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US 7,030,166 B2Granted
Process to enhance catalyst life and removal of debris
AssigneeSyntroleum Corporation
InventorsJames Leahy, Juan Inga
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Abstract
A process to optimize a slurry Fischer-Tropsch catalyst life and to further optimize removal of debris from a slurry Fischer-Tropsch process is provided. The process passes a part of a Fischer-Tropsch Reactor slurry inventory to another upstream Fischer-Tropsch Reactor where the Fischer-Tropsch reactors are connected in series. The process utilizes either multiple or a single transfer vessel and optionally, a motive gas.
Claims13
A Fischer-Tropsch synthesis comprising the steps of:
- (a) feeding synthesis gas into a first slurry FTR and recovering a first effluent comprised of C4+ hydrocarbons, water and unreacted syngas;
- (b) separating the unreacted syngas from the first effluent and feeding the unreacted syngas to a second slurry FTR;
- (c) withdrawing a second slurry portion from the second FTR slurry and transferring the portion to a first transfer vessel;
- (d) increasing the pressure of the second slurry portion in the first transfer vessel by feeding a motive gas to the transfer vessel wherein the motive gas has a pressure greater than the second FTR;
- (e) feeding the second slurry portion from the first transfer vessel into the first FTR;
- and
- (f) withdrawing a first slurry portion from the first FTR.
4 more elements
Dependencies are inferred from the claim text.