Biomass Gasificatoin Characteristics for Power and Hydrogen

In this study, the optimal gasification operating conditions were determined in the fluidized bed gasifier system. Syngas, whose main components are hydrogen and carbon monoxide, is produced from unused wood-based biomass through thermo-chemical energy conversion process, and tar and dust are removed from the syngas through refining technology to be used for engine power generation or boiler co-firing. Unused biomass, such as branches and roots, which are simply thrown away in Korea, is recognized as a resource, and a lot of research is being conducted with interest as a supply fuel for gasification, cogeneration plants, and boilers that produce heat and electricity. In addition, since it is produced in Korea, it is easy to supply and demand unused biomass, and when it is formed into pellets and used, there is an advantage that it can be used as a fuel without deformation in the existing feed supply system. The cumulative time of long-term operation was 2,725 hours, and in normal operation, the capacity was 8.7 MWth, the minimum load was 5.5 MWth, and the maximum load was 12.3 MWth. The calorific value of syngas was 1,388 kcal/Nm³ and the cold gas efficiency was 65.7% and the tar content in syngas was 21 mg/Nm³. The syngas power generation efficiency was 31% and the overall system thermal efficiency was 88%.