公开(公告)号：US4235852A

公开(公告)日：1980-11-25

申请号：US49891

申请日：1979-06-19

申请人： Kohki Nomoto ,  Yoshihiko Kudo

发明人： Kohki Nomoto ,  Yoshihiko Kudo

IPC分类号： B01D53/34 ,  B01D53/60 ,  B01D53/77 ,  C01B17/16 ,  C01C1/08 ,  C01B17/04 ,  C01C1/10

CPC分类号： B01D53/60

摘要： A process is described for treating an exhaust gas containing NO.sub.x and SO.sub.x in which NO.sub.x and SO.sub.x are effectively converted into industrially useful products of NH.sub.3, or sulfur by use of an aqueous absorbing solution containing at least iron chelate salt and potassium sulfite.

摘要翻译： 描述了一种处理含有NOx和SO x的废气的方法，其中通过使用至少含有铁螯合盐和亚硫酸钾的含水吸收溶液，将NOx和SO x有效地转化成工业上有用的NH 3或硫的产物。

公开(公告)号：US4255401A

公开(公告)日：1981-03-10

申请号：US957441

申请日：1978-11-03

申请人： Kohki Nomoto ,  Yoshihiko Kudo

发明人： Kohki Nomoto ,  Yoshihiko Kudo

IPC分类号： B01D53/60 ,  B01D53/77 ,  C01B17/05 ,  C01B17/16 ,  C01B17/60 ,  B01D53/34

CPC分类号： B01D53/60

摘要： A method of treating an exhaust gas at a high temperature containing nitrogen oxides and sulfur oxides by bringing the exhaust gas into contact with an absorbing solution containing at least an iron chelate salt and potassium sulfite to thereby convert said nitrogen oxides and sulfur oxides into a mixture of potassium imidodisulfonate, potassium dithionate and potassium sulfate, characterized in that (1) the exhaust gas at a high temperature is cooled to a temperature below 80.degree. C. before bringing it into contact with the absorbing solution, (2) the concentration of potassium sulfite as the sulfite component in the absorbing solution is kept at least at 0.8 mol/kg, and (3) the mixture of salts produced in the absorbing solution is crystallized by cooling and separated by filtering the absorbing solution.

摘要翻译： 一种通过使排气与至少含有铁螯合盐和亚硫酸钾的吸收溶液接触来处理含有氮氧化物和硫氧化物的高温废气的方法，从而将所述氮氧化物和硫氧化物转化为混合物 的亚氨基二磺酸钾，二硫酸钾和硫酸钾，其特征在于：（1）将高温废气冷却至低于80℃的温度，然后使其与吸收溶液接触，（2）钾浓度 吸收溶液中的亚硫酸盐组分的亚硫酸盐保持至少为0.8mol / kg，（3）通过冷却使吸收溶液中产生的盐的混合物结晶，并通过过滤吸收溶液进行分离。