Electrically heated steam reforming reactor
AssigneeRaven SR, Inc.
InventorTerry R. Galloway
Life of this patent
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Abstract
What has been achieved by this invention is a method and design of providing high temperature heat for an endothermic gasifier without combustion using electrical resistance immersion heating element technology. Further, these elements could be heated by three phase electrical power; thus, minimizing the number of electrical leads emerging from the top of the heating elements. This invention solves the difficulty of designing the steam/CO2 reforming reactor with a large number of densely packed heating elements and the syngas heat recuperator into one reactor. This is done to avoid the extremely hot syngas leaving the reactor from melting the downstream metal fittings carrying the reactor product gases to the downstream piping process.
Claims21
-25. (canceled)
A method for high temperature gasification, comprising:
- flowing a stream of a first hydrocarbon gas from an entrance of a bottom annular plenum region toward an inlet at a bottom of an annular plenum;
- flowing the stream of the first hydrocarbon gas from the bottom inlet toward a top outlet;
- heating the flowing first gas along the axial length of the annular plenum;
- flowing the heated gas from the top outlet to a top inlet of a cylindrical plenum and toward a bottom outlet;
- heating the flowing gas along the axial length of the cylindrical plenum;
- converting the first hydrocarbon gas to a syngas by said heating in at least one of the annular or cylindrical plenums;
- and
- removing the syngas from the bottom outlet.
A method for high temperature gasification, comprising:
- flowing a stream of a first hydrocarbon gas from an inlet at a bottom of an annular plenum toward a top outlet;
- heating the flowing first gas along the axial length of the annular plenum;
- flowing the heated gas from the top outlet to a top inlet of a cylindrical plenum and toward a bottom outlet;
- heating the flowing gas along the axial length of the cylindrical plenum;
- converting the first hydrocarbon gas to a syngas by said heating in at least one of the annular or cylindrical plenums;
- removing the syngas from the bottom outlet;
- and
- flowing the removed syngas from the bottom outlet over a heat sink;
- wherein the annular plenum surrounds the cylindrical plenum.
A method for high temperature gasification, comprising:
- flowing a stream of a first hydrocarbon gas from an inlet at a bottom of an annular plenum toward a top outlet;
- heating the flowing first gas along the axial length of the annular plenum using a plurality of substantially linear heating elements extending along the axial length of the annular plenum;
- flowing the heated gas from the top outlet to a top inlet of a cylindrical plenum and toward a bottom outlet;
- heating the flowing gas along the axial length of the cylindrical plenum;
- converting the first hydrocarbon gas to a syngas by said heating in at least one of the annular or cylindrical plenums;
- and
- removing the syngas from the bottom outlet.
Dependencies are inferred from the claim text.