Association system for heat comprehensive utilization

The invention discloses an association system for heat comprehensive utilization and belongs to the technical field of thermal power generation. The association system for heat comprehensive utilization comprises a steam turbine generator set with a regenerative system, and a carbon dioxide turbine. A carbon dioxide heating device for heating carbon dioxide is arranged in the regenerative system of the steam turbine generator set. The carbon dioxide heated by the carbon dioxide heating device enters the carbon dioxide turbine to act. According to the association system for heat comprehensive utilization, the carbon dioxide turbine is adopted, equipment in the regenerative system of the steam turbine generator set provides a heat source heating the carbon dioxide, the heated carbon dioxideenters the carbon dioxide turbine to act, the carbon dioxide turbine uses a supercritical carbon dioxide Brayton cycle, or low-quality waste heat of a coal-fired power plant is utilized, gradient utilization of heat of the po