Leonce Francis Castagnos, Age 82613 N Dayflower Dr, Montgomery, TX 77316

7682501, Mar 23, 2010

Dec 23, 2004

11/021274

Dalip S Soni - Houston TX, US
Leonce F Castagnos - Montgomery TX, US

ABB Lummus Global, Inc. - Bloomfield NJ

C10G 11/00

208113, 208153, 208157

An apparatus and method for processing different feeds in a fluid catalytic cracking unit are disclosed which result in improved yields of C, Cand gasoline range hydrocarbons as compared to conventional systems. The process comprises injecting a main hydrocarbon feed into a catalyst-containing riser reactor through a plurality of main feed injectors, and injecting a light hydrocarbon feed into the riser reactor at a location upstream from the main feed injectors and downstream from a control valve such as a regenerated catalyst slide valve, the light feed being injected in a region having a high density of catalyst particles. The light feed is injected in a dispersed way such the amount of feed injected corresponds to the density of catalyst particles at that particular point, with greater amounts of feed being injected at locations having a large number of catalyst particles. Also, a heavy hydrocarbon feed or a heavy recycle stream from the same FCC unit can be injected at the same elevation as the main feed injectors but through separate injectors.

2004010, May 27, 2004

Nov 25, 2002

10/303452

Paul Marchant - Houston TX, US
Dalip Soni - Houston TX, US
Leonce Castagnos - Montgomery TX, US

B01J008/18

422/144000

An apparatus for the countercurrent contacting of a gas and downflowing solid particles includes a housing and a plurality of baffles positioned within the housing. The baffles are arranged in at least first and second vertically spaced levels in successively lower position, each of the first and second levels including a row of at least two baffles oriented parallel to one another and inclined from horizontal so as to facilitate movement of the solid particles and provide the maximum area for flow. Baffles are oriented so as to laterally shift the direction of downflowing particles transversely as the particles move from one level to the next lower level and avoid channeling of the phases. The number of baffles, length and spacing is optimized to provide maximum interfacial area for interaction between the phases.

2005016, Jul 28, 2005

Jan 18, 2005

11/039125

Dalip Soni - Houston TX, US
Leonce Castagnos - Montgomery TX, US

ABB Lummus Global, Inc. - Bloomfield NJ

C10G011/00

208113000

A process for the fluid catalytic cracking of hydrocarbons includes contacting relatively heavy hydrocarbons with a fluidized particulate catalyst in a reaction zone under catalytic cracking conditions to convert at least some of the heavy hydrocarbons to light olefins having from 3 to 4 carbon atoms, conveying a reaction mixture containing spent catalyst particles and a gaseous stream containing the light olefins and other reaction products to a cyclone separation system directly connected to the reaction zone, at least part of the cyclone separation system being positioned within an interior space enclosed by a vessel, the interior space including a stripping region and an upper region in which the cyclone separation system is positioned. The cyclone separation system includes at least one cyclone connected directly to the reaction zone and having an interior pressure at least 0.05 psig lower than the pressure in the stripping region.

2007015, Jul 12, 2007

Jan 10, 2006

11/329492

Leonce Castagnos - Montgomery TX, US
Ting Chan - Bellaire TX, US

B01D 45/12

095271000, 055426000, 055459100

Disclosed herein is a cyclone for separating fine particles from a gas. The cyclone includes a cyclone body having an upper end with an inlet and a lower end with a particulate outlet, gas outlet tube with an upper end that extends upwardly into the lower end of the cyclone body, and a vortex breaker. The upper end of the gas outlet tube is connected to the lower end of the cyclone body by a slip joint. The configuration of the cyclone provides for efficient removal of fine particles as compared to conventional techniques. A vessel containing cyclones, and methods of separation using the cyclones and vessel, also are disclosed.

2010015, Jun 24, 2010

Mar 8, 2010

12/719325

Dalip S. Soni - Houston TX, US
Leonce F. Castagnos - Montgomery TX, US

B01J 8/18

422144

An apparatus and method for processing different feeds in a fluid catalytic cracking unit are disclosed which result in improved yields of C, Cand gasoline range hydrocarbons as compared to conventional systems. The process comprises injecting a main hydrocarbon feed into a catalyst-containing riser reactor through a plurality of main feed injectors, and injecting a light hydrocarbon feed into the riser reactor at a location upstream from the main feed injectors and downstream from a control valve such as a regenerated catalyst slide valve, the light feed being injected in a region having a high density of catalyst particles. The light feed is injected in a dispersed way such the amount of feed injected corresponds to the density of catalyst particles at that particular point, with greater amounts of feed being injected at locations having a large number of catalyst particles. Also, a heavy hydrocarbon feed or a heavy recycle stream from the same FCC unit can be injected at the same elevation as the main feed injectors but through separate injectors.

5320813, Jun 14, 1994

Jun 21, 1993

8/079291

Leonce F. Castagnos - The Woodlands TX

Texaco Inc. - White Plains NY

F27B 1508
B01D 4512

422147

A coke shield is mounted on a reactor cyclone outlet tube spaced above the roof of the cyclone body so as to protect a vent orifice between the cyclone roof and outlet tube from clogging with debris. The coke shield is also provided with a plurality of apertures to prevent any pressure unbalance in the system.

5376339, Dec 27, 1994

Nov 15, 1993

8/151647

Leonce F. Castagnos - The Woodlands TX
Harold C. Kaufman - Houston TX

Texaco Inc. - White Plains NY

B01J 818
C10G 1118

422142

A riser cyclone separator is positioned external to a containment vessel. The riser cyclone separator discharges separated catalyst to a catalyst stripper and separated vapor to a plenum, both positioned internal to the containment vessel. Means is provided for withdrawing stripping gas from the catalyst stripper and passing it via the riser cyclone separator to the plenum. The riser cyclone separator is inherently pressure stable relative to the containment vessel. The invention is particularly useful for retrofitting a direct-connected riser cyclone separator to a preexisting containment vessel with space limitations.

5389239, Feb 14, 1995

Nov 22, 1993

8/155356

Leonce F. Castagnos - The Woodlands TX

Texaco Inc. - White Plains NY

C10G 1118

208161

In a direct-coupled cyclone system, the riser cyclone is positioned external to a containment vessel. The riser cyclone separator discharges separated catalyst to a catalyst stripper internal to the containment vessel. Means is provided for withdrawing stripping gas from the catalyst stripper and passing it under pressure control to the riser cyclone separator. The riser cyclone separator is inherently pressure stable relative to the catalyst stripper. The invention is particularly useful for retrofitting a direct-coupled cyclone separator to a preexisting containment vessel with limited free volume.