Product Features

Technical specification  
1).  Temperature efficiency: ≥90%,maximum as 93%
2).  Total recovery rate of flue gas:≥90%,maximum as 92% 
3).  Comparison with non energy-saving furnace: 
1350℃ Series energy-saving rate : 40%～60%
1650℃ Series energy-saving rate : 50%～70%
4).  Comparison with traditional paired regenerative combustion technology, the energy-saving rate: 20%～30%

1. Unpaired burner with less burning and more exhausting 

 Working principle: ≥3 units of regenerative burners as one group, to make the flue gas exhausting units more than burning units, as picture. 

Explanation: When No.1 unit is burning, No.2 and No.3 units are exhausting; when switching to No.3 in burning, No.1 and No.2 units are exhausting, working like this as a cycle. 

Features 
1) . Solved the problem of furnace pressure 
  The way of less burning and more exhausting increased the flue exhausting area and controlled the furnace pressure below 50Pa. 
2). Without auxiliary bypass flue, flue gas heat recovery rate will be higher:
  After cancelled the auxiliary flue, the high temperature flue gas would go though the regenerative chamber, total flue gas heat recovery can be ≥90%,  20 to 30% more energy-saving than traditional paired regenerator. 
3). High temperature efficiency 
  In the regenerative chamber, the throughout volume of flue gas increased and throughout time prolonged, which makes the air preheating temperature 50-100℃ lower than hearth temperature only, but temperature efficiency arrives ≥92% . 
4). High combustion efficiency, low excess air ratio and good flame rigidity 
  The way of less burning and more exhausting solved the problem of low combustion efficiency, serious excess of air and unperfect flame shape and rigidity caused by enlarged air hole of traditional paired regenerator. 
5). Progressive switching, small fluctuation of furnace pressure 
  There is ≥1unit burner in exhausting normally when in switching, reducing the furnace pressure fluctuation. 

2. Progressive Switching

1). Progressive switching working principle : When ≥5units regenerative burners is a group, then 2(N)units or more will be in burning, its not switched simultaneously, but switch as 1/N cycle one by one, and only 1 pair( 2units) burners will be in switching each time.  
2). In switching, the fluctuation of furnace pressure is small:When there are ≥2units burners switched to exhausting smoothly, this situation will reduce the furnace pressure fluctuation in switching.  
3). To prevent furnace from explosion: When there is≥1unit burner switched to firing smoothly, this situation will reduce the furnace pressure fluctuation and prevent explosion . 

3. Overhead Type Regenerative Chamber 


1). To reduce storage of ash and compaction on regenerator:   
A.  Equipped with ash storage room and ash cleaning exit, and the burner is exhausting upwardly, the ash will be hard to stay on the regenerator； 
B.  The wind speed downwardly is faster than smoke speed, self-cleaning ability is perfect which can extend the regenerator cleaning cycle and working life.
C.  Take smelting furnace as example: regenerative ball cleaning cycle can be from 10-30 days extending to 1-6 months. 

           2).  Grate brick 

            Good high-temperature performance 
             Resistance of shock cold and shock heat 
             Good high-temperature strength 
             Good resistance of ash 
             Good resistance of erosion 
             Small pressure loss 
              Long working life span 

4.High temperature burner-Low NOX burning technology

Staged air supply combustion     

Cyclone flue gas recirculation
High speed flame eject and entrain flue gas       Partial flue gas recirculation 
High temperature lean burn       

Energy saving and reducing NOX emissions
Lean combustion with low oxygen content, low burning loss    
Low hearth oxygen content, low alloy burning loss  
Good flame shape and rigidity     

Environmental coordination type energy saving combustion technology