If there are still iron ions in the water used for injection, what impact does that have on the water used in hydrocracking?
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The condensate water from our plant’s condensing steam turbines is intended to be used in the hydrocracking feedwater tank, but tests have shown that the iron ion levels are too high. I’m not sure whether it can be used as feedwater, mainly due to concerns about the formation of ferrous sulfide. In addition to blockages caused by ammonium salts, another issue is ferrous sulfide, which can catch fire spontaneously when exposed to air. This is something we all know. If iron ions have no effect, are there any technical documents that can support this? I hope everyone here can help solve this problem
Excess iron ions cause blockages other than those resulting from ammonium salts; the deposition of ferrous sulfide under high-pressure air cooling and in cold high-pressure fractions increases, leading to blockages and corrosion. Deviations in high-pressure air cooling and poor drainage of cold high-pressure fractions further increase the difficulties associated with maintenance and alkali washing. Furthermore, iron ions may enter the distillation system, increasing the iron content in the tail oil; if they circulate back into the reaction system, it can have an impact on the catalyst.
The iron ions in the injected water shall not exceed 1 ug/g
Hehe, I know the standard for that iron ion concentration; it’s the API from the United States. The target value is 0.1, with a maximum of 1
So, logically, shouldn’t there be any iron ions in the material that comes out of the hydrocracking reactor? I think it should be there. As for hydrogen sulfide environments, we can’t prevent them; the key is to control their concentration, is that what you mean?