We build hot gas generators that use biomass as a natural fuel, for systems that require thermal energy
Due to the variety of materials that can be considered biomass, there are several processes where biomass is transformed into a source of heat, such as those involving direct combustion and those involving thermochemical processes (gasification, pyrolysis, liquefaction, and transesterification).
Furnaces are direct combustion devices designed to ensure the complete burning of the fuel efficiently and continuously, aiming at harnessing its thermal energy released in combustion, with the maximum efficiency in converting the chemical energy of the fuel into thermal energy.
Types of furnaces
Furnaces can be classified as direct fire, where the gases resulting from combustion are mixed with ambient air and blown by a fan directly into the final application (drying grains, sawdust, etc), and indirect fire, where the gases from combustion pass through a heat exchanger that heats the drying air.
Direct fire furnace (pyrolytic burner)
Systems for heating air using solid fuels have similar characteristics in their construction and differ only in the shape, size, and location of the air inlet used as a oxidizer, in the feeding system, in the exhaust of combustion products, and can be of downward or upward flow.
Indirect fire furnace (cyclonic burner)
Commonly, furnaces designed for burning pulverized solid fuels (sawdust, coal dust, coffee husks, rice straw, etc) must have, in addition to the essential components of all furnaces, a fuel storage and feeding and distribution system.
Furnace sizing for biomass
A well-designed furnace should have minimum dimensions, but sufficient for efficient combustion with minimal excess air.