KR101975720B1 - Thin film descent evaporation concentrator - Google Patents

Abstract

The present invention relates to a thin film descending type evaporation concentrator. More specifically, the present invention provides a thin film descending type evaporation concentrator capable of enhancing energy efficiency while allowing a solution to disperse and flow evenly from the top. The thin film descending type evaporation concentrator comprises: an evaporator; a heating unit; a fluid circulation unit; and an energy regeneration unit.

Description

Thin film descent evaporation concentrator

The present invention relates to a thin film falling evaporation concentrator, and more particularly, to a thin film falling evaporation concentrator capable of improving energy efficiency while allowing the solution to flow down evenly.

Thickeners are commonly used to make low concentrations of liquids high. Usually, a thickener introduces and uses a thin film falling type, forced circulation type, natural circulation type, batch type, etc. according to the characteristics of the liquid for concentration. Among them, the thin film falling type concentrator is the most applied type to form a thin film type liquid film in the tube, and the liquid film is brought into contact with the evaporated vapor to be concentrated in a short time, and has excellent heat transfer efficiency and concentration efficiency.

However, the thin film falling concentrator has a liquid film formed in the upper part of the heat pipe if the liquid film formed at the top of the heat pipe is very thin when the process of large concentration drainage is performed. It is difficult to continuously form, and due to the formation of a non-uniform liquid film, there is a problem that the scale is easily generated at the damaged portion of the liquid film, and uses a batch type concentrator or a natural circulation method for high concentration.

However, the batch type concentrator and the natural circulation type concentrator use steam, and if the sample for concentration is in contact with a high temperature heat medium for a long time, there is a problem of thermal degeneration or destruction of characteristic components, and it is consumed for sample concentration. The problem is that it takes a long time.

In related prior art, Korean Patent Registration [10-0428379] discloses a concentrating device and a concentration method.

Korea Patent Registration [10-0428379] (Registration Date: 2004. 04. 09)

Accordingly, the present invention has been made to solve the problems described above, the object of the present invention is to allow the solution to flow evenly dispersed at the top, and at the same time the thin film falling type evaporation concentrator which can improve the energy efficiency To provide.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects, which are not mentioned above, will be clearly understood by those skilled in the art from the following description. .

In order to achieve the above object, a thin film-falling evaporation concentrator according to an embodiment of the present invention comprises: an evaporator 100 for evaporating and concentrating an introduced solution; A heating unit 200 for heating a fluid to be used as a heat source and supplying a heat source to the evaporator 100; A fluid circulation unit 300 connected to allow the fluid discharged from the evaporator 100 to flow into the evaporator 100; And an energy regeneration unit 400 provided on the fluid circulation unit 300 to increase the temperature of the fluid so that the circulated fluid can be used as a heat source again.

The evaporator 100 is a hollow solution, the solution receiving chamber 110 is formed with a solution inlet 111 is a solution inlet; A solution distributor (120) provided in the solution receiving chamber (110), accommodating a solution introduced from the solution inlet (111), and having a plurality of through holes (121) formed at a bottom thereof; A condensation tube 130 having a hollow inside, connected to a lower portion of the solution distributor 120, and having a heat source inlet 131 through which a heat source is introduced from the outside and a heat source outlet 132 through which the heat source flows out; A plurality of heat transfer tubes 140 provided in the vertical direction in the concentrating tube 130 and connected to the through-holes 121 of the solution distributor 120, respectively, in the form of tubes or pipes; And a gas liquid communicating with a lower portion of the heat transfer tubes 140 and separating a gas and a liquid by centrifugal force, and having a condensate discharge port 151 through which the separated liquid is discharged and an evaporation vapor discharge port 152 through which the separated gas is discharged. A separator (150);

The fluid circulation part 300 is characterized in that the fluid discharged to the evaporative steam outlet 152 is connected to the heat source inlet 131.

In addition, the solution receiving chamber 110 is characterized in that the gas inlet 112 through which the gas for preheating the solution is introduced is formed,

The thin film falling type evaporation concentrator includes a gas circulation unit 160 connected to the gas discharged to the heat source outlet 132 flows into the gas inlet 112.

