JP2011067819A - Mixing element and static fluid mixer using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing element which can be manufactured at a low cost, has a high mixing and stirring effect, and can be easily increased in size; and to provide a static fluid mixer using the same. <P>SOLUTION: The mixing element 1 includes a cylindrical passage pipe 2 through which a fluid flows, and a plurality of spiral first blade bodies 3 of a clockwise rotation type each formed of a porous body and installed in the passage pipe 2. A cylindrical first inner pipe 5 is disposed inside the blade bodies 3. A plurality of spiral blade bodies 6 of a clockwise rotation type are installed in the inner pipe 5, and an opening 9 is formed at the axis part of the blade bodies 6. The static fluid mixer is formed by using the at least one mixing element 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an improvement of a mixing element used in a static fluid mixer that mixes one type or two or more types of fluids (liquid, gas, solid, or a mixture thereof) without a mechanically movable part.

This type of static fluid mixer is used for mixing, stirring, extraction, distillation, gas absorption, dissolution, dissipation, emulsification, heat exchange, dispersion, powder mixing, and the like.
Static fluid mixers are used in many fields such as the chemical industry, paper and pulp industry, petrochemical industry, pharmaceutical industry, semiconductor industry, optical fiber manufacturing industry, energy industry, and environment-related industry.

For example, an absorption tower type exhaust gas treatment apparatus by gas-liquid contact of harmful substances such as Hcl, NH ₃ , NOx, SOx, Sic ₄ , SiHcl ₃ , SiF ₄ , CO ₂ , Hg, dioxin in exhaust gas or SiO in exhaust gas _2. It is used as a packing for dust removal equipment that collects and collects fine particles such as dust and dust, and distillation equipment. In addition, it is used as a device for removing and collecting organochlorine compounds, ammonia (NH ₄ ⁺ ), etc., by effluent treatment.

  A conventional mixing element and a static fluid mixer using the mixing element have been applied by the present inventor, and are composed of two to four right-handed or left-handed spiral blades in a passage tube. Yes. The static fluid mixer has an opening at the center, and the edges of the right-handed and left-twisted blades are alternately arranged orthogonally via the space. The blades have twist angles of 90 °, 180 °, and 270 °. Furthermore, the method of manufacturing the static fluid mixer includes a step of dividing the longitudinal direction of the passage tube into a plurality of pieces, joining two to four blades to the inner wall portion of the divided passage tube, and the passage It includes a step of joining the divided surfaces of the pipe (for example, see Patent Document 2).

Next, a description will be given of a method of manufacturing a mixing element that has a blade body that is disposed inside a cylindrical passage tube and that forms a plurality of fluid passages, and the fluid passages communicate with each other through an opening. . In this mixing element, the passage tube and the blade body are manufactured separately, and each is manufactured by joining them. The twisting angles of the mixing element are 90 °, 180 °, 270 °, and 360 ° (see Patent Document 4). The mixing element is formed of a plurality of spiral blades disposed in the passage tube, and the blade member is missing at the center of the passage tube, and intermittently in order to increase the mechanical strength in the missing portion. The inner tube is installed in The rotation angle of the blades is 90 °, 180 °, or 30 °, 45 °, and 135 ° (see, for example, Patent Document 5).
Further, the mixing element is provided with an outer cylinder tube, a blade provided in the outer tube, and an inner tube intermittently for disposing the blade in the outer tube. (See, for example, Patent Document 6).

  In the conventional mixing element, as the inner diameter of the passage tube through which the fluid flows increases, it is necessary to increase the cross-sectional area, that is, the diameter of the opening (center portion) due to manufacturing difficulties. For this reason, there is a drawback in that the fluid flows through the opening, that is, short-circuits, and the mixing / stirring effect is reduced. In addition, in order to compensate for the decrease in the mixing / stirring effect, it is necessary to arrange a large number of mixing elements, which increases the equipment cost.

Furthermore, when a mixing element having a large diameter (inner diameter of 1000 mm or more) is manufactured, there are disadvantages that the manufacturing becomes impossible and the mixing / stirring efficiency is greatly reduced. Furthermore, it is not possible to arrange it as a packing in an existing distillation column due to its large size.
Furthermore, by producing and using a mixing element with a small rotation angle (for example, about 10 °), it can be arranged as a packing in an existing distillation column, and the production capacity is greatly improved with higher performance.

JP-A-58-128134 JP-A-5-168882 Japanese Patent Laid-Open No. 7-80279 Japanese Patent Laid-Open No. 7-284642 JP 2001-170476 A JP 2001-187313 A European Patent 0678329 US Pat. No. 5,605,400 US Pat. No. 6,431,528

S. J. et al. Chen, et al. “Static Mixing Handbook”, Institute for Chemical Research, published in June 1973 Matsumura Teruichiro, Morishima Yasushi, et al. "Static Mixer-Fundamentals and Applications-" Nikkan Kogyo Shimbun, published September 30, 1981

  In the conventional mixing element and the static fluid mixer using the mixing element, the mixing / stirring efficiency decreases as the diameter of the mixing element increases, so it is necessary to increase the mixing / stirring time between the fluids. This increases the equipment cost. In addition, as the diameter becomes larger, it becomes difficult to manufacture and assemble, and the mold cost becomes higher. Furthermore, it was impossible to use it as a packing in an existing distillation column because of the size and performance of the members. In addition, use as a packing in an existing absorption tower for large air volume treatment was impossible as described above.

