JP5721587B2 - Dissolution separation tank and gas-liquid mixing dissolution apparatus - Google Patents

Description

  The present invention relates to a dissolution / separation tank that dissolves a gas in a liquid and further separates a gas that has not been dissolved, and a gas-liquid mixing and dissolution apparatus using the dissolution / separation tank.

  As shown in FIG. 4, a gas-liquid mixing and dissolving device used as a microbubble generating device that generates microbubbles such as microbubbles is a gas-liquid mixed fluid supplied from a vortex pump that mixes gas in the liquid. The gas-liquid mixed fluid taken out from the outlet 3 provided at the lower part of the dissolution tank 1 is dissolved in the liquid by being jetted into the tank from the inlet 2 provided at the upper part of the dissolution tank 1, and the dissolution tank 1 1 is led to a gas-liquid separation tank 4 arranged on the side of 1, and the gas not dissolved in the liquid is separated by this gas-liquid separation tank 4, and only the liquid in which the gas is dissolved at a high concentration is separated from the liquid outlet 5. There is a gas-liquid mixing and dissolving device in which the gas is supplied to necessary facilities and the gas is discharged from the vent 6.

  In addition, a gas-liquid mixing and dissolving apparatus in which a plurality of dissolution tanks are sequentially arranged in the horizontal direction (see, for example, Patent Document 1), a dissolution tank function is provided in the upper part of one tank and a separation tank function is provided in the lower part. There is also a gas-liquid mixing and dissolving apparatus (see, for example, Patent Document 2).

JP 2001-129377 A JP 2002-273183 A

  Since the gas-liquid mixing and dissolving apparatus as described above uses a vertically long dissolution tank, the size is increased in the height direction, and a vortex pump or the like must be disposed in the lateral direction of the dissolution tank. There is also a problem that becomes larger.

  This invention is made | formed in view of such a point, and it aims at providing a compact melt | dissolution separation tank and a gas-liquid mixing melt | dissolution apparatus.

Invention described in 請 Motomeko 1 includes a horizontal cylindrical tank body to the horizontal direction is the longitudinal direction, is provided along the longitudinal direction on one longitudinal side of the tank body, it is supplied under pressure A gas-liquid mixed fluid pressure inlet for introducing the gas-liquid mixed fluid into one side of the tank body in the longitudinal direction, and from the inside of the tank body to the other side in the longitudinal direction. The dissolution tank part for dissolving the gas in the tank body, and the tank body from the bottom of the tank body in the other side in the longitudinal direction, and formed in a rising slope from the middle part toward the opposite side of the dissolution tank part A gas-liquid separation plate for gas-liquid separation having an inclined surface and forming an opening above the upper end; and a lower portion on the other side in the longitudinal direction of the tank body, the upper end of the gas-liquid separation plate being A liquid outlet for taking out the liquid separated below the tank body Provided above the other longitudinal side of the tank body, through the gas-liquid separator plate comprising a gas release port for discharging the gas separated above the tank body to the outside, the gas-liquid separator plate And a liquid flow control plate located above the liquid outlet is horizontally provided between the tank body and the end face plate on the other side in the longitudinal direction of the tank body. The liquid flow control plate includes the gas-liquid separation plate. This is a dissolution / separation tank in which a liquid passage hole is opened at a position closest to the plate and farthest from the liquid outlet.

The invention described in claim 2, the dissolution separation tank according to claim 1 Symbol mounting, disposed below the dissolution separation tank, the gas-liquid mixture fluid into the gas-liquid mixed fluid pressure inlet portion of the dissolved separating tank Is a gas-liquid mixing and dissolving device equipped with a vortex pump for supplying pressure under pressure.

