Injection technology in comparison

Classic injection technology

SNCR process: Classic design

Temperature or load-dependent injection via several injection levels

SNCR process: Technology with tangential injection

Temperature or load-dependent injection via just one injection level only

reliable denitrification performance (up to more than 90%)
very low ammonia slip
up to 30% less reduction agent consumed
lower investment costs (because usually just 1 injection level necessary)
simple construction with little or no maintenance
very long service lives of the injection lances
flexible application possibilities
in addition to low-pressure steam (preferred), low-pressure air can also be used as a carrier medium
injection of gaseous ammoniac possible
because no water is required as a carrier medium, no decrease in boiler efficiency
higher penetration depths, better homogenisation, longer residence times