Anurag L Gupta

US Patent:

20130259697, Oct 3, 2013

Filed:

Mar 30, 2012

Appl. No.:

13/436730

Inventors:

Andreas Herrig - Rheine, DE
Anurag Gupta - Houston TX, US

Assignee:

GENERAL ELECTRIC COMPANY - SCHENECTADY NY

International Classification:

F03D 1/06

US Classification:

416223 R

Abstract:

A wind turbine blade includes a root portion, a tip and a body extending between the root portion and the tip. The body has a pressure side and a suction side. The body further has at least one winglet. Each winglet has a spanwise extension towards the root portion of the rotor blade and that ends at the tip to form a winglet having a substantially C-shaped or substantially open P-shaped geometry.

US Patent:

20160215073, Jul 28, 2016

Filed:

Mar 31, 2016

Appl. No.:

15/086598

Inventors:

- The Woodlands TX, US
Anurag GUPTA - Sugar Land TX, US
Ralph W. ROMIG - Kingwood TX, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 2/01
B01J 19/18
C08F 2/00

Abstract:

A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.

US Patent:

20140318743, Oct 30, 2014

Filed:

Apr 29, 2013

Appl. No.:

13/872746

Inventors:

- The Woodlands TX, US
Anurag Gupta - Sugar Land TX, US
Ralph W. Romig - Kingwood TX, US

Assignee:

Chevron Phillips Chemical Company, LP - The Woodlands TX

International Classification:

F28D 15/00

US Classification:

16510411

Abstract:

A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.

US Patent:

20090228259, Sep 10, 2009

Filed:

May 19, 2009

Appl. No.:

12/468702

Inventors:

Anurag Gupta - Sugarland TX, US
Donald W. Verser - Houston TX, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

G06G 7/48

US Classification:

703 12, 700269

Abstract:

Methods for controlling polyolefin reactor temperature. In one embodiment, a simulation model is constructed for improving control of polymerization temperature in a polyethylene loop slurry reactor. The model is used to design the reactor coolant system to capacity and to improve tuning of system controllers, such as the reactor temperature controller and coolant temperature controller. A coolant control valve is sized having a bilinear flow characteristic that improves Cv reproducibility at low coolant flow rates and thus improves reactor temperature control.

US Patent:

20070142576, Jun 21, 2007

Filed:

Dec 21, 2005

Appl. No.:

11/313328

Inventors:

John Tait - Stafford TX, US
Robert Murphy - Shanghai, CN
Michael Watts - Houston TX, US
Anurag Gupta - Sugarland TX, US

International Classification:

C08F 2/00

US Classification:

526064000, 526070000, 526351000, 526352000

Abstract:

A polyolefin production system, comprising a polymerization reactor (such as a polyethylene loop slurry reactor) and a fractionation system that receives reactor effluent processed in a diluent/monomer recovery system for recycle to the reactor and to suppliers. A conduit diverts a portion of a reflux flow comprising monomer, such as ethylene, from within the fractionation system to the polymerization reactor, providing for less venting of monomer, such as ethylene, to the supplier. Accordingly, monomer yield is advantageously increased, as the monomer returned to the reactor displaces monomer feedstock to the reactor. The reflux flow may originate from a condensed overhead lights from a diluent recycle column disposed in the fractionation subsystem. The diluent recycle column may receive a stream comprising diluent and monomer as feed from the diluent/monomer recovery subsystem, and may receive the non-diverted portion of the reflux flow as reflux.

US Patent:

20050091021, Apr 28, 2005

Filed:

Oct 27, 2003

Appl. No.:

10/694565

Inventors:

Anurag Gupta - Sugarland TX, US
Donald Verser - Houston TX, US

International Classification:

G06G007/48

US Classification:

703012000, 526061000, 700269000

Abstract:

Methods and apparatus for controlling polyolefin reactor temperature. In one embodiment, a simulation model is constructed for improving control of polymerization temperature in a polyethylene loop slurry reactor. The model is used to design the reactor coolant system to capacity and to improve tuning of system controllers, such as the reactor temperature controller and coolant temperature controller. A coolant control valve is sized having a bilinear flow characteristic which improves Cv reproducibility at low coolant flow rates and thus improves reactor temperature control.