Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas

US10465904B2 · kind B2 · utility

Assignees

• American Air Liquide, Inc. · US
• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Taekyu Kang · Newark, US
• James McAndrew · Chadds Ford, US
• Remi Tsiava · Corbeil-Essonnes, FR
• Jiefu Ma · Bear, US
• Ryan B. Adelman · Houston, US
• Henri Chevrel · Tsukuba, JP

Key dates

• Filing date: Apr 6, 2018
• Grant date: Nov 5, 2019
• Expiry date: Apr 6, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/50
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical 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.