The solution accommodating chamber 110 or the concentrating tube 130 may include a gas discharge port 113 for discharging gas when the internal pressure exceeds a predetermined pressure.

In addition, the solution distributor 120 is formed in a multi-layer, characterized in that the bottom surface is narrowed toward the upper side and stacked to reduce the number of through holes 110 at the same time.

In addition, the thickening tube 130 is partitioned inside the thickening tube 130 in a horizontal direction, a portion of the flow path forming film 135 formed through the passage through which the fluid is lowered; includes; The descending passage is formed alternately, it is characterized in that to maximize the flow path of the fluid.

In addition, the energy regeneration unit 400 is characterized in that using a thermal vapor recompressor (TVR) or a mechanical vapor recompressor (MVR).

In addition, the evaporator 100 is configured such that a plurality of evaporators 100 are sequentially connected, the connection from the previous evaporator 100 to the next evaporator 100, the evaporation steam outlet 152 of the previous evaporator 100 The fluid discharged to the next is connected to enter the heat source inlet 131 of the evaporator 100,

The fluid circulation unit 300 is characterized in that the fluid discharged to the evaporation steam outlet 152 of the last evaporator 100 is connected to the heat source inlet 131 of the previous evaporator 100.

According to the thin film falling type evaporation concentrator according to an embodiment of the present invention, since the empty space in the heat pipe is large, the flow rate of the circulation pump decreases, thereby reducing the electric power, and gas-liquid separation in the section where boiling occurs. Since it proceeds easily, the separation efficiency from pollutants during evaporation has a high effect.

In addition, since the solution descends in the form of a film in the heat transfer tube, the heat transfer coefficient is large, and thus the economical effect obtained by reducing the heat transfer area is small.

In addition, the residence time of the solution is shortened due to the increase of the flow rate due to the drag force caused by the rapidly descending evaporation gas in the heat transfer pipe, and the pressure inside the solution receiving chamber is lowered than the normal pressure by using a vacuum pump. This makes it suitable for the evaporative concentration of heat sensitive materials.

According to the thin film falling type evaporation concentrator according to another embodiment of the present invention, in which the gas circulation unit is added, the pressure inside the solution receiving chamber is higher than the normal pressure, so that the solution is pushed into the heat pipe more quickly, so that the solution is formed into a liquid film at the top of the heat pipe. By shortening the interval to help the initial stabilization of the liquid film can further reduce the residence time that the solution stays on the top of the heat transfer tube, thereby preventing the liquid film from breaking. The flow rate adjustment of the gas circulation part can be implemented by providing an orifice in the pipe constituting the gas circulation part.

In addition, the gas circulation part is particularly effective when the viscosity of the solution is large and when the solution contains a large amount of insoluble solids.

In addition, by using the fluid circulation unit and the energy regeneration unit, the energy to be condensed and discarded can be boosted and heated to be reused, thereby reducing the cost of supplying a heat source required for heat exchange.

In addition, by forming a solution distributor in a multi-layer, by evenly distributing the solution to the last layer directly connected to the heat pipe in the lowermost layer, there is an effect that can prevent the liquid film is broken in the lower portion of the heat pipe when the concentrated drainage is high.

In addition, by forming a flow path as a flow path forming film in the condenser tube, the fluid moves along a predetermined flow path, thereby removing dead zones where the flow of the fluid is stagnant, so that heat exchange with the solution can be more efficiently performed. It can work.

In addition, by using the TVR or MVR as the energy regeneration unit, there is an effect that can reduce the heating energy of the evaporator.

In addition, by using a plurality of evaporators sequentially connected, there is an effect that can produce a larger amount of solution quickly at a lower energy cost.

