Method and device for high-temperature combustion using fuel and aqueous solution of organic compound

Abstract

A method and a device are disclosed with which high-temperature combustion is attained using a fuel and an aqueous solution of an organic compound, e.g., an aqueous alcohol solution. In a combustion chamber, a fuel is sprayed and burned with a first burner to elevate the interior temperature of the combustion chamber (and/or a heat-resistant reflector disposed inside the combustion chamber) to a high temperature of 700° C. or above, and an aqueous solution of an organic compound (e.g., an alcohol-water mixture) is subsequently sprayed with a second burner into the high-temperature combustion gas obtained with the first burner, thereby causing microexplosion of water vaper and further elevating the interior temperature. As such, the fuels and organic compounds (e.g., Alcoholic aqueous solution) are fully burned, and thus the fuel cost can be reduced. Thus, high-temperature superheated steam containing a large amount of water vapor is yielded.

1 . A high-temperature combustion method using fuels and an aqueous solution of an organic compound, comprising: in a combustion chamber,
 (1) spraying and burning a fuel with a first burner to heat the interior temperature of a combustion chamber to a high temperature of 700° C. or above; and   (2) spraying subsequently an aqueous solution of an organic compound with a second burner into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature.   
     
     
         2 . A high-temperature combustion method using fuels and an aqueous solution of an organic compound, comprising:
 (1) spraying and burning in a combustion chamber a fuel with a first burner to heat the interior temperature of the combustion chamber to a high temperature of 700° C. or above;   (2) spraying subsequently in the combustion chamber an aqueous solution of an organic compound with a second burner into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature; and   (3) burning completely in a chamber for heat treatment, which is installed to be connected to the combustion chamber, the combustion gas introduced from the combustion chamber for elevating the temperature to a high temperature.   
     
     
         3 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , comprising:
 (1) spraying and burning in a combustion chamber a fuel with a first burner to heat a heat resistant reflector installed within the combustion chamber to 700° C. or above; and   (2) spraying subsequently in the combustion chamber an aqueous solution of an organic compound with a second burner into high-temperature combustion gas obtained with the first burner followed by mixing and burning, and further elevating the interior temperature to higher temperature by colliding with the surface of the heat resistant reflector being heated.   
     
     
         4 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 3 , wherein the heat resistant reflector is a metal or ceramic reflector including several holes. 
     
     
         5 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , wherein the organic compound of the aqueous solution of an organic compound has boiling point of 100° C. or less and is soluble in water. 
     
     
         6 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , wherein the organic compound of the aqueous solution of an organic compound is one or more types that are selected from water-soluble alcohols, organic acids, aldehydes, and ketones. 
     
     
         7 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , wherein the aqueous solution of an organic compound is an aqueous alcohol solution comprising 10 to 50% by volume of ethanol or methanol. 
     
     
         8 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , wherein the fuel sprayed with the first burner is any one or more types that are selected from petroleum oils like kerosene oil and light oil, organic solvents like alcohols, city gas, LPG, natural gas, hydrogen gas, and brown gas. 
     
     
         9 . The high-temperature combustion method using fuels and an aqueous solution of an organic compound according to  claim 1 , wherein the aqueous solution of an organic compound comprises hardly-decomposable toxic materials including a benzene ring as a skeleton structure like dioxin and PCB and the benzene ring of the toxic materials are detoxified by decomposition in a combustion chamber. 
     
     
         10 . A method of producing high-temperature and superheated steam by using the method described in  claim 1 . 
     
     
         11 . A device for high-temperature combustion using fuels and an aqueous solution of an organic compound, comprising
 (1) a combustion chamber,   (2) a first burner attached thereto to spray and burn a fuel in the inside of the combustion chamber so that the interior temperature of the combustion chamber is heated to a high temperature of 700° C. or above, and   (3) a second burner which is attached close to the first burner and used for spraying an aqueous solution of an organic compound into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature.   
     
     
         12 . A device for high-temperature combustion using fuels and an aqueous solution of an organic compound, comprising
 (1) a combustion chamber,   (2) a first burner attached thereto to spray and burn a fuel in the inside of the combustion chamber so that the interior temperature of the combustion chamber is heated to a high temperature of 700° C. or above,   (3) a second burner which is attached close to the first burner and used for spraying an aqueous solution of an organic compound into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature, and   (4) a chamber for heat treatment which is installed to be connected to the combustion chamber.   
     
     
         13 . The device for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 11 , wherein a means for connecting the combustion chamber and the chamber for heat treatment is a pathway with reduced diameter, which is installed between an exit of the combustion chamber and an entrance of the chamber for heat treatment. 
     
     
         14 . The device for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 11 , wherein a heat resistant reflector is disposed and installed in the combustion chamber. 
     
     
         15 . The device for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 13 , wherein the heat resistant reflector is a metal or ceramic reflector including several holes. 
     
     
         16 . The method for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 10 , wherein the organic compound of the aqueous solution of an organic compound has boiling point of 100° C. or less and is soluble in water. 
     
     
         17 . The device for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 10 , wherein the aqueous solution of an organic compound sprayed with the second burner is an aqueous alcohol solution comprising 10 to 50% by volume of ethanol or methanol. 
     
     
         18 . The device for high-temperature combustion using fuels and an aqueous solution of an organic compound according to  claim 10 , wherein the fuel sprayed with the first burner is any one or more types that are selected from petroleum oils like kerosene oil and light oil, organic solvents like alcohols, city gas, LPG, natural gas, hydrogen gas, and brown gas. 
     
     
         19 . A device for producing superheated steam using the device described in  claim 11 .