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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。图１１参１１
Annular vortex fluidized bed is characterized by a combustion chamber annular structure, the lower part of the fluidized bed, the upper part of the vortex chamber. A certain amount of secondary air along the vortex combustor height tangential or split into the spray, the fine-grained fuel in the vortex chamber to form a strong spin combustion, improve gas-solid mixing and heat and mass transfer, to extend the fine particles in the furnace Stay time. The annular vortex fluidized bed has a series of advantages such as high combustion efficiency, high desulfurization efficiency, adaptability of coal plant, good load regulation performance and compact structure. It is a practical combustion technology suitable for small and medium-sized industrial boilers. Figure 11 Senate 11