1 is a conceptual diagram of a thin film falling evaporation concentrator according to an embodiment of the present invention.
2 is a conceptual diagram of a thin film falling-type evaporation concentrator according to another embodiment of the present invention in which a gas inlet and a gas circulation unit are added to FIG. 1.
3 is a conceptual diagram of a thin film-fall type evaporation concentrator according to another embodiment of the present invention in which a gas outlet is added to FIG. 2.
4 is a conceptual diagram illustrating an example in which the solution distributor of FIG. 3 is formed in multiple layers.
5 is a conceptual diagram illustrating an example in which a flow path forming film of a heating fluid is formed in the concentrator tube of FIG. 4.
6 to 10 is a conceptual diagram of a thin film falling type evaporation concentrator according to an embodiment of the present invention in which a plurality of evaporators are sequentially connected.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, process, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present disclosure does not exclude the possibility of the presence or the addition of numbers, processes, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings will be described in more detail the present invention. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own inventions. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. In addition, unless there is another definition in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention in the following description and the accompanying drawings. Descriptions of well-known functions and configurations that may be unnecessarily blurred are omitted. The drawings introduced below are provided by way of example so that the spirit of the invention to those skilled in the art can fully convey. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals denote like elements throughout the specification. It should be noted that the same elements in the figures are represented by the same numerals wherever possible.

1 is a conceptual diagram of a thin film falling evaporation concentrator according to an embodiment of the present invention, Figure 2 is a thin film falling evaporation concentrator according to another embodiment of the present invention in which a gas inlet and a gas circulation is added to FIG. 3 is a conceptual diagram of a thin film-fall type evaporation concentrator according to another embodiment of the present invention in which a gas outlet is added to FIG. 2, and FIG. 4 is a conceptual diagram illustrating an example in which the solution distributor of FIG. 3 is formed in multiple layers. 5 is a conceptual diagram illustrating an example in which a flow forming film of a heating fluid is formed in the condenser tube of FIG. 4, and FIGS. 6 to 10 are conceptual views of a thin film falling type evaporation concentrator according to an embodiment of the present invention in which a plurality of evaporators are sequentially connected. to be.

Prior to the description, terms used in the specification (and claims) will be briefly described.

'Solution' refers to the object to be evaporated and concentrated.

The term “fluid” refers to an object for heat exchange with the “solution”, and may be a liquid, a gas, or the like, and preferably, a gas is used.

'Gas' refers to a gas in which the 'solution' is vaporized.

As shown in FIG. 1, the thin film-falling evaporation concentrator according to an embodiment of the present invention includes an evaporator 100, a heating unit 200, a fluid circulation unit 300, and an energy regeneration unit 400. .

The evaporator 100 evaporates and concentrates the introduced solution.

The heating unit 200 heats a fluid to be used as a heat source, and supplies a heat source to the evaporator 100.

That is, the evaporator 100 concentrates the high concentration solution by evaporating the low concentration solution by heat exchange between the fluid supplied from the heating unit 200 and the solution introduced into the evaporator 100.

The fluid circulation part 300 is connected such that the fluid discharged from the evaporator 100 flows back into the evaporator 100.

The energy regeneration unit 400 is provided on the fluid circulation unit 300 and raises the temperature of the fluid so that the circulated fluid can be used as a heat source again.

The fluid circulation unit 300 and the energy regeneration unit 400 are configured to reuse the enthalpy of the fluid discharged after the heat exchange is completed in the evaporator 100, and the energy regeneration unit 400 is configured to change the temperature of the fluid discharged from the evaporator 100. ) Raises the temperature, and the fluid circulation part 300 forms a movement passage of the fluid to allow the evaporator 100 to reuse the elevated temperature.

The movement of the fluid may use a differential pressure, gravity, a blower, a pump or the like.

The energy regeneration unit 400 includes a temperature sensor at a front end, a rear end, or a front end and a rear end, and the energy regeneration unit 400 raises the temperature of the fluid only when the temperature measured by the temperature sensor is lower than a preset temperature. Control to minimize energy loss.

For example, the temperature measured from the temperature sensor is lower than the preset temperature, but the present invention is not limited thereto, and the temperature measured from the temperature sensor corresponds to the preset temperature or falls within the preset temperature range. Various implementations are possible, such as controlling the energy regeneration unit 400 to adjust the temperature of the fluid.

