公开(公告)号：US20220371000A1

公开(公告)日：2022-11-24

申请号：US17763088

申请日：2020-09-15

Applicant: ORGANO CORPORATION

Inventor： Ryosuke TERASHI ,  Kyosuke YAMADA

IPC: B01J47/026 ,  B01D61/36 ,  B01D1/02 ,  B01J47/04 ,  B01J47/10 ,  B01J47/14 ,  C07D207/267 ,  C07B63/00

Abstract: A purification method for separating and purifying an organic solvent from a liquid mixture of an organic solvent and water, the organic solvent having a boiling point of more than 100° C. at 1 atm, includes the steps of: passing the liquid mixture through a first ion exchange device; supplying the liquid mixture discharged from the first ion exchange device to a pervaporation device to selectively separate water component; supplying the organic solvent recovered from the concentration side of the pervaporation device to an evaporator to obtain a purified organic solvent; and passing, through the second ion exchange device, a portion of liquid containing the organic solvent and flowing at a first position subsequent to the first ion exchange device. The liquid discharged from the second ion exchange device is returned to a second position which is at a preceding stage of the pervaporation device.

公开(公告)号：US20170158635A1

公开(公告)日：2017-06-08

申请号：US15327504

申请日：2015-07-22

Applicant: ORGANO CORPORATION

Inventor： Ryosuke TERASHI

IPC: C07D207/267 ,  B01D61/58 ,  C02F1/20 ,  B01D19/00 ,  B01D3/10 ,  C02F1/44 ,  B01D61/36 ,  B01D15/36

CPC classification number: C07D207/267 ,  B01D3/10 ,  B01D15/363 ,  B01D19/0031 ,  B01D61/36 ,  B01D61/362 ,  B01D61/58 ,  B01D2311/02 ,  B01D2311/06 ,  B01J47/02 ,  C02F1/20 ,  C02F1/44 ,  C02F1/448 ,  C02F2001/422 ,  C02F2103/34 ,  Y02P20/57

Abstract: An organic solvent purification system that separates an organic solvent having a boiling point of more than 100° C. at 1 atm, such as N-methyl-2-pyrrolidone (NMP), from a liquid mixture containing the organic solvent and water and purifies the organic solvent includes: a heater that heats the liquid mixture; a pervaporation apparatus that includes a pervaporation membrane, and is provided at subsequent position of the heater, the pervaporation apparatus separating the organic solvent from the water; a vacuum evaporator to which the organic solvent collected from a concentration side of the pervaporation apparatus is supplied; and piping that supplies the heater with the organic solvent vaporized in the vacuum evaporator as a heat source of the heater. The heater heats the liquid mixture using concentration heat of the organic solvent vaporized by the vacuum evaporator.

公开(公告)号：US20240342657A1

公开(公告)日：2024-10-17

申请号：US18703459

申请日：2022-09-09

Applicant: ORGANO CORPORATION

Inventor： Keisuke SASAKI ,  Yuki NAKAMURA ,  Ryosuke TERASHI ,  Fumio SUDO

IPC: B01D61/58 ,  B01D61/02 ,  B01D61/48 ,  C02F1/44 ,  C02F1/469 ,  C02F101/10

CPC classification number: B01D61/58 ,  C02F1/441 ,  C02F1/4695 ,  B01D61/025 ,  B01D61/48 ,  B01D2313/221 ,  C02F2101/108 ,  C02F2209/02 ,  C02F2301/046 ,  C02F2303/10

Abstract: A water treatment system includes a reverse osmosis membrane device, an electrodeionization device that is located downstream of the reverse osmosis membrane device, a first heat exchanger that is located upstream of the reverse osmosis membrane device and that adjusts the temperature of the water supplied to the reverse osmosis membrane device according to the temperature of raw water supplied to the water treatment system, and a second heat exchanger that is located between the reverse osmosis membrane device and the electrodeionization device and that cools the water supplied to the electrodeionization device. One of the first heat exchanger and the second heat exchanger is an internal heat exchanger that exchanges heat inside the water treatment system, and the other is an external heat exchanger that exchanges heat with the outside of the water treatment system.