Critical Phenomena in Trickle-Bed Reactors Full article
Conference |
5th International Symposium on Catalysis in Multiphase Reactors & 4th International Symposium on Multifunctional Reactors 15-18 Jun 2005 , Portoroz-Portorose |
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Journal |
Industrial and Engineering Chemistry Research
ISSN: 0888-5885 , E-ISSN: 1520-5045 |
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Output data | Year: 2005, Volume: 44, Number: 25, Pages: 9727-9738 Pages count : 12 DOI: 10.1021/ie050276l | ||||
Tags | EXOTHERMIC REACTION; PHASE; HYDROGENATION; VAPORIZATION; EVAPORATION; TRANSITION; PELLET; VAPOR; MODEL | ||||
Authors |
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Affiliations |
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Funding (2)
1 | Civilian Research and Development Foundation | RU-C1-2581-NO-04 |
2 | Netherlands Organisation for Scientific Research | 047.014.004 |
Abstract:
Thermocouple probing and nuclear magnetic resonance imaging (MRI) method were used to study both heat regimes and liquid distribution under conditions of exothermal hydrogenation reactions proceeding on a catalyst particle and in the trickle bed. The experiments were performed using the model reactions of hydrogenation of α-methylstyrene, octene, and heptene. It was shown that critical phenomena, such as “hot spots” in trickle bed and catalyst particles, multiplicity of steady-state regimes, and hysteresis phenomena, are generated by liquid evaporation and transition of the reaction to the gas-phase mode. The transition is promoted by a number of factors, such as exothermicity of the hydrogenation reaction, presence of dry and partially wetted catalyst particles for liquid superficial velocities lower than 5−6 mm/s, nonuniform distribution of the liquid within the reactor cross section, and phase nonequilibrium in the trickle bed. Multiplicity of the steady-state regimes, hysteresis phenomena, and impact of liquid superficial velocity and catalyst particle size on the onset of critical phenomena were studied experimentally.
Cite:
Kirillov V.A.
, Koptyug I.V.
Critical Phenomena in Trickle-Bed Reactors
Industrial and Engineering Chemistry Research. 2005. V.44. N25. P.9727-9738. DOI: 10.1021/ie050276l WOS Scopus РИНЦ
Critical Phenomena in Trickle-Bed Reactors
Industrial and Engineering Chemistry Research. 2005. V.44. N25. P.9727-9738. DOI: 10.1021/ie050276l WOS Scopus РИНЦ
Dates:
Submitted: | Mar 1, 2005 |
Accepted: | Sep 23, 2005 |
Published online: | Nov 11, 2005 |
Published print: | Dec 1, 2005 |
Identifiers:
Web of science | WOS:000233685400050 |
Scopus | 2-s2.0-29644448064 |
Elibrary | 13491328 |
Chemical Abstracts | 2005:1197937 |
Chemical Abstracts (print) | 144:110495 |
OpenAlex | W1975585032 |