Combustion:

Combustion

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Biomass Combustion

    Biomass Combustion is an important renewable form of energy for power generation. Combined heat and power, CHP, is an efficient way of utilising this energy most effectively in units of 30 to 60 MW. This project will focus on fluidised bed biomass combustion and related problems. There are 3 particular topics in this area that we could support as PhD projects. The students would join a small team working in these areas:

    • Pilot scale experimentation at 200kW. Agglomeration problems associated with ash properties could be studies at pilot scale supported by off-line analysis including electron microscopy.
    • Deposition and corrosion studies related to fluidised bed combustion of biomass. An existing corrosion test facility in our newly refurbished labs is available for part of this work.
    • Heat transfer and phase equilibrium modelling of deposited material within the fluidised bed to predict problem areas associated with distributor design and operation with different fuels. CFD modelling.
  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Initiation and propagation of combustion waves with competitive reactions

    Ammonium Nitrate based emulsions are a basic component of many materials deliberately manufactured as explosives, and also of many other industrial chemicals, especially agricultural fertilizers, where the possibility of fire or explosion during the production, storage and transport processes is a major safety consideration. Issues still remain concerning the kinetics of the decomposition process, the interaction of fuel, and the effect of additives. This project aims to undertake a theoretical modelling study of these processes in order to improve the understanding of this area.

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Emissions and ash behaviour during the combustion of torrefied biomass

    Torrefaction is a new technique of upgrading the quality of biomass as a fuel for power generation. The purpose of this research is to investigate the influence of the torrefaction on the combustion, pollutant emission and ash deposition of biomass. A range of different types of biomass will be torrefied under specific conditions. Then both the raw and torrefied biomass will be fired and compared in terms of gas emissions and ash compositions. Quantified data will be collected and analysed during the combustion. The outcomes of this project will improve our understanding of the potential of future large scale utilisation of torrefied biomass in the power generation industry

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Advanced oxy-coal combustion modelling and optimisation

    Oxy-coal combustion with recycled flue gas is an emerging technology for efficient carbon capture and sequestration (CCS) that can substantially reduce carbon emission from coal-fired power plants. Switching from air-firing to oxy-firing substantially alters the heat transfer and the combustion characteristics in the furnace. This project aims to improve the current understanding of the oxyfuel combustion processes through performing detailed computational fluid dynamics modelling of the oxy-coal combustion and experimental investigations in order to gain an in-depth understanding of the impact of oxy-coal combustion on the furnace operation. New knowledge will be obtained to provide guidelines to the power generation industry on their future design of new and/or retrofitting existing power plant with oxy-coal combustion technology.

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Alternative Aviation Fuels Combustion Experiments

    As a consequence of concern over increasing greenhouse gas emissions, along with issues of availability and security of supply of conventional fossil fuels, there is a growing pressure to consider the use of alternative fuels in the aviation sector. However, before this can happen a thorough investigation of both the physical and chemical properties of proposed alternative fuels is required. This project aims to address the uncertainty over the combustion behaviour of alternative fuels by a combination of an experimental and theoretical study. Laminar flames of alternative aviation fuels will be probed by the techniques of laser induced fluorescence along with gas sampling to elucidate the flame structure, which will then be modelled using the one-dimensional flame structure code, PREMIX. This will allow the development and validation of chemical kinetic models of these alternative fuels combustion.