Macadamia Husks Fired Boiler
High-Density Biomass Heating | Harnessing the Energy of the Toughest Shells
At IndianBoilers.com, we design systems that thrive on high-energy fuels. Macadamia Husks (Shells) are a powerhouse of renewable energy. Because they are exceptionally hard and contain residual natural oils, they offer a calorific value that exceeds most woods and rivals high-grade coal.
Our Macadamia Husks Fired Boilers are custom-engineered to manage the intense thermal release of these shells. Manufactured in Ahmedabad, our boilers feature heavy-duty furnace designs that ensure complete combustion, turning this agricultural byproduct into a reliable, low-cost steam source for your industrial operations.
Key Features & Performance
- Exceptional Calorific Output: Macadamia shells have a GCV of ~4500 to 4800 Kcal/kg. This high energy density allows for rapid steam generation and excellent response to fluctuating steam loads.
- Thermal Shock Resistant Furnace: Given the high burning temperature of macadamia shells, our furnaces are built with High-Alumina Refractory Lining to prevent thermal wear and ensure a long service life.
- Advanced Grate Systems: Available with Pulsating or Stationary Grates designed with specific air-hole patterns to ensure oxygen reaches the core of the dense shells for 100% burnout.
- Automatic Screw Feeding: Because macadamia shells are uniform and flowable, they are perfect for automated feeding systems, providing the convenience of a gas boiler with the cost of biomass.
- Low Moisture, High Efficiency: These shells typically have lower moisture than other biomass, allowing our boilers to reach thermal efficiencies of 80% to 85% with heat recovery units.
- Eco-Friendly Compliance: Low ash and low sulfur content make this a clean-burning solution. Standard Multi-cyclone Dust Collectors (MDC) ensure clean stack discharge.
Core Industry Applications
The Macadamia Husks Fired Boiler is ideal for:
- Nut Processing Plants: A perfect “circular economy” solution—using the shells to power the drying and roasting of the nuts.
- Edible Oil Refineries: High-temperature steam for distillation and fractionation.
- Food & Beverage: Clean, consistent steam for canning, pasteurization, and sterilization.
- Textile & Chemical: A high-efficiency alternative for units looking to replace coal or diesel with a cleaner biomass.
Advantages
- High-Intensity Combustion: Our air-distribution systems are tuned specifically for the high oil content in macadamia shells to prevent smoke and maximize heat.
- IBR Certified Safety: Every unit is manufactured to Indian Boiler Regulations standards, ensuring maximum safety and high-pressure reliability.
- Global Design, Local Build: We export our specialized biomass boilers to major nut-growing regions worldwide, providing world-class tech at competitive Indian manufacturing costs.
Operating Range
- Capacity – 1.0 TPH to 6.0 TPH
- Fuel- Rice Husk
- Pressure- 10.54 Kg/cm² to 21 Kg/cm²
Technical Specifications
| Specification | Unit | HP-10 | HP-20 | HP-30 | HP-40 | HP-50 | HP-60 | |||
|---|---|---|---|---|---|---|---|---|---|---|
| General | ||||||||||
| Steam Output From & at 100°C | Kg/hr | 1000 | 2000 | 3000 | 4000 | 5000 | 6000 | |||
| Working Pressure | Kg/CM² | 10.54 | 10.54 | 10.54 | 10.54 | 10.54 | 10.54 | |||
| Steam Temperature | °C | 183 | 183 | 183 | 183 | 183 | 183 | |||
| No’s Passes | No’s | Three | Three | Three | Three | Three | Three | |||
| No’s of Furnace | No’s | 1 | 1 | 1 | 1 | 1 | 1 | |||
| Steam Outlet | MM | 50 | 80 | 100 | 100 | 125 | 150 | |||
| HTA | M² | 40 | 80 | 120 | 160 | 200 | 240 | |||
| Type of Crushed Fuel: Rice Husk | ||||||||||
| Boiler Efficiency with APH | ||||||||||
| On Rice Husk | % | 76 +/-2 | 76 +/-2 | 76 +/-2 | 76 +/-2 | 76 +/-2 | 76 +/-2 | |||
| Fuel Consumption | ||||||||||
| Rice Husk (3000) | Kg/hr | 231 | 462 | 692 | 923 | 1154 | 1385 | |||
| Electrical Load | ||||||||||
| Feed Water Pump | H.P. | 2.00 | 3.00 | 4.00 | 4.00 | 6.00 | 7.50 | |||
| I.D. fan without BF(Optional) | H.P. | 5.00 | 10.00 | 15.00 | 20.00 | 25.00 | 30.00 | |||
| F.D. Fan | H.P. | 3.00 | 5.00 | 7.50 | 10.00 | 15.00 | 20.00 | |||
| F.T. fan | H.P. | 3.00 | 5.00 | 7.50 | 10.00 | 15.00 | 20.00 | |||
| Screw feeder with VFD | H.P. | 1.00 | 2.00 | 2.00 | 3.00 | 2.00 | 6.00 | |||
| Total Electric Load | H.P. | 10.00 | 18.00 | 34.00 | 44.00 | 61.00 | 77.50 | |||
| NOTE: In view of constant endeavors to improve our products, we reserve the right to alter or change above specifications without prior notice. | ||||||||||
Frequently Asked Questions
Can I use whole shells, or do they need to be crushed?
