MaxEne Process
The MaxEne process is an innovative method that can enable you to
better utilize your naphtha feedstocks. It can increase your yield
of ethylene from naphtha crackers by 30% or more. This increase in
ethylene yield is achieved by increasing the concentration of normal
paraffin (n-paraffin) in the naphtha cracker feedstock.
The MaxEne process utilizes adsorptive separation to recover C5-C11 n-paraffins
from naphtha. The MaxEne process is one of the newest applications of UOP’s
Sorbex technology. More than 100 process units based on Sorbex technology have
been licensed worldwide.
Naphtha is the most common feedstock sent to naphtha cracking units for the
production of ethylene. A typical naphtha feedstock contains a mixture of paraffinic,
naphthenic, and aromatic hydrocarbons with varied molecular weight and molecular
structure. The compositions of naphtha feedstocks vary considerably, yet the
composition has a significant impact on ethylene and byproduct yields. Normal
and non-normal paraffins convert to ethylene in a cracker, but the ethylene
yield from n-paraffin is much greater.
Coincidentally, refiners and aromatics producers seek naphtha feedstocks that
are depleted of n-paraffin. Naphtha that is depleted of n-paraffin contributes
more octane value to the refiner’s gasoline pool and increases the aromatics
yield in an aromatics complex.
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