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US 11,235,973 B2Granted
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.
Claims7
A method for high temperature gasification, comprising:
- flowing a stream of a first hydrocarbon gas from an entrance of a bottom annular plenum region over one or more heat transfer fins located within the bottom annular plenum region and towards a bottom inlet at a bottom of an annular plenum;
- flowing the stream of the first hydrocarbon gas from the bottom inlet toward a top outlet of the annular plenum;
- 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 of the cylindrical plenum;
- 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 located in a bottom cylindrical can, wherein the heat sink and heat transfer fins are in thermal communication,
- wherein the bottom annular plenum region is located below the annular plenum region and the cylindrical plenum.
7 more elements
Dependencies are inferred from the claim text.