EP3294859A1 - Fermenter for producing a pseudoplastic medium - Google Patents
Fermenter for producing a pseudoplastic mediumInfo
- Publication number
- EP3294859A1 EP3294859A1 EP16723069.7A EP16723069A EP3294859A1 EP 3294859 A1 EP3294859 A1 EP 3294859A1 EP 16723069 A EP16723069 A EP 16723069A EP 3294859 A1 EP3294859 A1 EP 3294859A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stirring
- axis
- rotation
- fermenter
- tank volume
- 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.)
- Withdrawn
Links
- 238000003756 stirring Methods 0.000 claims abstract description 197
- 150000004676 glycans Chemical class 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 229920001282 polysaccharide Polymers 0.000 claims description 14
- 239000005017 polysaccharide Substances 0.000 claims description 14
- 238000000855 fermentation Methods 0.000 claims description 12
- 230000004151 fermentation Effects 0.000 claims description 12
- 238000005496 tempering Methods 0.000 claims description 9
- 229920001285 xanthan gum Polymers 0.000 claims description 8
- 229920001503 Glucan Polymers 0.000 claims description 6
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229920002498 Beta-glucan Polymers 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 4
- FYGDTMLNYKFZSV-URKRLVJHSA-N (2s,3r,4s,5s,6r)-2-[(2r,4r,5r,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5r,6s)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1[C@@H](CO)O[C@@H](OC2[C@H](O[C@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-URKRLVJHSA-N 0.000 claims description 3
- 229920000310 Alpha glucan Polymers 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 235000010633 broth Nutrition 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 229940082509 xanthan gum Drugs 0.000 description 3
- 235000010493 xanthan gum Nutrition 0.000 description 3
- 239000000230 xanthan gum Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000013341 scale-up Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0723—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis oblique with respect to the rotating axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/55—Baffles; Flow breakers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/93—Heating or cooling systems arranged inside the receptacle
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/22—Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/44—Mixing of ingredients for microbiology, enzymology, in vitro culture or genetic manipulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0413—Numerical information
- B01F2215/0418—Geometrical information
- B01F2215/0422—Numerical values of angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
- B01F23/23362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer
Definitions
- the present invention relates to a device for fermenting a broth for the production of a pseudoplastic medium, in particular a fermenter for the production of polysaccharides or glucans, which allows a uniform shearing influence or a large area with low viscosity for the mixing of the pseudoplastic medium.
- fermenters For the production of polysaccharides or glucans, fermenters may be used in which the pseudoplastic medium produced during the production is also agitated in the fermenter. Such a movement can be caused for example by a stirring arrangement.
- Viscosity-related property that influences the stirring process as a function of a local shear stress in a fermenter.
- Structural viscosity refers to a fluid or medium when the property of the fluid exhibits a decreasing viscosity at high shear forces. That is, the stronger the shear acting on the fluid, the less viscous it becomes. Such a fluid is synonymously referred to as shear thinning. Such a decrease in the viscosity under shear stress arises, for example, from a structural change in the fluid, which ensures that the individual fluid particles, for example polymer chains, can slide past one another better. Since the viscosity does not remain constant with increasing shear in a pseudoplastic fluid, the fluid is usually classified as non-Newtonian fluid, so that the usual Newtonian fluid flow approaches can not be applied thereto. Therefore, the usual flow considerations of fluids no longer apply, and mixing can not be done with simple
- stirrer geometries can be achieved. If such a pseudoplastic medium is stirred, the local shear stress leads to a local reduction of the viscosity, so that locally a higher flowability of the pseudoplastic medium occurs. This requires different stirrer geometries than for
- stirrer geometries are known from the prior art. For example, in “Xanthan Production in Stirred Tank Fermenters: Oxygen Transfer and Scale-up" by Holger Herbst, Adrian Schumpe and Wolf-Dieter Deckwer, described a reactor in which the diameter ratio of stirrer and stirring volume is at most 0.7.
- Diameter ratio of stirrer to tank of not more than 0.65 described.
- Leitblechzylinder wherein the stirrer extends only to the Leitblechgeometrie in the tank volume.
