G0601-8-1 Ash deposition in oxy-fuel coal combustion

Abstract

Ash deposition characteristics in oxy-fuel combustion were investigated by using the portable device for monitoring ash deposition installed in the combustion test facility. The ash deposition tests and ash deposit analyses were conducted for two types of bituminous coal with different ash components. In comparison to air combustion tests, the result was obtained that the ash particle shape and size had no difference between oxy-fuel and air combustion. The distribution of metal element in ash for oxy-fuel combustion was almost same to air combustion. The results show that ash deposits properties in oxy-fuel combustion are equal to those in air combustion in bituminous coal firing.