Producing charcoal from hollow fruit bunch (EFB) fiber is not as simple as just feeding it directly into the carbonization machine. Success depends first and foremost on the pretreatment of the raw material. Proper pretreatment is the foundation for efficient and high-quality carbonization.

The primary condition is strict control of the fiber's moisture content. Excessive moisture not only consumes a large amount of heat energy for evaporation, increasing energy consumption, but also severely affects the temperature profile of the carbonization process, leading to incomplete carbonization and low-quality charcoal with insufficient calorific value. Therefore, thorough sun-drying or mechanical dehydration to reduce the moisture content to the ideal level is an essential step.

Secondly, the particle size and uniformity of the raw material are equally important. Oversized or clumped fibers will affect the uniformity of heating within the carbonization machine, causing some areas to be overheated while others remain incompletely carbonized. This necessitates appropriate crushing and screening of the EFB fiber to ensure its moderate and uniform particle size, enabling stable and continuous feeding and carbonization.

Finally, the purity of the raw materials cannot be ignored. Excessive impurities such as mud, sand, and metal shavings will not only contaminate the final charcoal product and reduce its quality, but may also wear down or corrode the internal structure of the carbonization machine at high temperatures, affecting equipment lifespan and operational safety. Therefore, effective cleaning and iron removal during the pretreatment stage is crucial.

In conclusion, creating ideal conditions for EFB fiber carbonization hinges on meticulous preparation at the front end. Effective control of moisture, particle size, and purity paves the way for subsequent carbonization processes, ultimately resulting in high-quality biochar.