JPS63189763A - Heating-cooling vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a heating/cooling container, and in particular, to a heating/cooling container that has an extremely quick heating/cooling response by utilizing latent heat during both heating and cooling. Regarding.

In various operations such as chemical reaction operations and dissolution/dilution operations, after the material to be processed held inside the container is heated to a predetermined temperature, heat of chemical reaction, heat of dissolution, and heat of dilution are released. , while removing the amount of heat generated from the processed material inside the container, such as heat of crystallization, the temperature of the processed material is maintained at a predetermined temperature, or after processing at a predetermined temperature, the processed material inside the container is removed. Operations such as lowering the temperature and moving on to the next process are frequently performed.

As a method for performing the above operation, a heat medium such as hot water, steam, or organic heat medium generated outside the container is supplied to a heat exchange device such as a jacket provided around the container body or a coil type installed inside the container. By adjusting the flow rate, pressure, temperature, etc. of this heat medium, the object to be processed in the container can be heated,
It is generally practiced to maintain a predetermined temperature or cool it.

However, with this method, the switching between heating and cooling is slow and the response is poor, so it is also possible to prepare two types of heat medium, one for heating and one for cooling, and switch between them for heating and cooling. However, it takes a considerable amount of time to replace the heat medium for heating and the heat medium for cooling, and the responsiveness is not always good, so it is not applicable especially when heating and cooling need to be repeated frequently.

In order to respond quickly to changeovers and to be able to respond to frequent switching between heating and cooling, we installed two systems of heat exchange equipment: one for heating and one for cooling.
During heating, a heating medium is supplied to the heating heat exchange device,
During cooling, it is also common practice to supply a cooling heat medium to a cooling heat exchange device. For example, a jacket may be used for heating, a coil heat exchanger installed inside the container may be used for cooling, or a halved pipe may be wrapped in a coil around the outer wall of the container body inside the jacket chamber. There are examples of using a jacket and half-split coils for cooling, but the former method has problems with the structure of the container, such as supercooling on the surface of the coil heat exchanger and the relationship with the stirring blades. For some reason, it cannot be applied if a heat exchange device cannot be installed inside the container, and the latter method reduces the heat transfer area, so the heat transfer area may be insufficient and the necessary responsiveness may not be obtained. There are drawbacks such as.

A further fundamental drawback is that with any of the above methods, latent heat cannot be used except when heating with steam, and only sensible heat can be used. However, during cooling, the sensible heat of the cooling heat medium is used for cooling, and the cooling rate becomes rate-limiting, which may prevent the overall response of the container from improving. In order to solve this drawback, even if we try to increase the heat transfer area during cooling so that the cooling rate is on the same level as the heating rate, a heat transfer area that is several times larger than the heating area is required.
Due to the above-mentioned structural reasons, the required heat transfer area is often not actually obtained.

As described above, conventional heating-cooling containers are often not suitable for use as containers for chemical reactions or dissolution that generate a large amount of heat, or as cooling containers that require rapid cooling due to poor responsiveness.

In addition, in terms of equipment, a boiler such as a hot water boiler, steam boiler, or heat medium boiler is required to supply the heat medium, and especially when using an organic heat medium, a heat medium boiler dedicated to the container is required. It is often necessary. Furthermore, piping, pulp, heat insulation, tanks, etc. that connect the container and boiler are required, and additional equipment such as boilers, piping, and tanks are generally much larger than the container itself.
It requires a large amount of capital investment and a large installation space, requires maintenance and inspection, is subject to legal regulations, and has many complicated and inconvenient points. Needless to say, the process becomes even more complicated when two types of heat medium are prepared, one for heating and one for cooling.

Among the above drawbacks, in order to solve the equipment problems and create a compact container that efficiently heats using latent heat, a liquid reservoir is provided in the jacket chamber provided around the container body. An electromagnetic induction heating mechanism installed in the chamber heats and evaporates the gas-liquid two-phase heating medium sealed in the liquid reservoir, and the object to be processed in the container is heated by giving and receiving latent heat of the evaporated heating medium. Containers have been proposed.

However, even in this case, the above drawbacks during cooling cannot be solved; even if a coil heat exchanger is installed for cooling, the cooling speed is slow because latent heat cannot be used during cooling, and it is difficult to improve the response. If so, a heat transfer area several times larger than that for heating would be required, and due to the above-mentioned supercooling and structural reasons, the necessary heat transfer area could not be obtained, and the heat transfer area during cooling would be insufficient. The disadvantage is that the response is slow and it cannot be applied to chemical reactions that generate a large amount of heat or when rapid cooling is required.

