A FISCHER-TROPSCH SYNTHESIS PROCESS AND SYSTEM

摘要

The present invention relates to a Fischer-Tropsch synthesis process and system. The process comprises: a) introducing a feed gas containing CO and H2 into the first stage of a Fischer-Tropsch synthesis reactor for carrying out the Fischer-Tropsch synthesis, so as to obtain the first stage reaction products of the Fischer-Tropsch synthesis; b) separating the first stage reaction products of the Fischer-Tropsch synthesis, so as to separate water from unconverted tail gas and to obtain hydrocarbon products and the unconverted tail gas from the first stage of the Fischer-Tropsch synthesis reaction; c) introducing the unconverted tail gas obtained in step b) into the second stage of the Fischer-Tropsch synthesis reactor for carrying out the Fischer-Tropsch synthesis, so as to obtain the second stage reaction products of the Fischer-Tropsch synthesis; and d) separating the second stage reaction products of the Fischer-Tropsch synthesis, so as to separate water from unconverted tail gas and to obtain hydrocarbon products and the second stage unconverted tail gas of the Fischer-Tropsch synthesis reaction, with a portion of the second stage unconverted tail gas of the Fischer-Tropsch synthesis reaction being recycled to the second stage of the Fischer-Tropsch synthesis reactor for recirculated reaction therein. The process and system of the present invention have a simplified processing flow and are suitable for large scale industrialized production.