JP2009243644A - Flow distributor and flow distribution system - Google Patents

Abstract

Provided is a flow distributor that can distribute the flow of a multiphase fluid so that the proportions of the respective phases are equal to each other, has a simple structure, and is excellent in durability.
An inflow pipe 44 into which a flow flows, a plurality of outflow pipes 38 that are open at an end of the inflow pipe 44 and an opening 38a surrounds the central axis of the inflow pipe 44, and the inflow pipe 44 A plate 51 a that is arranged on the outflow pipe 38 side and extends radially outward from the central axis of the inflow pipe 44 includes a first partition 51 having the number of openings 38 a of the outflow pipe 38, and the outflow pipe 38 more than the first partition 51. And a second partition 52 having a number of openings 38a of the outflow pipe 38 and a plate 52a extending radially outward from the central axis of the inflow pipe 44, and viewed from the axial direction of the inflow pipe 44. The plates 52 a of the two partitions 52 are respectively disposed between the plates 51 a of the first partition 51.
[Selection] Figure 4

Description

  The present invention relates to a flow distributor and a flow distribution system suitable for, for example, refinery facilities.

Conventionally, in refinery facilities, the distribution of the flow of the gas-liquid mixed phase fluid usually uses a T-shaped branch pipe. However, in this case, since the two-phase physical properties of the gas-liquid mixed phase fluid are different from each other, the flow of each phase becomes uneven due to the influence of gravity or the like. Therefore, there is a problem that it is difficult to evenly distribute the flow of the gas-liquid mixed phase fluid, that is, to distribute the flow so that the ratio of the gas and liquid is equal. In addition to the T-shaped branch pipe, as shown in Patent Documents 1 to 6, a flow distributor that distributes the flow of the gas-liquid mixed phase fluid into a plurality of parts is also known.
Japanese Patent No. 3480392 Japanese Utility Model Publication 3-38598 Japanese Patent No. 3408777 Japanese Patent No. 3387387 JP 2003-90646 A JP-A-7-12429

  However, these flow distributors have a problem that the structure is complicated and the durability is poor.

  The present invention has been made in view of the above problems, and the two different gas-liquid mixed-phase fluids, solid-liquid mixed-phase fluids, and the like are different so that the ratios of the respective phases such as the gas phase, the liquid phase, and the solid phase are substantially equal. An object of the present invention is to provide a flow distributor and a flow distribution system that can distribute a flow of a mixed phase fluid including phases or more, that is simple in structure, and excellent in durability.

  The flow distributor according to the present invention includes an inflow pipe into which a fluid flows, a plurality of outflow pipes, a first partition, and a second partition. The plurality of outflow pipes are disposed at the end of the inflow pipe so that the openings surround the central axis of the inflow pipe. The first partition is disposed on the outflow pipe side in the inflow pipe and has a plate extending radially outward from the central axis of the inflow pipe and having the number of openings of the outflow pipe. The second partition is arranged farther from the outflow pipe than the first partition and has a plate extending radially outward from the central axis of the inflow pipe and having the number of openings of the outflow pipe. When viewed from the axial direction of the inflow pipe, the plates of the second partition are arranged between the plates of the first partition.

  According to this, the flow divided | segmented by the 2nd partition is further divided | segmented by the 1st partition, and is distributed to each outflow pipe via opening. Therefore, the flow of the mixed phase fluid can be easily distributed so that the ratios of the gas phase, the liquid phase, and the solid phase are substantially equal to each other. Also, such a flow distributor has a simple structure and excellent durability.

  Here, as viewed from the axial direction of the inflow pipe, the plates of the first partition are preferably arranged between the openings of the outflow pipe. Thereby, the multiphase fluid divided | segmented by the 1st partition can be selectively discharged | emitted from one opening.

  Moreover, it is also preferable that the plate of the first partition is disposed on each opening of the outflow pipe as viewed from the axial direction of the inflow pipe. Thereby, the effect of further dividing the flow at the opening of the outflow pipe is obtained.

