UPGRADING DIENE-CONTAINING HYDROCARBONS

摘要

A fluidized bed process for upgrading a diene containing hydrocarbon feed by adding cool feed to relatively hot catalyst. Preferably an olefinic feed with some C4-C6 diene component is sprayed as a liquid into a fluidized catalyst bed in a lower portion thereof and rapidly atomized and vaporized. The feed is converted to heavier hydrocarbons. Reaction severity preferably is controlled by adjusting catalyst acidity, reactor temperature and/or residence time to produce effluent containing propane:propene in the ratio of 0.2:1 to 200:1. A predominantly liquid product is recovered rich in olefins and/or aromatics.