3 replies to this topic

[titim]

Hi, everyone, i have a question , are there any relations between the purity of hydrogen produced by the catalytic reforming process and the Feedstock  used (qualite, densite...)(books, references...).

Best regards.

[colt16]

If you are referring to purely from the Reformer, the gas product H2 purity is definitely a function of feed composition. If you have higher naphthenes and aromatics (measured by N + 2A) definitely your reformate yield is higher and thus there is less production of cracked gas. This cracked gas (C1-C5) comes together with the H2. As you can expect, a more paraffinic (straight chain) will give you more gases.  

 

However Reformers are usually equipped with an LPG recovery system to recover this C1 to C5 and then there is a PSA unit to purify the H2 to a very pure H2 product. Therefore, regardless of the feed composition, if you have a PSA unit you will be able to get a very pure H2 product. What might change is not purity but the quantity. 

[majed 8008]

Hi, everyone, i have a question , are there any relations between the purity of hydrogen produced by the catalytic reforming process and the Feedstock used (qualite, densite...)(books, references...).
Best regards.

[SilverShaded]

As colt mentions more cracking will lead to higher levels of methane production which is what has the biggest impact on H2 purity.  Some units have refrigeration to knock out LPG, some don't.  Generally the net hydrogen gas is used to hydrotreat naphtha so i'm curious why you would alter feed type to try and imporve Hydorgen purity?