Patent ID: 6974844

Claim:
A process for starting up a slurry phase Fischer-Tropsch reactor, which process includes: establishing, in a slurry phase Fischer-Tropsch reactor, an initial charge of molten wax, with an initial reactor temperature which is below the line-out reactor temperature but sufficiently high for a Fischer-Tropsch reaction to take place, and with the reactor containing, in contact with the molten wax, a partial catalyst inventory which is less than its line-out catalyst inventory; feeding syngas into the reactor at an initial flow rate below the line-out syngas flow rate; initially maintaining a syngas H 2 :CO molar ratio at a value higher than 2:1; thereafter decreasing the syngas H 2 :CO molar ratio to its line-out value which is between 1:1 and 2:1; and increasing the syngas flow rate and the reactor temperature to their line-out values.