Methanol synthesis catalyst unloaded without deactivation!
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This post was last edited by nianlike on 2016-2-25 at 11:05. Has anyone ever removed a methanol synthesis catalyst without it becoming deactivated? Theoretically, it’s extremely dangerous! Request an instance! Looking for practical experience! Points will be awarded for useful replies!
In the process of producing methanol as a by-product of ammonia synthesis, the catalysts in the methanol tower were removed in this manner; by that time their activity was already very low. They were removed after cooling, and in case of fires, they were extinguished with water. Those specialized in producing methanol have not done this.
Catalyst manufacturers also do not recommend doing this; we haven’t done it before either, but this time we are under a lot of time pressure! I want to see if any organizations have done this before and what the risks are! Are there any specific tips!
I haven’t heard of anyone doing this with monohydric alcohols; it’s extremely dangerous. The reasons are, first, the large volume that needs to be loaded, and second, the issues related to the method of unloading. Unlike in the case of polyhydric alcohols, where the internal components can be lifted out by simply turning it over. Now, some companies carry out passivation before removing the catalysts, and safety considerations are receiving increasing attention from businesses.
Methanol synthesis catalyst discharged without passivation
Sure, nitrogen can be continuously supplied to the synthesis tower during the unloading process; if there is a discharge port, the material can be discharged directly and will naturally passivate in air. During the unloading process, have fire hoses ready to extinguish any fires that may occur promptly.
Fill with water, water it, cool it down and let it dry – it’s quite dangerous; watering is required after removing it.
Have you actually done it? Is there any plan or something?
We have done it; ours doesn’t have a discharge port. Nitrogen is introduced during the unloading process, and workers use long-handled respirators to work inside the tower.
Safety first; do not allow safety accidents to occur due to rushing~~ It must be passivated before it can be removed~~
Unload it after passivation; it’s too dangerous. Safety cannot be ignored in order to save time