Patent ID: 6054041
Filing Date: 2000-04-25
Classification: C10G

Abstract:
A hydroprocessing process which includes a vapor reaction stage and two liquid reaction stages comprises the steps of:(a) reacting a feed comprising a hydrocarbonaceous liquid with hydrogen in a first cocurrent flow liquid reaction stage in the presence of a hydroprocessing catalyst to form a first stage effluent comprising a mixture of a partially hydroprocessed hydrocarbonaceous liquid and a hydrogen-containing hydrocarbonaceous vapor;(b) separating said liquid and vapor effluent;(c) reacting said first stage liquid effluent with fresh hydrogen in the presence of a hydroprocessing catalyst in a second cocurrent flow liquid hydroprocessing reaction stage to produce a mixture of hydroprocessed hydrocarbonaceous vapor and product liquid effluents;(d) separating said liquid and vapor effluents;(e) reacting said first stage vapor effluent with hydrogen in a vapor hydroprocessing reaction stage to produce an effluent comprising hydroprocessed hydrocarbonaceous vapor, wherein said vapor stage reaction hydrogen is provided by unreacted hydrogen in said first stage vapor effluent;(f) cooling said second stage and said vapor stage vapor effluents to condense a portion of said hydroprocessed hydrocarbonaceous vapor as additional product liquid and produce uncondensed, hydrogen-rich vapor, and(g) passing said uncondensed hydrogen-rich vapor to said first stage to provide said first stage and said vapor stage reaction hydrogen.