JP2002320838A - Pressure treatment equipment - Google Patents

Abstract

(57) Abstract: The present invention provides a heating or cooling state under high pressure without reducing heat conduction efficiency by forming a passage through which a medium flows in a wall of a thick pressure-resistant container. An object of the present invention is to provide a pressure processing device that enables processing. SOLUTION: The pressure processing apparatus according to the present invention is a stirrer.
(50), raw material supply port (32) and raw material discharge port (42)
By forming a medium passage (23) in a thick wall portion (21a) of the pressure-resistant container (21) in a sealable thick-walled cylindrical pressure-resistant container (21) formed with Heating or cooling processing is performed in a high thermal efficiency state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure treatment apparatus, and more particularly, to a method for heating a liquid food, a chemical, a chemical product, or the like under high pressure by providing a medium passage in a thick portion of a pressure vessel. The present invention relates to a novel improvement for performing a cooling process with high efficiency.

[0002]

2. Description of the Related Art Conventionally, in the production process of foods, chemicals, chemical products, etc., it is often practiced to heat or cool liquid raw materials. As a general heating or cooling device, the raw materials are supplied to a container having a stirring device, and the outer peripheral surface of the container is heated with a heating medium.
Alternatively, there is a device that stirs raw materials in a container while cooling with a cooling medium. As the heating medium, hot water, hot oil, or the like is used, and as the cooling medium, a CFC-based refrigerant, ammonia, or the like is used. In a container whose temperature is controlled by a heating medium or a cooling medium (the heating medium or the cooling medium is hereinafter referred to as a medium), the raw materials are stirred by a stirrer, and the raw materials in the container are uniformly heated or cooled. And processed.

In the above-mentioned processing, processing is further performed under a pressurized state. The container is a pressure-resistant container, and in such a container, by heating or cooling the raw materials in a pressurized state, the reaction rate or the processing rate is increased, the productivity is improved, and a favorable structural change easily proceeds. . The range of application of such processing in a pressurized state is expanding, and the range of application to the processing in a pressurized state of a higher pressure exceeding 10 MPa is expanding.

[0004]

Since the conventional pressure processing apparatus is configured as described above, there are the following problems. That is, in order to perform the pressure treatment under the high pressure state, a large pressure resistance of the pressure treatment device is required, and the thickness of the container is increased. As a result, when heating from the outer periphery of the pressure processing apparatus, the heat conduction efficiency is reduced, the heating capacity is reduced, and the productivity is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, by providing a medium passage in a thick portion of a pressure-resistant container, the heat transfer efficiency is reduced under high pressure. It is an object of the present invention to provide a pressure processing apparatus capable of performing a processing in a heated or cooled state without any processing.

[0006]

A pressure processing apparatus according to the present invention includes a sealable thick cylindrical pressure-resistant container having a stirring device rotatably built therein and having a raw material supply port and a raw material discharge port formed therein. In the pressure treatment device, a passage for a heating or cooling medium is formed in the wall of the pressure vessel, and the passage communicates with a lateral hole to reciprocate in the axial direction of the pressure vessel. Is formed, the passage is formed of a drill hole, the passage is formed of a groove, and the passage spirally turns in the circumferential direction of the pressure vessel. And a configuration in which a medium chamber is formed on the outer periphery of the pressure-resistant container, and a configuration in which an outlet of the passage communicates with the medium chamber. The pressure capacity Consists of steel, the inner wall of the pressure vessel is configured corrosion resistant coating is provided, also, the pressure vessel is a structure in which the margarine production.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a pressure processing apparatus according to the present invention will be described below with reference to the drawings. FIGS. 1, 2 and 3 show a first embodiment of a processing apparatus according to the present invention, FIGS. 4 and 5 show a second embodiment, and FIGS. 6 to 8 show a third embodiment. It is shown.

FIGS. 1, 2 and 3 show a cooling apparatus in which the medium is made of a refrigerant such as chlorofluorocarbon or ammonia. The medium can be used as a heat treatment device by using a heat medium such as steam or hot water. Reference numeral 10 denotes a pressure processing device having a cylindrical shape as a whole. The pressure processing device 10 has a thick pressure-resistant container 21 having a cylindrical inner hole formed therein, and a rotating container inside the pressure-resistant container 21. It comprises a stirrer 50 incorporated as possible and a medium chamber 60 formed on the outer periphery of the pressure vessel 21.
The pressure vessel 21 further has an upstream lid 30 and a downstream lid 40 mounted so as to seal the walls 21a at both ends of the pressure vessel 21. The main body of the pressure vessel 21 is made of steel, and at least the inner wall 22 of the pressure vessel 21 is provided with a corrosion-resistant coating material lined with a known corrosion-resistant material.

