1 / 8

Lube Refining Essence of Solvent Extraction

Lube Refining Essence of Solvent Extraction. PROCESS FLOW PLAN - LUBE REFINERY. SPO D. H2. P D U. S E U. HY. R E A C T O R. SPO. V D U. SPO R. 150N D. 150N R. 150NT. 500N D. 500N R. 500NT. RCO. 1300N D. 1300N. 1300N R. DAO D. SBS. DAO R. IO100.

tino
Télécharger la présentation

Lube Refining Essence of Solvent Extraction

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. Lube Refining Essence of Solvent Extraction

  2. PROCESS FLOW PLAN - LUBE REFINERY SPO D H2 P D U S E U HY. R E A C T O R SPO V D U SPO R 150N D 150N R 150N\T 500N D 500N R 500N\T RCO 1300N D 1300N 1300N R DAO D SBS DAO R IO100 IO100 D P D A IO-100 HD IOH IO-1600 IO1600 D H2-PLANT IO-1600 HD LPG\NAPHTHA FLO RPO CBFS S W H2 TO-FR ASPHALT.

  3. Process Objectives

  4. Solvent Extraction Raffinate Solution Raffinate Recovery NMP Treater Tower Solvent & Stripping Gas Recovery Feed Extract Recovery Extract Solution

  5. Extraction concepts • Using solvent, you extract either desirable or undesirable compounds from a liquid mixture. • Counter-current liquid/liquid contacting in Treater Tower • Two phase system - heavy & light phase • Improves viscosity index, color of lube oil • Removes aromatic compounds • Reduce viscosity

  6. Properties of NMP • Full name : N-methyl-2-pyrrolidone • Density, 25 C : 1.027 • Boiling Point, C : 204 • Freezing Point, C: -24.1 • Viscosity, cP @140 C: 1.02 H2C CH2 H2C C=O NCH3

  7. Extract Recovery • Extract solution (treater tower bottom - aromatic distillate) preheated to 225 C before entering the Extract Recovery Furnace • Extract Recovery Tower: • 27 trays; top temperature : 260 - 265 C, Bot temperature : 250 - 275 C (top & bot depend on type of grade) • Stripping medium : LPG at 210 C • Extract oil stripped down to 5 ppm of NMP • Overhead product : stripping gas, water vapor, light HC and NMP Vap • Overhead product is combined with raffinate recovery tower overhead. • They go to dry solvent drum through series of exchanger which generate intermediate steam and increase Extract Recovery Furnace • Bottom product is stripped off of light HC and cooled to 80 C and then goes to tankage.

  8. Raffinate Recovery • Raffinate solution (treater tower overhead - paraffinic distillate) preheated to 210 C before entering the Raffinate Recovery Furnace. Raffinate Recovery : • 27 trays; top temperature : 225-235 C, Bot temperature : 290 - 310 C (top & bot depend on type of grade) • Stripping medium : LPG at 210 C • Raffinate oil stripped down to 5 ppm of NMP • Overhead product : stripping gas ,water vapor ,light HC and NMP Vap • Overhead product is combined with extract recovery tower overhead. • They go to dry solvent drum through series of exchanger which generate intermediate steam and increase Extract Recovery Furnace • Bottom product goes to Hydrofiner reactor

More Related