Benzene removal from hydrocarbon streams
AssigneeExxon Research & Engineering Co.
InventorsRichard J. Bellows, Gary B. McVicker, Joseph E. Baumgartner, James P. Dennis
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Abstract
A method for the separation of benzene from a hydrocarbon stream, such as a gasoline boiling range stream, which comprises contacting the hydrocarbon stream with an adsorbent capable of selectively adsorbing the benzene from the stream, hydrogenating the adsorbed benzene to cyclohexane, and desorbing the cyclohexane from the adsorbent. The hydrogenation of the benzene to cyclohexane facilitates the removal of the benzene from the adsorbent.
Claims15
A method of substantially removing adsorbed benzene from an adsorbent which comprises converting the adsorbed benzene to cyclohexane, and desorbing the cyclohexane from the adsorbent.
A method for the substantial separation of benzene from a feed mixture comprising benzene and at least one other hydrocarbon, which method comprises contacting the feed mixture with an adsorbent capable of selectively adsorbing benzene from the feed mixture, converting the adsorbed benzene to cyclohexane, and desorbing the cyclohexane from the adsorbent.
A continuous process for the substantial separation of benzene from a feed mixture comprising benzene and at least one other hydrocarbon, which process comprises:
- (i) contacting the feed mixture with an adsorbent capable of selectively adsorbing benzene from the feed mixture;
- (ii) converting the adsorbed benzene to cyclohexane;
- and
- (iii) desorbing the cyclohexane from the adsorbent using as desorbent the feed mixture, the benzene in the feed mixture displacing the cyclohexane from the adsorbent.
Dependencies are inferred from the claim text.