公开(公告)号：US20180036699A1

公开(公告)日：2018-02-08

申请号：US15228047

申请日：2016-08-04

Applicant: SHELL OIL COMPANY

Inventor： Gary James WELLS ,  Jaafar Salih Ahmad EL-MASRI

IPC: B01J8/00 ,  B01J19/24 ,  B01J8/06

CPC classification number: B01J8/001 ,  B01J8/067 ,  B01J2208/00752 ,  B01J2208/00769 ,  B01J2208/06

Abstract: A method for a selecting a loading pressure drop tolerance specification for a plurality of tubes in a multitubular fixed-bed reactor, wherein the plurality of tubes comprise a packed bed of epoxidation catalyst, the method comprising: defining a first loading pressure drop tolerance range for the plurality of tubes based on a desired maximum variation in outlet oxygen concentration, relative to the mean, for the plurality of tubes; defining a second loading pressure drop tolerance range for the plurality of tubes based on a desired maximum number of tube corrections for the plurality of tubes; and selecting the loading pressure drop tolerance specification for the plurality of tubes such that the entirety of the loading pressure drop tolerance specification falls within the first loading pressure drop tolerance range and the second loading pressure drop tolerance range.