  Here, the openings of the plurality of outflow pipes are arranged at equiangular intervals around the axis of the inflow pipe, and the respective plates of the first partition and the respective plates of the second partition are arranged at equiangular intervals around the axis of the inflow pipe, respectively. Preferably they are arranged. According to this, it is easy to distribute the flow into equal volumes.

  In addition, it further includes a third partition which is arranged farther from the outflow pipe than the second partition and extends radially outward from the central axis of the inflow pipe, and has a number of openings in the outflow pipe, from the axial direction of the inflow pipe As seen, the plates of the third partition are also preferably arranged between the plates of the second partition. Thereby, it is excellent in uniform distribution performance.

  The flow distribution system which concerns on this invention is a flow distribution system provided with the mixer which mixes a multiphase fluid, and the above-mentioned flow distributor connected to the downstream of the stirrer.

  It is possible to provide a flow distributor and a flow distribution system that can distribute the flow of the mixed phase fluid so that the ratio of each phase such as the gas phase, the liquid phase, and the solid phase is substantially equal, and that has a simple structure and excellent durability. .

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. In addition, the dimensional ratio in each drawing does not necessarily match the actual dimensional ratio.

(First embodiment)
FIG. 1 is a schematic side view of a flow distribution system 100 according to the first embodiment. The flow distribution system 100 includes a mixer 10 that mixes the gas-liquid mixed phase fluid that has flowed in via the line L1, and a flow distributor 30 that distributes the flow of the gas-liquid mixed phase fluid supplied from the mixer 10. The fluid distributed by the flow distributor 30 is discharged to the outside through the outflow pipe 38.

  The mixer 10 is a device that mixes or stirs a mixed phase fluid of a gas phase and a liquid phase to improve fluid uniformity and suppress the uneven distribution of the gas phase and the liquid phase. Although the specific form of the mixer 10 is not particularly limited, for example, a static stirrer (static mixer) that mixes and stirs the fluid by applying a shearing force or the like to the flow by a fixed baffle plate or perforated plate, A dynamic stirrer that performs mixing and stirring of fluid by rotating a stirring blade in the fluid or the like can be used.

  Next, the flow distributor 30 will be described with reference to FIGS. The flow distributor 30 includes, in order from the upstream side, a connecting pipe 31 with the mixer 10, a diameter-expanding pipe 33 that expands the pipe diameter, a second pipe 42 that includes the second partition 52, and a first partition 51 that includes the first partition 51. One pipe 41, a flange plate 35 for closing the outlet end of the first pipe 41, and a plurality of outflow pipes 38 for branching the fluid flow are mainly provided. The first pipe 41 and the second pipe 42 constitute an inflow pipe 44.

  The downstream end of the expanded pipe 33 is a flange 33 f, the flange 42 f is provided at both ends of the second pipe 42, and the flange 41 f is provided at both ends of the first pipe 41. The flange 33f of the expanded pipe 33 and the flange 42f of the second pipe 42 face each other, the flange 42f of the second pipe 42 and the flange 41f of the first pipe 41 face each other, and the flange 41f of the first pipe 41 and the flange plate The flanges 35 are opposed to each other by bolts 39a and nuts 39b penetrating the flanges, whereby a flow path from the expanded pipe 33 to the flange plate 35 is formed.

  The lengths of the connection pipe 31 and the diameter expansion pipe 33 are preferably set to the minimum necessary length to suppress the phase separation of the gas-liquid mixed phase fluid mixed in the mixer 10.

  Although the axial direction length of the 1st pipe | tube 41 and the axial direction length of the 2nd pipe | tube 42 are not specifically limited, For example, it can each be 30-300 mm. Moreover, although the internal diameter of the 1st pipe | tube 41 and the 2nd pipe | tube 42 is not specifically limited, For example, it can be set as 100-500 mm.

  A plurality of outflow pipes 38 are fixed through the flange plate 35. Specifically, as shown in FIG. 3A, the opening 38 a of the outflow pipe 38 is disposed so as to surround the central axis of the inflow pipe 44. Further, when viewed from the direction perpendicular to the flange plate 35, the centers of the openings 38a are arranged at equiangular intervals around the central axis. The distance from the central axis to each opening 38a is the same. Further, as shown in FIG. 2, the outflow pipe 38 extends outward from the flange plate 35 in parallel with the axial direction of the inflow pipe 44. Further, the inner diameters of the outflow pipes 38 are the same.

