Electrically heated steam reforming reactor
AssigneeRaven SR, Inc.
InventorTerry R. Galloway
Life of this patent
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Abstract
A method and design of providing high temperature heat for an endothermic gasifier without combustion includes flowing a stream of a first hydrocarbon gas sequentially through an annular plenum and a cylindrical plenum while heating the gas using electrical resistance immersion heating elements. These heating elements may be heated by three phase electrical power, minimizing the number of electrical leads emerging from the top of the heating elements. This method and design reduces the risk of extremely hot syngas exiting the gasifier damaging downstream fittings.
Claims42
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, the bottom annular plenum region being discrete from the annular plenum;
- flowing the stream of the first hydrocarbon gas from the bottom inlet toward a top outlet;
- electrically 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;
- electrically 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
- transferring heat from the syngas proximate the bottom outlet to the first gas in the bottom annular plenum region;
- 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 entrance of a bottom annular plenum region toward an inlet at the bottom of an annular plenum, the bottom annular plenum region including a plurality of heat transfer fins;
- flowing the stream of the first hydrocarbon gas from the bottom inlet toward a top outlet;
- electrically 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;
- electrically 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;
- wherein the annular plenum surrounds the cylindrical plenum.
Dependencies are inferred from the claim text.