公开(公告)号：US20210060516A1

公开(公告)日：2021-03-04

申请号：US16559368

申请日：2019-09-03

Applicant: UOP LLC

Inventor： Christopher M. Wozniak ,  Xiaodong Liu ,  James T. Wexler ,  Mark W. Mucek

IPC: B01J19/02 ,  C10G69/02 ,  C10G45/58 ,  C22C38/12

Abstract: A process and apparatus for hydroprocessing a biorenewable feedstock involves an advantageous metallurgy. The biorenewable feed stream is hydrotreated in a hydrotreating reactor comprising a stainless steel having a composition of at least about 2 wt-% molybdenum which is sufficiently resistant to acidic corrosion. The hydrotreated biorenewable stream is hydroisomerized in a hydroisomerization reactor comprising a stainless steel having a composition of less than about 2 wt-% molybdenum. Most of the free fatty acids are deoxygenated in the hydrotreating reactor to make water, thus avoiding exposure of downstream equipment to acid attack. The stainless steel of said hydrotreating reactor may have a composition of no more than about 0.02 wt-% carbon.