Uranium trioxide fluidized bed hydrogen reduction process

Abstract

The invention discloses a uranium trioxide fluidized bed hydrogen reduction process, which consists of the steps of test platform construction, gas mixing, feeding, reaction, discharge and exhaust gas emission, etc. The invention realizes the technological route of UO2 preparation by UO3 hydrogen reduction for the first time at home. In the route, the fluidized bed is selected as the reduction reactor, and has the advantages of excellent heat transfer performance, easy realization of uniform control of the bed temperature, simple structure, convenient maintenance and high production capacity. In addition, application of the fluidization technology can achieve full contact of a gas phase and a solid phase, strengthens mass transfer and heat transfer effects, and is easy to realize high reaction yield of materials.

Description

technical field

[0001] The invention relates to the hydrogen reduction process technology of uranium trioxide fluidized bed in the field of uranium conversion, in particular to the process of generating uranium dioxide by reacting hydrogen gas prepared by electrolysis of hydrogen fluoride and uranium trioxide in a fluidized bed main reactor in the field of uranium conversion . Background technique

[0002] As one of the main uranium conversion processes, at present, there are many technological routes for preparing UO2 by reducing UO3. However, in the conversion process of natural uranium, there are three main process routes that can be produced on a large scale and have practical application value: AUC pyrolysis reduction method, ADU calcination-reduction method, and UNH denitrification-reduction method. However, in the process of the first two methods, precipitants such as (NH4)2CO3, NH3, CO2 must be used, and a certain amount of waste liquid will be produced. However, t...

Images