  Furthermore, a distillation column using a packing is required to have a large gas-liquid contact interface area, a high-performance liquid distribution function, and a wide operating range under a low pressure loss (for example, see Patent Document 3). As the volume of exhaust gas generated from incinerators, ships, power plants, etc. has increased, there has been a demand for higher performance, space saving, energy saving, and lower price of the absorption tower used in the exhaust gas treatment equipment. Yes.

A mixing element of the present invention for solving the above-described problems includes a cylindrical passage tube through which a fluid flows, a right-handed or left-turned spiral first blade body installed in the passage tube, A first inner tube disposed in an axial center portion of one blade, a right-handed or left-turned spiral second blade provided in the first inner tube, and an axis of the second blade The first blade body and the second blade body are formed of a porous body, and the lengths of the first blade body and the second blade body in the axial direction of the passage tube are provided. Are different. According to the present invention, there is provided a mixing element with high mixing efficiency, improved manufacturing simplicity and low manufacturing costs. Further, the present invention provides a mixing element that can be applied to a large-diameter (1 m or more) distillation tower type and absorption tower type gas-liquid contact device.

  According to the mixing element of the present invention, the gas-liquid contact time is shortened by improving the mixing and stirring efficiency. In addition, manufacturing costs are reduced by facilitating manufacturing. Furthermore, the production of large-diameter distillation towers and absorption towers is simplified.

1 is a perspective view of a 90 ° clockwise rotating mixing element according to an embodiment of the present invention. It is a bottom view of a mixing element similarly. It is a partial expansion perspective view of a mixing element similarly. It is a perspective view of the mixing element which consists of a right rotation type 1st blade body and a left rotation type 2nd blade body concerning an example of the present invention. FIG. 3 is a perspective view of a 90 ° counterclockwise mixing element according to an embodiment of the present invention. It is a perspective view of the mixing element which similarly consists of a left rotation type 1st blade and a right rotation type 2nd blade. It is explanatory drawing which shows the cross section of the right rotation type mixing which concerns on the Example of this invention. 1 is a perspective view of a 15 ° clockwise rotating mixing element according to an embodiment of the present invention. It is a perspective view of the mixing element which arranged the mixing element which consists of 15 degrees right rotation type blades concerning the example of the present invention at four steps. FIG. 5 is a perspective view of a mixing element in which three 30 ° right-turning mixing elements are arranged in the same manner. FIG. 5 is a perspective view of a mixing element in which three 60 ° right-rotating mixing elements are arranged in the same manner. It is a perspective view of a mixing element in which three 90 ° right-turning mixing elements are arranged in the same manner. It is a schematic sectional side view of the static fluid mixer which uses the mixing element which concerns on the Example of this invention. It is a schematic side fragmentary sectional view of a static fluid mixer. It is a schematic side fragmentary sectional view of a static mixer. It is a schematic longitudinal cross-sectional perspective view of the static type fluid mixer which concerns on this invention. It is a general | schematic fragmentary longitudinal cross-section which shows the application example at the time of applying the mixing element which concerns on this invention to a distillation tower type gas-liquid contact apparatus. It is a general | schematic fragmentary longitudinal cross-section which shows the application example at the time of applying to an absorption tower system gas-liquid contact apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a 90 ° clockwise rotating mixing element according to a first embodiment of the present invention, FIG. 2 is a bottom view of the 90 ° clockwise rotating mixing element according to the first embodiment, and FIG. 3 is a second embodiment. FIG. 4 is a partially enlarged perspective view of a 90 ° clockwise rotating mixing element according to an example, and FIG. 4 shows a mixing element comprising a right rotating first blade body and a left rotating second blade body according to a third embodiment of the present invention. Similarly, FIG. 5 is a perspective view of a left-rotation type mixing element according to the fourth embodiment, and FIG. 6 is a left-rotation type first blade body and a right-rotation type first according to the fifth embodiment. 7 is a perspective view of a mixing element composed of two blades, FIG. 7 is an explanatory view showing a cross section in the diametrical direction of the right-rotating mixing element according to the first embodiment of the present invention, and FIG. 8 is similarly related to the sixth embodiment. Perspective view and diagram of 15 ° right-handed mixing element FIG. 10 is a perspective view of a mixing element in which four 15 ° right-turning mixing elements according to a sixth embodiment of the present invention are arranged, and FIG. 10 is a drawing in which three stages of 30 ° right-turning mixing elements in the seventh embodiment are similarly arranged. FIG. 11 is a perspective view of the mixing element in which three 60 ° right-turning mixing elements of the eighth embodiment are similarly arranged, and FIG. 12 is a 90 ° right-turning mixing element of the ninth embodiment. FIG. 13 is a schematic side sectional view of the static fluid mixer according to the first embodiment using the mixing element of the present invention, and FIG. 14 uses the mixing element of the present invention. FIG. 15 is a schematic side partial sectional view of a static fluid mixer according to a third embodiment. FIG. 15 is a schematic side sectional view of a static fluid mixer according to a third embodiment. 16 is a schematic longitudinal sectional perspective view of the static fluid mixer according to the embodiment of the present invention shown in FIG. 13, and FIG. 17 is an application example when the mixing element of the present invention is applied to a distillation column type gas-liquid contact device. FIG. 18 is a schematic partial side sectional view showing an application example in the case where it is similarly applied to an absorption tower type gas-liquid contact device.