At this time, the evaporator 100 includes a solution accommodating chamber 110, a solution distributor 120, a concentration tube 130, a heat transfer tube 140, a gas-liquid separator 150, and a gas circulation unit 160.

The solution accommodating chamber 110 has a structure in which a solution inlet part 111 in which a solution is introduced is received at one side to receive a solution requiring evaporation and concentration by being hollowed so that an accommodating space for accommodating a solution is formed therein. .

The solution distributor 120 is provided inside the solution receiving chamber 110, accommodates the solution introduced from the solution inlet 111, and has a plurality of through holes 121 formed at the bottom thereof.

The solution distributor 120 is installed on the condenser tube 130 in order to maintain a uniform film of the liquid inside the heat transfer tube 140 mounted on the condenser tube 130.

The solution distributor 120 may be applied in various structures, and may be selectively used by introducing a solution distributor 120 having a suitable structure according to the component of the liquid to be added.

The solution distributor 120 has a smaller outer diameter than the through hole 121 in the form of a hollow column for each through hole 121 connected to the heat transfer tube 140 to be described later, and the lower side of the heat transfer tube 140 is upper. It may have a structure in which a gas discharge tube (not shown) is partially introduced into the upper side and formed higher than the side wall of the solution distributor 120.

The gas discharge tube (not shown) may serve to help lower the solution to form a thin film-like thin film on the inner wall of the heat transfer tube 140.

This is because the pressure inside the solution receiving chamber 110 is increased due to the gas introduced into the gas inlet 112, a portion of the gas introduced into the gas inlet 112 is a heat transfer tube 140 through a gas discharge tube (not shown). This is because the solution descending along the inner wall of the heat transfer tube 140 may help to form a thin film in a thin film form.

The concentration tube 130 is hollow inside, is connected to the lower portion of the solution distributor 120, the heat source inlet 131 through which the heat source is introduced from the outside and the heat source outlet 132 through which the heat source is formed.

The condenser tube 130 is provided to receive a fluid to be used as a heat source from the heating unit 200 so as to exchange heat with a solution inside the heat exchanger tube 140. 140 is provided.

In addition, the condenser tube 130 is supplied with a fluid to be used as a heat source through the heat source inlet 131, the fluid used as the heat source is discharged to the heat source outlet 132, accordingly, the heat source inlet 131 It may be provided at the top of the thickening tube 130, the heat source outlet 132 may be provided at the bottom of the thickening tube (130). This is to allow the hot fluid to be used as the heat source and the cold fluid to be used as the heat source to facilitate the discharge of the hot fluid according to the natural law that the hot fluid rises and the cold fluid descends.

The heat transfer tube 140 may be provided in the vertical direction in the concentration tube 130, and a plurality of heat transfer tubes 140 may be provided in the form of a tube or a pipe connected to the through-holes 121 of the solution distributor 120, respectively.

The solution flowing into the evaporator 100 descends by forming a thin film-like thin film on the inner tube or the inner wall of the heat transfer tube 140, and the fluid used as a heat source flows down the outer wall of the tube. It evaporates on the principle of evaporation while exchanging heat with the fluid used as this heat source.

At this time, since the heat transfer tube (140) and the heat transfer (heat transfer) is made in the heat transfer tube 140, the heating time for vaporizing the solution is very short, and the gas specific volume is large because the empty space in the heat transfer tube 140 is large. This facilitates gas-liquid separation.

In addition, the volume occupied by the solution in the empty space inside the heat transfer tube 140 is very short to reach the normal operation of the concentrator, and even when the operation is stopped, the amount of the remaining solution is small so that the discharge of the residual solution can be performed in a short time. have.

Therefore, the evaporator 100 having the structure as described above is suitable for the evaporation and concentration of a material sensitive to thermal denaturation because the residence time of the solution is short and the low temperature concentration is possible due to the increase in the flow rate of the evaporation gas in the heat transfer tube 140.

