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Fluidized bed system for calcination of high level radioactive waste

Abstract

During the operation of nuclear facilities significant quantities of radiochemical liquid effluents of different concentrations and varying chemical compositions are generated. These effluents contain activated radionuclides, corrosion products and fission products. The advantage of feeding the waste in solid form into the vitrifying equipment are multifold. Efforts are therefore made in many countries to calcine the high level waste, and obtain waste in the oxide form before the same is mixed with glass forming additives and fed into the melter unit. An experimental rig for fluidized bed calcination is constructed for carrying out the detailed investigation of this process, in order to adopt the same for plant scale application. To achieve better gas-solid contact and avoid raining down of solids, a distributor of bubble cap type was designed. A review of existing experience at various laboratories and design of new experimental facility for development of calciners are given. (author). 11 refs., 5 figs.
Authors:
Pande, D P; Prasad, T L; Yadgiri, N K; Theyyunni, T K [1] 
  1. Process Engineering and Systems Development Division, Bhabha Atomic Research Centre, Mumbai (India)
Publication Date:
Jun 01, 1994
Product Type:
Conference
Report Number:
CONF-9406439-
Reference Number:
SCA: 052001; PA: AIX-29:018155; EDB-98:047899; SN: 98001952213
Resource Relation:
Conference: ACE-94: advances in chemical engineering in nuclear and process industries, Mumbai (India), 9-11 Jun 1994; Other Information: DN: 11 refs., 5 figs.; PBD: Jun 1994; Related Information: Is Part Of Advances in chemical engineering in nuclear and process industries; PB: 628 p.
Subject:
05 NUCLEAR FUELS; CALCINATION; CALCINED WASTES; FLOWSHEETS; FLUIDIZED BEDS; HIGH-LEVEL RADIOACTIVE WASTES; PROCESS CONTROL; RADIOACTIVE EFFLUENTS; RADIOACTIVE WASTE PROCESSING; SPECIFICATIONS; VITRIFICATION
OSTI ID:
591994
Research Organizations:
Board of Research in Nuclear Sciences, Department of Atomic Energy, Mumbai (India).
Country of Origin:
India
Language:
English
Other Identifying Numbers:
TRN: IN9800268018155
Submitting Site:
INIS
Size:
pp. 242-251
Announcement Date:

Citation Formats

Pande, D P, Prasad, T L, Yadgiri, N K, and Theyyunni, T K. Fluidized bed system for calcination of high level radioactive waste. India: N. p., 1994. Web.
Pande, D P, Prasad, T L, Yadgiri, N K, & Theyyunni, T K. Fluidized bed system for calcination of high level radioactive waste. India.
Pande, D P, Prasad, T L, Yadgiri, N K, and Theyyunni, T K. 1994. "Fluidized bed system for calcination of high level radioactive waste." India.
@misc{etde_591994,
title = {Fluidized bed system for calcination of high level radioactive waste}
author = {Pande, D P, Prasad, T L, Yadgiri, N K, and Theyyunni, T K}
abstractNote = {During the operation of nuclear facilities significant quantities of radiochemical liquid effluents of different concentrations and varying chemical compositions are generated. These effluents contain activated radionuclides, corrosion products and fission products. The advantage of feeding the waste in solid form into the vitrifying equipment are multifold. Efforts are therefore made in many countries to calcine the high level waste, and obtain waste in the oxide form before the same is mixed with glass forming additives and fed into the melter unit. An experimental rig for fluidized bed calcination is constructed for carrying out the detailed investigation of this process, in order to adopt the same for plant scale application. To achieve better gas-solid contact and avoid raining down of solids, a distributor of bubble cap type was designed. A review of existing experience at various laboratories and design of new experimental facility for development of calciners are given. (author). 11 refs., 5 figs.}
place = {India}
year = {1994}
month = {Jun}
}