News from “Distillation Tailor Made”…

01.02.2018

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

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)