Novel generation fischer-tropsch synthesis process
A Fischer-Tropsch synthesis, a new generation of technology, applied in the direction of hydrocarbon production from carbon oxides, can solve the problems of catalyst deactivation, reaction heat removal, etc., to achieve the effect of ensuring effective utilization, improving efficiency, and avoiding complexity
Inactive Publication Date: 2009-07-08
SHAANXI JIN CHAO INVESTMENT CORP
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[0019] The purpose of the present invention is to propose a new generation of Fischer-Tropsch synthesis process to solve the problems of reaction heat removal and catalyst deactivation in the existing process with a new method
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[0038] by figure 1 As shown, the three-module series process is to use the purified and qualified synthesis gas under the system pressure to pass through 1 # Reactor System - 2 # Reactor System - 3 # The reactor system carries out the F-T reaction. After each reactor system is cooled and separated, the liquid phase product paraffin, heavy component, light component and reaction water are taken out. The unreacted tail gas is sent to the next reactor, 3 # The tail gas from the reactor system (the gas component of the tail gas is CH 4 , CO 2 A small amount of H 2 , CO, N 2etc.) to the exhaust gas recovery system for reuse.
[0039] Such as figure 2 As shown, the five-module serial process flow is the same for each reactor system. When connecting to the next reactor system in series, pressure, flow, temperature, H 2 \CO will vary. The filled catalysts are different (Fe based catalyst or Co based catalyst).
[0040] Such as image 3 As shown, take a unit reactor sys...
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The invention aims to provide a new-generation Fischer-Tropsch synthesis process. A novel method is used to solve the problems of the transfer of reaction heat and the inactivation of a catalyst in the prior process. In particular, the new-generation Fischer-Tropsch synthesis process adopts a plurality of Fischer-Tropsch reactors in serial connection or in combination of serial connection and parallel connection; gas in each Fischer-Tropsch reactor is cooled and separated; and after a liquid phase product of olefin, a heavy component, a light component and reaction water are taken out, unreacted tail gas is sent to the next Fischer-Tropsch reactor. The process is based on the Fischer-Tropsch synthesis process of a fixed bed and is a process with the characteristics of modularization, easy amplification and one-way multi-product. The process no longer uses single equipment as a key technology improvement point, comprehensively considers the whole process system, provides the use of the multistage reactor to solve the problems of the transfer of the reaction heat and the inactivation of the catalyst so as to reduce the temperature and pressure of the system and realizes the optimization of the whole process.
Description
technical field [0001] The invention belongs to the technical field of chemical synthesis, in particular to the improvement of the Fischer-Tropsch synthesis technology for synthesizing hydrocarbon substances with syngas as raw material under the action of a catalyst. Background technique [0002] Fischer-Tropsch synthesis (abbreviated as F-T) is one of the indirect coal liquefaction technologies. The process of synthesizing paraffin-based liquid fuels and chemicals using synthesis gas as a raw material under catalysts (mainly iron-based) and appropriate reaction conditions. Developed by German chemists F. Fischer and H. Thoropsch in 1923, it was put into mass production during World War II. Its reaction process can be represented by the following formula: [0003] nCO+2nH2—→[—CH2—]n+nH2O [0004] The traditional Fischer-Tropsch synthesis method uses cobalt as a catalyst (see metal catalysts), and the resulting product has complex composition, poor selectivity, less light ...
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Inventor 王炜屠霖相会生胡红军赵信会郑惠林布兰登·派屈克·郝斯伯格
Owner SHAANXI JIN CHAO INVESTMENT CORP