WO2022043637A1 - Method and facility for treating collected urine - Google Patents

Method and facility for treating collected urine Download PDF

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Publication number
WO2022043637A1
WO2022043637A1 PCT/FR2021/051488 FR2021051488W WO2022043637A1 WO 2022043637 A1 WO2022043637 A1 WO 2022043637A1 FR 2021051488 W FR2021051488 W FR 2021051488W WO 2022043637 A1 WO2022043637 A1 WO 2022043637A1
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Prior art keywords
gaseous
mixture
nitrogen
collect
liquid
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PCT/FR2021/051488
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French (fr)
Inventor
Libero MAZZONE
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Mazzone Libero
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Publication of WO2022043637A1 publication Critical patent/WO2022043637A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B01D5/0054—General arrangements, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/009—Collecting, removing and/or treatment of the condensate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/005—Black water originating from toilets
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/145—Feedstock the feedstock being materials of biological origin

Definitions

  • the present invention relates to a method and an installation for treating collected urine.
  • the present invention aims to effectively treat urine likely to be collected in order to eliminate it as such and avoid pollution or the negative effects of the spreading of urine of animal or human origin.
  • the subject of the invention is a process for treating collected urine, characterized in that the primary liquid formed by the collected urine is concentrated in order to eliminate the water therefrom by evaporation and obtain a concentrated liquid, hydrolyses the concentrated liquid to collect the mixture of gaseous components and a solid residue, the solid residue is collected, the gaseous mixture is cooled to condense the water vapor and separate the condensate and a residual gaseous mixture, the gaseous mixture is bubbled residual in an aqueous solution of potassium hydroxide to retain the carbon dioxide in the form of potassium bicarbonate and collect the gaseous nitrogen.
  • the method according to the invention makes it possible to effectively use the collected urine to obtain various components and residues serving as fertilizer for the hydrolysis residue, technical gases hydrogen (45, 48, 145, 148) or 02, or even potassium carbonate K2CO3 as fertilizer and various technical applications in the food sector and finally nitrogen either compressed or even in the liquid state for various applications such as fuel cells.
  • the gaseous nitrogen is compressed to obtain liquid nitrogen and the water vapor condensed from the hydrolysis gases is used as water to supply a membrane electrolysis cell.
  • the invention also relates to an installation for implementing this method, this installation comprising: an evaporator for concentrating the primary liquid formed by the collected urine and eliminating a large part of the water by evaporation and obtaining a concentrated liquid , a hydrolisor for the concentrated liquid and collecting the mixture of gaseous components and a solid residue, a cooler for cooling the gaseous mixture and condensing the water vapor to separate the condensate therefrom from the residual gaseous mixture, a bubbler containing potash and crossed by the flow of gas to retain the carbon dioxide in the form of potassium carbonate and collect the nitrogen, a compressor receiving the gaseous nitrogen to transform it into liquid nitrogen.