  A first partition 51 is fixed in the first pipe 41, and a second partition 52 is fixed in the second pipe 42. Specifically, as shown in FIG. 4 and the like, for example, the first partition 51 has a shaft 51b disposed along the central axis of the inflow pipe 44 and a plurality of plates 51a extending radially outward from the shaft 51b. is doing. Similarly, the second partition 52 has a shaft 52b disposed along the central axis of the inflow pipe 44, and a plurality of plates 52a extending radially outward from the shaft 52b. The number of plates 51a and the number of plates 52a are equal to the number of openings 38a of the outflow pipe 38, respectively. In addition, the plates 51a and 52a of the respective partitions 51 and 52 have a substantially rectangular plate shape. The axial lengths of the plates 51 a and 52 a correspond to the lengths of the first tube 41 and the second tube 42, respectively, and the first partition 51 is in contact with the flange plate 35. Further, the lengths of the plates 51a and 52a in the radial direction are such that the tip edges thereof can come into contact with the inner surfaces of the first tube 41 and the second tube 42, and the tip of the plate 51a of the first partition 51 is the first. The tip of the plate 52a of the second partition 52 is fixed to the inner surface of the second pipe 42 by welding or the like.

  When viewed from the direction perpendicular to the flange plate 35, that is, from the axial direction of the inflow pipe 44 (see, for example, FIGS. 3A and 4), the plate 51 a of the first partition 51 is connected to each opening 38 a of the outflow pipe 38. One each is arranged between them. Thus, the fluid in each cell C41 surrounded by the pair of plates 51a and the inner wall of the first pipe 41 is selectively discharged from the opening 38a of one outflow pipe 38, respectively.

  Further, when viewed from the direction perpendicular to the flange plate 35, that is, the axial direction of the inflow pipe 44 (see, for example, FIG. 4), the plate 52 a of the second partition 52 is between the plates 51 a of the first partition 51. One by one. Thereby, the fluid in each cell C42 surrounded by the pair of plates 52a and the inner walls of the second pipe 42 is divided into two by the plate 51a of the first partition 51 and flows into the cell C41.

  Further, each plate 51a, 52a is viewed from the axial direction of the inflow pipe 44, and is equiangularly spaced around the central axes 51b, 52b, that is, the angles formed by the two plates across the central axis are the same. It is arranged to become.

  Such a flow distributor 30 is preferably arranged so that the flow direction of the fluid is in the vertical direction, but can be implemented even if it is arranged in other directions, for example, in the horizontal direction.

  Moreover, as a material of the flow distributor 30, materials, such as steel and stainless steel, are mentioned, for example. In particular, various shapes and distribution numbers can be accommodated by forging.

  Furthermore, the fluid used in this embodiment is a gas-liquid mixed phase fluid, that is, a fluid including a gas phase and a liquid phase.

  Next, the operation of the flow distribution system 100 will be described.

  When the gas-liquid mixed phase fluid flows into the mixer 10 via the line L1, the two-phase fluid is mixed in the mixer 10, and the ratio of the liquid phase to the gas phase becomes substantially uniform throughout. Subsequently, the flow of the multiphase fluid made substantially uniform in this way flows into the flow distributor 30. By flowing into the second pipe 42, the flow is divided for each cell C 42 by the second partition 52. Further, when the mixed phase fluid flows into the first pipe 41, the flow of each cell C 42 is divided into each cell C 41 by the first partition 51. Thereafter, the multiphase fluid in each cell C41 is discharged from the corresponding outflow pipe 38, respectively.

  And according to this embodiment, when the flow of the multiphase fluid which came out of the cell C42 enters into the cell C41, it is divided into two. In addition, the structure is simple, the manufacturing is easy, the durability is high, and the maintenance is easy.

  Moreover, since the 1st partition 51 is fixed in the 1st pipe | tube 41, the 2nd partition 52 is fixed in the 2nd pipe | tube 42, and the 1st pipe | tube 41 and the 2nd pipe | tube 42 are being fixed with the flange. Disassembly and cleaning are particularly easy.

