Compression stripping of flue gas with energy recovery

A method of remediating and recovering energy from combustion products from a fossil fuel power plant having at least one or more of a fossil fuel combustion chamber, at least one compressor, at least one turbine, at least one heat exchanger and, a source of oxygen, said power plant producing combustion products including non-condensable gases including oxygen, argon, and nitrogen and condensable vapors including water vapor and acid gases including SOX and NOX and CO2 and pollutants and recovering energy during the remediation and which recycles the combustion products and adds oxygen to support combustion, comprising:

• splitting the combustion products into a recycle stream and a remediation stream wherein the remediation stream is up to about 70% by volume of the combustion products and the recycle stream is up to about 90% by volume of the combustion products, adding sufficient oxygen to the recycle stream to support combustion and recycling the oxygenated recycle stream to the combustion chamber for combustion, changing the temperature/pressure relationship of the remediation stream by cooling, through heat exchange with thermodynamic working fluids in the power generating cycle and/or compressing and/or heating and/or expanding the remediation stream to a temperature/pressure combination relationship below the dew point of at least some of the condensable vapors to condense liquid having some add gases dissolved therein from the remediation stream and to dissolve some of the pollutants therein thereby partially to remediate the remediation stream while recovering heat from the remediation stream through heat exchange between the remediation stream and thermodynamic working fluids in the power generating cycle, repeating one or more of cooling and/or compressing and/or heating and/or expanding with condensation and separation of condensable vapors and acid gases and recovery of heat, and condensation, thereby reducing the energy required for continued compression, until the remediation stream is CO2 and H2O poor and oxygen enriched, and thereafter sending the CO2 and H2O poor and oxygen enriched remediation stream to one or more of an exhaust, and the turbine, whereby either or both of the energy of compression and the temperature of the expanded CO2 and H2O poor and oxygen enriched remediation stream is reduced, such that the remediation stream is expanded through the turbine, additional cooling condenses more of the remaining condensable gases, or the remediation stream is sent to an air separation unit additional condensable vapors are condensed and/or energy required for separation is reduced, or the CO2 and H2O poor and oxygen rich remediation stream is exhausted to the atmosphere.

A method of remediating and recovering energy from flue gas combustion products from a fossil fuel power plant having a boiler and at least one compressor, at least one turbine, at least one heat exchanger and, an air separation unit as a source of oxygen, said boiler producing flue gas combustion products having non-condensable gases including oxygen, argon, and nitrogen and condensable vapors including water vapor and acid gases including SOX and NOX and CO2 and pollutants and recovering energy during the remediation and which recycles the combustion products and adds oxygen to support combustion, comprising:

• splitting the flue gas combustion products into a recycle stream and a remediation stream wherein the remediation stream is up to about 30% by volume of the flue gas combustion products and the recycle stream is up to about 90% by volume of the flue gas combustion products, adding sufficient oxygen to the recycle stream to support combustion and recycling the oxygenated recycle stream to the boiler for combustion, changing the temperature/pressure relationship of the remediation stream by cycles of cooling, through heat exchange with thermodynamic working fluids in the power generation cycle, and/or compressing and/or heating and/or expanding the remediation stream to a temperature/pressure combination relationship below the dew point of water vapor to condense liquid having some add gases dissolved therein from the remediation stream and to entrain some of the fine particulate matter therein thereby partially to remediate the remediation stream while recovering heat from the remediation stream through heat exchange between the remediation stream and thermodynamic working fluids in or after the power generating cycle, repeating one or more of the cooling and/or compressing and/or heating and/or expanding cycles with condensation and separation of water vapor and acid gases and recovery of latent and/or sensible heat until the remediation stream is CO2 and H2O poor and oxygen enriched, and thereafter sending the CO2 and H2O poor and oxygen enriched remediation stream to at least one air separation unit and a turbine, whereby either or both of the energy of compression and the temperature of the expanded CO2 and H2O poor and oxygen enriched remediation stream is reduced, such that when the remediation stream is expanded though the turbine, additional cooling condenses more of the remaining condensable gases and expansion captures additional energy, or if the remediation stream is sent to the air separation unit additional condensable vapors am condensed and/or energy required for separation is reduced, or the CO, SOX and H2O poor and oxygen rich remediation stream is exhausted to the atmosphere.

A method of remediating and recovering energy from flue gas combustion products from a fossil fuel power plant having a boiler and at least one compressor, at least one turbine, at least one heat exchanger and, a source of oxygen, said boiler producing flue gas combustion products having non-condensable gases including oxygen, argon, and nitrogen and condensable vapors including water vapor and acid gases including SOX and NOX and CO2 and pollutants and recovering energy during the remediation and which recycles the combustion products and adds oxygen to support combustion, comprising:

• splitting the flue gas combustion products into a recycle stream and a remediation stream wherein the remediation stream is up to about 30% by volume of the flue gas combustion products and the recycle stream is up to about 90% by volume of the flue gas combustion products, preheating an oxygen containing stream by passing the oxygen containing stream in heat exchange relationship with the flue gas combustion products or mixing the oxygen with the recycled flue gas stream, adding sufficient oxygen from the preheated oxygen containing stream to the recycle stream to support combustion and recycling the oxygenated recycle stream to the boiler for combustion, initially cooling the remediation stream, below the dew point of water vapor to condense not less than about 80 mole percent of the water vapor along with dissolved and/or entrained acid gases and particulate matter and heavy metals, thereafter changing the temperature and pressure of the remediation steam by one or more cycles of cooling and/or compressing and/or heating and/or expanding the remediation stream to a temperature/pressure combination below the dew point of water vapor to condense liquid having additional acid gases dissolved therein from the remediation stream and to entrain additional fine particulate matter therein repeating at least one cooling and/or compressing and/or heating and/or expanding cycles with condensation and separation of water vapor and acid gases and recovery of heat until the remediation stream is CO2, SOX and H2O poor and oxygen enriched, and thereafter sending the CO2, SOX and H2O poor and oxygen enriched remediation stream to at least one turbine, whereby either or both of the energy of compression and the temperature of the expanded CO2, SOX and H2O poor and oxygen enriched remediation stream is reduced, such that when the remediation stream is expanded through a turbine, additional cooling condenses more of the remaining condensable gases and expansion captures additional energy, or the remediation stream is sent to an air separation unit results in additional condensable vapors condensed and/or energy required for separation is reduced, or the CO2 and H2O poor and oxygen rich remediation stream is exhausted to the atmosphere.