Example 1
FIG. 1 is a perspective view of a 90 ° clockwise rotating (clockwise) mixing element according to a first embodiment of the present invention, and FIG. 2 is a bottom view of the mixing element. The mixing element 1 has a cylindrical passage tube 2 and a plurality of spiral right-turning first blade bodies 3 provided in the passage tube 2. The first blade body 3 is formed of a porous body having a large number of perforated holes 4. A cylindrical first inner tube 5 is disposed inside the first blade body 3. The first inner tube 5 is provided at the connecting portion of the first blade body 3 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The first inner tube 5 has a plurality of spiral right-rotating second blades 6, and the blades 6 are formed of a porous body having a number of perforations 7. A cylindrical second inner tube 8 is arranged inside the second blade body 6 to form an opening 9. The second inner tube 8 is installed to increase the mechanical strength against the torsional stress of the second blade body 6. The second inner tube 8 is provided for the necessary length at the connecting portion of the second blade body 6 as necessary, and is not disposed elsewhere. One end portion of the first blade body 3 is connected to the outer peripheral surface of the first inner tube 5, and the other end portion is spirally twisted in a clockwise direction (clockwise rotation) toward the inner peripheral surface of the passage tube 2. The passage pipe 2 is connected to the inner peripheral surface.

  Similarly, one end of the second blade body 6 is connected to the outer peripheral surface of the second inner tube 8, and the second blade 6 is twisted in a clockwise direction (clockwise rotation) toward the inner surface of the first inner tube 5. Thus, the other end is connected to the inner peripheral surface of the first inner tube 5. Since the center portion of the second inner tube 8 is opened, the second blade body 6 does not exist in the axial center portion of the second inner tube 8 and this portion is missing. As a result, as shown in FIGS. 1 and 2, an opening 9 is formed in the axial center portion of the second inner tube 8 where no blades are present. The rotation angle (twisting angle) of the blades 3 and 6 is not limited to 90 °, but is preferably in the range of about 5 ° to 270 °, more preferably about 10 ° to 90 °, depending on the inner diameter of the mixing element 1. It is. Further, the number of the inner cylindrical tubes is arranged as in the third, fourth, fifth and nth inner cylindrical tubes according to the inner diameter of the mixing element 1 so that the diameter of the opening 9 is the minimum diameter, for example, 50 mm or less. At least one or more can be used by appropriately increasing or decreasing. Similarly, blades can be used as appropriate. Further, the number of blade bodies 3 and 6 is not limited to 12 and 6, but can be appropriately increased or decreased.

(Example 2)
FIG. 3 is a partially enlarged perspective view of a 90 ° clockwise rotating mixing element showing a second embodiment according to the present invention.
Similar to the mixing element 1 shown in FIGS. 1 and 2, the mixing element 10 includes a cylindrical passage tube 11 and a plurality of spiral right-rotating first blade bodies 12 provided in the passage tube 11. Have. The blade body 12 is formed of a porous body having a large number of perforated holes 13. A cylindrical first inner tube 14 is arranged inside the blade body 12, and one end of the blade body 12 is connected to the outer peripheral portion of the inner tube 14. The inner tube 14 is formed of a porous body having a large number of perforated holes 15. The inner cylindrical tube 14 has a plurality of spiral right-rotating second blade bodies 16, and the blade bodies 16 are formed of a porous body having a number of perforated holes 17. A cylindrical second inner tube 18 is disposed inside the blade body 16. The inner tube 18 is formed of a porous body having a number of perforations 19.

  By forming the first inner tube 14 and the second inner tube 18 with a porous body having a large number of perforations 15 and 19, the fluid flowing through the axial direction (longitudinal direction) in the mixing element 10 can be obtained. The mixing effect is further improved. The shapes of the holes 15 and 19 are appropriately selected and used as necessary, such as a triangular shape, a square shape, an elliptical shape, and a slit shape. The aperture ratio of the holes 15 and 19 is appropriately selected and used within a range of about 5% to 95%.

(Example 3)
FIG. 4 is a perspective view of a mixing element showing a third embodiment according to the present invention. The mixing element 20 has a cylindrical passage tube 21 and a plurality of spiral right-turning first blade bodies 22 provided in the passage tube 21. The blade body 22 is formed of a porous body having a number of perforations 23. A cylindrical first inner tube 24 is disposed inside the blade body 22. The inner cylindrical tube 24 has a plurality of spiral left-rotating second blade bodies 25, and the blade bodies 25 are formed of a porous body having a number of perforated holes 26. A cylindrical second inner tube 27 is disposed inside the blade body 25 to form an opening 28.
That is, a first blade body 22 that rotates clockwise (clockwise) and a second blade body 25 that rotates counterclockwise (counterclockwise) are provided in the mixing element 20. As a result, the right-handed and left-handed fluids flowing through the mixing element 20 generate strong shear stress due to the opposite vortex flows in the diametrical direction within the mixing element 20, and the mixing efficiency is further improved. The mixing efficiency is further improved by forming the inner tube 24 and the inner tube 27 with a porous body.

