The causes behind breakage of the catalyst are excessive sodium and vanadium content in the feed oil, excessively high regeneration temperature and excessively high steam velocity in riser pipe. 对催化剂的分析表明,催化剂破碎主要由于原料中钠、钒含量超标、再生温度过高和提升管预提蒸汽线速过高所致。
Gas-solid two phase flow in feed injection zone of FCC riser reactors(ⅱ) analytical research 提升管反应器进料混合段内气固两相流动特性(Ⅱ)理论分析
Application of Upside Feed and Underside Return Flow Vertical Double Riser Pipe Heating System in High Rise Building Heating 上供下回双立管供暖系统在高层建筑供暖中的应用
Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall. 受喷嘴区高速射流的影响,喷嘴上方固体颗粒呈向下流动趋势,形成一个诱导回流区域。