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Fluorination technology for recovering fluorine gas

A kind of chemical process, fluorine gas technology, applied in the field of uranium conversion, can solve the problems of small demand for UF6 and unobvious recycling economy, achieve significant economic and environmental benefits, loose technical conditions, avoid wasteful effect

Active Publication Date: 2015-05-20
THE 404 CO LTD CHINA NAT NUCLEAR
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Problems solved by technology

[0005] In the 1970s, Plant No. 404 used the original UF6 production line to carry out exploratory research on the recovery and reuse of excess fluorine gas in the tail gas of the fluorination process. Large, the recovery and reuse of excess fluorine gas in fluorination production is not economical, so in-depth research has not been carried out

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  • Fluorination technology for recovering fluorine gas

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The invention mainly consists of two parts: a fluorination process and a fluorine gas recovery and reuse process. The fluorination reactor is a vertical fluorination reactor, and the fluorine gas absorption reactor is a horizontal stirred bed reactor. The fluorine gas absorption reactor is docked with the fluorination reactor, and the solid material feed end of the absorption reactor is directly used as the system material inlet end, and the solid material inlet end of the fluorination reactor is replaced by the material outlet end of the fluorine gas absorption reactor, omitting material transfer Compared with foreign fluorination process technology routes, the process flow of this method is shorter. The gas inlet port of the fluorine gas absorption reactor is the furnace gas containing fluorine gas and a small amount of uncondensed deposited UF...

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Abstract

The invention discloses a fluorination technology for recovering fluorine gas. The method comprises the steps of fluorination and fluorine gas absorption. In the invention, a fluorine gas absorption reactor is abutted to a fluorination reactor, the solid material feeding end of absorption reactor is directly used as a system material inlet end, and the solid material inlet end of the fluorination reactor is substituted by the material outlet end of the fluorine gas absorption reactor, so a material transfer process is omitted. Compared with foreign fluorination technologies, the method has the advantages of short process flow and simple operation control. The technical scheme of the method adapts to the self characteristic of the technical route of uranium hexafluoride production technologies in China, and can be realized on the basis of original mature process flow without complex change.

Description

technical field [0001] The invention belongs to the technical field of uranium conversion, and in particular relates to a fluorination process for recovering fluorine gas. Background technique [0002] Refined uranium tetrafluoride fluorination method is currently adopted by most uranium hexafluoride production plants in the world. To maximize the conversion rate of uranium tetrafluoride, the fluorination reaction requires the use of fluorine gas that exceeds the stoichiometric amount. As one of the most important raw materials in the production process of UF6, fluorine gas is usually obtained by high-current electrolysis, which is complicated to prepare and expensive, and occupies a large proportion in the production and operation costs of the fluorination process. Therefore, its utilization The rate is one of the important indicators to measure the economics of UF6 production and operation. Maximizing the utilization rate of fluorine gas is equally important as maximizing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G43/06
Inventor 魏刚刘建车陈建勇张慧忠向锡洪马翔周文涛蒋勇刘宾
Owner THE 404 CO LTD CHINA NAT NUCLEAR
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