WO2013065880A1 - 건식 이산화탄소 포집 공정용 아민 또는 그 화합물을 포함하는 고체 이산화탄소 흡수제 및 그 제조방법 - Google Patents
건식 이산화탄소 포집 공정용 아민 또는 그 화합물을 포함하는 고체 이산화탄소 흡수제 및 그 제조방법 Download PDFInfo
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- WO2013065880A1 WO2013065880A1 PCT/KR2011/008196 KR2011008196W WO2013065880A1 WO 2013065880 A1 WO2013065880 A1 WO 2013065880A1 KR 2011008196 W KR2011008196 W KR 2011008196W WO 2013065880 A1 WO2013065880 A1 WO 2013065880A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3291—Characterised by the shape of the carrier, the coating or the obtained coated product
- B01J20/3295—Coatings made of particles, nanoparticles, fibers, nanofibers
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- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28011—Other properties, e.g. density, crush strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28061—Surface area, e.g. B.E.T specific surface area being in the range 100-500 m2/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/3272—Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3425—Regenerating or reactivating of sorbents or filter aids comprising organic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
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- 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
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- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Definitions
- the present invention relates to a solid carbon dioxide absorbent comprising an amine or a compound thereof and a method for producing the same.
- CO 2 capture and storage to capture and store carbon dioxide from a large amount of CO 2 sources, such as coal gas
- synthetic gas streams commonly called fuel gas
- CO2 capture technology using dry regenerative absorbents which has been recognized as an innovative technology for efficiently and economically capturing carbon dioxide from a large amount of flue gas, is a solid particle called a dry regenerative CO 2 absorber instead of a liquid solvent used in conventional wet chemical absorption methods.
- a dry regenerative CO 2 absorber instead of a liquid solvent used in conventional wet chemical absorption methods.
- the solid absorbent can be reused continuously by repeating the reaction and regeneration with carbon dioxide, and the fluidized bed process is applied, so that the installation area is small, the heat transfer characteristics are excellent, the waste water hardly occurs, the corrosion problem is low, and the low cost It is possible to use a variety of materials, and has a great potential for sustainable growth compared to other technologies in many aspects such as design flexibility of process design, eco-friendliness, low energy absorption process applicability, and high efficiency CO 2 absorption (absorption capacity and reactivity). .
- the above patents are mainly related to active materials, supports, combinations of inorganic binders and organic binders, combinations of active materials and supports, or the active ingredients themselves, or for applications in completely different applications, and are prepared and supported by physical mixing.
- the production method is different from the production method, which is not suitable for producing the absorbent in large quantities.
- the solid absorbent particles are not suitable for the process of continuously collecting and separating carbon dioxide while continuously circulating between two reactors for absorption and regeneration of the fluidized bed process. Therefore, it is inefficient to apply to industrial processes that emit a large amount of carbon dioxide, such as power plants, steel, refinery and cement industries.
- the present invention provides an absorbent that can be regenerated at 180 ° C., and the absorbent has been proposed for a method of spray-drying and forming a raw material composed of an active ingredient of an alkali metal and an alkaline earth metal carbonate compound and various supports.
- CO 2 can be removed by an absorbent having an amine compound on a solid porous support.
- US5492683 and US5876488 propose a carbon dioxide solid adsorbent carrying a liquid amine compound reacting at room temperature, and US4810266 suggests the removal of CO 2 in a normal temperature region using a solid adsorbent carrying an amine compound in a carbon body.
- WO2004 / 054705 discloses a solid absorbent for capturing CO 2 by an amine compound that is physically adsorbed or chemically linked to the surface of mesoporous silica
- US 6908497 and US6547854 produce a solid absorbent supporting an amine compound on a surface-treated support. The method is described.
- KR10-2011-0006073 discloses a method for preparing a porous silica having a hierarchical structure of micro and mesopores, and a CO 2 absorbent supporting an amine compound in the prepared porous silica.
- patents related to solid absorbents (or adsorbents) including amine compounds are mainly related to absorbents or active ingredients themselves carrying an active ingredient on a support, and solid absorbent particles continuously move between two reactors for absorption and regeneration. It is not suitable for the fluidized bed or high speed fluidized bed dry capture process that captures and separates carbon dioxide, but it can be applied to capture CO 2 in an efficient and economic way in gas streams with low CO 2 partial pressure such as flue gas. There is a need for technology to efficiently and economically collect carbon dioxide from a large amount of flue gas.
- the solid absorbent applied to the dry capture process consisting of the absorption reactor and the regeneration reactor has a high CO 2 absorption capacity and a fast reaction rate in the continuous circulation of the absorption reactor and the regeneration reactor, and the exhaust gas or gas Airflow conditions are met, CO 2 can be removed to low concentrations, and the collected CO 2 must meet the conditions for separation into high purity CO 2 during regeneration.
