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4. Main recent improvements
The main trends observed over the last decade in the processing of aromatic essences are :
significant growth (a few new aromatic complexes per year), production capacity in Asia and the Middle East;
an increase in production capacity at sites under construction. In ten years, the typical capacity of a new aromatics complex has risen from around 300,000-400,000 t pX/year to around 1 million tonnes pX/year, with an average capacity of 200-250 kt pX/year;
the emergence of Chinese technologies, catalysts and adsorbents, particularly on the Asian market.
From a technical point of view, the improvements and refinements developed in recent years for the aromatic complex relate more specifically to the following points:
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Bibliography
Websites
International Zeolite Association IZA http://www.IZA.org
Standards
- Benzène-485 (1995) - ASTM D 835-95 -
- Benzène-535 (2010) - ASTM D 2359-10 -
- Benzène-545 (2008) - ASTM D 4374-08 -
- Benzène pour cyclohexane (2008) - ASTM D 5871-08 -
- Toluène pour toluène diisocyanate (TDI) (2009) - ASTM D 5606-09 -
- Mélange de xylène pour extraction du paraxylène (2010) - ASTM D 5211-10 -
- Éthylbenzène (2009) - ASTM D 3193-09 -
- Paraxylène (2009) - ASTM D 5136-09...
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