Single Drum Corner pipes design, which is the only choice for a very high pressure and temperature Boiler, is being offered even for medium pressure Boiler which is highly acclaimed all over ward for it's reliability of performance & sturdiness.
The Drum does not form an integral part of the water - Steam circulation circuit, as all the water and Steam do not need to flow through the drum.
By arrangement of Top Headers, the re-circulated water does not flow to the drum, but re-circulation is thro' Top & Bottom Headers. This ensures better steam quality from the drum, as steam separation starts from Headers.
Bi-Drum Design, the Bank Tubes are expanded in to two Drums. The expanded joints in high pressure Boiler are a constant source of trouble. Where as in the Single Drum Designs, the Bank Tubes are in Panels and welded. There are easily approachable. Hence Tube replacement and maintenance in future is very easy.
Single Drum Design, the Drum is Outside the Flue gas path and there are no Tube Holes expect for opening for 4 Headers. These openings are also fully compensated which results in much thinner shell plate thickness and minimum thermal stress.
Water Wall 2.1/2" size Tubes/Pipes are spaced 1" apart. This provides larger volume of Water in our Furnace Walls and contributes to a faster load response. In addition, our uniquely designed Drum Internals can handle varying loads without circulation disruptions on carry over.
Furnace Wall Water Cooling includes side walls & Bed Coil, eliminating Refractory and its attendant Maintenance.
Gas tight setting Membrane provides the gas tight setting, which eliminates dew - point sulfur corrosion and outages caused by gas leaks. Par's Membrane Panels use larger Dia Tubes and Small Membrane spacing which provides the best combination of heat transfer efficiency & Maintenance accessibility.
Drum Internals provides high Steam purity.
Direct in Bed Feeding System: Firing is neither Under Bed, nor Over Bed but directly in the Bed. This arrangement make it possible to use wide range of Solid Fuel.
Pressurised Economiser & Air Pre Heater is provided for better waste Heat Recovery and to increase the overall Thermal efficiency of the Boiler.
IBR Economiser as well as Air Pre Heater both are incorporated to minimise dry Flue Gas losses and maximise the waste Heat Recovery.