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"Distillation Tailor Made"

With an innovative solution again the distillation experts of ILUDEST were able to solve a very ambitious customer demand by putting into practice: optimized separation of crude oil into high temperature fractions, a process which cannot be effected by using one of the common ASTM-standards e.g. acc. to D2892 or D5236.

ASTM D2892 allows to fractionate crude oil samples by using a packed column (approx. 15 theoretical plates) up to approx. 400°CAET (2 mmHg).

The pursuing standard ASTM D5236 allows to fractionate crude oil samples up to approx. 540…565°CAET (0.1 mmHg), however, by using an open-tube column (approx. 2 theoretical plates). Hence, the overlapping range of fractions (= parameter for the separating quality) is huge, approx. 15…25°C and more. A customer in South Korea, served by ILUDEST with a comprehensive range of ASTM-units of different standards and sizes since many years, approached us with a demand far beyond the capabilities of those ASTM-standards. Thus the team of ILUDEST developed, designed and produced a distillation plant characterized by an "unusual" combination of parameters as follows:

  • high separation efficiency (25…30 theoretical plates) even under vacuum condition
  • low overlapping ranges (< 10°C)
  • fractions up to 600°CAET (thus beyond ASTM D2892/D5236)
  • operation pressure atm…0.001 mmHg (thus the actual vacuum is about 100 times lower than requested by ASTM D5236)
  • high distillation rates even at very low vacuum, thus the common ASTM-distillation times are not exceeded
  • large charges up to 200 ltr, which do allow the production of well defined fractions for developing new products.

Other R&D projects of ILUDEST currently in progress:

  • fully automated online version of the analyzer acc. to ASTM D1160
  • fully automated product sampling system out of oil tanks acc. to ASTM D4057 (no draining of tanks or modifying tank internals are required for installing the device)


ILUDEST Destillationsanlagen GmbH
Dachdeckerstr. 1
97297 Waldbüttelbrunn

Tel.: +49 (0) 931 497 090
Fax: +49 (0) 931 404 209 9

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Feel free to contact us, to discuss your individual project requirements with us. We will find the optimum solution for you too. Individual, flexible, competent.

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