1 / 9

Ferenc Lónyi

Studies of the Catalytic Conversions of Bio-Oils Obtained by Pyrolytic Decomposition of Non-Edible Biomaterials. Ferenc Lónyi. Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences. Biomass conversion. Product. Biomass.

trynt
Download Presentation

Ferenc Lónyi

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Studies of the Catalytic Conversions of Bio-Oils Obtained by Pyrolytic Decomposition of Non-Edible Biomaterials Ferenc Lónyi Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences

  2. Biomass conversion Product Biomass Conversion - Diversity - Seasonal and disseminated occurrence • Near to the location • of biomass generation • Using the best conversion • technology (economy and product requirement) • - Locally used energy (heat or electric) • Transportable energy • Intermediates and chemicals Liquid fuel - biodiesel - ”green” diesel - FT fuel - lower alcohols Produces - vegetable oil - algae oil - energy plants Biological - aerobic and anaerobic fermentation - enzymatic hydrolysis Chemical (catalytic) -transesterification of oils - hydrorefining of oils - processing the products of other conversions, e.g. gasification of pyrolysis oil to H2/CO mixture Pipeline gas - bio-methane • Wastes • - lignocellulosic • - communal • - industrial • animal • by-products • Thermal • - combustion • - gasification • Pyrolysis • (CO2 negative) Electric energy - fuel cell - Gas turbine/generator - Gas engine/generator

  3. Pyrolysis Char (~35 wt%) Pyrolysis gas (~65 wt%) Biomass (e.g. Meat and Bone Meal) ~85 %-a condensable Pyrolysis (~450 – 500 0C) Pyrolysis oil • Not suitable as fuel: • relatively low energy density • - chemical instability • corrosivity • immiscible with conventional fuels • environmentally hazardous • emission (e.g. NOx) Reforming is needed!

  4. Composition of pyrolysis oils Pyrolysis oil of plant origin (e.g. from agricultural and forestry residues) Pyrolysis oil of animal origin* (e.g. from meat and bone meal (MBM)) C, wt%: 60 H, wt% 7 O, wt% 32 N, wt% 1 ----------------------------------------- Density (kg/dm3): 1.12 Heating value (MJ/kg) 21.3 (Zhang et al., Bioresource Technology 96 (2005) 545 C, wt%: 74 H, wt% 12 O, wt% 5 N, wt% 9 ----------------------------------------- Density (kg/dm3): 0.97 Heating value (MJ/kg) 36.5 • Reforming: • - Catalytic steam reforming to H2/COmixture • Catalytic cracking and decarboxylation • Catalytic esterification • Reforming: • - Catalytic steam reforming to H2/COmixture • Hydrotreating (heteroatom removal) * • ~20 million tons of animal by-products in the EU 27 countries • environmentally dangerous waste (microbiological re- and trans-contamination) • incineration is not favored (fly ash, emission of furans, dioxins and NOx) → pyrolysis

  5. Catalytic steam reforming of pyrolysis oils CxHyNvOz + xH2O → xCO + (y/2+x-z)H2 + (v/2)N2 [1] CO + H2O CO2 + H2 [2] [1] highly endotherm [2] slightly exotherm Products: H2,CO,CO2,N2, (CH4)

  6. Catalytic steam reforming of pyrolysis oil obtained from MBM

  7. Catalytic hydrotreating of pyrolysis oils CxHyNvOz + nH2 → CxH2x+2 + zH2O + vNH3 (heteroatom removal via HDO and HDN) Unattractive process for pyrolysis oils of plant origin: - high H2 demand due to the high oxygen content (>30 wt%) - useless H2O is formed as by-product Feasible process for pyrolysis oils of animal origin: - relatively low H2 demand - valuable NH3 is formed as by-product Pyrolysis oil from MBM Hydrocarbon fuel + H2 + NH3(+H2O) catalyst N-compounds: aliphatic nitriles, amines and amides

  8. Catalytic hydrodenitrogenation (HDN) of propyl-amine model compound (preliminary experiment) Ni2P/silicagel, WHSV= 1 h-1, p= 30 bar Conversion Ammonia Conversion, Yield, mol% Propane Ammonia Selectivity, mol% Propane Temperature, oC

  9. Thank you for your kind attention !

More Related