JPH0271833A - Heat treatment apparatus - Google Patents

Abstract

PURPOSE: To decrease the number of control apparatus by connecting a fluid control valve to a heat medium housing space or between this heat medium housing space and a pressurization side of a circulating pump and connecting the other junction of this fluid control valve preferably to a discharge pipe. CONSTITUTION: The apparatus is provided with the heat supply space or a vessel or autoclave 19 having the internal space joined with the heat supply space via a heat permeable material, the space for the heat medium, preferably a mantle space 23 and a conduit circuit for the heat medium having a circulating pump 15. The fluid control valve 11 is connected to the heat medium housing space or between the heat medium housing space and the pressurization side of the circulating pump 15. The other juncture of the fluid control valve 11 is preferably connected to the discharge pipe 26. A water introducing valve 27, a brine introducing pipe 28 or other heat medium introducing pipe is directly or indirectly connected via a heat medium introducing valve, preferably a water introducing valve 1 and brine introducing valve 3 to the suction side of the circulating pump 15. Consequently, the number of the control apparatus may be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a heat treatment apparatus, particularly a heat treatment apparatus suitable for use in the chemical industry, pharmaceutical industry, food industry, cosmetics industry, etc.

2. Prior Art The most widespread devices of this type in the industrial sectors mentioned above include vessels with mantles or other heat-permeable walls;
That is, it is a so-called autoclave suitable for carrying out various chemical processes and reactions in a fractional manner.

Although autoclaves are widely available, the types currently used to transfer the energy carrier to the mantle or other energy-conducting parts of the equipment cannot be used efficiently and must be adequately cooled and heated. It is not possible to reliably protect the structural materials or protect the equipment from thermal shock. For this reason, the quality of the product obtained is often inadequate, and the amount of product is also not uniform. Furthermore, the use of this type of equipment is characterized by a large amount of raw materials, energy and labor, especially in the pharmaceutical industry, where many products are produced in the same autoclave or cooling and Because the heating is often not uniform, many reactions frequently occur one after the other before the final product is produced. Therefore, great savings have to be made when using autoclaves to process expensive raw materials with special structures, and at the same time they also require complex conduit systems and shut-off control systems.

Conduits containing different heating media are placed at the contact surface adjacent to one of the autoclave mantles or other heat-permeable walls.
Devices are known which are connected via a two-stage closure device.

In this known device, the rate of inflow of the heating medium into the thermally conductive space or into the mantle space of the autoclave is determined by the transport pressure of the heating medium when using an autoclave with a certain construction and with the evacuation means. Determined by adjustment of the conduit control valve.

Moreover, in this known device, on the one hand, it is not possible to establish a flow rate of the heating medium suitable for achieving the desired heat transfer factor, and on the other hand, the transport rate of the heating medium has to be adjusted separately. Therefore, extremely complex control is required. Furthermore, particularly complex mechanical and electrical closure means are required to avoid incorrect operation.

The heat medium is transferred to the mantle space of the autoclave using a circulation pump, the suction side of the pump is connected to the autoclave via a heat medium conduit control valve, and the control valve is controlled. Devices are also known in which the amount of heat transfer medium that is sucked in and transported anew into the mantle space is determined.

This device requires a separate device for discharging the used heat transfer medium which is displaced by the newly delivered heat transfer medium. Such an operation can generally be ensured by a pressure regulator connected to the return conduit of the heating medium.

Although a relatively good heat transfer factor can be obtained by using this device, it has the following disadvantages: the heating medium control valve must be installed separately, and the heating medium must be recirculated. This requires a very complex separate pressure regulator.

This known device also has the following disadvantage: The recirculated heat transfer medium does not flow under the pressure of the external conduit carrying it, as long as the control valve guiding the heat transfer medium is open. When the control valve is closed and the system becomes non-tight,
If desired, a fluid can be introduced in order to discharge the heating medium.

Circulating systems of this type have the above-mentioned drawbacks and are therefore not suitable for systems that operate with multiple heat carriers for multiple purposes.

