A Further Note on the Age Index of a Population by LaBlanc T. J., Pearl R.

By LaBlanc T. J., Pearl R.

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REFINING PROCESSES 2000 Deasphalted oil separator Deasphalted oil stripper Deasphalted oil 2 4 Stm. 1 Extraction tower Solvent drum Asphalt flash 3 drum Stm. Feed Stm. 5 Sour water Asphalt heater START Stm. Asphalt Deasphalting Application: Prepare quality feed and blending stock using the Low-Energy Deasphalting (LEDA) Process. Products: Bright stocks for lube oil refining, catalytic cracking and hydrocracking feed; specification asphalt. Description: Residue is extracted with liquid hydrocarbon solvent in a rotating disc contactor (1) where extraction efficiency is maintained at all charge rates by varying rotor speed.

Copyright © 2001 by Gulf Publishing Company. All rights reserved. REFINING PROCESSES 2000 3 4 5 Refrigerant Refrigerant 2 7 8 Hard wax 1 Solvent recovery Water 6 Waxy feed Steam Soft wax Dewaxed oil Steam or water Refrigerant Process steam Dewaxing Application: To remove waxy components from lubrication base oils streams to simultaneously meet desired low-temperature properties for dewaxed oils and produce hard wax as a salable byproduct. Description: Waxy feedstock (raffinate, distillate or deasphalted oil) is mixed with a binary solvent system and chilled down in a very closely back to main menu controlled manner in scraped surface exchangers (1) and refrigerated chillers (2) to form a wax/oil/solvent slurry.

The Shell middle distillate synthesis plant in Bintulu, Malaysia, uses SGP to convert 100 million scfd of natural gas into synthesis gas used for petrochemical applications. Reference: “Shell Gasification Process,” AIChE Spring National Meeting, paper 70b, March 5 –9, 2000. “Shell Pernis Netherlands Refinery Residue Gasification Project,” 1999 Gasification Technologies Conference, San Francisco, Oct. 17–20, 1999. V. Copyright © 2001 by Gulf Publishing Company. All rights reserved. REFINING PROCESSES 2000 To SRU SO2 & CO2 2 Regen.

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