SOLID COMPOSITE ADSORBENT FOR TREATMENT OF HYDROCARBON STREAMS, METHOD FOR PREPARATION THEREOF, AND A IMPURITIES-REMOVAL PROCESS Russian patent published in 2005 - IPC

FIELD: sorbents.

SUBSTANCE: invention provides an improved adsorbent to remove impurities form various hydrocarbon streams. Adsorbent contains zeolite, alumina, and an additional metal oxide, at least 10 mol % of metal in the metal oxide being based on stoichiometric amount of metal required to compensate negative charge of zeolite lattice. Resulting adsorbent containing zeolite X, aluminum oxide, and sodium is successfully used to treat ethylene stream to liberate the latter from CO₂, H₂S, methanol, and other sulfur- and oxygen-containing compounds.

EFFECT: expanded hydrocarbon purification possibilities.

6 cl, 4 tbl, 11 ex