[특허]Production of multivalent ion-rich process streams using multi-stage osmotic separation

Production of multivalent ion-rich process streams using multi-stage osmotic separation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-037/00 B01D-039/00 B01D-061/58 B01D-069/02 C02F-001/44 B01D-061/00 B01D-061/02
출원번호	US-0752626 (2016-08-12)
등록번호	US-10245555 (2019-04-02)
국제출원번호	PCT/US2016/046722 (2016-08-12)
국제공개번호	WO2017/030937 (2017-02-23)
발명자 / 주소	St. John, Maximus G. Choong, Looh Tchuin Govindan, Prakash Narayan
출원인 / 주소	Gradiant Corporation
대리인 / 주소	Wolf, Greenfield & Sacks, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 123

초록 ▼

Disclosed herein are systems and methods in which ion-selective separation and multi-stage osmotic separation is used to produce multivalent-ion-rich process streams. According to certain embodiments, multiple separations may be used to process an aqueous feed stream containing solubilized monovalent ions and solubilized multivalent ions to produce a stream enriched in the multivalent ions. The separations may be arranged, according to certain embodiments, to enhance the overall separation process such that the product stream contains—relative to the initial aqueous feed stream—a high amount of multivalent ions, a high amount of water from the aqueous feed stream, and/or a high ratio of multivalent ions to monovalent ions.

대표청구항 ▼

1. A method, comprising: transporting an aqueous feed stream containing solubilized monovalent ions and solubilized multivalent ions into an ion-selective membrane separator comprising an ion-selective membrane to produce a first permeate stream containing at least about 75% of the solubilized monovalent ions from the aqueous feed stream and a first retentate stream containing at least about 75% of the solubilized multivalent ions from the aqueous feed stream;transporting at least a portion of the first permeate stream to a first osmotic membrane separator comprising a first osmotic membrane, such that the first permeate stream portion is transported across a first side of the first osmotic membrane;transporting a first draw inlet stream across a second side of the first osmotic membrane;applying a hydraulic pressure to the first side of the first osmotic membrane such that water is transported from the first permeate stream through the first osmotic membrane to the first draw inlet stream to produce a first draw product stream having a lower osmotic pressure than the first draw inlet stream;transporting at least a portion of the first draw product stream from the second side of the first osmotic membrane to a second osmotic membrane separator comprising a second osmotic membrane, such that the first draw product stream portion is transported across a first side of the second osmotic membrane;transporting a second draw inlet stream across a second side of the second osmotic membrane;applying a hydraulic pressure to the first side of the second osmotic membrane such that water is transported from the first draw product stream through the second osmotic membrane to the second draw inlet stream to produce a second draw product stream having a lower osmotic pressure than the second draw inlet stream; andcombining at least a portion of the second draw product stream with at least a portion of the first retentate stream. 2. The method of claim 1, wherein the combining at least the portion of the second draw product stream with at least the portion of the first retentate stream comprises establishing a direct fluidic connection between the portion of the second draw product stream and the portion of the first retentate stream. 3. The method of claim 1, wherein the combining at least a portion of the second draw product stream with at least a portion of the first retentate stream comprises transporting the portion of the second draw product stream across a first side of an osmotic membrane of an osmotic membrane separator and transporting the portion of the first retentate stream across a second side of the osmotic membrane of the osmotic membrane separator. 4. The method of claim 3, wherein the transporting the portion of the second draw product stream across a first side of the osmotic membrane of the osmotic membrane separator results in the portion of the second draw product stream being transmitted through the osmotic membrane and subsequently combined with the portion of the first retentate stream. 5. The method of claim 1, wherein the combining at least the portion of the second draw product stream with at least the portion of the first retentate stream produces a multivalent-ion-enriched product stream. 6. The method of claim 5, wherein the multivalent-ion-enriched product stream contains at least about 75% of the solubilized multivalent ions from the aqueous feed stream. 7. The method of claim 5, wherein the ratio of solubilized multivalent ions within the multivalent-ion-enriched product stream to solubilized monovalent ions within the multivalent-ion-enriched product stream is at least about 3:1. 8. The method of claim 1, wherein the first osmotic membrane is used to perform reverse osmosis. 9. The method of claim 8, wherein the second osmotic membrane is used to perform forward osmosis. 10. The method of claim 1, comprising increasing the pressure of the aqueous feed stream, before it is exposed to the ion-selective membrane, using at least a portion of the pressure of a retentate product stream from the first osmotic membrane and/or the second osmotic membrane. 11. The method of claim 1, comprising removing at least a portion of a suspended or emulsified immiscible phase from the aqueous feed stream before the aqueous feed stream is transported to the ion-selective membrane separator. 12. The method of claim 1, wherein the first permeate stream portion and the first draw inlet stream are transported across the first osmotic membrane in a counter-current configuration. 13. The method of claim 1, wherein the first draw product stream and the second draw inlet stream are transported across the second osmotic membrane in a counter-current configuration. 14. The method of claim 1, wherein the ion-selective membrane has a molecular weight cut off of at least about 200 Da. 15. The method of claim 1, wherein the ion-selective membrane is a nanofiltration membrane. 16. The system of claim 1, wherein the first osmotic membrane has a molecular weight cut off of about 100 Da or less.

이 특허에 인용된 특허 (123)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
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Production of multivalent ion-rich process streams using multi-stage osmotic separation 원문보기

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Production of multivalent ion-rich process streams using multi-stage osmotic separation 원문보기

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