A Fundamental Study on Redox Behaviour of Oxygen Carriers in Chemical Looping Combustion. Our goal here is to acquire fundamental knowledge about the redox behaviour of metal oxide oxygen carriers which, arguably, underpins the feasibility of the Chemical Looping Combustion (CLC) concept. Although the proposed work is fundamental and will contribute to the advancement of knowledge, the results will have immediate practical applications in power generation industry at both national and internatio ....A Fundamental Study on Redox Behaviour of Oxygen Carriers in Chemical Looping Combustion. Our goal here is to acquire fundamental knowledge about the redox behaviour of metal oxide oxygen carriers which, arguably, underpins the feasibility of the Chemical Looping Combustion (CLC) concept. Although the proposed work is fundamental and will contribute to the advancement of knowledge, the results will have immediate practical applications in power generation industry at both national and international levels. This should significantly contribute to the Australian Government's efforts in producing world class solutions for abatement of greenhouse emissions (Research Priority 1: An Environmentally Sustainable Australia, Priority Goal 1.4 - Reducing and capturing emissions in transport and energy generation).Read moreRead less
Selective generation of hydrogen from biomass and waste fuels. Biomass fuels account for 14% of global energy supply. This is likely to increase in future as the population increases, energy demand rises, cheap oil and coal reserves are depleted, and the effects of global warming become more readily visible. In Australia the development of a sustainable hydrogen economy is a national priority. The hydrogen economy could bring about improved energy security, substantially reduced greenhouse gas e ....Selective generation of hydrogen from biomass and waste fuels. Biomass fuels account for 14% of global energy supply. This is likely to increase in future as the population increases, energy demand rises, cheap oil and coal reserves are depleted, and the effects of global warming become more readily visible. In Australia the development of a sustainable hydrogen economy is a national priority. The hydrogen economy could bring about improved energy security, substantially reduced greenhouse gas emissions, improved energy efficiency and improved air quality. This proposal directly addresses this challenge by investigating the science underpinning a large-scale sustainable hydrogen synthesis process using biomass and waste fuels. Read moreRead less
A Fundamental Investigation of the Thermoplastic Behaviour and Porous Structural Evolution of Coke and Char Particles. During heating, solid fuel particles undergo complex physical changes resulting in sophisticated structures in the residual material (coke and char) which influence the operational performance of these materials in ironmaking and power generation processes. The mechanistic understanding of the evolution of physical structure and the coupled role of gas evolution has not been wel ....A Fundamental Investigation of the Thermoplastic Behaviour and Porous Structural Evolution of Coke and Char Particles. During heating, solid fuel particles undergo complex physical changes resulting in sophisticated structures in the residual material (coke and char) which influence the operational performance of these materials in ironmaking and power generation processes. The mechanistic understanding of the evolution of physical structure and the coupled role of gas evolution has not been well established. An interpretive and predictive mechanism to describe the process will be developed through experimental observations and mathematical modelling. The project will provide fundamental new insights and understanding of operational issues concerning the complex behaviour of solid fuel residues in coal based industrial processes.Read moreRead less
Self-heating of porous lignocellulosic and coal particles. This project develops models for spontaneous heating of materials, which have substantial value to Australian economy, and whose self-heating behaviour have led to loss of life and significant material losses in industries processing these materials. The results will be immediately applicable to evaluate risks of spontaneous ignition in process plants in a more rigorous manner than performed presently. Furthermore, findings of this inv ....Self-heating of porous lignocellulosic and coal particles. This project develops models for spontaneous heating of materials, which have substantial value to Australian economy, and whose self-heating behaviour have led to loss of life and significant material losses in industries processing these materials. The results will be immediately applicable to evaluate risks of spontaneous ignition in process plants in a more rigorous manner than performed presently. Furthermore, findings of this investigation will allow considerable improvement in estimating green house gas emissions as a consequence of spontaneous combustion.Read moreRead less
Carbon surface oxides: the key to understanding the chemical rate of carbon combustion. This project employs a unique combination of experimental measurements and fundamental quantum chemical calculations to study the oxides which form on the surface of carbon as it burns. Our objective is to develop a quantitative model for the kinetics of carbon combustion which will be a profound improvement over existing approaches. Such a model would provide the basis for the improved prediction of carbon c ....Carbon surface oxides: the key to understanding the chemical rate of carbon combustion. This project employs a unique combination of experimental measurements and fundamental quantum chemical calculations to study the oxides which form on the surface of carbon as it burns. Our objective is to develop a quantitative model for the kinetics of carbon combustion which will be a profound improvement over existing approaches. Such a model would provide the basis for the improved prediction of carbon combustion and gasification in current (coal-burning) power generation appliances, as well as catering for new approaches to lowering greenhouse emissions which also depend on the combustion and gasification of carbon as coal, biomass or refuse-derived fuel.Read moreRead less
