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为了实现在不大的燃烧空间内同时组织燃料燃尽与灰渣分离,旋风燃烧方式无疑是可供选择的最佳方案,但并非所有旋风燃烧室都是成功的,关键是燃烧室内流场结构必须合理组织。东南大学热能工程研究所于80年代初建立了一台JS-2型液态排渣燃煤燃烧室.燃烧室采用轴向混风式旋流器供粉送风,参见图1.曾经对此燃烧室做了大量冷、热态试验.热态试验发现.液态排渣率不够高(最高值为68.8％).冷模试验发现,燃烧室前段气流运动类似于组合涡,分离效率不高;中、后段气流呈抛物涡
In order to realize the separation of fuel burn-out and ash separation in a small combustion space, the cyclone combustion method is undoubtedly the best alternative, but not all cyclone chambers are successful, the key is the structure of the flow field in the combustion chamber Must be organized properly. Institute of Thermal Energy Engineering of Southeast University in the early 1980s to establish a JS-2 type liquid slag burning coal combustion chamber axial mixed cyclone powder supply air, see Figure 1. Once the combustion A large number of cold and hot tests were done in the hot chamber.It was found that the liquid slag removal rate was not high enough (the highest value was 68.8%). The cold mode test showed that the gas flow in the front part of the combustion chamber was similar to the combined vortex and the separation efficiency was not high. , The rear section of the air is parabolic vortex