4 replies to this topic

Dear All,

As a chemical engineer with some years experience in oil, gas and chemicals, I am now facing a problem which I cannot solve....

I am creating a simulation of a NGL dehydration unit in HYSYS, but it is impossible to create a mole sieve in it.

Has anybody an idea?

Thanks in advance,

greetz from sunny Netherlands

[Steve McGahey]

Assuming you are working in steady state, how about adding a component splitter, and set it to split something like 99.5% of H2O and other small adsorbable molecules out of your main gas stream, leaving a relatively dry stream?

- Steve.

Hi Steve,

thnx for the quick reply.
I work in steady state model

I have never used the component splitter, but I am going to try to fit it in....

regards
Mark

[Padmakar Katre]

Dear,
If you could prepare the hand calculations based on the previous experience you can try to use the Spreadsheet Operation for calculations of the Mol Sieve outlet summary. And you could export these results from spreadsheet to the component splitter as the outlet streams specifications. Waiting for your comment.

[Zauberberg]

Using component splitter is the most suitable solution in modeling proprietary reaction systems, especially when product composition is fixed and known. You can do the same by applying method suggested by Padmakar, or by building a reaction set which describes MolSieve unit. However, this is (usually) unnecessary step; if you are interested only in getting the product gas with a given composition from MolSieve unit, component splitting is the straightforward solution.