Himanshu Gupta

US Patent:

8226917, Jul 24, 2012

Filed:

Jun 28, 2006

Appl. No.:

11/994316

Inventors:

Himanshu Gupta - Lorton VA, US
Mahesh V. Iyer - Houston TX, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

B01D 53/02

US Classification:

42324403, 4232441

Abstract:

A reaction-based process has been developed for the selective removal of carbon dioxide (CO) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet COconcentration in the stream. The proposed process effects the separation of COfrom a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO(CaRS—CO) process consists of contacting a COladen gas with calcium oxide (CaO) in a reactor such that CaO captures the COby the formation of calcium carbonate (CaCOa). Once “spent”, CaCOis regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO. The “regenerated” CaO is then recycled for the further capture of more CO. This carbonation-calcination cycle forms the basis of the CaRS—COprocess.

US Patent:

8501105, Aug 6, 2013

Filed:

Jul 20, 2012

Appl. No.:

13/555054

Inventors:

Himanshu Gupta - Lorton VA, US
Mahesh V. Iyer - Houston TX, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

B01D 50/00

US Classification:

422177, 422168

Abstract:

A reaction-based process developed for the selective removal of CO2 from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration. The proposed process effects the separation of CO2 from a mixture of gases by its reaction with metal oxides. The Calcium based Reaction Separation for CO2 (CaRS-CO2) process consists of contacting CO2 laden gas with CaO in a reactor such that CaO captures CO2 by the formation of CaCO3. CaCO3 is regenerated by calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of CO2. This carbonation-calcination cycle forms the basis of the CaRS-CO2 process. This process also may use a mesoporous CaCO3 structure that attains >90% conversion over multiple carbonation and calcination cycles.

US Patent:

8524071, Sep 3, 2013

Filed:

Apr 19, 2010

Appl. No.:

12/799120

Inventors:

Miron V. Landau - Beer-Sheva, IL
Mordechay Herskowitz - Meitar, IL
Iehudit Reizner - Lehavim, IL
Yaron Konra - Rupin, IL
Himanshu Gupta - Lorton VA, US
Rajeev Agnihotri - Beaumont TX, US
Paul J. Berlowitz - Glen Gardner NJ, US
James E. Kegerreis - Fairfax VA, US

Assignee:

ExxonMobil Research and Engineering Company - Annadale NJ

International Classification:

C10G 25/00
C10G 29/04
C10G 29/06

US Classification:

208244, 208245, 208250, 208299, 208300, 208307

Abstract:

The present invention provides a high capacity adsorbent for removing sulfur from hydrocarbon streams. The adsorbent comprises a composite material containing particles of a nickel phosphide complex NiP. The adsorbent is utilized in a sulfur removal process that does not require added hydrogen, and run at relatively low temperatures ranging from about 150 C. to about 400 C. The process of this invention enables “ultra-deep” desulfurization down to levels of about 1 ppm and less.

US Patent:

20080099375, May 1, 2008

Filed:

Oct 26, 2007

Appl. No.:

11/977898

Inventors:

Miron Landau - Beer-Sheva, IL
Mordechay Herskowitz - Meitar, IL
Iehudit Reizner - Lehavim, IL
Yaron Konra - Rupin, IL
Himanshu Gupta - Lorton VA, US
Rajeev Agnihotri - Beaumont TX, US
Paul Berlowitz - Glen Gardner NJ, US
James Kegerreis - Fairfax VA, US

International Classification:

C10G 29/06

US Classification:

208244000, 502406000

Abstract:

The present invention provides a high capacity adsorbent for removing sulfur from hydrocarbon streams. The adsorbent comprises a composite material containing particles of a nickel phosphide complex NiP. The adsorbent is utilized in a sulfur removal process that does not require added hydrogen, and run at relatively low temperatures ranging from about 150 C. to about 400 C. The process of this invention enables “ultra-deep” desulfurization down to levels of about 1 ppm and less.

US Patent:

20100282567, Nov 11, 2010

Filed:

Apr 13, 2010

Appl. No.:

12/798857

Inventors:

Krishnan Sankaranarayanan - South Riding VA, US
Himanshu Gupta - Lorton VA, US

International Classification:

C10G 25/00

US Classification:

196 46

Abstract:

A fuel desulfurization system that can be located on-board a transportation vehicle. The desulfurization system contains a unique sorption vessel having a vacuum shell design to ensure a prescribed axial and radial temperature profile under operating conditions.

US Patent:

20130091854, Apr 18, 2013

Filed:

Jun 9, 2011

Appl. No.:

13/702540

Inventors:

Himanshu Gupta - Lorton VA, US
Richard Huntington - Houston TX, US
Moses K. Minta - Missouri City TX, US
Franklin F. Mittricker - Jamul CA, US
Loren K. Starcher - Sugar Land TX, US

International Classification:

F02M 25/07
F02B 47/10

US Classification:

60772, 60 3952

Abstract:

Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes a gas turbine system configured to stoichiometrically combust a compressed oxidant derived from enriched air and a fuel in the presence of a compressed recycle exhaust gas and expand the discharge in an expander to generate a recycle exhaust stream and drive a main compressor. A boost compressor receives and increases the pressure of the recycle exhaust stream and prior to being compressed in a compressor configured to generate the compressed recycle exhaust gas. To promote the stoichiometric combustion of the fuel and increase the COcontent in the recycle exhaust gas, the enriched air can have an increased oxygen concentration.

US Patent:

20150027924, Jan 29, 2015

Filed:

Jun 19, 2014

Appl. No.:

14/308932

Inventors:

Himanshu Gupta - Lorton VA, US
Stephen Harold BROWN - Annandale NJ, US
Federico BARRAI - New York NY, US
Kirtan Kunjbihari TRIVEDI - Centreville VA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 65/02
C10G 49/12

US Classification:

208 49, 208153

Abstract:

Systems and methods are provided for processing a heavy oil feed, such as an atmospheric or vacuum resid, using a combination of solvent assisted hydroprocessing and slurry hydroconversion of a heavy oil feed. The systems and methods allow for conversion and desulfurization/denitrogenation of a feed to form fuels and gas oil (or lubricant base oil) boiling range fractions while reducing the portion of the teed that is exposed to the high severity conditions present in slurry hydroconversion.

US Patent:

20140154162, Jun 5, 2014

Filed:

May 13, 2013

Appl. No.:

13/892822

Inventors:

The Ohio State University - , US
Himanshu Gupta - Lorton VA, US
Mahesh V. Iyer - Houston TX, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

B01D 53/50
B01D 53/62

US Classification:

423230, 422168

Abstract:

A reaction-based process developed for the selective removal of CO2 from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration. The proposed process effects the separation of CO2 from a mixture of gases by its reaction with metal oxides. The Calcium based Reaction Separation for CO2 (CaRS—CO2) process consists of contacting CO2 laden gas with CaO in a reactor such that CaO captures CO2 by the formation of CaCO3. CaCO3 is regenerated by calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of CO2. This carbonation-calcination cycle forms the basis of the CaRS—CO2 process. This process also may use a mesoporous CaCO3 structure that attains >90% conversion over multiple carbonation and calcination cycles.