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目前,国内空分行业各制造厂采用的空分工艺流程基本上趋于一致,均采用全低压分子筛预净化,增压透平膨胀,全精馏制氩等新技术。空分设备中的关键设备如:上塔,粗氩塔,精氩塔均采用了规整填料塔技术。但是由于氩气的沸点介于氧、氮之间,分离难度偏大,在调试工况负荷可变可调的空间偏小,粗氩塔工况的建立对主塔的工况要求高;氮塞温度区间小等一系列的客观因
At present, the air separation process adopted by each manufacturing plant in the domestic air separation industry basically converges. All technologies are pre-purifying with full-pressure molecular sieve, turboexpansion of turbocompressor, and argon purging with full rectification. Air separation plant in the key equipment such as: on the tower, crude argon column, refined argon column are structured packing tower technology. However, since the boiling point of argon is between oxygen and nitrogen, the difficulty of separation is large, and the space with variable adjustable load in the commissioning condition is small. The construction of the crude argon column requires high working conditions of the main tower. Nitrogen Plug the temperature range of a small series of objective reasons