Patent ID: 8158069
Filing Date: 2012-04-17
Classification: B01J,C10G

Abstract:
1. An apparatus for producing diesel comprising: a make-up hydrogen line for carrying a make-up hydrogen stream; a first compressor in communication with said make-up hydrogen line for compressing said make-up hydrogen stream to provide a first compressed make-up hydrogen stream; a split in communication with said first compressor for splitting said first compressed make-up hydrogen stream into a first portion in a first split line and a second portion comprising a second hydroprocessing hydrogen stream in a second split line; a second compressor in communication with said first split line for compressing said first portion of said first compressed make-up hydrogen stream to provide a second compressed make-up hydrogen stream in a second compressed make-up hydrogen line; a hydrocracking reactor in communication with said first split line for hydrocracking a hydrocarbon stream to produce a diesel stream; a hydrotreating reactor in communication with said second split line and said hydrocracking reactor for hydrotreating said diesel stream; and a cold separator in communication with said hydrotreating reactor for separating a second hydroprocessing effluent stream into a vaporous second hydroprocessing effluent stream comprising hydrogen in an overhead line and a liquid second hydroprocessing effluent stream in a bottoms line, wherein said second compressor is in communication with said overhead line at a junction on said second split line.