Polymers from Oranges-Presentation

Polymers from Oranges-Presentation - Polymers from Oranges...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Polymers from Oranges Jerry Yang Chris Fogle Josef Dalaeli Basis for Project • Alternating Copolymerization of Limonene Oxide and Carbon Dioxide • Limonene is citrus peel oil • Combination of renewable resource and consuming excess carbon dioxide • Polymerization results in a polycarbonate plastic with properties similar to expandable polystyrene Project Benefits • Carbon dioxide is a cheap feedstock • Carbon dioxide is likely to remain cheap or become cheaper as pollution restrictions increase • Reduces dependence on oil derivatives, the current source of polystyrene • Reduces dependence on oil market Current Polystyrene Production Method • Polystyrene is produced from ethene and benzene. • Ethene and benzene are first combined to make ethylbenzene. • Ethylbenzene is dehydrogenated to make styrene. • Styrene is then used to make polystyrene. Flowchart of Current Production Method (Harry Blair Consultants) Benzene Ethene Ethylbenzene Styrene Hydrogen Catalyst, Heat Catalyst, Steam Initiator, Solvent Crude Natural Gas Refining Extraction Reformate Ethane Distn./ HDA Steam Cracking Polystyrene Major Risks • Feedstock depends on varying citrus market, prone to natural disaster • Industrial scale failure of experimental scale technology • Introduction of new material technologies that replace polystyrene Project Challenges • Based on new technology which has not been thoroughly tested • Involves different chemistry than oil derivatives, such as stereochemistry • Uncommon catalyst for industrial use • Limonene Oxide production versus purchase • Product will vary slightly from conventional polystyrene in an unknown manner Process Details • Reaction involves: – R-enantiomer of limonene oxide – Carbon dioxide at 100 psi – Beta-diiminate zinc complex catalyst – Nearly ambient temperature (25 C) – Methanol wash to remove catalyst and unreacted limonene oxide Process Reaction (Byrne) Limonene Extraction Products Oranges Juicing Juice (13% yield) Juice/Oil Mixture Cold-Press Oil (85-95% Limonene) (0.25% Yield) Orange Peels Decanting Pressing Oil/Waste Mixture Pressed Orange Peel Distillation (Waste Heat) Drying Dried Orange Peel Wastes Technical Grade Oil (85-95% Limonene) Treatment Livestock Feed Components (~17%yield) $0.78/ lb $0.03/ lb 31B lbs Brazil 22B lbs Florida $0.75/ lb $0.75/ lb $0.06/ lb Winterize Pure Limonene Limonene Supply...
View Full Document

This note was uploaded on 08/31/2011 for the course CHE 4273 taught by Professor Staff during the Spring '10 term at Oklahoma State.

Page1 / 30

Polymers from Oranges-Presentation - Polymers from Oranges...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online