So N-Solv introduced purification equipment to separate methane from the propane before it is reused. The separated methane can also be used to heat the propane, further reducing energy costs.

因此，N - Solv公司引进了提纯设备，在重新使用回收的丙烷前从丙烷中分离出甲烷，而分离出来的甲烷也可以用来加热丙烷，这样就进一步降低的能源消耗的成本。

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There were not n-hexane, benzene, toluene and xylene, o-xylene, styrene and other organic solvent residue in the purification of apple polyphenol by the headspace gas chromatograph.

再采用顶空气相色谱法检测所得苹果多酚纯化物中正己烷、苯、甲苯、对二甲苯、邻二甲苯、苯乙烯等有机溶剂残留均低于检测限。

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