Dewaxing Process Variables

The SGC system incorporates a CAD system, resin systems for the photocurable resin, the soluble wax support and ionographic toner for creating photomasks, a vacuum wiping system, a UV curing system and a dewaxing machine. Important process variables are... 

PROCESS VARIABLE EFFECTS 18.1 Crude Source Affects Dewaxed Oil Yield... 

Studies have shown that DWAs may be combined to give synergistic performance. Currently, because of the large number of variables (feed, DWA chemistry, etc.) it is not possible to predict DWA performance a-priori and DWAs must be tested in a pilot plant that can simulate the propane dewaxing process. Lab and analytical tests typically over predict DWA performance due to favorable conditions of the lab and inability to simulate the plant. 

In Older to explain the diverse deactivation behavior of the catalyst in processing these three types of feedstocks, we formulated a simplified dewaxing model which assumes that the dewaxing reaction can be described as an irreversible reaction (ix., cracking of waxy paraffinic molecules) coupled with a order catalyst deactivation reaction. The deactivation reaction is assumed to be conceniratioti independent while the fractional catalytic activity at any time Is a function of a number of variables including number of catalytic sites and concentration of poisons in the feedstock. 

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