Large-Capacity Coffee Waste Pellet Press for Renewable Energy Project – United States

In the United States, spent coffee grounds are increasingly recognized as a valuable renewable biomass resource. The customer aimed to build a commercial-scale biomass pellet production facility using coffee waste as the main raw material.

To meet production targets, the project required a high-capacity, energy-efficient pellet press capable of continuous operation.

The customer is a renewable energy startup in the USA, focusing on biomass fuel production and sustainable waste recycling.

Application areas:

• Coffee waste pellet production
• Biomass fuel for industrial boilers and heating systems
• Circular economy and waste-to-energy projects

Raw material requirements:

• Moisture ≤ 20%
• Size < 10 mm

We supplied a DR678 200 kW biomass pellet press, optimized for spent coffee grounds.

Process flow:
Feeding → Forced dosing → Pellet pressing → Cutting → Downstream cooling

Equipment highlights:

• Two-roller ring die pelletizing chamber
• Heavy-duty alloy steel rollers
• Custom ring die compression ratio matched to coffee waste
• Safety shear pin and overload protection
• PLC control to reduce labor cost

• Output capacity: up to 4 t/h
• Main motor: 200 kW
• Ring die inner diameter: 688 mm
• Working width: 110 mm
• Low-noise operation with imported bearings and oil seals

Technical advantages:

• High pellet density with optimized compression ratio
• Stable transmission and low vibration
• Easy maintenance and long service life
• Suitable for large-scale commercial biomass production

The equipment was delivered as a complete pelletizing unit, ready for installation.

Customer feedback:

“This pellet press delivers excellent output and consistent pellet quality. It is ideal for large-scale coffee waste recycling and biomass energy production."