Raymond L Fletcher

US Patent:

20100298126, Nov 25, 2010

Filed:

Oct 3, 2008

Appl. No.:

12/681319

Inventors:

Elbert Arjan De Graaf - Amsterdam, NL
Daniel Alofs-Gimpel - Wormer, NL
King Yen Yung - Almere, NL
Raymond Paul Fletcher - Houston TX, US
Avelino Corma Canos - Valencia, ES

Assignee:

ALBEMARLE NETHERLANDS B.V. - AMSTERDAM

International Classification:

B01J 27/182
B01J 27/25

US Classification:

502201, 502214

Abstract:

A particulate unsupported superacid catalyst for use in fluid catalytic cracking is provided comprising doped silica which has been doped with from about 1 to about 99 wt %, based on the weight of the catalyst composition, of at least one inorganic oxide dopant selected from the group consisting of rare earth metal oxides, alkaline earth metal oxides, zinc oxide, magnesium oxide, manganese oxide, yttrium oxide, niobium oxide, zirconium oxide and titanium oxide, and wherein the doped silica has been anion-modified by an anion selected from the group consisting of phosphate, tungstate, and sulphate.

US Patent:

20110308620, Dec 22, 2011

Filed:

May 25, 2011

Appl. No.:

13/115955

Inventors:

Martin Evans - Tolland CT, US
Raymond Fletcher - Houston TX, US
Mehdi Allahverdi - Pooler GA, US
Guido Aru - Conifer CO, US
Paul Diddams - Prague, CZ
Xunhua Mo - Savannah GA, US
William Reagan - Montgomery IL, US
Shanthakumar Sithambaram - Pooler GA, US

Assignee:

Intercat, Inc. - Manasquan NJ

International Classification:

F15D 1/00
G01N 37/00

US Classification:

137 1, 73 2801

Abstract:

Collection enhanced materials, flue gas additives, and methods of making the enhanced materials and flue gas additives are provided. In one embodiment, a down stream addition system configured to control material passing through a metering device from a vessel to a gaseous exhaust path extending between a unit and an exhaust flue of the unit is provided. In alternative embodiments, methods are provided for introducing at least one of a flue gas additive and a collection enhanced material to a gaseous exhaust stream exiting a unit; exposing and removing at least a portion of at least one a of flue gas additive and a collection enhanced material from a gaseous exhaust stream exiting a unit prior to entering an exhaust flue; and recycling at least a portion of material removed a from a gaseous exhaust stream exiting a unit back to the gaseous exhaust stream without passing through the unit.