AMMONIA PURIFICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an ammonia purification system, capable of efficiently purifying crude ammonia while reducing energy consumption.

SOLUTION: The ammonia purification system 200 comprises: a storage tank 1 for storing crude ammonia; an adsorption means 2 for adsorbing and removing impurities in the crude ammonia; a first distillation tower 4 for distillation-removing low-boiling point impurities; a second distillation tower 5 for distillation-removing high-boiling point impurities; a condenser 6 for condensing and recovering purified ammonia as liquid ammonia; an analysis means 3 for analyzing concentrations of impurities contained in the ammonia derived from the adsorption means 2; piping 8 which forms a flow passage for passing the ammonia derived from the adsorption means 2; a flow passage opening/closing means 9 for opening and closing the flow passage in the piping 8; and a flow passage opening/closing control means 101 which controls the opening/closing operation of the flow passage opening/closing means 9 based on the analysis result by the analysis means 3.

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