...、寻求替代物（Alternative chemistries）；二、生产过程优化（Process optimization）；三、回收再利用（Recovery and recycle）；四、破坏削减（Abatement）。
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Seven recovery and recycle experiments were carried out. It was shown that the catalytic activities of the polyoxyethylenes were basically not changed.
最后通过七次催化剂回收使用实验表明催化作用没有明显改变。
The analysis of plant design parameters is made to present a comparison between standard and stack gas recycle plants with reference to process condition and energy recovery.
对影响硫酸装置设计的各种参数进行分析，给出了尾气循环工艺与传统流程在工艺条件及能源回收等方面的对比数据。
Using asphalt coacervating facilities and electric static recovery and cleaning technology can not only clean toxic flue gas, but also recycle valuable industrial materials.
应用沥青凝聚装置和静电回收净化技术，既能净化有害烟气又能回收有价值的工业原料。
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