That is, the evaporator 100 is a thin film drop method, so that the solution from the top by the force of gravity and steam to form a thin film in the inner film flows quickly, the evaporation efficiency is excellent, but the heat transfer tube 140 when the liquid film is broken. Since there is a risk of the scale on the inner wall is required to experiment and review in advance, it is necessary to design the solution distributor 120 to distribute the solution evenly to the plurality of heat pipes 140 from the top.

The gas-liquid separator 150 provided in the evaporator 100 communicates with the lower parts of the heat transfer tubes 140 to separate gas and liquid by centrifugal force, and the gas-liquid separator 150 discharges the separated liquid from the condensate outlet 151. And an evaporated steam outlet 152 through which the separated gas is discharged.

Since the solution in the evaporator 100 is concentrated while passing through the heat pipe 140, a large amount of steam is generated at the same time as the solution passes through the heat pipe 140, wherein the solution passed through the heat pipe 140 is gas and The liquid is mixed, the solution of the gas and the liquid mixture is passed through the gas-liquid separator 150 and the gas and the liquid is separated while passing through the gas-liquid separator 150.

The gas circulation unit 160 is connected so that the gas discharged from the heat source outlet 132 flows into the gas inlet 112.

The gas circulation unit 160 is for reusing the pressure and enthalpy of the gas discharged to the heat source outlet 132 and preheating the solution in the solution accommodating chamber 110 with the gas discharged to the heat source outlet 132. When used for the purpose, the energy efficiency can be further increased, and at the same time, the gas introduced into the gas inlet 112 increases the pressure inside the solution accommodating chamber 110 to transfer the solution contained in the solution distributor 120 into the heat transfer tube 140. The pushing force can be added to shorten the residence time of the solution, thereby preventing the liquid film from cracking.

In addition, the fluid circulation unit 300 has a structure connected to the fluid discharged to the evaporation steam outlet 152 to the heat source inlet 131, the fluid circulation unit 300 is discharged to the evaporation steam outlet 152 To reuse the enthalpy of the fluid, the evaporative steam outlet 152 and the heat source inlet 131 are in communication with each other.

As shown in Figure 2, the solution receiving chamber 110 of the thin film falling type evaporation concentrator according to an embodiment of the present invention is characterized in that the gas inlet 112 through which the gas for preheating the solution is introduced, The thin film falling type evaporation concentrator having such a structure may include a gas circulation unit 160 connected to allow the gas discharged to the heat source outlet 132 to enter the gas inlet 112. At this time, the solution receiving chamber 110 may be preheated by receiving a solution that requires evaporation and concentration.

As shown in FIG. 3, the solution accommodating chamber 110 of the thin film-falling evaporation concentrator according to an embodiment of the present invention includes a gas outlet 113 for discharging gas when the internal pressure exceeds a predetermined pressure. It may be characterized by.

The pressure inside the solution receiving chamber 110 or the internal pressure of the concentrating tube 130 may be adjusted by the gas outlet 113.

The gas outlet 113 may use a relief valve or the like.

The relief valve is a valve for ejecting pressure or a safety valve. The relief valve is a valve for ejecting a fluid to the outside of the tank when the pressure in the pressure vessel chamber or the like becomes above a predetermined pressure.

As shown in FIG. 4, the solution distributor 120 of the thin film-falling evaporation concentrator according to an embodiment of the present invention is formed in a multi-layer, and the bottom surface thereof is narrowed toward the upper side and the number of through holes 110 is increased. It may be characterized by being laminated so as to be small.

For example, one layer (top layer) forms four through-holes 110, two layers form sixteen through-holes 110, and three layers penetrate toward lower layers such as forming sixty-four through-holes. The number of balls 110 can be configured to increase.

In addition, the size of the through hole 110 may be reduced toward the lower layer.

This is to reduce the difference between the flow rate passing through the through holes 110 of the uppermost layer and the flow rate passing through the through holes 110 of the lowermost layer.

