Desulfurization system using catalyst for desulfurization

A desulfurization system using a catalyst for desulfurization, comprising:

• a coal feed unit for conveying a combustible substance;
• a spray unit for spraying a catalyst for desulfurization;
• a coal pulverization unit for pulverizing the combustible substance conveyed from the coal feed unit;
• and
• a combustion unit for combusting the pulverized combustible substance,
• wherein during transfer of the combustible substance from the coal feed unit to the coal pulverization unit, the catalyst for desulfurization is sprayed using the spray unit and is mixed with the combustible substance,
• wherein the spray unit includes a catalyst storage unit for storing the catalyst for desulfurization and a catalyst transfer unit for transferring the catalyst for desulfurization,
• wherein the catalyst for desulfurization includes a liquid catalyst for desulfurization or a powder catalyst for desulfurization, wherein the spray unit sprays the liquid catalyst for desulfurization at a spray pressure of 3 to 10 kg/cm2 and an angle of 45 to 68° toward the combustible substance dropping in a rightward(90°) direction,
• the spray unit sprays the powder catalyst for desulfurization at a spray pressure of 3 to 5 kg/cm2 and an angle of 0 to 25° toward the combustible substance dropping in a rightward(90°) direction;
• and
• wherein the powder catalyst for desulfurization is fed to a screw conveyor to quantify an amount thereof before being supplied into the spray unit.