摘要
环形旋涡流化床的特点是燃烧室为环形结构，下部为流化床，上部为旋涡燃烧室。一定数量的二次风沿旋涡燃烧室高度切向或割向分级喷入，使细颗粒燃料在旋涡燃烧室形成强旋燃烧，提高气固混合和传热传质，延长细颗粒在炉内的停留时间。环形旋涡流化床具有燃烧效率和脱硫效率高，煤种适应性厂，负荷调节性能好，结构紧凑等一系列优点，是一种适用于中小型工业锅炉的实用燃烧技术。
Abstract An annular vortexing fluidized bed is featured by the annular construction of its combustion chamber with a fluidized bed at the bottom and a vortex chamber in the upper part. Secondary air is tangentially or cross-wise injected into the vortex chamber at different levels and stages, so that the fuel granules are subjected to a strong swirling combustion which intensifies gas-solid mixing,heat and mass tranfer, while simultaneously lengthening,the granule's tarry in the furnace. Annular vortexing fluidized beds have the advantage of high combustion and desulfuration efficiency, fuel firing flelibility, good turn-down capability and compactness in structure.This is a combustion technology suitable for smaller and middle sized industri boilers
出处
《动力工程》
CSCD
1996年第5期15-21,共7页
Power Engineering
