초록 ▼

Natural gas or other methane-containing feed gas is converted to a C.sub.5 -C.sub.19 hydrocarbon liquid in an integrated system comprising an oxygenative synthesis gas generator, a non-oxygenative synthesis gas generator, and a hydrocarbon synthesis process such as the Fischer-Tropsch process. The o

Natural gas or other methane-containing feed gas is converted to a C.sub.5 -C.sub.19 hydrocarbon liquid in an integrated system comprising an oxygenative synthesis gas generator, a non-oxygenative synthesis gas generator, and a hydrocarbon synthesis process such as the Fischer-Tropsch process. The oxygenative synthesis gas generator is a mixed conducting membrane reactor system and the non-oxygenative synthesis gas generator is preferably a heat exchange reformer wherein heat is provided by hot synthesis gas product from the mixed conducting membrane reactor system. Offgas and water from the Fischer-Tropsch process can be recycled to the synthesis gas generation system individually or in combination.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a hydrocarbon product which comprises:(a) providing a mixed conducting membrane reaction zone having an oxidant side and a reactant side which are separated by a solid mixed conducting membrane;(b) introducing a feed gas comprising at least methane int

[ What is claimed is:] [1.] A method for making a hydrocarbon product which comprises:(a) providing a mixed conducting membrane reaction zone having an oxidant side and a reactant side which are separated by a solid mixed conducting membrane;(b) introducing a feed gas comprising at least methane into the reactant side of the mixed conducting membrane reaction zone;(c) heating an oxygen-containing oxidant gas feed and introducing the resulting heated oxidant gas feed into the oxidant side of the mixed conducting membrane reaction zone;(d) permeating oxygen from the oxidant side of the mixed conducting membrane reaction zone through the mixed conducting membrane to the reactant side of the mixed conducting membrane reactor and reacting the oxygen with the feed gas to form at least hydrogen and carbon monoxide;(e) withdrawing a hot synthesis gas product comprising at least hydrogen and carbon monoxide from the reactant side of the mixed conducting membrane reaction zone;(f) withdrawing a hot oxygen-depleted nonpermeate gas from the oxidant side of the mixed conducting membrane reaction zone;(g) providing a hydrocarbon synthesis and processing zone and reacting at least a portion of the synthesis gas product therein;(h) withdrawing from the hydrocarbon synthesis and processing zone streams comprising (1) a hydrocarbon product comprising components having greater than four carbon atoms, (2) an offgas comprising one or more components selected from the group consisting of hydrogen, carbon monoxide, carbon dioxide, methane, and hydrocarbons containing two or more carbon atoms, and (3) water; and(i) converting at least a portion of the offgas into a recycle gas and utilizing at least a portion of this recycle gas to provide a portion of the feed gas to the mixed conducting membrane reaction zone.