Process and system for cracking a hydrocarbon feed

A process for hydrocracking a hydrocarbon feed, comprising:

• hydrocracking the hydrocarbon feed to produce a first hydrocracking product stream;
• separating the first hydrocracking product stream to form a gas stream and a liquid stream;
• hydrocracking the liquid stream to produce a second hydrocracking product stream;
• separating the second hydrocracking product stream to form a first light stream and a first heavy stream comprising benzene, toluene, xylene, C9+ hydrocarbon, or a combination comprising at least one of the foregoing;
• purifying the gas stream to form a purified gas stream;
• and
• separating the purified gas stream to form a hydrogen stream, C1 stream, C2 stream, C3 stream, C4 stream, C5+ stream, or a combination comprising at least one of the foregoing,
• wherein
• the separating the second hydrocracking product stream comprises absorbing benzene, toluene, xylene, C9+ hydrocarbon, or a combination comprising at least one of the foregoing into an absorbing liquid to form the first heavy stream;
• or
• the step of separating the purified gas stream comprises a cold separation process, and the cold separation process comprises,
• cooling the purified gas stream to form a first cooled stream;
• separating the cooled stream to form a hydrogen and C1 stream and a C2+ stream;
• cooling the hydrogen and C1 stream to form a second cooled stream;
• separating the second cooled stream to form a hydrogen stream and a C1 stream;
• expanding the hydrogen stream to form a cold, low pressure hydrogen stream;
• feeding the cold, low pressure hydrogen stream to the step of cooling the hydrogen and C1 stream;
• and
• compressing the cold, low pressure hydrogen stream.