Regenerator for reducing dead zone catalyst

Abstract

A regenerator for reducing a dead zone catalyst mainly includes a the catalyst buffer zone, a first-stage burning zone, a second-stage burning zone, an oxychlorination zone and a roasting zone, a catalyst buffer zone support bed and a first-stage burning zone support bed which are positioned at the top of the regenerator are respectively formed by a plurality of conical funnels, the catalyst enters the buffer zone from a feeding hole, goes through the conical funnels, and enters the first-stage burning zone from a convey tube by its own gravity, and the obtained catalyst goes through the conical funnels and enters the second-stage burning zone from the convey tube by its own gravity.. The catalyst regenerator disclosed in the invention avoids the formation of the dead zone of the catalyst, avoids the formation of white dwarf balls or high carbon agents of the catalyst, saves the catalyst, reduces the processing cost of the catalyst, shortens the retention time of the catalyst and makes blanking smooth.

Description

technical field [0001] The invention relates to a catalyst regenerator for reducing dead zone, in particular to a regenerator of a continuous catalytic reforming device for petroleum processing. Background technique [0002] Catalytic reforming is an important process of petroleum secondary processing, and it is a catalytic reaction process aimed at producing high-octane gasoline components and aromatics. Uninterrupted catalyst delivery is the key to continuous reforming reaction. The reforming regenerator is an important equipment of the reforming unit and the core equipment of the whole reforming and regeneration part. Its main features are complex structure and compact internal structure assembly. The catalyst regeneration process is a process of slowly burning off the carbon deposits on the surface of the catalyst with nitrogen containing a small amount of oxygen under a certain pressure. In the regenerator, the catalyst flows through the first-stage and second-stage ch...

AI Technical Summary

Problems solved by technology

[0004] The regenerator operates in a high-temperature environment, and each zone has strict requirements on oxygen content control. If the oxygen content exceeds the standard, local overheating is prone to occur, and the internal components of the regenerator are prone to deformation and damage

In the process of shutdown and unloading, there are always more dead zone catalysts, especially in the buffer zone of the regenerator, first-stage charred, and second-stage charred support beds. There are always 5% to 10% of dead zone catalysts, which form white after high temperature sintering Dwarf balls or bright black high-carbon balls cannot be reused after being cleaned and discharged. In addition, the reforming catalyst is a precious metal catalyst, which is extremely expensive, causing great waste and increasing the processing cost.

Images