Fuel: Coal Dust, Lignite Dust, Saw Dust, Bio-Mass, Wood Chips, Agro-Waste, Rice Husk, GN Shell, DOC , Mustered Stalk, Cotton Stalk, Coffee Waste, Spice Waste Dust, Empty Palm Fruit Bunches (EPFB), Spent Bleach Earth (SBE) , Baggase
Steam Generation Capacity: 0.5 TPH up to 25 TPH
Working Pressure Upto 30 Kg/Sq.Cm.

Features

4 Pass design, ensures better heat utilisation & ultimate thermal efficiency.
Fluidised Bed Combustion furnace ensures very high combustion efficiency, up to 95% even with fuel, having very high ash & fine contents and having very low calorific value.
Straight tube in generating bank enables manual cleaning & easy inspection.
The rectangular headers are of welded type box headers with individual opening against each tube at both ends of generating bank. Hence, for cleaning & maintenance of any single tube only single door cap, weighing just 1.5 kg has to be opened.
Larger tube diameter in generating bank, i.e. 76.2 mm OD, enables easy manual cleaning.
Intermediate tube supports in the generating bank, which prevents tube sagging contributes to higher boiler life.
Wide gap in tube spacing i e. 160 mm pitch, prevents inter tube space plugging by soot deposition, which permits trouble free operation without external cleaning as clogging of tube space with soot does not take place.
Free floating front header takes care of longitudinal thermal expansion. Hence, thermal stresses are not developed during heating. This design enhances boiler life too.
Man hole opening at both sides of the drum for easier access to drum internals.
Larger diameter drum coupled with drum internal steam separators ensures dry steam even at full main steam valve opening.
Moderately larger furnace area and higher free board height, above grate, makes the boiler capable to burn low grade, high volatill3 & ash contained solid fuel efficiently without reducing rated steam generating capacity.
No inventory of spares, since nothing special is employed which is necessary to be procured urgently from us or which is not available in the free market.

Fuel: Coal Dust, Lignite Dust, Saw Dust, Bio-Mass, Wood Chips, Agro-Waste, Rice Husk, GN Shell, DOC , Mustered Stalk, Cotton Stalk, Coffee Waste, Spice Waste Dust, Empty Palm Fruit Bunches (EPFB), Spent Bleach Earth (SBE) , Baggase
Steam Generation Capacity: 3 TPH to 60 TPH
Working Pressure 33 Kg/Sqm.C. to 69 Kg/Sq.Cm.
Super Heater Steam Temp Up to 490° C

Features

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.

Steam Generation Capacity: 6 TPH to 50 TPH
Working Pressure 69 Kg/cm2
Super Heater Steam Temp 490° C

Features

Bi-Drum Water Tube Steam Boiler design, which is highly acclaimed ail over ward for it's reliability of performance & sturdiness.
Water Wall 2½" size Tubes 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 & roof, 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, leak Par's Membrane Panels use larger diameter Tubes and Small Membrane spacing which provides the best combination of heat Veneer efficiency & Maintenance accessibility.
Drum Internals provides high Steam purity and ensure positive circulation.
Soot Blowers are properly located for effective convection Bank cleaning.
Furnace inBed Cooling Coil: In Bed Tube material is BS:3059 Gr.360 Seamless, utilises higher dia, i.e. 63.5mm OD Tubes for better Thermal Storage & response.
Fluidising Air Nozzles are made up to CI with Chrome & Nickel, which provide very good heat & abrasive resistance.
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.
Larger diameter Steam Drum with effective Drum Internals ensure dry steam at Drum outlet.
Pressurised Economiser & Air Pre Heater are provided for better Waste Heat Recovery and to increase the overall Thermal Efficiency of the Boiler, (Pressurised Economiser is supplied only incase of high pressure Steam Boiler)

Steam Generation Capacity: 1 TPH to 15 TPH
Working Pressure Upto 17.5 Kg/Sq.Cm.

Advantages Of Fluidised Bed Combustion Boilers:

High Efficiency - FBC boilers can burn fuel with a combustion efficiency of over 95% irrespective of ash content. FBC boilers can operate with overall Thermal efficiency of 82% (plus or minus 2%).
Compact in Boiler Size - High heat transfer rate over a small heat transfer area immersed in the bed result in overall size reduction of the boiler.
Fuel Flexibility - FBC boilers can be operated efficiently with a variety of fuels. Even fuels like Coal , Husk , agro waste can be burnt efficiently. These can be fed either independently or in combination with coal into the same furnace.
Ability to Burn Low Grade Fuel - FBC boilers would give the rated output even with inferior quality fuel. The boilers can fire coals with ash content as high as 60% and having calorific value as low as 2,500 kcal/kg. Even carbon content of only 1% by weight can sustain the fluidised bed combustion.
Ability to Burn Fines - Coal containing fines below 6 mm can be burnt efficiently in FBC boiler, which is a very difficult to achieve in conventional firing system.
Low Corrosion and Erosion - The corrosion and erosion effects are less due to lower combustion temperature, softness of ash and low particle velocity (of the order of 1 m/sec).
Easier Ash Removal - No Clinker Formation- Since the temperature of the furnace is in the range of 750 - 900° C in FBC boilers, even coal of low ash fusion temperature can be burnt without clinker formation. Ash removal is easier as the ash flows like liquid from the combustion chamber. Hence less manpower is required for ash handling.
Less Excess Air - Higher CO2 in Flue Gas - The CO2 in the flue gases will be of the order of 14 - 15% at full load. Hence, the FBC boiler can operate at low excess air - only 20 - 25%.
Simple Operation, Quick Start-Up - High turbulence of the bed facilitates quick start up and shut own. Full automation of start up and operation using reliable equipm
Fast Response to Load Fluctuations - Inherent high thermal storage characteristics can easily absorb fluctuation in fuel feed rates. Response to changing load is comparable to that of oil fired boilers.
No Slagging in the Furnace-No Soot Blowing - In FBC boilers, volatilisation of alkali components in ash does not take place and the ash is non sticky. This means that there is no slagging or soot blowing.
Provisions of Automatic Coal and Ash Handling System - Automatic systems for coal and ash handling can be incorporated, making the plant easy to operate comparable to oil or gas fired installation.
High Reliability - The absence of moving parts in the combustion zone results in a high degree of reliability and low maintenance costs.
Reduced Maintenance - Routine overhauls are infrequent and high efficiency is maintained for long periods.
Quick Responses to Changing Demand - A fluidized bed combustor can respond to changing heat demands more easily than stoker fired systems. This makes it very suitable for applications such as thermal fluid heaters, which require rapid responses.
High Efficiency of Power Generation - By operating the fluidized bed Boiler at elevated pressure, it can be used to generate power with a back pressure steam turbine. And the steam from the turbine exhaust can be utilized for process while generating the power.