1 / 33

Production of Gasoline Components from Synthesis Gas

Production of Gasoline Components from Synthesis Gas. ChE 397 Senior Design Group Alpha Ayesha Rizvi Bernard Hsu Jeff Tyska Mohammed Shehadeh Yacoub Awwad 2011.02.15. Recap. H 2. Block Flow Diagram. DME. Light Gas. CO. Methanol to Gasoline Reactors. MeOH. H 2 O. Methanol

byron-gay
Download Presentation

Production of Gasoline Components from Synthesis Gas

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. Production of Gasoline Components from Synthesis Gas ChE 397 Senior Design Group Alpha Ayesha Rizvi Bernard Hsu Jeff Tyska Mohammed Shehadeh YacoubAwwad 2011.02.15

  2. Recap H2

  3. Block Flow Diagram DME Light Gas CO Methanol to Gasoline Reactors MeOH H2O Methanol Reactor DME Reactor H2 MeOH Crude Gasoline H2O, trace contaminants Wastewater treatment Distillation Columns Heavy Gasoline Light Gasoline Storage

  4. Overall Flowsheet Mass Balance Basis: 3307 Tons per Day Syn Gas

  5. Syngas to Methanol MeOH: 8226.65 lbmol/hr CO: 8611.72 lbmol/hr H2: 17223.45 lbmol/hr CO: 141.09 lbmol/hr H2: 18.48 lbmol/hr CO: 243.98 lbmol/hr H2: 594.88 lbmol/hr Mass Balance Basis: 3307 Tons per Day Syn Gas

  6. DME reaction MeOH: 8226.65 lbmol/hr MeOH: 2468.00 lbmol/hr DME and H2O: 2879.33 lbmol/hr Mass Balance Basis: 3307 Tons per Day Syn Gas

  7. Methanol to Gasoline Effluent: 8226.65 lbmol/hr

  8. After the MTG Reaction

  9. Cooling Separator

  10. End Refining LPGPRG

  11. Final Recycle

  12. Material BalanceMethanol Reactor

  13. Material BalanceDME Reactor

  14. Material BalanceComponent Profile Assumptions All H2 is taken away in the light gas All CH4 is taken away in the light gas All ethane is taken away in the light gas 30% of the propane is taken away in the light gas None of the butane is taken away in the light All CO/CO2 is lost in the light gas All water is immiscible with the other components, leaves completely Remaining components are in the second liquid phase Continued above

  15. Liquid Hydrocarbon Components

  16. Material BalanceLPG Flowrates Assumptions All of the remaining propane goes out the vapor stream All of the remaining butane goes out the vapor stream 10% of the pentane goes out the vapor stream The liquid component out the stripper is our final product

  17. Material BalanceProduct Composition

  18. Energy Balance MeOH rxn MeOH DME H2O ΔHF=Σm*cp*(Tout-Tin)+Q Q:heat loss to surroundings Tin=590°F Heat of formation: ΔHF= m DME,outΔHF(DME)+m MeOH,outΔHF(MeOH)+ mH2O,outΔHF(H2O)- mMeOH,inΔHF(MeOH) = -29.2 MM Btu/hr

  19. Energy Balance At heat loss of 3400 Btu Tout= 860°F Heat loss to surroundings negligible Reactor Sizing: PV=nRT V=315.6 Ft3 diameter d=8 Ft , height h=25 Ft considering the reactor as a cylinder Area=2*pi*(d/2)*h+2*pi*(r2 /4) =729 Ft2 Residence Time: 5 seconds for MeOH and Durene Reactor. 10 seconds for MTG Reactors.

  20. Equipment Costs

  21. Pricing Gasoline What affects the Gasoline Prices • Seasonal Switch in Gasoline blends • Crude Oil Cost • Taxes and Fees • Supply and Demand • Transportation and Distribution Cost http://www.api.org/aboutoilgas/gasoline/upload/PumpPriceUpdate.pdf

  22. Economics of Products • Average gasoline price in the city of Chicago is $3.29 per gallon • Nationwide the average is $3.13 per gallon • Our gasoline price with low olefin and low Durene is roughly about $ 2.63 per gallon • Product: $84.6 Million / year • LPG : $5.4 Million / year

  23. Major Components of Gasoline

  24. Major Components of Gasoline

  25. Refinery Whiting, IN Refinery Joliet, IL Newton County MTG Process, IN

  26. Transporting to Refineries Joliet, IL Whiting, IN • Key supplier of refined petroleum products to the Midwest. • 250,000 barrels of crude per day • Produces ~9 million gallons of gasoline, diesel fuel/day. • 405,000 barrels of raw crude oil/day • Produce 15 million gallons refining products. • Whiting Refinery Modernization Project http://www.bp.com/sectiongenericarticle.do?categoryId=9030203&contentId=7055766#7205736 http://www.exxonmobil.com/Corporate/Files/joliet_brochure.pdf

  27. Transport of Gasoline • Pipeline transport • Railroad transport • Gasoline truck transportation

  28. Gasoline Blending Conversion process in petroleum refining

  29. Questions from Presentation 1 • Catalysts: How long do they last? • ZSM-5: Pressure and temp (305 psi, 350ºC) is 52 days • Is gasoline >10% olefins? • No, our product is 3.73 wt% olefins. • May change with other conditions

  30. Durene • High melting point • 3-6% from literature • 2% Limit • 1% in our gasoline • Blending • Other Methods

  31. End!

  32. Questions From Last Presentation • Removal of the water is desirable because the catalyst may tend to become deactivated by the presence of the water vapor at the reaction temperatures employed, but this step is by no means essential

  33. Sulfuric Acid Alkylation • The Alkylation reaction combines Isobutane with light Olefins primarily a mix of Butylene and Propylene in the presence of a strong acid catalyst, Sulfuric Acid • This process results in upgrading the gasoline blend to a high octane blending component. • Low Olefin Content (3.73 wt%)

More Related