Development of Circulating Molten Metal Thermochemical Conversion System
Guidelines of Extended Abstract Preparation for APCChE 2012
Development of circulating molten metal
thermochemical conversion system Jihong Moona,b Suji Jeona,b Jungho Hwangb
Won Yanga,cUendo Leea,c* a Thermochemical Energy System R&BD Group, Korea Institute
of Industrial Technology (KITECH), Korea(S) b Yonsei University, Korea(S) c Department of Green Process and System Engineering,
University of Science and Technology (UST), Korea(S) (*Corresponding Author¡¯s
E-mail: uendol@kitech.re.kr)
was used as a working fluid of a circulating fluidized bed reator to enhance
biomass thermo-chemical conversion. As a liquid bed material, molten metal has
various advantages such as high thermal conductivity, low viscosity and
potential to gas cleaning. Due to its fast heat transfer rate, molten metal can
significantly increase the reaction rate and yield of any thermochemical
processes: pyrolysis, gasification and combustion. In addition, in-situ gas
cleaning (dust, tar, and acid gas) is also possible by phsico-chemical process:
molten metal shower or bubbling of product gas in a molten metal bed. On the
other hand, oxidation is a potential shortcoming of molten metal system, which
leads to loss of the bed material or causes problems related to a metalic
oxide. Another issue is to separation of molten metal from byproducts such as
char, ash or any impurities. Adoption of a circulating fluidized bed system is
a good remedy for solving the problems. By circulating molten metal,
regeneration processes (reduction of metal oxide, solid seperation filter, or
chemical regeneration) can be added to the molten metal thermochemical
conversion system. In this study, a circulating molten metal reactor was
developed and tested for thermochemical conversion of biomass. Some preliminary
results about pyrolysis and gasification will be presented as well as the
seperation of solid impurities and in-situ product gas cleaning.
thermochemical conversion system Jihong Moona,b Suji Jeona,b Jungho Hwangb
Won Yanga,cUendo Leea,c* a Thermochemical Energy System R&BD Group, Korea Institute
of Industrial Technology (KITECH), Korea(S) b Yonsei University, Korea(S) c Department of Green Process and System Engineering,
University of Science and Technology (UST), Korea(S) (*Corresponding Author¡¯s
E-mail: uendol@kitech.re.kr)
Keywords: Biomass; Molten metal; Pyrolysis;
Gasification; Gas cleaning
was used as a working fluid of a circulating fluidized bed reator to enhance
biomass thermo-chemical conversion. As a liquid bed material, molten metal has
various advantages such as high thermal conductivity, low viscosity and
potential to gas cleaning. Due to its fast heat transfer rate, molten metal can
significantly increase the reaction rate and yield of any thermochemical
processes: pyrolysis, gasification and combustion. In addition, in-situ gas
cleaning (dust, tar, and acid gas) is also possible by phsico-chemical process:
molten metal shower or bubbling of product gas in a molten metal bed. On the
other hand, oxidation is a potential shortcoming of molten metal system, which
leads to loss of the bed material or causes problems related to a metalic
oxide. Another issue is to separation of molten metal from byproducts such as
char, ash or any impurities. Adoption of a circulating fluidized bed system is
a good remedy for solving the problems. By circulating molten metal,
regeneration processes (reduction of metal oxide, solid seperation filter, or
chemical regeneration) can be added to the molten metal thermochemical
conversion system. In this study, a circulating molten metal reactor was
developed and tested for thermochemical conversion of biomass. Some preliminary
results about pyrolysis and gasification will be presented as well as the
seperation of solid impurities and in-situ product gas cleaning.