What is ASTM D2887?

American Society for Testing and Materials (ASTM International) Method D2887-12 is used to determine the boiling range distribution of petroleum products and fractions having a final boiling point of 538 °C (1,000 °F) or lower, a boiling range greater than 55 °C (131 °F), and a vapor pressure sufficiently low to permit …

Why it is impractical to use TBP analysis directly for daily monitoring of the crude distillation?

A single TBP distillation can take up to 48 hr, which makes it impractical for daily monitoring of refinery crude quality. It is performed at atmospheric pressure, and for that reason the maximum temperature at which the distillation is terminated is about 360º C.

What is a TBP analysis of crude oil?

The True Boiling Point (TBP) distillation (ASTM D2892) using a 15-theoretical plate column and 5:1 flux ratio is a classical method to obtain the distillation curve for a crude oil sample. The distillation fractionates the crude oil into a number of narrow fractions up to 400°C Atmospheric Equivalent Temperature (AET).

What is TBP data?

The True Boiling Point (TBP) analysis according to ASTM D-2892 standard is the single reliable tool for characterization of crude oil and petroleum mixtures in terms of their boiling point distribution.

What is ASTM D1160?

ASTM D1160 is used for the determination of the distillation characteristics of petroleum products, biodiesel, and petroleum fractions that may decompose if distilled at atmospheric pressure. Any of these properties can be the determining factor in the suitability of the product in its intended application.

What is Simdis analysis?

Simulated distillation (SIMDIS) by gas chromatography is often used in the petrochemical industry to analyze the composition of an oil or gas sample by measuring the boiling point range distribution of the sample components.

What is a TBP curve?

TBP curves are plotted between temperature of the hydrocarbon material present and volume percent of distilled. TBP distillation curves are generally run only on the crude and not on petroleum products.

What is TBP cut point?

Using a crude TBP curve, cut points are defined as the temperatures that represent the limits of a distillate fraction, as illustrated in Figure 4.11. Boiling ranges between the cut points represent distillate products, such as naphtha, kerosene, light gas oil, etc. …

What is the difference between TBP and ASTM?

TBP distillation is used to characterize crude oils and constitute a significant component of crude essay. ASTM methods are usually used for refinery products and property calculations and correlations for distillate fractions. EFV provides useful data for flashing operations in the refinery.

What happens during vacuum distillation?

Vacuum distillation is the process of lowering the pressure in the column above the solvent to less than the vapor pressure of the mixture, creating a vacuum, and causing the elements with lower vapor pressures to evaporate off.

What does Simdis stand for?

simulation and display
SIMDIS is a software toolset developed by Code 5770 at the US Naval Research Laboratory (NRL) that provides 2D and 3D interactive graphical and video displays of live and postprocessed simulation, test, and operational data. SIMDIS is a portmanteau of simulation and display.

What is TBP crude assay curve?

TBP curves are plotted between temperature of the hydrocarbon material present and volume percent of distilled. TBP distillation curves are generally run only on the crude and not on petroleum products. Typical TBP curves of various crude oils are shown in Figures 2.

Is the ASTM d2887 the same as TBP?

It is a simulated distillation using GC and similar to ASTM D2887, which is also very close to real TBP. You can either assume that it is the same as D2887 and enter it as wt% D2887 in PRO/II, or you can assume that it is same as TBP and enter it as wt% TBP.

How to convert ASTM D-86 data to TBP?

Daubert’s method for conversion of ASTM D-86 into TBP was the second closest to TBP after SD method, however, its accuracy was significantly lower than that of the simulated distillation. Content may be subject to copyright. tion = SD) and ASTM D-86 procedur es.

Which is better for separation ASTM or TBP?

TBP distillation achieves a higher degree of separation than ASTM and ASTM achieves better separation than EFV, as can be seen in the curves in Figure 4.10. Empirical correlations have been developed to convert one set of distillation data to another [7].

When to use d2887 for boiling point analysis?

This application note demonstrates a solution for D2887 procedure A for analysing Petroleum products covering a boiling point range of 36°C to 545°C. This procedure is not suited for biodiesels. For gasolines, method D7096 should be used.