Regenerative thermal waste incineration system

Abstract

Provided is a regenerative thermal waste incineration system for incinerating industrial waste sludge, urban waste, food refuse and sewage sludge originating from final by-products of chemical factory or sewage treatment plant using a regenerative thermal material. The regenerative thermal waste incineration system includes first and second ceramic layers for accumulating heat from high-temperature gas in backward operation and regenerating accumulated heat to low temperature gas in forward operation, a third ceramic layer and a fourth ceramic layer for accumulating heat from high-temperature gas in forward operation and regenerating accumulated heat to low temperature gas in backward operation, a first waste inlet valve located between the first ceramic layer and the second ceramic layer for introducing waste in forward operation, a second waste inlet valve located between the third ceramic layer and the fourth ceramic layer for introducing waste in backward operation, a burner located between the second ceramic layer and the third ceramic layer for supplying heat for incinerating, a first air valve for introducing air into the system through the first ceramic layer in forward operation, and a second air valve for introducing air into the system through the fourth ceramic layer in backward operation. Since the ceramic layers are directly heated using the exhaust gas that is not brought into direct contact with raw waste, and then the regenerated heat is used for drying and incinerating the waste, the regenerative thermal waste incineration system is a cost-effective system.

What is claimed is:  
     
         1 . A regenerative thermal waste incineration system comprising: 
 first and second ceramic layers for accumulating heat from high-temperature gas in backward operation and regenerating accumulated heat to low temperature gas in forward operation;    a third ceramic layer and a fourth ceramic layer for accumulating heat from high-temperature gas in forward operation and regenerating accumulated heat to low temperature gas in backward operation;    a first waste inlet valve located between the first ceramic layer and the second ceramic layer for introducing waste in forward operation;    a second waste inlet valve located between the third ceramic layer and the fourth ceramic layer for introducing waste in backward operation;    a burner located between the second ceramic layer and the third ceramic layer for supplying heat for incinerating;    a first air valve for introducing air into the system through the first ceramic layer in forward operation; and    a second air valve for introducing air into the system through the fourth ceramic layer in backward operation.    
     
     
         2 . The regenerative thermal waste incineration system according to  claim 1 , wherein ash generated during incineration passes between each of the respective ceramic layers.  
     
     
         3 . The regenerative thermal waste incineration system according to  claim 1 , further comprising a blower for supplying combustion air, the blower installed at the front end of the system.  
     
     
         4 . The regenerative thermal waste incineration system according to  claim 1 , further comprising a blower for supply combustion air, the blower installed at the rear of the system.  
     
     
         5 . The regenerative thermal waste incineration system according to  claim 1 , wherein the first and the second air valves are 3-way valves.  
     
     
         6 . The regenerative thermal waste incineration system according to  claim 1 , wherein the first and the second air valves are 4-way valves.  
     
     
         7 . The regenerative thermal waste incineration system according to  claim 1 , further comprising a cyclone for trapping incineration residues.  
     
     
         8 . The regenerative thermal waste incineration system according to  claim 1 , further comprising a bag filter for trapping incineration residues.  
     
     
         9 . An waste incineration method using the regenerative thermal waste incineration system claimed in  claim 1 , the method comprising repeatedly performing a forward operation in which waste is introduced only through the first waste inlet valve installed at a position where combustion air is introduced, introduction of waste is interrupted after a predetermined time, untreated waste remaining the system is completely incinerated and removing ash from the system, and a backward operation in which the direction of air flow is switched and waste is incinerated by the same steps as in the forward operation.