초록 ▼

Partially deactivated catalyst in a slurry hydrocarbon synthesis process is rejuvenated employing a cyclic rejuvenation process in which syngas or CO flow into the slurry is stopped to stop the hydrocarbon synthesis reaction, the CO purged out of the slurry with a purge gas in the presence of hydrog

Partially deactivated catalyst in a slurry hydrocarbon synthesis process is rejuvenated employing a cyclic rejuvenation process in which syngas or CO flow into the slurry is stopped to stop the hydrocarbon synthesis reaction, the CO purged out of the slurry with a purge gas in the presence of hydrogen, the catalyst rejuvenated with a hydrogen containing rejuvenating gas and the hydrocarbon synthesis reaction restarted by passing the synthesis gas feed back into the reactor. All or a portion of the purge gas and/or the rejuvenating gas may be recycled during the respective purge and/or rejuvenation. The hydrogen required during the purge is typically part of the purge gas.

대표청구항 ▼

[ What is claimed is:] [1.] A process for rejuvenating reversibly deactivated catalyst particles in a three phase hydrocarbon synthesis slurry comprising said particles and gas bubbles containing H.sub.2 and CO in a hydrocarbon slurry liquid into which a mixture of CO and H.sub.2 is flowing, said pr

[ What is claimed is:] [1.] A process for rejuvenating reversibly deactivated catalyst particles in a three phase hydrocarbon synthesis slurry comprising said particles and gas bubbles containing H.sub.2 and CO in a hydrocarbon slurry liquid into which a mixture of CO and H.sub.2 is flowing, said process comprising reducing the CO content of said mixture entering the slurry to less than 10 mol %, the H.sub.2 /CO being greater than 3/1 followed by passing a CO free purge gas and H.sub.2 through said slurry to remove said CO and form a CO reduced slurry and then passing an H.sub.2 containing catalyst rejuvenating gas through said CO reduced slurry to at least partially rejuvenate said catalyst particles and form a rejuvenated catalyst slurry and rejuvenating offgas.