The utility model discloses a concentrated
sulfuric acid distributor for preparing
chlorine dioxide, which comprises an outer
tantalum tube, an inner
tantalum tube and a spray head, two ends of the outer
tantalum tube are respectively provided with an outer tantalum tube
flange, one end of the inner tantalum tube is arranged on the outer side of the outer tantalum tube, the other end of the inner tantalum tube is arranged on the inner side of the outer tantalum tube, and an inner tantalum tube
flange is arranged at one end of the inner tantalum tube. The
nozzle is arranged in the outer tantalum tube and is coaxial with the outer tantalum tube, the
nozzle comprises a first cone and a second cone which are coaxially arranged, a sealing plate is arranged on the top surface of the second cone, the second cone is fixedly connected with the inner wall of the outer tantalum tube through a plurality of rib plates, and a plurality of small holes are uniformly distributed in the surface of the second cone between two adjacent rib plates. According to the utility model, the flow velocity of reaction liquid can be effectively utilized, so that a concentrated
sulfuric acid solution is uniformly distributed, the condition that
chlorine dioxide is decomposed due to overhigh local acidity is avoided, and the
chlorine dioxide yield of the device is further improved.