- the solid absorbent should have low chemical wear loss due to physical abrasion such as particle collisions, friction, breakage or cracking and volume expansion / contraction due to chemical reactions during the cycle between the two reactors.
- a porous carrier that can satisfy the physical and chemical requirements of the absorbent by using a spray-drying molding method was prepared, and an absorbent carrying an amine compound on the carrier was prepared.
- (D) provides a carbon dioxide absorbent manufacturing method comprising the step of supporting the amine compound in the pores of the prepared carrier.
- the absorbent according to the present invention selectively reacts with the active component developed in the microparticles and mesopores developed in the carrier particles and carbon dioxide to capture carbon dioxide and at the same time satisfies the physical properties of the fluidized bed or high speed fluidized bed dry capture process (hereinafter, dry capture) It can be used repeatedly for continuous application.
- the absorbent according to the present invention may be a physical abrasion such as collision, friction, fracture or cracking, volume expansion due to chemical reaction, or the like in a fluidized or fast fluidized bed reactor, or It can overcome the chemical wear caused by shrinkage.
- the mass production is easy, the production yield is high, the cost is low, and the advantages of satisfying the characteristics of the particles satisfying the fluidized bed requirements when supporting the amine compound There is this.
- the absorption and regeneration reactions are possible in the low temperature region (below 100 °C), it can be expected to reduce the CO 2 capture cost compared to the dry capture process using a conventional absorbent using an alkali metal and alkaline earth metal compound as the active material. .
- Example 1 is a SEM photograph of the support A prepared by Step 1 of Example 1 of the present invention.
- Example 2 is a SEM photograph of the A-PEI prepared by Example 1 of the present invention.
- Example 3 is a graph showing the results of TGA absorption capacity evaluation of A-PEI prepared by Example 1 of the present invention.
- FIG. 4 is an SEM photograph of support B and B-PEI prepared by Comparative Example 1.
- FIG. 5 is a graph showing the distribution of micropores and mesopores of support A and support B.
- FIG. 7 is a graph showing carbon dioxide adsorption isotherms and adsorption capacity of the absorbent prepared in Example 2.
- FIG. 8 is a graph showing the results of five cycles of continuous absorbency of the absorbent prepared in Example 3.
- FIG. 9 is a graph showing the evaluation of absorbency of the absorbent prepared in Comparative Example 3.
- FIG. 12 is a graph showing the TGA weight gain results for each regeneration temperature of the absorbents prepared in Example 4 and Comparative Example 4.
- FIG. 12 is a graph showing the TGA weight gain results for each regeneration temperature of the absorbents prepared in Example 4 and Comparative Example 4.
- the present invention comprises the steps of (A) preparing a slurry composition comprising a support composition and a solvent containing a support and an inorganic binder;
- (D) relates to a carbon dioxide absorbent manufacturing method comprising the step of supporting the amine compound in the pores of the prepared carrier.
- Step (A) of the present invention is a step of preparing a slurry composition comprising a carrier composition and a solvent.
- the carrier composition in the present invention includes a support and an inorganic binder.
- the support forms micro and mesoporous structures in the supported carrier particles so that the active amine compound is well dispersed in the carrier particle pores, thereby increasing the reactivity with carbon dioxide and adsorbing or absorbing moisture required for the reaction. .
- the said support has a large specific surface area, and the kind in particular is not restrict
- calcium oxide (CaO), zinc oxide (ZnO) or magnesium oxide (MgO) may be used as the basic support, and carbon molecular sieve or carbon nano tubes, magnesium and aluminum may be used as the neutral support.
- the support components may be used alone or in combination of two or more.
- the support may include 20 to 85 parts by weight, and preferably 40 to 80 parts by weight based on the total weight of the support composition. If the content is less than 20 parts by weight, there is a risk that the physical strength is lowered, if the content is more than 85 parts by weight, the carrier to be produced exhibits the same physical properties as 85 parts by weight or less, there is a fear that the manufacturing cost increases.
- the inorganic binder is a material that improves the bonding strength between the constituent raw materials of the support to impart mechanical strength to give strength to the absorbent for a long time without loss of wear.
- the type of the inorganic binder in the present invention for example, one or more selected from the group consisting of cements, clays, ceramics, and the like may be used.
- bentonite or kaolin may be used as a specific kind of the clay
- alumina sol, silica sol, or boehmite may be used as a specific kind of ceramics
- calcium may be used as a specific kind of cement.
- Silicates, calcium aluminates, and the like can be used.
- the inorganic binder components may be used in combination of one or two or more.
- the inorganic binder may include 5 to 50 parts by weight, and preferably 10 to 30 parts by weight based on the total weight of the carrier composition. If the content is less than 5 parts by weight, physical properties may be reduced by lowering the bonding strength between the raw materials (support and inorganic binder). If the content is more than 50 parts by weight, the amine compound not supported in the pores may contain The pore opening may be blocked to reduce the reaction with carbon dioxide, thereby reducing the carbon dioxide absorption capacity.
