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____________________________ MODERN LUBE REFINING TECHNOLOGY ________________________________________ MLRT Le Ngoc Quang, PhD HANOI UNIVERSITY OF TECHNOLOGY MLRT-LNQ Hanoi University of Technology 1 Trends in Lube Refining Lube Crude Supply  Processing  MLRT-LNQ Hanoi University of Technology 2 Lube Crude Supply Trends Premium Crudes Declining  Increasing Effort to Obtain and Approve Replacements  MLRT-LNQ Hanoi University of Technology 3 Future Lube Processing Objectives Improve Yields of Lube on Crude  Make Acceptable Lubes from Lower Quality Crudes  Replacing Solvent Refining Steps With Catalytic  Processes Can Help Meet These Objectives.  MLRT-LNQ Hanoi University of Technology 4 Major Processing Trends (cont’d) Mobil Lube Dewaxing (MLDW) - Catalytic Dewaxing to Replace Solvent Dewaxing  Wax Hydroisomerization (MWI) - Extra-High VI Base Stocks - Production of Group III Stocks  Severe Lube Hydrotreating – LHDT - Replacing Furfural Solvent Extraction - Group II Stocks Production  Lube Hydrocracking  Group II-III Stocks Manufacture  MLRT-LNQ Hanoi University of Technology 5 M L D W Mobil Lube DeWaxing Catalytic Replacement for Solvent Dewaxing MLRT-LNQ Hanoi University of Technology 6 Lube Oil Base Stock Manufacture: MLDW Catalytic Dewaxing Process VACUUM WAXY RAFFINATES NEUTRAL DISTILLATES DISTILATTION FURFURAL SOLVENT EXTRACTION 1 2 ATMOS. RESID 1 DEWAXED OILS MEK SOLVENT DEWAXING 2 FURFURAL 3 EXTRACT 3 WAX 1 LUBE BASE STOCKS CLAY OR HYDROGEN FINISHING 1 2 2 3 3 4 4 (FOOT OIL) 4 Propane De asphalt 4 DE-ASPHALTED OIL Light Hydrocarbon CATALYTIC DEWAXING ASPHALTS VACUMM RESID. MLRT-LNQ * Tanks Represent Different Viscosity Grades Hanoi University of Technology 7 MLDW Flow Diagram MLRT-LNQ Hanoi University of Technology 8 MLDW Operating Conditions H2 Partial Pressure: 400 psig H2 Circulation: H2 Consumption: Space Velocity: HDW HDT Operating Temperature: HDW HDT 2500 SCF/B 100 – 250 SCF/B MLRT-LNQ 0.3 – 1.0 LHSV 1.0 LHSV 520 – 675oF 450 – 525oF Hanoi University of Technology 9 MLDW Catalyst: ZSM-5 Zeolite Note: Zeolite Synthesized by Mobil (ZSM) 10-Member Ring Structure Medium Pore Zeolite Pore Dimension 5.3 x 5.6 A0 Straight Channel 5.1 x 5.5 A0 Sinusoidal Channel MLRT-LNQ MLDW Catalyst: - 65% ZSM-5 on Al2O3 - 1- 4 wt% Ni Hanoi University of Technology 10