What should be the range of hydrogen sulfide content after desulfurization in the desulfurization system of a diesel hydroprocessing unit?
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I control it at 1000–5000 ppm. I really don’t know the specific basis for it
It is best to keep it between 3000ppm and 5000ppm.
The hydrogen sulfide level after desulfurization here does not exceed 3000 ppm.
So high? We don’t invest in a desulfurization system – it costs around 3,000. After installing a desulfurization system, the cost is around 200
This depends on the sulfur content of the feed oil; if the sulfur content in the feed is low, the circulation hydrogen level needs to be kept high
The index doesn’t exceed 3000; usually, the amount for sample production is within 100.
The lowest possible level for hydrogen sulfide control after desulfurization is around 300 ppm; in fact, there are no studies indicating that maintaining such a low level would cause reduction of the catalyst. However, if the hydrogen gas circulating after desulfurization contains a high level of hydrogen sulfide, this will result in a high partial pressure of hydrogen sulfide, thereby affecting the desulfurization reaction. Therefore, in plants that produce gasoline and diesel meeting National V standards, it is necessary to control the hydrogen sulfide content in the hydrogen gas after desulfurization.