PS Herne Unit 4

Achievements

 

Widening of applicable coal range to "world coal" and reduction of primary NOx emissions, reducing OPEX for SCR reagent.

(STP @ 6% O2)

 

NOx: < 400 mg/m3

CO : < 25 mg/m3

Fuel: World Coal (a.r.)

LCV: 16,7-26,4 MJ/kg (3,9-6,3 Mcal/kg)

w: 7-18 %

N: 1,2-1,9 %

a: 6,0-30%

VM: 21-36 %

Boiler design: Tower type, Benson boiler with opposed firing system, 12 burners, 1512 t/h, 292 bar, 535/541°C (SH/RH)

• Commissioning: 1989 revamp by Steinmüller Engineering 2013

Scope of Supply

• Process engineering for LowNOx firing system
• 3D CFD modelling
• Mechanical design of burners and ductwork
• Manufacturing and installation of 12 LowNOx burners
• Optimization of pulverized fuel distribution
• Installation of over fire air and side wall air system
• Commissioning and testing