Martinus J Almering

7982086, Jul 19, 2011

Feb 3, 2009

12/364961

Martinus J. Almering - Pasadena TX, US

Catalytic Distillation Technologies - Pasadena TX

C07C 5/25

585664, 585802, 585809, 203DIG 6, 208347, 208354, 208355, 208358

A process for fractionating isobutene from normal butenes, including: introducing hydrogen and a feed stream comprising isobutene, 1-butene, and 2-butene into a first column including a reaction zone containing a hydroisomerization catalyst operating at a first pressure and concurrently: (i) converting at least a portion of the 1-butene to 2-butene, and (ii) separating isobutene from the 2-butene; recovering a first overheads fraction comprising isobutene from the first column; recovering a first bottoms fraction comprising isobutene, 2-butene, and unreacted 1-butene from the first column; introducing the first bottoms fraction into a top portion of a second column comprising a fractionation column operating at a second pressure lower than the first pressure; separating the first bottoms into a second overheads fraction comprising isobutene and 1-butene and a second bottoms fraction comprising 2-butene; compressing the second overheads fraction; and introducing the compressed second overheads fraction to a lower portion of the first column.

8395002, Mar 12, 2013

Mar 9, 2010

12/720173

Martinus J. Almering - Houston TX, US
Purvis K. Ho - Houston TX, US
Mitchell E. Loescher - Tulsa OK, US
Montri Vichailak - Houston TX, US

Catalytic Distillation Technologies - Pasadena TX

C07C 5/09

585264, 585259, 585804, 585807

A process for recovering benzene, the process including: feeding hydrogen and a hydrocarbon fraction comprising benzene, components lighter than benzene, components heavier than benzene, and diolefins to a catalytic distillation reactor system comprising at least one reaction zone comprising a hydrogenation catalyst; concurrently in the catalytic distillation reactor system: contacting the diolefins and hydrogen in the presence of the hydrogenation catalyst to selectively hydrogenate at least a portion of the diolefins; and fractionating the hydrocarbon fraction to form a fraction comprising benzene and other Chydrocarbons, and a heavies fraction comprising C hydrocarbons; recovering the heavies fraction from the first catalytic distillation reactor system as a bottoms fraction; and withdrawing the fraction comprising benzene and other Chydrocarbons from the catalytic distillation reactor system as a benzene concentrate fraction.

20040000506, Jan 1, 2004

Nov 1, 2002

10/285852

Gary Podrebarac - Houston TX, US
Willibrord Groten - Houston TX, US
Manoj Som - Houston TX, US
Martinus Almering - Houston TX, US

CATALYTIC DISTILLATION TECHNOLOGIES

C10G045/02
C10G065/02

208/211000, 208/212000

A light cracked naphtha is treated to convert mercaptans to sulfides and saturate dienes and then subjected to destructive hydrodesulfurization (HDS) to convert the organic sulfur compounds to hydrogen sulfide. The recombinant mercaptans formed by reaction of hydrogen sulfide and olefins at the outlet of the HDS are generally heavier than the light cracked naphtha is fractionated in admixture with a heavy cracked naphtha. A low sulfur content light cracked naphtha is produced as an overheads and the major portion of the mercaptans leave with heavy cracked naphtha as bottoms. It also advantageous to pass the heavy cracked naphtha through the HDS in admixture with the light cracked naphtha, since the recombinant mercaptans formed with the heavy cracked naphtha olefins (which displace some of the lower mercaptans which would form the light cracked naphtha olefins) will be even higher boiling and easier to separate by fractionation.

20100063334, Mar 11, 2010

Sep 8, 2008

12/206039

Montri Vichailak - Houston TX, US
Purvis K. Ho - Houston TX, US
Martinus J. Almering - Pasadena TX, US
Arvids Judzis, JR. - Pasadena TX, US
Willibrord A. Groten - Pasadena TX, US
Yongqiang Xu - Pasadena TX, US

CATALYTIC DISTILLATION TECHNOLOGIES - Pasadena TX

C07C 7/163

585258

A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other Chydrocarbons, and a heavies fraction comprising C hydrocarbons; and hydrogenating the benzene concentrate fraction to form a hydrocarbon fraction having a reduced benzene concentration.