Improving downdraft gasifier stability by robust instrumentation and control systems

Design, instrumentation, and operation of a standard downdraft, laboratory-scale gasification testbed utilising novel seed-propagated hybrid Miscanthus pellets

“…Experimental data was collected automatically from the Arduino based GCU and from the instrumentation system at the points indicated in Figure 1 [20]. The temporal data was captured at 1 Hz and plotted in Excel because of the simplicity of this data capture method; given the relatively slow rate of change of the measurands this collection frequency was deemed as a sufficient resolution and conveniently reduced the data set size.…”

A novel real-time monitoring and control system for waste-to-energy gasification process employing differential temperature profiling of a downdraft gasifier

“…The temperature of the gasifier and syngas at the outlet could be monitored closely to determine the need to increase the feeding rate of fuel or provide additional heat through the addition of auxiliary fuel to maintain the operating temperature and stability of gasification process (Fronk and Reich, 2017;Nickerson et al, 2016). However, with only the determination of overall temperature of the gasifier or syngas, the effective A/F or ER ratios or fuel feeding rate cannot be accurately and quantitatively determined (Kamble et al, 2017). Therefore, it is highly challenging to identify the contributing factors and respond instantaneously and accurately.…”