Molten Salt Destruction of HCB (Hexachlorobenzene) and Chlordane - Bench and Pilot Scale Tests

摘要

A research test program to demonstrate the destruction of chlorinated materials by the Molten Salt Destruction (MSD) process was conducted. In this process, combustible material and air are continuously introduced beneath the surface of a sodium carbonate-containing melt at 900-1050C. Any acidic gases such as HC1 produced from chlorinated organic compounds are neutralized and retained in the melt. The chlorinated materials tested were solid hexachlorobenzene (HCB) and liquid chlordane. The HCB was a simulant for PCBs and the chlordane was representative of liquid chlorinated industrial wastes. The overall objective of the test series was to provide molten salt process performance data and to challenge the molten salt process limits for adequate waste destruction. The program consisted of bench-scale and pilot-scale tests. Both destruction efficiencies (DE) and destruction and removal efficiencies (DRE) were determined. The federal standards for thermal process destruction of PCBs of 99.9999% destruction and 99.99% destruction for halogenated organics such as chlordane were met in both the bench-scale and pilot-scale tests.