B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/33, 183/40,
B01D 53/06 (2006.01) B01D 46/02 (2006.01) B03C 3/04 (2006.01)
Patent
CA 2036746
ABSTRACT OF THE INVENTION An apparatus and method for removing mercury from flue gases produced by power generation or waste incineration. Mercury is removed from the hot waste gases, in a first embodiment, by distributing carbon and sulfur into the hot waste gas stream and then subsequently separating the mercury adsorbed or adsorbed by the carbon and sulfur particles downstream in the spray dryer absorber and baghouse filter. In a second embodiment, elemental sulfur, in particulate form, is sprayed directly into the flue gas stream. Other absorbents/adsorbents are discussed including diatomaceous earth, silica gel, activated aluminum oxide, aluminum or re-hydrate, zeolite or boiler fly ash. An apparatus is disclosed for conveying the absorbent/adsorbent by means of a screw conveyor having a plurality of spiral slots in-the screw conveyor housing. As a result, the conveyed adsorbent/absorbent is equally divided to flow through a plurality of distributor pipes connected to the flue gas passages. The distributor pipes are arranged to be respectively aligned below each of the spiral slots. Flow can be adjusted by axially sliding sleeves located adjacent each of the slots to partially or fully cover a respective slot.
Kubin Peter Z.
von Dem Fange Henry P.
Kent & Edgar
Kubin Peter Z.
Ogden Martin Systems Inc.
von Dem Fange Henry P.
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