Process for producing xylene
AssigneeToray Industries, Inc.
InventorsRyoji Ichioka, Shinobu Yamakawa, Hirohito Okino
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Abstract
An improved process for producing xylene from feedstock containing C.sub.9 alkyl aromatic hydrocarbons with the aid of a catalyst capable of disproportionation, rearrangement, and dealkylation, wherein said improvement comprises performing the reaction in the presence of an aromatic hydrocarbon having one or more ethyl groups in an amount of 5 to 50 wt %.
Claims20
In an improved process for producing xylene in a reactor from a feedstock containing C.sub.9 alkyl aromatic hydrocarbons with the aid of a catalyst capable of disproportionation, transalkylation, and dealkylation, the improvement comprising reacting said feedstock in the presence of an aromatic hydrocarbon having one or more ethyl groups in an amount of 15 to 50 wt %, based on the weight of all reactants in said reactor, and said catalyst.
In an improved process for producing xylene in a reactor from a feedstock containing C.sub.9 alkyl aromatic hydrocarbons with the aid of a catalyst capable of disproportionation, transalkylation, and dealkylation, the improvement comprising reacting said feedstock in the presence of an aromatic hydrocarbon having one or more ethyl groups in an amount of 15 to 50 wt %, based on the weight of all reactants in said reactor, at 1-6 MPa and 300.degree.-550.degree. C., in the presence of hydrogen and said catalyst, with the WHSV being 0.1-10/hr.
A process for producing xylene comprising:
- supplying a substantially toluene free feedstock containing C.sub.9 alkyl aromatic hydrocarbons to a reaction chamber;
- providing a zeolite catalyst in said reaction chamber;
- supplying an aromatic hydrocarbon having one or more ethyl groups in an amount of 15 to 50 wt %, based on the weight of all reactants in said reaction chamber, to said reaction chamber;
- and
- reacting said feedstock in said reaction chamber so as to produce xylene.
Dependencies are inferred from the claim text.