EP4457018A1 - Mélange de solides inorganiques - Google Patents
Mélange de solides inorganiquesInfo
- Publication number
- EP4457018A1 EP4457018A1 EP22843855.2A EP22843855A EP4457018A1 EP 4457018 A1 EP4457018 A1 EP 4457018A1 EP 22843855 A EP22843855 A EP 22843855A EP 4457018 A1 EP4457018 A1 EP 4457018A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- population
- agglomerates
- zeolite
- inorganic solids
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
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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
- 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
- B01D53/261—Drying gases or vapours by adsorption
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/165—Natural alumino-silicates, e.g. zeolites
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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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
- B01J20/28016—Particle form
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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
- B01J20/3028—Granulating, agglomerating or aggregating
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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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
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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
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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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
- B01D2253/30—Physical properties of adsorbents
- B01D2253/302—Dimensions
- B01D2253/304—Linear dimensions, e.g. particle shape, diameter
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- 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
- B01D2256/24—Hydrocarbons
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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
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
Definitions
- the present invention relates to the field of zeolite agglomerates, and more specifically beds of zeolite agglomerates.
- Zeolite agglomerates are typically particles with a size that can range from a few tens of nanometers to a few tenths or even hundreds of millimeters.
- a recurring problem lies in the way and the techniques used to fill the containers, since it is sought to densify the beds of zeolite agglomerates in order to be able to dispose, in a minimum of space possible, of the greatest possible quantity of zeolite agglomerates , i.e. to densify the beds of zeolite agglomerates, with the aim of constantly improving the efficiency and profitability of industrial installations.
- a mobile device which comprises a shaft driven in rotation by a motor means and several stages of flexible deflecting elements such as strips, as in the documents EP007854 A1 and EP116246 A1.
- Densicat® comprising a device and a process for loading a container with a divided solid and in particular for loading fixed beds of the type chemical or electrochemical, petroleum or petrochemical with solids which can be in the form of balls, grains, cylinders, etc.
- WO2019120938 A1 describes a process for filling an enclosure with solid particles which have previously undergone a pretreatment.
- This pretreatment consists in mixing said solid particles, before loading into the enclosure, with at least one solid lubricant, chosen from saturated fatty acids with 14 or more carbon atoms, their metal salts, esters, fatty alcohols with 14 carbon atoms. or more carbon, linear N-alkanes having 16 or more carbon atoms in solid form, fumaric acid, talc, sodium stearoyl fumarate.
- the lubricant is introduced at room temperature, at a content of between 0.01% and 1% by weight relative to the total weight of the mixture of solid particles and lubricant.
- Patent US7927555 B2 describes a process for loading catalyst particles comprising a particular liquid such as water or organic compounds which have a boiling point above 100° C. under 1 atmosphere.
- Patent EP0891802 B1 proposes a particle loader intended to load particles into a container to form a bed of particles with outer and inner concentric layers, the particles of the inner and outer layers being both of different particle size and of different composition.
- the present invention aims to overcome the problems set out above encountered with the loading methods known from the prior art.
- a first objective consists in proposing a means allowing a dense and optimized loading of solid particles in a container, for example a column intended to receive solid particles, such as zeolite agglomerates or catalyst particles.
- Another objective is to avoid the front slopes of filling, or at least to avoid filling front slopes greater than 10%.
- Another objective consists in increasing the quantity of active phase in beds of zeolite agglomerates or of catalyst for a given volume in order to further improve the efficiency of said zeolite agglomerate or of said catalyst respectively.
- the inventors have in fact discovered a simple, economical and effective way of making it possible to densify, that is to say make denser, a set of charged particles in a container, in particular to densify beds of zeolite agglomerates (also called molecular sieves), fixed beds as simulated moving beds, commonly used in catalytic processes or adsorption or separation processes and preferably in adsorption-separation processes, but also beds of catalyst particles.
