초록 ▼

A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are removed from the vapor by contact with process

A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are removed from the vapor by contact with processed liquid effluent derived from one or both reaction stages and, optionally, also liquid recovered from processed vapor. The first and contact stage liquid effluents are passed into the second stage to finish the hydoprocessing. The contact and second stage vapor effluents are cooled to recover additional hydroprocessed product liquid.

대표청구항 ▼

[ What is claimed is:] [1.] A hydroprocessing process for removing at least one impurity from a hydrocarbonaceous feed which comprises the steps of:(a) reacting said feed with hydrogen in a first hydroprocessing reaction stage in the presence of a hydroprocessing catalyst to form a first stage efflu

[ What is claimed is:] [1.] A hydroprocessing process for removing at least one impurity from a hydrocarbonaceous feed which comprises the steps of:(a) reacting said feed with hydrogen in a first hydroprocessing reaction stage in the presence of a hydroprocessing catalyst to form a first stage effluent having a lower impurity content than said feed, said effluent comprising a first stage hydroprocessed hydrocarbonaceous liquid and a vapor which contains hydroprocessed hydrocarbonaceous feed components, wherein both said liquid and vapor effluents contain said impurities, with said impurities in equilibrium between said liquid and vapor effluents;(b) separating said first stage liquid and vapor effluents;(c) contacting said vapor effluent, in a contacting stage, with a hydrocarbonaceous liquid, under conditions such that impurities in said vapor transfer to said liquid, to form a contacting stage effluent comprising a hydrocarbonaceous liquid of increased impurity content and a vapor comprising hydroprocessed hydrocarbonaceous feed components having an impurity content less than that of said first stage vapor effluent, and(d) reacting said first and contacting stage liquid effluents with hydrogen in a second hydroprocessing reaction stage, in the presence of a hydroprocessing catalyst, to form a second stage effluent comprising a hydroprocessed hydrocarbonaceous liquid and a vapor comprising hydroprocessed hydrocarbonaceous feed components, wherein said liquid has an impurity content lower than that in said feed and first stage liquid effluent.