JP5683132B2 - Concentrator - Google Patents

Description

  The present invention relates to a concentration apparatus used for concentration treatment of various liquids to be processed.

  As is well known, fats and oils such as fatty acids, various beverage foods such as soups and juices, pharmaceuticals such as various vitamins and antibiotics, various synthetic resins such as caprolactam, petrochemical products such as various synthetic rubbers, waxes and detergents, etc. When a concentration process is performed by heating and evaporating the various process liquids, a concentrating device that provides heating means for heating the process liquid on the outer periphery of a substantially cylindrical processing drum into which the process liquid flows and stirs and concentrates with a stirring blade is provided. (For example, refer to Patent Document 1).

  In this type of concentrating apparatus, the processing drum is disposed so as to be substantially horizontal, and a supply port for introducing the processing liquid into the processing drum is provided above one side in the axial direction of the processing drum and the other side is provided. A discharge port for discharging the concentrated processing liquid is provided below.

JP 2007-313381 A

  However, in the process of stirring and concentrating the liquid to be processed in the concentrator, vapor is generated from the liquid to be processed, and when this vapor is floated and diffused in the processing drum, efficient concentration processing is hindered, The quality of the concentrated processing liquid may be deteriorated.

  The present invention has been made in consideration of such circumstances, and in a concentrating apparatus that concentrates a liquid to be processed by rotating a stirring blade by a rotating shaft extending in a substantially horizontal direction, the vapor generated from the liquid to be processed is reduced. An object of the present invention is to provide a concentrator capable of performing an efficient concentration process while suppressing floating and diffusion.

In order to achieve the above object, the present invention proposes the following means.
According to the first aspect of the present invention, there is provided a rotating shaft that is rotatably supported around an axis extending in a substantially horizontal direction , an inner peripheral wall surface having a substantially cylindrical shape, and a supply port for introducing a liquid to be processed and a processing liquid. A processing drum having an outlet for discharging, an agitation blade formed around the rotating shaft, and capable of rotating with a gap from an inner peripheral wall surface of the processing drum, and a drive for rotating the rotating shaft A vapor unit that receives vapor generated in the processing drum is disposed on at least one side in the axial direction of the processing drum, and is disposed between the processing drum and the vapor unit. A vapor passage that is provided and circulates the vapor from the processing drum to the vapor section; condensate holding means that holds the condensed liquid of the vapor and suppresses the condensate from moving to the processing drum; and the vapor In the department Characterized in that it comprises a cooling pipe provided around the rotating shaft.

According to the concentrating device of the present invention, the vapor generated in the processing drum is circulated to the vapor section through the vapor flow path, and the condensed liquid generated by condensing the vapor in the vapor section is processed by the condensate holding means on the processing drum side. It is suppressed that it flows into.
As a result, the floatation and diffusion of the vapor is suppressed, and the vapor condensate can be easily removed. As a result, the liquid to be treated can be concentrated efficiently.

  The invention described in claim 2 is the concentrating device described in claim 1, characterized in that a suction means is connected to the vapor portion.

  According to the concentrating device of the present invention, since the suction means is connected to the vapor part, the vapor can be efficiently moved from the processing drum to the vapor part.

  The invention described in claim 3 is the concentrator according to claim 1 or 2, wherein the processing drum is provided with a heating means.

  According to the concentrating apparatus of the present invention, since the heating means is provided in the processing drum, the vapor can be evaporated and removed from the processing liquid in a short time, and as a result, the processing liquid is efficiently concentrated. can do.

Invention of Claim 4 is the concentration apparatus of any one of Claim 1 to 3, Comprising: The cooling jacket for accelerating | stimulating condensation of vapor | steam is arrange | positioned at the said vapor | steam part. It is characterized by being.

  According to the concentrating device of the present invention, since the cooling means is arranged in the vapor part, it is possible to promote the condensation of the vapor moved to the vapor part and to suppress the floating and diffusion of the vapor.

  According to the concentrating device of the present invention, it is possible to efficiently remove the vapor generated from the liquid to be processed and suppress the vapor floating and diffusion in the processing drum. As a result, the liquid to be processed can be efficiently concentrated.

It is a sectional side view showing the outline of the concentration device concerning one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a diagram showing an outline of a concentrating device according to an embodiment of the present invention, and reference numeral 1 indicates the concentrating device.