- EP 1 258 502 describes simple stirrer geometries for the preparation of an alkoxyl composite. It has been found that all of these previously described agitator geometries for the stirring and the uniform reaction of a pseudoplastic medium in one
- Fermenter are not suitable to ensure a sufficiently uniform shear influence or to provide a sufficiently high range with low viscosity. Subject of the present invention
- a fermenter for producing a pseudoplastic medium
- the fermenter comprises: a tank volume and a stirrer assembly with a first stirrer having at least one impeller, a second stirrer having at least one impeller and a rotation axis, wherein the first stirrer and the second stirrer are fixed to the rotation axis so as to rotate with the rotation axis and are axially spaced, the rotation axis at
- Agitator and the stirring blades of the second stirring member extend to at least 0.8 times the distance between the central axis of the circular cylinder and a wall of the circular cylinder, so that a ratio (d / D) of Rlickorgan tomesser (d) to
- Inner diameter (D) of the tank of at least 0.8.
- a uniform shearing influence of the pseudoplastic medium can be achieved, and in particular in the pseudoplastic medium, a high range with low viscosity can be achieved. Due to the relatively large diameter of the stirrer, which projects up to close to the inner wall of the tank volume, a large portion of the pseudoplastic medium can be subjected to a shear stress, so that in large areas, the viscosity decreases or decreases in pseudoplastic medium.
- a shear stress of the pseudoplastic medium By arranging a first stirring element and a second stirring element above or below each other can be achieved not only in the radial direction, but also in the axial direction in a wide range, a shear stress of the pseudoplastic medium, so that in a relatively large area at a Operation or rotation of the stirring elements with the axis of rotation reduces the viscosity.
- the agitators may have only a single impeller, the diameter of the agitator is understood to be the circle drawn through the outermost tip of the single agitator blade. It should be understood that the impellers in their radial direction of extension, starting from the axis of rotation, form a uniform shape, i. no changing
- Rotary axis wegragende rods can be connected to the axis of rotation.
- the potency approach according to Ostwald de Waele is described in Zlokarnik, M. (2000) Dimensionanalytic treatment of variable substance sizes, in Scale-up: Model Transfer in Process Engineering, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
- Stirrer designed such that adjusts at a rotation of the axis of rotation at a shear-thinning medium to be touched at the radially outer ends of the impeller, a flow having a primary axial direction.
- the pseudoplastic medium in the fermenter can not only be subjected to a shear stress in the plane of the stirring elements, but also through the primary axial conveying direction in the volume above or below the stirring element. In this way, the intermediate region between the two stirring elements of a
- the stirrers can protrude to very close to the container wall, so as to reach in this area a high shear stress and a reduction in viscosity.
- the pseudoplastic medium can be circulated or homogenized close to the wall region of the fermenter, whereby the fermentation process is favored.
- the first stirrer in addition to the first impeller on a second impeller, wherein the first impeller and the second
- Agitator blades each extend with respect to the rotation axis on opposite sides of the rotation axis orthogonal away from the rotation axis.
- the stirring element can be made substantially symmetrical, with two mutually opposite stirring blades. It should be understood that the second stirring member and each further stirring member may have such a configuration.
- Symmetrical design of the stirring is an uneven stress on the stirring elements and the axis of rotation, in particular their storage and their drive, avoided.
- the first stirring element and the second stirring element have a matching number of at least two stirring vanes, wherein the stirring vanes of the first stirring element are arranged offset from the stirring vanes of the second stirring element.
- the stirring vanes of the first and the second stirring member are arranged offset from one another by a quarter circle.
- Shearing stress can be achieved by the stirring blades in the pseudoplastic medium.
- the stirring elements each have three or four uniformly distributed stirring blades. It should be understood that even with stirrers with three, four or more stirring blades these blades can be arranged offset to wings of adjacent stirrers to each other. In particular, they may be arranged such that an impeller of a stirrer is rotationally offset in the middle between two impellers of the adjacent stirrer.
- the stirring surfaces of the first impeller and the second impeller are at least in the region of the outer ends of the impeller relative to the vertical substantially around the extension direction of the corresponding
- the surfaces or stirring surfaces of the first stirring blade and the second stirring blade are inclined relative to the vertical (parallel to the axis of rotation) between 30 ° and 60 °, in particular between 40 ° and 50 °, in particular by 45 ° ⁇ 2 °. In this way, an optimum ratio of mass displacement of the pseudoplastic medium during a stirring process with simultaneous shear stress can be achieved.
- the inclination of the stirring surfaces over the direction of extension from the axis of rotation varies in the direction of the tank inner walls, so that under
- the inclination of the stirring surfaces relative to the vertical in the vicinity of the axis of rotation can be 60 ° and decrease in the direction of the tips of the stirring blades to 45 °.