As shown in FIG. 5, the thickening tube 130 of the thin film falling type evaporation concentrator according to the exemplary embodiment of the present invention is configured to partition the inside of the thickening tube 130 in a horizontal direction. Comprising a plurality of flow path forming film 135 is formed, the passage in which the fluid is descending can be alternately formed to maximize the movement path of the fluid.

The flow path forming film 135 is formed so that a fluid flow path is formed in the thickening pipe 130 so that the fluid moves along a predetermined flow path, and partitions the inside of the thickening pipe 130 into layers. It is preferable to form a flow path so that the down to the bottom layer in a zigzag form.

This is to allow the heat exchange of the fluid to some extent as it descends to the lower side, and to allow the fluid having a degree of heat exchange to flow out to the heat source outlet.

The energy regeneration unit 400 of the thin film drop type evaporation concentrator according to an embodiment of the present invention uses a thermal vapor recompressor (TVR) or a mechanical vapor recompressor (MVR). It can be characterized.

The energy regeneration unit 400 may directly heat the fluid discharged from the evaporative steam outlet 152 using a heater, but TVR (Thermal Vapor) is an energy regeneration device that can apply the temperature difference between the heat medium and the product as it is. It is also possible to use a recompressor (thermal vapor recompressor) or an MVR (Mechanical Vapor Recompressor).

TVR is a device that raises the pressure of low pressure steam by mixing the low pressure steam and the high pressure steam thermodynamically using the momentum exchange. If the high-pressure steam is not spontaneously ejected during the mixing process, only the temperature of the low-pressure steam is increased and the pressure cannot be increased. When using the TVR as an energy regeneration device, it is desirable to select the difference between the suction pressure and the discharge pressure as narrow as possible to increase the energy regeneration efficiency. Load regulation of the TVR can be achieved by varying the pressure of the driven steam.

MVR is a device that raises the temperature by compressing the gas. For example, using a blade of an impeller that rotates at high speed, the kinetic energy can be applied to the gas, and then the pressure and temperature of the gas can be raised by changing the kinetic energy into pressure energy. Load regulation of the MVR can be achieved by varying the rotational speed of the drive motor.

That is, by using the energy regeneration unit 400 without recycling the fluid flowing out of the evaporation steam outlet 152, it is possible to significantly reduce the thermal energy and cost consumed when operating the system to improve the economics.

In addition, it is possible to reduce the amount of steam supplied from the outside during the operation of the system, it is possible to reduce the operating cost of the device, it can significantly increase the economics.

6 to 10, the evaporator 100 of the thin film falling type evaporation concentrator according to an embodiment of the present invention is configured such that a plurality of evaporators 100 are sequentially connected, the previous evaporator 100 In the connection to the next evaporator 100, the fluid discharged to the evaporation steam outlet 152 of the previous evaporator 100 is connected to enter the heat source inlet 131 of the next evaporator 100, the fluid circulation unit 300 ) May be characterized in that the fluid discharged to the evaporation steam outlet 152 of the last evaporator 100 is connected to the heat source inlet 131 of the previous evaporator 100.

6 to 8, even if the evaporation is concentrated using a plurality of evaporator 100 can be operated using only one heating unit (200).

In general, when one heating unit 200 is used, five evaporators 100 may be operated without the energy regeneration unit 400.

That is, if the next evaporator 100 can be operated without the energy regeneration unit 400, the energy regeneration unit 400 may be omitted in the corresponding section. (See FIGS. 6 to 8).

6 to 8, when there is a section in which the energy regeneration unit 400 is omitted, the fluid discharged to the evaporation steam outlet 152 of the last evaporator 100 immediately before the heat source inlet of the evaporator 100 ( 131), but the fluid discharged to the evaporative steam outlet 152 of the last evaporator 100 except for a very special case (different boiling temperature of the solution) is the energy recovery unit It is more preferable to connect (see FIG. 6) to be introduced to the front end of the 400.

Here, the previous evaporator 100 does not mean just the previous evaporator 100 but may include all of the previous evaporators 100.

