| 摘要 |
Process for reducing NO content of gaseous streams and more particularly the NOx content of a gaseous stream containing a significant amount of NO by scrubbing with an aqueous liquid stream in a packed bed tower or the like (15). An aqueous solution of urea, which can have a saturation concentration of urea, is employed which contains at least about 12 percent nitric acid as an oxidizing agent, which effectively oxidizes NO to NO2 thus increasing the total conversion of NOx to HNO2, which reacts with urea in aqueous solution to form H2O, NO2, and CO2. |
