Pulverized Coal Fired Boilers
 
 

Cethar Vessels has entered into technical tie-up with M/s. Riley Power Inc, USA (group Company of M/s. Babcock Power Inc, USA) upto 600 MW unit capacity coal fired Thermal Power Projects.

  
 
 
Salient features of CVL-RPI Utility Boilers:
     
 
Single drum / Bi-drum
 
Conventional two pass design
 
Sub-critical pressure
 
Natural circulation
  Controlled combustion venturi burners
  Balanced draught
  Dry bottom
  Top supported
  Semi-out door / out door application
     
 
  In addition, CVL can also offer Tangential firing system for Utility boilers.  
     
 
Burner

Cethar can offer Riley’s wall fired burners (CCV.SRB – Burner ) for Indian utility with very low stabilizing oil requirement.
 
 
 
The features of the burner are as follows:
     
 
Venturi type coal nozzle to concentrate the coal at the centre of the burner which gives the desired coal air distribution by a coal spreader.
 
 
Vane type coal spreader at the centre for controlled mixing of coal and secondary air.
   
 
Adjustment of spreader position for desired flame shape.
   
 
Secondary air diverter promotes rapid devolatilzation of the coal in the reducing environment in Primary combustion zone which reduces the Nox formation.
   
 
Flame stabilization Ring in the burner register creates local low pressure region near burner tip helps internal recirculation, enhance the flame attachment and flame stability at low loads.
   
 
Register turning vanes in the secondary air which can be used for adjusting the secondary swirl, flame turbulence and combustion completeness.
   
 
Secondary air shroud to control the secondary air for improved burner turn down.
   
 
Facilitates for equalising fuel and air flow to each burner, for correct distribution of fuel and air.
   
 
Burner air swirl direction alignment of adjacent burners in vertical and horizontal directions avoiding flame interference to ensure smooth combustion and uniform heat flux in the furnace.