Gas hold-up and mass transfer in a pilot scale bubble column with and without internals

Autor:	Onkar N. Manjrekar, Milorad P. Dudukovic, Mohamed E. Hamed
Rok vydání:	2018
Předmět:	Mass transfer coefficient Exothermic reaction Work (thermodynamics) Bubble column Materials science General Chemical Engineering Bubble Pilot scale 02 engineering and technology General Chemistry Mechanics 021001 nanoscience & nanotechnology Physics::Fluid Dynamics 020401 chemical engineering Mass transfer 0204 chemical engineering 0210 nano-technology Astrophysics::Galaxy Astrophysics Syngas
Zdroj:	Chemical Engineering Research and Design. 135:166-174
ISSN:	0263-8762
Popis:	Bubble columns are the reactors of choice for conversion of synthesis gas to liquid fuels (F–T synthesis). The F–T synthesis is an exothermic reaction and cooling internals are installed in the bubble columns to remove the heat generated in the reaction. The presence of the internals affects both the gas and liquid flow patterns in bubble column. This change is expected to reflect on the volumetric mass transfer coefficient. In this work, the impact of vertical cooling internals on overall gas hold-up and volumetric mass transfer coefficients is evaluated on 45 cm diameter pilot scale bubble column and 19 cm diameter lab scale bubble column. It was found that in presence of internals the gas hold-up in both the columns was increased, however no significant impact of presence of internals on volumetric mass transfer coefficient was observed. The gas hold-up and volumetric mass transfer coefficients evaluated in this work are compared with prediction from existing correlations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fb57d88a5c518b244bd72a14a4816df6 https://doi.org/10.1016/j.cherd.2018.05.008 Zobrazit plný text záznamu Full Text from ScienceDirect Plný text ve formátu HTML
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