Dear Amin,

Do you mean, Gasoline Production by Dehydration of Dimethyl Ether?

I think NH4-ZSM-5 Catalyst is one of the best zeolite type catalyst for dehydration reaction

Hope this helping

Have a very good day

Or do you mean removal von water traces? There it depends on scope and conditions. Please clarify!

Zeolite 4A

dear amin; hope doing well at Khangiran gas processing company. the type of desiccant greatly depends on your feed stream characteristics. How much is feed water content? at what temperature and pressure?. overally, if you need dessicant you can use 3A as selective water removal, or 4A or even 5A, silica gel or activated alumina, but lighter hydrocarbons should be regarded in simulation. 

Thank you Very much for your qualified answers, actually the problem was dehydration of a product provided in a petro-refinery includes qualified gasoline and some trace impurities. First, Water content is a bit much more than applied standards and therefore unable to be provided as a product. obviously, both Zeolites and Silica-Gel are possibly able to be used. but the economy needs to be concerned either.

Dear Amin

If water is a problem, so you can use hydrophobic alumina to run the reaction

if you need more information about the preparation of hydrophobic alumina, please let me know

Thanks

Ahmed

silica gel is more cheaper than zeolite, but the order and the required dew point of water should be determined. if you need water dew point less than -80 C, zeolite is the best.

Is it MgSO4 or CaCl2.  If zeolite means 4A.

Well, for production use you would prefer an adsorbent that can be regenerated, and this is much easier with silica and zeolite, but much more difficult with inorganic salts. These are mostly single use.