Chevron Phillips Chemical Company LP

Chevron Philips Chemical Company, LP

Cori A Demmelmaier-Chang

Ryan W Snell

Vincent D McGahee

Joseph Bergmeister, Iii

Theresa E Feltes

Mark L Hlavinka

Daniel M Hasenberg

Scott G Morrison

Scott H Brown

Gabriela Alvez-Manoli

Sikander Hakim

Gabriela Alvez

Steven Lim

This disclosure provides processes for reforming hydrocarbons by using a series of adiabatic reactors and catalysts, in which the catalyst(s) in at least one front or upstream catalyst bed or reactor includes a higher fluoride concentration, higher chloride concentration, or both than the respective halide concentrations in the catalysts in one or more downstream catalyst beds or reactors, which has been unexpectedly discovered to extend the useful life and/or the selectivity of the catalyst system.

Use of high halide-containing catalyst in front reactors to extend the life and selectivity of reforming catalyst

Depolymerization processes and systems for converting polyolefin waste and other waste plastic to hydrocarbons, specifically liquid and gaseous depolymerization reaction products. A depolymerization or catalytic pyrolysis process can be conducted on a process feed which includes a polyolefin waste and a hydrocarbon co-feed under depolymerization conditions, including contacting the reactor feed with a depolymerization catalyst such as a zeolite-based catalyst. The resulting reactor effluent subsequently can be used as feeds or co-feeds for making circular products such as circular ethylene and circular polyethylene.

Catalyzed depolymerization of a chemically complex feedstock

Spent aromatization catalysts containing a transition metal and a catalyst support are selectively poisoned in the disclosed reforming methods, resulting in improvements in overall aromatics yield and selectivity.

Selective poisoning of aromatization catalysts to increase catalyst activity and selectivity

The present invention discloses aromatization reactor vessels with hydrogen membrane tubes, and associated aromatization reactor vessel systems. Also disclosed are processes for conducting aromatization reactions utilizing these reactor vessels and systems.

Aromatization reactors with hydrogen removal and related reactor systems

Growing community of inventors

Houston, TX, United States of America

Cori A Demmelmaier-Chang