(Second embodiment)
The second embodiment will be described with reference to FIGS. Since only the flow distributor 30 is different from the first embodiment in the second embodiment, only this will be described.

  The first point that the flow distributor 30 of the present embodiment is different from the flow distributor 30 of the first embodiment is the structure, fixing method, and position of the first partition 51 and the second partition 52. The first partition 51 and the second partition 52 share one shaft 51b, that is, the plates 51a and 52a are respectively fixed to the shaft 51b. Are integrated. Further, the shaft 51 b passes through the center of the flange plate 35 and is fixed to the flange plate 35 by a nut 39 c. The plates 51 a and 52 a of the first partition 51 and the second partition 52 are disposed in the first pipe 41. Further, the first pipe 41 has neither flange at both ends, and the first pipe 41 is sandwiched between the flange 42f of the second pipe 42 and the flange 35f of the flange plate 35, and is secondly fastened by the bolt 39a and the nut 39c. The pipe 42, the first pipe 41, and the flange plate 35 are fixed.

  The second difference is the extending direction of the outflow pipe 38. In the present embodiment, since the partition members 51 and 52 are fixed to the center of the flange plate 35 by the bolt 39c, the extending direction of each outflow pipe 38 is not the axial direction of the inflow pipe 44 but as the distance from the flange plate 35 increases. It is inclined and fixed to the flange plate 35 so as to be away from the axis.

  This embodiment also has the same effects as the first embodiment.

(Third embodiment)
A third embodiment will be described with reference to FIG. The third embodiment is different from the first embodiment only in the position of the opening 38a of the outflow pipe 38 of the flow distributor 30, and only this will be described.

  In the present embodiment, the outflow pipe 38 is disposed so that the plate 51 a of the first partition 51 is disposed on each opening 38 a of the outflow pipe 38 when viewed from the axial direction of the inflow pipe 44. Thereby, a part of fluid of each cell C41 enclosed by the inner wall of a pair of board 51a and the 1st pipe | tube 41 merges, and will be discharged | emitted from the opening 38a of one outflow pipe 38. FIG. Therefore, it is preferable because a division effect is further obtained at the opening of the outflow pipe 38. Needless to say, such an arrangement of the openings 38a of the outflow pipe 38 may be applied to the flow distributor 30 of the second embodiment.

(Fourth embodiment)
A fourth embodiment will be described with reference to FIG. The fourth embodiment is different from the third embodiment in that a third partition 53 and a fourth partition 54 are provided on the upstream side of the second partition 42 in the flow direction. Similar to the first partition 51 and the second partition 52, the third partition 53 and the fourth partition 54 include a plate 53a, a shaft 53b, a plate 54a, and a shaft 54b, respectively. When viewed from the direction, the plates of the third partition 53 are respectively disposed between the respective plates of the second partition 52, and the plates of the fourth partition 54 are respectively disposed between the respective plates of the third partition 53. ing. Thus, by increasing the number of partitions, more divisions are performed, and more uniform distribution performance is achieved. In the first embodiment and the second embodiment, it goes without saying that the third partition and the fourth partition may be provided similarly.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation aspect is possible. For example, in the above embodiment, the number of outflow pipes 38 is 4, but any number of outflow pipes 38 may be used as long as it is 2 or more. Further, the diameter of the outflow pipe 38, that is, the opening 38a may not be the same. Further, when viewed from the axial direction of the inflow pipe 44, the openings 38a of the outflow pipe 38 may be arranged at equal angular intervals. Moreover, the board 51a of the 1st partition 51 may be arrange | positioned instead of equiangular intervals. Furthermore, the plate 52a of the second partition 52 may be arranged at an equiangular interval. For example, when the diameter of the opening 38a of any outflow pipe 38 is larger than the diameter of the other opening, it is preferable to make the angle formed by the pair of plates 51a corresponding to this opening wider than the others. . In the present invention, even when distributing to different volumes instead of equal volume distribution, the distribution can be performed with the ratio of the gas phase and the liquid phase being substantially the same. Further, the distance from the central axis to each opening 38a is not necessarily the same. Furthermore, the shapes of the plates 51a and 52a of the partition bodies 51 and 52 are not necessarily rectangular. Furthermore, although the said embodiment is provided with two or four partitions in a flow direction, it may be provided with three or five or more partitions in the flow direction. In this case, each adjacent partition In this combination, it is preferable that the plates of one partition body are respectively disposed between the plates of the other first partition body as viewed from the axial direction of the inflow pipe.

