公开(公告)号：US06383965B1

公开(公告)日：2002-05-07

申请号：US09508158

申请日：2000-05-12

Applicant: Hengbo Xu

Inventor： Hengbo Xu

IPC: B01J2034

CPC classification number: B01J29/90

Abstract: A process for regenerating spent molecular sieve catalysts from a fluidized catalytic cracking unit in an oil refinery with high temperature flue gas from a second group of cyclones with the spent catalyst in a first riser regenerator to form a mixture of a half-regenerated catalyst and flue gas, separating the half-regenerated catalyst from the mixture formed in the previous step in a first group of cyclones, mixing the half-regenerated catalyst from the first group of cyclones with a sufficient amount of air for burning off coke on the spent catalyst in a second riser regenerator to form a mixture of high-temperature flue gas and a regenerator catalyst, separating the regenerated catalyst formed from the preceding step from the mixture in the second group of cyclones and recovering the surplus heat from the regenerated catalyst from the second group of cyclones by a regenerated catalyst cooler.

Abstract translation: 一种从炼油厂中的流化催化裂化装置再生废分子筛催化剂的方法，其中第二组旋风分离器的高温烟道气与废催化剂在第一提升管再生器中形成半再生催化剂和烟道的混合物 气体，将半再生催化剂与前述步骤中形成的混合物分离在第一组旋风分离器中，将来自第一组旋风分离器的半再生催化剂与足够量的空气混合以将废催化剂上的焦炭烧掉 第二提升管再生器以形成高温烟道气和再生器​​催化剂的混合物，将由前述步骤形成的再生催化剂与第二组旋风分离器中的混合物分离，并从第二组中回收再生催化剂的剩余热量 的再生催化剂冷却器。