Patent ID: 6036844
Filing Date: 2000-03-14
Classification: C10G

Abstract:
A hydroprocessing process which includes two liquid and one vapor reaction stages all in a single reaction vessel and which comprises the steps of:(a) reacting a hydrocarbonaceous feed comprising a mixture of liquid and vapor with hydrogen in a first hydroprocessing liquid reaction stage in the presence of a hydroprocessing catalyst to form a first stage effluent comprising a partially hydroprocessed hydrocarbonaceous liquid and a hydrocarbonaceous vapor which contains unreacted hydrogen, wherein said feed vapor comprises a second stage hydrocarbonaceous vapor effluent which contains unreacted hydrogen in an amount sufficient to provide at least a portion of said hydrogen for said first reaction stage and for said vapor reaction stage;(b) separating said first stage liquid and vapor effluents;(c) reacting said first stage liquid effluent with hydrogen in the presence of a hydroprocessing catalyst in said second hydroprocessing liquid reaction stage to produce a second stage effluent comprising a hydroprocessed hydrocarbonaceous product liquid and a hydrocarbonaceous vapor, said vapor containing unreacted hydrogen, and wherein said second stage reaction hydrogen is provided by fresh hydrogen or a hydrogen-containing treat gas;(d) separating said second stage liquid and vapor effluents and recovering said hydroprocessed product liquid;(e) passing said separated second stage vapor effluent into said first stage;(f) passing said separated, hydrogen-containing first stage vapor effluent into said vapor hydroprocessing stage, and(g) reacting said first stage hydrocarbonaceous vapor effluent with hydrogen in said vapor in the presence of a hydroprocessing catalyst in said vapor reaction stage to form a hydroprocessed hydrocarbonaceous vapor, wherein at least a portion of said hydrogen for said reaction is provided by said unreacted hydrogen in said first stage vapor effluent.