Yes. Since husks are naturally separated during dry processing, they are usually ready for combustion. However, if they are wet from the "wet process," they must be dried to below 15% moisture for efficient burning.

On average, 1 kg of coffee husks can produce approximately 2.8 to 3.2 kg of steam, depending on the boiler's design and husk moisture.

Yes. At IndianBoilers.com, we manufacture these boilers in full compliance with Indian Boiler Regulations (IBR), ensuring safety and legal reliability.

Husks are lighter and burn much faster than wood or coal. Because they have a high volatile content, they require a larger furnace volume and precision air control to prevent smoke.

Coffee husks are very light and flowable. We use VFD-controlled screw feeders or pneumatic injectors to ensure a steady, "drip-feed" of husks into the furnace, preventing pressure surges.

Because husks are light, fine ash can easily be carried into the tubes. We design our boilers with Multi-cyclone Dust Collectors (MCDC) and specialized baffles to capture ash before it enters the stack.

Yes. Coffee parchment is very similar to the husk and can be fired alone or mixed with other biomass residues.

For small units, a Fixed Grate works well. For larger industrial units (above 3 TPH), we recommend a Reciprocating Grate to ensure uniform air distribution and automatic ash discharge.

Spent coffee grounds are much wetter (~50% moisture). Our specialized Internal Furnace boilers can handle grounds if they are pre-dried or co-fired with dry husks.

Yes, if the husks contain long fibers or twigs. We include a screening system at the hopper to ensure only clean husks enter the automated feeder.

Coffee husk has a moderate ash content (approx. 5–8%). In a manual system, cleaning once per shift is typical; in our automated systems, the ash is removed continuously.

Coffee ash has a high potassium content, which can melt at high temperatures. We use forced-draft air cooling for the grates to keep temperatures below the ash fusion point.

From a cold start, our boilers typically reach operating pressure in 45 to 60 minutes, thanks to the fast-burning nature of the husks.

Our fully automated models require minimal supervision. The PLC monitors water levels, steam pressure, and fuel feed, requiring only periodic safety checks.

Only if the air-to-fuel ratio is wrong. We provide secondary air nozzles that create a "cyclonic" flame, ensuring all volatiles are burnt completely for a clear stack.

Most coffee mills pay for their boiler in 8 to 12 months by eliminating the need for purchased wood, coal, or diesel.

In India, many biomass-based projects qualify for IREDA or MNRE subsidies. We provide all the necessary technical documentation to assist your application.

With proper water treatment and routine cleaning, our boilers are built to provide reliable service for 15 to 20 years.

Located in Ahmedabad, we have optimized our furnace designs specifically for the coffee-growing regions of South India and Africa. We offer the perfect balance of IBR safety and biomass efficiency.