高温高压旋风分离器流场模拟及性能试验

摘要

提出一种圆形径向进口、筒体段扩径的拱顶旋风分离器新结构:并与PV型分离器进行了流场和分离性能对比.结果表明:在相同处理气量下,新型分离器外旋流区切向速度显著大于PV型,中心涡核区轴向速度小于PV型；用中位粒径为9μm的滑石粉进行冷模试验,新型旋风分离器分离效率比PV型高约1％:新型旋风分离器结构强度和分离性能优良,适合高温、高压的工况下应用.%A new type cyclone with round gas entrance connected directly to the cylinder of expanded diameter and vault top was designed and constructed. The flow field simulation and contrast cold performance tests were conducted to compare the two type cyclones. The simulation results indicated that the tangential velocity in the outer vortex region of the new type cyclone was obviously higher than that inside PV cyclone and axial velocity inside the inner upward vortex region was lower. The separation efficiency measured by talc powders in median size of 9 pin was approximately 1% higher man that of PV cyclone. These comparisons suggested that the new type cyclone was suitable for using in the high temperature and pressure environments.