  • These pumps are adapted to the viscosity of the fluids, for example, diaphragm pumps for viscous liquids supplying the evaporator then the hydrolisor and centrifugal pumps for the evacuation of the condensate from the cooler to its use in the electrolysis cell membrane.
  • the power supply for the installation is provided either by the network or, preferably, by independent sources such as solar installations.
  • the subject of the invention is a method and an installation for treating urine.
  • the UC collected urine is preferably filtered to remove solid elements such as paper, sand or other particles before being concentrated in an evaporator by vapor release and obtaining a concentrated liquid LC.
  • El evaporation is done by limiting the temperature to 100°C to avoid degrading the components by excessive heating, in particular urea with a rest of water forming a pasty mass. This evaporation is carried out according to this example, discontinuously in batches.
  • the concentrated liquid is subjected to an E2 hydrolysis which produces a gaseous phase consisting of carbon dioxides, nitrogen and water vapor from the water residue of the concentrated liquid LC. This operation also results in residues R which are evacuated.
  • the gaseous phase of nitrogen N2, carbon dioxide CO2 and water vapor H2O passes through an E3 cooler to condense the water vapor which is extracted as condensate CD.
  • the remaining gas composed of N2 and CO2 passes through a bubbler E5 containing an aqueous solution of potassium hydroxide (KOH) through which the gas flow passes. Potash reacts with carbon dioxide CO2 to form potassium carbonate.
  • the potassium carbonate is recovered in the solid state at the bottom of the bath.
  • the nitrogen N2 which passes through the potash bath does not react with the potash and is then compressed E6 to obtain liquid nitrogen N2L.
  • the urea treatment process gives residues of hydrolysis R, used as fertilizer. It also gives pure CD water, which feeds a PEM E4 membrane electrolysis cell that produces hydrogen H2.
  • the E5 bubbler produces potassium carbonate K2L03 and finally nitrogen is recovered in the gaseous state or, preferably, in the liquid state N2L.
  • the potassium carbonate K2CO3 extracted from the bubbler is used in particular as a fertilizer for acid soils or as a fungicide against powdery mildew. It is also used as a food additive or as a gasifier for carbonated waters or various other industrial applications.
  • the installation for the implementation of this treatment process consists of an evaporator El to evaporate most of the water contained in the collected urine UC, a hydro lyser E2 which operates at a relatively high temperature, greater than 130° to hydrolyze urea.
  • the hydrolisor is connected to a cooler E3 to condense the water vapor from the hydrolysis gases.
  • the water CD from cooler E3 feeds an electrolysis cell with membrane E4 to obtain hydrogen H2 and oxygen 02 while the gases separated from the water by condensation of the water CD, then feed a bubbler E5 itself connected to an E6 nitrogen compressor.
  • the electricity supplying the E4 membrane electrolysis cell is, for example, provided by solar panels and the hydrogen obtained by this electrolysis is used separately from the oxygen or in combination with it in mobile motor equipment. to hydrogen.
  • the circulation of the liquids is ensured by pumps P1, P2 adapted to the viscosity of the liquid.
  • the water is circulated by a P3 centrifugal pump and the residues, which may be viscous, are evacuated by diaphragm pumps.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Physical Water Treatments (AREA)

