Method and system of carbon sequestration and carbon negative power system

A semi-closed cycle carbon negative power system comprising:

• an engine subsystem;
• semi-closed-cycle (SCC) oxygen plant subsystem connectable to the engine subsystem;
• an intake subsystem connectable to the SCC oxygen plant subsystem;
• and
• a gas cleanup system (GCS) connectable to the SCC oxygen plant subsystems,
• a pyrolysis subsystem connectable to the engine subsystem;
• a waste-heat-to-power subsystem connectable to the pyrolysis subsystem;
• an exhaust water separator subsystem connectable to the waste-heat-to-power subsystem;
• an inlet hopper;
• a pyrolysis reaction chamber, the pyrolysis reaction chamber comprising:
• a pipe;
• a heating jacket surrounding the pipe;
• a separator vessel, wherein the separator vessel provides a liquid/tar product, a gaseous product, and a char product;
• a screw concentric the pipe for moving material through the pipe to the separator vessel;
• and
• a burner connectable to the heating jacket, and wherein the separator vessel is connectable to the burner and wherein the burner is designed to use liquid pyrolysis products.