Title:
セメントキルン抽気ガスの処理方法
Document Type and Number:
Japanese Patent JP6504224
Kind Code:
B2
Abstract:
To provide a method and a device of treating exhaust, capable of effectively decreasing the content of volatile mercury contained in exhaust from a cement production facility to reduce the running cost of a heating device that heats collected dust to evaporate mercury contained therein.SOLUTION: The method of treating cement kiln extraction gas, i.e., a method of extracting a portion of combustion exhaust from a cement kiln exhaust passage extending from the tail of a cement kiln to the lowest stage of a calcination furnace to recover dust present in the extraction gas to discharge it to the outside of the cement kiln, comprises a step of branching a portion of extraction gas prior to introducing the extracted gas into a classifier, a step of allowing the branched extraction gas to bypass a classifying cyclone into which un-branched extraction gas is introduced for separating fine powder and coarse powder, and to merge with the gas containing fine powder dust discharged from the classifying cyclone, a step of cooling the merged gas by a heat exchanger, and a step of recovering fine powder dust using a bag filter.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
Masayoshi Konishi
Yuji Izumimoto
Shunichi Ito
Fukuyama Shingo
Yuji Izumimoto
Shunichi Ito
Fukuyama Shingo
Application Number:
JP2017191105A
Publication Date:
April 24, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
Sumitomo Osaka Cement Co., Ltd.
International Classes:
C04B7/60; B01D53/50; B01D53/68; B01D53/83; B07B7/08; F27D17/00
Domestic Patent References:
| JP2013180941A | ||||
| JP2000146458A | ||||
| JP2010116298A | ||||
| JP2000264687A | ||||
| JP201623108A |
Attorney, Agent or Firm:
Tamura
Junko Sugimura
Fujimatsu Masao
Junko Sugimura
Fujimatsu Masao