- zeolite agglomerates also called molecular sieves
- the present invention relates to a mixture comprising at least a first population P1 of inorganic solids of volume-average diameter (VMD1) and a second population P2 of inorganic solids of volume-average diameter (VMD2 ), whose DMV2/DMV1 ratio is between 0.10 and 0.60, limits included, preferably between 0.15 and 0.55, limits included, advantageously between 0.20 and 0.50, limits included, and more particularly between 0.25 and 0.50, limits included.
- VMD1 inorganic solids of volume-average diameter
- VMD2 volume-average diameter
- the inorganic solids of the population P1 have a volume-average diameter (VMD1) of between 0.4 mm and 5 mm, preferably between 0.4 mm and 2.5 mm, more preferably between 0.4 mm and 1 mm, and very particularly preferably between 0.4 mm and 0.8 mm, terminals included.
- VMD1 volume-average diameter
- the mixture according to the present invention generally and preferably comprises a population P2 of inorganic solids in an amount such that it does not lead to substantial variability in the volume mean diameter of the mixture (VMDm), relative to VMD1. More precisely, the mixture according to the invention has a DMVm/DMVI ratio greater than 0.85, preferably greater than 0.88, and even more preferably greater than 0.90.
- the amount of inorganic solids of the second population (P2) represents up to 25%, preferably up to 15%, for example from 0.5% to 25 %, better still from 1% to 15%, by weight, limits included, with respect to all the inorganic solids P1+P2.
- the inorganic solids of the P2 population have a volume mean diameter (MVD2) of less than 2 mm, preferably less than 1 mm, even more preferably less than 0.5 mm, more particularly less than 0.4 mm, and typically less than 0.3 mm.
- the volume-average diameter DMV2 is, according to a preferred aspect, greater than 0.05 mm, and more preferably greater than 0.1 mm.
- the volume average diameter (VMD2) is between 0.05 mm and 2 mm, preferably between 0.05 mm and 1 mm, more preferably between 0.05 mm and 0.5 mm, more particularly between 0.1 mm and 0.4 mm, and typically between 0.1 mm and 0.3 mm, terminals included.
- the latter relates to a mixture of inorganic solids consisting of at least two populations P1 and P2, as they have just been defined.
- the inorganic solids of populations P1 and P2 can be of any kind.
- the invention is however very particularly suitable for inorganic solids chosen from adsorbents in general, such as zeolites, aluminas, silica gels, and catalysts, and more particularly from zeolitic agglomerates also called molecular sieves, and catalysts solids, whether in the form of powders, balls, crushed, extruded, spun, molded bodies or any other form well known to those skilled in the art, and preferably in the form of balls.
- adsorbents in general, such as zeolites, aluminas, silica gels, and catalysts, and more particularly from zeolitic agglomerates also called molecular sieves, and catalysts solids, whether in the form of powders, balls, crushed, extruded, spun, molded bodies or any other form well known to those skilled in the art, and preferably in the form of balls.
- zeolite agglomerates also known as molecular sieves, and among these agglomerates of zeolite crystal(s) with at least one binder, organic or inorganic, preferably inorganic, for example a clay or a mixture of clays.
- the inorganic solids of the populations P1 and P2 are of identical chemical nature or at least sufficiently close, namely that the 2 populations participate in the same desired goal during the use of the mixture. According to an entirely preferred aspect, the inorganic solids of the populations P1 and P2 are of the same chemical nature.
- the inorganic solids of the populations P1 and P2 play the role of "lubricant" in relation to each other, which leads to a reduction in the free space between the particles of inorganic solids and therefore a densification of the mixture present in a container, in other words a gain in volume compared to what is observed with a single population of inorganic solids P1 or a single population of inorganic solids P2.
- the invention is particularly suitable for zeolite agglomerates and solid particles of catalysts.
- the inorganic solids of population 2 have an average roundness greater than 60%, more preferably greater than 80%, and most preferably greater than 90%.
