Freshly cut Napier grass has 70% moisture. For efficient combustion in a chain grate boiler, it should be field-dried or mechanically pressed to bring moisture below 25–30%.

Chain grates provide a moving bed that allows for uniform air distribution. Since palm fiber is light and Napier grass is fibrous, the constant movement of the chain grate prevents the fuel from clumping and ensures complete burnout.

Palm fiber offers ~2500–2800 Kcal/kg (at 35% moisture), while dried Napier grass offers ~3600–4000 Kcal/kg. Together, they provide a very stable and high-intensity thermal output.

Yes. All IndianBoilers.com units are manufactured under Indian Boiler Regulations (IBR), ensuring the highest safety standards for high-pressure power and process steam.

Both fuels are light and voluminous. We design extra-deep furnace arches and specialized fuel hoppers with agitators to prevent "bridging" (fuel getting stuck) and ensure a steady feed onto the grate.

Napier grass, like most grasses, has high silica and potassium. We use water-cooled grate bars or controlled primary air to keep the grate temperature below the ash fusion point, preventing the formation of hard "clinkers."

Yes. The Chain Grate Stoker is versatile. Our control system allows you to adjust the grate speed and air-to-fuel ratio depending on which fuel is currently more abundant.

Since these fuels have high volatile matter, they tend to flame up quickly. Secondary air nozzles create turbulence in the furnace to burn these gases completely, increasing efficiency and eliminating black smoke.

Napier grass must be pre-shredded to 2–3 inches. Our feeding system is designed with "anti-wrap" bearings to ensure long fibers don't tangle in the moving parts of the stoker.

Our chain grates are made of heat-resistant alloy steel. With proper lubrication of the drive chain and regular inspection of the grate bars, they are designed for 24/7 industrial operation with an annual overhaul.

The boiler is equipped with an Automatic Submerged Ash Conveyor or a dry ash screw system. As the chain grate moves, ash is automatically dumped at the end of the travel into the ash pit.

The combined ash content is typically 3% to 6%. This ash is high in potash and is often sold to farmers as a high-quality soil conditioner.

Biomass fibers are light. We install a Multi-cyclone Dust Collector (MDC) and often a Bag Filter to ensure emissions stay below 50 mg/Nm³, meeting strict environmental norms.

Because palm fiber is a "fast-burning" fuel, the boiler can reach full pressure from a warm state in 30–45 minutes. Cold starts take approximately 3–4 hours to protect the refractory.

By using Napier grass grown on marginal land and palm waste from the mill, fuel costs are drastically reduced. Most plants see a full ROI within 14 to 20 months.

It offers fuel security. You are not dependent on the timber industry; you can grow your own fuel (Napier grass) and use your own waste (Palm fiber), making you energy independent.

Yes. Our high-pressure models (up to 45 kg/cm²) are perfectly suited for driving Steam Turbines to produce electricity while providing low-pressure exhaust steam for the mill.

Our boilers feature an Automated Combustion Control (ACC) system. If a "wet patch" of fuel enters the furnace, the sensors detect the drop in temperature and automatically increase the air-preheat and grate residence time.

Based in Ahmedabad, we have specialized in biomass combustion for over two decades. We understand the specific metallurgy required to handle the corrosive elements in palm waste and the abrasive silica in Napier grass.