JPH0234653B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid collection device in which the liquid that is made to flow when dispersing or collecting the liquid is dispersed or collected at a uniform flow rate and with equal residence time.

When dispersing or collecting liquid, use a funnel-shaped liquid collector, a liquid collector with a cylinder partitioned diagonally, or a device that allows liquid to flow in and out simultaneously from several locations on the same circumference and separates it as it moves away from the inflow and outflow areas. A liquid separation device with a narrow cross section is used.
However, when using a funnel-shaped liquid concentrator, for example, when dispersing liquid, the liquid that flows in from the central inlet is dispersed by the conical expanded tube part. The distance from the inlet to the outflow port is shorter than the outflow ports in the peripheral area, and the pressure loss per unit flow rate is also smaller, so the flow rate is correspondingly larger and the residence time of the liquid from the inlet to the outlet is shorter. A phenomenon occurs.

This phenomenon also occurs when a funnel-shaped liquid collector is used to collect liquid, and the residence time of liquid flowing in from the central inlet is shorter than that of liquid flowing in from the peripheral inlets. This leads to the outlet.

Since the conventional funnel-shaped liquid separator had the above-mentioned characteristics, when attempting to perform adsorption separation of liquid using such a funnel-shaped liquid separator, there were drawbacks as described below.

In other words, if the above-mentioned funnel-shaped liquid separator is used in an adsorption separation device that separates a certain liquid A from another liquid B in an adsorption layer, the liquid A to be extracted first on the line connecting the centers of the funnels. When the removal of liquid B to be taken out next has finished, the liquid to be taken out first is still on the line parallel to the line connecting the peripheries of the bowl shapes and connecting the centers of the bowl shapes. There was a drawback that complete adsorption separation of the two liquids could not be carried out because the removal of A was not completed. A similar problem occurred when a liquid concentrator was used that allowed liquid to flow in and out simultaneously from several locations around the circumference.

In addition, in a liquid collector in which a cylinder is diagonally partitioned as disclosed in JP-A No. 48-9977, the positions of the liquid inflow and outflow nozzles attached to the disperser and the liquid collector, respectively, are set at symmetrical positions. The length of the flow path from the inlet of the liquid collector to the outlet of the liquid collector was made equal. With this device, the flow path length is equalized and the pressure drop can be equalized, so the flow distribution has the advantage of being more even than when using a funnel-shaped liquid concentrator. Since the flow path length from the disperser inflow nozzle to the packed bed is shorter in the part closer to the disperser inflow nozzle when it flows into the bed, the liquid that flows simultaneously from the disperser nozzle reaches the packed bed earlier. It ends up. However, since there is generally diffusion in the direction perpendicular to the flow within the packed bed, mixing of liquid A and liquid B occurs within the packed bed.
Separation performance is lower than when dispersion and collection are performed at the same time in a packed bed at a uniform flow rate.

The inventors of the present invention have conducted intensive research to solve the drawbacks of such conventional liquid collectors and liquid collectors, and have found that they have an inlet/outlet on one side and an inlet/outlet on the other side, and the inlet/outlet and the inlet/outlet are connected to a branching flow. It is equipped with a plurality of branch plates connected by channels, and in each branch plate, the ratio of the number of inlets and outlets communicating with the inlet and outlet is the same for all the inlets and all the branch flow passages. We have invented a liquid separation device in which the flow path conditions are set to be the same, and the inlet and outlet of one branch plate are connected to the inlet and outlet of the next branch plate one after another.

The condition of the branch channels in each branch plate being the same means that the volumes of the branch channels from the liquid inlet/outlet to the liquid inlet/outlet are the same, and the volumes of the branch channels from the liquid inlet/outlet to the liquid inlet/outlet are the same. The pressure loss exhibits the same value corresponding to the flow rate within a predetermined range flowing through the branch flow path.

