Hydrogensource LLC

Shell Oil Comapny

Wayne G Wnuck

Ke Liu

Peter F Foley

Eric A Rohrbach

John G Buglass

Haroldus Adrianus Johannes Van Dijk

Stephan Montel

Willem P Leenhouts

The present invention provides a process for the production of hydrogen from the catalytic partial oxidation of a hydrocarbonaceous feedstock () with molecular oxygen () over a partial oxidation catalyst (), which process comprises: during a reaction time interval contacting a first mixture of the hydrocarbonaceous feedstock and molecular oxygen with an overall oxygen-to-carbon ratio in the range of from 0.3 to 0.8 with the partial oxidation catalyst to convert the feedstock to a hydrogen-comprising gas and during a regeneration time interval contacting a second mixture of the hydrocarbonaceous feedstock and molecular oxygen with an oxygen-to-carbon ratio in the range of from 1.0 to 10 with the partial oxidation catalyst, in which process the regeneration time interval is in the range of from 2 to 10 seconds and the ratio of the reaction time interval to the regeneration time interval is at most 40.

Process for the production of hydrogen

Oxides of nitrogen are adsorbed onto the surfaces of, and particulates are trapped in, pores of channels (-) in a porous, interdigitated ceramic particulate filter () that has relative rotation with respect to a gas inlet distributor (). The distributor has a baffle () or ribs () that causes constantly flowing engine exhaust () to enter the filter channels over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing syngas () to thereafter pass through those passages during a small portion of each revolution. Either the inlet gas distributor () or the filter bed () may be rotated to distribute the gases. Dual, alternately regenerated filters () may be used.

Method of reducing NOx and particulates from internal combustion engines

A catalytic partial oxidizer () provides syngas (hydrogen and carbon monoxide) to an apparatus intermittently using syngas such as valves () feeding NOx traps (), for brief periods of time. During turndown times when syngas is not being used, either the output of the CPO is diverted () to the inlet () of an engine () through the engine gas recycle (EGR) system (), or the amount of fuel () and exhaust () applied to the CPO is reduced () so that the CPO merely stays warm and in a reduced state, thereby being ready to restart immediately. A mini-CPO () may provide syngas and heat to the major CPO () during the turndown time when syngas is not being used by the NOx traps.

Intermittent application of syngas to NOx trap and/or diesel engine

A single lean NOx trap () has an inlet manifold () with baffles () to divide the inlet manifold into three flow paths (). Each flow path has a thermal reformer (; CPO, (POX, or ATR) with an electric heater provided electric power by related lines (). Fuel from a source () is controlled () to apply pulses of fuel through nozzles () into each corresponding path () in turn. A plurality of diesel particulate filters () are disposed in the flow paths () upstream of the lean NOx trap (). A diesel oxidation catalyst () is disposed downstream of the lean NOx trap.

CPO regenerated lean NOx trap with no moving parts

Oxides of nitrogen are adsorbed onto the surfaces of gas passages ( ) in a bed ( ) that has relative rotation with respect to a gas inlet distributor ( ). The manifold has a baffle ( ) or ribs ( ) that causes constantly flowing engine exhaust ( ) to enter the gas passages over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing regeneration gas ( ) to thereafter pass through those passages during a small portion of each revolution. The passages may be formed by planar ( ) or helical ( ) radial walls ( ), a serpentine wall ( ), a monolith ( ), or a honeycomb ( ). Either the distributor ( ) or the bed ( ) may be rotated to distribute the gases.

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South Windsor, CT, United States of America

Wayne G Wnuck