The function of the hydrogen production mixer
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Dear seniors, after hydrogen production and desulfurization, the dry gas and steam are mixed together before entering the converter. Is this mixer very important? My workshop once removed the metal packing from the mixer; after the unit operated for a year, the parameters of the conversion process remained essentially unchanged. Personally, I think there is a raw material preheating stage as well as an upper collection tube before the conversion process; a mixer is not necessary, but I’m not sure. I hope experts can give me some guidance!
It doesn’t have much effect. The mixer is used to ensure more thorough mixing of steam and the raw materials. Ensure even distribution as it enters the furnace tube. The actual impact is minimal.
The function of a mixer is to improve the uniformity of mixing two or more materials, which has a significant impact on conversion efficiency and product quality.
It’s better to keep it as is. The purpose of the mixer is to ensure uniform mixing of steam and the feed gas; of course, the number of bends in the piping from the mixer to the distribution pipe also contributes to mixing, so there won’t be much impact in the short term
I’m not worried about the uniform mixing of steam and feed gas, as the gaseous components mix well, but I wonder whether there is a check valve in the feed gas pipeline before the mixer to prevent steam from entering it.
I also want to ask the question from above. Since the purified gas and steam are mixed at the mixer, in the event of an emergency in the plant where the feed gas supply is cut off and the nitrogen pressure is low, preventing it from being introduced into the feed gas system in a timely manner, it is necessary to maintain a supply of steam at a certain temperature level to prevent the conversion furnace from burning out. However, could steam flow back through the mixer into the hydrogenation and desulfurization systems, thereby causing catalyst degradation? We have previously studied whether the mixer has a check function, but we have not reached a definite conclusion; please offer some guidance.