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PRODUCTION OF VALUE ADDED PRODUCTS FROM LIGHT NAPHTHA / NGL STREAM

PRODUCTION OF VALUE ADDED PRODUCTS FROM LIGHT NAPHTHA / NGL STREAM. Indian Institute of Petroleum (Council of Scientific & Industrial Research) Dehradun SYMPOSIUM ON SOLVENT EXTRATION REVISITED. FEBRUARY 5 TH & 6 TH , 2010 IIChE (NRC) Auditorium NEW DELHI-INDIA.

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PRODUCTION OF VALUE ADDED PRODUCTS FROM LIGHT NAPHTHA / NGL STREAM

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  1. PRODUCTION OF VALUE ADDED PRODUCTS FROM LIGHT NAPHTHA / NGL STREAM Indian Institute of Petroleum (Council of Scientific & Industrial Research) Dehradun SYMPOSIUM ON SOLVENT EXTRATION REVISITED FEBRUARY 5TH & 6TH, 2010 IIChE (NRC) Auditorium NEW DELHI-INDIA

  2. Major Components in Typical Light Naphtha / NGL

  3. Presentation Overview

  4. Naphtha Dearomatization Commercial Methods Extractive Distillation Oleum Treatment Hydrogenation Adsorption Solvent Extraction

  5. Food Grade Hexane (FGH)

  6. FGH Specifications (BIS:3470:2002) Characteristics Requirements Density at 20oC 0.660-0.687 Refractive Index,20oC 1.375-1.384 Distillation IBP,oC Min 63 Distilled between 64-70oC, percent volume, Min 95 Non volatile residue, gm/100ml, Max 0.0005 Sulphur content, mg/kg, Max 5 Lead, as Pb, mg/kg,Max 1 Benzene content, percent v/v, Max 0.05 Polycyclic aromatic hydrocarbons To pass the test

  7. Special Boiling Point (SBP) Solvents

  8. Naphtha Dearomatization Commercial Methods contd…. Oleum Treatment Extractive Distillation Hydrogenation Adsorption Solvent Extraction

  9. Naphtha Dearomatization Commercial Methods contd…

  10. Dearomatization of SRN/NGL Light Naphtha/ NGL 63-69 °C fraction Extraction Fractionation Extraction SBP (55/115°C) FGH FGH

  11. DAN / FGH EXTRACT EXTN COL R W C SRC SOL REG FEED LEAN SOLVENT Process Flow Sheet for FGH

  12. 55 C (-) CUT TO STORAGE S P L I T E R - III SPLITER - II SPLITER - I FOOD GRADE HEXANE 55/115 C (-) CUT TO STORAGE 115 C (-) CUT TO STORAGE Splitter Section for Straight Run Dearomatized Naphtha

  13. Experimental Data Generation LLE data Batch units ( Mixture Settler) Mass transfer data Extraction studies Packed extractor (34 mm dia.X1.5 m ht.) Solvent Recovery (Distillation) studies 1” dia Oldershaw columns Up to 50 actual stages

  14. Naphtha Dearomatization using Sulpholane as Solvent

  15. Naphtha Dearomatization using Sulpholane as Solvent contd.. Contribution of sulfur in product may increase due to presence of traces of sulfolane

  16. Improved Process For Dearomatization Of Naphtha Using NMP

  17. Why NMP + Water Mixture Is Antisolvent/ co-solvent essential ?

  18. Capacity And Selectivity Of Solvents For NMP Water Blend NMP + Water Water NMP

  19. Salient Features of NMP Technology

  20. Experimental Data Generated Parameters Solvent/anti solvent/ Co solvent Feed : Model HC/ Actual feedstock S/F ratio Temperature Data Points LLE : 250 Data points Continuous column : 80 Data points SRC studies : 50 Data points

  21. NMP Extraction Technology for Production of Food Grade Hexane

  22. Extraction Technology for FGH / SBP Solvents Commercial Status • IIP-EIL Sulpholane Extraction Technology BPCL , Mumbai 25000 FGH, On stream,1989 80000 SBP CPCL, Chennai 25000 FGH, On stream,1992 • IIP-HPCL NMP Extraction Technology HPCL, Mumbai 50000 FGH, On stream,1997

  23. SUMMARY : FGH • Requirement of FGH is likely to grow in the coming future • NGL streams available from GAIL, ONGC Uran/ Hazira etc. has potential to produce FGH - opportunity for export • Opportunity for production of Petrochemical Grade Hexane

  24. Petrochemical Grade Hexane (PGH)

  25. Petrochemical Grade Hexane(PGH)

  26. Petrochemical Grade Hexane

  27. Specifications for PGH Characteristics Requirements Distillation IBP,oC Min 65 Distilled between 65-69oC, percent volume, Min 95 Non volatile residue, g/M3, Max 0.0001 Sulphur content, mg/kg, Max 1 Benzene content, ppmw, Max 1 Total arom, percent wt. Max 0.001 n-Hexane, wt.% > 40 Bromine Index, mg/100g 3 Colour saybolt +30 Cyclohexane content, wt.% 2 Total paraffin

  28. Cyclopentane Recovery FromNGL/ Light Naphtha Fraction

  29. PHASE OUT OF CFCs & HCFCs/HFCs

  30. CYCLO PENTANE AS BLOWING AGENT

  31. ADVANTAGE OF CYCLO PENTANE OVER CFCS

  32. SOURCES OF CYCLO PENTANE

  33. IBP-55°C CUT FROM ARN

  34. DATA GENERATED

  35. PRE-FRAC COLUMN ED COLUMN SRC COLUMN PENTANE FRACTIONATOR PENREC PROCESS FLOW-SHEET CYCLOPENTANE BUTANES i-PENTANE 1 BP-55CUT n-PENTANE 55-63 CUT C6-+ stream

  36. SUMMARY : CYCLOPENTANE • Requirement of Cyclopentane is likely to grow in the coming future • Present CP demands are met by imports • Streams such as at ONGC, Uran/ Hazira has potential to produce CP to meet Indian demand and opportunity forexport • Recovery of n and i-pentane as value addition

  37. THANK YOU

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