Patent ID: 9051517
Filing Date: 2015-06-09
Classification: C10C,C10G,C10J,C10K,Y02E,Y02P

Abstract:
1. A method of recovering tar from the gasification of a carbonaceous feedstock, the method comprising: (a) gasifying the carbonaceous feedstock to produce a raw gas comprising at least CO, H (b) quenching and washing the raw gas with an aqueous quench liquid to produce a solids-comprising liquid stream which is a tar water emulsion, the solids-comprising liquid stream being at a temperature of at least 150° C. and a pressure of at least 15 bar (g); (c) filtering solids from the tar water emulsion, at said temperature of at least 150° C. and said pressure of at least 15 bar (g), to provide a solids product and a tar recovery stream; and (d) treating the tar recovery stream by at least cooling and pressure expansion thereof to produce a tar stream.