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Patent Searching and Data


Title:
MIXING/CALCINING FURNACE
Document Type and Number:
Japanese Patent JP2011105536
Kind Code:
A
Abstract:

To provide a mixing/calcining furnace wherein CO2 gas, which is generated in a facility for producing cement, can be separated and collected at a high concentration through smooth fluidization or spouting, even in the case where the particle diameter of a heat medium is larger than the particle diameter of a cement material.

The mixing/calcining furnace is used for recovering the CO2 gas n, which is generated in the facility for producing cement, by pre-heating the cement material in a pre-heater and subsequently feeding the same to and firing the same in a cement kiln 1 wherein a high-temperature atmosphere is retained. The uncalcined cement material discharged from the pre-heater and the heat medium heated to a calcination temperature or above in a medium-heating furnace are fed to and mixed and calcined in the mixing/calcining furnace, thereby generating the CO2 gas. The mixing/calcining furnace is equipped with a feed line 20 for feeding from the top the heat medium t having a larger particle diameter than that of the cement material and a discharge line 25 for discharging the heat medium t from the bottom, thereby forming a transfer layer 26 wherein the heat medium t is transferred from the top to the bottom.


Inventors:
SHIMA HIROKAZU
HIGUCHI NAOHIRO
TAKAYAMA YOSHINORI
KOMATSU TAKUYA
WANG JUNZHU
Application Number:
JP2009000261123
Publication Date:
June 02, 2011
Filing Date:
November 16, 2009
Export Citation:
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Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
C04B7/44; B01J8/12; B01J8/24; F27D17/00
Attorney, Agent or Firm:
清水 千春