Electrostatic precipitator system and method

An electrostatic precipitation system comprising:

• an electrostatic precipitator;
• a main hopper disposed below the electrostatic precipitator and disposed to be in fluid communication with the electrostatic precipitator;
• a plurality of sub-hoppers disposed below the main hopper and disposed to be in fluid communication with the main hopper;
• a vertical duct disposed below each of the sub-hoppers and disposed to be in fluid communication with each of the sub-hoppers;
• and
• a water tank disposed below the vertical duct and disposed to be in fluid communication with the vertical duct, wherein each of the plurality of sub-hoppers has an angle of repose that securely receives all of the dusts descended from the main hopper without leaking to the outside and at the same time, allows the received dusts to smoothly descend along the inner walls without accumulating on the inner walls by the action of gravity alone, wherein the electrostatic precipitation system does not comprise a dust fall-hindering member between the main hopper and the water tank.

An electrostatic precipitation method comprising:

• a step (S10) of supplying an exhaust gas of high temperature of 300° C. or more to an electrostatic precipitator, and separating dusts from the exhaust gas, thereby generating clean gas;
• a step (S20) of transferring the dusts separated in the step (S10) to a main hopper by gravity;
• a step (S30) of transferring the dusts transferred to the main hopper in the step (S20) to a plurality of sub-hoppers by gravity;
• a step (S40) of transferring the dusts transferred to each of the sub-hoppers in the step (S30) to a vertical duct by gravity;
• and
• a step (S50) of introducing by gravity, into a water tank, the dusts transferred to each of the vertical ducts in the step (S40),
• wherein each of the plurality of sub-hoppers has an angle of repose that securely receives all of the dusts descended from the main hopper without leaking to the outside and at the same time, allows the received dusts to smoothly descend along the inner walls without accumulating on the inner walls by the action of gravity alone, and
• wherein the steps (S20) to (S40) are configured to allow the dusts separated in the step (S10) to fall to the water tank by gravity without being hindered by a dust fall-hindering member.