The use of biomass for generating electricity, energy and new synthetic chemicals is becoming increasingly important, due to the challenges associated with fossil fuels. For successful conversion of biomass, a range of advanced technologies are emerging that can efficiently and economically convert waste streams into bio-based feedstocks. One of the conversion intermediate products, that is produced with gasification, is synthesis gas, which can be used to produce useful chemicals or generate electricity and heat. As part of the thesis, we built a laboratory gasification device that allowed us to execute measurements of biomass gasification. The gasification device is of updraft design and is capable of gasifying a wide variety of fuels. We focused on different fuel dosing intervals and operation at different equivalence ratios. The main goals of the measurements were to obtain information about established temperature profile in the fuel bed and composition of the product gas. This information helps us to describe the conditions in the device. By analysing the data, we have confirmed the adequacy of the gasification device design and developed a method to monitor the fuel bed height based on the temperature profile in the device.
|