- step (A) of the present invention a slurry composition is prepared by mixing the carrier composition and the solvent described above.
- the kind of the solvent is not particularly limited, and a solvent generally used in this field may be used. Specifically, water or alcohols such as methanol and ethanol can be used, and preferably water is used.
- the support composition may be included in an amount of 15 to 60 parts by weight based on the total weight of the slurry composition. If the content of the carrier composition is less than 15 parts by weight, the amount of the slurry for preparing the absorbent may increase, ultimately reducing the absorbent production efficiency. If the content is greater than 60 parts by weight, the viscosity of the slurry due to the increase in the concentration of the slurry There is a fear that the fluidity decreases due to the increase, making it difficult to carry out spray drying.
- the slurry composition according to the present invention may further include an additive to impart plasticity and dispersibility in the process of mixing the support composition with water, which is a solvent. That is, at least one organic additive selected from the group consisting of a dispersant, an antifoaming agent, and an organic binder may be further included for controlling the homogenization of the support composition, the concentration of the slurry, the viscosity, the stability, the flowability and the strength and the density. .
- a dispersant is used to prevent agglomeration between particles in the grinding process, which will be described below. That is, in the grinding process for controlling the particle size of the raw materials constituting the carrier, the dispersant may be used to prevent the reduction of the grinding efficiency due to the agglomeration of the pulverized fine powder particles.
- the type of dispersant in the present invention for example, at least one selected from the group consisting of anionic dispersants, cationic dispersants, amphoteric dispersants and nonionic dispersants may be used, and preferably anionic dispersants may be used.
- anionic dispersant polycarboxylic acid, polycarboxylic acid amine, polycarboxylic acid amine salt, polycarboxylic acid soda salt, or the like may be used.
- a fluorine-based surfactant may be used as the nonionic dispersant.
- the anionic dispersant may be used in an amount of 0.1 to 10 parts by weight based on a solid raw material, and a nonionic dispersant may be used in an amount of 0.01 to 0.3 parts by weight based on a solid raw material. In this range, the dispersion effect of the particles is excellent.
- a defoamer may be used to remove bubbles in the slurry to which the dispersant and the organic binder are applied.
- a metal soap type and polyester type nonionic surfactant can be used, for example.
- the antifoaming agent may be used in an amount of 0.01 to 0.2 parts by weight based on the solid raw material. If the amount of the antifoaming agent is too small, there is a fear that bubbles are generated during the slurry manufacturing process to obtain a spherical shape during spray drying, and if the amount of the antifoaming agent is too large, harmful gas may occur during the firing process.
- the amount of the antifoaming agent can be adjusted according to the amount of bubbles generated.
- the organic binder imparts plasticity and fluidity to the slurry and ultimately gives strength to the solid particles formed during spray drying, thereby facilitating handling of the particles before drying and firing.
- the type of the organic binder for example, one or more selected from the group consisting of polyvinyl alcohol, polyglycol, and methyl cellulose may be used.
- the content of the organic binder is not particularly limited. For example, 0.5 to 5 parts by weight may be used based on the solid raw material. If the content is less than 0.5 parts by weight, it may be difficult to maintain the spherical shape before drying and firing due to a decrease in the bonding strength of the spray-dried solid particles, if the content exceeds 5 parts by weight of the final material There is a risk of deterioration in performance.
- a pH adjusting agent may be further added to adjust the pH of the slurry composition.
- organic amine, aqueous ammonia, etc. can be used, for example.
- step (A) after performing step (A), stirring and grinding the prepared slurry composition; And removing the foreign matter in the stirred and pulverized slurry composition.
- the stirring may be performed using a stirrer in the process of adding the components included in the slurry composition and / or in a state where all of them are added.
- the type of agitator used may be, for example, a general mechanical stirrer, a double helix mixer, a high speed emulsifier, a homogenizer, a high shear blender, or an ultrasonic homogenizer. Ultrasonic homogenizer and the like can be used, and a stirrer can be selectively used depending on the amount of raw material to be added.
- the raw material particles (support and inorganic binder) can be more homogeneously dispersed in the slurry. Additional defoamers and dispersants may be added as needed during the grinding, and more stable slurry compositions may be prepared using pH adjusters.
- a wet milling method may be used to improve the grinding effect and to solve problems such as blowing out of particles generated during dry grinding.
- Grinding is performed using a grinder, in which the type of the grinder used, for example, roller mill, ball mill, attrition mill, planter mill mill, bead mill, or high energy bead mill.
- a high energy bead mill can be preferably used.
- the filling amount of the bead (grind), which is the pulverization medium is preferably 60% to 80% based on the volume of the grinding container when grinding and homogenizing.
