Draft tube for catalyst rejuvenation and distribution

Year	Description
1992	Invention patented by Larry E. Pedrick, Charles H. Mauldin, and William C. Behrmann on December 17th, 1992. Abstract: Catalyst in a slurry phase reactor is rejuvenated and uniformly distributed in said reactor using a substantially vertical draft tube fully immersed in the slurry which utilizes a rejuvenating gas injected substantially near the bottom of the substantially vertical draft tube whereby catalyst near the bottom of the slurry phase reactor is drawn up the draft tube and discharged from the top of the draft tube near the top of the slurry phase in said reactor.
Source: selected by the editor from original sources.

Invention: Draft tube for catalyst rejuvenation and distribution