发明名称 |
Heat-treated active carbons for use in denitration, processes for producing same, denitration method using same, and denitration system using same |
摘要 |
This invention relates to a technique for removing nitrogen oxides (NOx) present in exhaust gases discharged from boilers and the like. When the temperature of the exhaust gas is 100° C. or below, a heat-treated active carbon produced by heat-treating a raw active carbon at 600 to 1,200° C. in a non-oxidizing atmosphere so as to remove oxygen-containing functional groups present at the surfaces thereof and thereby reduce the atomic surface oxygen/surface carbon ratio to 0.05 or less is preferably used. When the temperature of the exhaust gas exceeds 100° C., a heat-treated active carbon produced by heat-treating a raw active carbon at 600. to 1,200° C. in a non-oxidizing atmosphere and activating the surfaces thereof with sulfuric acid or nitric acid to impart oxidizing oxygen-containing functional groups thereto is preferably used.
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申请公布号 |
US7465429(B2) |
申请公布日期 |
2008.12.16 |
申请号 |
US20020081208 |
申请日期 |
2002.02.25 |
申请人 |
OSAKA GAS COMPANY LIMITED;MITSUBISHI JUKOGYO KABUSHIKI KAISHA |
发明人 |
MOCHIDA ISAO;YASUTAKE AKINORI;SETOGUCHI TOSHIHIKO;KOBAYASHI NORIHISA;KASUH TAKAHIRO;YOSHIKAWA MASAAKI |
分类号 |
B01J8/02;B01D53/86;B01J21/18 |
主分类号 |
B01J8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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