- Beads, which are grinding media may use Yttria stabilized zirconia beads, which are excellent in strength and stability.
- the size of the ball is preferably 0.3 mm to 1.25 mm.
- Grinding in the present invention can be carried out two or more times to produce a homogeneous slurry composition.
- Dispersing agent and antifoaming agent may be added to the slurry (mixture) to carry out the next grinding after grinding to adjust the fluidity of the slurry composition to facilitate the transfer through the pump.
- an organic binder may be added prior to final grinding to uniformly mix the slurry composition.
- the completed slurry composition can be adjusted to characteristics such as concentration and viscosity using a dispersant, antifoaming agent or additional solvent.
- the grinding process may be omitted.
- the step of removing the foreign matter it is possible to remove the foreign matter or agglomerated raw materials that may cause the nozzle clogging during spray molding. Removal of the foreign matter may be carried out through sieving.
- Step (B) in the present invention is a step of spray drying the slurry composition to prepare a solid particle.
- Spray drying of the slurry composition in this step can be carried out using a spray dryer.
- the slurry composition may be transferred to a spray dryer using a pump, and then the transferred slurry composition may be sprayed into the spray dryer through a pump to form solid particles.
- the viscosity of the slurry composition transferable to the pump is not particularly limited, but may be sprayed at 300 cP or more.
- the operating conditions of the spray dryer for molding solid particles in the spray dryer in the present invention may apply the operating conditions generally used in this field.
- the spray method of the slurry composition is not particularly limited, and for example, a countercurrent spray method may be used in which the spray nozzle is sprayed in a direction opposite to the flow of drying air. That is, in order to control the average particle size of the solid particles in the spray dryer, a countercurrent spray method may be used in which a pressurized nozzle is installed at the bottom of the dryer to increase the residence time of the particles sprayed in the dryer.
- the shape, particle size, particle distribution and structure of the absorbent of the slurry composition are affected by the concentration, viscosity, dispersion degree, injection pressure of the slurry, injection amount, drying capacity and temperature of the spray dryer, the spray dryer
- the structure and spray form of can be adjusted to suit.
- the injection pressure of the spray dryer may be 5 to 15 kg / cm2
- the inner diameter of the pressure nozzle is 0.4 to 1.6 mm
- the inlet temperature of the dryer 230 to 300 °C and the outlet temperature may be 90 to 160 °C.
- the particle size distribution of the solid particles prepared in the step is 30 to 350 ⁇ m, and the average particle size is 70 to 180 ⁇ m.
- step (C) is a step of preparing a carrier by dry firing the solid particles prepared in step (B).
- Drying in the present invention can be carried out by drying the solid particles in a reflux dryer of 110 to 150 °C or more for 2 hours. At this time, drying is performed in an air atmosphere.
- the dried particles are placed in a high temperature firing furnace to raise the final firing temperature to 350 to 1000 ° C. at a rate of 0.5 to 10 ° C./min, and then fired for 2 hours or more.
- the stagnation section of each 30 minutes or more at a stagnation temperature of two or more steps up to the final firing temperature may be fired.
- firing may use a firing furnace such as a muffle furnace, a tubular furnace, or a kiln.
- a firing furnace such as a muffle furnace, a tubular furnace, or a kiln.
- the firing may be performed in an atmosphere of air, nitrogen, helium, hydrogen, water, or reducing gas, and the flow rate of the atmospheric gas may be 60 ml / min or more.
- the organic additives (dispersant, antifoaming agent and organic binder) introduced during the preparation of the slurry by the firing are burned, and the strength of the particles is improved by bonding between the raw materials.
- the carrier finally prepared by step (C) has a BET surface area of 50 to 500 m 2 / g, preferably 150 to 400 m 2 / g. Supporting the amine compound described below in the BET surface area of the above range is easy.
- step (D) is a step of supporting the amine compound on the support. By this step, the amine compound is uniformly dispersed in the pores of the carrier.
- step (D) may include dissolving the amine compound in a solvent; And mixing the step carrier with the solvent and stirring.
- the type of amine compound used in step (D) may be used without limitation amine compounds used in the art, specifically, monoethanolamine (MEA), tetrastyrene-pentaamine (TEPA) and triethylenetetraamine ( Primary amine compounds including TETA), piperazine-based cyclic secondary amine compounds including piperazine and 2-piperidine ethanol and the like, 1- (2-hydroxyethyl) piperazine and the like
- MEA monoethanolamine
- TEPA tetrastyrene-pentaamine
- PES triethylenetetraamine
- An amine compound polymer including cyclic tertiary amine compound or polyethyleneimine (PEI) can be used.
- the amine compound may include 5 to 70 parts by weight based on the total weight of the carrier, preferably 10 to 50 parts by weight. If the content is less than 5 parts by weight, the carbon dioxide absorption capacity may be lowered. If the content is more than 70 parts by weight, the amine compound may be used in an excessive amount to block pores of the carrier to reduce the reaction with carbon dioxide.
