Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube

The bubble columns are widely used as a two or three phase reactor in industrial chemical process such as absorption, biochemical reactions, coal liquefaction, etc. To design such a column, two main parameters should be taken in consideration, the gas hold-up (), and the liquid phase mass tran...

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Autor principal:	Ali Abdul-Rahman N. Jasim
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2009
Materias:	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/9142b82a59714c9ebb237f7cb9a4ccc7
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spelling	oai:doaj.org-article:9142b82a59714c9ebb237f7cb9a4ccc72021-12-02T08:14:20ZEffect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube1818-11712312-0789https://doaj.org/article/9142b82a59714c9ebb237f7cb9a4ccc72009-06-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/555https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 The bubble columns are widely used as a two or three phase reactor in industrial chemical process such as absorption, biochemical reactions, coal liquefaction, etc. To design such a column, two main parameters should be taken in consideration, the gas hold-up (), and the liquid phase mass transfer coefficient KLa. The study includes the effect of gas velocity and the addition of alcohols on gas hold-up and mass transfer coefficient in bubble column with draught tube when the length of the column is 1.5m and the ratio of the draught tube diameter to the column diameter equals 0.5 and the air dispersion into the base of the draught tube using a multi hole tuyere is equivalent to a diameter of 0.15 mm and has a free sectional distributor area of 61%. Water and three aqueous solutions of 10% concentration methanol, ethanol and isopropanol, were used as the liquid phase. The various gas velocity (0.01-0.1) meter/sec are used and the results were compared in case of using water only without the addition of alcohols. From experimental observations, and KLa increase with increasing gas velocity and with the coalescence inhibition of liquid. Ali Abdul-Rahman N. JasimAl-Khwarizmi College of Engineering – University of BaghdadarticleChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 5, Iss 2 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Ali Abdul-Rahman N. Jasim Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
description	The bubble columns are widely used as a two or three phase reactor in industrial chemical process such as absorption, biochemical reactions, coal liquefaction, etc. To design such a column, two main parameters should be taken in consideration, the gas hold-up (), and the liquid phase mass transfer coefficient KLa. The study includes the effect of gas velocity and the addition of alcohols on gas hold-up and mass transfer coefficient in bubble column with draught tube when the length of the column is 1.5m and the ratio of the draught tube diameter to the column diameter equals 0.5 and the air dispersion into the base of the draught tube using a multi hole tuyere is equivalent to a diameter of 0.15 mm and has a free sectional distributor area of 61%. Water and three aqueous solutions of 10% concentration methanol, ethanol and isopropanol, were used as the liquid phase. The various gas velocity (0.01-0.1) meter/sec are used and the results were compared in case of using water only without the addition of alcohols. From experimental observations, and KLa increase with increasing gas velocity and with the coalescence inhibition of liquid.
format	article
author	Ali Abdul-Rahman N. Jasim
author_facet	Ali Abdul-Rahman N. Jasim
author_sort	Ali Abdul-Rahman N. Jasim
title	Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
title_short	Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
title_full	Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
title_fullStr	Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
title_full_unstemmed	Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube
title_sort	effect of adding alcohols and gas velocity on gas hold up and mass transfer coefficient in bubble columns with draught tube
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2009
url	https://doaj.org/article/9142b82a59714c9ebb237f7cb9a4ccc7
work_keys_str_mv	AT aliabdulrahmannjasim effectofaddingalcoholsandgasvelocityongasholdupandmasstransfercoefficientinbubblecolumnswithdraughttube
_version_	1718398614002204672

Effect of Adding Alcohols and Gas Velocity on Gas Hold up and Mass Transfer Coefficient in Bubble Columns with Draught Tube

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