Abstract
Microwave energy was used to regenerate the NO x saturated char samples. It was found that the temperature of gas produced from microwave regenerations was close to the room temperature, and CO and CO 2 were released approximately 10 seconds after microwave energy was applied. These observations suggest that the sites occupied by NO x may absorb more microwave energy than pure char. Consequently, these adsorption sites heat up rapidly and may turn into hot spots in a very short time. The reduction reactions of adsorbed NO x by carbon takes place at these hot spots. The NO x are adsorbed on char in the forms of NO 2 and HNO 3 when moisture and oxygen are present in the feed gas. This study shows that the higher percentage of HNO 3 in the adsorbed NO x results in higher temperatures of product gas and hence higher reduction efficiency of the adsorbed NO x. Therefore, it is inferred that the sites occupied by HNO 3 may absorb more microwave energy than those by NO 2. Up to 90% of the adsorbed NO x was reduced in this microwave regeneration process.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.