- the fermenter further comprises an active
- Temperature control surface for heating and / or cooling, wherein the flow path is guided along the temperature control surface.
- the fermentation process can be controlled within the fermenter and accelerated or decelerated depending on the requirements of the fermentation process, namely by appropriate heating or cooling of the active temperature of the
- the tempering surfaces can be provided on the tank wall, but also be arranged within the tank volume.
- the tempering surface is configured by circulating pipe sections, which are arranged in groups with respect to the axis of rotation in the axial direction, wherein a group extends between two immediately superimposed stirring members.
- Rlickorgane substantially the shape of a circular cylinder, wherein in the circular cylinder inwardly projecting baffles may be provided, wherein the baffles extend further inwardly, as the stirring blades extend outwardly in the direction of the wall of the tank volume.
- inwardly projecting Stromstorer brake such
- the streamers keep the pipe sections spaced from a wall of the tank volume, the pipe sections being located farther inward in the tank volume as the stirring vanes extend outwardly toward the wall of the tank volume.
- the stirring arrangement further comprises a third stirring element, a fourth stirring element and a fifth stirring element, which are arranged spaced apart on the axis of rotation, wherein each of the stirring elements comprises two stirring blades, which are offset by a quarter circle with respect to the stirring blades of an adjacent Stirrer on the axis of rotation.
- a stirring arrangement can be provided with five or more stirring elements, which are fastened, for example, at equal distances on the axis of rotation and rotate therewith.
- the individual stirring elements can also have three, four or more stirring blades, whereby the offset corresponds to half the angle between two adjacent stirring blades of a stirring element.
- the stirring blades of adjacent stirring elements can also be arranged one above the other, that is to say not offset from one another.
- the fermenter comprises a
- Gas supply device whose mouth is arranged below the at least two stirring elements.
- oxygen can be introduced to promote the fermentation, or another gas can be introduced in order to displace, for example, an oxygen in the pseudoplastic medium.
- Gas supply means may be arranged in particular below the coverage circle of the impeller. It should be understood that above the two stirring elements, a further gas supply means may be present, in particular, a gas supply means may be provided between any two stirring elements.
- At least three pipe sections are arranged in the axial direction in a cross-sectional plane of a Stromstorers.
- two pipe sections in the radial direction and four to five pipe sections in the axial direction can be arranged in a cross-sectional plane of a Stromstorers.
- any number of radially juxtaposed pipe sections and any number of axially juxtaposed pipe sections may be provided, as long as this group of pipe sections does not restrict the movement of the stirring elements.
- the polysaccharide is in solution
- the polysaccharide is an extracellular, viscosity-increasing polysaccharide.
- the polysaccharide is a glucan, which in particular comprises at least one of an ⁇ -glucan, a ⁇ -glucan and a xanthan, or is essentially an ⁇ -glucan, a ⁇ -glucan or a xanthan.
- Figure 1 shows a sectional view through a fermenter according to an exemplary
- FIG. 2 shows a detail of a stirring arrangement according to an exemplary embodiment of the invention.
- FIG. 1 shows a fermenter according to an exemplary embodiment of the invention for producing a pseudoplastic medium.
- the fermenter 1 in this case has a tank volume 70, which is defined by a wall of the tank volume 71.
- a stirring arrangement with a plurality of stirring elements 10, 20, 30, 40, 50, which are each attached to a rotation axis 60 and can rotate together with the rotation axis 60, driven by a motor M, about the rotation axis 60.
- the two impellers of a stirring member extend from the central axis or the axis of rotation 60 in the direction of the wall 71 of the
- each stirring member on two stirring blades, which have over the direction of extension substantially a constant inclination.
- Each impeller 1 1, 12 has a corresponding inclined surface 13, 14, with which the pseudoplastic medium in a rotation of the rotation axis 60 substantially in one axial direction, that is promoted with a component parallel to the axis of rotation.
- this can be pressed either upwards or downwards by the inclined surfaces 13, 14, depending on the direction in which the rotation axis 60 rotates with the stirring members 10 to 50 attached thereto.
- a flow direction 7 sets in, which can be swirl-like, wherein this flow has an axial component which is formed stronger than a radial component.
- the vortex or vortex-like flow is simplified by arrows with the
- each stirring element on two stirring blades which are each arranged offset to the stirring blades of a immediately adjacent arranged stirring element.
- the stirring vanes of the lowermost stirring element 10, the middle stirring element 30 and the upper stirring element 50 extend laterally in the image plane, while the stirring vanes of the
- intermediate stirrers 20 and 40 extend forwards out of the image plane or back into the image plane.
