Single-tower low-temperature rectification argon recycling system with cycle and single-tower low-temperature rectification argon recycling method
A low-temperature rectification and argon gas technology, which is applied in liquefaction, solidification, cold treatment and separation, etc., can solve the problems of many moving parts, high energy consumption, and large investment, and achieve the goals of reducing operating energy consumption, improving recovery rate, and enhancing efficiency Effect
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Embodiment 1
[0031] Such as figure 1 As shown, this embodiment provides a single-column low-temperature rectification recovery argon system with circulation, including an argon compressor 1, a carbon monoxide remover 2, a first cooler 3, a deaerator 4, and a second cooler 5 , argon precooler 6, purification system 7, rectification cold box 8 and argon circulation compressor 18; rectification cold box 8 includes heat exchanger 9, argon tower reboiler 10, crude liquid argon throttle valve 11 , refined argon tower 12, pure liquid argon throttle valve 13, argon tower condensing evaporator 15 and auxiliary reboiler 16;
[0032] The pipeline connection sequence is:
[0033] Argon compressor 1, carbon monoxide remover 2, first cooler 3, deaerator 4, second cooler 5, argon precooler 7, and purification system 7 are connected in sequence;
[0034] The gas outlet pipeline of the purification system 7 is connected to the argon column reboiler 10 through the heat exchanger 9, and the condensation si...
Embodiment 2
[0041] Using the system provided in Example 1, this example provides a method for recovering argon:
[0042] 1890Nm to be recycled 3 / h waste argon pressure is very low, mixed with about 5% of air, first the above waste argon is pressurized to 1.45MPa (A) through argon compressor 1, enters carbon monoxide remover 2 through pipeline GAr-101, and removes carbon monoxide The catalyst is filled in the vessel 2, and carbon monoxide is catalyzed into carbon dioxide through catalytic reaction, and the CO outlet content is less than 1ppm; the waste argon gas that removes CO comes out and enters the first cooler 3 through the pipeline GAr-102 to cool to 35-40°C. After the pipeline GAr-103 is mixed with the added hydrogen, it enters the deaerator 4, and in the deaerator 4, oxygen and hydrogen react to generate water and release heat (depending on the amount of oxygen, the temperature rise will be different, in O2 When the content is not higher than 0.4%, the temperature will be 2 、H 2 ...
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