Example 4
FIG. 5 is a perspective view of a 90 ° counterclockwise (counterclockwise) mixing element showing a fourth embodiment according to the present invention. The mixing element 29 has a cylindrical passage tube 30 and a plurality of spiral left-rotating first blade bodies 31 provided in the passage tube 30. The first blade body 31 is formed of a porous body having a large number of perforated holes 32. A cylindrical first inner tube 33 is disposed inside the first blade body 31. The first inner tube 33 is provided at the connecting portion of the first blade body 31 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The first inner tube 33 has a plurality of spiral left-rotating second blades 34, and the blades 34 are formed of a porous body having a large number of perforated holes 35. A cylindrical second inner tube 36 is disposed inside the second blade body 34 to form an opening 37. Similarly to the above, the second inner tube 36 is installed to increase the mechanical strength against the torsional stress of the second blade body 34. The second inner tube 36 is provided in the connection portion of the second blade body 34 as necessary, as required, and is not disposed elsewhere. One end of the first blade body 31 is connected to the outer peripheral surface of the first inner tube 33, and the other end is spirally twisted counterclockwise (counterclockwise) toward the inner peripheral surface of the passage tube 30. Is connected to the inner peripheral surface of the passage tube 30.

Similarly, the second blade body 34 has one end connected to the outer peripheral surface of the second inner cylindrical tube 36 and spirals counterclockwise (counterclockwise) toward the inner peripheral surface of the first inner cylindrical tube 33. The other end is twisted and connected to the inner peripheral surface of the first inner tube 33. Since the center portion of the second inner tube 36 is opened, the second blade body 34 does not exist in the axial center of the second inner tube 36 and this portion is missing.
Similarly to the above, the rotation angle (twisting angle) of the blade bodies 31 and 34 is not limited to 90 °, but is preferably in the range of about 5 ° to 180 °, more preferably about 10 according to the inner diameter of the mixing element 29. It is in the range of ° to 90 °. In addition, the number of the inner tube pipes can be appropriately increased or decreased by at least one according to the inner diameter of the mixing element 29. Further, the number of blade bodies 31 and 34 is not limited to 12 and 6, but can be appropriately increased or decreased within a range that can be manufactured.

(Example 5)
FIG. 6 is a perspective view of a mixing element showing a fifth embodiment according to the present invention. The mixing element 38 has a cylindrical passage pipe 39 and a plurality of spiral left-rotating first blade bodies 40 provided in the passage pipe 39. The blade body 40 is formed of a porous body having a large number of perforated holes 41. A cylindrical first inner tube 42 is disposed inside the blade body 40. The inner tube 42 has a plurality of spiral right-rotating second blades 43 and is formed of a porous body having a number of perforations 44. A cylindrical second inner tube 45 is disposed inside the blade body 43 to form an opening 46.

  In the same manner as described above, that is, in the mixing element 38, a blade body 40 that rotates counterclockwise (counterclockwise) and a blade body 43 that rotates clockwise (clockwise) are provided. As a result, the right-handed and left-handed fluids flowing through the mixing element 38 generate strong shearing stress due to the opposite vortex flows in the diametrical direction within the mixing element 38, and the mixing efficiency is further improved. The mixing efficiency is further improved by forming the inner tube 42 and the inner tube 45 from a porous body.

  FIG. 7 is an explanatory diagram relating to dimensions (lengths) of the diameters of the passage tube and the inner tube in the mixing element according to the present invention. The mixing element 47 is composed of a passage pipe 48, a first blade body 49, a first inner cylinder pipe 50, a second blade body 51, and a second inner cylinder pipe 52 as described in FIGS. An opening 53 is formed. The dimensional ratio of the diameter of the passage tube and the inner tube in the mixing element 47 is such that the diameter of the passage tube 48 is φD and the diameter of the inner tube 50 is φd, and φd has a range of about 1% to 95% of φD. preferable. More preferably, it is in the range of 10% to 60%. The diameter of the opening 53 is preferably a small diameter, for example, 50 mm or less, and is in the range of about 5% to 50% of the diameter φd of the first inner tube 50. More preferably, it is in the range of about 10% to 30%. The dimensional ratio between the passage tube and the inner tube is appropriately selected and used according to the size of the passage tube. Further, the inner tube is not limited to the first inner tube and the second inner tube, and the inner tube may be, for example, the third, fourth, fifth inner tube, the nth inner tube, and the center portion of the sequential passage tube. The blades are arranged in the same manner, and the blades are similarly arranged and used as appropriate.

(Example 6)
FIG. 8 is a perspective view of a 15 ° clockwise rotating (clockwise) mixing element showing a sixth embodiment according to the present invention. The mixing element 54 a has a cylindrical passage pipe 55 and a plurality of spiral right-turning first blade bodies 56 provided in the passage pipe 55. The blade body 56 is formed of a porous body having a large number of perforated holes 57. A cylindrical first inner tube 58 is disposed inside the blade body 56. The inner tube 58 is provided in the connecting portion of the first blade body 56 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The inner tube 58 is formed of a porous body having a plurality of spiral right-turning second blade bodies 59 and a large number of perforated holes 60. A cylindrical second inner tube 61 is disposed inside the blade body 59 to form an opening 62. The inner tube 61 is installed to increase the mechanical strength against the torsional stress of the blade body 59. The second inner tube 61 is provided for the necessary length at the connecting portion of the second blade body 59 as necessary, and is not disposed elsewhere. One end of the first blade 56 is connected to the outer peripheral surface of the first inner tube 58, and the first blade 56 is spirally twisted about 15 ° clockwise (clockwise) toward the inner peripheral surface of the passage tube 55. The end is connected to the inner peripheral surface of the passage pipe 55.

