METHOD FOR ABSORPTION GAS DESICCATION Russian patent published in 2003 - IPC

FIELD: chemical technology. SUBSTANCE: invention relates to desiccation of gases. Method involves gas separation from hydrocarbon liquid and water, gas feeding for contact with regenerated sorbent, removal of desiccated gas and saturated sorbent, feeding the latter for regeneration with steaming moisture, removal of part of regenerated sorbent for purification. Before purification removed part of regenerated sorbent is fed for contact with water with acidity pH < 7, then contact with water with acidity pH = 7 before final purification. Water with acidity pH < 7 or pH = 7 is prepared by water electrodialysis steamed in sorbent regeneration or its mixture with bed water separated at gas separation. Water steamed at absorbent regeneration is used as water with acidity pH = 7. The final purification of regenerated absorbent after its contact with water with different acidity is carried out filtration. Invention provides to reduce exploitation consumptions, to enhance quality of absorbent and to prolong its working capacity. EFFECT: improved desiccation method. 4 cl, 1 dwg