Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand (2020)
Type of ContentJournal Article
PublisherSpringer Science and Business Media LLC
Bed materials and their catalytic activity are two main parameters that affect the performance of the dual fluidized bed (DFB) gasification system in terms of product gas composition and tar levels. Two sources of bed materials were used for the operation of a commercial DFB gasification system in Thailand, using woodchips as a biomass feedstock. One source of the bed material was the calcined olivine which had been used in the Güssing Plant, Austria, and the other activated bed material was a mixture of fresh Chinese olivine and used Austrian olivine with additives of biomass ash, calcium hydroxide and dolomite. These bed materials were collected and analyzed for morphological and chemical composition using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray fluorescence spectroscopy (XRF). The product gas was cleaned in a scrubber to remove tars, from which the samples were collected for gravimetric tar analysis. Its composition data was automatically recorded at the operation site before it entered the gas engine. From the SEM, EDS and XRF analyses, calcium-rich layers around the bed materials were observed on the activated bed material. The inner layers of bed materials collected were homogeneous. Biomass ash, which was generally added to the bed materials, had significant calcium and potassium content. These calcium-rich layers of the bed materials, from the calcium hydroxide, biomass ash and dolomite, influenced system performance, which was determined by observing lower tar concentration and higher hydrogen concentration in the product gas.
CitationSiriwongrungson V, Hongrapipat J, Kuba M, Rauch R, Pang S, Thaveesri J, Messner M, Hofbauer H Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand. Biomass Conversion and Biorefinery.
This citation is automatically generated and may be unreliable. Use as a guide only.
Keywordsdual fluidized bed; olivine; catalyst activity; calcium layer; gasification
ANZSRC Fields of Research40 - Engineering::4004 - Chemical engineering::400402 - Chemical and thermal processes in energy and combustion
RightsAll rights reserved unless otherwise stated
Showing items related by title, author, creator and subject.
Nox emission performance assessment on a perforated plate-implemented premixed ammonia-oxygen micro-combustion system Zhao D; Cai T; Becker S; Wang B; tang A; Fu J; Han L; Sun Y; Cao F (2020)The present work examines the NOx emission characteristics of a premixed micro-combustion system with a perforated plate implemented. For this, a three-dimensional (3D) computational model involving a detailed chemical-kinetic ...
NOx emission and thermal performances studies on premixed ammonia-oxygen combustion in a CO2-free micro-planar combustor Zhao D; Cai T; Wang B; Li J; Guan, Y (2020)Unlike hydrocarbon fuel, ammonia is a carbon-free and renewable energy source. It is also regarded as one of the potential energy carriers. However, ammonia combustion for power generation is not well studied under ...
Abdul Patah, M.F.; Pang, S. (University of Canterbury. Chemical and Process Engineering, 2015)Densification of biomass into pyrolysis oil for gasification is gaining increasing interest. The major advantages of this approach include costs reduction for transportation and storage, easier feedstock handling as well ...