- the solvent may be distilled water, an organic solvent or a mixture thereof, and alcohol, methanol, ethanol and ethanol may be used.
- Stirring may be performed at 30 to 80 ° C., and after stirring, evaporation to dryness at 60 to 100 ° C. or filtering may be performed by filtering solid particles (carrier carrying an amine compound) using filter paper and then drying.
- the absorbent can be prepared by continuously circulating a solution in which the amine compound is dissolved by placing the carrier in a container capable of sieving.
- the present invention also relates to a carbon dioxide absorbent prepared by the method for producing carbon dioxide described above.
- the carbon dioxide absorbent has a form in which an amine absorbent is dispersed in pores of the carrier.
- the carbon dioxide absorbent prepared according to the manufacturing method of the present invention is excellent in the ability to absorb carbon dioxide in the presence of moisture compared to the absorption ability of the wet amine, excellent regeneration, and can be absorbed and regenerated carbon dioxide at 120 °C or less, It can be usefully used for the process of removing carbon dioxide in a combustion gas airflow environment.
- the carbon dioxide absorbent prepared by the present invention has a reproducibility value of 80% or more, preferably 85% or more at 80 ° C.
- the shape of the absorbent was measured using the naked eye, an industrial microscope or an electron scanning microscope (SEM).
- Average particle size and particle size distribution of the absorbent were measured according to the standard method ASTM E-11. At this time, 10 g of the absorbent sample was sieved in a sieve shaker for 30 minutes, and then the average particle size and size distribution were calculated according to the calculation method presented.
- the packing density of the absorbent was measured according to the apparatus and method presented in the standard ASTM D 4164-88.
- the specific surface area and pore volume of the absorbent were measured using a quantachrome multi BET surface area meter and an Hg porosity meter, respectively.
- the wear resistance of the absorbent was measured in accordance with the test method and procedure given in the specification using a 3-hole attrition tester manufactured according to ASTM D 5757-95.
- the wear index (AI) calculated according to the method presented in ASTM, is the ratio of the initial sample volume (50 g) to the collected fine powder generated by wear in a wear tube for 5 hours at a flow rate of 10 slpm (standard liters per minute).
- One of the important indicators of the (fluidized bed or high velocity fluidized bed) process is that less than 30% is preferred for the (fluidized bed) process.
- the wear index (AI) expressed in wear resistance indicates that the smaller the value, the higher the wear strength.
- Step 1 preparing spherical porous solid particles (carrier)
- an emulsifying stirrer which can be stirred to adjust to 10,000 to 25,000 rpm by adding a dispersant and an antifoaming agent to the distilled water measured so that the slurry concentration (content of the solid raw material to the total weight of the slurry) of the solid raw material can be 35 parts by weight. It was prepared by adding solid raw materials to the solvent mixed with a (homogenizer) sequentially or at a time. The slurry was prepared by using a high energy bead mill over a second time, and then, about 1.25% by weight of the organic binder PEG was added to the colloid slurry, followed by well stirring, followed by aging for 2 hours or more to remove foreign substances. .
- distilled water, a dispersant, and an antifoaming agent were added as necessary to adjust the solid raw material content of the final slurry to about 22.3 parts by weight, the viscosity of the slurry to about 25,700 cP, and the slurry pH to 10.47, and spray-dry the prepared slurry. It was.
- the solid particles prepared by spray drying are pre-dried at 120 ° C. for 2 hours or more in a dryer, and then remain at 200 ° C., 300 ° C. and 400 ° C. for 1 hour before reaching the final firing temperature at an elevated temperature of 5 ° C./min.
- the final carrier (hereinafter referred to as Support-A) was prepared by calcination at 550 ° C. for 2 hours or more using a kiln.
- the support prepared by the present invention has an excellent BET surface area and porosity, and has an excellent wear resistance index.
- Figure 1 shows the particle shape (X 500) of Support-A. As shown in FIG. 1, the prepared carrier has a spherical shape.
- Step 2 supporting the amine compound on the carrier
- an active substance 15 parts by weight of an amine compound (PEI (molecular weight: about 1800), MEA, TETA, and 2-Amino-2-methyl-1-propanol (AMP)) were dissolved in distilled water, respectively.
- the carrier prepared in Step 1 was added and stirred at 50 ° C. for at least 10 hours.
- the carrier supporting the amine compound evaporated the solvent at a temperature of about 65 ° C. with a rotary evaporator under a pressure of 100 mmHg to prepare a carbon dioxide absorbent for the dry capture process in which the amine compound was supported in the fine pores and mesopores. It was.
- the absorbents prepared above were designated as A-PEI, A-MEA, A-TETA and A-AMP, respectively.
