Method for reduction of organic chlorinated compound in cement manufacture plant, and cement manufacture plant

A technology for production equipment and compounds, applied in the direction of solid waste removal, etc., can solve problems such as banning PCB manufacturing

Active Publication Date: 2008-06-04
MITSUBISHI UBE CEMENT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the manufacture, distribution and new applications of PCBs were legally prohibited in 1974 due to the presence of coplanar PCBs, which are as toxic as dioxin

Method used

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  • Method for reduction of organic chlorinated compound in cement manufacture plant, and cement manufacture plant
  • Method for reduction of organic chlorinated compound in cement manufacture plant, and cement manufacture plant
  • Method for reduction of organic chlorinated compound in cement manufacture plant, and cement manufacture plant

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Embodiment Construction

[0097] The best way to practice the invention

[0098] Referring to FIG. 1 and FIG. 2 , the method for reducing organic chlorine compounds in cement production equipment and the first embodiment of the cement production equipment of the present invention will be described.

[0099] As shown in FIG. 1 , a cement production facility 10A of the present embodiment includes a raw material step part 1 for pulverizing cement raw materials and a calcining step part 2 for calcining the pulverized cement raw materials.

[0100] The raw material processing unit 1 includes a raw material storage 11 , a raw material dryer 12 , a raw material mill 13 , a storage silo 14 , and an electric dust collector (dust collector) 30 . The raw material storage 11 respectively stores limestone, clay, silica, and iron raw materials as cement raw materials. The raw material dryer 12 heats and dries the cement raw material with a large water content. The raw material mill 13 grinds the cement raw materia...

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Abstract

Disclosed is a method for reducing an organic chlorinated compound in a cement manufacture plant, which can reduce the quantity of the organic chlorinated compound contained in a powder in the cement manufacture plant. The method comprises: a heating step in which the powder is heated to separate the organic chlorinated compound from the powder or decompose the organic chlorinated compound; and a gas thermal degradation step in which a thermal treatment gas which is produced as a result of the heating of the powder and contains the organic chlorinated compound is fed to a high temperature chamber in the cement manufacture plant to thermally decompose the organic chlorinated compound contained in the thermal treatment gas.

Description

technical field [0001] The present invention relates to a method for reducing organic chlorine compounds in cement production equipment, and cement production equipment, and more specifically, relates to heat treatment of organic chlorine compounds such as dioxins and PCBs discharged from cement production equipment, which can reduce the discharge amount Technology. [0002] This application is based on Japanese Patent Application No. 2005-177019 filed on June 16, 2005, Japanese Patent Application No. 2005-205064 filed on July 14, 2005, and Japanese Patent Application No. 2005-213442 filed on July 22, 2005 Priority is claimed, and the contents thereof are incorporated in this specification. Background technique [0003] Dioxin (PCDD) is the abbreviation of polychlorinated dibenzo-p-dioxin, which is a kind of organic chlorine compound. Polychlorinated dibenzofurans (PCDFs) similar to the dioxins are known. [0004] In particular, 2,3,7,8-tetrachlorides of tetrachlorodibenz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/38B09B3/00C04B7/60
Inventor 市原克彦小池荣次大越宗矩田中久顺江波户一郎水谷公俊
Owner MITSUBISHI UBE CEMENT CORP
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