In this liquid separation/collection device, the number of branches or collections connected to each inlet/outlet in each branch plate is the same, and the flow path conditions of the branch channels belonging to the same branch plate are the same. By connecting the inlet and outlet of one branching plate and the next branching plate one after another, each flow path condition and liquid distribution or collection from the liquid inlet and outlet of the first branching plate to the liquid inlet and outlet of the last branching plate are exactly the same. Therefore, the liquid in the liquid separating device flows out from the inlet and outlet of the last branching plate at the same flow rate and with the same residence time.

Moreover, this device can be easily and inexpensively manufactured by connecting a plurality of plate-shaped branch plates.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid separation device according to the present invention will be explained below with reference to the drawings.

Fig. 1 is a perspective view of one embodiment of the liquid separating device according to the present invention, Fig. 2 is a plan view of the first branch plate in Fig. 1, and Fig. 3 is a cross section taken along the line AA in Fig. 2. Figure 4 is a plan view of the second branch plate in Figure 1, Figure 5 is a sectional view taken along line B-B in Figure 4, and Figure 6 is a plan view of the third branch plate in Figure 1. Plan view, Figure 7 is a sectional view taken along line CC in Figure 6,
FIG. 8 is a plan view of the spacer installed at the end of the liquid separating device in FIG. 2, FIG. 9 is a sectional view taken along the line DD in FIG. 8, and FIG. A plan view of the spacer to be attached first,
11 is a cross-sectional view taken along the line E--E in FIG. 10, FIG. 12 is a plan view of the first branch plate of the same embodiment, and FIG. 13 is a cross-sectional view taken along the line F--F in FIG.
Figure 4 is a plan view of the second branch plate of the same example, and the first
Figure 5 is a sectional view taken along line GG in Figure 14, and Figure 16.
The figure further shows a plan view of the first branch plate of another embodiment of the device of the present invention, and FIG. 17 shows H-H in FIG. 16.
A line sectional view, FIG. 18 is a plan view of one embodiment of the branch plate used in the device of the present invention, FIG. 19 is a sectional view taken along the line II in FIG. 18, and FIG. FIG. 21 is a schematic diagram of the orifice, FIG. 22 is a perspective view of another embodiment of the liquid separating device according to the present invention, and FIG. 23 is the first branch plate of the same embodiment. Fig. 24 is a sectional view taken along the J-J line in Fig. 23.
Fig. 5 is a plan view of a spacer installed between the first and second branch plates of the same embodiment, Fig. 26 is a plan view of the second branch plate of the same embodiment, and Fig. 27 is a plan view of the spacer installed between the first and second branch plates of the same embodiment. 26
28 is a sectional view taken along line K--K in FIG. 26, FIG. 29 is a plane view of the spacer installed between the second and third branch plates of the same example. 30 is a plan view of the third branch plate of the same embodiment, FIG. 31 is a sectional view taken along the line MM in FIG. 30, and FIG. FIG. 33, a perspective view of the embodiment, is a schematic diagram showing the state of formation of liquid channels in the liquid separation device according to the present invention.

In the drawing, 1 is a branch plate, and this branch plate 1 has a liquid inlet/outlet 1a on one side and a liquid inlet/outlet 1c on the other side.
are provided, and each one liquid inlet/outlet 1a and a plurality of liquid inlets/outlets 1c are connected by a branch flow path 1b. Reference numeral 2 denotes a spacer such as a gasket, which is installed as necessary with both or one side in contact with the surface of the branch plate 1, and this spacer 2 does not have a branch flow path formed therein. In one branch plate 1, the number of liquid inlets and outlets 1c that communicate with the liquid inlets and outlets 1a is constant for all liquid inlets and outlets 1a. However, if the branching plate 1 is different, the number of liquid inlets and outlets 1c relative to the liquid inlets and outlets 1a may be different. For example, the present invention shown in FIG. 1 using the branching plate 1 and spacer 2 shown in FIGS. 2 to 9 Apparatus (hereinafter, Example 1
In the branch plate 1 shown in FIGS. 2 and 3, one liquid inlet/outlet 1a communicates with four liquid inlets/outlets 1c, and in the branch plate 1 shown in FIGS. 4 and 5, one liquid Any combination is possible such that the inlet/outlet 1a communicates with the three liquid inlets/outlets 1c.