- the mean roundness is calculated as indicated in the document WO2008152319 from the moments of the distribution of the circles, inscribed in the particle, and tangent to the points of the contour of the particle, according to a complex filtering. It is representative of the variation in the radius of curvature of the particles and reflects the maturity of a solid in an abrasion process. Soft bumps are more significant than very sharp bumps. The closer the shape of the particles is to perfect sphericity, the closer the blunting is to 100%.
- the mixture according to the invention advantageously has a crushing strength in bed typically between a few hundred kPa and a few tens of MPa and is generally between 0.3 MPa and 3.2 MPa, preferably between 0.3 MPa and 2.5 MPa.
- the method for measuring the crushing strength in the bed, as well as the other analysis methods, are explained later in the description.
- the mixture according to the invention is particularly well suited for zeolite adsorbent agglomerates, whether molecular sieves or catalyst particles.
- the mixture of the invention is particularly well suited to solid particles of zeolite agglomerates.
- the mixture of the invention comprises or consists of inorganic solids which are agglomerates of zeolite crystals well known to those skilled in the art and widely already described in the scientific literature and the patent literature.
- the zeolite agglomerates included in the mixture of the present invention are agglomerates of zeolite crystals, which zeolites are chosen from LTA type zeolites, preferably 3A, 4A and 5A, FAU type zeolites, preferably X, LSX, MSX, Y type, MFI type zeolites, preferably ZSM-5 type and silicalites, P zeolites, SOD type zeolites (such as sodalites), MOR-type zeolites, CHA-type zeolites (such as chabazites), HEU-type zeolites (such as clinoptilolites), as well as counterparts with hierarchical porosity, and mixtures of two or more of them in any proportions.
- LTA type zeolites preferably 3A, 4A and 5A
- FAU type zeolites preferably X, LSX, MSX, Y type
- MFI type zeolites preferably ZSM-5 type and si
- zeolites chosen from LTA type zeolites, preferably 3A, 4A and 5A, FAll type zeolites, preferably X, LSX, MSX, Y type , P zeolites, SOD-type zeolites (such as sodalites), MOR-type zeolites, CHA-type zeolites (such as chabazites), HEU-type zeolites (such as clinoptilolites), as well as counterparts with hierarchical porosity, and mixtures of two or more of them in any proportions.
- LTA type zeolites preferably 3A, 4A and 5A
- FAll type zeolites preferably X, LSX, MSX, Y type
- P zeolites preferably SOD-type zeolites (such as sodalites), MOR-type zeolites, CHA-type zeolites (such as chabazites), HEU-type zeolites (such as clinoptilolites), as
- the aforementioned zeolites can be natural, artificial or synthetic, that is to say natural, modified or synthesized. Zeolites most often contain one or more types of cations in order to ensure their electronic neutrality.
- the cations present in zeolites naturally or after one or more cationic exchanges are well known to those skilled in the art. Non-limiting examples of such cations include cations of hydrogen, alkali metals, alkaline earth metals, metals of groups VIII, IB and I IB, and mixtures of two or more of these, and most often examples of cations include lithium, potassium, sodium, barium, calcium, silver, copper, zinc cations, and mixtures of two or more of these, in any proportion.
- Very particularly preferred mixtures according to the invention comprise, by way of non-limiting examples, at least a first population P1 of zeolite agglomerates and at least a second population P2 of zeolite agglomerates, where the zeolite agglomerates are identical or different and are chosen from agglomerates of LTA zeolites (such as 3A, 4A, 5A), X, LSX, MSX and Y.
- LTA zeolites such as 3A, 4A, 5A
- mixtures according to the invention comprise a mixture of LTA zeolite agglomerates, for example 3A zeolite and 4A zeolite, or a mixture of 4A zeolite agglomerates and 5A zeolite agglomerates, a mixture of LSX zeolite agglomerates and X zeolite agglomerates, a mixture of MSX zeolite agglomerates and X zeolite agglomerates, a mixture of LSX zeolite agglomerates and MSX zeolite agglomerates, a mixture of zeolite X agglomerates and zeolite Y agglomerates, a mixture of zeolite 4A agglomerates and zeolite X agglomerates, to name only a few of them.
