A heat recovery system comprising: a moving disk type tube reactor comprising: a heating tube in which an inflow port and an outflow port for allowing high-temperature gas to flow in and out are formed at both ends thereof, respectively; a first transfer tube penetrating the heating tube and having an input port for inputting waste tire chips at one end thereof; a second transfer tube disposed parallel to the first transfer tube; a driving part disposed at the other end of the first and second transfer tubes (120, 130), having a driving sprocket and a driving motor for driving the driving sprocket therein, and having a discharge port discharging oil vapor formed therein; a driven part disposed at one end of the first and second transfer tube (120, 130), having a driven sprocket formed therein, and having a discharge port discharging pyrolyzed carbon black to the outside; a chain disposed to penetrate the first and second transfer tube (120, 130) and wound on the driving and driven sprockets (142, 152) to circulate; and a plurality of disks disposed along the chain; characterized by the heat recovery system comprising further: a heat recovering and steam generating unit recovering heat from high-temperature gas discharged from the moving disk type tube reactor and generating steam using the recovered thermal energy; a steam turbine being operated by the steam generated by the heat recovering and steam generating unit; and a generator connected to the steam turbine to generate electrical energy, wherein the driving part of the moving disk type tube reactor is disposed to be movable in the longitudinal direction of the first and second transfer tubes (120, 130). a moving disk type tube reactor comprising: a heating tube in which an inflow port and an outflow port for allowing high-temperature gas to flow in and out are formed at both ends thereof, respectively; a first transfer tube penetrating the heating tube and having an input port for inputting waste tire chips at one end thereof; a second transfer tube disposed parallel to the first transfer tube; a driving part disposed at the other end of the first and second transfer tubes (120, 130), having a driving sprocket and a driving motor for driving the driving sprocket therein, and having a discharge port discharging oil vapor formed therein; a driven part disposed at one end of the first and second transfer tube (120, 130), having a driven sprocket formed therein, and having a discharge port discharging pyrolyzed carbon black to the outside; a chain disposed to penetrate the first and second transfer tube (120, 130) and wound on the driving and driven sprockets (142, 152) to circulate; and a plurality of disks disposed along the chain; a heating tube in which an inflow port and an outflow port for allowing high-temperature gas to flow in and out are formed at both ends thereof, respectively; a first transfer tube penetrating the heating tube and having an input port for inputting waste tire chips at one end thereof; a second transfer tube disposed parallel to the first transfer tube; a driving part disposed at the other end of the first and second transfer tubes (120, 130), having a driving sprocket and a driving motor for driving the driving sprocket therein, and having a discharge port discharging oil vapor formed therein; a driven part disposed at one end of the first and second transfer tube (120, 130), having a driven sprocket formed therein, and having a discharge port discharging pyrolyzed carbon black to the outside; a chain disposed to penetrate the first and second transfer tube (120, 130) and wound on the driving and driven sprockets (142, 152) to circulate; and a plurality of disks disposed along the chain; characterized by the heat recovery system comprising further: a heat recovering and steam generating unit recovering heat from high-temperature gas discharged from the moving disk type tube reactor and generating steam using the recovered thermal energy; a steam turbine being operated by the steam generated by the heat recovering and steam generating unit; and a generator connected to the steam turbine to generate electrical energy, a heat recovering and steam generating unit recovering heat from high-temperature gas discharged from the moving disk type tube reactor and generating steam using the recovered thermal energy; a steam turbine being operated by the steam generated by the heat recovering and steam generating unit; and a generator connected to the steam turbine to generate electrical energy, wherein the driving part of the moving disk type tube reactor is disposed to be movable in the longitudinal direction of the first and second transfer tubes (120, 130).