Patent ID: 7727378

Claim:
A process to prepare a waxy raffinate product, the process comprising: (a) subjecting part of a Fischer-Tropsch synthesis product to a hydrogenation step to remove oxygenates and olefins from the Fischer-Tropsch product; (b) isolating for the hydrogenated Fischer-Tropsch product two or more wax grades, wherein at least one wax grade has a congealing point between 30 and 80° C. and at least one heavy grade has a congealing point of above 90° C.; (c) mixing part or all of the heavy wax with another part of the Fischer-Tropsch synthesis product to obtain a Fischer-Tropsch product having a weight ratio of compounds boiling above 540° C. and compounds boiling between 370 and 540° C. of greater than 2 to be used in step (d), wherein two or more grades of a paraffin wax having a congealing point ranging from 30° C. to 120° C. and a waxy raffinate product are prepared simultaneously; (d) subjecting the Fischer-Tropsch derived product having a weight ratio of compounds boiling above 540° C. and compounds boiling between 370 and 540° C. of greater than 2 to a hydroconversion step; and (e) fractionating the effluent of step (d) to obtain products boiling in the fuels range and a waxy raffinate product boiling between 350 and 600° C.