- Figure 2 shows the particle shape (X 500) of A-PEI. As shown in Figure 2, it can be confirmed that the shape of the solid absorbent prepared in the embodiment is not changed compared to the shape of the carrier (Fig. 1).
- FIG. 3 is a graph showing the TGA absorption capacity evaluation results of the absorbent prepared in Example 1.
- CO 2 absorption capacity was measured by supplying simulated flue gas of 14.4 vol% CO 2 , 5.4 vol% O 2 , 7 vol% H 2 O and 73.2 vol% N 2 using a thermogravimetric analyzer (TGA).
- TGA thermogravimetric analyzer
- the absorption reaction was carried out at 50 °C
- the regeneration reaction was carried out at 80 °C.
- the initial absorption capacity was 5.0 wt%.
- the organic-inorganic composite absorbent of the composition shown in the present invention showed a regeneration of more than 95% at 80 °C.
- the carrier and the absorbent were prepared in the same manner as in Example 1 except that the molecular sieve 13X (Chohoho Material), which is an acidic support, was used as the support.
- molecular sieve 13X Chohoho Material
- the prepared carrier was denoted as Support-B, and the absorbent in which the amine compound was supported in Support-B was denoted as B-PEI, B-MEA, B-TETA, and B-AMP, respectively.
- the carrier using the acidic support has lower values in packing density and BET surface area than the carrier in the example using the amphoteric support.
- Figure 4 shows the particle shape of Supporrt-B (a) and B-PEI (b), it can be seen that there is no difference in the shape of the carrier before and after the amine compound (PEI) support.
- FIG. 5 shows the distribution of micropores and mesopores of Support-A and Support-B, and the porosities of micropores and mesopores were 36.5% and 57.5%, respectively.
- Figure 6 is a graph showing the absorbent capacity of the absorbent according to the type of the amine compound, as shown in Figure 6, in the case of B-PEI absorption capacity is 3.8% by weight compared to A-PEI using the amphoteric support Less appeared (see FIG. 3).
- a carrier and an absorbent were prepared in the same manner as in Example 1, except that 30 to 100 parts by weight of 2-peperidine ethanol, a cyclic secondary amine compound, was dissolved in methanol as an active material. It was.
- A-PZ1 was used in the case of 40 parts by weight
- A-PZ2 was used in the case of 50 parts by weight. It is indicated as A-PZ4.
- the content of the amine supported on the dispersant was found to be 11.8 to 13.1% by weight.
- the content of amine supported on the carrier was measured using a thermogravimetric analyzer.
- Figure 7 is a graph showing the adsorption isotherm and the adsorption capacity of the absorbent prepared in Example 2, as shown in Figure 7, it can be seen that the absorbent has a good CO 2 adsorption amount of 8.1 to 9.3% by weight.
- the carrier and the absorbent were prepared in the same manner as in Comparative Example 1 except that 50 and 100 parts by weight of 2-peperidine ethanol, a cyclic secondary amine compound, was used as an active material.
- the absorbers thus prepared were denoted B-PZ1 and B-PZ2, respectively.
- the carrier and the absorbent were prepared in the same manner as in Example 1 except that 15 parts by weight of PEI having an molecular weight of 800 or less as an active substance was dissolved in a mixed solvent of distilled water and ethanol for 1 hour.
- FIG. 8 is a graph showing the results of evaluation of five cycles of continuous absorbency of the absorbent prepared in Example 3.
- FIG. 1 To the absorbent using a batch reactor was a 5 times the absorption reaction continuously at 50 °C by supplying a simulated exhaust gas with the same composition as the reaction gas given in Example 1 Absorb the reaction, regeneration is CO 2 100% by volume of the gas Regeneration characteristics were analyzed at 80 ° C, 100 ° C and 120 ° C for each cycle. Regeneration reaction after the fourth absorption was performed at 100 ° C in a nitrogen atmosphere.
- the CO 2 absorption capacity was maintained as 80% or more of the initial absorption capacity, and was evaluated as an absorbent applicable as a carbon dioxide absorbent for a dry collection process.
- the absorbers thus prepared were expressed as 13X-PEI, Al2O3-PEI and MgO-PEI depending on the type of support.
- Table 4 Average particle size ( ⁇ m) Fill density (g / cc) Wear Resistance Index (AI,%) 13X-PEI 5 or less 0.5 Not measurable Al 2 O 3 -PEI 5 or less 0.37 Not measurable MgO-PEI 5 or less 0.69 Not measurable
- the absorbents were found to be difficult to be applied as an absorbent in a fluidized bed process, such as having a fine powder, having a low filling density, and measuring the wear resistance.
- FIG. 9 is a graph showing the results of evaluating the absorbency of the absorbent prepared in Comparative Example 3
- Figure 10 is a photograph showing the particle shape.
