PURPOSE: To provide an absorbent for nitrogen oxides which can be used to remove and recover nitrogen oxides in a high temp. gas without consuming expensive ammonia and can easily be regenerated, to provide the production method and regenerating method of the absorbent for nitrogen oxides, and to recover nitrogen oxides in high temp. gas by using this absorbent for nitrogen oxides.
CONSTITUTION: The absorbent for nitrogen oxides consists of such a material containing a mixture of oxides or hydroxides of alkaline-earth elements and oxides of transition elements. Thus, nitrogen oxides in high temp. gas can efficiently be removed and recovered without consuming expensive ammonia. Also, there are provided the production and regeneration method of the absorbent and recovering method of nitrogen oxides.
MAEZONO SHUNICHIRO
SUEMOTO HIDETOSHI
YOKOYAMA TAKAHISA
DOWA MINING CO