System for catalyzing and degreasing tail gas

Abstract

Systems for catalyzing and degreasing a tail gas are disclosed. In some embodiments, the system includes: an acid-inlet volatilization device, a catalytic degreasing device is connected with the acid-inlet volatilization device, a three-way catalytic converter is connected with the catalytic degreasing device, and a tail-gas heater provided at the three-way catalytic converter. The three-way catalytic converter is heated by the tail-gas heater to decompose and/or react hazardous substances. In other embodiments, the acid-inlet volatilization device includes an acid storage tank and a pump, the pump is connected with the acid storage tank, and the pump is connected with the catalytic degreasing device. The acid-inlet volatilization device includes an evaporator connected between the pump and the catalytic degreasing device. The evaporator is connected with a nitrogen gas inlet.

The disclosure claimed is: 
     
         1 . A system for catalyzing and degreasing a tail gas, comprising an acid-inlet volatilization device, a catalytic degreasing device, and a three-way catalytic converter, wherein:
 the catalytic degreasing device is connected with the acid-inlet volatilization device;   the three-way catalytic converter is connected with the catalytic degreasing device; and   the three-way catalytic converter is configured to decompose or react with hazardous substances.   
     
     
         2 . The system according to  claim 1 , wherein:
 the acid-inlet volatilization device comprises an acid storage tank and a pump;   the pump is connected with the acid storage tank; and   the pump is connected with the catalytic degreasing device.   
     
     
         3 . The system according to  claim 2 , wherein the acid-inlet volatilization device further comprises an evaporator connected between the pump and the catalytic degreasing device. 
     
     
         4 . The system according to  claim 3 , wherein the evaporator is connected with a nitrogen gas inlet. 
     
     
         5 . The system according to  claim 1 , further comprising a tail-gas heater provided around a housing of the three-way catalytic converter. 
     
     
         6 . The system according to  claim 5 , wherein the three-way catalytic converter is provided with a gas inlet and a gas outlet at top of the three-way catalytic converter near two ends. 
     
     
         7 . The system according to  claim 1 , wherein at least one three-way catalytic filter element is arranged inside the three-way catalytic converter. 
     
     
         8 . The system according to  claim 7 , wherein two three-way catalytic filter elements are arranged inside the three-way catalytic converter. 
     
     
         9 . The system according to  claim 1 , wherein:
 the catalytic degreasing device comprises a catalytic degreasing furnace, a bracket, a fan, a degreasing heater, and a bioblast;   the bracket is provided inside the catalytic degreasing furnace; and   the bioblast is placed on the bracket.   
     
     
         10 . The system according to  claim 9 , wherein:
 the fan is located on a left-side furnace wall of the catalytic degreasing furnace; and   the degreasing heater is circumferentially arranged on an inner furnace wall of the catalytic degreasing furnace.