  Similarly, one end of the second blade body 59 is connected to the outer peripheral surface of the second inner cylindrical tube 61, and the second blade body 59 is spirally twisted clockwise (rotated clockwise) toward the inner peripheral surface of the first inner cylindrical tube 58. Thus, the other end is connected to the inner peripheral surface of the first inner tube 58. Since the center portion of the second inner tube 61 is opened, the second blade body 59 does not exist in the axial center of the second inner tube 61 and this portion is missing. Thereby, the opening part 62 in which a blade | wing body does not exist in the axial center part of the 2nd inner cylinder pipe 61 is formed. The mixing elements 54b, 54c and 54d are formed in the same manner as the mixing element 54a.

  The mixing element 54 can easily increase the number of blade bodies 56 and 59 installed by setting the rotation angle of the first blade body 56 and the second blade body 59 to about 15 °, thereby further improving the mixing efficiency. To do. In addition, production of a large diameter (diameter of 1000 mm or more) is simplified, and the manufacturing cost is reduced. Furthermore, it can be placed in existing distillation towers and absorption towers, and can be easily assembled and installed on site and in the tower. In the method of manufacturing the mixing element 54, the passage pipe 55, the blade bodies 56 and 59, and the inner cylinder pipes 58 and 61 are manufactured separately. The passage pipe 55 and the inner cylinder pipes 58 and 61 are made of a plurality of members divided into at least two or more in the longitudinal direction, and the plurality of divided members are connected to form the cylindrical passage pipe 55 and the inner cylinder pipe 58. , 61 may be formed. Similarly, the blade bodies 56 and 59 may be divided into two or more, and the plurality of divided members may be connected to form the spiral blade bodies 56 and 59. In addition, the mixing element 54 is easily manufactured by connecting the passage pipe 55, the inner cylindrical pipes 58 and 61, and the blade bodies 56 and 59 by means such as welding, adhesion, welding, and locking.

  The mixing element 63 shown in FIG. 9 is connected so that the rotation angle (twisting angle) of the blade body 56 is about 60 ° by arranging the 15 ° clockwise rotation mixing elements 54a, 54b, 54c, 54d in four stages. Yes. That is, by mixing adjacent first blade bodies 56, a mixing element 63 having blade bodies that are 15 ° + 15 ° + 15 ° + 15 ° = 60 ° is formed.

  By arranging the required number of mixing elements 54 in this way, a mixing element having an arbitrary rotation angle such as about 180 °, about 270 °, or about 360 ° can be easily manufactured. In addition, you may arrange | position and use in arbitrary positions, without being limited to joining the edge of the adjacent blade | wing body 56 in a predetermined position. Further, the mixing element is not limited to the right rotation type blade body, and the rotation element of the blade body forming the mixing elements 10, 20, 29, and 38 shown in FIGS. Combinations are appropriately selected and used as necessary.

(Example 7)
FIG. 10 is a perspective view of a 30 ° clockwise rotating (clockwise) mixing element showing a seventh embodiment according to the present invention. Similar to the mixing element shown in FIG. 8, the mixing element 64 has a cylindrical passage pipe 65 and a plurality of spiral right-turning first blade bodies 66 provided in the passage pipe 65. . The first blade body 66 is formed of a porous body having a large number of perforated holes 67. A cylindrical first inner tube 68 is disposed inside the first blade body 66. The inner tube 68 is provided in the connecting portion of the blade body 66 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The inner cylindrical tube 68 is formed of a porous body having a plurality of spiral right-rotating second blade bodies 69 and a large number of perforated holes 70. A cylindrical second inner tube 71 is arranged inside the blade body 69 to form an opening 72. The inner tube 71 is installed to increase the mechanical strength against the torsional stress of the blade body 69. The inner tube 71 is provided for the necessary length at the connecting portion of the blade body 69 as required, and is not disposed elsewhere.

The following is the same as the mixing element shown in FIG.
The mixing element 64 shown in FIG. 10 is connected so that the rotation angle of the blade body 66 is about 90 ° by arranging about 30 ° clockwise rotation mixing elements 64a, 64b, 64c in three stages. Similar to the mixing element 63 shown in FIG. 9, a mixing element 64 having a blade body of 30 ° + 30 ° + 30 ° = 90 ° is formed.

(Example 8)
FIG. 11 is a perspective view of a 60 ° clockwise rotating (clockwise) mixing element according to an eighth embodiment of the present invention. The mixing element 73 has a cylindrical passage pipe 74 and a plurality of spiral right-turning first blade bodies 75 provided in the passage pipe 74. The blade body 75 is formed of a porous body having a large number of perforated holes 76. A cylindrical first inner tube 77 is disposed inside the blade body 75. The inner tube 77 is provided in the connecting portion of the blade body 75 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The inner tube 77 has a plurality of spiral right-rotating second blades 78 and is formed of a porous body having a number of perforations 79. A cylindrical second inner tube 80 is disposed inside the blade body 78 to form an opening 81. The inner tube 80 is installed to increase the mechanical strength against the torsional stress of the blade body 78. The inner tube 80 is provided as much as necessary at the connecting portion of the second blade body 78 as necessary, and is not disposed elsewhere.

