Methods for producing xylenes with limited ethylbenzene production
AssigneeSaudi Arabian Oil Company
InventorsVeera Venkata Ramakrishna Tammana, Ke Zhang, Sohel Shaikh, Essam A. Al-Sayed, Miao Sun
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Abstract
A method for producing one or more of benzene, toluene, or xylene may include contacting a feed stream including C9+ alkylaromatic hydrocarbons with a catalyst mixture to form one or more of benzene, toluene, or xylene. The catalyst mixture may include mesoporous zeolite Beta, ZSM-5 zeolite, one or more active metals, and binder material. The feed stream may include C9+ alkylaromatic hydrocarbons in an amount of at least 10 wt. %. The weight ratio of mesoporous zeolite Beta to ZSM-5 zeolite may be from 2 to 4.
Claims12
A method for producing one or more of benzene, toluene, or xylene, the method comprising:
- contacting a feed stream comprising C9+ alkylaromatic hydrocarbons with a catalyst mixture to form one or more of benzene, toluene, or xylene, the catalyst mixture comprising:
- mesoporous zeolite Beta;
- ZSM-5 zeolite;
- one or more active metals;
- and
- binder material;
- and
- wherein:
- the feed stream is a heavy reformate and comprises at least 20 wt. % toluene;
- the feed stream comprises C9+ alkylaromatic hydrocarbons in an amount of at least 10 wt. %;
- the weight ratio of mesoporous zeolite Beta to ZSM-5 zeolite is from 2 to 4;
- a product stream is formed by the contacting of the feed stream with the catalyst mixture;
- and
- the product stream comprises less than or equal to 0.5 wt. % ethylbenzene.
Dependencies are inferred from the claim text.