In-Line Catalytic Purification of Carbon Dioxide Used in Precision Cleaning Applications

Autor:	Michael E. Zorn, John T. Etter, Dean T. Tompkins, Walter A. Zeltner, Marc A. Anderson
Rok vydání:	2012
Předmět:	Lower grade chemistry.chemical_compound Chromatography Chemistry General Chemical Engineering Carbon dioxide Food grade General Chemistry Industrial and Manufacturing Engineering Catalysis Cost savings
Zdroj:	Industrial & Engineering Chemistry Research. 51:2882-2887
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie202402w
Popis:	The use of carbon dioxide (CO2) in precision cleaning applications requires a high-purity feed stream of CO2, which can add considerable cost to the overall process. The ability to purchase and clean a lower grade of CO2 would represent a significant cost savings. In this study, an in-line catalytic purification system was employed to clean two low-purity grades of CO2 to very low contaminant levels at flow rates relevant for full-scale precision cleaning applications (3.63 kg/h or 8 lb/h). A “food” grade of CO2 had an unpurified contaminant concentration of 4.0 ng/g, and a “bone dry” grade had an unpurified contaminant concentration of 4.9 ng/g. After catalytic purification, the food grade contaminant concentration was reduced to 0.14 ng/g (a 97% reduction), and the bone dry grade contaminant concentration was reduced to 0.26 ng/g (a 95% reduction).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b1bbd512ca3c6d4d408b3786182a8949 https://doi.org/10.1021/ie202402w Zobrazit plný text záznamu