Patent ID: 6294135
Filing Date: 2001-09-25
Classification: B01D,F23G,F23J,F28D

Abstract:
A small-scale scrapped tire boiler system for heating a small-scale facility to be heated using heat generated during burning scrapped tires, the small-scale boiler system comprising:a scrapped tire burner furnace for burning the scrapped tires and producing high-temperature combustion gas;a heat exchanger receiving the high-temperature combustion gas generated in the burner furnace and a heat transfer medium circulating between the facility to be heated and the heat exchanger, a temperature of the heat transfer medium provided by the heat exchanger to the facility to be heated being higher than the temperature of the heat transfer medium received by the heat exchanger from the facility to be heated;a gas purifier receiving the combustion gas from the heat exchanger after heat exchange between the high-temperature combustion gas and the heat transfer medium, purifying the combustion gas by removing sulfurous acid gas and carbon dust contained in the combustion gas, and then discharging the purified combustion gas into the air, said gas purifier includinga gas tower having a vertical path to discharge the purified combustion gas,a water sprayer for spraying water from the upper side of the gas tower in such a manner that the sulfurous acid gas contained in the discharged combustion gas is made to dissolve in the water and the carbon dust contained in the discharged combustion gas is made to absorb in the water, the water falling downward after being spayed by the sprayer, anda neutralizer material receiving the water falling downward after being sprayed by the sprayer, the neutralizer material providing neutralized water by precipitating the sulfurous acid gas dissolved in the water into alkali salts in a sulfurous acid aqueous solution;a processing tank receiving the sulfurous acid aqueous solution, the neutralized water and the neutralizer material;at least one first discharging outlet for removing a precipitant fallen to a floor of the processing tank;a second discharging outlet for removing a material floating on an upper portion of the processing tank; anda circulator having a water outlet in a middle portion of the processing tank between said first discharging outlet and said second discharging outlet, for circulating the neutralized water to said water sprayer.