Patent · US Active

Method for operating a batch furnace comprising the preheating of a fluid upstream of the furnace

US11378338B2 · kind B2 · utility

0Cited by

3References

16Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

Luc Jarry · Beaufai, FR
Peter VAN KAMPEN · Shanghai, CN

Key dates

Filing date	Jun 29, 2017
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Mar 20, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E20/34
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

Furnace operation includes consecutive cycles of a heating step, a stopping step and a restarting step. The fuel and/or the oxidizing agent is preheated upstream of the furnace by indirect exchange with the discharged fumes through a medium passing through a chamber. A first wall separates the fumes from the medium in the chamber. The fuel and/or oxidizing agent is separated from the medium in the chamber by a second wall. During restarting, the medium's flow rate Dm is regulated to limit the heating rate of the first wall until it reaches the operational temperature at an end thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.