In refining and hydrogenation processes, what level should the hydrogen sulfide content in the recycled hydrogen be controlled at?
Thread Content
In refining and hydrogenation processes, what level should the hydrogen sulfide content in the recycled hydrogen be controlled at?
Between 300 and 500; values that are too high affect hydrogen purity, reduce the rates of desulfurization and aromatic saturation, and increase pipeline corrosion. Values that are too low cause the catalyst to be easily reduced to pure noble metals. Generally, as long as the sulfur content in the feedstock is not too low, it is acceptable for the recycle hydrogen to contain no hydrogen sulfide. If the sulfur content of the raw material is too low, it is necessary to consider adding a sulfiding agent.
3000 to 50,000, I guess?
During vulcanization, it’s also around 15,000
500---3000PPM