High pressure process for CO2 capture, utilization for heat recovery, power cycle, super-efficient hydrogen based fossil power generation and conversion of liquid CO2 with water to syngas and oxygen

摘要

The present invention relates to a high pressure process for Pre-Combustion and Post-Combustion CO₂ capture (HP/MP/LP gasification) from a CO₂ gas stream (CO2-Stream) by way of CO₂ total subcritical condensation (CO2-CC), separation of liquid CO₂, higher pressure elevation of obtained liquid CO₂ via HP pump, super-heating of CO₂ up to high temperature for driving of a set of CO₂ expander turbines for additional power generation (CO2-PG), EOR or sequestration (First new Thermodynamic Cycle). The obtained liquid CO₂ above, will be pressurized at a higher pressure and blended with HP water obtaining high concentrated electrolyte, that is fed into HP low temperature electrochemical reactor (HPLTE-Syngas Generator) wherefrom the cathodic syngas and anodic oxygen will be performed. In particular the generated HP oxygen/syngas will be utilized for sequential combustion (“H₂/O₂-torches”) for super-efficient hydrogen based fossil power generation (Second new Thermodynamic Cycle).