- the CO 2 absorption capacity was lower than about 3 wt% of 13X-PEI and MgO-PEI, and 6.7 wt% of Al 2 O 3 -PEI compared with the absorbent shown in Example 1
- the particle shape of the molecular sieve 13X, gamma alumina, and magnesium oxide is not spherical, and the average particle size is 5 micrometers or less, and the filling density is low. It is difficult to apply to the fluidized bed or high speed fluidized bed process, and wear resistance measurement is not possible.
- FIG. 11 is a graph showing the results of TGA weight gain of the absorbent prepared in Example 4. As shown in FIG. 11, the CO 2 absorption capacity of the absorbent was found to be 8.6 wt%, and the regeneration of the absorbent was confirmed to be about 86% at 80 ° C. In other words, as shown in the present invention, the supporting member carrying the amine compound as the active ingredient has excellent regeneration ability at low temperature.
- (a) and (b) have the same level of absorbency, but the absorbent (a) carrying the amine compound has a higher reaction rate and lower temperature than the absorbent (b) carrying no amine compound. It can be seen that it shows better results at the regeneration temperature.
- the absorbent according to the present invention selectively reacts with the active component developed in the microparticles and mesopores developed in the carrier particles and carbon dioxide to capture carbon dioxide and at the same time satisfies the physical properties of the fluidized bed or high speed fluidized bed dry capture process (hereinafter, dry capture) It can be used repeatedly for continuous application.
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Abstract
Description
평균입자크기(㎛) | 충진밀도(g/cc) | BET 표면적(m2/g) | Hg 기공도(%) | 내마모지수(AI, %) |
108 | 0.91 | 387.4 | 71.73 | 0.14 |
평균입자크기(㎛) | 충진밀도(g/cc) | BET 표면적(m2/g) | Hg 기공도(%) | 내마모지수(AI, %) |
115 | 0.83 | 165.1 | 79.24 | 1.24 |
흡수제명 | A-PZ1 | A-PZ2 | A-PZ3 | A-PZ4 |
아민 담지량, 중량% | 11.84 | 13.1 | 12.95 | 11.97 |
BET 표면적, m2/g | 269 | - | 259 | - |
메조세공 부피, cm3/g | 0.34 | - | 0.10 | - |
미세세공 부피, cm3/g | 0.33 | - | 0.10 | - |
평균입자크기(㎛) | 충진밀도(g/cc) | 내마모지수(AI,%) | |
13X-PEI | 5 이하 | 0.5 | 측정불가 |
Al2O3-PEI | 5 이하 | 0.37 | 측정불가 |
MgO-PEI | 5 이하 | 0.69 | 측정불가 |
평균입자크기(㎛) | 충진밀도(g/cc) | BET 표면적(m2/g) | Hg 기공도(%) | 내마모지수(AI, %) |
121 | 0.9 | - | - | 5.0 |
Claims (19)
- (A) 지지체와 무기결합제를 함유하는 담지체 조성물 및 용매를 포함하는 슬러리 조성물을 제조하는 단계;(B) 상기 제조된 슬러리 조성물을 분무 건조시켜 고체 입자를 제조하는 단계;(C) 상기 제조된 고체 입자를 건조 소성시켜 담지체를 제조하는 단계; 및(D) 상기 제조된 담지체의 세공에 아민화합물을 담지시키는 단계를 포함하는 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,지지체는 염기성 지지체, 중성 지지체 또는 양쪽성 지지체인 이산화탄소 흡수제 제조 방법.
- 제 2 항에 있어서,염기성 지지체는 산화칼슘, 산화아연 및 산화마그네슘이고, 중성 지지체는 탄소체, 마그네슘 및 알루미늄을 함유하는 산화물, 마그네슘 및 규소를 함유하는 산화물, 칼슘 및 알루미늄을 함유하는 산화물 및 칼슘 및 규소를 함유하는 산화물이며, 양쪽성 지지체는 알루미나, 이산화타타늄, 산화지르코늄 및 산화세륨인 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,지지체의 함량은 담지체 조성물 전체 중량에 대하여 20 내지 85 중량부인 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,무기결합제는 시멘트류, 점토류 또는 세라믹류인 이산화탄소 흡수제 제조 방법.
- 제 5 항에 있어서,시멘트류는 칼슘 실리케이트 및 칼슘 알루미네이트이고, 점토류는 벤토나이트 및 카올린이며, 세라믹류는 알루미나졸, 실리카졸 및 보에마이트인 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,무기결합제의 함량은 담지체 조성물 전체 중량에 대하여 5 내지 50 중량부인 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,담지체 조성물을 슬러리 조성물 전체 중량에 대하여 15 내지 60 중량부 포함하는 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,슬러리 조성물은 분산제, 소포제 및 유기결합제로 이루어진 그룹으로부터 선택된 하나 이상의 유기첨가제를 추가로 포함하는 이산화탄소 흡수제 제조 방법.