Problems to be Solved by the Invention This invention expands the field of application related to heat supply and heat removal by circulating a heat medium, and also improves heat treatment processes in the chemical, pharmaceutical, food, and cosmetic industries by simplifying control technology. This was done to simplify the process by improving efficiency and efficiency.

The object of the invention is to reduce the number of control instruments of a heat treatment apparatus which requires a fluid heat medium for operation and to replenish the fluid lost during circulation.

Means for solving the problem, that is, the present invention provides a heat supply space or a container or autoclave in which the heat supply spaces are joined via a heat-permeable material and has a t1 internal space, a heat medium space, preferably a mantle space, and a circulation pump. A fluid control valve is connected between the heating medium storage space or the heating medium storage space and the pressurizing side of the circulation pump, and the fluid control valve is Another connection is preferably connected to the discharge pipe and on the suction side of the circulation pump via a heat medium inlet valve, preferably a water inlet valve and a salt water inlet valve.
The present invention relates to a heat treatment apparatus characterized in that a water introduction pipe, a salt water introduction pipe, or another heat medium introduction pipe is connected directly or indirectly.

In a preferred embodiment of the device according to the invention, the fluid regulating valve is connected to the lower part of the mantle space, and the upper level regulator is connected via the upper valve to the mantle space I on the side to which the fluid regulating valve is connected. A steam-water mixer and a lower level regulator are connected between the suction side of the circulation pump and the mantle space, and a steam conduit is connected to the steam-water mixer via a steam control valve. A circulation valve is disposed between the pressurized side of the mantle and the mantle space.

In another preferred embodiment of the device according to the invention,
A condensate discharge valve and a first discharge valve are connected between the circulation valve and the mantle space, and the other side of the discharge valve is connected between the steam-water mixer and the lower level regulator. In this case, a second discharge valve is connected between the pressurizing side of the circulation pump and the discharge conduit, a water discharge valve and a salt water discharge valve are connected to the discharge conduit, and a water discharge valve and a water inlet pipe are connected. A pressure maintenance container and a check valve are disposed between the two, and a pressure regulator is preferably connected to the pressure maintenance container.

In a further preferred embodiment of the device according to the invention, a water inlet valve, a steam regulating valve, a brine inlet valve, a water outlet valve,
The salt water discharge valve, condensate discharge valve, upper valve, first discharge valve, circulation valve, second discharge valve, fluid control valve and circulation pump control inlet are connected to the outlet side of the control device, and the lower level control is connected to the outlet side of the control device. The upper level regulator and pressure regulating outlet are connected to the inlet side of the control device.

The device according to the invention and its function will be explained in more detail on the basis of FIG.

FIG. 1 is a circuit diagram showing one embodiment of a device according to the invention.

The device according to the invention shown in FIG.
The autoclave is equipped with an autoclave (19) known per se, having an internal mantle (21) and an internal space of the autoclave in which a mixer (20) is disposed.

There is a mantle space (23) between the outer mantle (22) and the inner mantle (21) of the autoclave (19).
or formed. The pressurizing side of a circulation pump (15) is connected to the lower part of the mantle space (23) via a circulation valve (9), and a steam-water mixer (14) is connected to the upper part of one side of the mantle space. , the suction side of the circulation pump (15) is connected via the inlet pipe (30) and the lower level regulator (12). A water introduction pipe (27) is connected to the introduction pipe (3o) via a water introduction valve (1), a pressure maintenance container (16), and a check valve (18), and a salt water introduction valve (3) A salt water inlet pipe (28) is connected via the salt water inlet pipe (28). A pressure regulator (17) is connected to the pressure maintenance container (16).

One side of a first discharge valve (8) is connected between the circulation valve (9) and the mantle space (23), and the other side of the first discharge valve (8) is connected to the introduction pipe (30). Circulation pump (15
) is connected to the discharge pipe (26) via the second discharge valve (10).
), and a water discharge valve (4) and a salt water discharge valve (5) are connected to the discharge pipe. Circulation valve (9) and mantle space (
23) is connected with a condensed water discharge valve (6).

