Young Nam Chun  Eun Hyuk Kim

Vol. 31,  No. 1, pp. 33-42, Mar.  2025
10.7464/ksct.2025.31.1.33

Biogas Microwave reforming Biochar Low-carbon biofuel Carbon capture utilization (CCU)

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A new type of continuous microwave reformer was developed and high-quality reforming energy conversion characteristics were studied in order to solve this problem and the results are as follows; The reforming conversion rate was improved only when the residence time of biogas in the microwave carbide bed is sufficiently secured since the amount of biogas supplied is small, biogas is supplied in an appropriate ratio to eliminate the problem of carbon active layer failure, and steam is supplied in an appropriate amount to increase the cleaning effect and the temperature increase rate of the receptor layer was increased by supplying a portion of SIC to the carbon receptor from the microwave receptor. The optimal operating conditions of the microwave reformer are gas supply amount 10 L/min, reforming temperature 900oC, biogas CH4 60% : CO2 40%, steam supply 10 mL/min, receptor biochar 75% : SiC 25%, CH4 conversion rate and CO2 conversion rate are 96.6%, respectively, 96.7%, gas calorific value of 11.53 MJ/Nm3 and H2 selectivity of 72.2, making it possible to produce low-carbon, high-quality biofuel with high hydrogen yield.