Abstract:

After the operation of selective noncatalytic reduction (SNCR)，there is  white smoke appeared above the chimney of the power plant . By analyzing the white smoke, the composition of it is determined as ammonium chloride. With the experimental method including ammonia escape laser spectrum analyzer and flue gas automatic monitoring system, the formation characteristic of NH3Cl is analyzed. Control strategy of SNCR ammonia spraying is made so as to effectively restrain the formation of white smoke.

Key words:

SNCR, white smoke, ammonia chloride, ammonia escape laser spectrum analyzer, flue gas automatic monitoring system