Process for gas-absorption and dust-removal
AssigneesSumitomo Metal Industries, Ltd., Fuji Kasui Engineering Co., Ltd.
InventorsHisashi Uchiyama, Naohiko Meno, Teizo Senjo, Makio Kobayashi
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Abstract
A process for gas-absorption and dust-removal with an excellently high rate and capacity is provided wherein gas containing a specific gas component to be absorbed and/or fine dust to be removed is passed upwardly through a perforated plate or grid plate tower without weir and downcomer having a free-space ratio of 0.25 - 0.60, where said gas is contacted countercurrently with liquid absorbent under the stated conditions.
Claims3
A process for removing a specific gas component and/or fine dust particles from a gas which comprises passing said gas containing the specific gas component and/or find dust particles upwardly through a plate tower comprising at least one perforated or grid plate without weir and downcomer, said plate having a free-space rate. (Fc) in the range from 0.25 to 0.60 and passing said gas through the tower at a superficial gas velocity within a range from 3 to 5.8 m/sec, and simultaneously passing a liquid absorbent downwardly through said plate tower at a liquid flow rate of not less than about 9300 kg/m.sup.2. hr, said liquid flow rate increasing as the free space ratio increases to not less than about 17,100 kg/m.sup.2. hr at a free space ratio of 0.60, wherein the liquid flows in a counter current flow relationship to the upflowing gas, the liquid to gas ratio (L/G) being in the range from 0.5 to 25.
Dependencies are inferred from the claim text.