Fluorine double-inlet vertical fluorination reactor and use method thereof

Abstract

A fluorine double-inlet vertical fluorination reactor comprises a fluorination reactor body, a fluorination reactor expansion section and a fluorination reactor feeding device are connected to the upper portion of the fluorination reactor body, a filter is connected to the upper portion of the fluorination reactor expansion section, a filter pipe and a nitrogen back flushing device are arranged in the filter, and a nitrogen inlet is formed in the nitrogen back flushing device. The nitrogen inlet is communicated with the filter pipe, a uranium hexafluoride gas outlet is further formed above the nitrogen back flushing device, and the uranium hexafluoride gas outlet is communicated with the filter pipe; the lower part of the fluorination reactor body is connected with a fluorination reactor gas chamber; a fluorine gas inlet pipe a is arranged on the fluorination reactor gas chamber; and a slag tank is arranged below the fluorination reactor gas chamber. The use method of the fluorine gas double-inlet vertical fluorination reactor comprises the following steps: heating the fluorination reactor body, enabling fluorine gas to enter the fluorination reactor gas chamber and the slag tank, reacting to generate uranium hexafluoride gas, and enabling the filtered uranium hexafluoride gas to flow out of the fluorine gas double-inlet vertical fluorination reactor from the uranium hexafluoride gas outlet.

Description

Technical field [0001] The present invention belongs to the field of fluorination reactor, specifically relates to a fluorine gas double inlet vertical fluorination reactor and a method of use. Background [0002] In the front-end process of the nuclear fuel cycle, uranium conversion is an important link between uranium extraction and fuel element processing, which plays an important role in inheriting the past and the future. In the preparation process of uranium hexafluoride, due to the influence of many factors such as the particle characteristics of raw material uranium tetrafluoride, impurity components and process control, a certain amount of fluoridation reaction residue will inevitably be generated. Depending on the structure of the fluorination reactor, the amount of fluoridation reaction residue produced will also vary. [0003] Improving the fluorination efficiency of vertical fluoridation reactors can not only improve the utilization rate of uranium resources in urani...

AI Technical Summary

Problems solved by technology

Up to now, the existing fluoridation reactors in China adopt the method of slag tank packaging for temporary storage of the fluoridated ash produced, and lack of fluoridated ash treatment process, resulting in an increase in the storage of fluoridated ash year by year, a large number of The storage of fluoridated ash has become very difficult and poses a great safety risk

Images