FR3124091A1 - Simplified process for the release of carbon dioxide captured by the carbonation reaction of sodium carbonate - Google Patents
Simplified process for the release of carbon dioxide captured by the carbonation reaction of sodium carbonate Download PDFInfo
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- FR3124091A1 FR3124091A1 FR2106551A FR2106551A FR3124091A1 FR 3124091 A1 FR3124091 A1 FR 3124091A1 FR 2106551 A FR2106551 A FR 2106551A FR 2106551 A FR2106551 A FR 2106551A FR 3124091 A1 FR3124091 A1 FR 3124091A1
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- carbon dioxide
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- sodium carbonate
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 33
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 title claims description 7
- 238000006243 chemical reaction Methods 0.000 title claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 17
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 11
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 9
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- 239000008247 solid mixture Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical group [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/343—Heat recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/10—Preparation of bicarbonates from carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/12—Preparation of carbonates from bicarbonates or bicarbonate-containing product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
La présente invention décrit une méthode de relargage du gaz carbonique qui requiert un apport énergétique très réduit et permet la réutilisation de tous les réactifs employés dans le procédé. Cette invention présente plusieurs intérêts : coût limité, simplicité d’exploitation, possibilité d’être utilisé dans des installation de petite envergure (chauffage de copropriétés ; petite installation industrielles …) ou grande envergure (grandes industries centrale thermiques …), production d’un CO2 valorisable sec et concentré.The present invention describes a method for releasing carbon dioxide which requires a very low energy input and allows the reuse of all the reagents used in the process. This invention has several advantages: limited cost, simplicity of operation, possibility of being used in small-scale installations (heating of condominiums; small industrial installations, etc.) or large-scale (large thermal power plants, etc.), production of a Dry and concentrated recoverable CO2.
Description
La réaction entre le carbonate de sodium et le gaz carbonique capté dans les fumées de combustion, dans une solution aqueuse, produit du bicarbonate de sodium. Étant donné que le bicarbonate de sodium est un produit très utilisé, il n’y a généralement pas d étapes suivantes à sa production. Toutefois, il est possible de régénérer le dioxyde de carbone, via la décomposition thermique du bicarbonate, pour synthétiser d’autres produits.The reaction between sodium carbonate and the carbon dioxide captured in the combustion fumes, in an aqueous solution, produces sodium bicarbonate. Since sodium bicarbonate is a widely used product, there are usually no next steps to its production. However, it is possible to regenerate carbon dioxide, via the thermal decomposition of bicarbonate, to synthesize other products.
Vu sa faible solubilité dans l’eau, le bicarbonate de sodium précipite lorsqu’on augmente sa concentration avec l’ajout du gaz carbonique ; cette étape permet de séparer aisément le bicarbonate du reste de la solution qui contient du carbonate de sodium qui n’a pas réagi ainsi que le bicarbonate solubilisé. La décomposition et le relargage conséquent s’opèrent seulement sur le solide, nécessitant ainsi une moindre quantité d’énergie par rapport à d’autres méthodes de captage. Cela présente un autre avantage : la possibilité d’opérer le relargage du CO2dans un endroit différent de celui du captage, en transportant le bicarbonate sur le lieu d’utilisation du gaz carbonique.Given its low solubility in water, sodium bicarbonate precipitates when its concentration is increased with the addition of carbon dioxide; this step makes it possible to easily separate the bicarbonate from the rest of the solution which contains unreacted sodium carbonate as well as the dissolved bicarbonate. The decomposition and consequent release take place only on the solid, thus requiring less energy compared to other capture methods. This has another advantage: the possibility of carrying out the release of the CO 2 in a place different from that of the capture, by transporting the bicarbonate to the place of use of the carbon dioxide.
La vitesse de décomposition et la quantité d’énergie nécessaire dépendent de plusieurs facteurs. Parmi eux, les plus importants sont la température de la réaction et la granulométrie.The rate of decomposition and the amount of energy required depends on several factors. Among them, the most important are the reaction temperature and the particle size.
Pour éviter de diluer le gaz carbonique produit par la décomposition du bicarbonate, la présente invention opère dans des équipements étanches et dans un courant de gaz carbonique.To avoid diluting the carbon dioxide produced by the decomposition of the bicarbonate, the present invention operates in sealed equipment and in a stream of carbon dioxide.
La schématisation du procédé est la suivante :The diagram of the process is as follows:
- Le bicarbonate de sodium précipité dans la phase de captation est séparé de la solution par filtration.The sodium bicarbonate precipitated in the capture phase is separated from the solution by filtration.
- Si nécessaire, la quantité d’humidité du solide filtré est réduite à des valeurs inférieures à 15% via des méthodes mécaniques usuelles comme la centrifugation ou autres.If necessary, the amount of moisture in the filtered solid is reduced to values below 15% using the usual mechanical methods such as centrifugation or others.
