The effect of alcohols and aldehydes on the conversion catalyst?
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May I ask: What is the impact of a butanol and butyraldehyde content of less than 1% in a mixed gas on the conversion catalyst and the hydrodesulfurization catalyst? Can it be used to produce hydrogen?
It seems that no one has answered this question despite waiting for many days. Then I’ll try to answer it, and I hope everyone can discuss it together to find a solution. First of all, it is necessary to clarify one point: the active component of conversion catalysts is nickel. I’m not sure if this statement is correct, because in natural gas steam conversion, whether it involves primary conversion or secondary conversion, the active component of the catalysts is indeed nickel. Once this is clear, based on my experience, I can tell you that alcohols and aldehydes have no effect on the conversion catalyst. Why say that? That’s right; the process condensate reuse system in our company uses medium-pressure stripping. The steam obtained after stripping is directly fed into the first-stage furnace as process steam. Based on experience from several years of use, this approach has no adverse effect on the conversion catalysts. Since, on low-temperature shift catalysts, in addition to the carbon monoxide conversion reaction, methanol can also be produced, and methanol can be dehydrogenated to form formaldehyde; formaldehyde, in turn, can yield formic acid and methanol in hot alkaline steam. Therefore, low-temperature gas always contains trace amounts of methanol and other organic compounds, which are eventually removed along with the process condensate and sent to the water supply workshop through stripping. That’s why process condensate is also called methanol condensate. Of course, regarding your specific question, I can’t make arbitrary judgments, but you can draw your own conclusions based on this. This post was last edited by Huang Xinhui on 2009-2-27 00:50.]
Why is this post so quiet? I’m not sure if my answers are correct, and it seems like the moderators aren’t interested in this issue either. It’s recommended that this post be given more visibility. At the same time, I invite all forum members to actively participate in the discussions. The poster should also step forward and provide more detailed information to help everyone engage better in the discussion. Finally, I wish all marine enthusiasts a pleasant visit and a satisfying return, hoping that they can learn something and improve their skills. This post was last edited by Huang Xinhui on 2009-2-27 21:10]