- LTA zeolite agglomerates for example 3A zeolite and 4A zeolite, or a mixture of 4
- the inorganic solids of the populations P1 and P2 are of the same nature, that is to say, and by way of nonlimiting examples, form a mixture chosen from the group comprising, mixtures of agglomerates zeolites based on LTA zeolite (for example mixtures of zeolite agglomerates based on zeolite 3A, mixtures of zeolite agglomerates based on zeolite 4A), mixtures of zeolite agglomerates based on zeolite LSX, mixtures of zeolite agglomerates based on MSX zeolite, mixtures of zeolite agglomerates based on zeolite X, mixtures of zeolite agglomerates based on zeolite Y, mixtures of zeolite agglomerates based on MFI zeolite, mixtures of zeolite agglomerates based on EMT zeolite,
- the inorganic solids of the populations P1 and P2 are of different nature, that is to say, and by way of non-limiting examples, form a mixture chosen from the group comprising mixtures of zeolite agglomerates based on zeolite X and agglomerates based on zeolite LSX, mixtures of zeolite agglomerates based on zeolite X and agglomerates based on zeolite MSX, mixtures of agglomerates zeolites based on MSX zeolite and agglomerates based on LSX zeolite, mixtures of zeolite agglomerates based on zeolite X and agglomerates based on zeolite Y, mixtures of zeolite agglomerates based on zeolite X and agglomerates based on zeolite 4A, mixtures of zeolite agglomerates based on zeolite 4A, mixtures
- the mixture according to the invention can be prepared by any means well known to those skilled in the art, for example by simple mechanical mixing of the inorganic solids of the populations P1 and P2, using a conventional stirrer, at blades, for example, or via a feed hopper with a common loading conduit, when loading said mixture directly into the desired container.
- the mixture according to the invention makes it possible to respond in whole in part to the drawbacks encountered in the prior art and quite particularly makes it possible to improve the filling density of a container with inorganic solid particles, in particular as defined previously.
- the mixture of the invention thus makes it possible to densify a bed of solid inorganic particles while avoiding the use of an organic lubricant which may prove difficult to eliminate and/or remain at least partly in said mixture.
- the lubricating effect is observed thanks to the specific ratio of the mean diameters by volume of the populations P1 and P2.
- the mixture according to the present invention allows an increase in the packed density of the population of more than 2%, of preferably more than 5%, more preferably more than 7%, advantageously more than 10%, relative to the packed density of the population P1.
- Another advantage of the mixture of the invention lies in the fact that the preliminary mixing step can be eliminated by concurrently loading the inorganic solids of the populations P1 and P2 into the container. Thanks to the lubricating effect observed, the inorganic solid particles fill the container densely, without the need to resort to other alternate filling techniques, radial/axial or other, nor by resorting to complex equipment aimed at filling the container homogeneously, as is often seen in the prior art.
- the loading into a container of the mixture according to the invention can therefore be carried out from the mixture of the inorganic solid particles of the populations P1 and P2, directly or even by concomitant loading, as indicated above.
- one or more auxiliary means to help dense loading of the mixture according to the invention, such means being well known to those skilled in the art and being able to be chosen, as non-limiting examples among, a vibrating means, a flexible sleeve, a means provided with blade(s), and others, in order to further improve the homogeneous distribution of the mixture according to the invention in the desired container.
- Such means are however generally not preferred, the mixture according to the invention exhibiting an entirely unexpected flowability, leading to ease of loading, in particular in bed, not yet observed with the techniques described in the prior art.
- the mixture according to the present invention is particularly suitable for filling a container in an optimal manner, that is to say with an optimized quantity of particles of inorganic solids per unit volume.
