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1. (WO2017060456) METHOD FOR CRYSTALLISING CLATHRATE HYDRATES, AND METHOD FOR PURIFYING AN AQUEOUS LIQUID USING THE CLATHRATE HYDRATES THUS CRYSTALLISED
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2017/060456    International Application No.:    PCT/EP2016/074044
Publication Date: 13.04.2017 International Filing Date: 07.10.2016
Chapter 2 Demand Filed:    31.01.2017    
IPC:
C30B 7/08 (2006.01), C30B 29/54 (2006.01), B01D 9/00 (2006.01), C02F 1/52 (2006.01)
Applicants: BGH [FR/FR]; Allée Le Corbusier, Bâtiment Chemstart'Up 64170 Lacq (FR)
Inventors: MOTTET, Bruno; (FR)
Agent: BREVALEX; 56 Boulevard de l'Embouchure, B.P. 27519 31075 Toulouse Cedex 2 (FR)
Priority Data:
15306602.2 09.10.2015 EP
Title (EN) METHOD FOR CRYSTALLISING CLATHRATE HYDRATES, AND METHOD FOR PURIFYING AN AQUEOUS LIQUID USING THE CLATHRATE HYDRATES THUS CRYSTALLISED
(FR) PROCEDE POUR CRISTALLISER DES CLATHRATES HYDRATES, ET PROCEDE DE PURIFICATION D'UN LIQUIDE AQUEUX UTILISANT LES CLATHRATES HYDRATES AINSI CRISTALLISES.
Abstract: front page image
(EN)The invention relates to a method for forming, or crystallising, clathrate hydrates of a host molecule in a liquid including water, characterised in that the following consecutive steps are performed: cooling the liquid to a temperature no higher than the crystallisation temperature of the clathrate hydrates; placing the cooled liquid in contact with host molecules that are capable of forming clathrate hydrates and are adsorbed on a solid substrate that has a large specific surface area and is made of a hydrophobic and apolar material, by means of which the host molecules are desorbed from the solid substrate that has a large specific surface area and is made of a hydrophobic and apolar material, and react with the water of the liquid in order to provide a liquid containing clathrate hydrates and the solid substrate. The invention also relates to a method for purifying a liquid including water and at least one impurity, in which the following consecutive steps are performed: a1) forming clathrate hydrates of the host molecule in the liquid by the method above; b1) separating the clathrate hydrates and the solid substrate from the liquid; c1) dissociating the separated clathrate hydrates in order to obtain pure water as well as the host molecule adsorbed again on the solid substrate.
(FR)Procédé pour former, cristalliser, des clathrates hydrates d'une molécule hôte dans un liquide comprenant de l'eau, caractérisé en ce que on réalise les étapes successives suivantes : - on refroidit le liquide jusqu'à une température inférieure ou égale à la température de cristallisation des clathrates hydrates; on met en contact le liquide refroidi avec des molécules hôtes capables de former des clathrates hydrates, adsorbées sur un support solide de grande surface spécifique en un matériau hydrophobe et apolaire, moyennant quoi les molécules hôtes sont désorbées du support solide de grande surface spécifique en un matériau hydrophobe et apolaire et réagissent avec l'eau du liquide pour donner un liquide contenant des clathrates hydrates et le support solide. Procédé de purification d'un liquide comprenant de l'eau et au moins une impureté, dans lequel on réalise les étapes successives suivantes : a1) on forme des clathrates hydrates de la molécule hôte dans le liquide par le procédé ci-dessus; b1) on sépare les clathrates hydrates et le support solide du liquide; c1) on dissocie les clathrates hydrates séparés pour obtenir d'une part de l'eau pure et d'autre part la molécule hôte de nouveau adsorbée sur le support solide.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)