Unification of methods for determining distillation curve of oils
For the determination of the distillation curve of oils, various types of flask are recommended by industry-branch standards (OST) and specifications (TU). For example, TU 6-02-1072-86 for PEF fluid and TU 6-02-921-74 for the chlorofluorocarbon oil UF specify a Claisen flask (GOST 25336-82); the standard OST 38.01402-86 for mineral-base vacuum oils specifies a specially designed flask; TU 6-01-26-54-85 for Alkarene type vacuum oils specifies a Bogdanov flask. The latter two flasks are not included in any State (GOST) standards for chemical laboratory ware and hence are not in regular production. The accuracy in determining the distillation curve depends on the separating ability of the flask. Flasks designed as shown do not allow return of part of the condensate to the still section, so that it is impossible to regulate the reflux rate and hence impossible to obtain any reliable data on the fractional composition of the product and the distillation temperature. The Claisen and Bogdanov flasks, which have a developed surface, are more suitable for fractionation of oils.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 39299
- Journal Information:
- Chemistry and Technology of Fuels and Oils, Vol. 30, Issue 1-2; Other Information: PBD: Sep 1994; TN: Translated from Khimiya i Tekhnologiya Tekhnologiya Topliv i Masel; No. 1, 31-32(Jan 1994)
- Country of Publication:
- United States
- Language:
- English
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