Ganciclovir could be purified to more than 99.0%(HPLC) by a combination of acetone, acetic acid and water in 83.3% recovery as compared with 30% one when using water or methanol as solvent.

相比目前使用的水或甲醇溶剂纯化收率30％，发现以丙酮、乙酸、水的溶剂体系，精制更昔洛韦收率可显著提高到83.3％，高效液相色谱（HPLC）分析，产品纯度达到99.0％以上。

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This paper analyzes the problem of recovery methanol from sewage containing methanol of first natural gas treatment plant of Changqing gas field.

分析了长庆气田第一天然气净化厂甲醇回收装置运行中存在的问题。

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Result indicates that the production capacity of methanol is increased by 50% using the carbon adding and PSA hydrogen recovery process.

结果表明，采用加碳和PS A氢回收工艺，甲醇生产能力增加50%。

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