What are the defects of production technology of activated c

What are the defects of production technology of activated clay

 

Northeast active clay is a kind of adsorbent with high activity, which is made of bentonite. It is widely used in the decolorization of oil industry. Northeast active clay is a milky white powder adsorbent made of bentonite as material, inorganic acidification treatment, water rinsing and dryness. However, there are certain defects in the production process of northeast active clay. The following is a specific introduction of Tongxin bentonite company:

 

(1) it has certain selectivity to the original bentonite. Not all different types of bentonite can produce activated clay with the decolorization rate ≥ 90%, that is to say, some types of bentonite can only produce ordinary activated clay or semi activated clay with the decolorization rate ≥ 80-85%. The activity index can not meet the requirements of H-type (high activity activated clay) for the time being. So its application scope is restricted.

 

(2) for the treatment of acid wastewater, the amount of lime is too large at present.

 

(3) high oil absorption rate. The decolorization amount of activated clay is 2% - 5% of oil weight. When bleaching oil with clay, it is inevitable to contain oil, which is generally 20% - 50% of active clay, and then increase refining consumption and cost. At present, a small number of enterprises use the leaching method to separate the oil from the activated waste clay, but the separated oil can't be decolorized because of the effect of the clay and the color is pitch black. Therefore, domestic oil decolorization departments expect active clay with low oil absorption rate. Beipiao Tongxin bentonite company