  In the above embodiment, the flow of the gas-liquid mixed phase fluid including the liquid phase and the gas phase is distributed. However, the flow is not limited to this as long as it is a mixed phase fluid. For example, a solid-gas mixed phase fluid including a gas phase and a solid phase that is a particle group, a solid-liquid mixed phase fluid including a solid phase and a liquid phase, and a gas-liquid solid mixed phase fluid including a solid phase, a liquid phase, and a gas phase Etc. For example, the solid-gas mixed phase fluid includes a solid-gas mixed phase fluid containing catalyst FCC catalyst particles and gas in an FCC (fluid catalytic cracking) apparatus. More specifically, for example, when the FCC catalyst particles are conveyed by gas and supplied to the magnetic separator, the solid-gas mixed phase fluid needs to be divided and supplied to a plurality of inlets of the magnetic separator. However, if the above-mentioned flow distributor is used, it becomes easy to divide the ratio of the gas and the particles uniformly and supply them to a plurality of inlets.

FIG. 1 is a schematic diagram of a flow distribution system according to the first embodiment. FIG. 2 is a side view of the flow distributor 30 of FIG. 3A is an arrow view along the line IIIa-IIIa in FIG. 2, and FIG. 3B is an arrow view along the line IIIb-IIIb in FIG. FIG. 4 is a partially broken perspective view of FIG. FIG. 5 is a partially broken side view of the flow distributor 30 according to the second embodiment. FIG. 6 is a view taken along the line VI-VI in FIG. FIG. 7 is a partially broken perspective view of the flow distributor 30 according to the third embodiment. FIG. 8 is a partially broken perspective view of the flow distributor 30 according to the fourth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Mixer, 30 ... Flow distributor, 38 ... Outflow pipe, 38a ... Opening, 41 ... First pipe, 42 ... Second pipe, 44 ... Inflow pipe, 51 ... First partition, 51a ... Plate, 52 ... Second partition, 52a ... plate, 100 ... flow distribution system.

Claims (6)

An inflow pipe into which fluid flows,
A plurality of outflow pipes that open at an end of the inflow pipe, and the openings are disposed so as to surround a central axis of the inflow pipe;
A first partition that is disposed on the outflow pipe side in the inflow pipe and extends radially outward from the central axis of the inflow pipe;
A plate that is arranged farther from the outflow pipe than the first partition and extends radially outward from the central axis of the inflow pipe, and a second partition having the number of openings in the outflow pipe,
When viewed from the axial direction of the inflow pipe, the plates of the second partition are arranged between the plates of the first partition, respectively.   The flow distributor according to claim 1, wherein the plate of the first partition is disposed between the openings of the outflow pipe as viewed from the axial direction of the inflow pipe.   2. The flow distributor according to claim 1, wherein the plate of the first partition is disposed on each opening of the outflow pipe as viewed from the axial direction of the inflow pipe. The openings of the plurality of outflow pipes are arranged at equiangular intervals around the axis of the inflow pipe, and the plates of the first partition and the plates of the second partition are respectively equiangularly spaced around the axis of the inflow pipe The flow distributor according to any one of claims 1 to 3, which is arranged as described above.   A third partition having a number of openings of the outflow pipe, the plate being arranged farther from the outflow pipe than the second partition and extending radially outward from a central axis of the inflow pipe; 5. The flow distributor according to claim 1, wherein the plates of the third partition are disposed between the plates of the second partition as viewed from the axial direction.   A flow distribution system comprising: a mixer for mixing a multiphase fluid; and the flow distributor according to claim 1 connected to a downstream side of the stirrer.

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