REMOVAL OF CONTAMINANTS FROM GAS FLOWS Russian patent published in 2013 - IPC B01D53/52 B01J20/06 B01J20/10 B01J20/34 

FIELD: process engineering.

SUBSTANCE: invention relates to removal of contaminants from gas flow by contact with recyclable sorbent. Proposed method comprises a) bringing gas flow containing H₂S in contact with chlorine-bearing compound to form mixed gas flow; b) bringing said mixed flow in contact with sorbent in sorption zone to produce first product gas flow and sulfur-saturated sorbent wherein the latter includes zinc, silicon dioxide and promoter metal; c) drying of said sulfur-saturated sorbent to obtain sulfur-saturated dried sorbent; d) bringing said dried sorbent in contact with regeneration gas flow in regeneration zone to obtain regenerated sorbent including zinc-containing compound, silicate and promoter metal and off-gas flow; e) returning regenerated sorbent in sorption zone to produce renewed sorbent including zinc, silicon dioxide and promoter metal; f) bringing renewed sorbent in contact with said mixed gas flow in sorption zone to produce second product gas flow and sulfur-bearing sorbent.

EFFECT: limited silicate formation.

20 cl, 2 dwg, 4 tbl, 1 ex