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Astm Table For Crude Oil Full Access To

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Harvard Metrohm AG. 2020. Ensuring Accuracy of Acid Number Crude Oil and Refined Petroleum Products by ASTM D8045.

Directly influencing how the oil is processed, just a small change in acidity can lead to corrosion within the refining process and considerable adjustments in barrel pricing.

Until now, it has been difficult and ineffective to ensure the accuracy of acid number in these samples.

Refineries can reduce their raw material costs and drive up their margins on refined products by combining opportunity crude with well-defined samples.

In spite of their potential economic benefits, these opportunity crude oils are discounted because of the risk associated with processing petroleum products that contain high levels of naphthenic acid.

A federal corrosion report sponsored by NACE remains the landmark report, which estimates the yearly cost of corrosion in U.S.

The gap analysis of the report projects a direct profit loss that ranges from 2 to 12 billion owing to disruption in refinery operations caused by corrosion-related shutdowns.

Written to address acidity in lubricant products, conventional potentiometric techniques need huge amounts (up to 120 mL) of solvent and detailed electrode care procedures.

In the year 2008, major petroleum industry leaders appealed for a new test method from ASTM.

Being a member of ASTM, Metrohm collaborated with the petroleum industry to develop the D8045 method a thermometric titration standard that deals with these problems while enhancing reagent expenditure and analysis time.

Astm Table For Crude Oil Plus Titrant As

Just like standard titration methods, the endpoint is indicated at the point of surplus titrant as soon as the titrant neutralizes the targeted unknown sample species.

Thermometric titration is better than conventional titration methods as it uses a maintenance-free sensor that requires no reference solution, no calibration and minimal total sample volume.

Thanks to solvent resistant construction, the sensor is not affected by harsh solvents or difficult samples.

Compared to potentiometric, up to 30-times more data is obtained for thermometric measurements.

Noise is filtered out by Metrohm instrument algorithms to create a smooth curve with a single, well-defined endpoint, as indicated in Figure 2.

Thermometric acid number by ASTM D8045 uses a solvent mixture of 2-propanol and xylene in a ratio designed to sufficiently disperse complex crude oils.

An average lab running 20 samples per day can save as much as 30,000 per year in solvent expense alone.

Besides material savings, thermometric titration also ensures laboratory efficiency gains over potentiometric titration.

Further, potentiometric method D664 requires regeneration time and electrode cleaning while thermometric titration through D8045 does not require any additional sensor regeneration.

In refinery operations, quick decisions based on accurate acid number need to be made in order to prevent corrosive damage to valuable infrastructure.

For instance, the catalytic cracking units integrate expensive catalyst, high temperature and pressure to transform heavy vacuum gas oil fractions into revenue generating gasoline products.

One example is a shutdown in this process, where quick acid number results can save millions of dollars for a refinery.

This thermometric method solves acidity accuracy and sample solubility and offers better agreement between sellers and buyers of petroleum products and is a proposed standard to add to these agreements.

Metrohms collaboration with the ASTM to develop the method D8045 as well as the acceptance of thermometric titration as an international standard presents new opportunities for the adoption of other standards where faster analysis times, reduced solvent toxicity, and increased accuracy are urgently required.

Application research has also been completed to document how thermometric titration can be exploited to bring faster titration times and reduced solvent toxicity and consumption to total base number analyses.

Industry requirements within ASTM will be the driving force behind the implementation of thermometric titration in the determination of total base number.

Ensuring Accuracy of Acid Number Crude Oil and Refined Petroleum Products by ASTM D8045.

AZoM. 26 March 2021..

Chicago Metrohm AG.

AZoM. (accessed March 26, 2021).

Harvard Metrohm AG.