Our boilers can handle both. However, crushed or chipped shells provide a more consistent surface area, leading to faster ignition and easier automation via screw conveyors.
How does the steam output compare to a wood-fired boiler?
Because macadamia shells have higher energy density and lower moisture, they produce more "intense" heat. You will typically achieve higher steam pressure faster than with standard firewood.
Is this boiler IBR certified?
Yes. IndianBoilers.com manufactures these units according to Indian Boiler Regulations (IBR), ensuring they meet all safety and high-pressure standards.
What is the thermal efficiency of a Macadamia husk boiler?
With our 3-pass design and integrated heat recovery units (like an Air Pre-heater), you can expect an efficiency of 80% to 85%.
Macadamia shells burn very hot; will this damage the boiler tubes?
We use High-Alumina Refractory lining and specialized boiler-grade steel to handle the intense radiant heat. Our design ensures proper water circulation to prevent tube overheating.
How do you prevent "Clinkering" (ash fusion)?
While macadamia ash content is low, the high heat can cause ash to melt. We use controlled primary and secondary air to keep the grate temperature below the ash fusion point.
Can the boiler handle the high oil content in the shells?
Yes. The natural oils make the fuel volatile. Our furnaces are designed with extra volume to ensure all gases are burnt inside the furnace, preventing black smoke.
Does the boiler require a specialized feeding system?
Because the shells are small and uniform, they are perfect for automated screw feeders or pneumatic injectors, which we provide as part of the package.
Can I fire other fuels if Macadamia shells are out of season?
Absolutely. Our boilers are multi-fuel capable. You can switch to wood chips, briquettes, or even coal with minor adjustments to the air-fuel settings.
How much ash does a Macadamia husk boiler produce?
Very little. The ash content is typically less than 3%, meaning you spend less time cleaning the ash pit compared to coal or wood boilers.
Do the tubes get choked with oily soot?
If the combustion air is tuned correctly, the oil burns completely. We also provide Soot Blowers as an option to keep the smoke tubes clean and maintain high heat transfer.
How often do the grates need to be replaced?
We use heavy-duty Cast Iron / Alloy Steel grates designed for high-temperature biomass. With proper operation, these grates last several years.
Is the boiler fully automatic?
Yes. We provide PLC-based control panels that automate fuel feeding and water level management, allowing the boiler to modulate based on steam demand.
What safety features are included?
Standard features include double safety valves, fusible plugs, high-pressure alarms, and "Auto-Cut" systems for the fuel feeder in case of a pressure surge.
What is the typical ROI (Return on Investment)?
If you are a nut processor using your own waste, the fuel cost is zero. Most factories recover their investment in 10 to 14 months by saving on Diesel or Coal costs.
Is burning Macadamia shells environmentally friendly?
Yes. It is a carbon-neutral process. The CO2 released during combustion is equal to the CO2 absorbed by the macadamia tree during its growth.
Does it produce a lot of smoke?
No. Our Induced Draught (ID) fans and secondary air nozzles ensure a clean, transparent stack discharge.
Are there any government subsidies for these boilers?
In many regions, switching to biomass-fired boilers qualifies for Green Energy subsidies or Carbon Credits. We can provide the necessary documentation to assist your application.
Why choose IndianBoilers.com for this specific fuel?
Based in Ahmedabad, we have extensive experience in "High-Heat" biomass engineering. We understand the metallurgy required for intense shells like Macadamia and Coconut, ensuring your boiler doesn't just work—it lasts.
Reviews
There are no reviews yet.