Disclosed is a fuel processor. The fuel processor includes: a steam reformer unit configured to be disposed at an upper portion in a casing; a heat exchanger unit configured to be disposed at a lower portion of the steam reformer unit; a high temperature shift reforming unit configured to be disposed at a lower portion of the heat exchanger unit; a low temperature shift reforming unit configured to be disposed while enclosing an outer portion of the high temperature shift reforming unit; and a heat exchange chamber configured to be disposed at a lower portion of the high temperature shift reforming unit and exchange heat between reformed gas and a heat exchange fluid supplied through a channel part formed to drain the reformed gas and combustion gas and supply the heat exchange fluid.

Multi-reactor systems with aromatization reactor vessels containing a catalyst with low surface area and pore volume, followed in series by aromatization reactor vessels containing a catalyst with high surface area and pore volume, are disclosed. Related reforming methods using the different aromatization catalysts also are described.

Multi-reactor systems with aromatization reactor vessels containing a catalyst with low surface area and pore volume, followed in series by aromatization reactor vessels containing a catalyst with high surface area and pore volume, are disclosed. Related reforming methods using the different aromatization catalysts also are described.

The invention relates to a reactor for performing exothermic equilibrium reactions, especially for producing methanol from synthesis gas in a multistage synthesis with intermediate condensation of the reaction product. The reactor according to the invention has a reactor shell and a multitude of series-connected and mutually fluid-connected reactor cells disposed within the reactor shell, where each of the reactor cells includes a reaction apparatus, a cooling-down apparatus and a phase separation apparatus as reactor cell elements. The reactor has a multitude of reactor planes disposed in a mutually parallel arrangement within the reactor shell, where reactor cell elements of the same kind are disposed in the same reactor plane. The inventive arrangement of the reactor cell elements enables the building of a compact reactor and reduces material stresses within the reactor by the avoidance of large temperature differences within the reactor shell.

Multi-reactor systems with aromatization reactor vessels containing a catalyst with low surface area and pore volume, followed in series by aromatization reactor vessels containing a catalyst with high surface area and pore volume, are disclosed. Related reforming methods using the different aromatization catalysts also are described.

Multi-reactor systems with aromatization reactor vessels containing a catalyst with low surface area and pore volume, followed in series by aromatization reactor vessels containing a catalyst with high surface area and pore volume, are disclosed. Related reforming methods using the different aromatization catalysts also are described.

An isothermal carbon monoxide (CO) shift reactor having high CO conversion and the process technology comprises the outside pressure vessel; the catalyst unit; upper and lower tube sheets welded with water tubes and bottom tee joints; the said outside pressure vessel has seal heads at the upper and lower ends; the said vessel has a water chamber and a steam chamber at the upper section. The catalyst unit comprises the upper catalyst bed with water tubes. There is a central pipe that is located in the said vessel, of which the upper end is located in the upper catalyst bed while the lower end is located in the lower catalyst bed; the said bottom tee joint has an inlet for feed gas, outlet for reacted shift gas and inlet for steam-water mixture; the said central pipe is installed with spray nozzle for steam-water mixture; the said reactor is applicable for process technologies for feed and effluent gas having different CO contents. Low temperature, high CO feed content, high shift conversion and low system pressure drop are direct results of this disclosure.