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

Scope: This standard specifies the method summary, instrument, sampling, instrument preparation, test procedure, result calculation, report, precision and deviation of the distillation test of heavy hydrocarbon mixture by vacuum distillation method. This standard is applicable to the distillation process of heavy hydrocarbon mixtures with initial boiling point higher than 150" and final boiling point lower than 565", such as heavy crude oil, petroleum fractions, residual oil and synthetic oil. Preparation of gas oil and lubricating oil fraction samples can be Refer to this standard for implementation. This standard can also be used to prepare residual oil for the production of raw green, but it is not always suitable. The long-term thermal cracking in this test may change some of its properties. Note 1: The maximum cutting temperature and It is related to the heating limit of the sample. For most samples, 565 is the highest cutting temperature that can be achieved, but for heat sensitive samples, the maximum cutting temperature will be significantly lower than 565 "C. Similarly, for heat insensitive samples, the maximum cutting temperature It can be slightly higher than 565 "C. Note 2: The test method specified in GB/T17280 can also be used for the distillation of crude oil with a cut point before 400°C. However, it cannot be directly compared with the distillation curve and distillate properties obtained by this standard.

GB/T 13377 Crude petroleum and liquid or solid petroleum products.Determination of density or relative density.Capillary stoppered pyknometer and graduated bicapillary pyknometer methods
GB/T 17280 Standard test method for distillation of crude petroleum—15-theoretical plate column
GB/T 1884 Crude petroleum and liquid petroleum products--Laboratory determination of density--Hydrometer method
GB/T 1885 Petroleum measurement tables
GB/T 4756 Method for manual sampling of petroleum liquids

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)

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