A passage 23 for guiding the refrigerant is provided in the wall 21a. The passage 23 is composed of two sets of passage portions 23a and 23b which reciprocate along the cylindrical axis of the wall 21a.
Are formed. These passage portions 23a, 23b
As shown in FIG. 2, the cylindrical wall 21a is vertically divided into two equal parts by 180 ° and is formed separately on the left and right sides, and supply ports 24a and 24b are provided at the bottom and discharge ports 25 are provided at the top.
a, 25b are formed to open to the outside. That is, each of the passage portions 23a and 23b has a plurality of axial through holes formed in the wall 21a, and both end surfaces of the passage portions 23a and 23b are formed outside the lateral hole 100 with the plug lid 105 through the welding portion 105a as shown in FIG. A series of passages 23 are formed by welding and sealing. Therefore, the supply port 24a passes through the passage 23a to the discharge port 25a, and the supply port 24b passes through the passage 23b to the discharge port 2a.
5b, a series of passages are respectively formed in a half-circumferential portion of the cross section. The supply ports 24a and 24b are respectively provided with supply pipes 26a and 26b that pass through the medium chamber 60 in a non-communication state and protrude to the outside. The outlets 25 a and 25 b communicate with the medium storage tank 12 of the medium chamber 60. Therefore, the method of FIGS. 1 to 3 in which the medium chamber 60 is filled with the medium liquid is a kind of the liquid-filled cooling method. Note that the medium can be forcibly injected from outside the pressure-resistant container 21 through the supply pipes 26a and 26b.

The upstream lid 30 is provided with the stirring device 50.
The hole 31a for mounting the shaft seal 34 and the through hole 31 are formed in the shaft center. From the outer periphery of the upstream side lid 30 to the pressure-resistant container 21
A raw material supply hole 32 is formed in communication with the inner hole of the first material. Further, a preload is applied to the shaft seal 34 at the outer end of the upstream side lid 30 and the drive shaft 5 of the stirring device 50 is
A first bearing 35 for rotatably supporting the bearing 1 and a flange 33 for holding a drain hole 33a are mounted. The upstream lid 30 configured as described above is fastened and fixed to one end surface of the pressure-resistant container 21 in a predetermined pressure-resistant state by fastening means such as bolts.

The downstream lid 40 has a recess 4 at the center of the inner surface.
1 and a raw material discharge hole 4 communicating with the outer surface from the concave portion 41
2 are formed. A support plate 43 having a second bearing 45 for rotatably supporting a distal end shaft 52 of the stirring device 50 and having a raw material flow path 44 formed therein is inserted and fixed in the concave portion 41. The downstream side lid 40 configured as described above is fastened and fixed to the other end surface of the pressure-resistant container 21 in a predetermined pressure-resistant state by fastening means such as bolts.

The stirrer 50 is a rotating body having a substantially rod-like shape as a whole. The drive shaft 51 is supported by the first bearing 35 and the tip shaft 52 is rotated by the second bearing 45. The pressure vessel 21 is inserted into the pressure vessel 21 by being
The raw material flow space 11 is formed between the raw material flow space 11 and the inner wall 22. On the outer periphery of the stirring device 50 located in the pressure vessel 21, stirring blades 55 are arranged at a plurality of positions in the circumferential direction and in the axial direction, and are connected by pins 55 a so as to be swingable in the direction perpendicular to the axis of the stirring device 50. ing. A swivel joint 54 provided outside the first bearing 35 of the drive shaft 51 is provided on the shaft core of the stirring device 50.
A fluid passage 53 in the form of a closed loop having an opening communicating with the fluid passage is formed. The tip of the drive shaft 51 is connected to an electric motor 72 via a speed reducer 71. Therefore,
Even when the drive shaft 51 rotates, the medium can be circulated through the swivel joint 54 held in the fluid passage 53 by the detent 54a even when the drive shaft 51 rotates.

The medium chamber 60 has a cylindrical body 61 for forming the medium storage tank 12 in an outer periphery of the pressure-resistant container 21 in a sealed state. Are provided with upper connection pipes 63, respectively. The medium chamber 60 is provided with a heat insulating material 64.
The outer periphery of the medium is covered with a liquid level sensor (not shown) for monitoring the liquid level in the medium storage tank 12.