- the stirring blades of the stirring elements shown in FIG. 1 have an inclination substantially constant over the direction of extent, here with the angle ⁇ , which indicates the inclination relative to the vertical, that is to say the direction of extension of the axis of rotation 60. It should be understood that the inclination of the impellers may vary over the extension length of the impellers from the axis of rotation 60 to the wing tip, so that the different
- the inclination of the surfaces with respect to the direction of the rotation axis 60 in the near-axis region may be greater than in the region away from the axis.
- the axial propulsion component is lower than at a smaller inclination.
- the filling level in the tank volume 70 is located shortly below the uppermost stirring element, so that the stirring element 50 in FIG. 1 is arranged above the medium 9 to be stirred.
- a gas supply device is provided below the lowermost stirring element 10, the mouth of which lies below the lowermost stirring element 10. The mouths 91 can be below the coverage of the two
- Gas supply means 90 is introduced into the medium to be stirred 9, the volume of the medium to be stirred increases by the introduced gas bubbles. As a result, the Level in the tank volume, so that the level in this case can rise above the top stirrer 50, so that the top stirrer 50 contributes to the stirring.
- the axis of rotation 60 with the attached thereto is introduced into the medium to be stirred 9, the volume of the medium to be stirred increases by the introduced gas bubbles.
- the Level in the tank volume so that the level in this case can rise above the top stirrer 50, so that the top stirrer 50 contributes to the stirring.
- the rise of the gas bubbles in the media to be stirred 9 is favored, namely when the stirring blades press the medium to be stirred 9 due to the inclined surfaces of the impeller up or braked when the agitator the medium down move when the rotation axis 60 rotates in the opposite direction and the stirring surfaces press the gas bubbles in the medium to be stirred 9 down.
- the stirring blades 1 1, 21, 31, 41, 51; 12, 22, 32, 42, 52 extend from the axis of rotation 60 to just before the wall 71 of the tank volume 70.
- the diameter of the stirring elements which is to be understood in the context of the invention as the diameter of the sweeping circle of the respective stirring member, is approximately so as large as the diameter of the tank volume 70 in the region of a circular cylinder cross-sectional portion of the tank volume 75th
- Diameter of the tank volume D is for example 0.9. It should be understood that the diameter ratio d / D can be chosen as large as possible, so that takes place up to the edge region of the tank volume stirring movement of the stirring elements 10 to 50 at these points a shear stress of the pseudoplastic medium, so that there is a good mixing of Touching medium 9 takes place.
- the diameter ratio d / D may for example be up to 0.99, provided that it is ensured that the radially outer ends 15 of the stirring blades do not collide with the wall 71 of the tank volume.
- temperature control surfaces 80 can be made available which can temper the tank volume 70 or the medium 9 to be stirred therein.
- tempering surfaces can be arranged, for example in the form of outer cooling coils on the outside of the tank volume 70. Alternatively or additionally, it is also possible to arrange tempering surfaces within the tank volume 70, which are then located, for example, between the stirring elements.
- the temperature control surfaces provided in the tank volume 70 may be, for example, peripheral pipe sections 85, which may be arranged in the tank volume 70, for example in the form of pipe spirals.
- the circulating pipe sections can be both spiral and circular
- the spiral-shaped arrangement may be provided, wherein for a sequential flow, the spiral-shaped arrangement may be provided.
- it can also be provided circular pipe sections, which are either flowed through in parallel, or which can be sequentially flowed through by a bend and a connection between a pipe section and an overlying pipe section through the crank. In the one shown in FIG.
- Embodiment are circulating between the stirrer groups 88
- pipe sections which usually consist of two juxtaposed in the radial direction pipe sections, as well as five under or over each other Pipe sections.
- Such a group 88 of pipe sections can be flowed through by a corresponding spiral guide sequentially of a temperature control, either a coolant or a heating medium. Due to the design of the stirring vanes and the resulting, preferably axial flow of the medium 9 to be stirred within the tank volume, an overflow of the temperature control surfaces 80 or of the groups 88 of circumferential pipe sections 85 is achieved, so that in this area a temperature control of the medium to be stirred 9 can take place.
- the medium to be stirred in a total rotational movement By tempering the fermentation process can be controlled in order to prevent the rotation of the stirring elements 10 to 50, the medium to be stirred in a total rotational movement, so that the medium to be stirred is substantially no longer moves with respect to the stirring elements can be provided in the tank volume 70 Stromstorer 76.