The branch channel 1b connecting the liquid inlet/outlet 1a and the liquid inlet/outlet 1c of the branching plate 1 is the liquid inlet/outlet of the branching plate 1 as in the first branching plate 1 (FIGS. 2 and 3) of the first embodiment. Even if a groove is dug on the same surface as 1c and a flow path is formed between the branch plate 1 or the spacer 2 stacked next to form the branch flow path 1b, the results shown in FIGS.
The first branch plate 1 (FIGS. 12 and 13) of the device of the present invention (hereinafter referred to as Example 2) using the branch plate 1 and spacer 2 shown in FIG. 16 and 17 and 14 and 15. The device of the present invention using the branching plate 1 shown in (hereinafter, Example 3)
) of the first branch plate 1 (Figs. 16 and 17)
As shown in the figure, a branch flow path 1 is formed by a hole penetrating the branch plate 1.
Even if b is formed, the second branch plate 1 (hereinafter referred to as Example 4) of the present invention device shown in FIG. 22 (hereinafter referred to as Example 4) using the branch plate 1 and spacer 2 shown in FIGS. The branch flow path 1b may be formed by a combination of two or more of the above three, as shown in FIGS. 26, 27, and 28).

As a means of making the flow path conditions of the branch channels 1b in one branch plate 1 the same, the branch channels 1b of one plate are made to be symmetrical with each other as shown in FIGS. 2 to 7. By using means or by digging grooves of different shapes as shown in FIGS. 18 to 21, the branch flow path 1b is formed.
In order to make the volume of each branch flow path 1b the same and to achieve the same pressure loss corresponding to the flow rate at a flow rate within a predetermined range, pressure adjustment is performed in the form of an orifice as shown in Fig. 20 or in the form of a ventilate as shown in Fig. 21. It is possible to adopt a means of providing a part in some or all of the branch channels.

If the flow path conditions of the branch flow paths 1b are made the same by setting the branch flow paths 1b of one branch plate 1 symmetrically, the flow path conditions will be automatically made the same without providing a pressure adjustment part. This is desirable because it is easy to manufacture.

Further, as shown in FIG. 32, in the case of a large flow rate, if necessary, a liquid branching device 3 may be connected in front of the device of the present invention by branching the piping and setting the same flow path conditions.

The functions and effects of the liquid separating device according to the present invention having such a configuration will be explained with reference to the schematic diagram shown in FIG. 33.

First, the liquid flowing from the liquid inlet/outlet 1a of the first branch plate 1 is equally distributed into an integer of 2 or more when it reaches the liquid inlet/outlet 1c via the branch flow path 1b. Next, the liquid flowing out from each liquid inlet/outlet 1c of the first branch plate 1 is further uniformly dispersed into an integer of 2 or more in the second branch plate 1. The liquid that has been uniformly dispersed by the branch plates 1 in this manner is very finely dispersed when it reaches the liquid inlet/outlet 1c of the last branch plate 1. That is, at the same time, the liquid flowing in from the liquid inlet/outlet 1a of the first branching plate 1 flows out at the same flow rate from each of the liquid inlet/outlets 1c of the branching plate 1, and flows out at the same flow rate from each of the liquid inlets/outlets 1a of the next branching plate 1. The liquid flows in at the same time, is similarly branched one after another through each branch plate 1, and simultaneously flows out from the liquid inlet/outlet 1c of the last branch plate 1 at the same flow rate.

In addition, when collecting liquid in the opposite manner to the above-mentioned dispersion, the liquid separating device according to the present invention is installed so that the flow flows from the liquid inlet/outlet 1c of the branching plate 1 to the liquid inlet/outlet 1a of the first branching plate 1. do it.

