JP2984976B2 - Tank container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a container used as a reaction tank or a stirring tank in the chemical, pharmaceutical and food industries (hereinafter, referred to as a tank). The present invention relates to a tank container suitable for production of a product whose gradual heating and heating capacity govern product productivity.

[0002]

2. Description of the Related Art In general, this type of vessel has a container body formed of a pressure-resistant hermetically sealed container in which dish-shaped end plates are welded to both ends of a cylindrical body, and internal heat generation is removed from the vessel body. A temperature control mechanism for heating the contents is provided.

[0003] Conventionally, as a gradual heating mechanism of the vessel, a jacket 20 is provided outside the vessel main body 1 'as shown in FIG. 7, and as shown in FIG. An internal pipe system in which a spiral pipe 21 is fixedly arranged, or a pipe 22 extending in the longitudinal direction of the container main body inside the inner surface of the container main body 1 ′ and having an end connected to an elbow as shown in FIG. An internal pipe system fixed and arranged so as to meander in the circumferential direction of the container body, and a partition plate 2 perpendicular to the inner surface of the container body 1 'as shown in FIG.
3 are arranged side by side at an interval, an inner strip 24 is laid across the leading end of the partition plate 23, and a spiral shape partitioned by the partition plate 23 between the inner strip 24 and the inner surface of the container body 1 ′. An inner-jacket method in which a flow path 25 is formed (see Japanese Patent Application Laid-Open No. 57-147502) is known.

[0004]

In the jacket system in which heat is exchanged through the wall of the container body shown in FIG. 7, the thickness of the container body must maintain the pressure generated inside the container body and the jacket in view of structural strength. Therefore, it is generally disadvantageous because it becomes thick and the heat transfer coefficient through the wall of the container body decreases. Further, when the size of the container is increased, the wall of the container body must be made thicker from the viewpoint of strength. Therefore, this method has a disadvantage that it is difficult to cope with the enlargement of the container.

In the internal pipe system in which heat is exchanged through the walls of the pipes 21 and 22 inside the container main body 1 'in FIGS. 8 and 9, the pipe thickness is determined by the pipe diameter and is smaller than the inner diameter of the container main body 1'. Since the pipe diameter is small, the wall thickness of the pipe is thin and the heat transfer property is excellent.On the other hand, the contents adhere to the pipe itself and the support for fixing the pipe and hinder heat transfer. In addition, since the deposits are separated and mixed into the product, the operating efficiency becomes unstable and
There is a disadvantage that the product is deteriorated.

Further, in the inner jacket system in which heat is exchanged through the inner strip 24 inside the container main body 1 'shown in FIG. 10, the disadvantages of the systems shown in FIGS. The thickness of the inner strip 24 is determined, and since the interval between the partition plates 23 is smaller than the inner diameter of the container body 1 ', the thickness of the inner strip 24 becomes thinner, which has the advantage of excellent heat transfer. After the partition plates 23 are attached to the inner surface of the container body 1 'one by one on the inner surface of the container body 1' at an interval, and the inner strip 24 is laid between the leading ends of the partition plates 23, it is troublesome for on-site work. At the same time, such an in-tank assembly is required, and at the same time, a large number of welds between the inner strips 24 are exposed on the surface,
It is necessary to finish the surface of the weld smoothly, which makes the production troublesome and time-consuming.

Further, when the welded portion comes into contact with a corrosive liquid, it is necessary to check the corrosion and repair it if necessary, which has the disadvantage of requiring frequent maintenance work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the inner jacket system, and significantly reduces the assembling work in the container body, and manufactures the temperature control element and installs it in the container. Efficient assembly work, reliable discharge of contents from inside the container, easy maintenance work such as cleaning work, and problems such as thermal stress (heat distortion) caused by installing the temperature control element. It is an object to provide a tank container that does not occur.

[0009]

According to the present invention, FIG.
As shown in FIG. 6, partition plates 7 are arranged side by side at right angles to the outer surface of the flat inner cylinder 6, and an outer strip 8 is provided between the leading ends of the partition plates 7. A temperature control element 5 having a flow path 9 of a temperature control medium for heating or cooling separated by a partition plate 7 between the outer strip 8 and the outer strip 8 is formed. The temperature control element is formed smaller and the outer strip 8 side of the temperature control element is fixed to face the inner surface of the container body 1.

That is, there is a certain distance between the temperature control element 5 fixed inside the container main body 1 and the inner surface of the container main body 1, and this gap is shut off from the inside of the container to be sealed. Room. Then, the bottom of the temperature control element 5 is formed into a conical shape 5a or a dish shape 5 tapered toward the tank nozzle.
In addition, an expansion 13 which is formed in an arc shape such as b or a hemispherical shape 5c and which absorbs thermal stress is provided in a fixed portion between the temperature control element 5 and the container body 1 or a part of the container body.