- These Stromstorer may for example be paddles or sheets extending inwardly from the wall 71 of the tank volume 70, for example in the direction of the axis of rotation. It should be understood that the Stromstorer 76 may extend vertically and / or horizontally inclined in the tank volume 70 and not necessarily on the
- Rotary axis 60 must show.
- the Stromstorer can be attached directly to the wall 71 of the tank volume 70 or protrude through spacers in the tank volume 70.
- the Stromstorer overlap radially with the stirring blades of the stirring elements, so that there is a radial overlap of baffles 76 and agitators 1 1, 21, 31, 41, 51, etc. In this way, a rotational movement of the medium to be stirred 9 is interrupted or disturbed and thus ensures the relative movement of the stirring blades in relation to the medium 9 to be stirred. Consequently, by the stirrers a
- the Stromstorer 76 can also serve as holding structures for the tempering surfaces.
- the Stromstorer can serve as support structures for the groups of rotating pipe sections and position them.
- both the Stromstorer 76 and the groups 88 of pipe sections 85 may extend as far into the space between the Rfordorganen as long as they rotate the stirrers around the
- FIG. 2 shows a section of a stirring arrangement which is constructed from the rotation axis 60 and a first stirring element 10 and a second stirring element 20. It should be understood that further stirrers above and below the first or second stirrer are not excluded here.
- Each of the two stirring elements 10, 20 in this case has a first impeller 1 1 and 21 and a second impeller 12 and 22, respectively.
- the stirring blades are inclined in the arrangement shown in Figure 2 by about 45 ° relative to the extension direction of the rotation axis 60.
- the surfaces 13 and 14 and 23 and 24 are inclined and can accelerate depending on the direction of rotation of the medium to be stirred 9 either up or down.
- the pseudoplastic medium becomes less viscous and thus more free-flowing, so that thorough mixing is improved.
- the outer ends 15 and 25 extend to just before the wall 71 of the tank volume 70, which is not shown in Figure 2.
- the stirring elements 10, 20 each have two stirring blades extending on opposite sides
- the stirring elements 10, 20 can also have three, four or more stirring blades. These impellers can be distributed uniformly along the circumference, so that a substantially symmetrical stirrer is available.
- the stirring vanes of the first stirring element 1 1, 12 are offset with respect to the stirring vanes of the second stirring element 21, 22.
- FIG. 2 shows an offset by a quarter circle. It should be understood, however, that the offset may also be of different sizes, so that, for example, with three existing stirrers on the axis of rotation of the offset of adjacent stirrers may be 60 °, so that a continued offset of stirrer to stirrer each further 60 °.
- stirring blades can also be arranged one above the other, that is to say without offset in adjacent stirring elements.
- the present invention can also be used in particular in pseudoplastic media which can be used for the extraction of crude oil, for example xanthan, glucans, in particular o and ⁇ -glucans.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15167132.8A EP3093336A1 (en) | 2015-05-11 | 2015-05-11 | Fermenter for producing a structurally viscous medium |
PCT/EP2016/060433 WO2016180823A1 (en) | 2015-05-11 | 2016-05-10 | Fermenter for producing a pseudoplastic medium |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3294859A1 true EP3294859A1 (en) | 2018-03-21 |
Family
ID=53059014
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15167132.8A Withdrawn EP3093336A1 (en) | 2015-05-11 | 2015-05-11 | Fermenter for producing a structurally viscous medium |
EP16723069.7A Withdrawn EP3294859A1 (en) | 2015-05-11 | 2016-05-10 | Fermenter for producing a pseudoplastic medium |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15167132.8A Withdrawn EP3093336A1 (en) | 2015-05-11 | 2015-05-11 | Fermenter for producing a structurally viscous medium |
