Abstract
The char which removed 70%∿95% of the chlorine by the thermal cracking of municipal waste at 400∿450℃ is burned in a fluidized bed having a superheater made from ordinary low cost tubing and electrical power can be generated with a 30% efficiency by recovering superheated steam (80ata, 500℃). At the same time, the cracked gas is burned with air in an ash melted of the vertical swirling type, in which ash can be melted continuously at 1300∿1500℃. The slag from the melted ash in a number of ways. These processes occur when there is more than 1500 kcal/kg of LHV of waste. This system is compacted with a low excess air ratio (1.2∿1.3), and pollutant emissions at the outlet of the furnace are reduced.
