Method for drying catalytic oxidation furnace

A method for drying a catalytic oxidation furnace, the method comprising:

• 1) charging a feed gas comprising oxygen and natural gas, and a temperature control gas capable of reducing a reaction temperature rising rate to a catalytic oxidation furnace loaded with a catalyst, wherein a molar ratio of the oxygen to the natural gas in the feed gas is 0.3-0.6:1, and a molar ratio of the temperature control gas to the feed gas is 0.1-7:1.3-1.6;
• 2) preheating a mixed gas comprising the feed gas and the temperature control gas to increase a temperature of the mixed gas, and stopping the preheating when the temperature of the mixed gas achieves a temperature adapted to trigger an oxidation reaction of the mixed gas;
• and
• 3) within the molar ratio of the temperature control gas to the feed gas being 0.1-7:1.3-1.6, reducing the molar ratio of the temperature control gas to the feed gas so that a rise of the temperature of the mixed gas conforms to a temperature rising rate of a drying-out curve of a heat insulation refractory material of the catalytic oxidation furnace, and stopping charging the temperature control gas when the reaction temperature achieves the working temperature of the catalytic oxidation furnace.