Common exhaust problems with Scotts
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This post was last edited by weihua110 on 2010-4-23 01:23. Guys, I’m not sure if your units use the Scott exhaust treatment system; could everyone share any problems they’ve encountered? For example, the operation of hydrogenation reactors, problems with online heating furnaces, common issues in quench towers, and common problems in absorption towers! Everyone is welcome to discuss and improve our collective experience.
This post was last edited by Qianxiafeng on 2010-5-30 00:13. When cooling the hydrogenation reactor, we use partial oxidation combustion gas and activate the injector – what level should the hydrogen content be kept at? I’ve always thought that the presence of hydrogen, especially when its concentration is high, at 5-10%, may cause the catalyst to become inactive. What do you all think?
This post was last edited by Qianxiafeng on 2010-5-30 00:13. Why is H2 kept at 5-10%? 2% is usually sufficient. On the one hand, it wastes H2, and on the other hand, it easily causes the incinerator to overheat. 2# weihua110
This post was last edited by Qianxiafeng on 2010-5-30 00:14. The hydrogen level is too low; oxidation may have occurred. Unstable fan operation, or fluctuations in gas levels, can be very problematic! 5–10% also seems very high to me; under normal circumstances we keep it around 2–5%! Our hydrogen is produced in an online heating furnace!
I also wonder if anyone else has noticed that the exhaust system is quite unstable, which can easily lead to non-compliant emissions; the environmental protection authorities are very strict regarding this. I wonder if companies like yours are facing this issue! If so, how do you handle it? Can we have a chat?
This post was last edited by Qianxiafeng on 2010-5-30 00:14. It does not become inactive during normal production, but it may become inactive during presulfurization