A process for the production of power using a combination of a partial oxidation system and a power production system, the process comprising: combining a solid or liquid fuel and oxygen in a POX reactor under conditions sufficient to partially oxidize the fuel and form a POX stream comprising a fuel gas; quenching the POX stream through combination with a quenching fluid under conditions sufficient to form a quenched POX stream at a temperature of 400 °C or less and to solidify at least a portion of any molten solids present in the POX stream; treating the quenched POX stream so as to remove at least a portion of any solids present therein; directing the quenched POX stream to a POX heat exchanger and withdrawing a quantity of heat from the quenched POX stream by cooling the quenched POX stream to a temperature of 100 °C or less against a cooling stream and form a POX fuel gas stream; passing the POX fuel gas stream through a separator vessel and separating at least a portion of any water present in the POX fuel gas stream; compressing the POX fuel gas stream to a pressure of 12 MPa or greater; combusting the POX fuel gas in a PPS combustor to form a combustion product stream at a pressure of at least 10 MPa and a temperature of at least 800 °C; expanding the combustion product stream across a PPS turbine to generate power and form an expanded PPS combustion product stream; passing the expanded PPS combustion product stream through a PPS recuperator heat exchanger and thereby withdrawing heat from the PPS combustion product stream and forming a cooled PPS combustion product stream; optionally passing the cooled PPS combustion product stream through a water cooler; treating the cooled PPS combustion product stream in a PPS scrubber separating at least H 2 SO 4, HNO 3, or Hg and forming a recycle CO 2 stream; pressurizing the recycle CO 2 stream in a PPS compressor and forming a compressed recycle CO 2 stream; directing a portion of compressed recycle CO 2 stream to the POX heat exchanger; directing a portion of compressed recycle CO 2 stream to the PPS recuperator heat exchanger; and directing compressed recycle CO 2 stream from the POX heat exchanger to the PPS recuperator heat exchanger. combining a solid or liquid fuel and oxygen in a POX reactor under conditions sufficient to partially oxidize the fuel and form a POX stream comprising a fuel gas; quenching the POX stream through combination with a quenching fluid under conditions sufficient to form a quenched POX stream at a temperature of 400 °C or less and to solidify at least a portion of any molten solids present in the POX stream; treating the quenched POX stream so as to remove at least a portion of any solids present therein; directing the quenched POX stream to a POX heat exchanger and withdrawing a quantity of heat from the quenched POX stream by cooling the quenched POX stream to a temperature of 100 °C or less against a cooling stream and form a POX fuel gas stream; passing the POX fuel gas stream through a separator vessel and separating at least a portion of any water present in the POX fuel gas stream; compressing the POX fuel gas stream to a pressure of 12 MPa or greater; combusting the POX fuel gas in a PPS combustor to form a combustion product stream at a pressure of at least 10 MPa and a temperature of at least 800 °C; expanding the combustion product stream across a PPS turbine to generate power and form an expanded PPS combustion product stream; passing the expanded PPS combustion product stream through a PPS recuperator heat exchanger and thereby withdrawing heat from the PPS combustion product stream and forming a cooled PPS combustion product stream; optionally passing the cooled PPS combustion product stream through a water cooler; treating the cooled PPS combustion product stream in a PPS scrubber separating at least H 2 SO 4, HNO 3, or Hg and forming a recycle CO 2 stream; pressurizing the recycle CO 2 stream in a PPS compressor and forming a compressed recycle CO 2 stream; directing a portion of compressed recycle CO 2 stream to the POX heat exchanger; directing a portion of compressed recycle CO 2 stream to the PPS recuperator heat exchanger; and directing compressed recycle CO 2 stream from the POX heat exchanger to the PPS recuperator heat exchanger.