Flameless Mode To Reduce No Formation - Honeywell BCU 460 Technical Information

Application
1 .1 .8 Flameless mode to reduce NO
Process Control (PCC)
AKT
VAD
BCU 465..D2
PZL
M
IC 40 + BVH
The burner control unit BCU 465 switches the burner
BIC..M ON/OFF in cycles. Burner BIC..M is controlled
without pneumatic air/gas ratio control system. The gas
supply pressure is controlled by the gas pressure regu-
lator VAD; the required burner capacity is set using the
fine-adjusting valve VMV. The capacity is controlled by
actuator IC 40 and butterfly valve BVH. An air pressure
switch upstream of the burner monitors the functioning
of the butterfly valve. In addition, air/gas ratio monitor-
ing for the zone or the furnace is required.
As soon as the safety temperature monitor STM signals
a furnace temperature of ≥ 850°C (1562°F), the burner
BCU 460, BCU 465 · Edition 11.19
formation
x
STM
VMV
VAS..L
DG
can be switched to flameless combustion (Low NO
mode) to significantly reduce NO
Switching to Low NO
pressure by the flame in the ceramic tube TSC. At a
constant gas supply pressure, the gas volume increases
by approximately 15%. In Low NO
valve moves to a smaller open position tailored to the
pressure conditions.
BIC..M
emissions.
x
mode eliminates the counter-
x
mode, the butterfly
x
x
15