- Si les étapes suivantes ne sont pas réalisées au même endroit, le bicarbonate doit être séché. Pour cela, il est envisageable d’utiliser un courant d’air chaud obtenu par le refroidissement des fumées via un échangeur placé en amont de la captation du CO2.If the following steps are not carried out in the same place, the baking soda must be dried. For this, it is possible to use a current of hot air obtained by cooling the flue gases via an exchanger placed upstream of the capture of the CO 2 .
- Le bicarbonate de sodium ainsi préparé est introduit dans un système de micronisation étanche qui utilise du gaz carbonique comme fluide de transport et de refroidissement. Le type de broyeur préféré est un broyeur à impact avec sélecteur de granulométrie. Le broyage permet de réduire le temps de décomposition du bicarbonate en réduisant la taille des particules et en augmentant, au même temps, la surface spécifique du produit (bicarbonate). La taille des particules après broyage est comprise entre 0 et 70 µm dont au moins 90% sont comprises entre 0 et 45 µm.The sodium bicarbonate thus prepared is introduced into a sealed micronization system which uses carbon dioxide as transport and cooling fluid. The preferred type of crusher is an impact crusher with a grain size selector. Grinding makes it possible to reduce the decomposition time of the bicarbonate by reducing the size of the particles and by increasing, at the same time, the specific surface of the product (bicarbonate). The size of the particles after grinding is between 0 and 70 μm, of which at least 90% are between 0 and 45 μm.
- A la sortie du broyeur, du gaz carbonique chauffé est ajouté au courant contenant le bicarbonate micronisé et le gaz carbonique froid. La quantité et la température du gaz ajouté sont calculées pour maintenir le mélange jusqu’à la filtration à une température comprise entre 100 et 250°C.At the outlet of the mill, heated carbon dioxide is added to the stream containing the micronized bicarbonate and the cold carbon dioxide. The quantity and temperature of the gas added are calculated to maintain the mixture until filtration at a temperature between 100 and 250°C.
- Le mélange gaz-solide est acheminé vers un filtre à manches dimensionné pour avoir une vitesse de filtration comprise entre 30 et 120 m3/m2.h, et pour un cycle de nettoyage complet compris entre 30 minutes et 24 h. Pour le nettoyage des manches également, le fluide à utiliser sera du gaz carbonique.The gas-solid mixture is routed to a bag filter sized to have a filtration rate of between 30 and 120 m 3 /m 2 .h, and for a complete cleaning cycle of between 30 minutes and 24 h. Also for cleaning the handles, the fluid to be used will be carbon dioxide.
- La sortie du solide des trémies du filtre sera équipée des dispositifs permettant de rendre le filtre étanche à l’air.The solid outlet from the filter hoppers will be equipped with devices to make the filter airtight.
- Le solide récupéré est du Carbonate de Sodium qui est réutilisé dans le cycle de captation du CO2.The recovered solid is Sodium Carbonate which is reused in the CO2 capture cycle.
-
Le gaz carbonique chaud en sortie du filtre est humide en raison de la présence de la vapeur générée par la réaction ; il passe dans un échangeur/condenseur qui le refroidit jusqu’à la condensation de l’eau. Une fois refroidi et séché, le gaz carbonique est divisé en différentes parties :
- La partie correspondant au CO2émis par la décomposition du bicarbonate est comprimée et stockée.
- Une seconde partie est envoyée au broyeur comme fluide de transport.
- Une petite partie est dirigée vers le compresseur qui est utilisé pour le nettoyage des manches du filtre.
- La partie restante passe dans l’échangeur utilisé pour le refroidissement du gaz en sortie du filtre et est réchauffée
- une nouvelle étape de chauffage est nécessaire ensuite via un système traditionnel ; Il s’agit de la seule étape qui requiert un apport d’énergie.
- Ce gaz carbonique chaud est réinjecté dans le courant contenant le bicarbonate micronisé et le gaz carbonique froid à la sortie du broyeur.
- The part corresponding to the CO 2 emitted by the decomposition of the bicarbonate is compressed and stored.
- A second part is sent to the mill as transport fluid.
- A small portion is directed to the compressor which is used for cleaning the filter bags.
- The remaining part passes through the exchanger used to cool the gas leaving the filter and is reheated
- a new heating step is then necessary via a traditional system; This is the only step that requires an input of energy.
- This hot carbon dioxide is reinjected into the stream containing the micronized bicarbonate and the cold carbon dioxide at the mill outlet.
