NOVELTY - Sulfuric acid urea reactor, where the reactor is a granulator, comprises an inlet end (1), a guide section (2), a mixing section (3), fixed bed reaction section (4), spraying pipe (5) and atomizing nozzle. The inlet end is located in flow guide section of end side, concentrated sulfuric acid inlet end of the pipeline and reactor is connected with concentrated sulfuric acid inlet (7). The sidewall of upper part end is fixed bed reaction section is a chamber. The chamber has pore plate I and pore plate II to form a filler layer which is connected with feeding port (10).    USE - As a reactor for producing sulfuric acid urea which is used as a fertilizer (claimed).    ADVANTAGE - The reactor is simple in structure, is less in volume, is light in weight, is convenient to install and disassemble, is clean and has well maintenance, has high yield grain intensity; is environment friendly, and energy-saving.    DETAILED DESCRIPTION - Sulfuric acid urea reactor, where the reactor is a granulator, comprises an inlet end (1), a guide section (2), a mixing section (3), fixed bed reaction section (4), spraying pipe (5) and atomizing nozzle and the five parts are arranged in turn and are fixed by a flange connected with the urea solution inlet end of the urea solution pipeline and the reactor, the urea solution inlet end is located in the flow guide section of the end side, concentrated sulfuric acid inlet end of the concentrated sulfuric acid solution pipeline and the reactor is connected with the concentrated sulfuric acid inlet (7) is located in the flow guide section; the sidewall of the upper part end is fixed bed reaction section is a chamber, the chamber is pore plate I and the pore plate II to form a filler layer, a filling layer is connected with the feeding port (10), the hole plate I and the pore plate II are uniformly distributed with several through holes.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of sulfuric acid urea reactor.    Inlet end (1)    Guide section (2)    Mixing section (3)    Fixed bed reaction section (4)    Spraying pipe (5)    Concentrated sulfuric acid inlet (7)    Feeding port (10)