NOx Reduction Applications: Gas-Fired
Boilers
Industrial boilers
For large industrial boilers, the CRI low-temperature Selective
Catalytic Reduction (SCR) technology provides the ideal solution
for NOx reduction, since the SCR can be installed in the
stack at typical exhaust temperatures with no impact on the
boiler or its operation.
| Typical Boiler
Application for the CRI SCR System: |
| |
| Operating Temperature |
|
Typical Application |
325-450° F
(163-232° C) |
|
Range |
325-700° F
(163-371° C) |
| Pressure Drop |
|
Typical Application |
2-3 in. H2O
(5-7.5 mbar) |
|
Range |
As low as 1 in. H2O |
| Performance |
|
NOx Conversion |
>90% |
|
NH3 Slip |
5-10 ppm or lower |
Package boilers
For package boilers, CRI supplies a complete, ready-to-install
SCR skid package. Standard packages are available for the
complete range of firetube and watertube boilers.
Three standard skip packages
|
Boiler Horsepower |
Pounds/Hr. |
MmBTU/Hr. |
| Model A |
100 to 500 |
3,450 to 17,250 |
4 to 20 |
Model B |
500 to 1,000 |
17,250 to 34,500 |
20 to 42 |
| Model C |
1,000 to 2,000 |
34,500 to 69,000 |
42 to 85 |
| Larger
sizes can be custom designed to meet requirements |