摘要：The dechlorination experiments of PCBs were carried out with the different conditions of the SD particle size, the Na/Cl equivalent ratio, the PCB dropping concentration, the SD management, the stirring speed and the kind of PCBs. The fundamental operation conditions for the proper dechlorination process were clarified. The safety factors of the dechlorination process by sodium dispersion were extracted. The dechlorination reaction can be carried out stably under the conditions with reaction temperature of 160 degree centigrade, PCB dropping time of 2.5 hours, SD concentration of 15wt%, Na/Cl equivalent ratio of 1.5, the SD particle diameter of 10μm or less, and the PCB concentration of 15wt%. The activity of SD particle surface fell during the standby time and the management state of SD particles before reaction start may affect the reaction greatly. It is possible to control the size of PCB residues with the change of the stirring speed. The dechlorination process of KC1000 is shown as well as KC400 under the same reaction conditions.
关键词：Dechlorination;PCBs;Sodium Dispersion;Environmental Quality Standard
