同轴双锥两级气固快速分离器冷态实验研究

Characteristics of a gas-solid fast separator with two coaxial cones in a concurrent downer reactor

下行循环流化床反应器要求气固分离器具有分离效率高、气相停留时间短、压力损失小、设备磨损小等特点。利用气固二相在惯性上的差别,提出了一种新型同轴双锥两级气固快速分离器,并以FCC(F lu id Catalytic Crack ing)为循环物料对该型分离器的分离特性进行了研究。结果表明,同轴双锥两级气固分离器的分离效率在98%以上,气固分离器的压力损失在100 Pa以下,设备磨损小,能够满足下行循环流化床反应器的要求。

New kind of gas-solid fast separator with high separating efficiency, short gas resident time, low pressure loss and long life is urgently needed to couple with concurrent downer reactor. To meet this demand, a new type of gas-solid fast separator with two coaxial cones was proposed. The separating characteristics of the new proposed separator were investigated in a cold model of concurrent downer reactor by using fluid catalytic cracking （FCC） as circulating particles. The results indicate that the separating efficiency is more than 98%, the pressure drop of the separator is less than 100 Pa, and the abrasion is very little.