旋风分离器结构改进的研究现状和发展趋势

Investigation Status and Development Direction of Cyclone's Geometry Improvement

对工业上普遍应用的颗粒分离设备——旋风分离器结构改进(包括进口、出口、锥体及排尘结构)的研究现状进行了回顾。在此基础上,提出了旋风分离器结构改进的发展趋势,即:由于进口区域和排尘结构对于颗粒的分离至关重要,因此有必要对这部分结构进行深入研究;为了进一步改善旋风分离器的分离性能,除了利用离心力外还需结合其它的除尘机理;为了降低研究成本可以采用计算流体动力学技术来优化旋风分离器结构。

In order to improve combustion of fine coal particles in CFB, optimum design scheme of mixing them with hot air to preheat and to burn them in added combustor is suggested which can supply enough air for fine coal particles to burn completely. The scheme can optimize oxygen profile in the furnace of CFB and minimize dallied-burn phenomena.