  As shown in FIG. 1, the concentrator 1 penetrates the processing drum 5, the vapor drum (vapor unit) 6, the processing drum 5 and the vapor drum 6 through which the liquid M1 to be processed is stirred and concentrated, and is substantially omitted. A rotating shaft 11 that is rotatably supported around an axis L extending in the horizontal direction, and a plurality of peripheral shafts are formed around the rotating shaft 11 at equal intervals in the circumferential direction with a predetermined gap from the inner peripheral wall surface 5a of the processing drum 5. The stirring blade 13 and the driving device (driving means) 25 for rotating the rotating shaft 11 are provided.

  In this embodiment, the concentrating device 1 includes a heating unit, a cooling unit 12, and a vacuum pump (suction unit) 15. The cooling unit 12 includes a cooling pipe 12 a provided on the rotating shaft 11. The cooling jacket 12b is provided on the vapor drum 6.

  The processing drum 5 has a shape in which the inner peripheral wall surface 5a has a substantially cylindrical shape. For example, the processing liquid M1 is applied to the peripheral wall portion of the processing drum 5 on the upper portion on one side in the axis L direction. A supply port 19 for supplying the inside of the processing drum 5 is formed, and a discharge port 21 for discharging the processing liquid M2 from the processing drum 5 is opened at a lower portion around the other side.

  Further, the peripheral wall portion of the processing drum 5 has a double structure in which a space constituting a heat medium jacket (heating means) 37 is formed between the inner peripheral wall surface 5 a and the outer peripheral wall surface. The supply port 39 and the discharge port 41 are opened to the outside of the processing drum 5, the supply port 39 is connected to the heat medium source, and the discharge port 41 is connected to the heat medium recovery circuit.

With this configuration, for example, a heat medium such as steam or hot water is supplied from the supply port 39 and discharged from the discharge port 41, whereby the heat medium is circulated through the heat medium jacket 37 through the inner peripheral wall surface 5a. The treatment liquid M1 can be heated.
As a result, vapor from the liquid M1 is efficiently generated in a short time, and the liquid M1 is efficiently concentrated.

The processing drum 5 has an opening 5 b on one side in the direction of the axis L, and the opening 5 b is connected to the opening on the other side of the vapor drum 6.
An end plate 5c is provided on the other side in the direction of the axis L, and a bearing portion 7 for pivotally supporting the rotary shaft 11 is disposed at the center of the end plate 5c.
The bearing portion 7 can seal the inside of the processing drum 5 and the outside (atmosphere) by, for example, a mechanical seal, and the other side of the processing drum 5 is closed by the end plate 5 c and the bearing portion 7.

  The vapor drum 6 is formed in a substantially cylindrical shape, is positioned between the processing drum 5 and the driving device 25 on one side of the processing drum 5 and is arranged in series with the processing drum 5. A discharge port 60 for discharging the gas is opened.

Further, a wall portion (condensate holding means) 6 b is formed in an annular shape over the inner periphery of the concentrating device 1 on the outer peripheral side of the opening 5 b of the processing drum 5, and the vapor condensate T moves to the processing drum 5. It has come to suppress.
Further, between the inner periphery of the wall portion 6b and the outer peripheral surface of the rotary shaft 11, a vapor flow path 6a is formed for the vapor generated in the processing drum 5 to move to the vapor drum 6 side.

  The vapor drum 6 has a double structure in which a space constituting a cooling jacket (cooling means) 12b is formed between the inner peripheral wall surface and the outer peripheral wall surface. The supply port 61 and the discharge port are provided in the cooling jacket 12b. 62 is opened to the outside of the vapor drum 6, the supply port 61 is connected to the cooling medium source, and the discharge port 62 is connected to the cooling medium recovery circuit.

  With such a configuration, for example, by supplying a cooling medium such as cooling water from the supply port 61 and discharging it from the discharge port 62, the cooling medium is circulated through the cooling jacket 12 b to cool the inner peripheral wall surface of the vapor drum 6. The vapor in contact with the inner peripheral wall surface can be cooled to promote vapor condensation.

