Based on analysis of problems in old oxygen making machine, necessary measures for local transformation are adopted and expected effect is achieved.

分析了老制氧机存在的问题，有针对性地采取了必要的局部改造措施，达到了预期目的。

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The analysis and calculation show that: the decision model of oxygen -making machine production program solves the problem of selecting oxygen -making machine in large oxygen -making system.

理论分析和实例计算表明，所提出的氧气生产方案优化决策模型解决了大型制氧系统的制氧机合理选择问题。

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Since technology and equipment amelioration of argon system of Wanli oxygen-making machine has been made, the stability and operation periods of the system are improved.

文章对万立制氧机氩气系统工艺及设备上进行了改进，提高了系统的稳定性及运行周期。

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