Abstract

Disclosed is a method for treating collected urine, characterised in that it involves - concentrating (E1) the primary liquid formed by the collected urine in order to eliminate the water therefrom by evaporation and obtain a concentrated liquid (LC), - hydrolysing (E2) the concentrated liquid (LC) in order to collect the mixture of the gaseous components N2, CO2, H2O and a solid residue (R), - collecting the solid residue (R), - cooling (E3) the gaseous mixture (N2, CO2, H2O) in order to condense the water vapour and separate the condensate (CD) and a residual gaseous mixture (N2, CO2), - bubbling (E5) the residual gaseous mixture (N2, CO2) in an aqueous potash solution (KOH) in order to retain the carbon dioxide (CO2) in the form of potassium bicarbonate (K2CO3) and collect the gaseous nitrogen (N2).

Description

DESCRIPTION DESCRIPTION
Titre : Procédé et installation de traitement d’urine collectéeTitle: Process and installation for the treatment of collected urine
DOMAINE DE L’INVENTION FIELD OF THE INVENTION
La présente invention se rapporte à un procédé et une installation de traitement de l’urine collectée. The present invention relates to a method and an installation for treating collected urine.
ETAT DE LA TECHNIQUE STATE OF THE ART
Les procédés actuels de traitement ou d’utilisation de l’urine collectée, par exemple, des urines animales les utilisent comme engrais distribués en épandage sur des cultures. The current methods of treatment or use of the urine collected, for example, animal urine use them as fertilizer distributed by spreading on crops.
BUT DE L’INVENTION PURPOSE OF THE INVENTION
La présente invention a pour but de traiter efficacement de l’urine susceptible d’être collectée pour l’éliminer en tant que telle et éviter la pollution ou les effets négatifs de l’épandage d’urine d’origine animale ou humaine. The present invention aims to effectively treat urine likely to be collected in order to eliminate it as such and avoid pollution or the negative effects of the spreading of urine of animal or human origin.
EXPOSE ET AVANTAGES DE L’INVENTION DESCRIPTION AND ADVANTAGES OF THE INVENTION
A cet effet, l’invention a pour objet un procédé de traitement de l’urine collectée caractérisé en ce qu’on concentre le liquide primaire formé par l’urine collectée pour en éliminer l’eau par évaporation et obtenir un liquide concentré, on hydrolyse le liquide concentré pour recueillir le mélange des composants gazeux et un résidu solide, on recueille le résidu solide, on refroidit le mélange gazeux pour condenser la vapeur d’eau et séparer le condensât et un mélange gazeux résiduel, on fait barboter le mélange gazeux résiduel dans une solution aqueuse de potasse pour retenir le dioxyde de carbone sous la forme de bicarbonate de potassium et recueillir l’azote gazeux. To this end, the subject of the invention is a process for treating collected urine, characterized in that the primary liquid formed by the collected urine is concentrated in order to eliminate the water therefrom by evaporation and obtain a concentrated liquid, hydrolyses the concentrated liquid to collect the mixture of gaseous components and a solid residue, the solid residue is collected, the gaseous mixture is cooled to condense the water vapor and separate the condensate and a residual gaseous mixture, the gaseous mixture is bubbled residual in an aqueous solution of potassium hydroxide to retain the carbon dioxide in the form of potassium bicarbonate and collect the gaseous nitrogen.
Le procédé selon l’invention permet d’utiliser efficacement l’urine collectée pour obtenir différents composants et résidus servant d’engrais pour le résidu d’hydrolyse, de gaz techniques hydrogène (45, 48, 145, 148) ou 02, ou encore du carbonate de potassium K2CO3 comme engrais et différentes applications techniques dans le domaine alimentaire et enfin de l’azote soit comprimé, soit même à l’état liquide pour différentes applications telles que les piles à combustibles. Selon le procédé de l’invention, on comprime l’azote gazeux pour obtenir de l’azote liquide et la vapeur d’eau condensée des gaz d’hydrolyse est utilisé comme eau pour alimenter une cellule d’électrolyse à membrane.The method according to the invention makes it possible to effectively use the collected urine to obtain various components and residues serving as fertilizer for the hydrolysis residue, technical gases hydrogen (45, 48, 145, 148) or 02, or even potassium carbonate K2CO3 as fertilizer and various technical applications in the food sector and finally nitrogen either compressed or even in the liquid state for various applications such as fuel cells. According to the method of the invention, the gaseous nitrogen is compressed to obtain liquid nitrogen and the water vapor condensed from the hydrolysis gases is used as water to supply a membrane electrolysis cell.
