Fuel Reformer, Engine, and Generator System

Upon receiving a partially completed synthesis rig system from Biomass Energy Company (BEC) in 2008, Prof. Depcik has overseen the completion of this experimental setup. The rig consists of a full scale reformer, Chevy 350 small block engine, Mecc Alte ECO32-2L/4 generator, and extensive data acquisition equipment. This unique rig utilizes waste glycerin (with added water) from biodiesel production in order to produce electricity through combustion of a hydrogen rich synthesis gas (syngas) in the engine/generator setup. The rig allows for three different combustion pathways: pure propane, reformed propane, and reformed glycerin. Pure propane is used in order to determine the needed fuel flow requirements in order to run the engine and generator system. Reformed propane is utilized in order to calibrate the model of the fuel reformer including ambient heat transfer. Reformed glycerin provides the final pathway as it is broken down into a hydrogen-rich syngas through partial oxidation and steam reforming in an oxygen deficient environment over a nickel/alumina catalyst (of note, this process is highly exothermic and self-sustaining). Data acquisition is completed using a custom LabVIEW program written in-house by graduate students that records flow rates, engine performance, temperatures, and pressures along with in-cylinder pressure and crank angle measurements. Future upgrades to the rig will include increasing the size of the reformer to allow for better syngas production, upgrading the generator for additional loading capabilities, and investigation into heat recovery for biodiesel production (e.g., used in the glycerin demethylation process). Moreover, the setup can be relatively easily modified in order to utilize different gaseous fuels (e.g., natural gas or biogas) directly for power, reforming, or catalytic upgrading studies.

Biodiesel Magazine: Research Scientist Derek Pickett is featured as part of an article about the next generation of biodiesel co-product research.

Representative paper: Use of Glycerin By-product from Biodiesel Production for Power Generation - doi: 10.1115/1.4039819

Mechanical research room at the Hill Engineering Research and Development Center that contains the fuel reformer, engine, and generator

Flow controllers and reformer that can convert propane, glycerin, or other biomass liquids to a high hydrogen content synthesis gas stream

Chevy 350 engine and Mecc Alte generator that provides a load on the engine for power studies

Schematic of the different flow pathways that can be employed in the system