Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas
US11280491B2 · kind B2 · utility
0Cited by
9References
16Claims
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Key dates
| Filing date | Aug 16, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/50
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.