Production of Briquettes from EFB and MF of Palm Oil for Industrial Boiler Fuels

The need for biomass fuel is increasing all the time, palm kernel shells (PKS) are increasingly expensive and scarce, even though this palm kernel shell (PKS) is the main competitor for wood pellets. When the supply of PKS is limited due to high demand, the price is high, even closer to wood pellets. When this condition is achieved, wood pellets become more desirable than PKS because the quality of wood pellets is better than PKS. In addition to a more uniform shape and size, wood pellets are also drier with a moisture content of around 10%.

In this condition, actually it also opens up opportunities for briquette production. Briquettes and pellets actually use the same type of technology, namely biomass compaction or biomass densification. But briquette production is easier and cheaper than pellets. The level of flexibility of the raw material as a briquette material is also higher than that of pellets. Even some materials that are difficult to make pellets are easy to do with briquette. The size and shape of the briquettes are also more diverse as is the production technology. Briquettes for industrial boiler fuel are briquettes that can be an alternative between PKS and wood pellets.

Besides producing PKS waste, palm oil mills also produce solid waste in the form of empty fruit bunches (EFB) and mesocarp fibre (MF). A number of palm oil mills that use high efficiency boilers will produce a lot of MF. These wastes in the form of EFB and MF can be used as raw material for the production of briquettes. Industrial briquettes with puck shapes that are produced with mechanical press are not only easy to produce but also have a large capacity. The location of the briquette users, which is not too far from the palm oil mill, makes transportation costs cheap, and can compete with PKS and wood pellets.

 Industrial areas and also surrounded by a lot of palm oil mills and plantations such as in Medan, North Sumatra, Indonesia are very potential for the production of industrial briquettes. The briquettes produced are expected to have quality between the PKS and wood pellets as well as the price. The production of industrial briquettes from MF is easier than from EFB. Besides being wet, EFB also needs more effort to reach desired particle size so that it is suitable for the briquetting. Utilization of these wastes in addition to reducing environmental impact will also provide economic benefits.