Cost-effective pathway for spent catalyst recyle at Dung Quat refinery and Phu My fertilizer plant
As the number of refineries and petrochemical plants grows in Vietnam, the amount of spent catalysts and waste material is also increasing sharply. Specifically, more than 500 tons of 8 different types of spent catalysts at Phu My Fertilizer Plant and approximately 6,000 tons of 9 types of catalysts and 6 types of adsorbents at Dung Quat Refinery are disposed each year. Despite their value, most of these spent catalysts have so far been disposed of by burying in landfills. In this paper, the authors, on the basis of reviewing the different methods of spent catalyst treatment in the world and catalyst assessment in the laboratory, recommend the most suitable method for treatment of each spent catalyst of Phu My Fertilizer Plant and Dung Quat refinery in terms of technical and economic aspects.
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