SYSTEM FOR RECYCLING NON-CRUSHED COAL BY SUPPLYING NON-CRUSHED COAL INTO COAL SUPPLY PIPE USING HIGH PRESSURE NITROGEN GAS IN PULVERIZED COAL MANUFACTURING FACILITY

摘要

PURPOSE: To provide a recycling system of non-crushed coal in pulverized coal manufacturing facility, the apparatus capable of recycling non-crushed coal by supplying non-crushed coal discharged without pulverization into a coal supply pipe using an inert gas such as nitrogen. CONSTITUTION: In a pulverized coal manufacturing facility for transferring the pulverized coal to spots that need the pulverized coal by high pressure hot blast after crushing coal supplied into a sealed inner space of a mill housing(110), the recycling system of non-crushed coal in the pulverized coal manufacturing facility is characterized in that non-crushed coal passing through a screen having a predetermined mesh in non-crushed coal discharged into a pyrite box(10) from the mill housing is temporarily stored in a transportation tank(30) connected to the pyrite box by means of an automatic opening and closing valve(20), and the non-crushed coal is supplied into the mill housing by transferring the non-crushed coal in the transportation tank to the inner space of the mill housing using high pressure inert gas as a carrier gas after closing the automatic opening and closing valve.