Is DMDS injected continuously in practical use?
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Is DMDS injected continuously in practical use? Thank you all
It depends on the hydrogen sulfide concentration in the recycled hydrogen
DMDS is injected to control the H2S concentration in the circulating hydrogen; this concentration varies at different stages, and continuous injection is generally required to maintain an adequate H2S level.
Under normal conditions, it is used during the pre-sulfurization of the catalyst, and the decision is made based on the content in the recycled hydrogen
No. Start, stop, or adjust based on hydrogen sulfide concentration
Generally, injection is done continuously, with the injection rate being adjusted at different stages
Depending on the hydrogen circulation hydrogen sulfide content, injection can be done intermittently or not at all; it depends mainly on the sulfur content in the raw materials and the hydrogen sulfide content in the hydrogen circulation
Based on the hydrogen sulfide concentration in the circulating hydrogen, the pre-sulfidization stage, and the temperature rise in the reactor bed
NO! NO! NO! It is only used during catalyst sulfidation