Process for reducing the oxygen content of the atmosphere in a heat treatment furnace and heat treatment furnace for carrying out this process
AssigneeLudwig Riedhammer GmbH & Co. KG
InventorFritz Petzi
Life of this patent
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Abstract
A process for reducing the oxygen content of the atmosphere in a heat treatment furnace for ceramic materials to a prescribed value comprises measuring the O.sub.2 content of the furnace atmosphere at the point in the furnace to be affected and introducing fuel gas into the furnace as a function of the measurement result in such quantities that the desired oxygen content is attained. Also described is a furnace design suitable for carrying out this process.
Claims11
Method for reducing the oxygen content of the atmoshere of a heat treatment furnace for cermaic materials which release oxygen on heating at a particular location in the furnace to be at or below a predetermined reference value, comprising measuring the O.sub.2 content of the furnace atmosphere at that particular location with an O.sub.2 sensing means, and introducing fuel gas into the furnace according to the O.sub.2 content measured, said fuel gas being introduced in regulated quantities separate from the furnace fuel stream until the oxygen content is measured as being at or below the given reference value, whereby the O.sub.2 in excess of the reference value is combined with said fuel gas in an oxidation reaction.
Heat treatment furnace for ceramic material comprising a furnace channel in which the oxygen content of the atmosphere is controlled to be at or below a predetermined reference value at particular locations, at least one oxygen measuring probe being disposed at a particular location in the interior of the furnace channel which measures the O.sub.2 content at that location and compares it with said reference value, a regulator fuctionally connected to said probe which controls the quantity of a fuel gas introduced into the furnace channel through a fuel gas intake to the quantity necessary for reducing excess oxygen at the particular location in excess of the reference value.
Dependencies are inferred from the claim text.