Integrated process for the production of benzene and xylenes from heavy aromatics
AssigneeSaudi Arabian Oil Company
InventorsRaed H. Abudawoud, Zhonglin Zhang
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Abstract
Systems and processes for maximizing the production of benzene and para-xylene from heavy reformate are provided. An integrated process and system may include a C9 dealkylation reactor, a transalkylation reactor, and a C10+ dealkylation reactor. The integrated process and system for producing benzene and para-xylene may be configured to additionally produce alkanes in the presence of hydrogen or olefins in the absence of hydrogen. The transalkylation reactor may perform transalkylation of product from the C9 dealkylation reactor and xylene isomerization.
Claims24
A heavy reformate processing system for producing benzene and para-xylene from a heavy reformate, the heavy reformate processing system comprising:
- a reformate splitter operable to receive a feed stream, the feed stream comprising heavy reformate, the reformate splitter further operable to produce benzene, toluene, and a C8+ aromatics product, the C8+ aromatics product provided to a xylene splitter;
- a para-xylene separator operable to receive a C8 aromatic product from the xylene splitter and produce a first xylene product comprising para-xylene and a second xylene product comprising ortho-xylene and meta-xylene;
- a first dealkylation reactor operable to receive a C10+ aromatics product from the xylene splitter and produce the first dealkylation product, the first dealkylation reactor further operable to:
- produce alkanes from the C10+ aromatics product and hydrogen, or
- produce olefins from the C10+ aromatic product in the absence of hydrogen;
- a second dealkylation reactor operable to receive a C9 aromatics product from the xylene separator and produce a second dealkylation product, the second dealkylation reactor further operable to:
- produce alkanes from the C9 aromatics product and hydrogen;
- or
- produce olefins from the C9 aromatic product in the absence of hydrogen a transalkylation reactor operable to receive the second dealkylation product from the second dealkylation reactor and produce the transalkylation product, the transalkylation reactor further operable to:
- produce alkanes from the second dealkylation product and hydrogen;
- or
- produce olefins from the second dealkylation product in the absence of hydrogen.
A method for producing benzene and para-xylene from a heavy reformate, the method comprising:
- receiving a feed stream at a reformate splitter, the feed stream comprising heavy reformate;
- operating the reformate splitter to produce benzene, toluene, and C8+ aromatics from the feed stream;
- operating a xylene splitter to receive the C8+ aromatics and produce C8 aromatics, C9 aromatics, and C10+ aromatics;
- operating apara-xylene separator to receive the C8 aromatics from the xylene splitter and produce a first xylene product comprising para-xylene and a second xylene product comprising ortho-xylene and meta-xylene;
- operating a first dealkylation reactor to receive the C10+ aromatics from the xylene separator and produce the first dealkylation product;
- operating a second dealkylation reactor operable to receive the C9 aromatics from the xylene separator and produce a second dealkylation product;
- and
- operating a transalkylation reactor to receive the second dealkylation product from the second dealkylation reactor and produce the transalkylation product.
Dependencies are inferred from the claim text.