Ramchandra Mukund Watwe

7985399, Jul 26, 2011

Mar 27, 2008

12/056718

Raymond F. Drnevich - Clarence Center NY, US
Ramchandra M. Watwe - Troy MI, US

Praxair Technology, Inc. - Danbury CT

C01B 3/26

423652, 4236481, 423650, 423651, 423653

A hydrogen production method and facility in which a synthesis gas stream produced by the gasification of a carbonaceous substance is processed within a synthesis gas processing unit in which the carbon monoxide content is reacted with steam to produce additional hydrogen that is removed by a pressure swing adsorption unit. The tail gas from the pressure swing adsorption unit is further reformed with the addition of a hydrocarbon containing stream in a steam methane reforming system, further shifted to produce further additional hydrogen. The further hydrogen is then separated in another pressure swing adsorption unit.

8323365, Dec 4, 2012

May 22, 2008

12/125585

Raymond Francis Drnevich - Clarence Center NY, US
Vasilis Papavassiliou - Williamsville NY, US
Troy Michael Raybold - Colden NY, US
Ramchandra Mukund Watwe - Houston TX, US

Praxair Technology, Inc. - Danbury CT

C01B 3/36
C01B 6/24
C01B 3/02
B01J 7/00
B01J 8/00

48197R, 48 61, 423644, 4236481, 422625

The present invention relates to systems and processes for producing syngas in steam methane reformer (SMR)-based plants, particularly to the use of a high space velocity, dual mode catalytic reactor to pre-reform plant feedstock. The dual mode reactor has the capability to operate in two modes: either without oxygen addition in a reforming mode or with oxygen addition in a partial oxidation-reforming mode. The dual mode reactor allows the syngas production rate of the plant to be manipulated without the added capital expense of a reheat coil and with reduced impact on export steam production.

20100074839, Mar 25, 2010

Sep 22, 2008

12/234781

Raymond Francis Drnevich - Clarence Center NY, US
Ramchandra M. Watwe - Houston TX, US

C01B 3/12

423655

A method of producing a hydrogen product stream in which a steam stream is reacted with a hydrocarbon containing stream within a steam methane reformer. The resulting product stream is subjected to a water gas shift reaction and then to pressure swing adsorption to produce the hydrogen product stream. The hydrocarbon stream is alternatively formed from a first type of feed stream made up of natural gas, refinery off-gas, naphtha or synthetic natural gas or combinations thereof and a second type that is additionally made up of a hydrogen and carbon monoxide containing gas. During use of both of the types of feed streams, the flow rate of the steam stream is not substantially changed and reformer exit temperatures of both the reactant and the flue gas side are held essentially constant.