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1. WO2022115955 - ELECTROCHEMICAL METHOD, APPARATUS AND SYSTEM WITH IMPROVED PRODUCTION EFFICIENCY AND CO2 SEQUESTRATION

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Publication Number WO/2022/115955
Publication Date 09.06.2022
International Application No. PCT/CA2021/051724
International Filing Date 02.12.2021
IPC
C25B 15/08 2006.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
15Operating or servicing of cells
08Supplying or removing reactants or electrolytes; Regeneration of electrolytes
B01D 53/62 2006.1
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 or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
62Carbon oxides
C25B 1/04 2021.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
02of hydrogen or oxygen
04by electrolysis of water
C25B 15/023 2021.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
15Operating or servicing of cells
02Process control or regulation
023Measuring, analysing or testing during electrolytic production
C25B 15/031 2021.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
15Operating or servicing of cells
02Process control or regulation
023Measuring, analysing or testing during electrolytic production
025of electrolyte parameters
029Concentration
031pH
C01B 32/50 2017.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
32Carbon; Compounds thereof
50Carbon dioxide
CPC
B01D 2257/504
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
50Carbon oxides
504Carbon dioxide
B01D 53/323
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,
32by electrical effects other than those provided for in group B01D61/00
323by electrostatic effects or by high-voltage electric fields
B01D 53/326
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,
32by electrical effects other than those provided for in group B01D61/00
326in electrochemical cells
C25B 1/01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
01Products
C25B 1/04
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
01Products
02Hydrogen or oxygen
04by electrolysis of water
C25B 1/14
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
01Products
14Alkali metal compounds
Applicants
  • PLANETARY TECHNOLOGIES INC. [CA]/[CA]
Inventors
  • TAHMASEBI, Sadaf
  • RAU, Gregory Hudson
Agents
  • DONNELLY, Victoria
Priority Data
63/120,36802.12.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ELECTROCHEMICAL METHOD, APPARATUS AND SYSTEM WITH IMPROVED PRODUCTION EFFICIENCY AND CO2 SEQUESTRATION
(FR) PROCÉDÉ, APPAREIL ET SYSTÈME ÉLECTROCHIMIQUES À RENDEMENT DE PRODUCTION ET DE SÉQUESTRATION DE CO2 AMÉLIORÉS
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Abstract
(EN) The present invention describes ways of increasing the production efficiency of a salinewater electrolysis cell and of consuming CO2 gas and sequestering it from the atmosphere. This is achieved by the introduction of CO2 gas into the catholyte of the electrolysis, where reaction of the CO2 with the hydroxide ions present in the catholyte reduces the pH of the catholyte, thereby increasing production efficiency of the electrolysis cell. The preceding reaction forms bicarbonate and/or carbonate, thus sequestering the reactant CO2 gas from the atmosphere. The CO2 gas may be introduced either directly into the cathode area of the electrolysis cell, or into the electrolyte prior to its introduction into the electrolysis cell. Corresponding apparatus is also provided.
(FR) La présente invention concerne des moyens d'augmentation du rendement de production d'une cellule d'électrolyse d'eau saline et de la consommation de gaz CO2 et de sa séquestration à partir de l'atmosphère. Ceci est obtenu au moyen de l'introduction de gaz CO2 dans le catholyte de l'électrolyse, la réaction du CO2 avec les ions hydroxyde présents dans le catholyte réduisant le pH du catholyte, augmentant ainsi le rendement de production de la cellule d'électrolyse. La réaction précédente forme du bicarbonate et/ou du carbonate, ce qui permet de séquestrer le gaz CO2 réactif à partir de l'atmosphère. Le gaz CO2 peut être introduit soit directement dans la zone du cathode de la cellule d'électrolyse, soit dans l'électrolyte avant son introduction dans la cellule d'électrolyse. L'invention concerne également un appareil correspondant.
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