- 제 9 항에 있어서,분산제는 음이온계 분산제, 양이온계 분산제 및 비이온계 분산제로 이루어진 그룹으로부터 선택된 하나 이상이고, 소포제는 금속비누계 또는 폴리에스테르계이며, 유기결합제는 폴리비닐알코올계, 폴리글라이콜계 및 메틸셀룰로즈로 이루어진 그룹으로부터 선택된 하나 이상인 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,단계 (A)를 수행한 후, 슬러리 조성물을 교반 및 분쇄하는 단계; 및상기 교반 및 분쇄된 슬러리 조성물 중의 이물질을 제거하는 단계를 추가로 수행하는 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,단계 (C)의 건조는 공기 분위기 및 110 내지 150℃에서 수행되는 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,단계 (C)의 소성은 공기, 질소, 헬륨 또는 환원가스 분위기 및 350 내지 1000℃에서 수행되는 이산화탄소 흡수제 제조 방법.
- 제 1 항에 있어서,단계 (D)는 아민화합물을 용매에 용해시키는 단계; 및상기 용매에 단계 (C)에서 제조된 담지체를 혼합하고, 교반하는 단계로 수행되는 이산화탄소 흡수제 제조 방법.
- 제 14 항에 있어서,아민화합물은 모노에탄올아민(MEA), 테트라틸렌펜타아민(TEPA) 및 트리에틸렌테트라아민(TETA)의 1차 아민화합물, 피페라진 및 2-피페리딘 에탄올의 피페라진계의 고리형 2차 아민화합물, 1-(2-히드록시에틸)피페라진의 고리형 3차 아민화합물 또는 폴리에틸렌이민(PEI)의 아민화합물 고분자인 이산화탄소 흡수제 제조 방법.
- 제 14 항에 있어서,아민화합물의 함량은 담지체의 중량에 대하여 5 내지 70 중량부인 이산화탄소 흡수제 제조 방법.
- 제 14 항에 있어서,용매는 증류수, 유기용매 또는 이들의 혼합용매인 이산화탄소 흡수제 제조 방법.
- 제 14 항에 있어서,교반은 30 내지 80℃에서 수행되는 이산화탄소 흡수제의 제조 방법.
- 제 1 항에 따른 이산화탄소 흡수제 제조 방법에 의해 제조된 이산화탄소 흡수제.
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PCT/KR2011/008196 WO2013065880A1 (ko) | 2011-10-31 | 2011-10-31 | 건식 이산화탄소 포집 공정용 아민 또는 그 화합물을 포함하는 고체 이산화탄소 흡수제 및 그 제조방법 |
AU2011380572A AU2011380572B2 (en) | 2011-10-31 | 2011-10-31 | Solid carbon dioxide absorbent including amine or a compound thereof for use in the capturing process of dry carbon dioxide, and method for manufacturing same |
US14/355,134 US9844766B2 (en) | 2011-10-31 | 2011-10-31 | Solid carbon dioxide absorbent including amine or a compound thereof for use in the capturing process of dry carbon dioxide, and method for manufacturing same |
CN201180075418.3A CN103998123B (zh) | 2011-10-31 | 2011-10-31 | 用在干燥二氧化碳的捕集方法中的含胺或其化合物的固体二氧化碳吸收剂及其制造方法 |
US15/809,614 US10456772B2 (en) | 2011-10-31 | 2017-11-10 | Solid carbon dioxide absorbent including amine or a compound thereof for use in the capturing process of dry carbon dioxide, and method for manufacturing same |
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PCT/KR2011/008196 WO2013065880A1 (ko) | 2011-10-31 | 2011-10-31 | 건식 이산화탄소 포집 공정용 아민 또는 그 화합물을 포함하는 고체 이산화탄소 흡수제 및 그 제조방법 |
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US15/809,614 Division US10456772B2 (en) | 2011-10-31 | 2017-11-10 | Solid carbon dioxide absorbent including amine or a compound thereof for use in the capturing process of dry carbon dioxide, and method for manufacturing same |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104907045A (zh) * | 2014-03-10 | 2015-09-16 | 江苏瑞丰科技实业有限公司 | 二氧化碳高效捕集材料 |
US9579602B2 (en) | 2015-02-26 | 2017-02-28 | University Of Wyoming | Catalytic CO2 desorption for ethanolamine based CO2 capture technologies |
CN109621890A (zh) * | 2018-12-24 | 2019-04-16 | 华中科技大学 | 一种全流程工业化球状钙基co2吸附剂的制备方法 |
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US9844766B2 (en) | 2017-12-19 |
CN103998123A (zh) | 2014-08-20 |
US10456772B2 (en) | 2019-10-29 |
AU2011380572A1 (en) | 2014-05-22 |
CN103998123B (zh) | 2016-08-24 |
AU2011380572B2 (en) | 2016-05-26 |
US20180078920A1 (en) | 2018-03-22 |
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