Air pollution control apparatus and air pollution control system
    1.
    发明授权
    Air pollution control apparatus and air pollution control system 有权
    空气污染控制装置及大气污染控制系统

    公开(公告)号:US08840843B2

    公开(公告)日:2014-09-23

    申请号:US13058736

    申请日:2009-08-04

    摘要: An air pollution control apparatus includes at least one denitration catalyst layer for reducing the amounts of nitrogen oxides in flue gas from a boiler and oxidizing mercury with hydrogen chloride sprayed into the flue gas. Spraying pipe headers 51 are disposed in a flue gas duct 19. The spraying pipe headers 51 are inserted into the flue gas duct 19 and arranged in a direction orthogonal to the direction of a gas flow in the flue gas duct 19. At least four spray nozzles 52-1 to 52-4 are disposed at intervals on the spraying pipe header 51 to form a vertical vortex flow 53 in the gas flow direction. A swirling diffuser plate is disposed on an opening side of the spray nozzles to form the vertical vortex flow in the gas flow direction, wherein the swirling diffuser plate has a flat shape at one side parallel to the spraying pipe header and a wavy shape corresponding to the nozzle intervals on the header at the other side. The diffusion of hydrogen chloride is thereby facilitated in a rapid manner. Therefore, the number of the nozzles can be reduced, and the uniformity of the concentration of hydrogen chloride at the location of the catalyst can be ensured even when the spacing between the nozzles is increased.

    摘要翻译: 空气污染控制装置包括至少一个用于减少来自锅炉的烟道气中的氮氧化物的数量的脱硝催化剂层,并且用喷射到烟道气中的氯化氢氧化汞。 喷管套管51设置在烟气管道19中。喷管集管51插入烟气管道19中,沿与烟气管道19中气流方向正交的方向排列。至少四喷 喷嘴52-1至52-4间隔布置在喷管集管51上,以在气流方向形成垂直涡流53。 旋转扩散板设置在喷嘴的开口侧,以在气流方向上形成垂直涡流,其中旋转扩散板在平行于喷管头的一侧具有平坦形状,并且波浪形状对应于 在另一侧的头部上的喷嘴间隔。 从而有利于快速的氯化氢扩散。 因此,可以减少喷嘴的数量,并且即使当喷嘴之间的间隔增加时也可以确保催化剂位置处的氯化氢浓度的均匀性。