Process for converting carbon monoxide and water in a reformate stream and apparatus therefore
OwnerPrashant S. Chintawar, Craig Thompson +1inventors
InventorsPrashant S. Chintawar, Craig Thompson, Mark R. Hagan
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Abstract
A process for converting carbon monoxide and water in a reformate stream into carbon dioxide and hydrogen comprising: generating a reformate by reacting a hydrocarbon via partial oxidation, steam reforming, or both, including autothermal reforming; and promoting a water gas shift in the reformate in the presence of a platinum group metal selected from the group consisting of platinum, palladium, iridium, osmium, rhodium and mixtures thereof, supported on zirconium oxide. The platinum group metal advantageously may be supported directly on a monolithic substrate composed of zirconium oxide.
Claims84
A process for converting carbon monoxide and water in a reformate stream into carbon dioxide and hydrogen comprising:
- generating a reformate by reacting a hydrocarbon via partial oxidation, steam reforming, or both, including autothermal reforming;
- and
- reacting the reformate in the presence of a platinum group metal selected from the group consisting of platinum, palladium, iridium, osmium, rhodium and mixtures thereof.
A process for converting carbon monoxide and water in a reformate stream into carbon dioxide and hydrogen via a water-gas-shift reaction, comprising:
- generating a reformate by reacting a hydrocarbon via partial oxidation, steam reforming, or both;
- reacting the reformate in the presence of a catalyst that (i) promotes a water gas shift reaction of carbon monoxide to carbon dioxide and (ii) is active and stable, at temperatures between about 200° C. to about 650° C.
A process for converting carbon monoxide and water in a reformate stream into carbon dioxide and hydrogen comprising via a water-gas-shift reaction, comprising:
- generating a reformate by reacting a hydrocarbon via partial oxidation, steam reforming, or both;
- and,
- reacting the reformate in the presence of a catalyst that promotes water gas shift of carbon monoxide to carbon dioxide and is resistant to loss of activity by exposure to any one of the constituents selected from the group of:
- sulfur, hydrogen sulfide, ethylene, benzene, air and condensed water.
A reactor comprising:
- a first reactor section configured to produce reformate by a process selected from the group of partial oxidation, steam reforming, or a combination thereof;
- a second reactor section in communication with the first reactor section so as to receive the reformate;
- a catalyst in the second reactor section comprising, a platinum group metal selected from the group consisting of platinum, palladium, iridium, osmium, rhodium and mixtures thereof;
- and,
- a support material, for the platinum group metal, selected from the group consisting of an oxide of zirconium, titanium and mixtures thereof.
A reactor comprising:
- a first reactor section configured to produce reformate by a process selected from the group of partial oxidation, steam reforming, or a combination thereof;
- a second reactor section in communication with the first reactor section so as to receive the reformate;
- a third reactor section in communication with the second so as to receive reformate from the second reactor section;
- a catalyst in the second reactor section comprising an iron-containing catalyst suitable for promoting a water-gas shift reaction at a temperature in the range of about 350° C. to about 650° C.;
- a catalyst in the third reactor section comprising, a platinum group metal selected from the group consisting of platinum, palladium, iridium, osmium, rhodium and mixtures thereof;
- and,
- a support material, for the platinum group metal, selected from the group consisting of an oxide of zirconium, titanium and mixtures thereof.
An improved process for converting carbon monoxide and water in a reformate stream into hydrogen and carbon dioxide, characterized in that a reformate, which is generated by one or more of partial oxidation, steam reforming, autothermal reforming, is reacted in a reactor with a first catalyst, wherein the first catalyst comprises a metal selected from platinum, palladium, iridium, osmium, rhodium, and mixtures thereof, and wherein said metal is deposited on a support of a zirconium oxide.
Dependencies are inferred from the claim text.