Gasifiers / Pyrolysers

Gasifiers heat organic matter up to very high temperatures in low oxygen conditions to produce a flammable gas which can be burned to generate thermal or even electrical power. Gasification is a much more efficient process than natural combustion and can use biomass that would otherwise be difficult or impossible to combust. Furthermore it also produces charcoal as a by-product which can again be consumed or sold to generate an income.



Expanding into new agricultural waste streams & value chains

Fullwell Transform initially focused its research & development on Gasifier / pyrolyser heating systems, on the use of cashew shell waste as the feedstock.  However, Fullwell Transform has started to look to different agricultural waste streams as feedstock, so that the technology can be adapted for the benefit of many more agri-processing value chains.  Research has included the use of coffee husk to generate electricity at coffee mills, the use of coconut shells and press-cake to generate thermal and electrical energy at field-level copra producing units and a coconut processing factory, and the use of shea waste to generate thermal energy.

Cashew and mango processing
(2013 – present)

Fullwell Transform initially partnered with RONGEAD to develop gasification / pyrolysis based heating systems for cashew and dried mango progressing SMEs in Burkina Faso, and using cashew shell waste.

Fullwell Transform then built on this work to develop the systems in different ways, including the addition of steam-powered tunnel dryers, which have initially been proven for cashew and mango, but which have wide applicability.

Gasifiers / pyrolysers tend to have good payback periods, and the larger the agri-processing SME the better the return on investment and the quicker the payback.  For example, the first gasifer / pyrolyser that Fullwell Transform and RONGEAD partnered on at a cashew processor in Burkina Faso (which has an annual processing volume of around 1,000MT of Raw Cashew Nuts (RCN)) has been found to have a payback period of only 1-2 years following developments carried out by Fullwell Transform, including the addition of a steam-powered tunnel dryer.

This same cashew processing SME, which used to use large quantities of firewood and butane gas for its steaming and drying processes, now uses only its own cashew shell waste as fuel.  In fact, due to the efficiency of the gasification / pyrolysis process, it is only able to use around one third of its cashew shell waste.  This is what forced Fullwell Transform and RONGEAD to explore the use of gasifiers / pyrolysers in other nearby agri-processing industries (such as mango drying), so that these excess cashew shells could be utilised elsewhere to the benefit of all.