公开(公告)号：US20240246837A1

公开(公告)日：2024-07-25

申请号：US18017794

申请日：2022-07-01

Applicant: LG Chem, Ltd.

Inventor： Suk Yung Oh ,  Yong Heon Cho ,  Jung Su Han ,  Jun Seok Ko ,  Nam Young Yoon ,  Sung Hwan Kim

IPC: C02F1/04 ,  C02F1/66 ,  C02F101/16

CPC classification number: C02F1/048 ,  C02F1/043 ,  C02F1/66 ,  C02F2101/16

Abstract: Provided is a wastewater purification method, the method including: supplying a first mixed stream, in which an acid component and wastewater including water, a nitrile-based monomer, and ammonia are mixed, to a first column; recovering the nitrile-based monomer from an upper discharge stream from the first column; supplying a second mixed stream, in which a lower discharge stream from the first column and a base component are mixed, to a second column; and recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater.

公开(公告)号：US12215042B2

公开(公告)日：2025-02-04

申请号：US18017794

申请日：2022-07-01

Applicant: LG Chem, Ltd.

Inventor： Suk Yung Oh ,  Yong Heon Cho ,  Jung Su Han ,  Jun Seok Ko ,  Nam Young Yoon ,  Sung Hwan Kim

IPC: C02F1/04 ,  C02F1/66 ,  C02F101/16

Abstract: Provided is a wastewater purification method, the method including: supplying a first mixed stream, in which an acid component and wastewater including water, a nitrile-based monomer, and ammonia are mixed, to a first column; recovering the nitrile-based monomer from an upper discharge stream from the first column; supplying a second mixed stream, in which a lower discharge stream from the first column and a base component are mixed, to a second column; and recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater.

公开(公告)号：US20240360006A1

公开(公告)日：2024-10-31

申请号：US18027207

申请日：2022-07-25

Applicant: LG Chem, Ltd.

Inventor： Suk Yung Oh ,  Yong Heon Cho ,  Joo Sik Oh ,  Jun Seok Ko ,  Kyeong Hyeon Jo ,  Seung Whan Oh

IPC: C02F1/04 ,  C02F1/40 ,  C02F101/16 ,  C02F101/38 ,  C02F103/38

CPC classification number: C02F1/048 ,  C02F1/40 ,  C02F2101/16 ,  C02F2101/38 ,  C02F2103/38 ,  C02F2209/02 ,  C02F2209/03

Abstract: A method for purifying of waste water includes: supplying a mixed stream, in which wastewater including water, a nitrile-based monomer, and ammonia and an acid component are mixed, to a first column; condensing an upper discharge stream of the first column, supplying the condensed stream to a decanter to separate the stream into a water layer and an organic layer, and supplying components of the organic layer to a second column; and separating a by-product from a lower discharge stream of the second column, and recovering the nitrile-based monomer from an upper discharge stream of the second column.