Technical Development for the Circulating Fluidized Bed Combustor of firing Korean Low Grade Anthracite Coals (Particle Flow Patterns in a Circulating Fluidized-Bed with an internal Nozzle and a Partition Wall)

한국산 저질무연탄 연소용 순환식유동층 연소로 개발(간막이벽과 내부노즐을 설치한 순환유동층내에서의 유체거동)

A Circulating Fluidized-Bed (CFB) with an internal nozzle and a partition wall was proposed. The technique of fluidization is related to operations first used commercially in the fields of metallurgical and mechanical engineering such as the heat treatment of metals and power station combustors. In the modified CFB, an internal nozzle and a partition wall were additionally set in the main bed. This cold mode CFB apparatus made of acrylic resin; the main bed is 1,500mm high and 100mm in the inner diameter, the internal nozzle is 130mm high and 10mm in the inner diameter, and the partition wall is 7mm thick and 100mm in the diameter. Glass beads of $89{\mu}m$ in the mean diameter were employed as bed materials.