An upper level regulator (13) is connected to the other side of the mantle space (23) via an upper valve (7), and a fluid control valve is connected between the mantle space (23) and the discharge pipe (26). (1
1) is provided. A steam pipe (ll) is connected to the steam-water mixer (14) via a steam control valve (2).

Water introduction valve (1), steam control valve (2), salt water introduction valve (3)
, water discharge valve (4), salt water discharge valve (5), condensed water discharge valve (
6), upper valve (7), first discharge valve (8), circulation valve (9)
, the second discharge valve (lO), the fluid regulating valve (11) and the control inlets of the circulation pump (15) are connected to the outlet side of the control device (25), while the lower level regulator (12), the upper level The outlets of the regulator (13) and the pressure regulator (17) are connected to the inlet side of the control device (25).

The operation of the device according to the invention shown in FIG. 1 is carried out as follows.

When operating with cooling fluid, the first discharge valve (8)
, by closing the condensed water discharge valve (6), the second discharge valve (40), and the fluid control valve (11), and opening the water introduction valve (1) or the salt water introduction valve (3). Introduce water or salt water to the tank. This fluid introduction takes place until the upper level regulator (13) indicates the filling status of the control device (25). Then, the upper valve (7) is connected to the control device (
After closing by 25), the circulation pump (15) is activated.

During circulation, the control device (25) opens the fluid control valve (11) in response to the adjusted temperature value.
In this case, the fluid control valve is adjusted so that the temperature inside (24) of the autoclave (19) is maintained at a predetermined value by the amount of heat removed from the salt water or water circulation path.

The fluid used as heat transfer medium may be any technically suitable fluid, such as petroleum or the like.

During circulation, the corresponding means, for example the water inlet valve (1) or the salt water inlet valve (3) for introducing water or salt water, are fully opened, and the outflowing heat medium is passed through the corresponding conduit, for example the water inlet pipe (
27) or immediately refill from the salt water inlet pipe (28).

From the circulating fluid, used fluid is removed from the fluid control valve (11) or the discharge pipe (26) depending on the state of the fluid control valve (11) and the pressure ratio of the fluid heat medium to be replenished.
) or via the water discharge valve (4) or the salt water discharge valve (5).

After draining the salt water by means of the salt water discharge valve (5), the salt water cooling process can be switched. This changeover is easily carried out by completely emptying the system via the first drain valve (8) and the second drain valve (11) by the action of the circulation pump (15).

After the empty state of the system has been indicated by the lower level regulator (12) of the control device (25), the command to start the primary process, for example the water cooling process, is given.

When switching the water cooling process to the hot water heating process, under the control of the control device (25), an amount of steam corresponding to the open state of the steam control valve (2) is transferred to the steam-water mixer (14).
), and the condensed water mixes with the circulating water.

The amount of water obtained by condensing the steam in the steam-water mixer (14) increases the amount of circulating water. To avoid this, excess water is trapped in a pressure vessel, in which excessive pressure build-up is prevented by a pressure regulator (17). The pressure regulating valve gives a command to open the upper valve (7) when the control device (25) reaches the regulated pressure value, so that the excess water flows through the upper level regulator (13).
through the drain pipe. A check valve (18) prevents condensed water from flowing into the water introduction pipe (27). This system is also under pressure in the water inlet pipe (27) during the hot water heating process.

In the case of a steam heating process, the steam from the steam conduit (29) flows through the regulating valve (2) into the mantle space (23) of the autoclave and condenses, so that the circulation pump is not activated. The condensed water is reliably discharged by the function of the condensed water discharge valve (6) connected to the mantle space (23).

As is clear from the embodiments described above, when using any fluid as a heat medium, the amount of fluid introduced into the circulation system and the amount of fluid discharged from the system can be determined only by the operation of the fluid control valve (11). In addition, the pressure in the conduit can be constantly adjusted by the regulating valve. Further, when using any fluid heat medium, the corresponding fluctuations in the amount of heat released and absorbed can be adjusted by the fluid control valve (11).

