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Choosing A Fluid Package In Hysys

mercury mercury removal unit modelling simulation engineering

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#1 processengineer1989

processengineer1989

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Posted 15 February 2018 - 11:54 AM

Hello everybody.

 

I am trying to simulate a gas processing unit with Mercury in the Gas Feed Stream in Hysys.

 

My questions are:

    - is what is the best Fluid Package to choose for this purpose?

    - Since Mercury can't be found ONLY in one form in Natural Gas rigs (Hg, DimethylMercury: Ionic, Organic and non-Organic forms ... ) I would like to simulate these cases in hysys; Problem is that the data base of hysys doesn't contain these compounds; SO WHAT should I do to simulate it??

 

I attateched a screenShot of the Hysys simulation with Pure Mercury.

 

Thank you 

 

Attached Files



#2 Bobby Strain

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Posted 15 February 2018 - 02:02 PM

Sarah,

 

     You should forget about simulators for predicting mercury compounds in natural gas. One typically just provides sulfur impregnated carbon in a packed bed to remove it from the gas phase. And, if it is present in the condensate, a separate packed bed is generally installed to treat it.

 

Bobby



#3 processengineer1989

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Posted 15 February 2018 - 02:44 PM

Sarah,

 

     You should forget about simulators for predicting mercury compounds in natural gas. One typically just provides sulfur impregnated carbon in a packed bed to remove it from the gas phase. And, if it is present in the condensate, a separate packed bed is generally installed to treat it.

 

Bobby

Really!

Because I wanted to verify many configurations for the future Mercury Removal Unit we're willing to install in our Gas processing Plant.

 

I thought if I change the point where I inject the regeneration Gas back into the unit like I did in the simulation, I could reduce the emount of mercury in the Feed Gas in the entrance so I don"'t need a big Mercury Adsorbant bed in my Plant !

 

It's just kind of a game! I hope I don"t fall into this trap of wasting my time for an absolute illogical reasoning :s



#4 Bobby Strain

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Posted 15 February 2018 - 03:35 PM

You probably won't find any data to substantiate the results from a simulation. So, you should bite the bullet and proceed with the usual solution. You might get some help from your adsorbent supplier. You will likely have a mercury spec on the condensate so it, too, must be treated through a mercury removal system.

 

There is considerable risk, brazed aluminum heat exchanger failure, if the mercury is not completely removed. So a small bed that did not perform as expected would need the adsorbent changed more frequently. Don't be a pioneer!

 

Bobby






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