Supercritical carbon dioxide cycle power generation equipment integrated with coal-fired boiler

The invention relates to the technical field of circulating power generation, in particular to supercritical carbon dioxide circulating power generation equipment integrated with a coal-fired boiler, which comprises a power generation equipment main body, a first heat exchanger is fixedly mounted in the power generation equipment main body, and a reactor is fixedly mounted on one side of the first heat exchanger; and a preheater is fixedly installed in the power generation equipment main body, a pump is fixedly installed in the power generation equipment main body, the pump is connected with the first heat exchanger through a pipeline, and a sealing assembly matched with a preheating pipeline is installed in the power generation equipment main body. When the temperature of steam subjected to two times of heat exchange is higher than a set value, the steam with the temperature higher than the set value enters the preheater to preheat air and natural gas which are about to be combusted, so that the steam with t