Novel columnar vertical fluorination reactor

Abstract

The invention provides a novel columnar vertical fluorination reactor. The novel columnar vertical fluorination reactor comprises a furnace gas outlet upper flange, dust removing devices, a filter pipe, an upper expanded section, a discharging inclined pipe, an air exhausting opening, a heating device, a gas chamber, a slag pot, a lead layer shielding sleeve and a main reactor. The novel columnar vertical fluorination reactor has the characteristics that the primary utilization rate of fluorine gas is high, the slag production rate is low, the control temperature is low, the structure is simple, the operation is simple, the maintenance is convenient and the like, and is suitable for a uranium conversion fluorination process production line which takes refined uranium tetrafluoride as a raw material and enables uranium tetrafluoride to react with the fluorine gas to generate uranium hexafluoride.

Description

technical field [0001] The invention belongs to the technical field of uranium conversion, and in particular relates to a device for converting and producing uranium hexafluoride in a fluorination process for producing uranium hexafluoride. Background technique [0002] The industrial production methods of UF6 mainly include refined UF4 fluorination method and fluoride volatilization method, and the former is adopted by most UF6 production plants in the world today. The fluorination reactor is the core equipment in the fluorination process. Currently, flame furnace reactors and fluidized bed reactors are widely used in industry. The flame furnace reactor is a continuous fluorination tower reactor developed by United Carbide Corporation in 1950 to replace the previous intermittent production equipment; the fluidized bed reactor is adjusted by adjusting the process parameters and using its excellent Excellent heat transfer performance, in order to achieve the purpose of cont...

AI Technical Summary

Problems solved by technology

The disadvantages of the flame furnace are: 1. In order to ensure that the gas-solid material is fully mixed, there are extremely high requirements for the particle size, distribution and performance of the dispersion device of the UF4 powder; 2. The corrosion rate of the furnace body is high and the service life is short , about 1 to 2 years; 3. The yield of ash and slag is high; 4. There is a large excess of fluorine gas, and the utilization rate of primary fluorine gas is low; 5. It is not suitable for fluorination of crude UF4 containing impurities with low melting point

The reactor has the characteristics of high primary utilization rate of fluorine gas, low ash yield, and low control temperature; compared with other types of fluorination reactors, the structure is simpler, easy to maintain, and relatively longer in service life, but it also has local High corrosion rate, easy deformation and other disadvantages, short service life

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