Reacting with oxygen in nitrogen through hydrogenation to catalyze deoxygenation. By cooling with water and pre dehydrating with a refrigerated dryer, and then using efficient adsorbents to remove water vapor from nitrogen gas. Two groups can be used alternately, and the equipment can operate continuously for a long time.

Connect two adsorption dryers in parallel, one working while the other can be used for regeneration treatment. Alternating between work and regeneration to ensure continuous operation. The dryer operates at room temperature. When regenerating the dryer, it is necessary to heat it up to 350 ℃ and rinse it with pure gas for regeneration.