Fischer-Tropsch synthetic exhaust gas comprehensive utilization method with low carbon emission

摘要

PROBLEM TO BE SOLVED: To disclose a comprehensive utilization method of Fischer-Tropsch synthetic exhaust gas with low carbon emission. SOLUTION: The non-circulated exhaust gas after the Fischer-Tropsch synthesis reaction is recovered by converting it into a synthesis gas rich in hydrogen via steam reforming conversion, and separating and extracting high-purity hydrogen from the synthesis gas rich in hydrogen. . The method comprises 1) obtaining a shift gas by a steam conversion reaction, 2) obtaining a hydrocarbon fuel by a Fischer-Tropsch synthesis reaction, and 3) carbonization containing 2 or more carbon atoms after the pre-reforming reaction. Converting hydrogen composition into methane, 4) converting methane and water vapor into hydrogen and carbon monoxide by a reforming reaction, 5) separating gas containing hydrogen and carbon monoxide, and 6). Supplying heat to the reforming reactor. In the present invention, a Fischer-Tropsch synthetic exhaust gas, particularly an exhaust gas containing a large amount of inert components, is effectively used, and the exhaust gas is converted to hydrogen and used. Moreover, in this invention, since the residual combustible component of the reformed gas after hydrogen separation is used effectively, energy utilization efficiency improves. [Selection] Figure 2