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1. WO2020112592 - ELECTRODIALYTIC LIQUID DESICCANT DEHUMIDIFYING SYSTEM

Publication Number WO/2020/112592
Publication Date 04.06.2020
International Application No. PCT/US2019/062924
International Filing Date 25.11.2019
IPC
B01D 61/42 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
42Electrodialysis; Electro-osmosis
B01D 61/58 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
58Multistep processes
CPC
B01D 2258/06
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
06Polluted air
B01D 2311/25
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2311Details relating to membrane separation process operations and control
25Recirculation, recycling, e.g. recirculation of concentrate into the feed
B01D 53/1412
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
14by absorption
1412Controlling the absorption process
B01D 53/1425
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
14by absorption
1425Regeneration of liquid absorbents
B01D 53/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
14by absorption
18Absorbing units; Liquid distributors therefor
B01D 53/263
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
26Drying gases or vapours
263by absorption
Applicants
  • PALO ALTO RESEARCH CENTER INCORPORATED [US]/[US]
Inventors
  • BENEDICT, Michael
  • BEH, Eugene S.
  • KARATAY, Elif
Agents
  • MATKAITI, Erin Nichols
  • QUINN, Thomas F., Jr.
Priority Data
16/200,37626.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRODIALYTIC LIQUID DESICCANT DEHUMIDIFYING SYSTEM
(FR) SYSTÈME DE DÉSHUMIDIFICATION DE DÉSHYDRATANT LIQUIDE ÉLECTRODIALYTIQUE
Abstract
(EN)
Air flows across an air-liquid interface such that liquid desiccant flowing through the interface absorbs water from the air and is thereby diluted to form an output stream. The output stream is circulated through an electrodialytic stack having a central ionic exchange membrane and first and second outer ionic exchange membranes. A redox shuttle loop circulates around the first and second outer ionic exchange membranes. A voltage is applied across the electrodialytic stack, which regenerates the liquid desiccant.
(FR)
De l'air s'écoule à travers une interface air-liquide de telle sorte que le déshydratant liquide s'écoulant à travers l'interface absorbe l'eau de l'air et est ainsi dilué pour former un flux de sortie. Le flux de sortie est mis en circulation à travers un empilement électrodialytique ayant une membrane d'échange ionique centrale et des première et seconde membranes d'échange ionique externes. Une boucle de navette redox circule autour des première et seconde membranes d'échange ionique externes. Une tension est appliquée aux bornes de l'empilement électrodialytique, qui régénère le déshydratant liquide.
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