Proceeding2562

1269 การประชุมวิชาการระดับชาติมหาวิทยาลัยทักษิณ ครั้งที่ 29 ประจ�ำปี 2562 วิจัยและนวัตกรรมเพื่อการพัฒนาที่ยั่งยืน Conversion of Methane into Hydrogen with Dielectric Barrier Discharge Plasma System at Atmospheric Pressure Yuttaporn Leamkaew 1* , Thawatchai Tepnual 2 and Sompong O-Thong 3 Abstract Introduction : Hydrogen gas is nowadays one of the interesting alternative energies because the combustion of hydrogen gas provides high energy, which is clean and environmentally friendly. The combustion will produce water and heat energy only. Objective : The study aimed to investigate the conversion of methane to hydrogen with dielectric barrier dis- charge plasma cylindrical coaxial at atmospheric pressure. Methods : The experimental study of the conversion of methane to hydrogen was performed with dielectric barrier discharge plasma cylindrical coaxial at atmospheric pressure, with AC high voltage 8 kV and frequency 25 kHz. There were 3 common types of gas substrate; argon, carbon dioxide and air. Gas output was analyzed by Gas Chromatography. Result : The result of study found that the optimum methane conversion was 35.019% when methane mixed with air was entered , whereas the minimum conversion was 1.126% when only Methane was set into the system. The methane conversion could be ordered from the most to the least; CH4 + Air (35.019%) > CH4 + CO2 (31.122%) > CH4 + Ar (2.186%) > CH4 (1.126%) respectively. The maximum hydrogen product of 1.547% was found when CH4 + Ar was input and the minimum of 0.763% when CH4 + Air was entered into the system. The products of hydrogen could be sorted from the maximum to minimum as CH4 + Ar (1.547%) > CH4 (1.05%) > CH4 + CO2 (0.783%) > CH4 + Air (0.763%) respectively. Keywords : plasma discharge at atmospheric pressure, dielectric barrier discharge plasma, conversion of methane into hydrogen