DENITRATION AGENT AND WASTE GAS TREATMENT METHOD AND SYSTEM
PROBLEM TO BE SOLVED: To provide a denitration agent comprising a urea-containing matter and used for removing nitrogen oxides from a waste gas produced from e.g., a cement clinker production apparatus, which denitration agent can be prepared without using a water resource such as industrial water....
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| creator | IZUMI KAZUSHI TAKANO HIROYUKI MURAOKA YOSHIMASA FUNAKOSHI YASUHIRO |
| description | PROBLEM TO BE SOLVED: To provide a denitration agent comprising a urea-containing matter and used for removing nitrogen oxides from a waste gas produced from e.g., a cement clinker production apparatus, which denitration agent can be prepared without using a water resource such as industrial water. SOLUTION: The denitration agent is prepared by mixing a waste liquid with urea. The waste gas treatment system using the denitration agent includes a denitration agent preparation apparatus 1 for preparing the denitration agent by mixing a waste liquid with urea, a storage tank 2 for storing the denitration agent obtained in the denitration agent preparation apparatus 1, and a cement clinker production apparatus (including a rotary kiln 5 and a preheater 6) for allowing the denitration agent fed from the storage tank 2 to effect denitration. The position through which the denitration agent is fed is a 800°C or higher region (e.g., kiln tail) of the rotary kiln 5 when no catalyst is used. COPYRIGHT: (C)2009,JPO&INPIT |
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SOLUTION: The denitration agent is prepared by mixing a waste liquid with urea. The waste gas treatment system using the denitration agent includes a denitration agent preparation apparatus 1 for preparing the denitration agent by mixing a waste liquid with urea, a storage tank 2 for storing the denitration agent obtained in the denitration agent preparation apparatus 1, and a cement clinker production apparatus (including a rotary kiln 5 and a preheater 6) for allowing the denitration agent fed from the storage tank 2 to effect denitration. The position through which the denitration agent is fed is a 800°C or higher region (e.g., kiln tail) of the rotary kiln 5 when no catalyst is used. 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SOLUTION: The denitration agent is prepared by mixing a waste liquid with urea. The waste gas treatment system using the denitration agent includes a denitration agent preparation apparatus 1 for preparing the denitration agent by mixing a waste liquid with urea, a storage tank 2 for storing the denitration agent obtained in the denitration agent preparation apparatus 1, and a cement clinker production apparatus (including a rotary kiln 5 and a preheater 6) for allowing the denitration agent fed from the storage tank 2 to effect denitration. The position through which the denitration agent is fed is a 800°C or higher region (e.g., kiln tail) of the rotary kiln 5 when no catalyst is used. 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SOLUTION: The denitration agent is prepared by mixing a waste liquid with urea. The waste gas treatment system using the denitration agent includes a denitration agent preparation apparatus 1 for preparing the denitration agent by mixing a waste liquid with urea, a storage tank 2 for storing the denitration agent obtained in the denitration agent preparation apparatus 1, and a cement clinker production apparatus (including a rotary kiln 5 and a preheater 6) for allowing the denitration agent fed from the storage tank 2 to effect denitration. The position through which the denitration agent is fed is a 800°C or higher region (e.g., kiln tail) of the rotary kiln 5 when no catalyst is used. COPYRIGHT: (C)2009,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG TRANSPORTING TREATMENT OF NATURAL STONE |
| title | DENITRATION AGENT AND WASTE GAS TREATMENT METHOD AND SYSTEM |
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