JPH08131702A - Heat pipe type distillation equipment - Google Patents

Abstract

PURPOSE: To provide a heat pipe type distillation apparatus wherein temp. for distillation is freely controllable. CONSTITUTION: In a heat pipe type distillation apparatus 1 wherein the vaporization part 5a and the condenser 5b of a heat pipe 5 are inserted into a flow path 6 of a heat source fluid and a distillation tank 3, respectively and the heat energy of the heat source fluid is transferred into the distillation tank 3, a freely movable cover member 7 for increasing and decreasing the contact area of the vaporization part 5a with the heat source fluid is provided in the flow path of the heat source fluid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pipe type distillation apparatus, and more particularly to a structure for freely adjusting a distillation temperature by adjusting a heat transport amount of a heat pipe.

[0002]

2. Description of the Related Art Extensive research has been conducted on the energy lost in vain during the production process of factories, and research has been conducted on the recovery of waste heat. For example, a device utilizing a heat pipe, which is drawing attention as an element that effectively transfers a large amount of heat, for waste heat recovery has been developed.

As an apparatus used for the recovery of waste heat, there is, for example, a distillation apparatus for extracting a liquid containing various components contained in a distillation tank for each component, and heating the liquid in the distillation tank.
In the example of using a heat pipe to evaporate, one end of the heat pipe is inserted into the waste gas flow path of the factory,
The other end is inserted into the distillation tank. That is, this heat pipe moves and radiates the heat energy of the waste gas to the distillation tank to evaporate the liquid in the distillation tank. Generally, the temperature and the flow rate of the waste gas discharged from the production process are constant, so the heat pipe is appropriately designed according to the required performance (heat transport amount).

[0004]

Since the heat transfer amount is fixed in the above-mentioned conventional apparatus, it is not possible to distill each component by one heat pipe, and distill each component. Must have multiple heat pipes and distillation tanks designed exclusively for
There is a problem that the entire device becomes large and complicated. In addition, when starting / stopping / changing operation is performed in a factory or the like, it is very difficult to keep the temperature of the distillation tank at a predetermined temperature.

Therefore, an object of the present invention is to provide a heat pipe type distillation apparatus in which the distillation temperature can be freely controlled.

[0006]

In order to achieve the above object, in the invention described in claim 1, the evaporation part of the heat pipe in which the condensable working fluid is enclosed is arranged in the passage of the heat source fluid. At the same time, the condensing part of the heat pipe is disposed inside the distillation tank, transports the heat energy of the heat source fluid to the distillation tank, and extracts the desired component from the liquid containing various components. In the device, means for preventing contact between the heat source fluid and the outer surface of the evaporation unit are:
It is characterized in that it is provided so as to project and retreat into the passage of the heat source fluid to increase or decrease the contact area between the heat source fluid and the outer surface of the evaporation portion.

According to the second aspect of the invention, the evaporating portion of the heat pipe in which a condensable working fluid is enclosed is disposed in the passage of the heat source fluid, and the condensing portion of the heat pipe is A heat pipe type distillation apparatus, which is disposed inside a distillation tank, transports heat energy of the heat source fluid to the distillation tank, and extracts a desired component from a liquid containing various components. A means for preventing contact with a fluid is provided inside the evaporation section so as to increase or decrease the contact area between the inner surface of the evaporation section and the working fluid.

[0008]

According to the heat pipe type distillation apparatus of the present invention constructed as described above, the heat energy of the heat source fluid is normally transported to the distillation tank through the heat pipe. Further, in the invention described in claim 1, the means for preventing contact between the heat source fluid and the outer surface of the heat pipe evaporating portion is provided in the passage of the heat source fluid so as to project and retract, so that the heat source fluid and the evaporating portion are provided. The contact area with is increased or decreased.

According to the second aspect of the present invention, the means for preventing contact between the inner surface of the heat pipe evaporation section and the working fluid of the heat pipe is variably provided inside the evaporation section. The contact area between the working fluid and the working fluid is increased or decreased. Therefore, the amount of energy transferred through the heat pipe per unit time can be controlled, and the temperature of the distillation tank can be adjusted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the invention described in claim 1 will be described with reference to FIG. The distillation apparatus 1 is equipped with an extractor 2 and a distillation tank 3, and the extractor 2 has various traps 4 for extracting each component. Further, a fixed amount of liquid W is supplied to the distillation tank 3 by a pump P.

A heat pipe 5 is used as a heat exchanger for heating the liquid W in the distillation tank 3, and an evaporation section 5a of the heat pipe 5 is arranged in a waste gas passage 6 of a factory or the like. At the same time, the condenser 5 b is arranged in the distillation tank 3. The evaporating section 5a of the heat pipe 5 is not exposed to a high temperature atmosphere for heat transfer, but a high temperature waste gas is blown and the heat energy of the high temperature waste gas is directly transferred to the evaporating section 5a. It is like this. Also,
Fins 5c are provided in the evaporator 5a so that the heat energy of the waste gas can be satisfactorily transferred to the heat pipe 5.

Here, a cylindrical (pipe-shaped) cover member 7 is movably arranged so as to project from the outside of the waste gas flow path 6 to the inside, and when the cover member 7 moves to the left side in the drawing, Evaporating part 5a of heat pipe 5, that is, fin 5
It is configured to cover c. At this time, the inner surface of the cover member 7 and the fins 5c are not in contact with each other. Therefore, no thermal stress is generated between the heat pipe 5 and the cover member 7 due to the difference in thermal expansion coefficient between them.

