Argon production process and production line thereof

Abstract

The invention relates to an argon production process and a production line thereof. The process comprises the following steps: extracting argon fraction gas from a corresponding part of an upper towerof a fractionating tower; guiding the argon fraction gas from the bottom of a first crude argon column; taking coarse liquid argon discharged from the bottom of a second crude argon column on the upper part of the first crude argon column as a reflux liquid; leading coarse argon gas out from the top of the first crude argon column; feeding the coarse argon gas into a pure argon tower through thesecond crude argon column to obtain pure liquid argon in the bottom of the pure argon tower; and injecting a part of pure liquid argon in a liquid form into a user storage tank and pressurizing the other part of pure liquid argon in a cold box and feeding the same to a user pipe network. According to an industrial oxygen and nitrogen production process, the purity of a finished product of separated argon is relatively high through reasonable equipment arrangement, a pretreatment method and equipment as well as a reasonable process parameter design, the production efficiency is increased, and the production demand on high purity argon is fully met.

Description

technical field [0001] The invention relates to the field of gas production, in particular to an argon production process and production line thereof. Background technique [0002] Argon is a rare gas, the content of argon in the air is about 0.932% (volume), it is widely used in metallurgy, chemical industry, electronics and other industries, with the development of economy and the progress of science and technology, argon has become a As an important industrial gas, its application range is continuously expanding, and its quality requirements are getting higher and higher. The traditional argon production process is the first step to extract the argon fraction containing 8% to 10% argon from the upper column of the fractionating tower. , the crude argon with a purity of 97% to 98% is obtained by rectification in the crude argon tower; the second step is to introduce the crude argon into the argon purification device, hydrogenate the oxygen in the crude argon in the oxygen ...

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Problems solved by technology

The above-mentioned process currently occupies a large proportion in my country's chemical industry. However, in the above-mentioned process, there is a large amount of corresponding machine energy input, and the additional gas products produced by each main component of the production machine parts cannot be well realized. Utilization leads to a great waste of resources and unnecessary loss of energy, and a corresponding increase in exhaust gas emissions. On the one hand, it does not conform to the development concept of energy conservation and emission reduction in my country. The purity of argon gas is not up to standard, and the current argon production demand cannot be met

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