System and method for blending combustion of organic compounds in pulverized coal boiler

The invention discloses a system and method for blending combustion of organic compounds in a pulverized coal boiler. The system comprises a material pretreatment system, a combustion system, an atomizing system, a purging and displacing system and a combustion stabilizing system. By means of the effective combination of the systems, sufficient and stable combustion of organic compounds in the pulverized coal boiler is ensured. In the blending combustion process, pressure is regulated for external organic compounds according to the lowest atomizing requirement of atomizing guns, and the external organic compounds are filtered to remove dirt at the same time and then enter the atomizing guns to be atomized; and mechanical atomization servers as the main atomizing mode and is accompanied with medium atomization, the fully-atomized organic compounds are sprayed into the boiler for combustion, combustion stabilizing covers are additionally arranged at the heads of spray guns, and disturbance occurring in medium a