What does a failed Dr. Gasoline test in a hydrogenation unit relate to?

2017-01-04 View Original

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What does a failed Dr. Gasoline test in a hydrogenation unit relate to?

Reply #2 2017-01-04

Examine the specific conditions of the sample: if there is a black precipitate, it indicates the presence of hydrogen sulfide; if there is a brown precipitate, it indicates the presence of thiols

Reply #3 2017-01-05

The Doctor test is designed for hydrogen sulfide and thiols; if the stripping effect of hydrogenated gasoline is reliable, it indicates a high content of thiolic sulfur in the gasoline, which is due to insufficient hydrogenation or a decrease in the hydrogenation activity of the catalyst. If the stripping effect is poor and the hydrogen sulfide remaining in the gasoline is not completely removed, it is due to the combined action of hydrogen sulfide and thiol sulfur.

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