-
公开(公告)号：US10543453B2
公开(公告)日：2020-01-28
申请号：US16092103
申请日：2017-04-18
Applicant: MECS, INC.
Inventor： Ernesto Vera-Castaneda
Abstract: Generally, the present invention relates to the selective removal of divalent sulfur oxyanions (e.g., sulfate) from an aqueous solvent using an anion exchange resin. More particularly, this invention relates to regenerative processes for the selective removal and recovery of sulfur dioxide from a source gas using an aqueous absorption medium in which an anion exchange resin is used to selectively remove divalent sulfur oxyanion impurities accumulating in the recirculating aqueous absorption medium.
-
公开(公告)号：US20190263669A1
公开(公告)日：2019-08-29
申请号：US16405256
申请日：2019-05-07
Applicant: Malvi Technologies, LLC
Inventor： Vinod Malhotra
IPC: C01D15/02 , B01J49/07 , B01J49/60 , B01J41/05 , B01J47/06 , B01J47/016 , B01J8/00 , B01J41/12 , B01J4/00
Abstract: Embodiments of the invention relate to systems, methods, and equipment to make lithium hydroxide from lithium salts.
-
Patent Agency Ranking
公开(公告)号：US20190111381A1
公开(公告)日：2019-04-18
申请号：US16092103
申请日：2017-04-18
Applicant: MECS, INC.
Inventor： Ernesto Vera-Castaneda
Abstract: Generally, the present invention relates to the selective removal of divalent sulfur oxyanions (e.g., sulfate) from an aqueous solvent using an anion exchange resin. More particularly, this invention relates to regenerative processes for the selective removal and recovery of sulfur dioxide from a source gas using an aqueous absorption medium in which an anion exchange resin is used to selectively remove divalent sulfur oxyanion impurities accumulating in the recirculating aqueous absorption medium.
-
公开(公告)号：US09962658B2
公开(公告)日：2018-05-08
申请号：US14889445
申请日：2014-04-24
Applicant: EURODIA INDUSTRIE SA
Inventor： Marc André Theoleyre , Anne Gonin , Gérard Guerif
IPC: B01D61/44 , B01D61/58 , B01D61/02 , B01J49/07 , B01J49/20 , B01J49/30 , B01D61/14 , C02F1/469 , C02F1/42 , C02F101/34 , C02F103/26
CPC classification number: B01D61/58 , B01D61/025 , B01D61/027 , B01D61/145 , B01D61/44 , B01D2317/022 , B01D2317/025 , B01J49/07 , B01J49/20 , B01J49/30 , C02F1/42 , C02F1/4693 , C02F2101/345 , C02F2103/26 , C02F2303/16
Abstract: The object of the present invention is a method for recirculating a reprocessing effluent comprising chloride ions from an ion exchange resin comprising the following steps: (ii) selecting fractions A, B, and optionally B′, directly stemming from a reprocessing effluent comprising chloride ions or after one or several steps for modifying the chloride ion concentration, having concentrations of chloride ions (g/l) of respectively (a), (b) and (b′)>0 g/l, with (a)>(b); (iii) transferring by electrodialysis the chloride ions from the fraction B to fraction A for obtaining a fraction C having a chloride ion concentration (c) greater than (a); or (iv) transferring by electrodialysis the chloride ions from fraction B to fraction B′, in order to obtain a fraction B″ having a concentration of chloride ions (b″) greater than (b′) and then mixing the fractions B″ and A in order to obtain a fraction C having a chloride ion concentration (c) greater than (a).
-
公开(公告)号：US09908112B2
公开(公告)日：2018-03-06
申请号：US14764756
申请日：2014-02-03
Applicant: IONEX SG LIMITED
Inventor： Michael Waite
IPC: B01J49/00 , B01J41/05 , B01J49/07 , B01J49/57 , B01J49/60 , C02F1/42 , C02F101/16 , C02F101/22 , C02F1/461
CPC classification number: B01J49/57 , B01J41/05 , B01J49/07 , B01J49/60 , C02F1/42 , C02F1/461 , C02F2001/422 , C02F2101/163 , C02F2101/22 , C02F2303/16
Abstract: The present invention relates to a method of regenerating an ion exchange material loaded with chromate ions and nitrate ions in an ion exchange column, the method comprising subjecting the loaded ion exchange column to a regeneration sequence comprising the following steps: (i) passing a first salt solution through the column forming a first effluent solution; (ii) passing a second salt solution through the column to at least partially remove the chromate ions from the column forming a second effluent solution, wherein the second salt solution has a higher salt concentration than the first salt solution; (iii) passing a third salt solution through the column to at least partially remove nitrate ions from the column forming a third effluent solution, wherein the third salt solution has a salt concentration higher than the second salt solution.
-
公开(公告)号：US09670075B1
公开(公告)日：2017-06-06
申请号：US14455360
申请日：2014-08-08
Applicant: Paul Wegner
Inventor： Paul Wegner
IPC: C02F1/28 , B01J49/00 , C02F1/42 , C02F101/16 , C02F103/00 , B01J49/57 , B01J49/07
CPC classification number: C02F1/42 , B01J49/07 , B01J49/57 , C02F2001/422 , C02F2001/425 , C02F2101/163 , C02F2103/001 , C02F2103/06 , C02F2303/16
Abstract: A system and process for nitrate reduction from a water source. The process includes the steps of passing nitrate contaminated water through a strong acid cation exchange resin to reduce cations. The effluent is thereafter passed through a weak base anion exchange resin in order to reduce nitrate content. The strong acid cation exchange resin is regenerated, and the weak base anion exchange resin is also regenerated.
-
47.发明授权Process for reducing the wash water requirement of weakly basic anion exchangers 失效降低弱碱性阴离子交换剂洗涤水需求的方法
公开(公告)号：US4705637A
公开(公告)日：1987-11-10
申请号：US740089
申请日：1985-05-31
Applicant: Harold Heller , Peter M. Lange , Friedrich Martinola
Inventor： Harold Heller , Peter M. Lange , Friedrich Martinola
CPC classification number: B01J49/0013 , B01J41/046
Abstract: The invention relate to a process for reducing the wash water required by weakly basic anion exchangers containing primary and/or secondary amino groups when fed with water containing carbon dioxide; in accordance with the process the exhausted, weakly basic anion exchangers are treated with dilute aqueous mineral acids before being regenerated.
Abstract translation: 本发明涉及一种当含有二氧化碳的水时，减少含有伯氨基和/或仲氨基的弱碱性阴离子交换剂所需的洗涤水的方法; 根据该方法，在再生之前用稀释的无机酸水溶液处理耗尽的弱碱性阴离子交换剂。
-
-
-
-
-
-
Search Results
47
records
(took 0.015 seconds)
