Environment-friendly circulating combustion-supporting system and method based on jet flow principle calcined petroleum coke reaction

The invention discloses an environment-friendly circulating combustion-supporting system and method based on a jet flow principle calcined petroleum coke reaction, and mainly relates to the field of carbon production. Comprising an air inlet pipeline, an ejector assembly connected with the air inlet pipeline and a connecting pipeline connected with an ejector pipeline. The jet device assembly comprises a jet device pipeline, a nozzle connected with the air inlet pipeline, an air inlet formed in one end of the jet device pipeline, and a combustion improver adding opening communicated with the outer wall of the jet device pipeline; a nozzle is arranged at the air inlet, a flow speed control device is arranged in the nozzle, a suction chamber is arranged between the nozzle and the combustion improver adding port, and a reducing section is arranged between the suction chamber and the connecting pipeline; the connecting pipeline and the nozzle are both located in the furnace body, a diffusion section is arranged i