In this way, the liquid separating device according to the present invention disperses or collects the liquid to such an extent that the liquid flowing in from one side is forced to flow out from the other side, and at the same time, the liquid does not remain in the device and at the same time. Since the inflowing liquid flows out at the same time at the same flow rate, as a result, for example, there are branch plates 1 above and below the above-mentioned liquid adsorption/separation device facing the adsorption/separation device.
If the device of the present invention in which the liquid inlets and outlets 1c and the liquid inlets and outlets 1a are uniformly arranged is used, the liquid that flows simultaneously from the liquid inlet and outlet 1a of the first branching plate 1 will be the liquid that is uniformly present in the last branching plate 1. Entrance/exit 1
The liquid that simultaneously flows into the packed bed at the same flow rate through C, and then flows out of the packed bed at the same time, is collected at the same flow rate through the liquid inlet/outlet 1c that is uniformly present in the first branch plate 1, and is sequentially transferred to each branch. The liquid is collected one after another on the plate 1 and simultaneously flows out from the inlet/outlet 1a of the last branching plate 1, so even if separation is performed in the same manner in the adsorption/separation device, the liquid does not flow out without being separated when it flows out from the adsorption/separation device. As a result, adsorption separation efficiency can be significantly improved. It is particularly effective for adsorption separation when high purity separation is required, such as separation of rare elements, xylene, and isotope separation, or when the separation coefficient is small.

Further, when dispersing or collecting a slurry in which a solid substance or the like is suspended or emulsified in a liquid, using the apparatus of the present invention is effective because the slurry is uniformly dispersed or collected.

In addition, since the liquid separation device according to the present invention is made of stacked plate-shaped bodies, the structure is simple and can be manufactured at low cost. Furthermore, it is strong in strength and can be easily enlarged, so it can be used for large-diameter adsorption separation towers, etc. The effect is especially great when applied to, and its industrial value is extremely large.

Examples using the device of the present invention and comparative examples are shown below.

Example Inner diameter 100mm, length 1 with jacket on outer periphery
In a glass cylinder of m, 0.25 gr dry resin/CC wet resin, which is a Cl type anion exchange resin made by chloromethylating a styrene divinylbenzene copolymer and then quaternary ammonium using trimethylamine, was placed.
A chlorine-type resin with a degree of cross-linking of 6% and a particle size of 100 to 200 mesh was uniformly filled to a height of 80 cm, and a liquid collection device consisting of branch plates and spacers shown in Figs. 2 to 9 was installed above and below. Prepare the two installed packed towers,
In each of these two packed towers, ferric sulfate 0.05
A mixed aqueous solution containing 0.6 moles of sulfuric acid was allowed to flow through the ion exchange resin until sufficient equilibrium was reached, so that ferric ions were adsorbed onto the resin.

After that, a mixed aqueous solution 2 containing 0.04 mole of uranyl chloride [ ²³⁵ U/ ²³⁸ U = 0.0072 (molar ratio)] and 0.2 mole of sulfuric acid was dropped at a rate of 1/hr from the top of the first packed column, and the mixture was added dropwise to the top of the first packed column. U () with a length of about 11.5cm
An adsorption zone was formed. Furthermore, a mixed aqueous solution of 0.05 mol of titanium trichloride and 0.2 mol of sulfuric acid was added to the resin-packed tower.
The U() adsorption zone adsorbed on the anion exchange resin was moved to the bottom of the column by feeding from the top of the column at a rate of 1.5 per hour while maintaining the temperature at 40°C. Next, the aqueous solution flowing out from the bottom of the first packed tower was supplied to the top of the second packed tower through a pipe with an inner diameter of 8 mm to form a U() adsorption zone in the second packed tower, and then By flowing a mixed aqueous solution of titanium trichloride and sulfuric acid directly to the top of the second packed column without passing it through the first packed column, the U() adsorption zone in the second packed column is moved downward. U flows out from the bottom of the second packed tower together with the aqueous solution.
() The adsorption zone was separated and fractionated U () Samples were taken from the front and rear ends of the adsorption zone and the isotope ratio of the contained uranium was measured using a mass spectrometer. ²³⁵ U/ ²³⁸ (molar ratio) was 0.00694 and 0.00758, respectively, indicating excellent separation efficiency.

