AM-98-59 XPRESS: THE FIRST TRUE EX-SITU PRE-SULFIDING PROCESS

Description:

TRICAT has introduced the first technology to truly pre-sulfide hydroprocessing catalyst prior to loading the catalyst into the unit. The catalyst is passivated against self-heating, and can be loaded in air into the hydroprocessing unit. Unit start-up is greatly simplified and shortened with no exotherms or waterliberating reactions. Initial commercial tests have confirmed that catalysts presulfided via this new process, called "XpresS", experience no exotherm during start-up. Laboratory activity testing of the XpresS pre-sulfided catalysts has shown that the pre-sulfided catalyst is as active as catalysts sulfided in-situ using sulfiding chemicals.