Synthetic ammonia system and method

Abstract

The ammonia synthesis system comprises a water electrolysis hydrogen production unit, a deoxidation reaction unit, an ammonia synthesis unit and an air compression unit, and a hydrogen outlet of the water electrolysis hydrogen production unit, the deoxidation reaction unit and the ammonia synthesis unit are sequentially connected through a pipeline I; an outlet of the air compression unit is connected with the deoxidation reaction unit through a pipeline II; a hydrogen flow monitoring valve I is arranged between the water electrolysis hydrogen production unit and the deoxidation reaction unit, and an air flow monitoring valve is arranged between the air compression unit and the deoxidation reaction unit. Hydrogen generated in the water electrolysis hydrogen production unit and air in the air compression unit enter the deoxidation reaction unit, and in the deoxidation reaction unit, the hydrogen reacts with oxygen in the air. The hydrogen entering the deoxidation reaction unit is excessive, so that the oxygen in the deoxidation reaction unit is completely reacted, and the ammonia synthesis gas is obtained. Ammonia synthesis gas enters the ammonia synthesis unit, and hydrogen and nitrogen react to synthesize ammonia gas.

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