Next, the operation of the distillation apparatus 1 constructed as above will be described. For example, component A (boiling point 50 ° C.),
When extracting the component A of the liquid W containing the component B (boiling point 100 ° C.) and the component C (boiling point 150 ° C.), the cover member 7 is moved to the left side in the drawing, and the waste gas and the evaporation part of the heat pipe 5 are extracted. Avoid contact with 5a. Therefore, the heat receiving area of the heat pipe evaporation unit 5a is reduced, and the amount of heat energy given to the heat pipe 5 and transported per unit time is reduced. Since the constant amount of the liquid W is continuously supplied to the distillation tank 3, the distillation temperature is lowered. When the component C is extracted by the various traps 4, the cover member 7
Is moved to the right side in the figure, and the waste gas and heat pipe evaporation unit 5
If the contact area with a is increased, the amount of heat energy given to and transported by the heat pipe 5 increases, and the distillation temperature rises.

That is, even in the distillation apparatus 1 using one heat pipe, the extraction temperature can be adjusted freely. Further, even when the factory or the like performs a variable operation and the properties of the waste gas, that is, the waste gas temperature and the waste gas flow rate are changed, the distillation temperature can be adjusted to a predetermined value. It is also possible to provide a temperature sensor in the distillation tank 3 and move the cover member 7 in response to a signal from this temperature sensor. In this embodiment, the heat transfer area of the evaporator 5a of the heat pipe 5 provided with the fins 5c is increased or decreased, but the heat transfer area is increased or decreased even if the fins 5c are not provided. Of course, even if the cover member 7 is formed in a plate shape so as to prevent contact between the evaporation portion 5a of the heat pipe 5 and the waste gas, the same control can be performed.

Next, an embodiment of the invention described in claim 2 will be described with reference to FIG. In this example, the means for increasing / decreasing the heat transfer area between the heat pipe 5 and the waste gas is different from that of the above embodiment. That is, the evaporation portion 5a of the heat pipe 5 has argon (Ar)
A cylinder 8 filled with a non-condensable gas such as Ar is connected, and Ar stored in the evaporation unit 5a is stored as necessary.
It is configured such that the amount (volume) of gas or the like varies. Here, as a means for storing Ar gas or the like in the evaporation section 5a,
A bellows is provided inside the evaporation unit 5a, or the evaporation unit 5a
It is conceivable that a partition wall or the like is slidably arranged on the inner surface. The other structure is the same as that of the embodiment shown in FIG.

When the amount of Ar gas or the like in the evaporation section 5a increases, the contact area between the evaporation section 5a and the working fluid of the heat pipe 5 decreases, and the amount of heat energy transported by the heat pipe 5 decreases. Conversely, when the amount of Ar gas or the like in the evaporation section 5a decreases, the contact area between the evaporation section 5a and the working fluid increases, and the amount of heat energy transported by the heat pipe 5 increases. As a result, the distillation temperature can be controlled as in the embodiment shown in FIG.

[0017]

As described above, according to the heat pipe type distillation apparatus of the present invention, the area of the portion for exchanging heat, that is, the contact area between the heat source fluid and the heat pipe evaporation section or the heat pipe evaporation section and the heat pipe is used. Since it is possible to increase or decrease the contact area with the working fluid, it is possible to adjust the heat transport amount and the temperature of the distillation tank associated therewith. In other words, since the applicable range of heat exchange capacity by one heat pipe is expanded, this type of heat pipe that uses waste heat is not designed and manufactured exclusively, and can be standardized, which is extremely useful. It can be provided at low cost.
Furthermore, since each component can be extracted by one device, it is possible to eliminate a plurality of distillation tanks and pipes connecting them, and to provide a heat pipe type distillation device of this type at low cost. be able to.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a distillation apparatus according to claim 1 of the present invention.

FIG. 2 is a schematic view showing an example of a heat pipe of a distillation apparatus according to claim 2 of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Distillation apparatus, 2 ... Extractor, 3 ... Distillation tank, 5 ... Heat pipe, 5a ... Evaporating part, 5b ... Condensing part, 6 ...
Waste gas flow path, 7 ... cover member, 8 ... cylinder.

Claims (2)

[Claims] 1. An evaporating portion of a heat pipe having a condensable working fluid sealed therein is disposed in a passage of a heat source fluid, and a condensing portion of the heat pipe is disposed inside a distillation tank. In a heat pipe type distillation apparatus that transports heat energy of a heat source fluid to the distillation tank and extracts a desired component from a liquid containing various components, the means for preventing contact between the heat source fluid and the outer surface of the evaporation unit is A heat pipe type distillation apparatus, which is provided so as to project and retreat into a passage of a heat source fluid to increase or decrease a contact area between the heat source fluid and an outer surface of an evaporation section. 2. An evaporating portion of a heat pipe having a condensable working fluid enclosed therein is disposed in a passage of a heat source fluid, and a condensing portion of the heat pipe is disposed inside a distillation tank. In a heat pipe type distillation apparatus for transporting heat energy of a heat source fluid to the distillation tank and extracting a desired component from a liquid containing various components, a means for preventing contact between the inner surface of the evaporation unit and the working fluid is A heat pipe type distillation apparatus, which is provided inside the evaporation unit so as to increase or decrease a contact area between the inner surface of the evaporation unit and the working fluid.