Further, the vapor drum 6 has a suction opening 6c opened at an upper portion on one side, connected to the vacuum pump 15 at the suction opening 6c, and formed with an end plate 6d at an end portion on one side. A bearing portion 9 is disposed at the center of 6d.
The bearing portion 9 can seal the inside and the outside (atmosphere) of the vapor drum 6 by, for example, a mechanical seal, and one side of the vapor drum 6 is sealed by the end plate 6 d and the bearing portion 9.

  As a result, the concentrating device 1 connects the processing drum 5 and the vapor drum 6, closes the supply port 19, the discharge port 21, and the discharge port 60, and connects the vacuum pump 15 to the suction opening 6c. When 15 is sucked, the inside of the concentrating device 1 is decompressed or vacuumed, and the vapor can be efficiently moved from the processing drum 5 to the vapor drum 6 side.

The rotating shaft 11 passes through the processing drum 5 and the vapor drum 6, is rotatably supported by a bearing portion 9 on one side and a bearing portion 7 on the other side, and is rotated by a driving device 25.
The rotary shaft 11 has a cooling pipe (cooling means) 12a wound around the rotary shaft 11 in the vapor drum 6, and condenses the vapor by circulating a coolant such as cooling water through the cooling pipe 12a. The paper that is promoted and floats can be efficiently reduced.

The stirring blades 13 are formed in a plate shape so as to be accommodated in the processing drum 5 that is long in the direction of the axis L, and are radially outward from the outer peripheral surface of the rotating shaft 11 at equal intervals in the circumferential direction of the rotating shaft 11. A plurality are provided toward.
Further, when the rotating shaft 11 is rotated, the stirring blade 13 rotates while maintaining a gap of, for example, about 2 mm from the inner peripheral wall surface 5a of the processing drum 5.

The drive device 25 includes a motor 26 and a transmission mechanism 27, and the rotary shaft 11 is connected to the motor 26 via the transmission mechanism 27 and is rotated by the motor 26.
The transmission mechanism 27 includes, for example, a pulley 28 attached to the rotary shaft 11, a pulley 29 attached to the drive shaft of the motor 26, and a belt 30 wound between the pulley 28 and the pulley 29. The rotation of the rotated pulley 29 is transmitted to the pulley 28.

Hereinafter, the operation of the concentration apparatus 1 will be described.
First, a heat medium such as steam is supplied from the supply port 39 to the heat medium jacket 37, and the heat medium jacket 37 is circulated to heat the inner peripheral wall surface 5 a of the processing drum 5.
Further, a cooling medium is circulated through the cooling means 12 to cool the vapor drum 6 so that vapor condensation is easily promoted.
Next, the vacuum pump 15 is started to depressurize the inside of the concentration apparatus 1.
Next, the liquid M1 to be treated is introduced into the treatment drum 5 from the supply port 19 and the motor 26 is driven to rotate the rotating shaft 11 and the stirring blade 13.
The rotating shaft 11 and the stirring blade 13 rotate, and the liquid M1 to be processed is blown to the inner peripheral wall surface 5a of the processing drum 5 by the stirring blade 13 to form a thin film, and the water in the liquid M1 to be processed is efficiently evaporated and processed. The moisture of the liquid M2 is adjusted. Vapor is generated from the liquid M1 to be processed by, for example, flying the liquid M1 to be processed onto the inner peripheral wall surface 5a of the processing drum 5 and heating the stirring blade 13.
The vapor generated in the processing drum 5 is sucked by the vacuum pump 15 through the suction opening 6c, discharged to the outside of the vapor drum 6, and collected by a collecting device (not shown).
On the other hand, the vapor that has not been sucked from the suction opening 6 c is cooled and condensed by the cooling means 12 to become the condensate T, and falls to the bottom of the vapor drum 6. The condensate T dropped and stored in the vapor drum 6 is prevented from moving toward the processing drum 5 by the wall 6b.
Further, the vapor that has moved from the processing drum 5 to the vapor drum 6 is suppressed from flowing into the processing drum 5 because the inside of the vapor drum 6 is decompressed more than the inside of the processing drum 5.
The concentrated processing liquid M2 is discharged from the discharge port 21 of the processing drum 5.
Further, the condensate T stored in the vapor drum 6 is discharged through the discharge port 60.

