METHOD OF PRODUCING LIQUID HYDROCARBONS FROM A SYNGAS

A method of producing liquid hydrocarbons from a syngas, the method comprising: providing a hydrogen-cyanide-containing syngas; dividing the hydrogen-cyanide-containing syngas into a first syngas portion and a second syngas portion; passing a mixture of the first syngas portion and steam through a water-gas-shift reaction chamber to provide a hydrogen- enriched first syngas portion; combining the hydrogen-enriched first syngas portion with the second syngas portion to provide a combined syngas; passing the combined syngas through a first hydrolysis reaction chamber to convert at least a portion of the hydrogen cyanide in the combined syngas to ammonia to provide a first ammonia-enriched, hydrogen-cyanide- depleted syngas; passing the first ammonia-enriched, hydrogen-cyanide-depleted syngas to a first scrubber and contacting the first ammonia-enriched, hydrogen-cyanide-depleted syngas with a first scrubbing liquid, whereby at least a portion of the ammonia contained in the first ammonia-enriched, hydrogen-cyanide-depleted syngas is retained in the first scrubbing liquid to form a first ammonia-depleted, hydrogen-cyanide-depleted syngas; passing the first ammonia-depleted, hydrogen-cyanide-depleted syngas through a carbon-dioxide-removal unit to form a carbon-dioxide-depleted syngas; passing the carbon-dioxide-depleted syngas to a second hydrolysis reaction chamber to convert at least a portion of the hydrogen cyanide in the carbon-dioxide-depleted syngas to ammonia to provide a second ammonia-enriched, hydrogen-cyanide-depleted syngas; passing the second ammonia-enriched, hydrogen- cyanide-depleted syngas to a second scrubber and contacting the second ammonia-enriched, hydrogen-cyanide-depleted syngas with a second scrubbing liquid, whereby at least a portion of ammonia contained in the second ammonia-enriched, hydrogen-cyanide-depleted syngas is retained in the second scrubbing liquid to form a second ammonia-depleted, hydrogen- cyanide-depleted syngas; and passing the second ammonia-depleted, hydrogen-cyanide- depleted syngas through a Fischer-Tropsch reaction chamber to produce a liquid hydrocarbon product. La présente invention concerne un procédé de production d'hydrocarbures liquides à partir d'un gaz de synthèse, le procédé comprenant les étapes consistant à : fournir un gaz de synthèse contenant du cyanure d'hydrogène ; diviser le gaz de synthèse contenant du cyanure d'hydrogène en une première partie de gaz de synthèse et une seconde partie de gaz