Patent ID: 11926527
Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Field: Measurement (Instruments)
Classification: CPC C  B  F  G | IPC B  C  F  G

Claim 7:
8. A system for controlling a furnace containing a plurality of catalyst-containing tubes heated by a combustion gas generated by a plurality of burners, said system comprising (i) tunable diode laser absorption spectroscopy apparatus configured to provide path-averaged combustion gas temperatures on multiple paths through the furnace, (ii) temperature measurement apparatus configured to periodically measure temperatures of surfaces within the furnace to obtain periodic surface temperature information, (iii) a computer model of the furnace, said model comprising parameters for controlling the furnace; and (iv) a controller for controlling the furnace using optimised parameters provided by the computer model, wherein the furnace is a fired steam reformer.