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Full-Text Articles in Mechanical Engineering
Paddle Mixer-Extrusion Reactor For Torrefaction And Pyrolysis, Stas Zinchik
Paddle Mixer-Extrusion Reactor For Torrefaction And Pyrolysis, Stas Zinchik
Dissertations, Master's Theses and Master's Reports
This work is focused on the fundamental understanding and the development of paddle mixer reactors (or modified screw augers). This work will contribute to the effort of the thermal conversion of biomass and wastes. We developed and studied two paddle systems (i) 25-mm lab-scale (up to 1 kg/hr) and (ii) 101-mm pilot-scale (up to 100 kg/hr). Thermal behavior of the two systems was studied and it was estimated that the lab-scale system has a high heating rate of up to 530 °C/s. Residence times were thoroughly measured and were determined as a function of rotation frequency and volume fraction. We …
Pyrolysis Of Fiber-Plastic Waste Blends, Shreyas Kolapkar
Pyrolysis Of Fiber-Plastic Waste Blends, Shreyas Kolapkar
Dissertations, Master's Theses and Master's Reports
The main objective of this work is to investigate fast pyrolysis of fiber and plastic feedstocks in order to understand the synergistic effect from their co-pyrolysis. In this on-going work, fiber, plastic and their blend are characterized and pyrolysis oil is produced from them in the fast batch pyrolysis reactor. Based on a heat transfer model it is shown that results of oil produced from batch reactor will be applicable to the continuous paddle reactor. From feedstock characterization, chlorine was observed particularly in the plastic feedstock. Thus, chlorine removal method using torrefaction and high shear mixing was implemented and was …