GB/T 17475-1998
Standard test method for distillation of heavy hydrocarbon mixtures (Vacuum potstill method) (English Version)

Standard No.

GB/T 17475-1998

Language

Chinese, Available in English version

Release Date

1998

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2020-10

Replace By

GB/T 17475-2020

Latest

GB/T 17475-2020

Scope

This standard applies to the distillation process of heavy hydrocarbon mixtures with an initial boiling point higher than 150°C, such as heavy crude oil, petroleum fractions, residual oil and synthetic oil. Under fully enclosed conditions, use a still with a low-pressure drop mist separator for operation. This standard specifies the distillation conditions and the appearance and size of the equipment, and shows diagrams for special parts. This standard can not only prepare standard quality residual oil samples, but also can prepare standard quality diesel oil and lubricating oil fraction samples. The whole distillation process is described in detail in this test method. In addition, the cutting temperature (AET-corresponding temperature under normal pressure, the same below) obtained by this test method for drawing this standard distillation curve may be the highest temperature that can be obtained by conventional distillation methods. Cutting temperature (AET) can reach up to 565°C. The maximum cutting temperature is related to the heating limit of the specimen. It is recommended to use the test method GB/T 17280 for the distillation of crude oil whose cut point is before 400°C. This method is only applicable to heavy oil with an initial boiling point higher than 150°C. The distillation curves and fraction properties obtained by these two distillations are not directly comparable. This standard adopts legal units of measurement (the units in brackets are for reference). This standard deals with certain hazardous materials, operations and equipment, but it is not intended to make recommendations on all safety issues related to this. Therefore, users should establish appropriate safety and protective measures and determine the applicable management system before using this standard.

GB/T 17475-1998 history

• 2020 GB/T 17475-2020 Standard test method for distillation of heavy hydrocarbon mixtures—Vacuum potstill method
• 1998 GB/T 17475-1998 Standard test method for distillation of heavy hydrocarbon mixtures (Vacuum potstill method)