The following is the same as the mixing element shown in FIG.
The mixing element 73 shown in FIG. 11 is connected so that the rotation angle of the blade body 75 is about 180 ° by arranging about 60 ° clockwise rotation mixing elements 73a, 73b, 73c in three stages. Similar to the mixing element 63 shown in FIG. 9, a mixing element 73 having a blade body of 60 ° + 60 ° + 60 ° = 180 ° is formed.

Example 9
FIG. 12 is a perspective view of a 90 ° clockwise rotating (clockwise) mixing element showing a ninth embodiment according to the present invention. The mixing element 82 has a cylindrical passage pipe 83 and a plurality of spiral right-turning first blade bodies 84 provided in the passage pipe 83. The blade body 84 is formed of a porous body having a large number of perforated holes 85. A cylindrical first inner tube 86 is disposed inside the blade body 84. The inner tube 86 is provided at the connecting portion of the blade body 84 by a necessary length in the axial direction (longitudinal direction), and is not disposed elsewhere. The inner tube 86 is formed of a porous body having a plurality of spiral right-rotating second blades 87 and a large number of perforated holes 88. A cylindrical second inner tube 89 is disposed inside the blade body 87 to form an opening 90. The inner tube 89 is installed to increase the mechanical strength against the torsional stress of the blade body 87. The inner tube 89 is provided for the necessary length at the connecting portion of the blade body 87 as required, and is not disposed elsewhere. The following is the same as the mixing element shown in FIG.
The mixing element 82 shown in FIG. 12 is connected so that the rotation angle of the blade body 84 is about 270 ° by arranging three stages of about 90 ° right rotation type mixing elements 82a, 82b and 82c. Similar to the mixing element 63 shown in FIG. 9, a mixing element 82 having a blade body of 90 ° + 90 ° + 90 ° = 270 ° is formed.

  FIG. 13 shows a static fluid mixer in which a right-turning mixing element according to the first embodiment using the mixing element of the present invention and a left-turning mixing element according to the fourth embodiment are connected in series through spacers. It is a schematic sectional side view. A cylindrical static fluid mixer 91 is configured by alternately rotating a right-rotating mixing element 93 and a left-rotating mixing element 94 in a cylindrical casing 92 via spacers 95 having the same diameter as the mixing elements 93 and 94. It is arranged and formed. The right rotation type second blade body 98 is disposed over the entire length of the right rotation type first blade body 96. Furthermore, the mixing elements 93 and 94 are formed by disposing the first inner tube 97 and the second inner tube 99 shown in FIGS. 1 and 5, respectively. The opening 100 is preferably formed with a small diameter (diameter 50 mm or less). Note that the static fluid mixer may be formed by alternately arranging the mixing elements 93 and 94 in the casing 92 without arranging the cylindrical spacer 95. Alternatively, the ends of the mixing elements 93 and 94 may be joined to form a static fluid mixer.

  While the two types of fluids FA and FB flow through the static fluid mixer 91 configured as described above, a part of the fluid spirally rotates along the rotation angle of the blade body and turns clockwise. A part of the fluid flows through the perforation hole of the blade body and is sheared, and a part of the fluid flows through the perforation hole of the inner tube and shears to join the fluid. Thus, rotation, passage, shearing, merging, inversion, and division are repeated to mix the two types of fluids FA and FB.

  FIG. 14 is a schematic sectional side view of a static fluid mixer according to the second embodiment shown in FIG. 3 using the mixing element of the present invention. The cylindrical static fluid mixer 101 is formed by disposing a cylindrical spacer 110 having the same diameter as that of the clockwise rotating mixing element 103 in a cylindrical casing 102. The right rotation type first blade body 104 provided in the mixing element 103 is the same as the mixing element 93 shown in FIG. 13, but the right rotation type second blade body 106 is the same as the first inner tube 105. The mixing element 103 is formed with a second inner cylindrical tube 107 and an opening 108 which are arranged in a required portion in the axial direction (longitudinal direction) via a space 109. By forming the space portion 109 in which the second blade body 106 is missing in the first inner tube 105 in this way, the mixing efficiency is further improved due to the effect of fluid confluence in the radial direction.

FIG. 15 is a schematic partial sectional view of a static fluid mixer according to the third embodiment shown in FIG. 4 using the mixing element of the present invention. The cylindrical static fluid mixer 111 is formed by arranging a cylindrical spacer 120 having the same diameter as that of the right-rotating mixing element 113 in a cylindrical casing 112. The right rotation type first blade body 114 provided in the mixing element 113 is the same as the mixing element 93 shown in FIG. 13, but the second blade provided in the first inner tube 115. The body 116 is formed as a left rotation type. Further, similarly to the mixing element 103 shown in FIG. 14, the left rotation type second blade body 116 is arranged via the space portion 119 to form the mixing element 113. Further, as in FIG. 13, a second inner tube 117 and an opening 118 are formed.
The static fluid mixer 111 configured as described above further improves the mixing efficiency due to the generation of a swirl flow of right rotation and left rotation.

  FIG. 16 is a schematic longitudinal sectional perspective view in the axial direction (longitudinal direction) of the static fluid mixer according to the embodiment of the present invention shown in FIG. 13. The cylindrical static fluid mixer 121 is formed by alternately arranging a cylindrical right rotation type mixing element 122 and a cylindrical left rotation type mixing element 123 via a cylindrical spacer 124.

