摘要
介绍了电石法聚氯乙烯生产过程中汞的流向及聚氯乙烯发展面临的巨大挑战。探讨和分析了汞减排路线:①使用高品质低汞催化剂;②发挥除汞器的作用,力争将汞污染控制在最短流程;③应用组合吸收-常规解吸-深度解吸工艺,杜绝含汞废酸污染;④采用硫化钠类沉降剂处理含汞废水。阐述了无汞催化剂的研发现状。
The fate of mercury in production of PVC by calcium carbide method was introduced as well as the challenges for the development of PVC. Methods to decrease the loss of mercury were discussed and analyzed, which included as follows： Oadopting high-quality low mercury catalyst; （1） exerting the function of mercury eliminators in order to control the mercury pollution within the shortest process flow; （2） adopting combined absorption-conventional adsorption-depth adsorption process to eliminate the pollution of mercury-containing waste acid; （3） treating mercury- containing wastewater with sodium sulfide sedimentation agents. The current research situation of non-mercury catalysts were described.
出处
《聚氯乙烯》
CAS
2011年第10期1-5,共5页
Polyvinyl Chloride
关键词
聚氯乙烯
电石法
氯化汞催化剂
循环利用
污染防治
PVC
calcium carbide method
mercuric chloride catalyst
recycling
pollution control
