| 摘要 |
PURPOSE:To enhance gas absorbing capacity and velocity, by adding sodium bromide to a mixture consisting of an aqueous sulfuric acid solution and activated coal to perform reaction and separating a solid from the reaction product to dry the same. CONSTITUTION:An aqueous sulfuric acid solution and activated coal are compounded to prepare a mixture and sodium bromide is added to said mixture to perform reaction. Subsequently, a solid is separated from the reaction mixture and dried to obtain a gas adsorbent. As the shape of activated carbon, powdery, flaky, granular and molded granular ones can be taken. The concn. of sulfuric acid of the aqueous sulfuric acid solution is pref. 1.1-1.7N. It is pref. to add sodium bromide under cooling so as to adjust the temp. of the mixture to 55 deg.C or less and the addition amount of sodium bromide is pref. set to about 4pts. or more by wt. of 100pt.wt. of activated carbon.
|
