Apparatus and method for manufacturing alternative combustion fuel for industrial boiler

Abstract

Disclosed is an apparatus for manufacturing alternative combustion fuel for an industrial boiler, which is capable of easily forming an ionic bond between water and oil, of directly conducting a combustion process using a burner without the need for a preheating process to a predetermined temperature before the combustion, and of decreasing the discharge of air pollutants, such as sulfur gas, nitrogen gas, carbon monoxide, carbon dioxide, and dioxin.

1 . An apparatus for manufacturing an alternative combustion fuel for an industrial boiler, comprising:
 a first mixer for simultaneously receiving 2˜5 wt % of an inorganic salt composition, which is weighed using a first digital scale, from an inorganic salt composition tank having an inorganic salt composition stored therein by opening a first electronic valve, and receiving 95˜98 wt % of water, which is weighed using a second digital scale, from a water tank having water stored therein by opening a second electronic valve, and stirring them through rotation of a first impeller mounted to the shaft of a first geared motor according to operation of the first geared motor to form an emulsifier;   a second mixer for simultaneously receiving 50.15˜67.85 wt % of a mixture of bunker C oil and waste oil, which is weighed using a third digital scale, from a bunker C oil and waste oil tank, including bunker C oil and waste oil mixed at a 1:1 ratio, by opening a third electronic valve, and receiving 12.60˜20.70 wt % of the emulsifier, which is weighed using a fourth digital scale, from the first mixer by opening a fourth electronic valve, and stirring them through rotation of a second impeller mounted to the shaft of a second geared motor at a predetermined rotation speed according to operation of the second geared motor to add the mixture of bunker C oil and waste oil with the emulsifier;   a boiler for heating the mixture of bunker C oil and waste oil including the emulsifier, which is supplied from the second mixer through pumping of a first geared pump, to a predetermined temperature;   a homogenizer for reducing water particles of the heated mixture of bunker C oil and waste oil including the emulsifier, which is supplied into an inlet of the homogenizer from the boiler through pumping of a first circulation pump, to a size of 1˜3 μm through rotation of a driven shaft of the homogenizer at a rotation speed of 1200˜1500 rpm, so as to ionically bond the water particles with the mixture of bunker C oil and waste oil;   a third mixer for simultaneously receiving 62.75˜88.55 wt % of the mixture of bunker C oil and waste oil including the water particles tonically bonded therewith, from an outlet of the homogenizer through pumping of a second circulation pump and receiving 19.55˜29.15 wt % of a petroleum product and petrochemical product, which is weighed using a fifth digital scale, from a petroleum product and petrochemical product tank by opening a fifth electronic valve, and stirring them through rotation of a third impeller mounted to the shaft of a third geared motor according to the operation of the third geared motor to prepare an alternative combustion fuel for an industrial boiler; and   a third geared pump for pumping the alternative combustion fuel for an industrial boiler from the third mixer into an alternative combustion fuel tank.   
   
   
       2 . The apparatus as set forth in  claim 1 , wherein the homogenizer comprises a drive motor, a drive pulley rotatably mounted to a shaft of the drive motor, a driven pulley rotating in response to rotation force of the drive motor transferred through a belt, a driven shaft having a screw conveyor mounted on an outer surface thereof while rotatably supporting the driven pulley so as to discharge and transfer the mixture of bunker C oil and waste oil including the emulsifier, which is heated to a predetermined temperature and supplied into the inlet of the homogenizer through the operation of the first circulation pump, a tapered shaft support for supporting an outer surface of a tapered head formed at a front end of the driven shaft, an outlet for discharging the alternative combustion fuel for an industrial boiler in which water particles reduced to a size of 1˜3 μm are ionically bonded with the mixture of bunker C oil and waste oil while passing through a gap between the outer surface of the tapered head of the driven shaft and an inner surface of the shaft support, a gap control member threadably mounted on the outer surface of the driven shaft for decreasing or increasing the gap between the outer surface of the tapered head of the driven shaft and the inner surface of the shaft support through clockwise or counterclockwise rotation thereof, and a cylindrical housing for accommodating the screw conveyor mounted on the outer surface of the driven shaft. 
   
   
       3 . The apparatus as set forth in  claim 1 , wherein the inorganic salt composition comprises sodium carbonate, sodium chloride, sodium bicarbonate, magnesium chloride, and calcium chloride. 
   
   
       4 . A method of manufacturing alternative combustion fuel for an industrial boiler, comprising:
 an emulsifier formation step of simultaneously supplying 2˜5 wt % of an inorganic salt composition, which is weighed using a first digital scale, into a first mixer from an inorganic salt composition tank having an inorganic salt composition stored therein by opening a first electronic valve, and supplying 95˜98 wt % of water, which is weighed using a second digital scale, into the first mixer from a water tank by opening a second electronic valve, and stirring them through rotation of a first impeller mounted to the shaft of a first geared motor according to the operation of the first geared motor, thus forming an emulsifier;   an emulsifier adding step of simultaneously supplying 50.15˜67.85 wt % of a mixture of bunker C oil and waste oil, which is weighed using a third digital scale, into a second mixer from a bunker C oil and waste oil tank including bunker C oil and waste oil mixed at a 1:1 ratio by opening a third electronic valve and supplying 12.60˜20.70 wt % of the emulsifier, which is weighed using a fourth digital scale, into the second mixer from the first mixer by opening a fourth electronic valve, and stirring them through rotation of a second impeller mounted to the shaft of a second geared motor at a predetermined rotation speed according to the operation of the second geared motor, thus adding the mixture of bunker C oil and waste oil with the emulsifier;   a heating step of supplying the mixture of bunker C oil and waste oil including the emulsifier added in the emulsifier adding step into a boiler through pumping of a first geared pump so as to heat the mixture of bunker C oil and waste oil including the emulsifier to a predetermined temperature;   an ionic bonding step of supplying the mixture of bunker C oil and waste oil including the emulsifier heated to the predetermined temperature in the heating step into an inlet of a homogenizer through pumping of a first circulation pump to reduce water particles thereof to a size of 1˜3 μm through rotation of a driven shaft of the homogenizer at a rotation speed of 1200˜1500 rpm, thus ionically bonding the water particles with the mixture of bunker C oil and waste oil; and   an alternative combustion fuel preparation step of simultaneously supplying 62.75˜88.55 wt % of the mixture of bunker C oil and waste oil including the water particles ionically bonded therewith in the ionic bonding step into a third mixer from an outlet of the homogenizer through pumping of a second circulation pump and supplying 19.55˜29.15 wt % of a petroleum product and petrochemical product, which is weighed using a fifth digital scale, into the third mixer from a petroleum product and petrochemical product tank by opening a fifth electronic valve, and stirring them through rotation of a third impeller mounted to the shaft of a third geared motor according to the operation of the third geared motor, thus preparing an alternative combustion fuel for an industrial boiler.