Low-temp catalytic process for removing nitroxide, ammonia, CO and hydrogen from industrial gas or waste gas

Application Number: 00122945
Application Date: 2000.08.30
Publication Number: 1340372
Publication Date: 2002.03.20
Priority Information:
International: B01D53/48;B01D53/56;B01D53/86
Applicant(s) Name: Dalian Inst of Chemicophysics, Chinese Academy of Sciences
Address:
Inventor(s) Name: Wu Diyong;Qin Yongsheng;Wang Shudong
Patent Agency Code: 21002
Patent Agent: zhang chen
Abstract A low-temp. catalytic process for removing Nox, NH3, CO and H2 from the industrial gas or waste gas containing O2 (3-20%), No (5-1000 ppm), CO2 (0.05-25%), Co (0.01-0.6%), H2 (0.01-0.5%), H2O (0.1-30% and SO2 (0-50 ppm) features that a non-uniformly distributed egg shell type catalyst with low content of noble metal is used, which is composed of carrier (alpha-Al2O3) and active component Pd and/or Pt). After the NH3 (with NH3/NO=1-3 is proportionally added to the industrial or waste gas, the NOx, NH3, Co and H2 can be removed at 160-280 deg.C down to below 10 ppm. Its advantages include high removal rate, low consumption of NH3 and nobble metal, and no secondary ammonia pollution.