Comparative Example The same amount as in the example was prepared by filling the same amount of the anion exchange resin used in the example in the glass cylinder used in the example, and using two packed towers with dowel-shaped liquid collectors installed above and below. Samples were collected from the end and rear end of the U() adsorption zone that flowed out together with the aqueous solution from the bottom of the second packed tower, and the isotope ratio of the contained uranium was measured using a mass spectrometer. However, the isotope abundance ratios ²³⁵ U/ ²³⁸ (molar ratio) were 0.00702 and 0.00750, respectively, and the separation effect was inferior to that of the above-mentioned example.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the liquid separating device according to the present invention, Fig. 2 is a plan view of the first branch plate in Fig. 1, and Fig. 3 is a cross section taken along the line AA in Fig. 2. Figure 4 is a plan view of the second branch plate in Figure 1, Figure 5 is a sectional view taken along line B-B in Figure 4, and Figure 6 is a plan view of the third branch plate in Figure 1. Plan view, Figure 7 is a sectional view taken along line CC in Figure 6,
FIG. 8 is a plan view of the spacer installed at the end of the liquid separating device in FIG. 2, FIG. 9 is a sectional view taken along the line DD in FIG. 8, and FIG. A plan view of the spacer to be attached first,
11 is a cross-sectional view taken along the line E--E in FIG. 10, FIG. 12 is a plan view of the first branch plate of the same embodiment, and FIG. 13 is a cross-sectional view taken along the line F--F in FIG.
Figure 4 is a plan view of the second branch plate of the same example, and the first
Figure 5 is a sectional view taken along line GG in Figure 14, and Figure 16.
The figure further shows a plan view of the first branch plate of another embodiment of the device of the present invention, and FIG. 17 shows H-H in FIG. 16.
A line sectional view, FIG. 18 is a plan view of one embodiment of the branch plate used in the device of the present invention, FIG. 19 is a sectional view taken along the line II in FIG. 18, and FIG. FIG. 21 is a schematic diagram of the orifice; FIG. 22 is a perspective view of another embodiment of the liquid separating device according to the present invention; FIG.
Figure 3 is a plan view of the first branch plate and the second branch plate of the same embodiment.
Figure 4 is a sectional view taken along line J-J in Figure 23, and Figure 25.
The figure is a plan view of a spacer installed between the first and second branch plates of the same embodiment, FIG. 26 is a plan view of the second branch plate of the same embodiment, and FIG. 28 is a sectional view taken along line KK in FIG. 26, and FIG. 29 is a sectional view taken along line LL in FIG. 26.
A plan view of the spacer installed between the second and third branch plates, FIG. 30 is a plan view of the third branch plate of the same example, and FIG. 31 is a cross section taken along line MM in FIG. 30. FIG. 32 is a perspective view of an embodiment of a liquid separating device according to another embodiment of the present invention, and FIG. 33 is a schematic diagram showing the state of formation of liquid channels in the liquid separating device according to the present invention. DESCRIPTION OF SYMBOLS 1... Branch plate, 1a... Liquid inlet/outlet, 1b... Branch channel, 1c... Liquid inlet/outlet, 2... Spacer, 3... Liquid branching device.

Claims (1)

[Scope of Claims] 1. A plurality of branching plates each having an inlet/outlet on one side and an inlet/outlet on the other side, and in which the inlet/outlet and the inlet/outlet are connected by a branch flow path, each of which has an inlet/outlet on the other side. The ratio of the number of inlets and outlets communicating with the inlets and outlets in the plate is the same for all the inlets and the flow path conditions of all the branch channels are set to be the same, and the inlet and outlet of the branch plate and the next A liquid separating device characterized in that the inlets and outlets of the branching plates are connected one after another. 2. The liquid separating device according to claim 1, wherein the branch channels in each branch plate are set symmetrically and the channel conditions are set to be the same.