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1. (WO2018007723) METHOD FOR PREHEATING A FLUID UPSTREAM OF A FURNACE

Pub. No.:    WO/2018/007723    International Application No.:    PCT/FR2017/051742
Publication Date: Fri Jan 12 00:59:59 CET 2018 International Filing Date: Fri Jun 30 01:59:59 CEST 2017
IPC: F23L 15/04
F28D 15/00
F23L 7/00
F23N 3/00
Applicants: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
Inventors: JARRY, Luc
VAN KAMPEN, Peter
Title: METHOD FOR PREHEATING A FLUID UPSTREAM OF A FURNACE
Abstract:
Method for indirectly preheating a fluid 40 upstream of a furnace, wherein the fluid is preheated by indirect heat exchange with fumes 10 discharged from the furnace through a medium 31 in a chamber 20, and wherein the flow rate of the medium 31 in the chamber 20 is adjusted on the basis of at least one of the following temperatures: the temperature of the discharged fumes 10, the temperature of the medium 32 in the chamber 20, the temperature of the preheated fluid 42, and the temperature of the wall 21 separating the discharged fumes 31 from the medium 31 in the chamber 20.