A comparative study on demineralization of coals by acid-washing and solvent-extraction methods for low temperature catalytic coal gasification application

Catalytic coal gasification is an efficient way to achieve high conversion rates at low temperatures. Catalyst loss due to the reaction between the inherent mineral matter in the coal and the catalyst is a major hurdle for its practical application. The problem may be overcome by removing the mineral matter from the coal before use. Two demineralizing approaches, acid-washing and solvent-extraction methods are investigated for demineralizing the...