Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
A processing unit and a disposal method of cement kiln flue gas
Document Type and Number:
Japanese Patent JP6061285
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To treat the exhaust gas of a chlorine bypass system without using a large amount of water.SOLUTION: An apparatus 1 for treating a cement kiln combustion exhaust gas includes a probe 3 which extracts a part G of combustion exhaust gas while cooling it from a kiln exhaust gas passage ranging from the kiln bottom of a cement kiln 2 to a lowest step cyclone of a preheater, a heat reclaimer 6 which makes extraction gas G2 subjected to heat exchange and temperature decrease, a spray tower 7 which sprays extraction gas G3 with water, allows slaked lime produced from quick lime in extraction gas and water react with SOin the extraction gas, and removes SOin the extraction gas, and a dust collector 8 which recovers dust D2 contained in the exhaust gas G4 of the spray tower. The apparatus may includes a thickener 9 which separates slurry containing the dust recovered by the dust collector into slaked lime slurry S produced from quick lime contained in the dust, gypsum G, and salt water SW, wherein the slaked lime slurry separated by the thickener is sprayed on the extraction gas by the probe in the spray tower.

Inventors:
Yousuke Ogawa
Yasuyuki Ishida
Application Number:
JP2012073076A
Publication Date:
January 18, 2017
Filing Date:
March 28, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
B01D53/18; B01D53/50; C04B7/60; F27D17/00
Domestic Patent References:
JP2004073976A
JP58051924A
JP2007130565A
JP2013531558A
JP11005014A
JP2011144058A
JP2012056794A
Foreign References:
WO2012003423A1
WO2011152548A1
Attorney, Agent or Firm:
Jun Nakai