[0011]

At the time of manufacture, it is only necessary to fix the temperature control element 5 in the container main body 1 at a distance from the inner surface of the container main body, and the inner surface is smooth by bending a flat plate to expose a welded portion or the like. It is composed of a small number of inner cylinders 6 and requires almost no inner surface finishing. In use, the processing liquid in the container body 1 exchanges heat with a heating or cooling temperature control medium flowing in the flow path 9 via the inner cylinder 6 of the temperature control element 5, and in this case, the processing liquid is thin. Since heat is exchanged through the thick inner cylinder 6, the heat transfer resistance of the inner cylinder 6 is reduced, and heat exchange with the temperature control medium is efficiently performed through the inner cylinder 6.

Further, since the temperature control element is not brought into close contact with the inner surface of the container main body, the precision of manufacturing the temperature control element is not strict, and the assembling and mounting work to the container main body can be easily performed. Further, the bottom of the temperature element 5 is tapered toward the vessel container nozzle 12, so that the contents can be reliably discharged from the vessel and maintenance such as cleaning work can be easily performed. In addition, since the expansion part which absorbs thermal stress is provided in the fixed part between the temperature control element and the container main body or a part of the container main body, the temperature control element applies heat distortion etc. to the tank container itself due to heat distortion by the temperature control medium. No problems occur.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a tank vessel provided with a spiral (or stepped) flow path on the inner surface, and FIG. 2 shows an enlarged cross-sectional view of a main part thereof. In the figure, reference numeral 1 denotes a container body, which is a pressure-resistant sealed container in which dish-shaped end plates 3 and 4 are welded to upper and lower ends of a cylindrical body 2.
Reference numeral 5 denotes a temperature control element, in which partition plates 7 are arranged side by side at right angles to the outside of the inner cylinder 6 by fillet welding, and
That is, the outer strip 8 is laid on the opposite side of the inner cylinder 6 by butt welding. A spiral temperature control medium flow path 9 for heating or cooling, which is partitioned by a partition plate 7, is formed between the inner cylinder 6 and the outer strip 8.

As shown in FIG. 1, the lower end of the temperature control element 5 has a conical shape 5 tapered toward the tank nozzle 12.
a. The shape of the lower end portion of the temperature control element 5 is not limited to the above, and may be a dish-shaped 5b arc shape matching the bottom shape of the container body 1 as shown in FIG. 4 or as shown in FIG. The arc shape of the hemispherical shape 5c or an arc shape such as a semi-elliptical shape, though not shown, may be used.
That is, the shape of the lower end of the temperature control element 5 is
A desirable shape can be appropriately selected and adopted from the shape of the container body or the shape of the stirring blade provided in the container.

The temperature control element 5 is provided on the container body 1.
Separately manufactured and fixed inside the container body 1 as follows, and the inlet 10
And an outlet 11 are provided at the bottom and top of the container body 1 so as to protrude outward. That is, the temperature control element 5
Is formed to have an outer diameter smaller than the inner diameter of the container body 1 and is charged into the cylindrical body 2 to which the lower head plate 3 is attached. At this time, a gap H is formed between the inner surface of the container body 1 and the outer surface of the temperature control element 5 by the difference in diameter between them.
The gaps H are arranged substantially concentrically so as to be substantially uniform in the circumferential direction.

As shown in FIG. 1, the temperature control element 5 and the container main body 1 are arranged such that the lower end of the temperature control element 5 is close to the tank container nozzle 12 and the lower end plate 3 (container main body 1).
And the upper end is fixed to the upper end plate 4 via an expansion 13a having an S-shaped cross section. The means for fixing the temperature control element 5 to the container body 1 is not limited to the above, and the lower end of the temperature control element 5 is fixed to the lower end plate 3 via the expansion 13b as shown in FIG. You may make it fix directly to the inner surface of the container main body 1. Although not shown, both the upper and lower ends of the temperature control element 5 may be fixed to the lower and upper end plates 3 and 4 or the inner surface of the container body 1 via the expansion 13. Is the temperature control element 5 and the container body 1
An expansion part for absorbing thermal stress may be provided in a part of the connection part (including the lower and upper end plates 3 and 4).
Further, as shown in FIG.
May be directly fixed without any intervening expansion, and the container body 1 may be provided with an expansion portion 13c. Therefore, when the temperature control element 5 is mounted in the container body 1 as described above, the gap H between the inner surface of the container body 1 and the temperature control element 5 becomes a closed chamber 14 that is shut off from the inside of the container.