The present invention evaporates a heat medium using an electromagnetic induction heating mechanism installed in a part of a container, and reduces the amount of latent heat generated when the evaporated heat medium condenses on the outer wall surface of the container body. In a container that heats the object to be processed in the container by transfer and reception, even when cooling the object, the object can be cooled by transfer of latent heat when the heat medium evaporates, and heating and cooling can be performed with an extremely quick response. The purpose is to do so.

- The present invention provides a container having a jacket chamber around the container body with a liquid reservoir portion containing a gas-liquid two-phase heating medium heated by an electromagnetic induction heating mechanism. A heat exchange device and a liquid collection and rectification device (the heat exchange device may have a liquid collection and rectification function) are provided, and the evaporated heat medium in the jacket chamber is condensed by the heat exchange device,
The condensed heat medium is made to flow down as uniformly as possible in the form of a film or droplets on the outer wall surface of the container by the liquid collection and rectification device (or the liquid collection and rectification function of the heat exchange device), and the condensed heat medium flows down into the container. The present invention relates to a heating/cooling container characterized in that the object to be processed in the container is cooled by transfer of latent heat when the object to be processed evaporates due to the amount of heat held by the object.

Embodiment An embodiment of the present invention will be described with reference to the drawings. A cooling heat exchange device 8 is provided in a vapor phase section 7 inside a sealed jacket chamber 2 in which a gas-liquid two-phase heat medium is sealed under reduced pressure. In this embodiment, this heat exchange device 8 consists of a finned pipe 9,
This is installed by winding it in a coil around the outer periphery of the outer wall portion 5 of the heating-cooling container main body l. At this time, the finned pipe 9 and the container outer wall surface 5 are installed with a gap of an appropriate distance so that they do not come into contact with each other. A cooling heat medium for condensing the heat medium vapor is supplied to the finned pipe 9, and 12 is an inlet/outlet for supplying the latent heat medium.

By supplying the cooling heat medium to the heat exchange device 8,
On the surface of the heat exchange device 8, the vapor of the heating heat medium inside the jacket chamber 2 condenses and falls as droplets, and the condensed liquid is collected and the collected condensed liquid of the heating heat medium is A liquid collecting and rectifying device 10 is installed to uniformly flow down the liquid onto the outer wall surface 5 of the container.

This liquid collecting and rectifying device 10 is composed of a plate-like object such as a flat plate or a corrugated plate. In the case of a heat exchange device consisting of a pipe wound in a coil around the outer wall of the container as in this embodiment, the pipe It is appropriate to install the condensate spirally around the lower part of the pipe along the circumferential direction of the container. Protrusions for damming as shown in the figure may be provided, or a third
It is preferable to use a folded plate shape as shown in the figure or a corrugated plate shape as shown in FIG.

In the case of this embodiment, a liquid collecting rectifying plate 11 as shown in FIG. 2 is used, and is installed directly below the finned pipe 9 so as to be spirally wound along the finned pipe 9. Further, the liquid collection rectifying plate 11 is installed at an appropriate inclination angle with respect to the outer wall surface 5 of the container in order to cause the condensed droplets that have fallen from the finned pipe 9 to flow down onto the outer wall surface 5 of the container. Further, a gap of about 0.5 fin is provided between the container outer wall surface 5 and the liquid collecting rectifier plate 11.
The collected and rectified condensed liquid is made to flow down uniformly from this gap onto the wall surface of the outer wall surface 5 of the container in the form of a film or drops.

In the above configuration, when the electromagnetic induction heating mechanism 15 is driven, a current is induced, Joule heat is generated, and the liquid phase heat medium in the liquid reservoir 6 in the jacket chamber 2 is heated and evaporated.

The evaporated heat medium vapor comes into contact with the outer wall surface 5 of the container body and condenses, releasing latent heat of condensation to heat the object 4 inside the container. The condensed heat medium returns to the liquid reservoir 6 and evaporates again. This is repeated to heat the object 4 inside the container to a predetermined temperature.

