Exxonmobil Chemical Patents Inc.

Stone & Webster, Inc.

Badger Licensing LLC

Frank Demers

Chung-Ming Chi

Maruti Bhandarkar

Shyh-Yuan Henry Hwang

Richard F Guarino

Dana E Johnson

Kevin J Fallon

Waheed Mukaddam

Henry Hwang

Maruti Vk Balur Bhandarkar

Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.

Production of alkyl aromatic compounds

A method for producing phenol is disclosed which includes oxidizing cumene to form cumene hydroperoxide and acid cleavage to form cumene, phenol, acetone, and various byproducts, including alpha methylstyrene, followed by a subsequent hydrogenation of at least a part of the acetone and substantially all of the alpha methylstyrene.

Hydrogenation of cleavage effluents in phenol production

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Holderness, NH, United States of America

Frank Demers