Coking dry gas and natural gas hydrogen production plants, pre-sulfurization of cobalt-molybdenum hydrogenation reactors
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How to restart a natural gas-based hydrogen production plant after replacing the cobalt-molybdenum hydrogenation catalyst without shutting down operations
Natural gas is fed in directly, along with coking dry gas, for pre-sulfidization
I can only say you’re really amazing – you keep replacing the hydrogen reactors without stopping operation. Why? What abnormal conditions can cause problems with the hydrogenation catalyst?
I’ve never seen a spare hydrogenation reactor, but as the previous moderator said, shouldn’t the hydrogenation reactor in a hydrogen production facility be the normal one? Or has the olefin content suddenly increased? Or for some other reason, are there too many ASs?
For natural gas feedstock, feed it in directly! !
Is the approach to operate normally with natural gas until the hydrogenation reactor is completely sulfided, and then switch to feeding coker dry gas?
If pre-sulfurization of coking dry gas is used, won’t the hydrogen in the coking dry gas reduce the catalyst to its metallic form?
1. The properties of the catalyst need to be considered. 2. Sulfur is present in the coking dry gas
I think I understand what you mean, master. As long as sulfur is present, the catalyst will selectively react first with sulfur, while reactions that are detrimental to the device will be intelligently ignored by the catalyst. However, from the perspective of factory efficiency, keeping the sulfidation temperature below 230°C as stated in textbooks is actually of little use. The properties of the catalyst can be found in the instruction manual. Can I understand it this way? :)