Patent ID: 8679414
Filing Date: 2014-03-25
Classification: B01D

Abstract:
1. A desulfurization-denitration apparatus for exhaust gas, comprising: a desulfurization-denitration tower body; an adsorbent discharging device; an entrance louver and an exit louver within said tower body for delimiting a passage area of a packed moving bed of an adsorbent that moves in a vertical direction within said tower body; and a two stage throttle portion coupled to a bottom of the tower body for providing a path for adsorbent falling through the tower body to exit to the adsorbent discharging device, the two stage throttle portion including a first stage extending from the bottom of the tower body toward the adsorbent discharging device and a second stage extending from a bottom of the first stage toward the adsorbent discharging device, the first stage having opposing inclined first and second walls and having opposing third and fourth walls, said first, second, third and fourth walls defining a perimeter of the first stage and extending vertically downward from a common height at the bottom of the tower body; and wherein internal volume of all structure of the first stage within the perimeter consists of a plurality of first partitions and a second partition, said adsorbent falling through said internal volume; wherein each first partition of the plurality of first partitions extends between said third wall and said fourth wall without contacting any of said first wall, second wall, tower body, and louvers, wherein said each first partition is spaced apart and extends vertically downward from said common height toward said second stage at a different vertical incline from all other of said plurality of first partitions; wherein the second partition defines a single plane and extends vertically downward from said common height starting at a lower end of the exit louver; and wherein said single plane is parallel to one wall of said inclined first wall and inclined second wall and is spaced apart from and between each of said one wall and a nearest one of the plurality of first partitions closest to said one wall so that a spacing between said second partition and said one wall is constant along a vertical span of said second partition.