Reformation reduction hydrogen
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Is the hydrogen used for reformation reduction derived from high-purity hydrogen via PSA, or is it hydrogen produced by the reformation unit? If the booster stops suddenly, what impact does it have on the lifting gas and hydrogen, and how can this be resolved?
Reformed pressurized hydrogen can be used, as well as hydrogen purified by PSA. When the booster stops, the catalyst regeneration section is treated as if it were also stopped.
When the booster stops, the catalyst regeneration section is treated as if it were also stopped
The IFP process uses PSA hydrogen; a shutdown of the booster pump means catalyst regeneration has stopped
If the booster suddenly stops, the regeneration system will shut down automatically – there’s no need to worry about that; dealing with other aspects is more important
The hydrogen we use for reduction is the hydrogen produced in hydrogen generation. Due to the high content of C2+ components in the reformed hydrogen, coking occurs quite severely in the electric heaters used for reducing hydrogen; therefore, reformed hydrogen is only used to increase the hydrogen concentration. When the booster trips, the hydrogen supply is interrupted, and the catalyst circulation is handled as if the system were shut down; however, reducing hydrogen is still available
If the booster stops, then doesn’t the sealing gas also stop flowing? Oil and gas end up going into the catalyst – what should be done? Should I close the manual valves on the reactor and the lower hopper?
I use a system for hydrogen production; the purity of the hydrogen produced is quite high, at 94%. When the compressor stops, the system pressure rises, which triggers an interlock that causes the system to shut down. However, some hydrogen will still be present due to the connection between this system and the external hydrogen pipeline. (Recently, when my compressor stopped, the amount of hydrogen used in the reduction process remained normal, as the pressure in the reduction section was low.)
Generally, PSA hydrogen is better. I have been involved in two reforming units: one that used reforming hydrogen directly, and another that used PSA hydrogen. PSA hydrogen has a high purity, generally exceeding 99%, making it suitable for use in the reduction section. If the booster fails, the regeneration system stops automatically, so there is no need to worry about other issues. Once the booster is turned on, starting regeneration will be fine.