Refinery propane failing the copper strip test - Chemical process engineering - Eng-Tips - propane copper strip corrosion

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propane copper strip corrosion - ASTM D1838 - 16 Standard Test Method for Copper Strip Corrosion by Liquefied Petroleum (LP) Gases


Jan 01, 2003 · Carbonyl sulfide (COS), which occurs as an impurity in commercial sources of propane, can hydrolyze in the presence of water to form hydrogen sulfide (H2S) and carbon dioxide (CO2). All commercial and HD-5 grade propane isrequired to pass the Cited by: 9. ASTM D1838-16, Standard Test Method for Copper Strip Corrosion by Liquefied Petroleum (LP) Gases, ASTM International, West Conshohocken, PA, 2016, www.astm.org.

The copper strip corrosion test is designed to assess the relative degree of corrosivity of a petroleum product. 1. Scope. 1.1 This test method covers the determination of the corrosiveness to copper of aviation gasoline, aviation turbine fuel, automotive gasoline, cleaners (Stoddard) solvent. Carbonyl sulfide (COS), which occurs as an impurity in commercial sources of propane, can hydrolyze in the presence of water to form hydrogen sulfide (H2S) and carbon dioxide (CO2). All commercial and HD-5 grade propane is required to pass the copper strip corrosion test, ASTM Test Method D 1838. While it is known that hydrogen sulfide will cause the failure of the copper strip test, it is Cited by: 9.

Feb 23, 2010 · We have had problems with our propane failing the copper strip corrosion test. We recently started more frequent testing of our propane. We have also recently switched KOH manufacturers. We don't routinely test upstream of the KOH treater, but anytime that we have--the results turned out good. Downstream of the KOH treater can be all over the map. In our studies, mixtures of COS in propane were never Copper Strip Corrosion Tests on H2S + Propane. observed to fail the copper strip corrosion test, even at On the basis of the reports in the literature, one would 1000 ppm (mass/mass), a COS level which, in LPG, have expected moderate concentrations (50 to 100 ppm, would be considered massive.

The number ranges from 1 to 4 after a comparison with the ASTM copper strip corrosion standard is done. There are several methods and tests available. One is the test bomb bath, 7151K59. In this test a thermostatically controlled water bath is used to immerse copper strip corrosion test bombs. All commercial and HD-5 grade propane is required to pass the copper strip corrosion test, ASTM Test Method D 1838. While it is known that hydrogen sulfide will cause the failure of the copper strip test, it is widely believed that the hydrolysis of carbonyl sulfide can also cause the failure of the corrosion test.