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The exploration on the new process of hydrofluorination of uranium dioxide

Technical Report:

Abstract

The optimum treatment of the reaction conditions were achieved based on the kinetic data of the hydrofluorination of uranium dioxide (material obtained from uranyl nitrate by one step denitration-reduction process) and the flow characteristic of reactor. A new process is proposed that is the stirred bed (exhaust gas section) in series with fluidized bed (production section). The optimum design and experimental study of operation conditions of the stirred bed reactor have been completed. The results of hot modelling test of the stirred bed reactor showed that the conversion of UO{sub 2} to UF{sub 4} in the exit stream was 47{approx}50% and the hydrogen fluoride remaining in the exhaust gas was less than 5%. Comparision with the circuit of two fluidized beds in series showed that the conversion of stirred bed was nearly same as the first fluidized bed but the hydrogen fluoride remaining in the exhaust gas was considerably decreased.
Authors:
Jun, Zhao; Siyuan, Zhao; Guohong, Shen [1] 
  1. Tianjin Univ. (China); and others
Publication Date:
Apr 01, 1990
Product Type:
Technical Report
Report Number:
CNIC-00395; TU-0010.
Reference Number:
SCA: 050400; PA: AIX-23:010690; SN: 92000637618
Resource Relation:
Other Information: PBD: Apr 1990
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; URANIUM DIOXIDE; FLUORINATION; CHEMICAL PREPARATION; CHEMICAL REACTION KINETICS; FLUIDIZED BEDS; HYDROFLUORIC ACID; OPTIMIZATION; QUANTITY RATIO; STIRRING; TEMPERATURE DEPENDENCE; URANIUM TETRAFLUORIDE; 050400; FEED PROCESSING
OSTI ID:
10111328
Research Organizations:
China Nuclear Information Centre, Beijing, BJ (China)
Country of Origin:
China
Language:
Chinese
Other Identifying Numbers:
Other: ON: DE92613387; TRN: CN9101688010690
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
11 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Jun, Zhao, Siyuan, Zhao, and Guohong, Shen. The exploration on the new process of hydrofluorination of uranium dioxide. China: N. p., 1990. Web.
Jun, Zhao, Siyuan, Zhao, & Guohong, Shen. The exploration on the new process of hydrofluorination of uranium dioxide. China.
Jun, Zhao, Siyuan, Zhao, and Guohong, Shen. 1990. "The exploration on the new process of hydrofluorination of uranium dioxide." China.
@misc{etde_10111328,
title = {The exploration on the new process of hydrofluorination of uranium dioxide}
author = {Jun, Zhao, Siyuan, Zhao, and Guohong, Shen}
abstractNote = {The optimum treatment of the reaction conditions were achieved based on the kinetic data of the hydrofluorination of uranium dioxide (material obtained from uranyl nitrate by one step denitration-reduction process) and the flow characteristic of reactor. A new process is proposed that is the stirred bed (exhaust gas section) in series with fluidized bed (production section). The optimum design and experimental study of operation conditions of the stirred bed reactor have been completed. The results of hot modelling test of the stirred bed reactor showed that the conversion of UO{sub 2} to UF{sub 4} in the exit stream was 47{approx}50% and the hydrogen fluoride remaining in the exhaust gas was less than 5%. Comparision with the circuit of two fluidized beds in series showed that the conversion of stirred bed was nearly same as the first fluidized bed but the hydrogen fluoride remaining in the exhaust gas was considerably decreased.}
place = {China}
year = {1990}
month = {Apr}
}