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    METHOD OF REDUCING NITROGEN OXIDES FROM COKE-OVEN FLUE GAS
    6.
    发明申请
    METHOD OF REDUCING NITROGEN OXIDES FROM COKE-OVEN FLUE GAS 有权
    从焦炭烟气中减少氮氧化物的方法

    公开(公告)号：US20120261244A1

    公开(公告)日：2012-10-18

    申请号：US13503280

    申请日：2010-10-26

    申请人： Joerg Brix ,  Friedrich Huhn ,  Frank Krebber

    发明人： Joerg Brix ,  Friedrich Huhn ,  Frank Krebber

    IPC分类号： B01D53/56 ,  B01D53/86 ,  C10B21/10 ,  C10B43/10

    CPC分类号： B01D53/56 ,  B01D53/8631 ,  B01D2251/2062 ,  C10B5/02 ,  C10B21/10 ,  C10B43/10 ,  Y02C20/10 ,  Y02P20/129

    摘要： The invention relates to a method for reducing nitrogen oxides from the exhaust gas of a coke oven, which has a plurality of coking chambers and heating walls, arranged between the coking chambers, with heating flues (12, 12′) for the indirect heating of the coking chambers. A combustible gas (16), which consists entirely or partially of coke oven gas, is burned in the heating flues (12, 12′), thereby producing an exhaust gas which contains nitrogen oxides. A reducing agent is fed to the exhaust gas at a temperature between 700° C. and 1100° C. and the proportion of nitrogen oxide in the exhaust gas is reduced by a homogeneous gas reaction between the reducing agent and the nitrogen oxides. The exhaust gas is subsequently passed through a regenerator (4) for heat recovery. Furthermore, carbon deposits on hot parts of the combustible gas feed are burned with decarbonizing air, wherein, during a regenerator half-period in which the combustible gas feed to one heating flue (12′) is stopped, the decarbonizing air is introduced into this heating flue (12′) through the associated burner supply line and combustible gas nozzle (15′) and is discharged from another heating flue (12) with the hot exhaust gas. According to the invention, metered amounts of the reducing agent are fed into the decarbonizing air and, together with it, brought into contact with the hot exhaust gas.

    摘要翻译： 本发明涉及一种用于从焦化炉废气中还原氮氧化物的方法，该方法具有设置在焦化室之间的多个焦化室和加热壁，其具有用于间接加热的加热烟道（12,12'） 焦化室。 完全或部分由焦炉气体组成的可燃气体（16）在加热烟道（12,12'）中燃烧，从而产生含有氮氧化物的废气。 在700℃〜1100℃的温度下将还原剂供给到排气中，通过还原剂和氮氧化物之间的均匀气体反应来减少废气中的氮氧化物的比例。 废气随后通过再生器（4）进行热回收。 此外，可燃气体进料的热部分上的碳沉积物用脱碳空气燃烧，其中在停止向一个加热烟道（12'）供给可燃气体的再生器半周期期间，将脱碳空气引入该 加热烟道（12'）通过相关联的燃烧器供应管线和可燃气体喷嘴（15'），并且从另一加热烟道（12）排出热废气。 根据本发明，将计量量的还原剂进料到脱碳空气中并与其一起与热废气接触。

    Method of reducing nitrogen oxides from coke-oven flue gas
    8.
    发明授权
    Method of reducing nitrogen oxides from coke-oven flue gas 有权
    从焦炉烟气中还原氮氧化物的方法

    公开(公告)号：US09278310B2

    公开(公告)日：2016-03-08

    申请号：US13503280

    申请日：2010-10-26

    申请人： Joerg Brix ,  Friedrich Huhn ,  Frank Krebber

    发明人： Joerg Brix ,  Friedrich Huhn ,  Frank Krebber

    IPC分类号： B01D53/56 ,  C10B43/10 ,  C10B5/02 ,  B01D53/86 ,  C10B21/10

    CPC分类号： B01D53/56 ,  B01D53/8631 ,  B01D2251/2062 ,  C10B5/02 ,  C10B21/10 ,  C10B43/10 ,  Y02C20/10 ,  Y02P20/129

    摘要： The invention relates to a method for reducing nitrogen oxides from the exhaust gas of a coke oven, which has a plurality of coking chambers and heating walls, arranged between the coking chambers, with heating flues (12, 12′) for the indirect heating of the coking chambers. A combustible gas (16), which consists entirely or partially of coke oven gas, is burned in the heating flues (12, 12′), thereby producing an exhaust gas which contains nitrogen oxides. A reducing agent is fed to the exhaust gas at a temperature between 700° C. and 1100° C. and the proportion of nitrogen oxide in the exhaust gas is reduced by a homogeneous gas reaction between the reducing agent and the nitrogen oxides. The exhaust gas is subsequently passed through a regenerator (4) for heat recovery. Furthermore, carbon deposits on hot parts of the combustible gas feed are burned with decarbonizing air, wherein, during a regenerator half-period in which the combustible gas feed to one heating flue (12′) is stopped, the decarbonizing air is introduced into this heating flue (12′) through the associated burner supply line and combustible gas nozzle (15′) and is discharged from another heating flue (12) with the hot exhaust gas. According to the invention, metered amounts of the reducing agent are fed into the decarbonizing air and, together with it, brought into contact with the hot exhaust gas.

    摘要翻译： 本发明涉及一种用于从焦化炉废气中还原氮氧化物的方法，该方法具有设置在焦化室之间的多个焦化室和加热壁，其具有用于间接加热的加热烟道（12,12'） 焦化室。 完全或部分由焦炉气体组成的可燃气体（16）在加热烟道（12,12'）中燃烧，从而产生含有氮氧化物的废气。 在700℃〜1100℃的温度下将还原剂供给到排气中，通过还原剂和氮氧化物之间的均匀气体反应来减少废气中的氮氧化物的比例。 废气随后通过再生器（4）进行热回收。 此外，可燃气体进料的热部分上的碳沉积物用脱碳空气燃烧，其中在停止向一个加热烟道（12'）供给可燃气体的再生器半周期期间，将脱碳空气引入该 加热烟道（12'）通过相关联的燃烧器供应管线和可燃气体喷嘴（15'），并且从另一加热烟道（12）排出热废气。 根据本发明，将计量量的还原剂进料到脱碳空气中并与其一起与热废气接触。