- This quantity optimization effect per unit volume in other words “densification”, is in particular due to the very good flowability of the mixture of the invention. This property can be observed for populations of inorganic solids of all sizes, as shown earlier.
- the mixture according to the present invention also has the advantage of being suitable for all container sizes, whether they are a column, a tube, a reactor or other.
- the good flowability properties of the mixture according to the invention mentioned above ensure densification during filling and very good homogeneity of the filling, and make it possible to substantially optimize the hydrodynamics of the flows in the targeted applications.
- the mixture according to the invention thus finds uses in many fields of application whether in static mode or in dynamic mode, and for example, without limitation, for gas and/or liquid separations.
- separations of organic molecules, such as hydrocarbons for example, in gas and/or liquid phase, catalytic reactions in gas and/or liquid phase, and others.
- the loss on ignition is determined in an oxidizing atmosphere, by calcining the sample in air at a temperature of 950° C. ⁇ 25° C., as described in standard NF EN 196-2 (April 2006). The standard deviation of measurement is less than 0.1%.
- Density (or density):
- the apparent density of the zeolitic agglomerated material according to the present invention is measured as described in standard DI N 8948/7.6 or standard ASTM D4164 depending on the size of the agglomerated material to be tested.
- a given quantity of the mixture of agglomerated balls is introduced into a 250 mL graduated cylinder.
- the specimen is placed in a compaction system (shaking system of the JEL STAV 2003 Stampf type) and compacted for 10 minutes, ie 2400 blows. Obtaining a constant volume is checked with the addition of an additional 2-minute settling.
- the filling density or packed density is then calculated by measuring the weight of the mixture in the test specimen and the occupied volume.
- the agglomerates are allowed to regain moisture in order to ensure that there is no variation in weight during the density measurement.
- a loss on ignition measurement, PAF is carried out in order to be able to reduce the density measurements to an anhydrous value.
- the determination of the mean volume diameter (or volume mean diameter) of an inorganic solid particle is carried out using the CamSizer® device from Microtrac, by analyzing the particle size distribution of a sample of adsorbent material by imaging according to ISO 13322-2:2006, using a conveyor belt allowing the sample to pass in front of the camera lens.
- the volume mean diameter is then calculated from the particle size distribution by applying the ISO 9276-2:2001 standard.
- the precision is of the order of 0.01 mm for the range of volume-average diameters of the solid particles that can be used in the context of the present invention.
- the mean roundness commonly called “mean roundness” in English, is expressed as a percentage, and is calculated from the moments of the distribution of the circles inscribed in the particle, and which are tangent to the points of the contour of the particle, according to a complex filtering, as already indicated above. It is representative of the variation in the radius of curvature of the particles and reflects the maturity of a grain in an abrasion process. Soft bumps are more significant than very sharp bumps. The closer the shape of the particles is to perfect sphericity, the closer the blunting is to 100%.
- the method used to characterize the mechanical strength of the mixture of inorganic solids of the invention is the ASTM D 7084-04 standard which makes it possible to determine the crushing strength of a bed of solid.
- An increasing force is imposed in stages by means of a piston on a sample of 20 cm 3 of agglomerates placed in a metal cylinder of known internal section.
- the fines obtained at the various pressure levels are separated by sieving and weighed.
- the sieves used are suitable for agglomerates smaller than
- 200 ⁇ m, 80 ⁇ m and 40 ⁇ m sieves are used for mixtures with volume-average diameters between 500 ⁇ m and 1000 ⁇ m respectively, between 180 ⁇ m and 500 ⁇ m and between 50 ⁇ m and 180 ⁇ m respectively.
- the crushing strength in bed is determined by interpolation of the load applied to 0, 5% by mass of cumulative fines and calculation of the corresponding pressure in MPa, relating the interpolated force to the surface of the internal section of the cylinder.
- Two adsorbents are prepared from type X Faujasite zeolite crystals, the average crystal size of which in number is 0.6 ⁇ m.
