50 Years Of Trust | Engineering The Next Energy ERA
50 Years Of Trust | Engineering The Next Energy ERA
“A Technological Marvel in Edible Oil Industries” | Coal · Biomass · Oil · Gas | Up to 6 M kcal/hr | Up to 90 kg/cm²
The ISOTEX Unitherm is a high-pressure, closed-loop, natural circulation heating system — recognised as the most advanced thermosyphon boiler design in industrial process heating. Engineered over 50 years of thermal expertise in precision process heat at pressures up to 90 kg/cm²(g) and capacities up to 6 M kcal/hr.
The natural circulation principle eliminates the need for a circulation pump, and the completely sealed loop design prevents oxygen ingress, eliminating the risk of corrosion entirely. This makes the Unitherm the preferred choice for food-grade, pharmaceutical, and edible oil applications where contamination risk cannot be tolerated. Available in Coal/Biomass fired, Oil/Gas fired, and Open Steam/Condensate cycle configurations, the Unitherm is a complete turnkey heating solution
50 Years Of Trust. Engineering The Next Energy ERA — the ISOTEX Unitherm represents half a century of high-pressure thermosyphon innovation, trusted by edible oil.
Unlike conventional thermic fluid heaters, the ISOTEX Thermosyphon uses distilled water as its heat transfer medium — 100% non-toxic and inherently safe.
| Parameter | Value / Range |
|---|---|
|
Heat Output Capacity |
Up to 6,000,000 kcal/hr (6 M kcal/hr) |
|
Design Pressure |
Up to 90 kg/cm²(g) — High Pressure Certified |
|
Heat Transfer Medium |
Distilled Water (100% Non-Toxic, Food-Safe) |
|
Dryness Fraction |
≥ 98% (Guaranteed) |
|
Temperature Control Accuracy |
±1°C (Microprocessor-Based Control System) |
|
Construction Standard |
IBR / ASME / CE / BS Certified |
|
Control System |
Microprocessor-Based PLC + SMARTWIZ IoT Ready |
| Parameter | Value / Range |
|---|---|
|
Thermal Capacity |
Up to 6,000,000 kcal/hr |
|
Design Pressure |
Up to 90 kg/cm²(g) |
|
Thermal Efficiency |
Up to 80% (NCV Basis — Solid Fuel) |
|
Combustor Types |
Fluidized Bed & Reciprocating Grate |
|
Accepted Fuels |
Imported Coal, Rice Husk, Palm Shell, Wood Chips, DOC, Agro Waste |
|
Draft System |
Forced Draught + Induced Draught Fans (VFD Controlled) |
|
Emission Control |
Multi-Cyclone + Bag Filter (CPCB Compliant) |
|
Ash Handling |
Auto Dry Bottom Ash Removal System |
| Parameter | Value / Range |
|---|---|
|
Thermal Capacity |
Up to 6,000,000 kcal/hr |
|
Design Pressure |
Up to 90 kg/cm²(g) |
|
Thermal Efficiency |
Up to 93% (with Integral Economiser) |
|
Burner Type |
European Make Monobloc Burner (Riello / Weishaupt) |
|
Fuel Options |
LDO, Furnace Oil (FO), HSD, LSHS, Natural Gas, PNG, LPG |
|
Dual Fuel Option |
Gas / LDO or Gas / FO — Automatic Changeover |
|
Assembly |
Complete Workshop / Factory Assembly |
|
Complete Workshop / Factory Assembly |
PLC HMI + SMARTWIZ IoT Ready |
The ISOTEX Unitherm Thermosyphon Boiler is available in multiple firing configurations, offering unmatched fuel flexibility across solid, liquid, and gaseous fuels to match every industry’s availability, cost, and emission requirements.
NCV 5,300 kCal/kg
NCV 3,000–4,500 kCal/kg
High-silica agro-waste
4,000–4,500 kCal/kg
High-calorific fuel
Cotton stalks, groundnut shells, mustard husk, sugarcane bagasse, bamboo chips — any locally available agro-waste
Compressed agro-waste or sawdust blocks; consistent sizing enables automated feeding
Light Diesel Oil
Furnace Oil
High Speed Diesel
Low Sulphur Heavy Stock
Natural Gas
Cleanest fossil fuel — near-zero SO₂, zero particulates; highest thermal efficiency (93%+) with economiser
Automatic changeover between LDO and natural gas; uninterrupted thermic fluid heating during gas curtailment — no manual intervention required
Dual Fuel
Automatic switchover between natural gas and LDO backup for uninterrupted operation
Dual Fuel
Automatic switchover between natural gas and LDO backup for uninterrupted operation
The Ecobloc introduces patented inbed heat recovery technology and advanced FBC combustion engineering that surpasses every conventional alternative in efficiency, fuel flexibility, and long-term reliability.
| Cost Advantage Thermosyphon Benefit Heat Transfer Medium No thermic fluid cost — saves ₹10–25 Lakh per fluid replacement cycle Circulation Pump No pump = saves ₹2–5 Lakh capital + ongoing power cost eliminated Corrosion Maintenance Sealed system = zero internal corrosion repair cost | Thermosyphon Benefit |
|---|---|
|
Heat Transfer Medium |
No thermic fluid cost — saves ₹10–25 Lakh per fluid replacement cycle |
|
Circulation Pump |
No pump = saves ₹2–5 Lakh capital + ongoing power cost eliminated |
|
Corrosion Maintenance |
Sealed system = zero internal corrosion repair cost |
Built to Perform. Proven In the Field. Explore real ISOTEX Unitherm Thermosyphon installations showcasing proven capability across edible oil, pharmaceutical, chemical, and process industries.
Thermosyphon Boiler for Edible Oil Refinery in Gujarat
10 Lakh kCal/hr & 20 Lakh kCal/hr
Important Coal
Thermosyphon Steam Boiler for Edible Oil Refinery in Gujarat
12 Lakh kCal/hr
DOC, Indonesian coal
High-Pressure Thermosyphon Boiler for Edible Oil Refinery in South Africa
10 Lakh kCal/hr
Bagasse
Thermosyphon Steam Boiler for Edible Oil Refinery in Gujarat
6,000 kg/hr, 8Lakh kCal/h
Indonesian Coal
Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.