According to the invention 請 Motomeko 1, since the horizontal longitudinal direction and the dissolution tank portion horizontal cylindrical tank body to and gas-liquid separation plate is provided, the gas dissolution efficiency and the gas-liquid separation in Compact An efficient dissolution separation tank can be provided. That is, when the gas-liquid mixed fluid supplied under pressure is introduced from the gas-liquid mixed fluid pressure inlet portion into one side in the longitudinal direction of the tank body, it is formed from one side in the longitudinal direction of the tank body to the other side in the longitudinal direction. The gas-liquid mixed fluid is injected into the liquid in the tank body so as to entrain the gas layer portion to be produced, so that high gas dissolution efficiency is obtained and the gas in a bubble state that does not dissolve in the liquid is a gas-liquid separation plate A gas layer formed in the upper part of the tank body that is efficiently separated from the liquid that rises with the liquid rising along the tank and descends toward the liquid outlet provided at the lower part of the other side of the tank body Since it becomes a part and is discharged | emitted outside from the gas vent provided in the upper part of the longitudinal direction other side part of a tank main body, high gas-liquid separation efficiency is obtained. In particular, by providing a gas-liquid mixed fluid pressure inlet in a wide range along the longitudinal direction of the horizontal tank body, the contact area due to collision of gas and liquid in the longitudinal direction in the tank body is increased. The gas and liquid can be stirred as a whole to promote dissolution, and in order to separate undissolved bubbles, the gas-liquid separation plate is inclined upward from the middle to the opposite side of the dissolution tank. By creating the upward flow by guiding the gas-liquid mixed fluid to the vicinity of the gas layer in the opening by the inclined surface formed in the upper part, the bubbles can be efficiently separated even in a small tank by winding the bubbles around the gas layer. . Furthermore, the liquid flow control plate provided horizontally between the gas-liquid separation plate and the end face plate on the other side in the longitudinal direction of the tank body is positioned closest to the gas-liquid separation plate and farthest from the liquid outlet. Since the liquid passage hole is opened, it is possible to efficiently provide resistance to the flow of liquid toward the liquid outlet through the gas-liquid separation plate, and higher gas-liquid separation efficiency can be obtained.

According to the second aspect of the present invention, in addition to the compact dissolution / separation tank, the vortex pump for pressurizing and supplying the gas-liquid mixed fluid is disposed below the dissolution / separation tank, so that the plane installation space is compact. A liquid mixing and dissolving apparatus can be provided.

It is sectional drawing which shows one Embodiment of the melt | dissolution separation tank which concerns on this invention. It is the II sectional view taken on the line of FIG. It is a circuit diagram which shows one Embodiment of the gas-liquid mixing dissolution apparatus provided with the dissolution separation tank same as the above. It is sectional drawing which shows the conventional melt | dissolution separation tank.

  Hereinafter, the present invention will be described in detail based on the embodiment shown in FIGS.

  As shown in FIGS. 1 and 2, the dissolution / separation tank 11 includes a horizontally-placed cylindrical tank body 12 whose longitudinal direction is the horizontal direction. An end plate 13 is welded to one end of the tank body 12 in the longitudinal direction (the right end in FIG. 1). The end plate 13 is provided with a drain port 14, which is normally closed by a valve. It has been. On the other hand, an end face plate 15 is attached to a flange portion 12f at the other longitudinal end portion (left end portion in FIG. 1) of the tank body 12 with a bolt 17 and a nut 18 via a packing 16.

  On the one side in the longitudinal direction of the tank body 12 (right side in FIG. 1), the gas-liquid mixed fluid pressure inlet 21 for introducing the pressurized gas-liquid mixed fluid A into the one side in the longitudinal direction of the tank body 12. However, it is provided along a longitudinal direction of the tank body 12 over a wide range of almost half of the entire length of the tank body 12 in the longitudinal direction. The gas-liquid mixed fluid pressure inlet 21 is formed in the upper surface of the tank body 12 with a plurality of gas-liquid mixed fluid injection holes 22 arranged linearly along the longitudinal direction of the tank body 12. An inlet frame 23 is welded to the upper surface of the tank body 12 so as to surround the gas-liquid mixed fluid press-fitting hole 22, and a flange 23f provided along the periphery of the inlet frame 23 is covered via a seal member 23s. The plate 24 is attached by bolts (not shown), and the instrument plate installation port 25 and the gas-liquid mixed fluid supply port 26 are provided on the lid plate 24.

