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US 5,446,223 AGranted
Alkylation of organic aromatic compounds
AssigneeChemical Research & Licensing Company
InventorLawrence A. Smith, Jr.
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AssigneeChemical Research & Licensing Company
InventorLawrence A. Smith, Jr.
Estimating the term…
The aging rate of the catalyst in a process for the concurrent alkylation of aromatic with olefin and distillation of reaction components (reactants and products) in a distillation column reactor in a catalyst bed wherein the catalyst also serves as the distillation structure, is retarded by limiting the conversion of olefin in the catalyst bed to about 90 percent. A portion up to and including the entire unreacted aromatic and olefin in the overhead from the distillation column reactor are condensed and fed to a fixed bed alkylation reactor to substantially finish the conversion with a portion of the effluent from the fixed bed reactor recycled thereto to control the olefin content in the fixed bed reactor inlet to less than one volume percent, preferably less than 0.50 volume percent and thereby reduce the aging in that catalyst. A fixed bed transalkylation reactor is used to convert the polysubstituted alkylated aromatic products to mono-substituted alkylated aromatic products.
A process for the alkylation of organic aromatic compounds, comprising the steps of:
A process for the alkylation of organic aromatic compounds with olefin by contacting said aromatic compound and olefin in a distillation column reactor containing a fixed bed acidic catalytic distillation structure in a distillation reaction zone thereby catalytically reacting said aromatic compound and said olefin to produce a first alkylated aromatic product;
A process for the alkylation of organic aromatic compounds comprising:
Dependencies are inferred from the claim text.