- L’eau récupérée est utilisée pour la dissolution du carbonate de sodium provenant du filtre à manches, puis elle est mélangé aux eaux mères provenant de la filtration du bicarbonate de sodium après la phase de captation.The recovered water is used to dissolve the sodium carbonate from the bag filter, then it is mixed with the mother liquors from the filtration of the sodium bicarbonate after the capture phase.
Tout le procédé fonctionne en cycle fermé: la seule matière qui sort est le gaz carbonique capté prêt pour diverses utilisations.The whole process works in a closed cycle: the only material that comes out is the carbon dioxide captured ready for various uses.
Une fois le procédé pleinement opérationnel , les apports en énergie et en matériaux sont limités à la compensation des quelque pertes pendant le fonctionnement.Once the process is fully operational, the energy and material inputs are limited to compensating for the few losses during operation.
De préférence,Preferably,
- Le bicarbonate de sodium est finement broyé avant d’être chauffé et décomposé. Ceci permet de réduire le temps de réaction et de décomposer en totalité le produit, sans besoin de devoir augmenter la température.- Sodium bicarbonate is finely ground before being heated and broken down. This allows the reaction time to be reduced and the product to be completely decomposed, without the need to increase the temperature.
- Tout le procédé, à partir du broyage jusqu’au stockage du gaz carbonique, est opéré en circuit fermé, étanche, en absence d’air et sous courant de gaz carbonique.- The whole process, from grinding to carbon dioxide storage, is operated in a closed, sealed circuit, in the absence of air and under a stream of carbon dioxide.
- Le gaz carbonique est utilisé également comme fluide de refroidissement du broyeur et comme fluide de nettoyage des manches du filtre. Cela évite la dilution du gaz carbonique et simplifie les étapes suivantes- Carbon dioxide is also used as a coolant for the grinder and as a cleaning fluid for the filter sleeves. This avoids the dilution of carbon dioxide and simplifies the following steps
- Un filtre à manches est utilisé comme réacteur. Il prolonge le temps de contact et complète la décomposition du bicarbonate de sodium, il sépare efficacement le carbonate de sodium à recycler dans le procédé- A bag filter is used as reactor. It extends the contact time and completes the decomposition of the sodium bicarbonate, it effectively separates the sodium carbonate to be recycled in the process
- Un échangeur refroidit le gaz carbonique sortant du filtre et, à la fois, chauffe une partie du gaz pour le préparer à la phase de réaction et relargage du CO2- An exchanger cools the carbon dioxide coming out of the filter and, at the same time, heats part of the gas to prepare it for the reaction phase and release of CO2
- Une fois le procédé pleinement opérationnel, le système ne requiert que la compensation des pertes en énergie et matériaux.- Once the process is fully operational, the system only requires the compensation of energy and material losses.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106551A FR3124091A1 (en) | 2021-06-21 | 2021-06-21 | Simplified process for the release of carbon dioxide captured by the carbonation reaction of sodium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106551A FR3124091A1 (en) | 2021-06-21 | 2021-06-21 | Simplified process for the release of carbon dioxide captured by the carbonation reaction of sodium carbonate |
| FR2106551 | 2021-06-21 |
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| Publication Number | Publication Date |
|---|---|
| FR3124091A1 true FR3124091A1 (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2106551A Pending FR3124091A1 (en) | 2021-06-21 | 2021-06-21 | Simplified process for the release of carbon dioxide captured by the carbonation reaction of sodium carbonate |
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| Country | Link |
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| FR (1) | FR3124091A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715469A1 (en) * | 1977-09-06 | 1980-02-15 | Предприятие П/Я А-3732 | Method of producing calcined soda |
| US5325606A (en) * | 1992-12-23 | 1994-07-05 | Niro A/S | Process and apparatus for drying and calcining sodium bicarbonate |
| US20160082411A1 (en) * | 2013-09-30 | 2016-03-24 | Korea Electric Power Corporation | Solid carbon dioxide absorbent composition and solid carbon dioxide absorbent containing the same |
| CN112915760A (en) * | 2021-01-21 | 2021-06-08 | 绍兴越信环保科技有限公司 | Solid waste pyrolysis flue gas cooperative treatment system |
-
2021
- 2021-06-21 FR FR2106551A patent/FR3124091A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715469A1 (en) * | 1977-09-06 | 1980-02-15 | Предприятие П/Я А-3732 | Method of producing calcined soda |
| US5325606A (en) * | 1992-12-23 | 1994-07-05 | Niro A/S | Process and apparatus for drying and calcining sodium bicarbonate |
| US20160082411A1 (en) * | 2013-09-30 | 2016-03-24 | Korea Electric Power Corporation | Solid carbon dioxide absorbent composition and solid carbon dioxide absorbent containing the same |
| CN112915760A (en) * | 2021-01-21 | 2021-06-08 | 绍兴越信环保科技有限公司 | Solid waste pyrolysis flue gas cooperative treatment system |
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