Next, the operation of the pressure processing apparatus 10 configured as described above will be described below. First, the raw material supply hole 32 is connected to a raw material supply device (not shown), and the supply pipes 26a and 26b, the lower connection pipe 62, and the upper connection pipe 63 are controllably connected to a medium supply / recovery apparatus (not shown), respectively. With the raw material discharge hole 42 connected to a raw material recovery device (not shown),
Is started, and the stirring device 50 is rotationally driven via the speed reducer 71, and the pressure-resistant container 23 and the stirring device 50 are
In this case, fluid raw materials such as food (margarine), medicine, cosmetics, etc. are supplied to the raw material flowing space 11. In addition, these raw materials must not generate rust or corrosive substances,
1 may be made of stainless steel, but its thermal conductivity is poor.
In the present embodiment, steel having good thermal conductivity is used (1.8 times that of stainless steel), and a thin corrosion-resistant coating material 21A is provided only on the inner surface (the inner wall 22) to increase the thermal conductivity of the entire pressure-resistant container 21.

The cooling medium such as chlorofluorocarbon and ammonia supplied to the supply pipes 26a and 26b is supplied to the supply ports 24a and 24b.
4b through the passage portions 23a, 23b, and the upper outlet 25
a, 25b, overflows from each of the outlets 25a, 25b into the medium storage tank 12, and accumulates in the medium storage tank 12. With respect to the medium stored in the medium storage tank 12, the liquid component is discharged and collected from the lower connecting pipe 62, the vaporized component is exhausted and collected from the upper connecting pipe 63, and the stored amount of the liquid is detected by a liquid level sensor (not shown). Then, the liquid level L is controlled. The pressure-resistant container 21 is cooled from the thick wall 21 a by the medium flowing through the passage portions 23 a and 23 b of the passage 23, and further cooled from the outer surface by the medium stored in the medium storage tank 12 of the medium chamber 60. . The degree of the cooling is controlled by a control device (not shown) based on the amount of the medium supplied from the supply pipes 26a and 26b and the liquid level L in the medium storage tank 12.

The raw material is supplied from a raw material supply device (not shown) into the raw material flow space 11 through the raw material supply hole 32, undergoes a predetermined processing while flowing through the raw material flow space 11, and is discharged from the raw material discharge hole 42. Is done. By controlling the pressure of the discharge downstream portion connected to the raw material discharge hole 42 with a throttle valve or the like and supplying the raw material under pressure, a high-pressure cooling process in the raw material flowing space 11 is realized.
In the raw material flow space 11, the raw material is cooled under pressure from the inner wall 22 of the pressure-resistant container 21 cooled by the medium, and is uniformly cooled by being stirred by the stirring device 50. The stirring blade 55 opens in a direction perpendicular to the axis due to the centrifugal force due to rotation and the resistance of the raw material, and its tip contacts the corrosion-resistant coating material 21 </ b> A on the inner wall 22 of the pressure-resistant container 21. Therefore, the tip of the stirring blade 55 slides on the inner wall 22 and scrapes the raw material from the inner wall 22. As a result, a part of the raw material does not adhere to the inner wall 22 for a long time, and uniform processing is performed.

In the second embodiment shown in FIGS. 4 and 5, the passage 23 formed in the thick wall of the pressure-resistant container 21 is formed by a pipe spirally wound in the circumferential direction. That is, the pressure-resistant container 21 is a double container of the inner container 21b and the outer container 21c, and the spiral passages 23a, 23c are formed in any of the inner and outer containers 21b, 21c by a spiral spiral groove 120.
b, a pair of spirally turning passage portions 23a and 23b are formed independently of each other, and each of the passage portions 23a and 23b The supply ports 24a and 24b are provided in the lower part, and the discharge ports 25a and 25b are provided in the uppermost part in the central part.
Are formed to open to the outside. It should be noted that the pressure processing apparatus 10 of the second embodiment has the above-described passage portions 23a and 23b.
Since the configuration is the same as that of the first embodiment except for the difference in the configuration, the same reference numerals are given to the same portions, and the description thereof is omitted.

The passage 23 is shown in FIGS. 4 and 5 as a pair of spirally turning passages 23 which are independent of each other.
Although each of a and 23b is swirled in a single manner, a plurality of spirally swirling passages may be swirled independently and in multiples.

