1·This paper introduces the design concept of double closed-loop ratio control system as well as the design and the application about acetylene with hydrochloride in chloroethylene synthesis unit.
介绍了双闭环比值控制系统的设计思路以及在氯乙烯合成装置中乙炔和氯化氢比值控制系统的设计和应用，以及在设计比值控制系统时所应注意的有关事项。
2·Therefore. it is important to analyze the risk of chloroethylene reaction devices.
因此，对氯乙烯生产装置进行危险性分析具有重要的意义。
3·Synthetic resin is a high-molecular polymer produced artificially through the polymerization of low-molecular monomers such as ethylene, propylene and chloroethylene etc.
合成树脂为人工合成的高分子聚合物，是由低分子原料（如乙烯、丙烯、氯乙烯等）通过聚合反应生产的。
4·The solubility of the prepared copolymer of the chloroethylene and the acrylonitrile in an organic solvent DMF reaches more than 20 percent.
本发明制备方法制得的氯乙烯-丙烯腈共聚物，在有机溶剂dmf中溶解度达到20%以上。