The Effects of Pyrolysis Conditions on Combustion and Gasification Reactivities of Biomass Chars and the Quality of Their Ash. Considerable efforts are being made to minimise the environmental impacts of fossil fuels by utilising renewable energy sources like biomass. Many of the challenges associated with the thermal conversion of biomass relate to its char characteristics. The aim of this project is to gain a fundamental understanding about the impact of reaction conditions during the pyrolyti ....The Effects of Pyrolysis Conditions on Combustion and Gasification Reactivities of Biomass Chars and the Quality of Their Ash. Considerable efforts are being made to minimise the environmental impacts of fossil fuels by utilising renewable energy sources like biomass. Many of the challenges associated with the thermal conversion of biomass relate to its char characteristics. The aim of this project is to gain a fundamental understanding about the impact of reaction conditions during the pyrolytic stage on the structural and compositional transformations of the resultant char, its combustion and gasification reactivities, and the release of inorganic matter and ash formation. This holistic and integrated approach should reveal the underlying science necessary to support existing and future biomass use.Read moreRead less
Fundamental Fire Properties From Extinction and Piloted Ignition Experiments of Solid Fuels. Current approval methods for determining fire properties of construction materials are often incorrect in yielding properties that can be used in situations removed from test conditions. The main aim of this project is to obtain fundamental fire properties by examining the ignition and extinction processes of diffusion flames near solid surfaces. The project undertakes detailed study of flame spread in ....Fundamental Fire Properties From Extinction and Piloted Ignition Experiments of Solid Fuels. Current approval methods for determining fire properties of construction materials are often incorrect in yielding properties that can be used in situations removed from test conditions. The main aim of this project is to obtain fundamental fire properties by examining the ignition and extinction processes of diffusion flames near solid surfaces. The project undertakes detailed study of flame spread in the direction opposite to the flow of air, which defines the initial fire growth and is important in fire propagation. Results from this project will provide scientific underpinning for the development of approval standards for new materials, which are needed to support Australia's transition from prescriptive to performance based building codes.Read moreRead less
A Comprehensive Kinetic Model for Sulfur Reactions in Combustion, Gasification, and Chemical Processing. Sulfur chemistry in high temperature processes is poorly understood, leading to uncertainties in the design of these processes and in the control of their emissions. In particular, new approaches to lowering greenhouse emissions which depend on the combustion and gasification of coal, biomass, or refuse-derived fuel, such as integrated gasification combined cycle processes, are especially aff ....A Comprehensive Kinetic Model for Sulfur Reactions in Combustion, Gasification, and Chemical Processing. Sulfur chemistry in high temperature processes is poorly understood, leading to uncertainties in the design of these processes and in the control of their emissions. In particular, new approaches to lowering greenhouse emissions which depend on the combustion and gasification of coal, biomass, or refuse-derived fuel, such as integrated gasification combined cycle processes, are especially affected by these uncertainties. This project seeks to combine experimental measurements and quantum chemical modelling to produce a detailed mechanistic model for the reactions of sulfur in high-temperature systems. Such a model will provide designers with a tool to optimise these complex interacting systems.Read moreRead less
Establishing the pathways of biomass decomposition in hot compressed water. Australia has significant under-developed biomass and brown coal resources which could feasibly be used to produce transport fuels and industrial chemicals. The successful conversion of these resources will offset the rising cost of petrochemicals, reduce oil import dependency, and in the longer term, address some of the challenges of climate change. We will directly address this problem by investigating the mechanism of ....Establishing the pathways of biomass decomposition in hot compressed water. Australia has significant under-developed biomass and brown coal resources which could feasibly be used to produce transport fuels and industrial chemicals. The successful conversion of these resources will offset the rising cost of petrochemicals, reduce oil import dependency, and in the longer term, address some of the challenges of climate change. We will directly address this problem by investigating the mechanism of conversion of biomass and brown coal resources to targeted chemical products, at laboratory and pilot scale, as a precursor to the development of a commercial biorefinery.Read moreRead less
Scaleable Microstructured Chemical Process Systems. This project seeks to revolutionize the way bulk chemicals are made industrially. By combining highly integrated process designs, with profound process intensification, we will create the basis for chemical process technology that is efficient and economical at relatively small scale. This development will reinvigorate the Australian chemical industry, with enormous benefits to the country in terms of improved security of supply of chemicals an ....Scaleable Microstructured Chemical Process Systems. This project seeks to revolutionize the way bulk chemicals are made industrially. By combining highly integrated process designs, with profound process intensification, we will create the basis for chemical process technology that is efficient and economical at relatively small scale. This development will reinvigorate the Australian chemical industry, with enormous benefits to the country in terms of improved security of supply of chemicals and fuels and reduced trade deficit. This new type of plant will be scaleable and without the technical risk normally associated with plant scale-up. At the smallest scale, it will be mobile and able to utilise remote and dispersed feedstocks such as stranded natural gas, coal bed methane, or biogas. Read moreRead less