50 Years Of Trust | Engineering The Next Energy ERA
50 Years Of Trust | Engineering The Next Energy ERA
83% Highest Efficiency | 40% Lower Power | 25% Reduced Footprint | Multi-Fuel Capable
Fluidized Bed Combustion with Inbed Heat Recovery
ISOTEX’s Thermal Oil Heater —represents a breakthrough in thermic fluid heating technology. By incorporating patented inbed heat recovery within a fluidized bed combustion system, this heater delivers the highest thermal efficiency in its class at 83%, setting a new industry benchmark for solid-fuel fired thermal oil heaters.
Automatic, mechanised fuel feeding ensures consistent performance in terms of temperature and heat output. The high turbulence of the fluidized bed facilitates quicker responses to changes in demand — performing like oil-fired systems in terms of responsiveness while operating on cost-effective solid fuels.
The incorporation of inbed heat recovery technology makes this thermal oil heater simply outstanding in its class. Cooling coils embedded directly within the fluidized combustion bed extract heat at the point of generation — before it can escape through the flue. This results in phenomenal advantages including 83% thermal efficiency, 40% decrease in power consumption, and 25% reduced footprint area.
ISOTEX Thermal Oil Heaters are available across a comprehensive capacity spectrum — from 30 lac kCal/hr. to 1.5cr kCal/hr. — to meet diverse industrial high-temperature heating requirements.
| Parameter | Value / Range | Unit / Notes |
|---|---|---|
|
Heat Output Capacity |
30 lac kCal/hr. to 15 million |
kg/hr |
|
30 lac kCal/hr. to 15 million |
Up to 280 |
°C (Standard) |
|
Max. TF Outlet Temperature |
Up to 300+ |
°C (Custom / On Request) |
|
Efficiency on Fuel NCV |
83 +/- 2% (BS 845, Indirect) |
% |
The Thermal Oil Heater’s fluidized bed combustion technology enables efficient burning of a wide range of solid fuels — including high-ash and low-grade fuels that conventional heaters cannot handle effectively.
Primary fuel with Net Calorific Value (NCV) of 5,300 kcal/kg. Delivers consistent heat output with lower ash content and superior combustion characteristics in the fluidized bed. Fuel consumption ranges from 227 kg/hr (10 Lac kcal/hr) to 682 kg/hr (30 Lac kcal/hr).
Biomass fuel option with NCV of 3,300 kcal/kg. The system is uniquely capable of burning high-ash biomass fuels like rice husk with over 98% combustion efficiency. Consumption ranges from 365 kg/hr to 1,100 kg/hr across the model range.
Indian coal with higher ash content is handled effectively by the fluidized bed — the bed media (sand) catches unburnt particles and provides sufficient residence time for complete combustion.
The system’s ability to burn high fines and low-grade fuels with high ash content is a key differentiator — reducing fuel procurement costs significantly while maintaining thermal efficiency.
Fully automatic, mechanised fuel feeding system
Consistent temperature and heat output under varying demand conditions
Eliminates manual feeding inconsistencies and labour dependency
Quick response to load fluctuations matching oil-fired system responsiveness
The combines German engineering heritage (technical know-how from ERK Eckrohrkessel GmbH, Germany) with ISOTEX’s 48+ years of thermal engineering expertise to deliver features that set new performance benchmarks.
The defining innovation of the Series. Cooling coils embedded directly within the fluidized combustion bed extract heat at the point of generation — before it can escape through the flue. Heat extraction from combustor by cooling coils reduces excess air requirement for combustion and controls bed temperature. This results in 83% thermal efficiency, the highest in the thermic fluid heater category.
By extracting heat directly from the combustion bed, the requires significantly less air handling. Reduced air requirement leads to lesser handling of air which, in turn, provides the advantage of reduced power consumption. The VCL-IF-2000 operates at just 52 kW compared to 78 kW for a conventional heater of the same capacity.
The integrated online soot blower system ensures continuous cleaning without shutdowns. This results in very low choking and minimal efficiency variation compared to manually cleaned conventional heaters — maintaining peak performance throughout the operating cycle.
Innovative compact engineering design reduces the installation area by 25% compared to conventional thermic fluid heaters. Ideal for brownfield projects, retrofit applications, and plants with floor space constraints — without compromising on capacity or efficiency.
The high turbulence of the fluidized bed enables rapid response to load fluctuations — matching the responsiveness of oil-fired systems. Combined with automatic mechanised fuel feeding, the heater maintains consistent temperature and heat output under varying demand conditions.
Built to Perform. Proven in the Field. Explore ISOTEX thermal oil heater installations across leading process manufacturing plants.
High-Capacity Thermal Oil Heater for Polymers Industry in Gujarat
30 Lakh kCal/hr. x 3
Important Coal ,Lignite
Thermal Oil Heater for Chemical Industry in Maharashtra
30 Lakh kCal/hr. x 3
Corn Cobs
Thermal Oil Heater for Industry in City
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Thermal Oil Heater for Industry in City
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Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.
