1-3　酸素吹きガス化に及ぼす炭種の影響

抄録

In slagging gasifiers, the ash flow down the gasifier walls and dra ine the gasifier as a molten slag . The b ehavior of the molten slag depend e on coal type . Coals choosed for slagging gasifiers should thus have an ash fusion temperature below the operating temperature of the gasifier ; thus evaluation of t he ash fusion temperature is important to operate stable the gasifier The estimation of the ash fusion temperature was performed by using Factsage 7.2 that is the thermodynamic equilibrium calculation software. And more the ash viscosity was estimated by Modified Urbain Model or Viscosity Module o f Factsage 7.2 . The equilibrium ash fusion temperatures w ere cal c ulated con s ider ing the equilibrium gas composition for 4 coals. The estimated ash fusion temepratures were different from JIS measurement results. Viscosity Module was good agreement with the ash viscosity measurement results u sing high temperature furnace.