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Utilization of biomass has become a technological research hot spots, its utilization include: biomass fermentation take advantage of the use of biomass gasification and combustion of biomass utilization Utilization . Wherein the fermentation of biomass utilization due to the low efficiency of energy conversion , the degree of lignin degradation and low temperature requirements of high winter use has become a living substances fermentation utilization of the bottleneck , the slow progress of the study ; Although the use of biomass gasification energy conversion efficiency winter can use, but due to the vaporized component of the main component is a colorless, odorless toxic gas CO , safety hazards , many places already banned the use of the technology ; use of biomass combustion due to the high energy conversion efficiency , adaptability and other advantages , the main research directions of scientific research units . In biomass direct burning, use of biomass briquettes bundles of combustion of use and biomass burning on the basis of comprehensive comparison , to carry out the the biomass bales Boiler Design and research , analysis of biomass bales combustion characteristics , design and processing of biomass bundle Boiler , four kinds of conditions the biomass bundle Boiler thermal performance test , and finally adopted the technical and economic analysis of payback period , net present value, benefit - cost ratio , internal yield and other indicators of the boiler technical and economic evaluation . Mainly to the following conclusions: 1 ) raw material bundle burn abandon dense the original biomass fuels and biomass briquette lack of combustion , combustion of biomass a better use patterns , the fuel has a moderate density , low power consumption , generate high efficiency, easy to use , etc., an important development in the direction of the combustion of biomass utilization technologies . 2) the biomass bales Boiler thermal efficiency of 73.13% , 95.21% combustion efficiency , the heat load of 35kW thermal performance characteristics of indicators have reached the design requirements . 3 ) raw material bundle Boiler exhaust in NOx , CO , SO2 , smoke and dust content in line with the relevant state boiler air emissions environmental standards , the environment clean . 4) biomass bundle Boiler manufacturing process is simple , easy to operate , biomass briquette fired boiler ( single grate ) , compared with a short payback period , benefit - cost than large , the internal high rate of return , etc. , with good economy, the market prospects .
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