The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.
萃余液经一次性蒸发浓缩，可得到质量分数80%以上的硫酸。
Based on production practice, various factors affecting the H2O2 content in the extraction raffinate during hydrogenperoxide production by anthraquinone process were summarized.
根据生产实践，总结蒽醌法生产双氧水中影响萃余液中双氧水含量的各种因素，指出萃余液中H2O2超标的危害，找到控制萃余的有效途径。
The extracted oil output was increased after revamping aromatics extraction unit, but the raffinate oil system was not modified along with.
芳烃抽提装置改造后抽余油产量提高，但抽余油系统没有配套改造。
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