L’invention a également pour objet une installation pour la mise en œuvre de ce procédé, cette installation comprenant : un évaporateur pour concentrer le liquide primaire formé par l’urine collectée et éliminer en grande partie l’eau par évaporation et obtenir un liquide concentré, un hydroliseur pour le liquide concentré et recueillir le mélange de composants gazeux et un résidu solide, un refroidisseur pour refroidir le mélange gazeux et condenser la vapeur d’eau pour en séparer le condensa du mélange gazeux résiduel, un barboteur contenant de la potasse et traversé par le flux de gaz pour retenir le dioxyde de carbone sous la forme de carbonate de potassium et recueillir l’azote, un compresseur recevant l’azote gazeux pour le transformer en azote liquide. The invention also relates to an installation for implementing this method, this installation comprising: an evaporator for concentrating the primary liquid formed by the collected urine and eliminating a large part of the water by evaporation and obtaining a concentrated liquid , a hydrolisor for the concentrated liquid and collecting the mixture of gaseous components and a solid residue, a cooler for cooling the gaseous mixture and condensing the water vapor to separate the condensate therefrom from the residual gaseous mixture, a bubbler containing potash and crossed by the flow of gas to retain the carbon dioxide in the form of potassium carbonate and collect the nitrogen, a compressor receiving the gaseous nitrogen to transform it into liquid nitrogen.
La circulation des fluides dans l’installation est assurée par des pompes permettant un fonctionnement par lots ou continu dans certaines étapes. The circulation of fluids in the installation is ensured by pumps allowing batch or continuous operation in certain stages.
Ces pompes sont adaptées à la viscosité des fluides, par exemple, des pompes à membrane pour les liquides visqueux alimentant l’évaporateur puis l’hydroliseur et des pompes centrifuges pour l’évacuation du condensât du refroidisseur vers son utilisation dans la cellule d’électrolyse à membrane. These pumps are adapted to the viscosity of the fluids, for example, diaphragm pumps for viscous liquids supplying the evaporator then the hydrolisor and centrifugal pumps for the evacuation of the condensate from the cooler to its use in the electrolysis cell membrane.
L’alimentation électrique de l’installation est assurée soit par le réseau, soit, de préférence, par des sources autonomes telles que des installations solaires. The power supply for the installation is provided either by the network or, preferably, by independent sources such as solar installations.
BREVE DESCRIPTION DES DESSINS BRIEF DESCRIPTION OF THE DRAWINGS
La présente invention sera décrite ci-après de manière plus détaillée à l’aide d’un exemple de réalisation d’un procédé de traitement de l’urine collectée, représenté dans les dessins annexés dans lesquels : [fig. 1] montre schématiquement les constituants d’un système de traitement d’urine collectée comprenant le procédé de traitement et installation de traitement The present invention will be described below in more detail with the aid of an exemplary embodiment of a method for treating collected urine, represented in the appended drawings in which: [fig. 1] schematically shows the components of a collected urine treatment system comprising the treatment method and treatment installation
DESCRIPTION D’UN MODE DE REALISATION DE L’INVENTIONDESCRIPTION OF AN EMBODIMENT OF THE INVENTION
Selon la figure, l’invention a pour objet un procédé et une installation de traitement d’urine. L’urine collectée UC est, de préférence, filtrée pour en éliminer les éléments solides tels que papier, sable ou autres particules avant d’être concentrée dans un évaporateur par dégagement de vapeur et obtention d’un liquide concentré LC. According to the figure, the subject of the invention is a method and an installation for treating urine. The UC collected urine is preferably filtered to remove solid elements such as paper, sand or other particles before being concentrated in an evaporator by vapor release and obtaining a concentrated liquid LC.
L’évaporation El se fait en limitant la température à 100°C pour éviter de dégrader les composants par une chauffe excessive, notamment l’urée avec un reste d’eau formant une masse pâteuse. Cette évaporation est faite selon cet exemple, de manière discontinue par lots.El evaporation is done by limiting the temperature to 100°C to avoid degrading the components by excessive heating, in particular urea with a rest of water forming a pasty mass. This evaporation is carried out according to this example, discontinuously in batches.
Ensuite, le liquide concentré est soumis à une hydrolise E2 qui produit une phase gazeuse se composant de dioxydes de carbone, de diazote et de vapeur d’eau provenant du résidu d’eau du liquide concentré LC. Cette opération se traduit également par des résidus R qui sont évacués. Then, the concentrated liquid is subjected to an E2 hydrolysis which produces a gaseous phase consisting of carbon dioxides, nitrogen and water vapor from the water residue of the concentrated liquid LC. This operation also results in residues R which are evacuated.
