公开(公告)号：EP4442343A1

公开(公告)日：2024-10-09

申请号：EP24157964.8

申请日：2024-02-15

申请人： Koch Technology Solutions UK Limited

发明人： Collias, Constantine ,  Bootsma, Jason Alan ,  Shay, Daniel Travis

IPC分类号： B01D15/10 ,  B01D15/12 ,  B01D15/14 ,  B01D15/18 ,  B01D15/26 ,  B01D15/36 ,  B01D15/42 ,  B01J20/02 ,  B01J20/04 ,  B01J20/08 ,  B01J39/02 ,  B01J39/09 ,  B01J39/10 ,  C02F1/28 ,  C02F1/66 ,  C02F9/00 ,  C22B3/24 ,  C22B3/42 ,  C22B7/00 ,  C22B26/12 ,  H01M6/52

CPC分类号： B01D15/1864 ,  B01J20/041 ,  B01J20/08 ,  C22B3/42 ,  C22B7/006 ,  C22B26/12 ,  H01M6/52 ,  H01M10/54 ,  C22B3/24 ,  C02F2001/42520130101 ,  C02F1/281 ,  C02F2303/1620130101 ,  B01J39/10 ,  B01J47/02 ,  B01J2220/5620130101 ,  B01J2220/60320130101 ,  B01J20/3475 ,  B01J20/3433 ,  B01J20/06 ,  B01D15/1871 ,  H01M10/052

摘要： The disclosed process relates to a process for selectively purifying a lithium product stream from an aqueous lithium salt-containing solution in a continuous mode, said process comprising the steps of: a) introducing said aqueous lithium salt-containing solution to an arrangement of three or more packed-bed columns in series each filled with a lithium selective sorbent, wherein at least two of said three or more columns are at an adsorption stage, with one at a leading lithium chloride adsorption stage and one or more at a trailing lithium chloride adsorption stage, and at least one of said three or more columns is simultaneously at a lithium chloride desorption stage; b) flowing said aqueous lithium salt-containing solution through said at least two of said three or more columns at a leading lithium chloride adsorption stage and a trailing lithium chloride adsorption stage to adsorb lithium chloride from the aqueous lithium salt-containing solution and respectively form a fully-saturated sorbent and a partially-saturated sorbent; c) flowing a desorbent fluid through said at least one of said three or more columns at a lithium chloride desorption stage to desorb lithium chloride from the fully-saturated sorbent in a column from a leading lithium chloride adsorption stage of a previous cycle in an eluate stream; and d) recovering a lithium product stream from the eluate stream, wherein when the lithium selective sorbent in said column at a leading lithium chloride adsorption stage is fully-saturated with lithium chloride, said column transitions directly to said lithium chloride desorption stage to desorb lithium chloride once appropriate void volume is displaced; said column at a trailing lithium chloride adsorption stage transitions directly to said leading lithium chloride adsorption stage for further adsorption of lithium chloride; and said column at a lithium chloride desorption stage transitions directly to said trailing lithium chloride adsorption stage for initial adsorption of lithium chloride once appropriate void volume is displaced; without any intermediate washing stages of the media between any of said transitions.