  The right-rotating mixing element 122 has a cylindrical passage pipe 125 and a plurality of spiral right-rotating first blade bodies 126 provided in the passage pipe 125. The blade body 126 is formed of a porous body having a large number of perforations 127. A first inner tube 128 having a cylindrical drilling hole is disposed over the entire length of the first blade body 126 on the inner side (center portion) of the blade body 126. The inner tube 128 has a plurality of spiral right-rotating second blade bodies 129 and is formed of a porous body having a large number of perforated holes 130. A cylindrical second inner tube 131 is arranged inside (center part) of the blade body 129 to form an opening 133. Like the first inner tube 128, the inner tube 131 has a large number of perforations 132. One end of a cylindrical spacer 124 having the same diameter as the mixing element 122 is joined to the end edge of the mixing element 122. The length of the spacer 124 in the axial direction (longitudinal direction) is preferably in the range of 0.1 to 10 times the total length of the mixing element 122. The total length of the spacer 124 is not limited to this range and can be selected and used as appropriate.

  One end of the left rotation type mixing element 123 is joined to the other end of the spacer 124. The left rotation type mixing element 123, like the right rotation type mixing element 122, will not be described in detail, but a cylindrical passage tube 134 and a plurality of spiral-shaped members installed in the passage tube 134. A left rotation type first blade body 135 is provided. The blade body 135 is formed of a porous body having a large number of perforated holes 136. A cylindrical first inner tube 137 having a drilled hole inside the blade body 135 (center portion) is arranged over the entire length of the first blade body 135 as in FIG. The inner cylindrical tube 137 has a plurality of spiral left-rotating second blades 138 and is formed of a porous body having a number of perforations. A cylindrical second inner tube is arranged inside the blade body 138 (center portion) to form an opening 133. Like the first inner tube 137, this inner tube is formed with a number of perforations. The other end of the left rotation type mixing element 123 is joined to the same spacer 124 as described above, and the same right rotation type mixing element 122 is joined via this spacer to form a static fluid mixer 121. is doing. The static fluid mixer 121 is composed of two mixing elements 122 and one mixing element 123. However, the static fluid mixer 121 is not limited to this, and at least one mixing element is used for static fluid mixing. A mixer may be formed. The number of mixing elements, the rotation angle, the direction of rotation, and the number of blades are appropriately selected and used according to the application.

(Application 1)
FIG. 17 is a schematic partial longitudinal sectional view showing an application example when the mixing element according to the embodiment of the present invention is applied to a distillation column type gas-liquid contact apparatus. The distillation tower 139 is formed by arranging a cylindrical casing 140 and mixing elements 141 a, 141 b, 141 c, 141 d in the casing 140. The mixing elements 141 a, 141 b, 141 c, and 141 d are locked at predetermined positions by a mixing element support 142 provided in the casing 140. The manhole 143 is formed in the casing 140 with a member of a mixing element, a structure and dimensions that allow an operator to carry in and out.

  In the distillation column 139 configured as described above, the gas (FA) rising and the liquid (FB) rising in the distillation column 139 are passed counter-currently through the mixing element 141, and the gas and the liquid are stirred. Mixed and gas-liquid is in full contact. By applying this distillation column 139 to flash distillation, steam distillation or the like, it is possible to separate, purify and recover foreign substances in the liquid.

  By using the mixing element according to the present invention as the packing for the distillation column, the gas velocity in the distillation column can be processed at a gas velocity in the range of 1.5 to 5 times that of the conventional packing, and the equipment cost is low. Become. In addition, the tower height is lowered by improving the gas-liquid contact efficiency, enabling operation with low pressure loss, and reducing the amount of steam supplied. Furthermore, since the driving operation range is wide, operation management becomes easy. Furthermore, the production capacity is easily improved by exchanging with the packing of the existing distillation column. The replacement work of the filling can be easily performed through the manhole. Furthermore, the diameter of the opening of the mixing element can be minimized (for example, 50 mm or less) compared to a distillation column using a conventional static mixer, and the gas-liquid contact efficiency is further improved. The element is easy to manufacture and can be manufactured and installed in a narrow distillation column. Furthermore, it becomes easy to manufacture a large-diameter (1 m or more) distillation column, and a large-capacity treatment is possible.

(Application example 2)
FIG. 18 is a schematic partial longitudinal sectional view showing an application example when the mixing element according to the embodiment of the present invention is applied to an absorption tower type gas-liquid contact device. The absorption tower 144 is formed by arranging a cylindrical casing 145 and mixing elements 146a, 146b, 146c, 146d in the casing 145. The mixing elements 146a, 146b, 146c, and 146d are locked in place by a mixing element support 147 provided in the casing 145. The manhole 148 is formed in the casing 145 with a structure and dimensions that allow a member of the mixing element to be carried in and out and a worker to enter and exit.

  In the absorption tower 144 configured in this way, the gas (FA) and the liquid (FB) descending in the absorption tower 144 flow in the mixing element 146 in parallel, and the gas and the liquid are stirred and mixed. , Gas-liquid contact well. By applying this absorption tower 144 to gas absorption, gas cooling, and dust removal operations, it is possible to separate, purify, recover and remove harmful substances in the gas.

