Biomass Pyrolytic Polygeneration System: Adaptability for Different Feedstocks

Biomass pyrolytic polygeneration technology has attracted extensive attention, but to widen its applicability, the process must be adaptable for varying biomass resources. Here, the pyrolysis behavior of cotton stalks, rapeseed stalks, tobacco stems, rice husks, and bamboo were investigated. The lower heating values of all the biogas products exceeded 10 MJ/m(3). Although the feedstocks varied, the major component of the liquid oil was water (48-65%), and the similar to 50% organic components comprised acids, ketones, and phenols. Chars from the five feedstocks all exhibited good utilization potential. Subsequently, the target products of these five biomass via pyrolytic polygeneration technology were recommended as followed. Bamboo can simultaneously provide high quality gas fuel, phenols-enriched liquid oil, and carbon-based adsorbent. Rapeseed stalk and rice husk can provide high quality gas fuel and solid products, which is high quality solid fuel and silica/carbon-based adsorbent, respectively. Cotton stalk and tobacco stem provide liquid oil with high utilization potential on refining acids and N-containing compounds, and their chars may be used as good solid fuel and biochar, respectively. Meanwhile, the liquid products from rapeseed stalk and rice husk and the gas products from cotton stalk and tobacco stem were recommended to be burned as heating energy of the factory. These results suggested that this technology showed good feedstock adaptability.