Regeneration Performance and Carbon Consumption of Semi-coke and Activated Coke for SO2 and NO Removal

FENG, QI and SONG, DING and TINGYU, ZHU and YANGYANG, GUO and YURAN, LI (2015) Regeneration Performance and Carbon Consumption of Semi-coke and Activated Coke for SO2 and NO Removal. In: Second International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2015, 18 - 19 April, 2015, Rome, Italy.

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To decrease the operating cost of flue gas purification technologies based on carbon-based materials, the adsorption and desorption performances of low-price semi-coke and activated coke were compared for SO2 and NO removal in a simulated flue gas. The functional groups of two adsorbents before and after regeneration were determined by a Fourier transform infrared (FTIR) spectrometer, and were quantitatively tested using temperature programmed desorption (TPD) coupled with FTIR and acid-base titration. The results show that semicoke has higher adsorption amounts (16.2% for SO2 and 38.6% for NO) than activated coke because of its richer basic functional groups and lactone. After regeneration, the adsorption performances of semi-coke decrease because the active functional groups decreased and the micropores increased. Semi-coke has a better regeneration performance than activated coke. Semi-coke has a larger SO2 recovery of 7.2% and a smaller carbon consumption of 12% than activated coke. Semi-coke carbonbased adsorbent could be regenerated at lower temperatures to depress the carbon consumption because the SO2 recovery is only reduced a little.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: functional group; SO2 recovery; adsorption; carbon consumption
Depositing User: Mr. John Steve
Date Deposited: 02 May 2019 11:17
Last Modified: 02 May 2019 11:17

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