Mun Sup Lim

The Study of Model Biogas Catalyst Reforming Using 3D IR Matrix Burner

Global climate changes caused by CO2 emissions are currently debated around the world; green sources of energy are being sought as alternatives to replace fossil fuels. The sustainable use of biogas for energy production does not contribute to CO2 emission and has therefore a high potential to reduce them. Catalytic steam reforming of a model biogas (CH4 : CO2 = 60% : 40%) is investigated to produce H2-rich synthesis gas. The biogas utilized 3D-IR matrix burner in which the surface combustion is applied. The ruthenium catalyst was used inside a reformer. Parametric screening studies were achieved as Steam/Carbon ratio, biogas component ratio, Space velocity and Reformer temperature. When the condition of Steam/Carbon ratio, CH4/CO2 ratio, Space velocity and Refomer temperature were 3.25, 60% : 40%, 14.7 L/g・hr and 550°C respectively, the hydrogen concentration and methane conversion rate were showed maximum values. Under the condition mentioned above, H2 yield, H2/CO ratio, CO selectivity and energy efficiency were 0.65, 2.14, 0.59, 51.29%.

Characteristics of Gasification for a Refused Plastic Fuel

Waste energy conversion to SRF (Solid Refuse Fuel) has the effects not alternative fossil fuel usage but also the reduction of greenhouse gas. But the direct burning of the SRF including a plastic waste generates air pollution problem like soot, dioxin, etc. so that an application of pyrolysis and gasification treatment should be needed. The purpose of this study is to supply a basic thermal data of the pyrolysis gasification characteristics in the plastic-rich SRF which are needed for developing the novel pyrolyser or gasifier. To do so, a bench-scale test rig was newly engineered, and then experiments were achieved for the production characteristics of gas, tar, and char. While SRF sample, gasification air ratio, holding time changed as 2 g, 0.691, 32 min respectively, the H2 1.36%, CH4 2.18%, CO 1.88%, Cl2 15.9 ppm, HCl 6.4 ppm were composed. Also light tar benzene 4.03 g/m, naphthalene 0.39 g/m, anthracene 0.11 g/m, pyrene 0.06 g/m, gravimetric tar 18 g/m, and char 0.29 g was formed.

Development of a Plasma-Dump Combustor for VOC Destruction

Volatile organic compounds (VOCs) are gases with low calorific values produced from the painting or drying process whose stable combustion cannot be ensured by direct combustion. In this study, a novel plasma-dump combustor was proposed to remove the VOCs. The combustor is combined the concept of a plasma burner, a dump combustor and a 3D matrix burner. Therefore, it can achieve high destruction with low input energy and stable flame at low temperature.The toluene was used as a representative VOC. The toluene reduction characteristic was examined according to the total gas feed, toluene concentration, dump injector position, and 3D matrix heat accumulator. The toluene decomposition efficiency was 99.5%, and the energy efficiency was 447.2 g/kWh was at the optimum operating conditions.

Hydrogen Gas Production from Methane Reforming Using Oxygen Enriched Compression Ignition Engine

The purpose of this paper is to investigate the reforming characteristics and maximum operating condition for the hydrogen production by methane reforming using the compression ignition engine induced partial oxidation. An dedicated compression engine used for methane reforming was decided operating range. The partial oxidation reforming was investigated with oxygen enrichment which can improve hydrogen production, compared to general reforming. Parametric screening studies were achieved as ratio, total flow rate, and intake temperature. When the variations of ratio, total flow rate, and intake temperature were 1.24, 208.4 L/min, and , respectively, the maximum operating conditions were produced hydrogen and carbon monoxide. Under the condition mentioned above, synthetic gas were .