公开(公告)号：US4849091A

公开(公告)日：1989-07-18

申请号：US182812

申请日：1988-04-18

申请人： Carlos A. Cabrera ,  Daniel N. Myers ,  Harold U. Hammershaimb

发明人： Carlos A. Cabrera ,  Daniel N. Myers ,  Harold U. Hammershaimb

IPC分类号： C10G11/18

CPC分类号： C10G11/182 ,  Y10S208/01

摘要： FCC catalyst is regenerated in a process providing increased coke-burning capacity without additional heat evolution or air consumption. The process uses a two-stage regeneration arrangement providing initial coke combustion in a low catalyst density-high efficiency contact zone followed by substantial separation of catalyst and regeneration gas and complete regeneration of catalyst particles in a dense bed regeneration zone. Catalyst and gas flow cocurrent prior to this separation but flow countercurrent after the separation. An effective control scheme for regulating oxygen addition to the final zone is also disclosed. This process is applicable to FCC operations for conventional and residual feedstocks.

摘要翻译： FCC催化剂在提供增加的焦炭燃烧能力的过程中再生，而没有额外的放热或空气消耗。 该方法使用两级再生装置，其在低催化剂密度 - 高效率接触区域中提供初始焦炭燃烧，随后基本上分离催化剂和再生气体，并在致密床再生区中完全催化剂颗粒再生。 催化剂和气流在分离前并流，但在分离后逆流。 还公开了一种用于调节最终区域的氧气添加的有效控制方案。 该方法适用于常规和残留原料的FCC操作。