Bin system and char recovery apparatus

A bin system comprising:

• a container in which powder can be collected or stored;
• a plurality of powder discharge lines that are arranged at a predetermined inclination angle at which the powder can be discharged in the container by means of gravitational fall;
• a plurality of powder feed lines that are arranged at a predetermined inclination angle at which the powder collected or stored in the container can be fed by means of the gravitational fall;
• and
• an assist gas feed device provided at at least one of the powder discharge line and the powder feed line and assisting flow of the powder,
• wherein an assist gas flow rate which is input to the assist gas feed device is set to be not more than 10% of a flow rate syngas merged after completion of assist.

A char recovery apparatus that recovers unburned coal from syngas generated by gasifying coal, the char recovery apparatus comprising:

• a first dust collecting device that is coupled to a syngas generation line;
• a second dust collecting device that is coupled to a first gas discharge line in the first dust collecting device;
• a bin that is coupled to a first unburned coal discharge line in the first dust collecting device and a second unburned coal discharge line in the second dust collecting device;
• a plurality of unburned coal feed lines that feed unburned coal to an unburned coal return line from the bin;
• and
• an assist gas feed device that assists flow of the unburned coal gravitationally falling down each of the unburned coal discharge lines or the unburned coal feed line,
• wherein an assist gas flow rate which is input to the assist gas feed device is set to be not more than 10% of a flow rate of syngas merged after completion of assist.