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Some Examples of Residence-Time Distribution Studies in Large-Scale Chemical Processes by Using Radiotracer Techniques

Conference:

Abstract

The application of radiotracers to determine flow patterns in chemical processes is discussed with particular reference to the derivation of design data from model reactors for translation to large-scale units, the study of operating efficiency and design attainment in established plant and the rapid identification of various types of process malfunction. The requirements governing the selection of tracers for various types of media are considered and an example is given of the testing of the behaviour of a typical tracer before use in a particular large-scale process operating at 250 atm and 200 Degree-Sign C. Information which may be derived from flow patterns is discussed including the determination of mixing parameters, gas hold-up in gas/liquid reactions and the detection of channelling and stagnant regions. Practical results and their interpretation are given in relation to an define hydroformylation reaction system, a process for the conversion of propylene to isopropanol, a moving bed catalyst system for the isomerization of xylenes and a three-stage gas-liquid reaction system. The use of mean residence-time data for the detection of leakage between reaction vessels and a heat interchanger system is given as an example of the identification of process malfunction. (author)
Authors:
Bullock, R. M.; Johnson, P.; Whiston, J. [1] 
  1. Imperial Chemical Industries Ltd., Billingham, Co., Durham (United Kingdom)
Publication Date:
Jun 15, 1967
Product Type:
Conference
Report Number:
IAEA-SM-84/26
Resource Relation:
Conference: Symposium on Radioisotope Tracers in Industry and Geophysics, Prague (Czech Republic), 21-25 Nov 1966; Other Information: 4 refs., 12 figs., 1 tab.; Related Information: In: Radioisotope Tracers in Industry and Geophysics. Proceedings of the Symposium on Radioisotope Tracers in Industry and Geophysics| 728 p.
Subject:
07 ISOTOPES AND RADIATION SOURCES; 36 MATERIALS SCIENCE; CATALYSTS; DESIGN; DETECTION; DISTRIBUTION; EFFICIENCY; ISOMERIZATION; LIQUIDS; MIXING; PROPANOLS; PROPYLENE; TESTING; TRACER TECHNIQUES; XYLENES
OSTI ID:
22112135
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M1492069031
Submitting Site:
INIS
Size:
page(s) 393-406
Announcement Date:
Jul 11, 2013

Conference:

Citation Formats

Bullock, R. M., Johnson, P., and Whiston, J. Some Examples of Residence-Time Distribution Studies in Large-Scale Chemical Processes by Using Radiotracer Techniques. IAEA: N. p., 1967. Web.
Bullock, R. M., Johnson, P., & Whiston, J. Some Examples of Residence-Time Distribution Studies in Large-Scale Chemical Processes by Using Radiotracer Techniques. IAEA.
Bullock, R. M., Johnson, P., and Whiston, J. 1967. "Some Examples of Residence-Time Distribution Studies in Large-Scale Chemical Processes by Using Radiotracer Techniques." IAEA.
@misc{etde_22112135,
title = {Some Examples of Residence-Time Distribution Studies in Large-Scale Chemical Processes by Using Radiotracer Techniques}
author = {Bullock, R. M., Johnson, P., and Whiston, J.}
abstractNote = {The application of radiotracers to determine flow patterns in chemical processes is discussed with particular reference to the derivation of design data from model reactors for translation to large-scale units, the study of operating efficiency and design attainment in established plant and the rapid identification of various types of process malfunction. The requirements governing the selection of tracers for various types of media are considered and an example is given of the testing of the behaviour of a typical tracer before use in a particular large-scale process operating at 250 atm and 200 Degree-Sign C. Information which may be derived from flow patterns is discussed including the determination of mixing parameters, gas hold-up in gas/liquid reactions and the detection of channelling and stagnant regions. Practical results and their interpretation are given in relation to an define hydroformylation reaction system, a process for the conversion of propylene to isopropanol, a moving bed catalyst system for the isomerization of xylenes and a three-stage gas-liquid reaction system. The use of mean residence-time data for the detection of leakage between reaction vessels and a heat interchanger system is given as an example of the identification of process malfunction. (author)}
place = {IAEA}
year = {1967}
month = {Jun}
}