50 Years Of Trust | Engineering The Next Energy ERA

Series | 8000 – 50,000 kg/hr. | Up to 83 % Combustion Efficiency
Sustainable steam generation for industries committed to carbon-neutral operations and ESG excellence.
ISOTEX reciprocating grate steam boiler is a next-generation industrial steam solution derived from proven German engineering expertise. Designed specifically to overcome the limitations of conventional package shell boilers — poor fuel efficiency, restricted fuel compatibility, and high maintenance demands — ISOTEX’s biomass boiler delivers performance that matches or outperforms equivalent hybrid boiler designs at a fraction of the fuel cost. Available from up to 50,000 kg/hr. with steam pressure options of up to 66 kg/cm², it powers the most demanding industrial processes with locally available, cost-effective biomass fuel.
At the heart of the system is ISOTEX’s proprietary multi-stage reciprocating grate combustion technology — a fully automated, high-efficiency combustion platform compatible with 100+ biomass and agro-waste fuels, including high-moisture and fibrous materials such as rice husk, EFB, palm shells, coconut shells, bagasse, wood chips, sawdust, and briquettes. The four-zone combustion process — Drying, Gasification, Combustion, and Ash Discharge — delivers combustion efficiency exceeding 95%, with a high turn-down ratio greater than 1:3 for reliable part-load performance. Special high-chromium alloy grate bars extend service life and dramatically cut maintenance costs.
As a complete turnkey EPC solution, from fuel handling to emission control, every ISOTEX biomass boiler is factory-assembled for plug-and-play installation, delivering 50% reduction in installation time and cost, a 30% smaller footprint, and 50% lower manpower requirements compared to site-erected boilers. With 100+ biomass EPC projects executed globally across India, Philippines, Kenya, and beyond, ISOTEX leads in renewable energy solutions for industries transitioning from oil and gas to carbon-neutral steam generation.
Isotex offers wood fired steam boilers across a comprehensive capacity spectrum to meet diverse industrial energy requirements.
Isotex biomass fired steam boilers are available up to 50 TPH. Contact our engineering team for tailored solutions optimised for your specific wood fuel characteristics and steam requirements.
ISOTEX Reciprocating Grate steam boiler is compatible with 100+ biomass and agro-waste fuels. The multi-stage reciprocating grate is engineered to burn a wide range of solid biomass fuels — including high-moisture and fibrous materials that conventional boilers cannot handle:
ISOTEX’s proprietary four-zone reciprocating grate progressively moves biomass fuel through distinct combustion zones — each with independent hydraulic control, separate combustion air supply, and individually modulated dampers — ensuring complete burnout of even high-moisture or fibrous fuels:
The ISOTEX biomass boiler is fully factory-assembled and tested before dispatch. Delivered in compact modules, it requires minimal civil and structural work on site:
Every ISOTEX biomass boiler includes the SMART-WIZ cloud monitoring platform — streaming real-time boiler operating data to any device, anywhere:
Built to Perform. Proven In the Field. Explore real ISOTEX Unitherm Reciprocating Grate installations showcasing proven capability across edible oil, pharmaceutical, chemical, and process industries.

High-Capacity Reciprocating Grate Boiler for Pharma in Philippines
10,000 kg/hr, 17.5 kg/cm²
Coconut Shells

Reciprocating Grate Steam Boiler for Chemical Industry in Gujarat
6000 kg, 17.54kg/cm²
Biomass Briqquttes

Reciprocating Grate Boiler for Chemical Industry in Punjab
10,000 kg/hr, 22/khcm²
Wood Waste

Reciprocating Grate Boiler for Chemical Industry in Gujarat
16000 kg/hr, 10.54 kg/cm²
Wood Chips
Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.
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