La phase gazeuse de diazote N2, de gaz carbonique CO2 et de vapeur d’eau H2O passe dans un refroidisseur E3 pour condenser la vapeur d’eau qui est extraite comme condensât CD. Le gaz restant composé de N2 et CO2 passe dans un barboteur E5 contenant une solution aqueuse de potasse (KOH) que traverse le flux de gaz. La potasse réagit avec le dioxyde de carbone CO2 pour former du carbonate de potassium. Le carbonate de potassium est récupéré à l’état solide au fond du bain.The gaseous phase of nitrogen N2, carbon dioxide CO2 and water vapor H2O passes through an E3 cooler to condense the water vapor which is extracted as condensate CD. The remaining gas composed of N2 and CO2 passes through a bubbler E5 containing an aqueous solution of potassium hydroxide (KOH) through which the gas flow passes. Potash reacts with carbon dioxide CO2 to form potassium carbonate. The potassium carbonate is recovered in the solid state at the bottom of the bath.
L’azote N2 qui traverse le bain de potasse ne réagit pas avec la potasse et est ensuite comprimé E6 pour obtenir de l’azote liquide N2L. The nitrogen N2 which passes through the potash bath does not react with the potash and is then compressed E6 to obtain liquid nitrogen N2L.
Le procédé de traitement de l’urée donne des résidus de l’hydrolise R, utilisés comme engrais. Il donne également de l’eau pure CD, qui alimente une cellule d’électrolyse à membrane PEM E4 qui produit de l’hydrogène H2. The urea treatment process gives residues of hydrolysis R, used as fertilizer. It also gives pure CD water, which feeds a PEM E4 membrane electrolysis cell that produces hydrogen H2.
Le barboteur E5 produit du carbonate de potassium K2L03 et enfin on récupère de l’azote à l’état gazeux ou, de préférence, à l’état liquide N2L.The E5 bubbler produces potassium carbonate K2L03 and finally nitrogen is recovered in the gaseous state or, preferably, in the liquid state N2L.
Le carbonate de potassium K2CO3 extrait du barboteur est utilisé notamment comme engrais pour des sols acides ou comme fongicide contre l’oïdium. Il est également utilisé comme additif alimentaire ou comme gazéifiant pour des eaux gazeuses ou encore diverses autres applications industrielles. The potassium carbonate K2CO3 extracted from the bubbler is used in particular as a fertilizer for acid soils or as a fungicide against powdery mildew. It is also used as a food additive or as a gasifier for carbonated waters or various other industrial applications.
L’installation pour la mise en œuvre de ce procédé de traitement se compose d’un évaporateur El pour évaporer la plus grande partie de l’eau contenue dans l’urine collectée UC, un hydro lyseur E2 qui fonctionne à une température relativement élevée, supérieure à 130° pour hydroliser l’urée. L’hydroliseur est relié à un refroidisseur E3 pour condenser la vapeur d’eau des gaz d’hydrolyse. L’eau CD du refroidisseur E3 alimente une cellule d’électrolyse à membrane E4 pour obtenir de l’hydrogène H2 et de l’oxygène 02 alors que les gaz séparés de l’eau par condensation de l’eau CD, alimentent ensuite un barboteur E5 relié lui-même à un compresseur d’azote E6. The installation for the implementation of this treatment process consists of an evaporator El to evaporate most of the water contained in the collected urine UC, a hydro lyser E2 which operates at a relatively high temperature, greater than 130° to hydrolyze urea. The hydrolisor is connected to a cooler E3 to condense the water vapor from the hydrolysis gases. The water CD from cooler E3 feeds an electrolysis cell with membrane E4 to obtain hydrogen H2 and oxygen 02 while the gases separated from the water by condensation of the water CD, then feed a bubbler E5 itself connected to an E6 nitrogen compressor.
L’électricité alimentant la cellule d’électrolyse à membrane E4 est, par exemple, fournie par des panneaux solaires et l’hydrogène obtenu par cette électrolyse est utilisé séparément de l’oxygène ou en combinaison avec celui-ci dans des équipements mobiles à moteur à hydrogène.The electricity supplying the E4 membrane electrolysis cell is, for example, provided by solar panels and the hydrogen obtained by this electrolysis is used separately from the oxygen or in combination with it in mobile motor equipment. to hydrogen.
La circulation des liquides est assurée par des pompes Pl, P2 adaptées à la viscosité du liquide. L’eau est mise en circulation par pompe centrifuge P3 et les résidus qui peuvent être visqueux sont évacués par des pompes à membrane. The circulation of the liquids is ensured by pumps P1, P2 adapted to the viscosity of the liquid. The water is circulated by a P3 centrifugal pump and the residues, which may be viscous, are evacuated by diaphragm pumps.
NOMENCLATURE DES ELEMENTS PRINCIPAUXNOMENCLATURE OF THE MAIN ELEMENTS
El . Etape d’évaporation / évaporateur El. Evaporation stage / evaporator
E2. Etape d’hydrolyse / hydroliseur E2. Hydrolysis step / hydrolizer
E3. Etape de refroidissement / refroidisseur E4 Etape d’électrolyse / Cellule d’électrolyse à membraneE3. Cooling stage / chiller E4 Electrolysis stage / Membrane electrolysis cell
E5. Barbotage / barboteur E5. Bubbler / bubbler
E6. Etape de compression / compresseur E6. Compression stage / compressor

