Why are the high- and low-sulfur wastewater streams from hydrorefining sent to the sulfiding agent tank?
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I’m new to hydrogenation refining, and from the process diagrams I can see that the sulfur-containing wastewater resulting from the separation of high and low boiling points substances is sent to the sulfiding agent tank. Why is that? What are the components of sulfur-containing wastewater?
PH 8.76 Ammonia nitrogen mg/L 8609.11 Sulfides mg/L 17418.733 Chloride ions mg/L 211.45 Iron mg/L 0.200
Then what? Could you explain it?
The main components to be analyzed in wastewater are these; the rest is simply wastewater, which of course goes to the sulfiding agent tank
Can it be reused? To refill with water? Then cycle to a certain extent before proceeding with wastewater treatment?
After purification, water can be injected
It was determined that it was not the sulfur-containing wastewater flash tank but the sulfiding agent tank
It should be the acidic water stripping section of the desulfurization unit; what’s the point of going to the desulfurizer tank?
Yes, they said it’s to reduce equipment costs, as the sulfiding agent is only used in the initial stage. So, the sulfur-containing wastewater generated later is mixed with deionized water in the sulfiding agent tank and then injected into the system; after a few cycles, it is sent to wastewater treatment. That’s what they said.
Sulfur-containing wastewater cannot be used as reaction water either; the SN and other substances removed in the initial stage end up returning to the system. Doesn’t this pose a risk of corrosion to the equipment, pipelines, and the final products? The problem of corrosion is becoming increasingly serious, so it must be taken into consideration