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Plenary Lecture

Prof. Alberto Gómez-Barea
University of Seville
Energy, Chemical and Environmental Engineering
Professor Gómez-Barea is Full Professor in Energy, Chemical and Environmental Engineering at University of Seville (US) since 2013. He has lectured Transport Phenomena, Chemical Reactors, and Modelling and Process Simulation at the US for the last 15 years. He has developed an intensive international activity as visiting lecturer and researcher all over the world giving lectures on solid fuel conversion and fluid dynamics of fluidized-beds, participating in doctoral thesis and project evaluation committees. His specific research activity has been focused on thermochemical conversion of biomass and waste in fluidized beds and synthesis of biofuels and bioproducts. More recently, he is involved in new developments for hybridization of biomass and waste with concentrated solar technologies and development of reactors for solar thermochemical conversion and storage. He has participated in more than 50 R&D public funded projects and private contracts with companies for the energy, chemical and industrial sector. He is author of more than 55 papers in SCI (JCR) journals, chapters in books and more than 70 communications in international Conferences (h-Index Scopus 23). He is part of the Steering Committee in various reputed International conferences such as those of Fluidized Bed Conversion, Fluidized Bed Technology, and Engineering for Waste and Biomass Valorization.

Fluidized Bed Technologies for Solar Fuel Applications

Due to its unique characteristics, fluidized bed (FB) has been widely applied to a number of processes, especially with an early success to chemical reactors and subsequently for boilers and other fuel convertors and CO2-capture devices, as well as reactors for material processing. Despite the existence of early research on solar developments based on FB technology from 1970’s, a new great interest has emerged during the last decade on the development of FB in the areas of thermal storage and solar thermochemical conversion from concentrated solar technologies (CST). This offers the option of converting solar energy into thermal, electrical, and chemical forms. FB technologies based on direct and indirect irradiated reactors can be used to efficiently supply solar heat to high-temperature endothermic processes like fuel productions (hydrogen/syngas) by reforming and gasification of carbonaceous feeds like coal, methane and biomass, resulting in net solar energy embodied in the product gas.

This presentation reviews the potentiality of FB as key device for the development of technologies in the area of solar thermochemical conversion and storage. The latest efforts like energy storage based on gas-solid reversible reactions, biomass-solar hybrid integration and solid particle receiver for CST systems, FB solar gasifiers and other developments in the field are discussed. The main issues to deal with are outlined, and the challenges and opportunities to develop FB devices in this area are reviewed.

Prof. Yue, Guangxi
Thermal Engineering, Tsinghua University
Deputy Director of the State Engineering Research Center on Clean Coal Combustion, Tsinghua University
Prof. Guangxi Yue received both bachelor and advanced degree in thermal engineering at Tsinghua University in 1970 and 1981. His expertise is in areas of thermal engineering. He is well-known in the field of clean coal technology and specifically on fluidized bed combustion and coal gasification for his researches and practices. In addition to numerous research projects, from 1990s to the present, he has been leading 9 major national research projects on fluidized bed coal combustion and coal gasification and over 10 of academic-industrial collaborated research projects across countries including Japan, France, Sweden and United States. He was the chairman of the 20th International Conference of Fluidized Bed Combustion in May 2009 Xian China. In 2009, he was elected as the Academician of the Chinese Academic of Engineering. In recent years he has been leading the R&D of world largest 600MW supercritical CFB demonstration in China. The demonstration was already in commercial operation successfully in 2014.

The Update and the Future of CFB Combustion in China

Coal is so far still the major energy resources in China. The main concern for coal combustion is fuel flexibility and the emission control. Since the circulating fluidized bed coal combustion was suggested in 1970’, it has been proved the best solution for waste coal utilization besides the cost effective emission control. In the past 30 years, Chinese researchers developed the CFB combustion theory and suggested the fluidization status specification theory to guide the R&D of CFB coal combustion technology.
Based on the fluidization status specification theory, Chinese Engineer developed series capacity of advanced CFB boilers in China that covered industrial steam generator and utility boiler. The update one is the success of the demonstration of 600MW supercritical CFB.
Besides of that, Chinese engineer also developed so called energy saving CFB process and comprehensive emission control CFB process that their performance is far better than traditional CFB boiler.

Dr. Yi, Sang Ho
POSCO, Pohang Works
FINEX R&D Department
Dr. Yi joined the steel industry in 1985 as a research engineer at POSCO, in South Korea. He was involved in kinds of projects concerning Blast Furnace, FINEX and EAF iron-making processes at Pohang and Gwangyang Research Labs. of the company. After years of research experiences, he later headed Blast Furnace and FINEX iron-making Research initiatives at the company. Yi was transferred to Pohang Steel Works as a technical manager responsible for the FINEX project when the project became a commercialized state in 2007 and was appointed a research director of the R&D center, POSCO in 2011. From 2015, he has been the head of the FINEX Project and Technology Marketing as an Executive Vice President of POSCO. Yi received his PhD in materials science and engineering from POSTECH, KOREA. He gave lectures on iron-making technology at GIFT (Graduate Institute of Ferrous Technology in POSTECH) from 2003 to 2005.

FINEX® with multi-stage fluidized bed for iron ore reduction, Lab to Commercial

The FINEX® process has been developed since 1992, starting from lab scale tests to constructing a pilot, a demo and two industrial plants consecutively to substitute the conventional BF iron-making process. 2MTPY FINEX® with multi-stage fluidized beds to reduce iron ore fines is one of the largest alternative iron-making plants, which has been operating at Pohang Works, POSCO from 2014. FINEX® is environmentally less influential than the BF route because of its low emission of SOx, NOx and dust and it is suitable to apply CCU due to its characteristic of using pure oxygen. It is also more flexible to use raw materials, since multi-stage fluidized bed reactors enable the iron ore with large range of particle sizes to be charged into the process directly. Multi-stage beds are also effective to remove harmful materials such as H2S and to generate uniform reduction degree by increasing the mixing efficiency. Continuous developments will verify that FINEX® is one of the most promising processes to substitute the BF route.

Keynote Speech

Dr. Dowon SHUN
Korea Institute of Energy Research
Low Carbon Process Laboratory, Climate Change Technology Research Division
Dowon SHUN holds a MS in Chemical Engineering and Ph. D. in Fuels engineering. From 1991 to present he has been working as a research engineer in the Korea Institute of Energy Research. He has been studying waste to energy technology and developing commercial scale circulating fluidized bed boiler for waste and biomass fuel.

Coal Power Trends in Asian market and CFBC prospect

Coal power plant covers major electricity production market de and is over 40% of net generation. Due to rapid development of Asian countries and following demand of electricity, the construction of coal power plant is ever increasing. Climate control and CO2 issue became a small issue for construction of coal power plant in this area. However the unstable market supply on hard coal for PC plant and vast potential on low rank coal, and fuel flexibility capability of new plant are a few driving motives that moves attention to CFBC power plant.

CFBC market in Asia has two branches. One is utility power plant over 500MWe equipped with super critical water circuit. The other is biomass/waste burning CFBC for a measure of environmental issue and to comply with dispersed generation demand. These are generally 10~30MWe capacity considering fuel supply network.

This presentation summarizes the survey of rapidly transforming the scale of coal power market in Asia and its trend.

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