  The gas-liquid mixed fluid pressure inlet 21 is provided with slit-like gas-liquid mixed fluid injection holes elongated in the longitudinal direction of the tank body 12 in place of the plurality of gas-liquid mixed fluid injection holes 22. You may do it.

  A dissolution tank 27 for dissolving a gas in the liquid is provided from one longitudinal side of the tank body 12 toward the other longitudinal side (left side in FIG. 1).

  A gas-liquid separation plate 28 for gas-liquid separation is erected in the other side portion in the longitudinal direction of the tank body 12 so as to rise from the bottom of the tank body 12 to the middle. In this gas-liquid separation plate 28, a slope portion 28s formed in an upward inclined shape from the middle portion corresponding to the height of the center of the tank body 12 toward the side opposite to the dissolution tank portion 27 is bent with respect to the lower portion. Has been. An opening 29 is provided above the upper end of the slope portion 28s of the gas-liquid separation plate 28.

  A liquid outlet 31 is provided below the end face plate 15 on the other side in the longitudinal direction of the tank body 12 to take out the liquid separated below the tank body 12 via the gas-liquid separator 28.

  A gas vent 32 for discharging the gas separated above the tank body 12 via the gas-liquid separation plate 28 to the outside is provided at the upper part of the end face plate 15 on the other side in the longitudinal direction of the tank body 12.

  A liquid flow control plate 33 located above the liquid outlet 31 is horizontally provided between the gas-liquid separation plate 28 and the end face plate 15 on the other side in the longitudinal direction of the tank body 12, and this liquid flow control plate In 33, a liquid passage hole 34 is opened at a position closest to the gas-liquid separation plate 28 and farthest from the liquid outlet 31.

  Between the gas-liquid separation plate 28 and the end face plate 15, a liquid extraction passage 35 is formed that guides the liquid passing through the upper end of the gas-liquid separation plate 28 to the liquid outlet 31 through the liquid hole 34. The gas-liquid separation plate 28 is installed between the liquid extraction passage 35 and the dissolution tank 27.

  FIG. 3 shows a gas / liquid mixing / dissolving device 41, which includes a dissolution / separation tank 11 and a vortex pump 42 that pressurizes and supplies the gas / liquid mixed fluid A to the gas / liquid mixed fluid pressure inlet 21 of the dissolution / separation tank 11. doing. The vortex pump 42 is disposed below the dissolution / separation tank 11 and is integrally configured by a frame (not shown).

  The vortex pump 42 sucks the liquid L from the liquid suction port 45 connected to the liquid suction pipe 44 having the flow rate adjusting valve 43 and sucks the gas G such as air from the gas suction port 46 and is rotated in the pump body 47. The gas and liquid are mixed and stirred by a large number of vortex flows generated in the impeller while being transferred by the impeller, and the gas-liquid mixed fluid A is discharged from the discharge port 48. The discharge port 48 is connected to the gas-liquid mixed fluid pressure inlet 21 of the dissolution / separation tank 11 by a pipe 49.

  A pressure gauge 51 is installed at the gas-liquid mixed fluid pressure inlet 21 of the dissolution / separation tank 11, and the pressure of the gas layer formed in the upper part of the dissolution / separation tank 11 is measured by the pressure gauge 51.

  In the pipe 52 connected to the gas vent 32 of the dissolution / separation tank 11, a gas vent amount adjusting valve 53 for adjusting the gas vent flow rate is provided, and the pipe connected to the liquid outlet 31 of the dissolution / separation tank 11 54 is provided with a liquid discharge amount adjustment valve 55 for adjusting the liquid discharge flow rate, so that while looking at the pressure gauge 51, the opening degree of the gas discharge amount adjustment valve 53 is adjusted and the liquid discharge amount adjustment valve 55 is opened. By adjusting the degree, the thickness (height) of the gas layer part 56 and the liquid layer part 57 is adjusted so as to maintain an appropriate balance together with each flow rate of the gas and liquid.

