INVESTIGADORES
SEDRAN Ulises Anselmo
congresos y reuniones científicas
Título:
Co-processing of bio-oils in FCC. Prediction of product distributions and coke yields
Autor/es:
M. BERTERO; G. DE LA PUENTE; U. SEDRAN
Lugar:
Cancun
Reunión:
Simposio; 3. XXI International Materials Research Congress, New Catalytic Materials Symposium; 2011
Institución organizadora:
Sociedad Mexicana de Materiales A.C.
Resumen:
CO-PROCESSING OF BIO-OILS IN FCC. PREDICTION OF PRODUCT DISTRIBUTIONS
AND COKE YIELDS.
M.
Bertero, G. de la Puente, U. Sedran
Instituto de Investigaciones en
Catálisis y Petroquímica INCAPE (FIQ, UNL CONICET), Santiago del Estero 2654,
(3000) Santa Fe, Argentina.
E-mail:
usedran@fiq.unl.edu.ar
The co-processing of bio-oils from the pyrolysis of residual
lignocellulosic biomass together with conventional feedstocks in the catalytic
cracking of hydrocarbons (FCC) is an attractive option to convert biomass into
fuels or petrochemical raw materials. By using present structure,
no important process development and investments would be needed. However, the high concentration of oxygen in
bio-oil and its high coke forming trend could hamper this possibility. Then,
it is necessary to know the contribution to products and coke from the various
species in bio-oil. The coke potential can be reduced to some extent with a
thermal treatment. The conversion and product distribution from a laboratory
bio-oil composed by eight different model compounds representing most important
oxygenated functions in thermally treated bio-oils were studied. An equilibrium
FCC catalyst was used and results were compared to thermal cracking reactions
and the background from the behavior of individual model compounds under the
same conditions. The mixture was made up of acetic acid, methyl acetate,
furfural, 2-hidroxy-3-methylcyclopentenone, methanol, phenol, syringol, 1,2,4-trimethoxybenzene and water, with concentrations typical
in bio-oils. A fixed bed reactor was used at 500 ºC and W/F0 0.16 h
during 60 s.
The catalytic
conversion and deoxygenation were very high (about 90 %) and much higher than
those in the thermal experiments. In both cases the main products were
hydrocarbons (aromatics and C2-C4 olefins with the catalyst; methane and C2-C4
olefins in the thermal experiments), water and oxygenated compounds. The yield
of catalytic coke was very high (13.7 %wt.) and much higher
than the yield of thermal coke (0.2 %wt.). This information is consistent with
previous observations with individual reactants and may be useful in predicting
the contributions from these types of compounds, significantly present in
bio-oils, if they are to be co-processed in existing FCC units, or upgraded
over acidic catalysts.