公开(公告)号：US20250033987A1

公开(公告)日：2025-01-30

申请号：US18570596

申请日：2022-11-29

Applicant: LG CHEM, LTD.

Inventor： Sang Won HAN ,  Sangbum AHN ,  Yongbok JEONG ,  Woochul JUNG ,  Si Min KIM ,  Jimyeong KIM ,  Taeho KIM ,  Donggyun KANG

IPC: C01F11/46 ,  C12N1/20 ,  C12N9/02 ,  C12N9/10 ,  C12N9/88 ,  C12N15/70

Abstract: The present invention relates to a process of recovering an alkali metal sulfate, comprising: forming an organic acid fermentation liquid containing an alkali metal salt of organic acid; and adding sulfuric acid to the organic acid fermentation liquid to form and recover an alkali metal sulfate, wherein the alkali metal sulfate has a radioactivity concentration index of 1 or less, and to an alkali metal sulfate crystal comprising a predetermined peak in an X-ray diffraction spectrum (XRD) and having a radioactivity concentration index of 1 or less.

公开(公告)号：US20240417364A1

公开(公告)日：2024-12-19

申请号：US18571995

申请日：2022-11-29

Applicant: LG CHEM, LTD.

Inventor： Sangbum AHN ,  Woochul JUNG ,  Sang Won HAN ,  Yongbok JEONG ,  Seung A WOO ,  Jimyeong KIM

IPC: C07C59/01 ,  C12P7/42

Abstract: The present invention relates to a 3-hydroxypropionate crystal which comprises an alkali metal salt of 3-hydroxypropionic acid or a hydrate thereof, and comprises a first peak at a predetermined diffraction angle (2θ±0.2°) in an X-ray diffraction spectrum (XRD), a method for preparing the same, and a process of recovering 3-hydroxypropionic acid.

公开(公告)号：US20240279692A1

公开(公告)日：2024-08-22

申请号：US18571983

申请日：2022-11-29

Applicant: LG CHEM, LTD.

Inventor： Sang Won HAN ,  Taeho KIM ,  Yongbok JEONG ,  Sangbum AHN ,  Woochul JUNG ,  Donggyun KANG ,  Si Min KIM ,  Jimyeong KIM ,  Yongju BANG ,  Jeong Eun KIM ,  Jae Hoon CHOE

IPC: C12P7/42

CPC classification number: C12P7/42

Abstract: The present invention relates to a process of recovering alkali metal salt hydrate and 3-hydroxypropionic acid, comprising: forming and separating 3-hydroxypropionic acid salt crystal from a concentrate containing 3-hydroxypropionic acid in the presence of an alkali metal salt; and adding an acid to the aqueous solution containing the separated 3-hydroxypropionic acid salt crystal to form and separate an alkali metal salt hydrate and 3-hydroxypropionic acid.