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Novel cylinder reactor for hydrogen fluoride rotary furnace

A technology of hydrogen fluoride and rotary furnace, applied in the direction of hydrogen fluoride, fluorine/hydrogen fluoride, etc., can solve the problems of insufficient size and structure, short service life, poor corrosion resistance, etc., and achieve excellent stability, prolong service life, and shock resistance Excellent effect

Inactive Publication Date: 2017-09-26
陈梦云
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Problems solved by technology

[0003] The technical problem solved by the present invention: provide a new hydrogen fluoride rotary furnace reaction cylinder, which solves the technical problems of poor stability of the cylinder material, insufficient optimization of size and structure, poor corrosion resistance and short service life in the prior art

Method used

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  • Novel cylinder reactor for hydrogen fluoride rotary furnace

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Embodiment Construction

[0011] Attached below figure 1 An embodiment of the present invention is described.

[0012] The new hydrogen fluoride rotary furnace reaction cylinder has a corrosion-resistant inner cylinder body. The corrosion-resistant inner cylinder body is a corrosion-resistant nickel-based alloy inner cylinder body 1, and the nickel-based alloy is used to replace the traditional pure nickel material to make the cylinder body. By using The solid solution strengthening effect of nickel on Cr Mo and other metals endows nickel with better stability and corrosion resistance, prolongs the service life of the substrate and retains the advantages of easy welding and convenient manufacturing of nickel materials, greatly weakening the side effects of hydrogen fluoride preparation. Reaction medium H 2 SO 4 , HF, SiH 4 、H 2 SiF 6 、H 2 S, SO 2 Corrosion to the cylinder body; the preferred grade of the corrosion-resistant nickel-based alloy inner cylinder body 1 is NS331 nickel-chromium-molybd...

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Abstract

A new hydrogen fluoride rotary furnace reaction cylinder is provided, which has a corrosion-resistant inner cylinder, the corrosion-resistant inner cylinder is a corrosion-resistant nickel-based alloy inner cylinder, and the diameter of the corrosion-resistant nickel-based alloy inner cylinder is 350- 550mm, the length is 4000-6300mm, and the wall thickness is 6.5-10mm. The grade of the corrosion-resistant nickel-based alloy inner cylinder is NS331 nickel-chromium-molybdenum alloy. The invention solves the technical problems of poor material stability, insufficient optimization of size and structure, and poor corrosion resistance of the hydrogen fluoride rotary furnace reaction cylinder in the prior art, and the service life is as long as 1-2 years.

Description

technical field [0001] The invention belongs to the technical field of fluorine chemical equipment manufacturing, and in particular relates to a novel hydrogen fluoride rotary furnace reaction cylinder. Background technique [0002] Hydrogen fluoride is the basis of modern fluorine chemical industry and the basic raw material for the production of fluorine and fluorides. It is often used in the field of rare earth metallurgy technology. The preparation of hydrogen fluoride needs to be carried out in a hydrogen fluoride rotary furnace. The raw materials are fluorite powder and sulfuric acid. Due to its reaction The process is a slow and complex process, so with the occurrence of many side reactions, the H in the medium produced by the side reactions 2 SO 4 , HF, SiH 4 、H 2 SiF 6 、H 2 S, SO 2 All will cause a certain degree of corrosion to the reaction cylinder. If the temperature or operation is improper, the cylinder life of the rotary furnace reaction cylinder under t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/19
CPCC01B7/192
Inventor 陈梦云
Owner 陈梦云
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