  The pipe 58 that has passed through the gas venting amount adjustment valve 53 is connected to the surplus gas separator 61. Is detected by the liquid level detection switch 64 provided in the surplus gas separator 61 when the liquid level in the surplus gas separator 61 rises to a predetermined position, and the electromagnetic valve 63 is opened and the surplus gas separator 61 is opened. Is absorbed into the vortex pump 42.

  The upper part of the surplus gas separator 61, that is, the gas reservoir 65 is connected to the drain pipe 67 via the pipe 66.

  Next, functions and effects of the embodiment shown in FIGS. 1 to 3 will be described.

  The vortex pump 42 sucks in the liquid L from the liquid suction port 45 and sucks in gas such as air from the gas suction port 46, and transfers these gas and liquid by the impeller rotated in the pump body 47 by a large number of vortex flows. After mixing and stirring, the gas-liquid mixed fluid A is discharged from the discharge port 48.

  The gas-liquid mixed fluid A is pressurized and supplied to the gas-liquid mixed fluid pressure inlet 21 of the dissolution / separation tank 11 through the pipe 49, passes through the inlet frame 23, and is dissolved from the plurality of gas-liquid mixed fluid injection holes 22. The liquid is injected into the tank main body 12 and moved in the lateral direction (left side in FIG. 1) while being vigorously mixed and stirred in the tank main body 12, and the dissolution of the gas into the liquid in the dissolution tank 27 is promoted. .

  At this time, by providing the gas-liquid mixed fluid press-fitting hole 22 or the slit-like gas-liquid mixed fluid press-fitting hole in a wide range almost half the total length in the longitudinal direction of the horizontal tank main body 12, these press-fitting holes are formed in the tank main body 12. In this way, the contact area due to the collision of the gas and the liquid is increased over a wide range in the longitudinal direction in the tank body 12, and the gas and the liquid are stirred in the entire tank to promote dissolution.

  At this stage, the gas that has not been dissolved in the liquid floats up as bubbles and accumulates in the upper part of the tank body 12. In particular, the bubbles in the liquid that move upward along the gas-liquid separation plate 28 are gas bubbles. It is easy to separate from the liquid moving downward at the tip of the liquid separation plate 28, becomes the gas layer part 56 at the upper part in the tank body 12, and is discharged from the gas vent 32 to the outside of the tank body 12.

  That is, in order to separate undissolved bubbles, a slope portion inclined in a rising inclination from the middle portion of the gas-liquid separation plate 28 corresponding to the substantially central level of the tank body 12 toward the side opposite to the dissolution tank portion 27. Efficient even in a small tank by providing 28s and creating an upward flow by guiding the gas-liquid mixed fluid to the vicinity of the gas layer part 56 in the opening 29 by this inclined surface part 28s and winding up the bubbles to the gas layer part 56 Air bubbles can be separated well.

  On the other hand, the liquid descending so as to go around the tip of the gas-liquid separation plate 28 collides with the liquid flow control plate 33, meandering so as to shake off fine bubbles, and the liquid flow hole 34 of the liquid flow control plate 33. Through the liquid outlet 31, it is supplied to a facility that uses an external gas solution, such as a bathtub, and generates fine bubbles such as microbubbles in the bathtub.

  As described above, since the dissolution tank 27 and the gas-liquid separation plate 28 are provided in the horizontal cylindrical tank body 12 with the horizontal direction as the longitudinal direction, it is compact and dissolves with good gas dissolution efficiency and gas-liquid separation efficiency. A separation tank 11 can be provided.

  That is, when the gas-liquid mixed fluid A supplied under pressure is introduced from the gas-liquid mixed fluid pressure inlet 21 into one side in the longitudinal direction of the tank body 12, the other in the longitudinal direction from the one side in the longitudinal direction of the tank body 12. Since the gas-liquid mixed fluid is injected into the liquid in the tank body 12 so as to involve the gas layer part 56 formed in the side part, high gas dissolution efficiency is obtained and gas in a bubble state that does not dissolve in the liquid Is efficiently separated from the liquid rising along with the gas rising along the gas-liquid separation plate 28 and descending toward the liquid outlet 31 provided at the lower part of the other side in the longitudinal direction of the tank body 12. Since the gas layer part 56 formed in the upper part of 12 is discharged to the outside from the gas vent 32 provided in the upper part of the other side part of the tank body 12 in the longitudinal direction, high gas-liquid separation efficiency is obtained. It is done.

