Bagasse Gasification In A 100 KWth
Steam-oxygen Blown Circulating Fluidized Bed
Gasifier With Catalytic And Non-catalytic
Upgrading Of The Syngas Using Ceramic Filters
Author(s)
M. Fantini, M. Nacken, S. Heidenreich, M. Siedlecki,
G. Fornasari, P. Benito, M. A. Haikal Leite & W. de Jong
Abstract
Gasification of pelletized sugar cane bagasse, the waste residue from sugar cane,
was carried out using an atmospheric pressure 100 kWth steam-oxygen blown
circulating fluidized bed gasifier (CFBG). The purification of the syngas
produced was carried out using a high temperature filter unit which contains 3
rigid ceramic candles with an outer diameter of 60 mm and a length of 1500 mm.
Keeping the gasification temperature in the range of 800°–860°C and using
magnesite M85 as the bed material, the effects of operational conditions (e.g.
steam to biomass ratio (SBR) and oxygen to biomass stoichiometric ratio (ER))
and of catalytic and non-catalytic filtration on the composition distribution of the
product gas and tar formation were investigated. Higher temperature and SBR
values were favorable for increasing the mole ratio H2 to CO and decreasing the
tar compound (PAH) concentration on dry basis, measured via solid phase
adsorption (SPA) sampling and subsequent GC analysis varying from
approximately 2 to 6 g/mn
3.
At the same operational conditions, in the downstream filter, the conversion
of tar content obtained using catalytic filter candles increased by a factor of 2.8
compared to the one with non-catalytic filter elements. The specification and
distribution of major ash forming elements were investigated by SEM-EDS.
Experimental results showed that bagasse is an interesting fuel for syngas
production via the gasification process, both from a gas composition and from a
tar production point of view.
Keywords: gasification, bagasse, tar, ceramic candles, high temperature.
Keywords
gasification, bagasse, tar, ceramic candles, high temperature.
Related Book
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