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    • 9. 发明专利
    • Reduction apparatus and denitrification apparatus
    • 减少装置和破坏装置
    • JP2003080025A
    • 2003-03-18
    • JP2001274341
    • 2001-09-10
    • Mitsubishi Heavy Ind LtdAkira Mizuno三菱重工業株式会社彰 水野
    • IWABUCHI HIROYUKIUEDA YASUTOSHIKAGAMI MORIOMIZUNO AKIRAISHIBASHI MASARU
    • F01N3/08B01D53/56B01D53/81B01D53/86B01J19/08B01J19/12B01J35/02F01N3/10
    • Y02A50/2345
    • PROBLEM TO BE SOLVED: To decrease the use quantity of a reduction gas in a reducing reaction in a denitrification step.
      SOLUTION: When a treating gas containing nitrogen oxide flows from the upstream side A of a denitrification apparatus 106 to be supplied to the denitrifrication apparatus 106, corona discharge is produced by AC voltage applied between an electrode 35 and a wire like electrode 24 to form a non- equilibrium plasma atmosphere. NO in the treating gas is oxidized in the atmosphere to be changed to NO
      2 . The NO
      2 is adsorbed by an alkali adsorbing material 64 made of Ba(OH)
      2 coming out from holes 35a provided on the electrode 35 to be turned to Ba(NO
      3 )
      2 to and stored. Because DC voltage is also applied to the electrode 35 and the wire like electrode 24 from a DC power source 213, NO
      3
      - in the alkali adsorbing material 64 moves toward a positive electrode (the electrode 35) to be decomposed into N
      2 and O
      2 .
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:减少脱氮步骤中的还原反应中的还原气体的使用量。 解决方案:当含氮氧化物的处理气体从反硝化设备106的上游侧A流入供给到脱氮装置106时,通过施加在电极35和线状电极24之间的交流电压产生电晕放电,形成 非平衡等离子体气氛。 处理气体中的NO在大气中被氧化而变为NO2。 NO2被从由设置​​在电极35上的孔35a出来的Ba(OH)2制成的碱吸附材料64吸附以转变为Ba(NO 3)2并被储存。 由于直流电压也从直流电源213向电极35和线状电极24施加,碱吸附材料64中的NO 3 - 向正极(电极35)移动,分解成N2和O2 。