For example, when using the evaporator 100 from 1 to 10 sequentially connected, the fluid discharged to the evaporation steam outlet 152 of the 10 evaporator 100 is 1 to 9 times the evaporator 100 The fluid circulation unit 300 may be implemented to be introduced into the heat source inlet 131 of any one of the evaporator 100.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

100: evaporator
110: solution receiving chamber
111: solution inlet 112: gas inlet
113: gas outlet
120: solution distributor
121: through hole
130: thickening tube
131: heat source inlet 132: heat source inlet
135: flow path forming film
140: heat pipe
150: gas-liquid separator
151: condensate outlet 152: evaporated steam outlet
160: gas circulation
200: heating unit
300: fluid circulation
400: energy regeneration unit

Claims (7)

An evaporator 100 for evaporating and concentrating the introduced solution;
A heating unit 200 for heating a fluid to be used as a heat source and supplying a heat source to the evaporator 100;
A fluid circulation unit 300 connected to allow the fluid discharged from the evaporator 100 to flow into the evaporator 100; And
An energy regeneration unit 400 provided on the fluid circulation unit 300 and increasing a temperature of the fluid so that the circulated fluid can be used as a heat source again;
Including;
The evaporator 100,
A solution accommodating chamber 110 in which the inside is hollow and has a solution inlet 111 through which a solution is introduced;
A solution distributor (120) provided in the solution receiving chamber (110), accommodating a solution introduced from the solution inlet (111), and having a plurality of through holes (121) formed at a bottom thereof;
A condensation tube 130 having a hollow inside, connected to a lower portion of the solution distributor 120, and having a heat source inlet 131 through which a heat source is introduced from the outside and a heat source outlet 132 through which the heat source flows out;
A plurality of heat transfer tubes 140 provided in the vertical direction in the concentrating tube 130 and connected to the through-holes 121 of the solution distributor 120, respectively, in the form of tubes or pipes; And
The gas-liquid separator which communicates with the lower parts of the heat transfer tubes 140, separates gas and liquid by centrifugal force, and has a condensate outlet 151 through which the separated liquid is discharged and an evaporative vapor outlet 152 through which the separated gas is discharged. 150;
Including,
The fluid circulation part 300,
The fluid discharged to the evaporative steam outlet 152 is connected to the heat source inlet 131,
The solution accommodating chamber 110 is characterized in that the gas inlet 112 through which the gas for preheating the solution is introduced is formed,
The thin film falling type evaporation concentrator includes a gas circulation unit 160 connected to the gas discharged to the heat source outlet 132 to enter the gas inlet 112;
Thin film falling type evaporation concentration apparatus comprising a.
delete The method of claim 1,
The solution accommodating chamber 110 is a thin film falling-type evaporation concentrator comprising a; gas discharge port 113 for discharging the gas when the internal pressure exceeds a predetermined pressure.
The method of claim 1,
The solution distributor 120 is formed in a multi-layer, thin film falling type evaporation concentrator, characterized in that the bottom surface is narrowed toward the upper side and stacked so that the number of through-holes 110 is reduced.
The method of claim 1,
The thickening tube 130 is partitioned inside the thickening tube 130 in a horizontal direction, a plurality of passage forming film 135 formed through the passage through which the fluid is lowered; includes;
And a passage through which the fluid descends is alternately formed to maximize a flow path of the fluid.
The method of claim 1,
The energy regeneration unit 400 is a thin film falling type evaporation concentrator, characterized in that using a thermal vapor recompressor (TVR) or a mechanical vapor recompressor (MVR).
The method of claim 1,
The evaporator 100 is configured such that a plurality of evaporators 100 are sequentially connected,
The connection from the previous evaporator 100 to the next evaporator 100 is connected so that the fluid discharged to the evaporation steam outlet 152 of the previous evaporator 100 flows into the heat source inlet 131 of the next evaporator 100,
The fluid circulation unit 300 is a thin film falling type evaporation, characterized in that the fluid discharged to the evaporation steam outlet 152 of the last evaporator 100 is introduced into the heat source inlet 131 of the previous evaporator 100 Device.

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