Premium
Continuous Neutralization of NaOH Solution with CO 2 in an Internal‐Loop Airlift Reactor
Author(s) -
Pichler Thomas,
Stoppacher Bernd,
Kaufmann Alexander,
Siebenhofer Matthäus,
Kienberger Marlene
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000319
Subject(s) - airlift , neutralization , volumetric flow rate , chemistry , loop (graph theory) , continuous stirred tank reactor , mass transfer , mass transfer coefficient , analytical chemistry (journal) , phase (matter) , thermodynamics , materials science , chromatography , bioreactor , organic chemistry , physics , antibody , immunology , biology , mathematics , combinatorics
The neutralization of NaOH with CO 2 in a continuously operated airlift reactor with gas flow rates up to 10 NL min −1 and gas phase recycle was investigated. Neutralization experiments were performed at 25 °C and the amount of absorbed CO 2 , as well as the NaOH feed rate, were recorded. The reaction rate was calculated based on the two‐film theory and empirical equations for several parameters. The calculations of the volumetric mass transfer coefficient, the liquid phase circulation velocity, and the gas holdup were experimentally validated. The reaction rate and the process efficiency were modeled with a deviation of 5 %.