Naphtha hydrogenation process: raw oil mixing; feed rate cannot be increased
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In the crude benzene hydrogenation process, hydrogenation is currently carried out using a mixed feedstock, which consists of four types of materials: crude benzene, mixed aromatics, No. 1 light oil, and coking light oil. At present, crude benzene is mixed with mixed aromatics in specific proportions before being fed into the mixing tank. But why can’t the amount of crude benzene fed into the mixing tank be increased? I’m a newcomer and would appreciate some guidance from those with more experience – what are the reasons?
Possible reasons: 1. Clogged filter before the pump； After being left to settle, the fine slag particles in crude benzene precipitate and enter the pipelines and filters, causing blockages in those pipelines or filters. 2. After the materials are mixed, some of the olefins undergo slow polymerization and adhere to the inside of the pipelines, resulting in partial blockages there ； The pump impeller is partially blocked