APPARATUS FOR PREVENTING CLOGGING BY PULVERIZED COAL IN PULVERIZED COAL INJECTION PROCESS

摘要

PURPOSE: A pulverized coal clogging removing system in pulverized coal injection facility is provided to prevent pulverized coal clogging and early sensing pulverized coal clogging in the connection pipe by preventing pulverized coal from accumulating in a connection pipe for connecting dust collector to storage hopper. CONSTITUTION: The pulverized coal clogging removing system in pulverized coal injection facility comprises a plurality of purge nozzles(37) vertically installed on a pipe for connecting dust collector(6) to storage hopper with being spaced apart from each other in a certain distance; a nitrogen pipe for supplying nitrogen to the plurality of purge nozzles; a plurality of purge control valves(22-25) for controlling supplying and blocking of nitrogen into the plurality of purge nozzles; a plurality of flux detectors(18-21) for detecting supplying flux of nitrogen into the plurality of purge nozzles; a plurality of temperature detectors(27-30) vertically installed on the pipe for connecting the dust collector to the storage hopper with being spaced apart from each other in a certain distance so as to detect temperature inside the pipe; a temperature monitoring part(210) for monitoring whether temperature values inside the pipe measured by the plurality of temperature detectors are lower than a set temperature value or not; and a valve control part(220) for judging whether the pipe is clogged or not by opening the plurality of purge control valves step by step at certain time intervals and checking nitrogen supply amount using the plurality of flux detectors after receiving process signal of the pulverized coal injection facility.