According to the concentrating device 1, since the wall 6 b is provided, the vapor generated in the processing drum 5 is efficiently condensed in a short time after moving to the vapor drum 6. Floating can be suppressed.
In addition, since the condensed liquid T that has been moved to the vapor drum 6 and condensed is held by the vapor drum 6, the movement of the condensed liquid T to the processing drum 5 can be suppressed.
As a result, in the processing drum 5, the processing liquid M1 can be concentrated efficiently and with high quality to obtain the processing liquid M2.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.
For example, in the above embodiment, the case where the concentrating device 1 includes the cooling unit 12, the heat medium jacket 37, and the vacuum pump 15 has been described, but the cooling unit 12, the heat medium jacket 37, and the vacuum pump 15 It is good also as a structure provided with one part, and it is good also as a structure which is not provided with all of these.

  Moreover, in the said embodiment, the case where the cooling means 12 was comprised by the cooling piping 12a provided in the circumference | surroundings of the rotating shaft 11 located in the vapor drum 6, and the cooling jacket 12b formed in the circumference | surroundings of the vapor drum 6 was demonstrated. However, for example, any one of the cooling pipe 12a and the cooling jacket 12b, or another cooling mechanism may be added thereto.

  Moreover, in the said embodiment, although the wall part 6b provided as a condensate holding | maintenance means demonstrated the case where it was formed cyclically | annularly over the inner periphery of the concentration apparatus 1 in the boundary part of the process drum 5 and the vapor | steam drum 6, For example, a cough may be formed only on the lower side of the boundary between the processing drum 5 and the vapor drum 6 as the condensate holding means, or the bottom of the vapor drum 6 may be made lower than the bottom height of the processing drum 5 to concentrate. The surface may be positioned lower than the bottom portion height of the processing drum 5 so that the condensate holding means may be used.

  Moreover, in the said embodiment, although the axis line L of the concentration apparatus 1 was formed in the horizontal direction, in the range which the condensate T stored by the vapor drum 6 does not flow into the process drum 5 side, it is the axis line L. If are placed sideways, it is not necessary to be completely horizontal.

Moreover, in the said embodiment, although the case where the vapor drum 6 was arrange | positioned at the drive device 25 side of the concentration apparatus 1 was demonstrated, you may arrange | position on the opposite side to the drive device 25 of the concentration apparatus 1, for example, You may arrange | position to the drive device 25 side and the opposite side of the concentration apparatus 1. FIG.
Moreover, in the said embodiment, although the case where a vapor part was comprised by the substantially cylindrical vapor drum 6 was demonstrated, shapes other than cylindrical shapes, such as a polygonal column and a rectangular parallelepiped, may be sufficient, for example.

L axis M1 liquid to be processed M2 processing liquid T condensate 1 concentrator 5 processing drum 5a inner peripheral wall surface 6 vapor drum (vapor part)
6a Vapor flow path 6b Wall (Condensate holding means)
11 Rotating shaft 12 Cooling means 12a Cooling pipe 12b Cooling jacket 13 Stirring blade 15 Vacuum pump (suction means)
19 Supply port 21 Discharge port 25 Drive device (drive means)
37 Heat medium jacket (heating means)

Claims (4)

A rotating shaft rotatably supported around an axis extending in a substantially horizontal direction ;
A processing drum in which an inner peripheral wall surface has a substantially cylindrical shape, and a supply port for supplying a liquid to be processed and a discharge port for discharging a processing liquid are opened;
A stirring blade formed around the rotating shaft and capable of rotating with a gap from an inner peripheral wall surface of the processing drum;
A concentrating device comprising a driving means for rotating the rotating shaft,
On at least one side in the axial direction of the processing drum, a vapor portion that receives the vapor generated in the processing drum is disposed,
A vapor passage that is provided between the processing drum and the vapor section and distributes the vapor from the processing drum to the vapor section; holds the condensed liquid of the vapor; and the condensate moves toward the processing drum. Condensate holding means for suppressing ,
And a cooling pipe provided around the rotating shaft in the vapor section . The concentrator according to claim 1,
A concentrating device, wherein a suction means is connected to the vapor section. The concentrating device according to claim 1 or 2,
The concentrating device, wherein the processing drum is provided with heating means. The concentrator according to any one of claims 1 to 3,
The vaporizer is characterized in that a cooling jacket for promoting vapor condensation is disposed in the vapor section.

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