Next, the amount of heat generated from the processed material 4 inside the container, such as heat of reaction and heat of dissolution, is removed to maintain it at a predetermined temperature or to perform the next process operation. In order to lower the temperature, a cooling heat medium may be supplied to the finned vibrator 9 in the jacket chamber 2. When the cooling heat medium is supplied, the heat medium vapor in the jacket chamber 2 immediately condenses on the surface of the finned vibrator 9 and falls to the liquid collecting rectifier plate 1.
The liquid is collected by the container outer wall 5 and flows down almost uniformly along the container outer wall 5 in the form of a film or drops from the gap between the container outer wall 5 and the liquid collecting rectifying plate 11. While flowing down, the condensed liquid is evaporated by the heat received from the high-temperature processing object 4 inside the container,
At this time, the latent heat of vaporization is taken away from the object to be processed, so the temperature of the object to be processed 4 drops extremely quickly.

If you want to heat it up again, just stop supplying the cooling heat medium to the finned vibrator 9 (the workpiece 4 in the container is quickly heated by the heat medium vapor in the jacket chamber 2).

Note that, in practice, the start and stop of the supply of the cooling heat medium is automatically controlled by detecting the temperature of the object to be processed 4 in the container. Furthermore, if it is necessary to widen the cooling temperature range of the workpiece 4, the voltage and frequency applied to the electromagnetic induction heating mechanism are controlled according to the decrease in the temperature of the workpiece 4. The amount of heat supplied to the heat medium is reduced.

As detailed above, according to the present invention, in a container equipped with an electromagnetic induction heating mechanism and a jacket chamber in which a gas-liquid two-phase heat medium is enclosed, a cooling device is provided in the jacket chamber. A heat exchange device and a liquid collection rectification device (the heat exchange device may have a liquid collection and rectification function) are provided, and the condensed liquid of the heat medium in the jacket chamber condensed by the heat exchange device is The object to be processed is caused to flow down as uniformly as possible in the form of a film or drops on the outer wall surface of the container, and the object to be processed is absorbed by the latent heat taken away when the flowing condensate evaporates due to the amount of heat held by the object to be processed inside the container. Can be cooled.

Since latent heat is used for both heating and cooling, extremely rapid heating and cooling are possible, and if a cooling heat medium is supplied to the heat exchanger during heating, the object to be processed in the container can be immediately cooled. As soon as the heating starts and the supply of the cooling heat medium is stopped, it returns to the heating state, so switching between heating and cooling is quick, resulting in a heating-cooling container with extremely good responsiveness. Therefore, it can be used as a reactor for reactions that generate intense heat, or as a container for rapid cooling from a heated state.Furthermore, since the heating source is an electromagnetic induction heating mechanism installed in a part of the container, it can be used as a steam boiler or heat medium boiler. This has the effect of making the heating/cooling container much more compact than a case where heat medium vapor is supplied from outside the container.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention, FIG.
FIG. 4 and FIG. 4 are drawings showing an example of the shape of the liquid collecting and rectifying device. 1 is a heating-cooling container main body, 2 is a jacket chamber, 4 is a workpiece, 6 is a heat medium liquid reservoir in the jacket interior, 7 is a heat medium vapor phase part in the jacket interior, 8 is a heat exchange device, 10 is a liquid collection rectifier In the apparatus, 13 is an induction coil, 14 is an iron core, 15 is an electromagnetic induction heating mechanism, and 16 is a pulp to be treated.

Claims (1)

[Scope of Claims] An electromagnetic induction heating mechanism equipped with an induction coil installed in a part of the container, and a liquid reservoir sealed with a gas-liquid two-phase heating medium heated by the electromagnetic induction heating mechanism. , a jacket chamber provided around the container body, a heat exchange device provided in the jacket chamber for condensing the evaporated heat medium, and collecting and rectifying the heat medium condensed by the exchange device. A liquid collecting and rectifying device for causing the liquid to flow down onto the outer wall surface of the container body, or a heat exchange device having a liquid collecting and rectifying function as well as a condensing function, when heating the object held inside the container body. In the case of heating and receiving the latent heat of the heating medium that has been heated and evaporated by the electromagnetic induction heating mechanism, and when cooling the object, the heat that has been heated and evaporated by the electromagnetic induction heating mechanism is heated. The medium is condensed by the heat exchange device, and the condensed heat medium flows down on the outer wall surface of the container body in the form of a film or drops by the liquid collection and rectification device or the liquid collection and rectification function of the heat exchange device. A heating-cooling container characterized in that the condensed heat medium is cooled by giving and receiving latent heat when it evaporates due to the amount of heat held by the object to be treated in the container.