Abstract
In this research, kinetics and absorption rate of CO2 were studied using partially carbonated ammonia solutions. A correlation was proposed to calculate CO2 absorption rate based on two dimensionless parameters: conversion film parameter and carbonation ratio. Absorption rate experiments have been performed employing a laboratory absorption packed column. More than 60 items of experimental data were used for obtaining the correlation parameters. In the experiments, total ammonia concentration range was 30 to 750 (mol · m−3), carbonation ratio range was 0.22 to 0.785, and CO2 partial pressure in the gas mixture was 10, 14, or 18 (kPa). A comparison of the predictions indicated that the proposed correlation was more accurate than other correlations reported in the literature.
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