- a homogeneous mixture is prepared and 800 g of zeolite crystals are agglomerated, with 160 g of kaolin (expressed in calcined equivalent) and 60 g of colloidal silica sold under the trade name KlebosolTM 30N50 (containing 30% by weight of SiO2 and 0.5 wt% Na2O) in an Eirich nodulator mixer.
- the stirrer is turned on and water is gradually introduced until a humidity of the mixture of approximately 36% is reached.
- the stirring shaft speed is adjusted to prepare medium-sized beads of approximately 0.7 mm.
- the agglomerates larger than 1 mm and the fines smaller than 0.315 mm are removed by sieving.
- the balls thus obtained are dried, then calcined at 550°C (firing of the clay) under a stream of nitrogen for
- the volume-average diameter DMV1 of the beads obtained (Population P1) is 0.662 mm and the packed density (reduced to anhydrous) is 0.613.
- a second adsorbent is prepared according to the same protocol, but increasing the stirring speed to obtain agglomerates of average size close to 0.150 mm.
- the agglomerates are then polished in a bezel so as to form regular balls.
- the selection by sieving is carried out so as to obtain balls of size between 0.08 mm and 0.180 mm.
- the balls are dried, then calcined at 550°C (firing of clay) under a stream of nitrogen for 2 hours.
- the volume-average diameter DMV2 of the beads obtained (Population P2) is 0.137 mm and the packed density (reduced to anhydrous) is 0.563.
- a mixture is then prepared in a TURBULA helical mixer of the Populations P1 and P2, in the mass proportions 90% of P1 and 10% of P2.
- the DMV2/DMV1 ratio is equal to 0.21.
- the packed density of the mixture is also measured and a gain of 10.7% compared to the packed density observed for Population 1 is noted.
- an adsorbent 3 is prepared by also varying the stirring speed in order to obtain agglomerates of average size close to 0.20 mm.
- the agglomerates are then polished in a bezel so as to form regular balls.
- the selection by sieving is carried out so as to obtain balls of size between 0.125 mm and 0.315 mm.
- the beads are dried, then calcined at 550°C (clay firing) under a stream of nitrogen for 2 hours.
- the mean volume diameters DMV2 of the beads obtained (Population P2) and their packed density (reduced to anhydrous) are 0.210 mm and 0.574 respectively.
- a mixture is then prepared in a TURBULA helical mixer of Populations P1 (from Example 1) and P2 (adsorbent 3 prepared above), in the mass proportions 90% of P1 and 10% of P2.
- the DMV2/DMV1 ratio is equal to 0.32.
- the packed density of the mixture is also measured and a gain of 9.4% compared to the packed density observed for Population 1 is noted.
- This example clearly shows that the mixture according to the invention makes it possible to substantially increase the packed density of a Population 1, while maintaining an almost unchanged volume mean diameter.
- a new adsorbent, adsorbent 4 is prepared in the same way as adsorbents 2 and 3 above, also varying the stirring speed in order to obtain agglomerates with average sizes close to 0.30 mm. After passing the agglomerates through the bezel, selection by sieving is carried out so as to obtain balls of size between 0.18 mm and 0.40 mm. The beads are dried, then calcined at 550°C (clay firing) under a stream of nitrogen for 2 hours. The volume-average diameters DMV2 of the beads obtained (Population P2) and their packed density (reduced to anhydrous) are 0.318 mm and 0.606 respectively.
- a mixture is then prepared in a TURBULA helical mixer of Populations P1 (from Example 1) and P2 (adsorbent 4), in the mass proportions 90% of P1 and 20% of P2.
- the DMV2/DMV1 ratio is equal to 0.48.
- the packed density of the mixture is also measured and a gain of 7.1% compared to the packed density observed for Population 1 is noted.
- Another adsorbent is prepared according to the same protocol (according to the protocols described above for adsorbents 3 and 4) by varying the stirring speed in order to obtain agglomerates of average sizes close to 0.45 mm .
