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1. WO2018156039 - CENTRIFUGAL FILTRATION DEVICE AND METHOD FOR CONCENTRATING LIQUID MIXTURES

Publication Number WO/2018/156039
Publication Date 30.08.2018
International Application No. PCT/PT2018/050006
International Filing Date 23.02.2018
IPC
B01D 61/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration
08Apparatus therefor
B01D 33/15 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
15with rotary plane filtering surfaces
B01L 3/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
3Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
B01D 61/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
18Apparatus therefor
B01D 63/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
08Flat membrane modules
B01D 63/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
16Rotary, reciprocated or vibrated modules
CPC
B01D 21/262
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
26Separation of sediment aided by centrifugal force ; or centripetal force
262by using a centrifuge
B01D 61/08
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
08Apparatus therefor
B01D 61/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
18Apparatus therefor
B01D 63/087
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
08Flat membrane modules
087Single membrane modules
B01D 63/16
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
16Rotary, reciprocated or vibrated modules
B01L 2200/0684
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
2200Solutions for specific problems relating to chemical or physical laboratory apparatus
06Fluid handling related problems
0684Venting, avoiding backpressure, avoid gas bubbles
Applicants
  • INSTITUTO SUPERIOR TÉCNICO [PT]/[PT]
Inventors
  • FERNANDES, Vitor Manuel Geraldes
  • DE ALMEIDA SEMIÃO, Viriato Sérgio
  • RODRIGUES, Miguel Ângelo Joaquim
  • DA SILVA COMPLETO, Carlos Duarte
Agents
  • MOREIRA, Pedro Alves
Priority Data
10993224.02.2017PT
Publication Language Portuguese (PT)
Filing Language Portuguese (PT)
Designated States
Title
(EN) CENTRIFUGAL FILTRATION DEVICE AND METHOD FOR CONCENTRATING LIQUID MIXTURES
(FR) DISPOSITIF DE FILTRATION CENTRIFUGE ET PROCÉDÉ DE CONCENTRATION DE MÉLANGES LIQUIDES
(PT) DISPOSITIVO DE FILTRAÇÃO CENTRÍFUGA E MÉTODO PARA CONCENTRAÇÃO DE MISTURAS LÍQUIDAS
Abstract
(EN)
The present invention relates to a centrifugal filtration device and a method for concentrating, fractionating, purifying and/or desalinating small volumes of liquid samples, using reverse osmosis, nanofiltration or ultrafiltration membranes. The device comprises a shell, which comprises a sample chamber (102) with at least one ventilation orifice (123); a permeate chamber (106) with at least one ventilation orifice (145); a filtration chamber (104) with at least one semi-permeable membrane (105); a concentrate chamber (107) downstream of the filtration chamber (104); and at least one neck (103) connecting the sample chamber (102) to the filtration chamber (104) and the volume of which is less than the volume contained in the concentrate (107) and filtration (104) chambers. The device is particularly suited to performing nanofiltration or reverse osmosis on liquid samples with high osmotic pressures. Filtration takes place by means of the rotation of the centrifugal filtration device about a rotation shaft in a centrifuge. By using a long, narrow neck between the sample chamber, which is closer to the rotation shaft of the centrifuge, and the filtration chamber, which is further away from said rotation shaft, it is possible to maintain the pressure at high levels throughout the filtration process, which allows higher concentration factors to be achieved and the filtration time to be reduced.
(FR)
La présente invention concerne un dispositif de filtration centrifuge et un procédé pour la concentration, le fractionnement, la purification et/ou le dessalement d’échantillons liquides de petit volume, au moyen de membranes d’osmose inverse, par nanofiltration ou par ultrafiltration. Le dispositif comprend une enveloppe, laquelle comprend une chambre d’échantillon (102) présentant au moins un orifice de ventilation (123) ; une chambre de perméat (106) présentant au moins un orifice de centilation (145) ; une chambre de filtration (104) présentant au moins une membrane semi-perméable (105) ; une chambre de concentré (107) en aval de la chambre de filtration (104) ; et au moins un col (103) qui relie la chambre d’échantillon (102) à la chambre de filtration (104) et dont le volume est inférieur au volume contenu dans les chambres de concentré (107) et de filtration (104). Le dispositif est particulièrement approprié pour effectuer la nanofiltration ou l’osmose inverse d’échantillons liquides à des pressions osmotiques élevées. La filtration se produit sous l’action de la rotation du dispositif de filtration centrifuge autour d’un axe de rotation dans une centrifugeuse. En utilisant un col long et étroit entre la chambre d’échantillon, qui est plus proche de l’axe de rotation de la centrifugeuse, et la chambre de filtration, qui est plus éloignée dudit axe de rotation, on parvient à maintenir la pression à des niveaux élevés pendant tout le processus de filtration, ce qui permet d’obtenir de plus grands facteurs de concentration et de réduire le temps de filtration.
(PT)
A presente invenção refere-se a um dispositivo de filtração centrífuga e um método para concentração, fracionamento, purificação, e/ou dessalinização de amostras líquidas de pequeno volume, usando membranas de osmose inversa, nanofiltração ou ultrafiltração. O dispositivo compreende um invólucro, o qual compreende uma câmara de amostra (102) com pelo menos um orifício de ventilação (123); uma câmara de permeado (106) com pelo menos um orifício de ventilação (145); uma câmara de filtração (104) com pelo menos uma membrana semi-permeável (105); uma câmara de concentrado (107) a jusante da câmara de filtração (104); e pelo menos um gargalo (103) que liga a câmara de amostra (102) à câmara de filtração (104) e cujo volume é inferior ao volume contido nas câmaras de concentrado (107) e de filtração (104). O dispositivo é particularmente adequado para fazer nanofiltração ou osmose inversa de amostras líquidas com pressões osmóticas elevadas. A filtração ocorre sob a rotação do dispositivo de filtração centrífuga em torno de um eixo de rotação numa centrifugadora. Usando um gargalo longo e estreito entre a câmara de amostra, que está mais próxima do eixo de rotação da centrifugadora, e a câmara de filtração, que está mais afastada do referido eixo de rotação, consegue-se manter a pressão a níveis elevados durante todo o processo de filtração, o que permite atingir maiores fatores de concentração e reduzir o tempo de filtração.
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