1 / 18

Information about polymer units of TVK

Information about polymer units of TVK . „… locally large , but globally small , … how can we do anymore ? „. Cyclical industry with frequent transitions on a dynamic market. PP4. Basic behavior of polyolefin units . PP3. * Transition grades were created in Q4, 2012.

menora
Download Presentation

Information about polymer units of TVK

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. Informationaboutpolymerunits of TVK „…locallylarge, butgloballysmall, …howcanwedoanymore? „

  2. Cyclical industry with frequent transitions on a dynamic market PP4 Basic behavior of polyolefin units PP3 * Transition grades were created in Q4, 2012

  3. TVK’s polymertechnologyreview The „troops” thatwehave

  4. PolyPropylene • PP: linearpolymerbuiltfrompropylene and insomecasescontainsalsoethylene • Tradename: Tipplen (TVK) • Three main types: homo PP, random copolymer PP (C2: 0.5-6.5%) and blockcopolymer PP (C2: 5-25%) • Properties: • Melt index: 0.2 - 80g/10 min (230oC/2,16 kg) • C2 content: 0.5 – 20wt% • Melting range: 140 – 165oC • Licensors: • PP3; PP4: LyondellBasell / Spheripol (loopRxwith monomer asdiluent)

  5. PP-3 Unit – 100 KTA (1989) PP-4 Unit – 180KTA (1999)

  6. BulkLoop vs. Gasphasereactortechnology • HigherCAPEX • EasyTemperatureControlatReactors • ShorterGradeTransition Time • NarrowerProductPortfolio (Itmeanslower C2 content random PP, TPO grades) • LowerVolatileContentinPP (Justat CR grades) • BetterCatalystActivity Spheripol PP advantage-disadvantage

  7. LowDensityPolyethylene • LDPE technologies: autoclave/tubularreactor • LDPE-2 Plantstartedin 1991. • Annualcapacity: 65 kt • Product • Tradename: Tipolen • Density: 0.919 – 0.925 g/cm3 • Melt index: 0.2 – 4.6 g/10 min (190oC/2.16 kg) • Main application: film blowing • Licensor: LyondellBasell tubular autoclave

  8. LDPE tubular vs. autoclave

  9. Shematicprocess of LDPE-2 Plant • Polymerisationtype: free radical • monomer: ethylene • iniciator: oxygenradicalformation starting of chaingrowth • modificator: propionaldehydetransmittingradicalactivity termination • comonomer: n-Buthylacrylateplasticity, polarity, shining of theproduct

  10. High/Medium Density Polyethylene • HDPE/MDPE: Polyethylenehavingonlyshortchainbranchesonthelinear main chain • Tradename: Tipelin (TVK) • Properties: • Density: 0.935 – 0.965 g/cm3 • Melt index: 0.1 - 50 g/10 min (190 oC/2,16 kg) • Melting range: 125 – 135oC • Licensor: • PE1/ HDPE-1: ChevronPhillips (loopRxwithlightdiluent) • PE2 / HDPE-2: MitsuiChemicals Inc. (stirred tank Rxwithheavydiluent)

  11. Extruder (210°C) Continuous Intensive Mixer (CIM) PE-1/HDPE-1 Unit – 200KTA (1986) Loop Reactor (90 – 106°C; 42barg) Flash Tank (60°C; 0,3barg) Flash Gas to recycling system ethylene Treaters Cyclone Bag Filter isobutane hexene-1 hydrogen Dryer (70°C) HDPE fluff to powder silos Purge Column (75°C) Powder Silos (8pcs) Additives Homogenizer Dryer Repellet HDPE pellets Classifier Scales • Silo farm (28 silos) • Bagging machines (2 lines) • Truck loading facility

  12. Comonomer Centrifuge H2 TEAL Daily tank Mixing silo Pellet Silo Dryer / 105°C Homogenizer VOC: ~33 -> 0,1wt% Powder Silo 220°C R1: 85°C/7barg R2: 75°C/2.5barg Packa-ging Fresh solvent Termék Solvent tank 2/3 1/3 Low Polymer (LP) PE-2 / HDPE-2 Unit – 220KTA 2004

  13. PE-1/HDPE1 vs. PE-2/HDPE-2 Advantages, disadvantagesinthe HDPE units • Less rotationmaschine - Higherreliability • Excellentdiluentrecovery • Broaddensityrange (0,962-0,935) • Lowercatalystcosts • Less steamconsumption • Lowervolatilecontent (instead of MDPE) • MI correctionintheextrusionsection • Higherelectricityconsumption • Justmonomodalproducts • Longertransitions • Lowerflexibility • Widerproductrange (mono and bimodal) • Shortergradetransitiontime • Highflexibility • Lowerpressureinthereactor part • Start and stop withoutflaring • Lower ESP intheextrusionsection • Possibilitytouse C3- instead of purchasedco-monomer • Highersteamconsumptioninthediluentrecoverysection • Higherspecificdiluentconsumption • Highervolatilecontent • Highermaintenancecosts

  14. ProcessControl - Optimization Trytofind…. …keepit… …automateit.

  15. General processcontrolscheme

  16. Optimization 3 basicrules: 1 – Safety 2 – Quality 3 – Economicgoals The economicalsituationforcesthepolymerproducerstofind „newoperatingregion”, and theywould be abletoadoptnewtechnicstoremainedthereineverydifferentworkpoints. Weakdemand

  17. The APC is not a „magicweapon”. This is thattoolwichcanhelpustokeeptheplantneartothe optimum continuouslyifthe operators arefamiliarewiththat. • The two most criticalbehaviors of a polymerplant: Non-linearity, multivariable APC the most commontoolforoptimization

  18. Thankyouforyourkindattention!

More Related