In the case of introducing a heating medium, only a two-stage valve, for example a water inlet valve (1) or a salt water inlet valve (3), is required. This is because these adjustments are made using the fluid control valve (1
This is because it can be performed reliably by adjusting the operation of 1).

Effects of the Invention The advantage of the device according to the invention is that, compared to known devices of this kind, it not only has a smaller number of control elements, which makes the regulation substantially easier, but also that any fluid heat carrier can be used. It is practical because it can be used.

Another advantage of the device according to the invention is that the transition when switching from cooling to heating takes place virtually completely continuously, so that no temperature transients are detected.
e) can be reduced or avoided, and the material treated in the autoclave is not subjected to thermal shock.

A further advantage of the invention is that, since the temperature changes are continuous, the autoclave is adequately protected from excessively rapid and potentially damaging temperature effects.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of a device according to the invention. (1) is water inlet valve, (2) is steam control valve, (3) is salt water inlet valve, (4) is water discharge valve, (5) is salt water discharge valve, (6
) is the condensed water discharge valve, (7) is the upper valve, (8) is the first discharge valve, (9) is the circulation valve, (l O) is the second discharge valve, (11
) is the fluid control valve, (12) is the lower level regulator, (13)
is the upper level controller, (14) is the steam-water mixer, (15
) is the circulation pump, (16) is the pressure maintenance vessel, (17) is the pressure regulator, (18) is the check valve, (19) is the autoclave, (20) is the mixer, (21) is the internal mantle (22) ) is the external mantle, (23) is the mantle space, (
24) is inside the autoclave, (25) is the control device, (
26) is a discharge pipe, (27) is a water introduction pipe, (28) is a salt water introduction pipe, (29) is a steam introduction pipe, and (30) is an introduction pipe. Patent applicant

Claims (1)

[Claims] 1. A container or autoclave having a heat supply space or an internal space to which the heat supply space is connected via a heat-permeable material, a heat medium space, preferably a mantle space, and a heat source equipped with a circulation pump. In a heat treatment apparatus equipped with a medium conduit circuit, a fluid control valve (
11) is connected, and the other connection of the fluid regulating valve is preferably a discharge pipe (26).
A water inlet pipe (27), a salt water inlet pipe (28) or A heat treatment device characterized in that another heat medium introduction pipe is connected directly or indirectly. 2. The fluid control valve (11) is connected to the upper part of the mantle space (23), and the fluid control valve (11) is connected to the mantle space (23).
) is connected to the upper level regulator (13) via the upper valve (7), and a steam-water mixer (14) is connected between the suction side of the circulation pump (15) and the mantle space (23).
A lower level regulator (12) is connected to the steam-water mixer (14) and a steam control valve (2) is connected to the steam conduit (29).
) is connected thereto, and a circulation valve (9) is disposed between the pressurizing side of the circulation pump (15) and the mantle space (23). 3. A condensate discharge valve (6) and a first discharge valve (8) are connected between the circulation valve (9) and the mantle space (23), and the other side of the first discharge valve is connected to a steam-water mixer ( 14) and the lower level regulator (12), and a second discharge valve (10) is connected between the pressurizing side of the circulation pump (15) and the discharge pipe (26), and a second discharge valve (10) is connected to the discharge pipe (26) to supply water to the discharge pipe (26). The discharge valve (4) and the salt water discharge valve (5) are connected, and the water inlet valve (1) and the water inlet pipe (27)
A pressure maintenance container (16) and a check valve (18) are disposed between the pressure maintenance container (16) and a pressure regulator (1).
7) is connected to the heat treatment apparatus according to claim 1 or 2. 4. Water introduction valve (1), steam control valve (2), salt water introduction valve (
3), water discharge valve (4), salt water discharge valve (5), condensed water discharge valve (6), upper valve (7), first discharge valve (8), circulation valve (
9), the second discharge valve (10), the fluid control valve (11) and the control inlet of the circulation pump (15) are connected to the outlet side of the control device (25), the lower level regulator (12), the upper level The heat treatment apparatus according to any one of claims 1 to 3, wherein the outlets of the regulator (13) and the pressure regulator (17) are connected to a control device (25).