Argon tail gas recycling and purifying method and system
A tail gas recovery and purification system technology, applied in chemical instruments and methods, specific gas purification/separation, inert gas compounds, etc., can solve the problems of high argon price, achieve low cost and energy consumption, increase argon production, and solve market supply and demand problem effect
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[0035] Embodiment 1: a method for recovering and purifying argon tail gas for recovering and purifying argon tail gas containing oxygen, nitrogen, carbon monoxide and hydrocarbons, comprising the following steps:
[0036] Step 1: Collect the argon tail gas from the argon gas use end, remove the solid particles in the argon tail gas to obtain the pre-filtered argon tail gas, pressurize the pre-filtered argon tail gas to the rated pressure to obtain the pressurized argon tail gas;
[0037] Step 2: catalyzing the oxygen, carbon monoxide, and hydrocarbons in the pressurized argon tail gas to obtain the catalyzed argon tail gas;
[0038] Step 3: Adsorbing carbon dioxide and water in the catalyzed argon tail gas to obtain the adsorbed argon tail gas;
[0039] Step 4: removing part of the nitrogen in the adsorbed argon tail gas to obtain the denitrified argon tail gas;
[0040] Step 5: rectifying the argon tail gas after denitrification to obtain high-purity argon.
[0041] In step...
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