Heat integrated reformer with catalytic combustion for hydrogen production
A heat integrated steam reformer, which incorporates a catalytic combustor, which can be used in a fuel processor for hydrogen production from a fuel source, is described. The reformer assembly comprises a reforming section and a combustion section, separated by a wall. Catalyst ( 21 ) able to induce the reforming reactions is placed in the reforming section, either in the form of pellets or in the form of coating on a suitable structured catalyst substrate such as fecralloy sheets. Catalyst ( 22 ) able to induce the combustion reactions is placed in the combustion section in the form of coating on suitable structured catalyst substrate such as fecralloy sheet. A steam and fuel mixture ( 30 ) is supplied to the reforming section ( 14 ) where it is reformed to produce hydrogen. A fuel and an oxygen ( 32 ) containing gas mixture is supplied to the combustion section where it is catalytically combusted to supply the heat for the reformer. The close placement of the combustion and reforming catalysts facilitate efficient heat transfer. Multiple such assemblies can be bundled to form reactors of any size. The reactor made of this closely packed combustion and reforming sections is very compact.
1. An apparatus for the production of hydrogen from a fuel source, comprising:
a combustor configured to receive at least a combustor fuel and convert the combustor fuel into a combustor heat;
a reformer disposed annularly about the combustor, wherein the reformer and the combustor define a gap therebetween and the reformer is configured to receive the combustor heat; and
a removable structured catalyst support disposed within the gap and coated with a catalyst to induce combustor fuel combustion reactions that convert the combustor fuel to the combustor heat, the structured catalyst support being in contact with the combustor and the reformer, forming heat exchange zones where heat is transferred between a feed of the combustor and products of the reformer, and between a feed of the reformer and products of the combustor,
wherein the reformer being configured to receive at least a reformer fuel and to produce a reformate containing primarily hydrogen,
wherein the reformer further containing a reforming catalyst to induce reformer fuel reforming reactions to produce the reformate,
wherein the structured catalyst support of the combustor is made of corrugated fecralloy sheets,
wherein the corrugated fecralloy sheets are coated with a high surface area alumina film containing a dispersed metal phase of palladium or platinum metal, and mixtures thereof, and
wherein the dispersed metal phase is between 0.1-10% of the alumina film.
2. An apparatus according to claim 1 , wherein the reforming catalyst includes a nickel based catalyst.
3. The apparatus of claim 1 , wherein the reformer fuel to be reformed and the combustor fuel to be combusted are in countercurrent flow configuration to each other.
4. An apparatus according to claim 1 , wherein the reforming catalyst includes catalyst pellets.
5. An apparatus according to claim 1 , wherein the reforming catalyst includes a structured catalyst support coated with a catalyst.
6. An apparatus according to claim 5 , wherein the structured catalyst support is coated with a catalyst is removable.
7. An apparatus according to claim 1 , wherein the reforming catalyst is fecralloy sheets coated with a catalyst.
8. An apparatus according to claim 7 , wherein the fecralloy sheets being in close contact with the combustor and the reformer.
9. An apparatus for the production of hydrogen from a fuel source, comprising:
a combustor configured to receive at least a combustor fuel and convert the combustor fuel into a combustor heat;
a reformer disposed annularly about the combustor, wherein the reformer and the combustor define a gape therebetween and the reformer is configured to receive the combustor heat; and
a removable structured catalyst support disposed within the gap and coated with a catalyst to induce combustor fuel combustion reactions that convert the combustor fuel to the combustor heat, the structured catalyst support being in contact with the combustor and the reformer,
wherein the structured catalyst support of the combustor is made of corrugated fecralloy sheets,
wherein the corrugated fecralloy sheets are coated with a high surface area alumina film containing a dispersed metal phase of palladium or platinum metal, and mixtures thereof, and
wherein the dispersed metal phase is between 0.1-10% of the alumina film.
10. An apparatus according to claim 9 , wherein the reformer further containing a reforming catalyst to induce reformer fuel reforming reactions to produce the reformate, and wherein the reforming catalyst is a nickel based catalyst.
11. The apparatus of claim 10 , wherein the reformer fuel to be reformed and the combustor fuel to be combusted are in countercurrent flow configuration to each other.
12. An apparatus according to claim 10 , wherein the reforming catalyst includes catalyst pellets.
13. An apparatus according to claim 10 , wherein the reforming catalyst includes a structured catalyst support coated with a catalyst.
14. An apparatus according to claim 13 , wherein the structured catalyst support is coated with a catalyst is removable.
15. An apparatus according to claim 10 , wherein the reforming catalyst includes fecralloy sheets coated with a catalyst.
16. An apparatus according to claim 15 , wherein the fecralloy sheets being in close contact with the combustor and the reformer.