- the agglomerates are then polished in a bezel so as to form regular balls. Selection by sieving is carried out so as to obtain balls of size between 0.40 mm and 0.50 mm. The balls are dried, then calcined at 550° C. (firing of the clay) under a stream of nitrogen for 2 hours. The mean volume diameter DMV2 of the beads obtained (Population P2) and their packed density (reduced to anhydrous) are respectively 0.441 mm and 0.607.
- the packed density of the mixture is also measured and it is noted that there is no gain, or even a loss of density of -0.4% compared to the packed density observed for Population 1.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2114715A FR3131547A1 (fr) | 2021-12-31 | 2021-12-31 | Mélange de solides inorganiques |
| PCT/FR2022/052310 WO2023126592A1 (fr) | 2021-12-31 | 2022-12-12 | Mélange de solides inorganiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4457018A1 true EP4457018A1 (fr) | 2024-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22843855.2A Pending EP4457018A1 (fr) | 2021-12-31 | 2022-12-12 | Mélange de solides inorganiques |
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| Country | Link |
|---|---|
| US (1) | US20250153135A1 (fr) |
| EP (1) | EP4457018A1 (fr) |
| JP (1) | JP2025501244A (fr) |
| KR (1) | KR20240123831A (fr) |
| CN (1) | CN118488872A (fr) |
| CA (1) | CA3241691A1 (fr) |
| FR (1) | FR3131547A1 (fr) |
| MX (1) | MX2024007843A (fr) |
| TW (1) | TWI852237B (fr) |
| WO (1) | WO2023126592A1 (fr) |
| ZA (1) | ZA202405023B (fr) |
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| US2655273A (en) | 1949-11-07 | 1953-10-13 | Phillips Petroleum Co | Method and apparatus for evenly distributing solid contact material |
| US3668115A (en) | 1970-03-27 | 1972-06-06 | Atlantic Richfield Co | Process for charging catalyst |
| BE789066A (fr) | 1971-09-24 | 1973-03-21 | Atlantic Richfield Co | Procede ameliore de chargement de catalyseur dans un reacteur |
| DE2546445A1 (de) | 1974-10-25 | 1976-04-29 | Atlantic Richfield Co | Verfahren und vorrichtung zum verteilen teilchenfoermigen materials |
| US3995753A (en) | 1975-07-31 | 1976-12-07 | Uop Inc. | Dispensing apparatus for particulate matter |
| FR2431449A1 (fr) | 1978-07-20 | 1980-02-15 | Raffinage Cie Francaise | Dispositif de repartition d'un solide divise dans une enceinte |
| FR2538795B1 (fr) | 1982-12-30 | 1987-01-02 | Raffinage Cie Francaise | Perfectionnements aux dispositifs de remplissage d'une enceinte avec un solide sous forme particulaire |
| FR2721900B1 (fr) | 1994-06-30 | 1996-08-23 | Inst Francais Du Petrole | Appareillage pour le remplissage d'un recipient avec des particules spheriques |
| FR2740123B1 (fr) | 1995-10-20 | 1998-01-02 | Total Raffinage Distribution | Procede et dispositif pour la distribution uniforme d'un solide sous forme divisee dans une enceinte |
| US5836362A (en) | 1997-07-15 | 1998-11-17 | Praxair Technology, Inc. | Multiple adsorbent loading method and apparatus for a radial flow vessel |
| FR2863909B1 (fr) * | 2003-12-22 | 2006-05-26 | Ceca Sa | Methode de purification de flux gazeux pollue par co2 et hydrocarbure(s) et/ou oxyde(s) d'azote par adsorbant zeolitique agglomere |
