technical NOTES

(Project Pridr) #1

  • TKIL NOx abatement with Multi-Stage-Combustion – Thermal NOx
    generation inside the kiln when it reaches to kiln inlet chamber is exposed to
    reducing atmosphere (Low oxygen) area by diverting the tertiary air duct
    into two lines main TAD with around 70 % air volume at meal feed pipe
    and coal firing placeso that the generated NOx can be converted from
    NOx to N2 & other duct is at upper zone of calciner i.e. in oxidation
    area for complete combustion of coal , this air duct is designed up to 30%
    of total TA and can be throttled as per requirement with the help of
    damper. This helps to reduce NOx up to 20-25 %

  • Latest generation Clinker Cooler– Latest generation clinker cooler provide us
    the condition of higher secondary and tertiary air temperature with optimum
    quantity of recuperation air so that it can help in complete combustion
    of coal inside the kiln, and reduction of oxygen inside the kiln and lower NOx
    generation inside the kiln.


It is very important to note here that if zero CO % is maintained all the time at kiln
inlet which will avoid any coating at inlet chamber, no requirement for inlet poke

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