DECARBONIZATION OFTRANSPORTATIONFUELS FEEDSTOCKS WITHPETROLEUM FRACTIONS VIA CO-HYDROPROCESSINGBIO-BASED
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1 DECARBONIZATION OFTRANSPORTATIONFUELS VIA CO-HYDROPROCESSINGBIO-BASED FEEDSTOCKS WITHPETROLEUM FRACTIONS Dr. Stella Bezergianni Principal Researcher in CPERI/CERTH 2 nd World Congress on Petrochemistry and Chemical Engineering October 27-29, 2014 Las Vegas, USA
2 CERTH Introduction Largest researcher center in Northern Greece Mission High quality scientific research / Emphasis on R&D&I Cooperation with Universities & Research Institutes Strong collaboration with industry CPERI R&D activities Fuels, biofuels production processes Materials (filter, membranes, ceramics, catalysts, etc) Renewable energy systems Modeling & optimization 2
3 CERTH in figures CERTH Personnel Direct public funding in M EU & GSRT R&D funding in M Industrial/service contracts in M Other sources of income in M Total annual funds in M Active projects per year Publications in conference proceedings Journal publications Citations ,612 2,681 2,969 3,189 3,662 4,100 5,500 Patents
4 Infrastructure 4
5 Biomass Conversion to Biofuels Renewable? Low H/C ratio? Contains water Corrosion problems? High oxygen content (aldehydes, acids, cetones) Reduced heating value Reduced oxidation stability Increased acidity Engine performance problems Biomass requires H/C increase, oxygen andη 2 Ο removal 5
6 Hydrotreating & Biomass Upgrading Common refining conversion technology H/C ratio increase Heteroatom (S, N, O) and metals removal High conversion Feedstock variability No by-products Most effective technology for biomass upgrading Liquid biomass Solid biomass Catalytic Pyrolysis Pyrolysis biooil Catalytic Hydrotreating Gasoline Diesel Gasification Fischer-Tropsch synthesis Wax 6
7 Bio-oil Upgrading Development of reactor loading procedure Catalytic system (catalyst, reactor filling material) & reactor zones Exploration of temperature profile effect on upgraded product quality Significant improvement of fuel quality Improvement* (%) Density 25 H/C 30 O content 96 H 2 O content 99 TAN >99 * Improvement of 2 nd stage product Pyrolysis bio-oil 1 st stage 2 nd stage Hydrotreated bio-oil 7
8 Fischer-Tropsch Wax Upgrading Development of operating protocol for wax hydrocracking Catalyst & T affect products yields & selectivities % 80.00% Naphtha Kerozine Diesel 60.00% Product yield 40.00% Catalyst A Catalyst B Biomass FT-wax FT-diesel 20.00% 0.00% Base-10 o C Base Base+10 o C Base+16.5 o C Base+25 o C Base+32.5 o C Temperature Source: Renew EU project ( Laboratory of Environmental Fuels and Hydrocarbons Centre for Research and Technology Hellas (CERTH) 8
9 Waste Lipids Upgrading + Η 2 catalyst Potential to cover 9,5% of Greek diesel demand Better combustion (increased cetane) More economic (high HHV) More stable (no TAN, high IP) Sustainable? Large-scale units require large investments 9
10 Light hydrocarbons C1-C4 Naphtha Hydrotreating Catalytic reforming Isomerization Polymerization Isomerization product Reformate Gasoline polymerization Fuel gas Liquid gas Atm. Distillation Heavy Gasoil Hydrotreating Hydrotreating Alkylation Catalytic pyrolysis Alkylate Alkylation gasoiline Straight-run kerozene Straight-run diesel Catalytic pyrolysis gasoline Catalytic pyrolysis diesel Final pr rocessing and blending Aviation Fuels Diesel Unleaded Gasoline Light Vacuum Gasoil Hydrocracking gasoline Heating Hydrocracking Hydrocracking mid-distillate oil Heavy Vacuum Gasoil Vacuum Distillation Thermal processing Fuel gas and gasoline Heavy fractions upgrading Lubricants process Lubricants Thermal process Coke Asphalt 10
11 Co-Processing Biomass Technical & Environmental Targets Crude oil Biomass Emissions Emissions Refinery Energy Other products FAME ethanol Fuels Hybrid fuels A. Technical feasibility Utilize existing infrastructure Maintain similar operation Maintain same product quality B.Environmental performance Mitigate energy consumption Reduction of emissions (WTT) 11
