale scraping rotary reaction furnace for hydrogen fluoride production. The furnace comprises a furnace body and an outer mixer, the outer wall of the furnace body is wrapped with an outer heating jacket, and the outer wall of the outer heating jacket is sleeved with two groups of rolling rings and a group of gear rings; and the feeding end and the discharging end of the furnace body are provided with an air guide sealing device and a slag discharging device respectively, and a discharging port of the external mixer penetrates through the air guide sealing device and faces the interior of the furnace body. A slag return cylinder is arranged in the furnace body. Hastelloy, a fixing-free crushing squirrel-cage helical ribbon, the slag return cylinder with a horn slag outlet, a fan blade type inner slag return cylinder supporting plate and the like are attached to the front section and the front end cover of the reaction furnace in a lining mode, and the inner slag return cylinder supports ferrules and an unpowered scale scraping device welded to the inner slag return cylinder and used for the inner wall of a gas guide box in a sliding way. The reaction furnace can solve the problems of serious corrosion of a furnace body, prevention of crusting of a furnace wall, prevention of tension crack of an internal slag return welding seam, prevention of blockage of a hydrogen fluoride gas channel, crushing of caked materials, more complete reaction, simple structure and lower cost.

Description

technical field [0001] The invention relates to the technical field of reaction furnaces, in particular to a rotary reaction furnace for mixing, crushing, returning slag, and scraping for the production of hydrogen fluoride. Background technique [0002] The production of anhydrous hydrogen fluoride by fluorite sulfuric acid method is the most important process scheme in the production of hydrofluoric acid at present, and its main reaction equipment is an outer jacket heated rotary reactor. [0003] The externally heated hydrogen fluoride rotary reactor generally includes a feed mixing device, a furnace head gas guide sealing device, a furnace body, front and rear end covers, front and rear rolling rings, and front and rear support wheel retaining wheel devices supporting it, a large ring gear and its transmission device, External heating jacket, furnace tail slagging device, and furnace internal components, etc. The feed end of the reaction furnace is high, and the slag di...

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