RENTECH Boiler Services specializes in the headered membrane wall retrofit of industrial boilers. The advantages of replacing front and rear refractory walls with headered membrane water walls include:
Reduce operating costs
Eliminate shutdowns due to refractory leaks and hot spots
Eliminate periodic replacement of refractory walls
Allow for faster startup and cool down
Reduce NOx emissions due to cooler operating furnace
Improve combustion control and reduce CO
Reduce leakage of unburned combustion products to the atmosphere
Any style boiler can be retrofitted. Typical upgrades by RENTECH Boiler Services include:
Replace tangent tube designs with complete membrane construction. No more hot gas bypass through the boiler casing.
Replace refractory walls with water-cooled headered membrane walls. This creates a cooler furnace that reduces the formation of NOx emissions. No more refractory walls to repair or replace.
Furnace is completely seal-welded. Eliminates seal problems between refractory walls and boiler tubes.
Replace old furnace division wall tangent tubes with complete membrane construction. Eliminates hot gas bypass through warped tangent tubes and lowers CO emission levels.
Replace refractory drum seals with welded scallop seals. This prevents eventual hot gas bypass through cracked refractory seals and maintains low CO emission levels of today's burners.
Replacing old refractory walls and refractory seals with 100% water-cooled membrane construction also eliminates on-going maintenance costs and unscheduled downtime associated with older designs. These modifications also provide quicker startup and shutdown cycles.