公开(公告)号：EP3971159A1

公开(公告)日：2022-03-23

申请号：EP21819014.8

申请日：2021-05-31

申请人： LG Chem, Ltd.

发明人： KANG, Min Suk ,  LEE, Sang Beom ,  JANG, Chi Hyun

IPC分类号： C07C37/74 ,  C07C39/04 ,  C07C7/04 ,  C07C15/46 ,  C07C15/085

摘要： Provided is a method of decomposing phenol-based by-product, and more particularly, a method of decomposing phenol-based by-product including: introducing a phenol-based by-product stream, a first stream of a side discharge stream from a decomposition device, and a process water stream to a mixing device and mixing the streams; introducing a discharge stream from the mixing device to a layer separation device to phase-separate the stream into an oil phase and an aqueous phase; passing an oil stream discharged from the layer separation device through any one or more of a first heat exchanger and a second heat exchanger and introducing the stream to the decomposition device to carry out decomposition; and supplying the first stream of the side discharge stream from the decomposition device to the mixing device, forming a mixed stream of a second stream of the side discharge stream with a lower discharge stream and discharging the mixed stream, and recovering effective components from an upper discharge stream.

公开(公告)号：EP3896051A1

公开(公告)日：2021-10-20

申请号：EP20864475.7

申请日：2020-08-11

申请人： LG Chem, Ltd.

发明人： KANG, Min Suk ,  LEE, Sang Beom ,  JANG, Chi Hyun

IPC分类号： C07C37/74 ,  C07C39/04 ,  C07C7/04 ,  C07C15/46 ,  C07C15/085

摘要： The present disclosure provides a method for decomposing a phenolic by-product, the method including: a step S10 of feeding a phenolic by-product stream to a decomposition apparatus and thermally cracking the phenolic by-product stream; a step S20 of recovering an active ingredient from a top discharge stream of the decomposition apparatus and discharging a substance having a high boiling point through a bottom discharge stream of the decomposition apparatus; a step S30 of passing a part of the bottom discharge stream of the decomposition apparatus through a reboiler and then feeding the part of the bottom discharge stream of the decomposition apparatus to the decomposition apparatus and discharging a residual stream of the bottom discharge stream of the decomposition apparatus; and a step S40 of feeding a side discharge stream of the decomposition apparatus to the reboiler.

公开(公告)号：EP3988535A1

公开(公告)日：2022-04-27

申请号：EP21840413.5

申请日：2021-06-15

申请人： LG Chem, Ltd.

发明人： KANG, Min Suk ,  LEE, Sang Beom ,  SON, Ji Hyang ,  JANG, Chi Hyun

IPC分类号： C07C37/74 ,  C07C39/16 ,  C07C39/04 ,  C07C7/04 ,  C07C15/46 ,  C07C15/085

摘要： Provided is a method of decomposing phenolic by-products, and more particularly, a method of decomposing phenolic by-products including: supplying a phenolic by-product stream to a decomposition device to perform thermal decomposition; separating an upper discharge stream including effective components and a lower discharge stream including materials having a high boiling point in the decomposition device; supplying the lower discharge stream from the decomposition device, a side discharge stream from the decomposition device, and a process water stream to a mixing device and mixing these streams; and supplying a discharge stream from the mixing device to a layer separation device to separate the dischrage stream from the mixing device into an oil phase and an aqueous phase.

公开(公告)号：EP3957623A1

公开(公告)日：2022-02-23

申请号：EP20931694.2

申请日：2020-11-23

申请人： LG CHEM, LTD.

发明人： KANG, Min Suk ,  LEE, Sang Beom ,  JANG, Chi Hyun

IPC分类号： C07C37/70 ,  C07C37/68 ,  B01D3/32

摘要： The present invention relates to a method of decomposing a phenolic by-product, and more particularly, to a method of decomposing a phenolic by-product, the method including: a step of feeding and thermally cracking a phenolic by-product stream to and in a decomposition apparatus, recovering an active ingredient from a top discharge stream, and discharging a high-boiling substance through a bottom discharge stream; a step of pressurizing each of a side discharge stream of the decomposition apparatus and a bottom discharge stream of the decomposition apparatus; a step of mixing the pressurized side discharge stream of the decomposition apparatus and the pressurized bottom discharge stream of the decomposition apparatus with each other to form a mixed stream; and a step of passing a part of the mixed stream through a reboiler, circulating the part of the mixed stream to the decomposition apparatus, and discharging a residual mixed stream.