SORBENT FOR ATMOSPHERIC AIR CLEANING Russian patent published in 2012 - IPC B01J20/16 B01J20/04 B01J20/30 B01D53/02 

FIELD: process engineering.

SUBSTANCE: invention relates to sorption cleaning of air of nitrogen, sulfur oxides and hydrogen sulfide. Sorbent is produced by mixing 100 g of fine Portland cement 500, 100 g of Astrakhan Region boxes with 100 cm³ of 10%-water solution of table salt, and making granules with 0.5 - 5 cm-diameter. Produced mix is hardened and placed in running water unless negative reaction to chloride-ion. After drying, granules are placed in 40%-solution of diethanolamine for 1 h. Then, granules are placed onto sieve to be dried in air flow. Sorbet features the following chemical composition, in wt %: CaO - 40.0, SiO₂ -15.0, NH(CH₂)₄OH₂ - 5.0, H₂O - 5.0.

EFFECT: efficient air cleaning.

2 cl, 2 tbl