Flame Temperature Distribution 2D (FTD-2D)

• Monitoring average and maximum temperature at furnace exit to avoid slagging of convective heat exchangers or to give alarm if the temperature falls below the minimum temperature
• Correction of strong flame-asymmetries to avoid asymmetric thermal stress and/or slagging of heat exchangers
• SNCR-control

Principle of Measurement

• Measurement of radiation intensity of CO2- absorption band or measurement of radiation intensity of luminous flames at two different wavelengths in Near Infrared
• Tomography determination of temperature
• distribution by sensors positioned in net shape

Solution

• 6-12 pyrometers Metis MF11 or Metis MY45 distributed around the furnace
• Industrial-PC for data acquisition, tomography computations, visualization, giving alarms and interface to process control
• Small optical access to furnace (15-40mm)
• Low air-consumption (approx. 2 m³/h per sensor)
• Measurement without any time-lag, t90 adjustable ( = 0,2 s)

Results:

2D-temperature distribution of flue gas at first duct, waste incinerator, fixed bed.

Without control	With control of secondary air basing on online-measurement of temperature distribution