|Synthesis of Liquid Fuel following Gasification of Victorian Brown Coal|
|By Bayzid Kabir Kazi, PhD Student, Monash University|
|Continued from previous page|
|The aim of my project is to provide answers to these questions. It is the first known project assessing DME synthesis following brown coal gasification.|
|The scope of my project can be categorised into three broad groups:|
- Gasification of Victorian brown coal in bench and lab-scale equipment to obtain syngas composition and gasification kinetics.
Kinetic study in a small scale thermobalance was used to assess the feasibility of catalytic gasification schemes, and a lab-scale entrained-flow reactor was used to obtain coal/char conversion and syngas composition at conditions similar to industrial ones.
The initial findings from the study have been submitted to a peer-reviewed journal.
- Assessment of commercially available catalysts for syngas to DME synthesis was performed using various analytical techniques; alongside conventional lab-based techniques using FTIR, XRF, XPS, TPD and XRD.
The synchrotron-radiation based facility at Australian Synchrotron was also used for catalyst characterisation. An article based on the assessment is currently under preparation for submission to a peer-reviewed journal.
The experiments are carried out in a high-pressure continuous flow synthesis reactor to find the DME yield and selectivity. The reactor used for the study is shown above.
Current findings shed light onto the modification of catalysts required for syngas to DME synthesis, and formulate and test an appropriate catalyst to achieve high yield and selectivity of DME.
- Thirdly, a process model was developed using Aspen Plus integrating brown coal drying, gasification, gas-cleaning, DME synthesis and product purification.
The work has been published in a peer-reviewed journal (Kabir et al, Computers and Chemical Engineering 48 (2013) 96-104).
This model identifies the optimum conditions for processing gasification and the subsequent synthesis of the syngas to DME.
|A review paper on brown coal gasification and DME synthesis technologies is currently under review in a high impact factor journal. |
The project has a student exchange component with Kyushu University in Japan. Two students from Kyushu University spent four months at our laboratory working on the gasification aspect of this project.
In addition, this project complements two other PhD projects on entrained flow gasification of brown coal – a previously unexplored area.
|For more information on this research, go to the previous page of this e-newsletter.|