By applying the mixing element according to the present invention as a packing for an absorption tower, the gas speed in the absorption tower can be processed at a gas speed in the range of 1.5 to 10 times that of the conventional packing, and the equipment cost is low. Become. Further, the improvement in gas-liquid contact efficiency reduces the tower height and the tower diameter, and enables operation with a low pressure loss, thereby saving space and energy. Furthermore, since the driving operation range is wide, operation management becomes easy. Furthermore, the production capacity is easily improved by exchanging with the packing of the existing absorption tower. The replacement work of the filling can be easily performed through the manhole. Furthermore, compared to an absorption tower using a conventional static mixer, the diameter of the opening of the mixing element can be minimized, so that the gas-liquid contact efficiency is improved and a large diameter (1 m The above makes it easy to manufacture the mixing element. Furthermore, an absorption tower having a large diameter (1 m or more) can be easily manufactured, and an absorption tower for treating a large air volume (30000 m ³ / Hr or more) becomes inexpensive.

  1, 10, 20, 29, 38, 47, 54a, 54b, 54c, 54d, 63, 64, 64a, 64b, 64c, 73, 73a, 73b, 73c, 82, 82a, 82b, 82c, 93, 94, 103, 113, 122, 123, 141a, 141b, 141c, 141d, 146a, 146b, 146c, 146d ... mixing elements, 2, 11, 21, 30, 39, 48, 55, 65, 74, 83, 125 , 134 ... passage pipe, 3, 12, 22, 49, 56, 66, 75, 84, 96, 104, 114, 126 ... right-rotating first blade body, 6, 16, 43, 51, 59, 69, 78, 87, 98, 106, 129... Right rotation type second blade body, 31, 40, 135... Left rotation type first blade body, 25, 34, 116, 138. Rotating type second blade body, 5, 14, 24, 33, 42, 50, 58, 68, 77, 86, 97, 105, 115, 128, 137 ... first inner tube, 8, 18, 27 , 36, 45, 52, 61, 71, 80, 89, 99, 107, 117, 131 ... second inner tube, 4, 7, 13, 15, 17, 19, 23, 26, 32, 35 , 41, 44, 57, 60, 67, 70, 76, 79, 85, 88, 127, 130, 132, 136... Hole, 9, 28, 37, 46, 53, 62, 72, 81, 90 , 100, 108, 118, 133 ... opening, 91, 101, 111, 121 ... static fluid mixer, 92, 102, 112, 140, 145 ... casing, 95, 110, 120, 124 ... spacer, 109, 119 ... space, 39 ... distillation column, 144 ... absorption tower, 142 and 147 ... support, 143 and 148 ... manhole

Claims (9)

A cylindrical passage tube through which fluid flows;
A right-handed or left-handed spiral first blade body installed in the passage tube;
A first inner tube disposed in the axial center of the first blade body;
A right-handed or left-handed spiral second blade body installed in the first inner tube;
A second inner tube disposed in the axial center of the second blade body,
The first blade body and the second blade body are formed of a porous body ,
The lengths of the first blade body and the second blade body in the axial direction of the passage tube are different.
Mixing element, characterized in that there. The mixing element according to claim 1, wherein a diameter of the first inner tube is 10 to 60% of a diameter of the passage tube. The mixing element according to claim 1 or 2, wherein a diameter of the second inner tube is 10 to 30% of a diameter of the first inner tube. The mixing element according to any one of claims 1 to 3, wherein an aperture ratio of the first blade body and the second blade body is 5 to 95%.   5. The mixing element according to claim 1, wherein the first inner tube is disposed at a part of the first blade body in the axial direction. A cylindrical passage tube through which a fluid flows, a right-handed or left-handed spiral first blade body provided in the passage tube, and a first disposed at the axial center of the first blade body An inner tube, a right-handed or left-handed spiral second blade provided in the first inner tube, and a second inner tube arranged in the axial center of the second blade The first blade body and the second blade body are formed of a porous body, and the lengths of the first blade body and the second blade body in the axial direction of the passage tube are different from each other.
A static fluid mixer comprising at least one mixing element .   The static fluid mixer according to claim 6, wherein the right-handed and left-handed mixing elements are alternately arranged in a cylindrical casing via spacers. A cylindrical passage tube through which a fluid flows, a right-handed or left-handed spiral first blade body provided in the passage tube, and a first disposed at the axial center of the first blade body An inner tube, a right-handed or left-handed spiral second blade provided in the first inner tube, and a second inner tube arranged in the axial center of the second blade The first blade body and the second blade body are formed of a porous body, and the lengths of the first blade body and the second blade body in the axial direction of the passage tube are different from each other.
At least one or more mixing elements are arranged in a distillation column type gas-liquid contact device through which a fluid flows in a countercurrent flow . A cylindrical passage tube through which a fluid flows, a right-handed or left-handed spiral first blade body provided in the passage tube, and a first disposed at the axial center of the first blade body An inner tube, a right-handed or left-handed spiral second blade provided in the first inner tube, and a second inner tube arranged in the axial center of the second blade The first blade body and the second blade body are formed of a porous body, and the lengths of the first blade body and the second blade body in the axial direction of the passage tube are different from each other.
At least one or more mixing elements are arranged in a distillation column type gas-liquid contact device through which liquid flows in parallel flow .

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