Claims

REVENDICATIONS
1. Procédé de traitement de l’urine collectée caractérisé en ce qu’1. Process for treating collected urine characterized in that
- on concentre (El) le liquide primaire formé par l’urine collectée pour en éliminer l’eau par évaporation et obtenir un liquide concentré (LC),- the primary liquid formed by the collected urine is concentrated (El) to eliminate the water by evaporation and obtain a concentrated liquid (LC),
- on hydrolyse (E2) le liquide concentré (LC) pour recueillir le mélange des composants gazeux (N2, CO2, H2O) et un résidu solide (R), - the concentrated liquid (LC) is hydrolyzed (E2) to collect the mixture of gaseous components (N2, CO2, H2O) and a solid residue (R),
- on recueille le résidu solide (R), - the solid residue (R) is collected,
- on refroidit (E3) le mélange gazeux (N2, CO2, H2O) pour condenser la vapeur d’eau et séparer le condensât (CD) et un mélange gazeux résiduel (N2, CO2), - the gaseous mixture (N2, CO2, H2O) is cooled (E3) to condense the water vapor and separate the condensate (CD) and a residual gaseous mixture (N2, CO2),
- on fait barboter (E5) le mélange gazeux résiduel (N2, CO2) dans une solution aqueuse de potasse (KOH) pour retenir le dioxyde de carbone (CO2) sous la forme de bicarbonate de potassium (K2CO3) et recueillir l’azote gazeux (N2). - the residual gaseous mixture (N2, CO2) is bubbled (E5) in an aqueous solution of potash (KOH) to retain the carbon dioxide (CO2) in the form of potassium bicarbonate (K2CO3) and collect the gaseous nitrogen (N2).
2. Procédé de traitement selon la revendication 1 , caractérisé en ce qu’on comprime l’azote gazeux (N2) pour obtenir de l’azote liquide (N2L). 2. Treatment process according to claim 1, characterized in that the gaseous nitrogen (N2) is compressed to obtain liquid nitrogen (N2L).
3. Procédé selon la revendication 1, caractérisé en ce qu’on utilise la vapeur d’eau condensée (CD) des gaz d’hydrolyse pour alimenter une cellule d’électrolyse (E4) 3. Method according to claim 1, characterized in that the condensed water vapor (CD) of the hydrolysis gases is used to supply an electrolysis cell (E4)
4. Installation pour le traitement d’urine collectée selon l’une quelconque des revendications 1 à 3, caractérisée en ce qu’elle comprend un évaporateur (E 1 ) pour concentrer le liquide primaire formé par l’urine collectée et éliminer en grande partie l’eau par évaporation et obtenir un liquide concentré (L), 4. Installation for the treatment of urine collected according to any one of claims 1 to 3, characterized in that it comprises an evaporator (E 1) to concentrate the primary liquid formed by the collected urine and eliminate a large part water by evaporation and obtain a concentrated liquid (L),
- un hydroliseur (E2) pour le liquide concentré (LC) et recueillir le mélange de composants gazeux (N2, CO2, H2O) et un résidu solide (R),- a hydrolisor (E2) for the concentrated liquid (LC) and collect the mixture of gaseous components (N2, CO2, H2O) and a solid residue (R),
- un refroidisseur (E3) pour refroidir le mélange gazeux (N2, CO2, H2O) et condenser la vapeur d’eau pour en séparer le condensa (CD) du mélange gazeux résiduel (N2, CO2), - a cooler (E3) to cool the gas mixture (N2, CO2, H2O) and condense the water vapor to separate the condensate (CD) from the residual gas mixture (N2, CO2),
- un barboteur (E2) contenant de la potasse et traversé par le flux de gaz (N2CO2) pour retenir le dioxyde de carbone (CO2) sous la forme de carbonate de potassium (K2CO3) et recueillir l’azote (N2), - a bubbler (E2) containing potash and crossed by the gas flow (N2CO2) to retain carbon dioxide (CO2) in the form of potassium carbonate (K2CO3) and collect nitrogen (N2),
- un compresseur recevant l’azote gazeux (N2) pour le transformer en azote liquide (N2L). - a compressor receiving gaseous nitrogen (N2) to transform it into liquid nitrogen (N2L).
PCT/FR2021/051488 2020-08-31 2021-08-26 Method and facility for treating collected urine WO2022043637A1 (en)

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US6471873B1 (en) * 2000-01-26 2002-10-29 Bernard Greenberg Electrolytic process and apparatus for purifying contaminated aqueous solutions and method for using same to remediate soil
WO2018114768A1 (en) * 2016-12-20 2018-06-28 Pro Aqua Diamantelektroden Produktion Gmbh & Co Kg Method for carrying out gas scrubbing by means of an electrolyte solution
CN111186960A (en) * 2020-01-09 2020-05-22 湖南沃工环境科技有限公司 Livestock and poultry manure sewage treatment process

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US6471873B1 (en) * 2000-01-26 2002-10-29 Bernard Greenberg Electrolytic process and apparatus for purifying contaminated aqueous solutions and method for using same to remediate soil
WO2018114768A1 (en) * 2016-12-20 2018-06-28 Pro Aqua Diamantelektroden Produktion Gmbh & Co Kg Method for carrying out gas scrubbing by means of an electrolyte solution
CN111186960A (en) * 2020-01-09 2020-05-22 湖南沃工环境科技有限公司 Livestock and poultry manure sewage treatment process

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