THERMAL DECOMPOSITION/GASIFICATION SYSTEM FOR WASTE

摘要

PROBLEM TO BE SOLVED: To reduce the size of a thermal decomposition furnace by shortening the drying process at the time of thermally decomposing and gasifying a waste. SOLUTION: An external heating rotary kiln type thermal decomposition furnace 1 is divided into front and rear stages. The front stage part of the thermal decomposition furnace 1 serves as a drying section 1a employing steam 14 as heat source whereas the rear stage part serves as a thermal decomposition section 1b employing high temperature gas 10 as heat source. A waste 6 is dried at the drying section 16 by transmitting heat of condensation through the steam 14 and then thermally decomposed at the thermal decomposition section 1b by the high temperature gas 10. Thermal decomposition gas thus produced is transferred downstream.