Hot gas particulate removal from gasification streams
Gasification produces a hot, particulate-laden, flammable gas mixture which has the potential to be used in a variety of applications to produce energy. The ability to use multiple feedstocks such as biorenewable plant matter to fuel the gasification reaction is seen as advantageous. The particulate and other byproducts created from the gasification of biorenewable feedstocks cause issues in using the hot flammable gas in downstream applications. The ability to filter unwanted particulate from the hot flammable gas was investigated using a high temperature fabric filter. During testing and analysis, the formation of the dust cake on the fabric filter was studied, as well as the theoretical filtration efficiencies for a single fiber based on the operating conditions during steady state filtration. It was discovered that greater than 99% of the particulate was removed by the fabric filter. Unexpectedly there was no relationship discovered between the filtration time, pressure differential across the filter or the mass concentration of particulate and the filtration efficiencies. These anomalies are discussed and future changes for testing are recommended.