Country Status (11)
Country | Link |
---|---|
US (1) | US20180355302A1 (en) |
EP (2) | EP3093336A1 (en) |
KR (1) | KR20180004145A (en) |
CN (1) | CN107636140A (en) |
AU (1) | AU2016261296A1 (en) |
BR (1) | BR112017024104A2 (en) |
CA (1) | CA2983077A1 (en) |
EA (1) | EA201792456A1 (en) |
MX (1) | MX2017014458A (en) |
WO (1) | WO2016180823A1 (en) |
ZA (1) | ZA201708219B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018103055A1 (en) * | 2016-12-09 | 2018-06-14 | 卓金星 | Fermentation tank |
CN108192812B (en) * | 2018-01-17 | 2021-08-27 | 张格玮 | Solid matrix fermenting installation |
WO2021049883A1 (en) * | 2019-09-10 | 2021-03-18 | 한화솔루션 주식회사 | Batch-type stirrer for suspension polymerization of polyvinyl chloride resin, and batch-type suspension polymerization reactor using same |
CN112795477A (en) * | 2021-01-21 | 2021-05-14 | 李月月 | High-efficiency anaerobic bioreactor |
EP4400206A1 (en) * | 2023-01-16 | 2024-07-17 | Universidad de Sevilla | Agitated tank with improved homogeneity bubble distribution and method thereof |
CN117720990B (en) * | 2023-12-07 | 2024-09-03 | 宝鸡阜丰生物科技有限公司 | Waste liquid fermentation device for polyglutamic acid production and production method thereof |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936388A1 (en) * | 1979-09-08 | 1981-04-02 | Hoechst Ag, 6000 Frankfurt | METHOD AND DEVICE FOR IMPROVING THE MIXED GOOD OF LIQUID, IN PARTICULAR ZAEHER MEDIA |
HU199557B (en) * | 1987-06-12 | 1990-02-28 | Biogal Gyogyszergyar | Equipment of fermentation for breeding of aerobic microorganisms |
JP3330523B2 (en) * | 1997-09-11 | 2002-09-30 | 神鋼パンテツク株式会社 | Stirred tank for storing yeast liquid and method for producing fermented foods such as beer using the stirred tank |
US5972661A (en) * | 1998-09-28 | 1999-10-26 | Penn State Research Foundation | Mixing systems |
US6762325B2 (en) | 2001-05-16 | 2004-07-13 | Nippon Shokubai Co., Ltd. | Method for production of alkoxylated compound |
CN1747770A (en) | 2002-12-16 | 2006-03-15 | 纳幕尔杜邦公司 | Form the device and method of crystalline thing/particulate |
US7718405B2 (en) * | 2005-09-19 | 2010-05-18 | American Air Liquide, Inc. | Use of pure oxygen in viscous fermentation processes |
CN201506790U (en) * | 2009-09-15 | 2010-06-16 | 嘉吉烯王生物工程(湖北)有限公司 | Fermentation tank |
CN202610223U (en) * | 2012-05-30 | 2012-12-19 | 成都合成生物科技有限公司 | Microorganism fermentation cylinder with air distributor and capable of improving oxygen capacity |
CN103981086A (en) * | 2014-06-03 | 2014-08-13 | 常州市科宏电子电器有限公司 | Circulating ventilation multi-stage variable speed plastic fermentation tank |
-
2015
- 2015-05-11 EP EP15167132.8A patent/EP3093336A1/en not_active Withdrawn
-
2016
- 2016-05-10 CA CA2983077A patent/CA2983077A1/en not_active Abandoned
- 2016-05-10 US US15/573,343 patent/US20180355302A1/en not_active Abandoned
- 2016-05-10 KR KR1020177032231A patent/KR20180004145A/en unknown
- 2016-05-10 MX MX2017014458A patent/MX2017014458A/en unknown
- 2016-05-10 AU AU2016261296A patent/AU2016261296A1/en not_active Abandoned
- 2016-05-10 WO PCT/EP2016/060433 patent/WO2016180823A1/en active Application Filing
- 2016-05-10 EA EA201792456A patent/EA201792456A1/en unknown
- 2016-05-10 BR BR112017024104A patent/BR112017024104A2/en not_active Application Discontinuation
- 2016-05-10 EP EP16723069.7A patent/EP3294859A1/en not_active Withdrawn
- 2016-05-10 CN CN201680027098.7A patent/CN107636140A/en active Pending
-
2017
- 2017-12-04 ZA ZA2017/08219A patent/ZA201708219B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU2016261296A1 (en) | 2017-12-07 |
EP3093336A1 (en) | 2016-11-16 |
CN107636140A (en) | 2018-01-26 |
ZA201708219B (en) | 2019-05-29 |
KR20180004145A (en) | 2018-01-10 |
US20180355302A1 (en) | 2018-12-13 |
CA2983077A1 (en) | 2016-11-17 |
EA201792456A1 (en) | 2018-07-31 |
BR112017024104A2 (en) | 2018-07-31 |
MX2017014458A (en) | 2018-03-15 |
WO2016180823A1 (en) | 2016-11-17 |
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