Optimization of tungsten powder fluorination with fluorine in a fixed bed reactor, while ensuring environmental requirements
https://doi.org/10.17073/0021-3438-2016-4-23-33
Abstract
In order to simulate tungsten powder fluorination with fluorine and condensation of WF6 produced, computational methods based on the physical and chemical process principles were developed which satisfactorily describe experimental data available. They were used to optimize the equipment size and parameters of two-stage tungsten powder fluorination process with the condensation of liquid WF6 after each stage at 2,5–3,0 °C. The possibility of WF6 production at an output rate of 5,23, 6,53 and 7,83 kg/h in reactors with a diameter of 200, 300 and 360 mm respectively, at a temperature of 300–350 °C without forced cooling of the most heat-stressed first fluorinator was demonstrated. Besides, the total fluorine utilization over 99,99 % was achieved with the amount of hazardous gases escaping the process (F2, WF6) below their maximum permissible concentrations even in the ventilation gas volume. Some recommendations were given on the organization of tungsten powder fluorination flow process.
About the Author
Yu. M. Korolev
Scientific-technical association «Powder Metallurgy»
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Prof., President,
105005, Moscow, 2-nd Baumanskaya str., 9/23
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Review
For citations:
Korolev Yu.M. Optimization of tungsten powder fluorination with fluorine in a fixed bed reactor, while ensuring environmental requirements. Izvestiya. Non-Ferrous Metallurgy. 2016;(4):23-33. (In Russ.) https://doi.org/10.17073/0021-3438-2016-4-23-33
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