Patent ID: 9216904
Filing Date: 2015-12-22
Classification: B09B,C01B,Y02P

Abstract:
1. A process for disposing of sulfur-containing waste, comprising the steps of i) heating a sulfur-containing waste in a receptacle at a temperature of between 120 and 160° C., thereby obtaining a mixture comprising raw molten sulfur; ii) optionally separating solids, by rough screening, from said mixture obtained in step i); iii) transferring said mixture obtained in step i) optionally screened as in said step ii) from said receptacle to a separating reactor heated at a temperature of between 450 and 500° C., whereby creating sulfur vapor and sulfur-free solid phase; iv) transferring said sulfur vapor formed in step iii) from said reactor to a condenser cooled to a temperature of between 120 and 140° C., whereby obtaining molten sulfur; v) transferring said solid phase formed in step iii) from said reactor to a cooling conveyor, and collecting said phase as an ash for landfilling; and vi) removing gases from said condenser by means of an off-gas cleaner, and collecting from said condenser essentially pure sulfur.