  In particular, by providing the gas-liquid mixed fluid pressure inlet 21 in a wide range along the longitudinal direction of the horizontally placed cylindrical tank body 12, the contact area due to the collision of gas and liquid in the longitudinal direction in the tank body 12 is increased. Increasing and stirring the gas and liquid throughout the tank can facilitate dissolution. Further, in order to separate the undissolved bubbles, the gas-liquid mixed fluid is opened by the slope portion 28s formed in an upward slope from the middle portion of the gas-liquid separation plate 28 toward the side opposite to the dissolution tank portion 27. By creating an upward flow by guiding to the vicinity of the gas layer portion 56 in the portion 29 and winding the bubbles around the gas layer portion 56, the bubbles can be efficiently separated even in a small tank.

  Furthermore, the liquid flow control plate 33 provided horizontally between the gas-liquid separation plate 28 and the end face plate 15 on the other side in the longitudinal direction of the tank body 12 is closest to the gas-liquid separation plate 28 and the liquid outlet 31 Since the liquid passage hole 34 is opened at the position farthest from the liquid, it is possible to efficiently provide resistance to the flow of liquid toward the liquid outlet 31 via the gas-liquid separation plate 28, and higher gas-liquid separation efficiency can be obtained. .

  Further, in addition to the compact dissolution / separation tank 11, the vortex pump 42 for pressurizing and supplying the gas-liquid mixed fluid is disposed below the dissolution / separation tank 11, so that the plane-installation space is compact and the gas-liquid mixture / dissolution apparatus 41 is provided. Can provide.

  The present invention can be used by those who are involved in the manufacturing, sales, and industrial manufacturing of the dissolution / separation tank 11 and the gas-liquid mixing / dissolving device 41.

A Gas-liquid mixed fluid G Gas L Liquid
11 Dissolution separation tank
12 Tank body
15 End plate
21 Gas-liquid mixed fluid pressure inlet
27 Dissolution tank
28 Gas-liquid separator
28s Slope
29 opening
31 Liquid outlet
32 Vent
33 Liquid flow control plate
34 Fluid flow hole
41 Gas-liquid mixing and dissolving equipment
42 Eddy current pump

Claims (2)

A horizontal tank body with the horizontal direction as the longitudinal direction;
A gas-liquid mixed fluid pressure inlet portion that is provided along the longitudinal direction on one side of the tank body in the longitudinal direction and introduces the gas-liquid mixed fluid supplied under pressure into the side of the tank body in the longitudinal direction;
A tank portion that is provided from one side in the longitudinal direction of the tank body toward the other side in the longitudinal direction, and dissolves gas in the liquid;
The tank body has a slope portion that is erected from the bottom portion of the tank body in the other longitudinal direction of the tank body, and has a slope portion that is formed to rise upward from the middle portion to the side opposite to the dissolution tank portion, and above the upper end. A gas-liquid separation plate for gas-liquid separation that forms an opening in
A liquid outlet provided at the lower part of the other side in the longitudinal direction of the tank body, and for taking out the liquid separated below the tank body through the upper end of the gas-liquid separator;
Provided at the upper part of the other side in the longitudinal direction of the tank body, and a gas vent for discharging the gas separated above the tank body through the gas-liquid separation plate to the outside,
Between the gas-liquid separation plate and the end face plate on the other side in the longitudinal direction of the tank body, a liquid flow control plate located above the liquid outlet is provided horizontally,
The aforementioned liquid flow control plate, closest dissolve the separation tank you characterized in that liquid passing hole farthest from the fluid outlet is opened to the gas-liquid separation plate. A dissolution separation tank according to claim 1 Symbol placement,
A gas-liquid mixing and dissolving device, comprising: a vortex pump disposed under the dissolution and separation tank and supplying a gas-liquid mixed fluid under pressure to the gas-liquid mixed fluid pressure inlet of the dissolution and separation tank .

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