Experimental study on separation of oxygen and argon by carbon molecular sieves
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摘要: 基于碳分子篩動態吸附機理,建立了分離氧氬的實驗裝置.實驗研究了流程形式、清洗比、吸附時間對碳分子篩分離氧氬過程性能的影響.結果表明,循環過程中增加產品氣清洗階段可以顯著提高解吸氣的純度.為了得到質量分數為99.0%以上的氧氣,循環過程中清洗比應控制在0.4左右,最佳吸附時間為60s.以95%氧、5%氬的混合氣作為原料氣,實驗裝置的產品氣純度可以達到99.4%,氧氣回收率為42%.Abstract: The experimental apparatus for the separation of oxygen and argon was established based on the kinetic adsorption of carbon molecular sieves. The effects of PSA cycle, rinse-ratio and adsorption duration on the performance of adsorption processes were investigated. The experimental results show that to incorporate the rinse step can increase greatly the concentration of oxygen in desorbed gas. For producing high purity oxygen, the optimum values of the rinse-ratio and adsorption duration should be about 0.4 and 60 s respectively. Under this condition, the oxygen purity up to 99.4% is obtained for the 42% recovery with the feed gas mixture of 95% oxygen and 5% argon.
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Key words:
- carbon molecular sieve /
- separation of oxygen and argon /
- PSA /
- rinse-ratio /
- high purity oxygen
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