A large combustion plant is a complex process with high demands in terms of availability, efficiency and emissions. BioShare’s strategy to utilize deep integration for cost efficient polygeneration is based on thorough understanding of all aspects of the combustion process. With our patented and patent pending reactors any fluidised bed boiler can be converted to a biorefinery. For large scale applications a thorough assessment of the plant including available biomass, plant configuration, layout and operation parameters is carried out and the resulting technical solution is 100 % tailormade. For low and medium size capacity a cost and space-efficient retrofit of fluidized bed boilers can be accomplished by sectioning of the bubbling bed in the combustion furnace or sand lock.
With our patented concept the bed is divided and the bed material is transferred between the two sections, whereas the gas phases above the bed remain fully isolated. By controlling bed material transport and char residence time in the volatilization stage, the production rate and product composition can be controlled.
Combined heat and power
Agricultural areas and the world’s forests, covering billions of hectares, represent a tremendous asset. Handled with respect and caution this resource can be managed to contribute to a sustainable society. Lignocellulosic and agricultural residual material currently used in the combined heat and power sector are important sources of energy, but these are also complex polymers with an inherent potential to be used for a broader value creation than merely that accomplished by heat release during combustion. Combining the production of inherent high-value chemicals, high performance industrial energy carriers or biofuels with heat and power production enables the residual streams and waste heat that inevitably follows any conversion process to be captured and utilized.
In thermochemical conversion processes, heat is applied to enable chemical reactions to take place. Combustion of biomass to release the bound chemical energy in form of heat has been managed by mankind for a quarter of a million years and also volatilization of biomass components during pyrolysis is a process known for very long time. Well controlled thermochemical conversion processes in the form of fast pyrolysis and gasification to produce liquid and gaseous compounds have emerged more recently but are today well proven technologies for transformation of biomass to other forms, enabling more efficient combustion or subsequent transformation to fuels or chemicals. Combining different thermochemical processes within a combustion plant or within the boiler itself offers potential for significant synergies and savings.