FIELD: chemistry.
SUBSTANCE: invention relates to a reaction system with a bubble column type suspended layer in a Fischer-Tropsch synthesis reaction system for synthesis of liquid hydrocarbons by bringing synthetic gas consisting of hydrogen and carbon oxide into contact with catalyst particles, involving the following: (1) a Fischer-Tropsch synthesis reaction in a bubble column with a suspended layer, in which synthetic gas continuously supplied from the bottom of the reactor and suspended catalyst particles are brought into contact to obtain liquid hydrocarbons, gaseous hydrocarbons and water, (2) a process where the suspension of suspended liquid products formed during Fischer-Tropsch synthesis and catalyst particles move from the reactor to the bottom part of the container for separation through a moving pipe inclined downward for separating catalyst particles and liquid products, (3) a process where gaseous products formed during Fischer-Tropsch synthesis are directed to the top part of the container for separation through a connecting pipe fitted on top of the moving pipe which is inclined downwards, and comes out of from the top, (4) a process where liquid products are extracted from the container for separation, and (5) a process where the suspension in which catalyst particles are concentrated is extracted from the bottom of the container for separation and circulated to the bottom of the reactor, moved by the moving force (gaslift) of the synthetic gas fed from the bottom of the reactor, and rises upwards through the reactor with the suspended layer without using an external source of moving force for circulation, and the formed liquid hydrocarbon products, gaseous hydrocarbon products and water are separated and extracted without using an external source of moving force for separation, where in the container for separation, which is connected to the reactor by the moving pipe inclined downwards and has a line for circulating the suspension which circulates the suspension with the concentrated catalyst in form of particles into the reactor, the speed of the rising liquid inside the container for separating is controlled so that it is 0.4 or less of the rate of sedimentation of the catalyst in form of particles with particle diametre of 20 mcm using a control valve for outlet of the suspension with the concentrated catalyst, fitted on the line for circulating the suspension between the container for separation and the reactor, a control valve for outlet of liquid reaction products coming from the container for separation, and a differential pressure valve in the upper space of the gas phase between the container for separation and the reactor, where concentration of the catalyst ranges from 10 to 40 wt % and speed of movement of the suspension ranges from 0.4 to 1.6 m/s. The invention also relates to a Fischer-Tropsch synthesis installation.
EFFECT: use of the invention simplifies the operating system used for synthesis of liquid hydrocarbons through Fischer-Tropsch synthesis.
11 cl, 2 ex, 1 tbl, 1 dwg
