Patent ID: 9139779
Filing Date: 2015-09-22
Classification: B01J,C10G

Abstract:
1. A catalyst separation system for separating catalyst particles from liquid hydrocarbons synthesized by a Fischer-Tropsch synthesis reaction of a synthesis gas including a hydrogen and a carbon monoxide as the main components, and a slurry having solid catalyst particles suspended in a liquid, the catalyst separation system comprising: a reactor; a storage tank for storing the slurry drawn from the reactor; a first filtering device which is equipped with a vessel body and a first filter positioned at the bottom of the inside of the vessel body, and is configured to filter the slurry supplied to the vessel body from the storage tank in the vessel body; a first pipeline provided between the storage tank and the vessel body of the first filtering device for feeding the slurry from the storage tank to the vessel body, one end of the first pipeline being connected to the upper section of the vessel body; a second filtering device which is equipped with a second filter of which the mesh size is smaller than that of the first filter, and is configured to filter a filtrate supplied to the second filtering device from the first filtering device; a second pipeline provided between the vessel body of the first filtering device and a vessel body of the second filtering device for feeding the filtrate filtered by the first filter from the first filtering device to the second filtering device, one end of the second pipeline being connected to the lower section of the vessel body of the first filtering device and the other end being connected to the lower section of the vessel body of the second filtering device; a filtrate recovery vessel for recovering the filtrate which has passed through the first and second filtering devices; a third pipeline provided between the vessel body of the second filtering device and the filtrate recovery vessel for feeding the filtrate filtered by the first and second filtering devices from the second filtering device to the filtrate recovery vessel, one end of the third pipeline being connected to the upper section of the vessel body of the second filtering device; a first nitrogen supply line which is connected to the storage tank and is configured to supply nitrogen gas to the vessel body of the first filtering device via the storage tank so as to press the slurry against the first filter; and an agitating device configured to perform agitation of the slurry in the vessel body when the slurry is pressed by the nitrogen gas; wherein the pore diameter of the first filter of the first filtering device is 31 to 63 μm; and the pore diameter of the second filter of the second filtering device is 10 μm or less.