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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 …
Design Features And Optimization Of Profile Extrusion Dies, Abhishek Sai Erri Pradeep
Design Features And Optimization Of Profile Extrusion Dies, Abhishek Sai Erri Pradeep
Dissertations, Master's Theses and Master's Reports
This report deals with design of dies used in the plastic extrusion industry. The design methodology for extrusion dies has evolved over the years with advancement of computing technology. However, the design process is still heavily dependent on the experience of the die designer, and hence is still considered to be more of an art than science. Even for an experienced designer, the time required to design the die and perform consecutive fine tuning iterations is high. In this report, a proprietary optimization code for extrusion dies, .developed by Plastic Flow LLC, was tested and shown to be advantageous over …