Question
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In catalytic reforming Process:
- increasing the initial boiling point leads to increasing in hydrogen production. Any Explanation ?
- How can we increase the purity of the hydrogen (recycle gas) ?
- What is the maximum allowable moisture (ppm) in the feed (Heavy Naphtha) ?May-2022
Answers
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MANISH PATEL, KIPIC, manish.patel002@gmail.com
Increasing IBP will lead to heavier molecules C6 and Higher precursor for Aromatics, which will ultimately increase dehydrogentation and produce more Hydrogen
If acid function is increase, resulting in higher cracking H2 purity will be reduced.
If by any means (due to any poison in reformer feed) dehydrogenation function is reduced H2 purity& production will decreased.
Optimum moisture in reformer feed is 1-5ppmw. However moisture is mainly monitor in recycle gas (optimum 15-25 ppmv)
Excessive moisutre more than 50 ppmv will result in elution of Cl on reformer catalyst.However if mosiure<10ppmv Chloride function will be enhanced.
Optimum moisture in Recycle gas is essential to maintain Cl balance on reformer catalyst.
Aug-2023
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Joseph Gentry, GTC Vorro Technology, jgentry@gtcvorro.com
If the dehydrogenation into aromatics is greater than the cracking reaction into light paraffin's, then more hydrogen is produced. This may happen when moving from heavy naphtha into a more full-range that captures toluene and benzene precursors. At a certain point, lighter feed will no longer produce more hydrogen.
May-2022
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