Evaluation of an Industrial Absorption Process for Carbon Capture Using K 2 CO 3 Promoted by Boric Acid

Journal of the Brazilian Chemical Society

article

Vasconcelos, Suênia F. de¹  Carneiro, Lucas O.¹  Brito, Romildo P.¹  Brito, Karoline D.¹ 

[1] Universidade Federal de Campina Grande

关键词: carbon capture;    rate-based model;    potassium carbonate;    liquid holdup;    mass transfer;    interfacial area;    synthesis gas;   

DOI  :  10.21577/0103-5053.20220122

学科分类：内科医学

来源: SciELO

【 摘 要 】

Hot potassium carbonate (HPC) process aims to remove the CO2 present on synthesis gas. This removal is done in an absorption process, where takes place the reaction of CO2 with a K2CO3 solution. This reaction is slow and H3BO3 can be used to increase the rate of reaction. The rate-based model is the most suitable way to model the process. This approach uses different correlations to calculate important mass transfer and hydraulic parameters, such as: mass transfer coefficient, interfacial area, and liquid holdup. This paper aims to evaluate the performance of many correlations to represent the HPC process. An automatic procedure was developed to test a high number of equations, using MATLAB and Aspen Plus software. The best set of correlations was found after a comparison with industrial data. Correlations with errors less than 10% for the entire evaluated operating conditions were calculated for mass transfer coefficient and the interfacial area, as well as for liquid holdup.

【 授权许可】

CC BY