| FR2872497B1 (fr) | 2004-07-02 | 2007-11-30 | Total France Sa | Dispositif et procede pour le chargement d'une enceinte avec un solide divise comprenant un arbre de rotation creux |
| DE102005010645A1 (de) | 2005-03-08 | 2005-08-04 | Basf Ag | Verfahren zum Befüllen eines Reaktors |
| FR2916654B1 (fr) | 2007-06-04 | 2011-04-08 | Ceca Sa | Agglomeres spheriques a base de zeolite(s), leur procede d'obtention et leur utilisation dans les procedes d'adsorption ou en catalyse. |
| WO2009055216A2 (fr) * | 2007-10-26 | 2009-04-30 | Exxonmobil Chemical Patents Inc. | Procédé de préparation d'une composition de tamis moléculaire composition |
| FR2925367B1 (fr) * | 2007-12-20 | 2010-01-15 | Ceca Sa | Adsorbants zeolitiques agglomeres, leur procede de preparation et leurs utilisations |
| DE202010009493U1 (de) * | 2010-02-15 | 2011-04-07 | BLüCHER GMBH | Agglomerate von Adsorberpartikeln |
| GB201400805D0 (en) | 2014-01-17 | 2014-03-05 | Johnson Matthey Plc | Method of loading a vessel |
| FR3028429B1 (fr) * | 2014-11-13 | 2016-12-09 | Ceca Sa | Adsorbant zeolithique a base de zeolithe mesoporeuse |
| JP2018021706A (ja) * | 2016-08-03 | 2018-02-08 | ユニオン昭和株式会社 | 冷媒用乾燥剤及びドライヤ |
| FR3075662B1 (fr) | 2017-12-21 | 2022-06-24 | Ifp Energies Now | Procede de pretraitement pour ameliorer le remplissage d'une enceinte avec des particules solides |
| CN109126692B (zh) * | 2018-09-14 | 2021-05-04 | 中国地质科学院郑州矿产综合利用研究所 | 一种高性能tc-5a分子筛吸附剂的制备方法 |
| US20200353434A1 (en) | 2019-04-01 | 2020-11-12 | Exxonmobil Research And Engineering Company | Methods and systems for sock-loading fixed bed reactors |
| US11235302B2 (en) | 2019-11-14 | 2022-02-01 | Catmasters LLC | Catalyst loading and unloading system for chemical reactors |
| CN111634681B (zh) | 2020-06-09 | 2021-05-04 | 吉林大学 | 一种吸附装卸装置 |
-
2021
- 2021-12-31 FR FR2114715A patent/FR3131547A1/fr active Pending
-
2022
- 2022-12-12 JP JP2024539554A patent/JP2025501244A/ja active Pending
- 2022-12-12 WO PCT/FR2022/052310 patent/WO2023126592A1/fr not_active Ceased
- 2022-12-12 KR KR1020247023841A patent/KR20240123831A/ko active Pending
- 2022-12-12 CA CA3241691A patent/CA3241691A1/fr active Pending
- 2022-12-12 US US18/725,574 patent/US20250153135A1/en active Pending
- 2022-12-12 MX MX2024007843A patent/MX2024007843A/es unknown
- 2022-12-12 CN CN202280087233.2A patent/CN118488872A/zh active Pending
- 2022-12-12 EP EP22843855.2A patent/EP4457018A1/fr active Pending
- 2022-12-26 TW TW111149977A patent/TWI852237B/zh active
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- 2024-06-26 ZA ZA2024/05023A patent/ZA202405023B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR3131547A1 (fr) | 2023-07-07 |
| ZA202405023B (en) | 2025-09-25 |
| MX2024007843A (es) | 2024-07-04 |
| TW202335741A (zh) | 2023-09-16 |
| TWI852237B (zh) | 2024-08-11 |
| CA3241691A1 (fr) | 2023-07-06 |
| US20250153135A1 (en) | 2025-05-15 |
| JP2025501244A (ja) | 2025-01-17 |
| KR20240123831A (ko) | 2024-08-14 |
| WO2023126592A1 (fr) | 2023-07-06 |
| CN118488872A (zh) | 2024-08-13 |
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