ENGINEERING STUDIES ON POT CALCINATION FOR ULTIMATE DISPOSAL OF NUCLEAR WASTE FROM TBP-25, DAREX, AND PUREX PROCESSES. PART II. COLLECTION OF PERFORMANCE DATA AND ANALYSIS
Experience with the operation of an experimental engineering-development pot-calcination facility, including two types of evaporators with associated control systems and a calciner pot up to 8 in. in diameter and 90 in. high, formed the basis for the recommendation of equipment and operating procedures for the hot-pilot-plant phase of the waste-calcination program. The operating data and results from about 20 runs are shown in tables and graphs, and significant operating variables are discussed. A continuous waste evaporator with a 25-liter operating volume, a batch evaporator with a capacity of 500 liters, and waste caiciner pot with a 60-liter operating capacity were operated to obtain the necessary data to facilitate the design of the pot-calcination pilot plant. The three types of feed used were Purex, TBP-25, and Darex. The average feed rates varied from a low of 7.0 liters/hr to a maximum of 30.6. The total feed volume calcined varied from 325 to 641 liters. The reduction in volume for the Purex waste was about 10 to 1, and for TBP-25 and Darex the reduction was about 8 to 1. The volume ratio of water added to strip the nitric acid from the evaporator to feed volume varied from 2.0: 1.0 to 4.1: 1.0. The resulting calcined solids had bulk densities of about 0.6 g/cc for TBP-25 waste, about 1.2 g/cc for Darex, and about 1.25 g/cc for Purex. The pot-calcination process is a simple direct approach for preparing high-activity liquid wastes for ultimate disposal, as it requires a small number of processing steps. It is versatile enough to handle a variety of fuel processing wastes, for example, Purex, TBP-25, and Darex, and it produces a small volume of off-gas to be processed for recycle or disposal to the environment. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-17-040417
- OSTI ID:
- 4636586
- Report Number(s):
- ORNL-TM-619
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- United States
- Language:
- English
Similar Records
Engineering studies on pot calcination for ultimate disposal of nuclear waste from the TBP-25, DAREX, and PUREX processes. Part I. The system evaluation
ENGINEERING STUDIES ON POT CALCINATION FOR ULTIMATE DISPOSAL OF NUCLEAR WASTE FROM THE TBP-25, DAREX, AND PUREX PROCESSES. PART I. THE SYSTEM EVALUATION