Reference numeral 15 denotes a pressure balance mechanism. A balance piston 17 is provided in a communication pipe 16 having one end communicating with the inside of the container main body 1 and the other end communicating with the closed chamber 14. When a pressure difference is generated between the inside of the balance 13 and the inside of the balance 13, the pressure is automatically balanced by the movement of the balance piston 17. At this time, since the inside of the container body 1 and the inside of the closed chamber 14 are kept in a state of being cut off by the balance piston 17, the gas and the like in the container body 1 do not enter the closed chamber 14, and the Even when the above materials are alternately processed, the intrusion of foreign matter can be prevented.

The pressure balance mechanism 15 is not always necessary when the vessel is used at normal pressure. Also,
An air pressure or a pressure equalized liquid in consideration of compatibility with the process liquid may be filled or circulated in the closed chamber 14. Further, the pressure balance mechanism is not limited to the embodiment, but measures the internal pressure of the container body 1 and separately operates the pressure balance mechanism so that the pressure in the closed chamber 14 becomes equal to the internal pressure of the container body 1. The pressure may be controlled by a pressure reducing device.

[0019]

According to the present invention, the inner surface of the temperature control element 5 is constituted by a smooth cylinder 6 which is formed by bending a flat plate into a cylindrical shape, so that almost no inner surface finishing is required and the temperature control element 5 can be used. In some cases, the treatment liquid is less likely to adhere, and good treatment can be performed. In addition, since the temperature control element 5 is provided at a fixed distance from the container body, high production accuracy is not required, and the work of mounting the temperature control element 5 on the container body can be easily performed. Further, the bottom of the temperature control element is tapered toward the tank nozzle, so that the contents in the container can be reliably discharged and the cleaning operation can be easily performed. In addition, since an expansion portion for absorbing thermal stress is provided in a mounting portion between the temperature control element and the container main body or a part of the container main body, the thermal stress from the temperature control element adversely affects the container main body. For example, the efficiency of container production can be improved as compared with the conventional apparatus, maintenance can be facilitated, and operation efficiency and product quality can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of a temperature control element unit in FIG. 1;

FIG. 3 is a longitudinal sectional view showing another embodiment of the temperature control element bottom part of the present invention.

FIG. 4 is a longitudinal sectional view showing another embodiment of the temperature control element bottom part of the present invention.

FIG. 5 is a schematic view showing another embodiment of the mounting structure of the temperature control element and the container body of the present invention.

FIG. 6 is a schematic view showing an example in which an expansion section of the present invention is provided in a tank container main body.

FIG. 7 is a longitudinal sectional view showing a conventional example.

FIG. 8 is a longitudinal sectional view showing a conventional example.

FIG. 9 is a longitudinal sectional view showing a conventional example.

FIG. 10 is a longitudinal sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Cylindrical trunk part 3 Lower end plate 4 Upper end plate 5 Temperature control element 5a, 5b, 5c Temperature control element bottom 6 Inner cylinder 7 Partition plate 8 Outer strip 9 Spiral flow path 10 (of flow path) 11 ( Outlet of flow path) 12 Vessel container nozzle 13 Expansion section 14 Sealed chamber 15 Pressure balance mechanism 16 Communication pipe 17 Balance piston 18 Closure plate 19 Notch H gap

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuo Matsuki 1501 Imaiza, Toyo-shi, Ehime Sumitomo Heavy Industries, Ltd. Toyo Factory (56) References JP-A-7-185314 (JP, A) (58) ) Surveyed field (Int. Cl. ⁶ , DB name) B01J 19/00 B01J 14/00 F28D 1/06

Claims (5)

(57) [Claims] 1. A partition plate is arranged side by side at a right angle to an outer surface of an inner cylinder at an interval, and an outer strip is straddled between leading ends of the partition plate.
Forming a temperature control element having a flow path of a temperature control medium for heating or cooling separated by a partition plate between the inner cylinder and the outer strip, and forming the temperature control element inside the container body with the outer strip side as a container. The bottom of the temperature control element is fixed in a closed vessel in which the space between the temperature control element and the inner surface of the container body is closed from the inside of the container while being fixed at an interval facing the inner surface of the main body. A vessel container characterized in that it is tapered toward the vessel nozzle. 2. The tank vessel according to claim 1, wherein the tapered shape of the temperature control element is conical. 3. The tank container according to claim 1, wherein the tapered shape of the temperature control element is an arc shape. 4. The method of fixing the temperature control element to the container body,
The tank container according to claim 1, wherein the heat treatment is performed via an expansion capable of absorbing thermal stress. 5. The container according to claim 1, wherein the temperature control element is fixed to the container main body, and an expansion portion capable of absorbing thermal stress is provided on a part of the container main body on the side of the temperature control element. Tank container.