The cylindrical axial passage 23 formed in the pressure vessel 21 shown in the first embodiment is formed by drilling a hole, but the spirally turning passage 23 shown in the second embodiment is integrally formed. Since it is impossible to directly process the pressure vessel 21 of this type, if the pressure vessel 21 is long, it is impossible to drill a hole. When the passage 23 cannot be machined with the integral pressure-resistant container 21 as described above, the groove 21 is formed by forming the wall 21a of the pressure-resistant container 21 into a double cylindrical structure as in the third embodiment of FIGS. By forming 101, the passage 23 can be easily formed. That is,
A spiral groove 101 is previously formed on the outer periphery of the inner inner container 21b constituting the double structure, or the inner periphery of the outer container 21c on the outer periphery, or both of them, and thereafter, by shrink fitting,
The inner container 21b is inserted into and integrated with the outer container 21c to form the pressure-resistant container 21. Although the above-described liquid-filled medium chamber 60 has been described as being provided outside the pressure-resistant container 21, the medium chamber 60 is not provided in the pressure-resistant container 21, but is provided separately from the pressure-resistant container 21 and connected by piping. As a result, the outer periphery of the pressure-resistant container 21 is
It can also be configured by winding only. Further, the apparatus according to the present invention is not limited to cooling, but can be heated. Further, the heat insulating material can be formed without the heat insulating material 64, and the heat insulating material can be made of a sheet tape. Although the pressure vessel 21 is arranged horizontally, it can be arranged vertically. 4 and 5, the spiral groove 120 shown in FIGS.
Not only c but also the inner container 21b can be formed. Further, the stirring device 50 is provided with a scraping blade 55, but when the liquid viscosity of the raw material is low, a pin kneader type (not shown)
A stirring rotor of a screw type or the like may be provided.

[0020]

According to the pressure processing apparatus of the present invention, the following effects can be obtained by being configured as described above. (1) In the thick-walled cylindrical pressure-resistant container, since the medium passage is formed in the thick-walled container wall, the thick-walled pressure-resistant container is heated by the medium flowing through the thick-walled inner passage, and And the inner surface and the heat conduction thickness become thinner, and the heat conduction efficiency becomes higher. (2) The heat transfer efficiency as a heat exchange container is improved by forming the container from steel and lining a thin corrosion-resistant coating material on the inner surface. (3) Since the medium chamber is formed on the outer periphery of the pressure vessel, the medium passing through the passage is reused to heat or cool the outer surface of the pressure vessel, and the heating or cooling efficiency is further improved. (4) Since the inner container is made of stainless steel by using a double pressure-resistant container, the cost can be reduced as compared with the case where all the inner containers are made of stainless steel. (5) The double container described in the preceding paragraph enables long and large containers. (6) By forcibly circulating the medium passage, the heat transfer efficiency (overall heat transfer coefficient) between the container and the medium is increased.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of a pressure processing apparatus according to the present invention.

FIG. 2 is an enlarged sectional view showing a main part of FIG.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 (including partially viewed along the line AB).

FIG. 4 is a front sectional view partially showing a second embodiment of the pressure processing apparatus according to the present invention.

FIG. 5 is a sectional view taken along the line CC of FIG. 4;

FIG. 6 is a front sectional view partially showing a third embodiment of the pressure processing apparatus according to the present invention.

FIG. 7 is a sectional view of FIG. 6;

FIG. 8 is a configuration diagram showing a passage in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pressurization processing apparatus 11 Raw material flow space 12 Medium storage tank 21 Pressure-resistant container 21A Corrosion-resistant coating material 23 Passage 30 Upstream lid 32 Raw material supply hole 40 Downstream lid 42 Raw material discharge hole 50 Stirrer 60 Medium chamber

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4B026 DP03 DP04 DP10 DX03 4G036 AC37 4G037 CA03 EA03

Claims (9)

[Claims] 1. A sealable thick-walled cylindrical pressure-resistant container (21) having a stirrer (50) rotatably built therein and having a raw material supply port (32) and a raw material discharge port (42) formed therein. The pressure processing apparatus according to claim 1, wherein a passage (23) for a heating or cooling medium is formed in a wall (21a) of the pressure vessel (21). 2. The pressure processing apparatus according to claim 1, wherein the passage is formed so as to reciprocate in the axial direction of the pressure vessel by communicating with a lateral hole. . 3. A pressure processing apparatus according to claim 2, wherein said passage (23) comprises a drill hole. 4. The pressure processing apparatus according to claim 2, wherein said passage (23) comprises a groove (101, 120). 5. The pressure processing apparatus according to claim 1, wherein the passage (23) is spirally formed in a circumferential direction of the pressure vessel (21). 6. The pressure processing apparatus according to claim 1, wherein a medium chamber (60) is formed on an outer periphery of the pressure vessel (21). 7. The pressure processing apparatus according to claim 6, wherein outlets (25a, 25b) of the passage (23) communicate with the medium chamber (60). 8. The pressure-resistant container (21) is made of steel, and the inner wall (22) of the pressure-resistant container (21) is provided with a corrosion-resistant coating material (21A). The pressure processing device according to any one of the above. 9. The pressure processing apparatus according to claim 1, wherein the pressure vessel (21) is used for producing margarine.