Rotary Drum Dryer for Biomass with 10%-15% Moisture Reduction for Wood Pellet & Briquette Production and Continuous Tightly Sealed Heat Exchange

Rotary drum dryer for biomass

1.Product Introduction

A Rotary Drum Dryer for biomass is a highly efficient thermal drying system designed to reduce the moisture content of various organic materials. Since raw biomass typically contains high moisture (often 40%–60%), which lowers its combustion efficiency and causes mold growth during storage, this dryer uses controlled hot air to quickly reduce moisture to 10%–15%, making it ideal for processing and energy production.

2.Application

• Wood Pellet & Briquette Production: Drying sawdust, wood chips, and shavings before they are pressed into high-density fuel pellets.

• Agricultural Waste Recycling: Processing straw, stalks, rice husks, bagasse, and peanut shells for bioenergy.

• Animal Waste Processing: Drying chicken manure and organic waste to be used as eco-friendly fertilizers.

• Biomass Power Generation: Preparing dry, uniform organic feedstocks for direct combustion or gasification in biomass power plants.

3.Working Principle

The dryer operates on a continuous, tightly sealed heat exchange mechanism:

• Feeding: Wet coal is continuously fed into the slightly inclined, rotating cylindrical drum.

• Cascading & Drying: Internal lifting flights and chains lift the coal and shower it through the hot air stream. This constant movement breaks up clumps and creates a uniform curtain of coal, allowing rapid heat transfer and moisture evaporation.

• Discharge & Safety Control: The dried coal slides to the lower discharge end. An induced draft fan pulls the moist air out through a cyclone and baghouse filter to capture fine coal dust. Safety systems, such as inert gas injection or explosion relief valves, are often integrated to manage combustible coal dust safely.

4.Technical Specifications