TITLE:
The Italian ZECOMIX Platform: CO2 Capture on Calcined Dolomite in Fluidized Bed Carbonator Unit
AUTHORS:
Silvera Scaccia, Stefano Stendardo, Giuseppina Vanga, Leandro Pagliari, Stefano Cassani, Mirko Nobili, Giuseppe Messina, Andrea Assettati, Giuliano Guidarelli, Salvatore Attanasi, Caterino Stringola, Andrea Grasso, Ivano Cassani, Antonio Calabró, Pier Ugo Foscolo
KEYWORDS:
ZECOMIX Experimental Platform, Dolomite, CO2 Capture, Fluidized Bed, GC and FTIR, Kinetics
JOURNAL NAME:
Natural Resources,
Vol.5 No.9,
July
31,
2014
ABSTRACT: The Italian Zecomix platform is a gasification pilot-scale plant
integrated CCS technology, whose flexibility allows operating each unit alone.
For quantitative analysis of the gaseous species an analytical system based on
commercially available instruments and sampling lines at various points of
plant was properly designed. A Fourier Transform Infrared Spectrometric (FTIR) with
portable low resolution and gas chromatographic tools were used. The fluidized
bed calciner/ carbonator unit was fed with naturally occurring dolomite (about 300 kg) from quarry of Biella (Italy)
and tested for CO2 capture. Carbonation reaction was conducted at
around 700°C under simulated reformed synthesis gas
containing 30% of CO2. Based on GC and FTIR results a CO2 retention better than 70% was achieved. The application of grain model
establishing the carbonation reaction was kinetically controlled within 50
seconds and the reaction rate constant was comparable to that obtained at
laboratory-scale level by thermogravimetric analyzer.