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HYDROCRACKING PROCESS AND SYSTEM INCLUDING SEPARATION OF HEAVY POLY NUCLEAR AROMATICS FROM RECYCLE BY SULFONATION
HYDROCRACKING PROCESS AND SYSTEM INCLUDING SEPARATION OF HEAVY POLY NUCLEAR AROMATICS FROM RECYCLE BY SULFONATION
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机译:加氢裂化过程和系统,包括通过磺化再循环重核聚核芳烃的分离
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摘要
Hydrocracked bottoms fractions are treated to separate HPNA compounds and/or HPNA precursor compounds and produce a reduced-HPNA hydrocracked bottoms fraction effective for recycle, in a configuration of a single-stage hydrocracking reactor, series-flow once through hydrocracking operation, or two -stage hydrocracking operation. A process for separation of HPNA and/or HPNA precursor compounds from a hydrocracked bottoms fraction of a hydroprocessing reaction effluent comprises contacting the hydrocracked bottoms fraction with an effective quantity of a sulfonation agent to produce corresponding sulfonated HPNA compounds and/or sulfonated HPNA precursor compounds, and to form a sulfonated hydrocracked bottoms fraction. The sulfonated hydrocracked bottoms fraction is separated into an HPNA-reduced hydrocracked bottoms portion and a sulfonated HPNA portion. All or a portion of the HPNA-reduced hydrocracked bottoms portion is recycled within the hydrocracking operation.
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