The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2006
Filed:
Jan. 24, 2001
Simon Hamper, Lake Jackson, TX (US);
William M. Castor, Lake Jackson, TX (US);
Richard A. Pierce, Lake Jackson, TX (US);
Simon Hamper, Lake Jackson, TX (US);
William M. Castor, Lake Jackson, TX (US);
Richard A. Pierce, Lake Jackson, TX (US);
Dow Global Technologies Inc., Midland, MI (US);
Abstract
An integrated process of preparing a Calkenyl-substituted aromatic compound using a Caromatic compound and a Calkane as raw materials. The process involves feeding a Calkane, for example ethane, and a Calkyl-substituted aromatic compound, for example ethylbenzene, to a dehydrogenation reactor for concurrent dehydrogenation to a Calkene, for example ethylene, and a Calkenyl-substituted aromatic compound, for example stryrene; separating the dehydrogenation effluent to recover a gaseous stream containing alkene, hydrogen, and alkane, and to recover the aromatics with high efficiency; feeding the gas stream and a Caromatic compound to an alkylation reactor to obtain the corresponding Calkyl-substituted aromatic compound, which is recycled to the dehydrogenation reactor; subjecting the alkylation unit vent stream containing alkane and hydrogen to a separation step to recover alkane, which is recycled to the dehydrogenation unit; hydrogen, which is recovered at 99% chemical grade purity and energy.