12 A Co-Processing Case Study SustainDiesel Project Aim: Improvement of diesel sustainability by incorporating WCO and RES in existing refinery Project duration: Partners: Coordinator: Centre for Research & Technology Hellas (CERTH) Academic partners:aristotle University of Thessaloniki & National Technical University of Athens Industrial partners: Hellenic Petroleum & Sunlight S.A. Financing: Program Competitiveness (ESPA) with funds from EU and Greek Government 12
13 Technical Feasibility Assessment ❶Evaluation of hydrotreating catalyst ❷Determine optimal operating conditions T, P, Η 2 /oil, LHSV ❸Determine max WCO mixing ratio ❹Evaluate emissions & engine performance 13
14 Nitrogen variation (%) NiMocatalyst showed a performance increase for the feedstock with the largest WCO content NiMocatalyst exhibited increased HDN performance with increasing WCO content NiMo CoMo Sulfur variation (%) 100/0 95/5 90/10 85/15 80/20 75/25 70/30 Feed GasOil/WCO Catalyst Evaluation Heteroatom Removal NiMo CoMo /0 95/5 90/10 85/15 80/20 75/25 70/3 0 Feed GasOil/WCO WCO addition does not decrease product quality when NiMo catalyst is used 14
15 Catalyst Evaluation Deactivation Rate Catalyst deactivation rate is extremely important for catalyst selection Deactivation rate 1.1 determined based on 1 desulfurization efficiency at different DOS 1.5 Normalized desulfurization (1 for 100/0) Days On Stream (DOS) NiModeactivation rate is 3 times smaller than CoMo 15
16 Effect of Biomass Content Heteroatom Removal & Diesel Yields Diesel yield favored with increasing WCO WCO contained triglycerides can be more easily converted into diesel range hydrocarbons Desulfurization shows an optimum rate at ~10% WCO Desulfurization efficiency decreases for high WCO ratios Normalized sulfur (1 for 100/0) 100/0 95/5 90/10 85/15 80/20 75/25 70/30 Feed GasOil/WCO 1.05 Normalized diesel yield (1 for 100/0) /0 95/5 90/10 85/15 80/20 75/25 70/30 Feed GasOil/WCO WCO favors diesel yields but at higher ratios limits HDS 16
17 Hydrogen consumption affects process economics 2.5 Hydrogen consumption 2 increases due to 1.5 underlying HDO 1 kinetics Smaller WCO rates (<90%) are preferred for economic feasibility of WCO integration Effect of Biomass Content Hydrogen Consumption Normalized H 2 consumption (1 for 100/0) 0 100/0 95/5 90/10 85/15 80/20 75/25 70/30 Feed GasOil/WCO WCO increases H 2 consumption 17
18 Environmental Performance Assessment Diesel emissions Total refinery emissions Current Diesel Production Proposed WCO incorporation* kg CO 2 eq-/kg kg CO 2 eq-/kg 2,119 Mt CO 2 eq-/yr 1,679 Mt CO 2 eq-/yr Fuel combustions, 18.6% * Calculations are based on substituting 30% of fossil fraction (HAGO) with WCO Electricity, 5.9% Natural gas production and transportation, 1.5% Biodiesel production and transportation, 2.0% Crude oil extraction and transportation, 69.2% Expected reduction of GHG emissions by 20.75% 18
19 Conclusions Catalytic hydrotreatment is an effective process for biomass upgrading Bio-based intermediates & lipids upgrading Compatibility with fossil fuels, attractive properties Co-hydroprocessing can allow immediate and sustainable biomass integration with energy markets No requirement of investments on new infrastructure No significant technology limitations Improvement of fuel sustainability (lower carbon foot-print) 19
20 Acknowledgements A. Dimitriadis G. Meletidis Dr. L. Crhysikou Chemical Processes & Energy Recourses Institute (CPERI) Centre for Research & Technology Hellas (CERTH) Thessaloniki, Greece S.J. Kiartzis M.C. Magiliotou A.N. Skandilas V.S. Dimitropoulos Hellenic Petroleum S.A. Thessaloniki, Greece
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