KR20110022850A - A circle thin film vaporization equipment and control method for the same - Google Patents

Abstract

PURPOSE: A centrifugal thin film evaporator, and a controlling method thereof are provided to smoothly evaporate fluid inside the evaporator by using the centrifugal force of a disk for increasing the contact area between the fluid and heat. CONSTITUTION: A centrifugal thin film evaporator comprises the following: a heating unit(20) for heating a housing(10); a guiding unit(40) guiding fluid to the lower side along to a shaft(31); a round-plate(51) rotating to form the centrifugal force for producing a thin film of the fluid on a disk; a first evaporating unit(50) performing a primary evaporation process by increasing the electric heating area between the fluid and heat; a compulsive thin film formed in between blades(52) and the inner circumference of the housing; and a pre-heating unit(60) for transferring the heat to the inside of the housing using a heater(61).

Description

Centrifugal Thin Film Vaporizer and Control Method {A circle Thin film Vaporization equipment and Control Method For The Same}

The present invention relates to a centrifugal thin film evaporation apparatus and a control method thereof, and more particularly, a heating means is provided on an outer circumferential surface thereof to vertically penetrate an inside of a housing in a vacuum state in which the inside is heated. A plurality of disks are installed in the direction, a plurality of blades are installed on the lower surface of the disk, the fluid flowing through the upper portion of the housing is provided in the plurality of disks and transferred to the outer peripheral surface of the disk by centrifugal force and at the same time A thin film is formed on the upper surface, and the first evaporation is suddenly caused by the internal temperature and the vacuum due to the simultaneous effect of the formation of the thin film and the increase in the evaporation heat transfer area, and the remaining fluid which has not been evaporated from the disk is transferred from the upper surface of the disk to the inner surface of the housing. An image attached to the lower part of the disc when it is transported between and flows through the inner circumferential surface of the housing. Also, a forced thin film is formed between the blade and the inner circumferential surface of the housing so that the secondary evaporation of the fluid occurs due to the internal temperature and the inner circumferential surface of the housing, thereby rapidly increasing the efficiency of the evaporator and rotating by the rotation of the motor. The pump is installed in the lower portion of the shaft and driven by the rotation of the shaft is provided in the lower portion of the inside of the housing, pumping the non-vaporized fluid stored in the lower portion of the housing to the fluid inlet of the upper portion of the housing so that the fluid is The continuous evaporation occurs while circulating, and a circulation pump for circulating fluid is installed inside the housing, so that the installation space for driving the evaporator is greatly reduced, thus achieving compactness of the apparatus and being limited by the installation position. Centrifugal thin film evaporation apparatus and control method accordingly.

The method of purifying waste oil is generally classified into chemical treatment and physical treatment. The chemical treatment method is typical of the ionic refining method used by the existing waste oil recycling companies, but this method is a high-temperature pyrolysis method, which is a physical method in the Ministry of Environment since the quality of refined products is low and contains many environmental pollutants. A change is recommended.

On the other hand, high-temperature pyrolysis is a high value-added purification method because it has higher quality level of purified products and less environmental pollutants than ion purification method.

However, the high temperature pyrolysis method has a disadvantage that the product is unstable, tar is generated, and bad odor because it is pyrolyzed by heating to a high temperature (370 ℃ ~ 550 ℃) at atmospheric pressure. After a certain period of time, sediment is formed, and tar causes clogging of the combustion nozzle and piping when the burner is used. In addition, because the equipment is operated at a high temperature, the durability of the equipment is short, the risk of fire and explosion is relatively high, the plant must be shut down to deal with the sludge generated, the initial investment cost of the equipment is high, Required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems,

A heating means is provided on the outer circumferential surface to vertically penetrate the inside of the vacuum housing in which the inside is heated, and a plurality of discs are installed in the longitudinal direction on an axis rotated by a motor, and a plurality of blades are installed on the bottom surface of the disc. In addition, the fluid flowing through the upper portion of the housing is provided in the plurality of disks and transferred to the outer circumferential surface of the disk by centrifugal force, and at the same time a thin film is formed on the upper surface of the disk. A forced thin film is also formed between the blade attached to the bottom of the disc and the housing inner circumferential surface when the difference evaporates rapidly and the remaining fluid which is not evaporated in the disc flows from the upper surface of the disc to the inner surface of the housing and flows through the inner circumference of the housing. Is formed by the internal temperature and the temperature of the inner peripheral surface of the housing. The secondary evaporation of the sieve occurs, and the purpose of the present invention is to provide a centrifugal thin film evaporation apparatus and a control method accordingly, in which the efficiency of the evaporation apparatus is rapidly increased.

In addition, a pump installed under the shaft rotated by the rotation of the motor and driven by the rotation of the shaft is provided in the lower portion of the housing to pump the non-evaporated fluid stored in the lower portion of the housing to the fluid inlet of the upper portion of the housing. As the fluid circulates in the upper and lower portions of the housing, continuous evaporation occurs, and a circulation pump for circulating fluid is installed inside the housing, so that the installation space for driving the evaporator is greatly reduced, thereby achieving compactness of the apparatus. Of course, there is another object to provide a centrifugal thin film evaporator that is not restricted by the installation location.

In order to achieve the above object, the present invention is provided with a transfer pipe for transferring the fluid inside the inside in a vacuum state through the upper side is provided to the inside, to evaporate the fluid introduced into the interior through the transfer pipe A housing having a steam outlet formed at an upper portion thereof so that the converted gas is discharged to the outside;

A heating unit provided on an outer circumferential surface of the housing to heat the inner circumferential surface and the inside of the housing;

A drive unit comprising a motor provided on an upper surface of the housing and an axis connected to the motor and vertically penetrating into the housing to be rotated by the motor;

An induction part provided in an upper portion of the shaft and formed in a funnel shape in cross section so that fluid introduced through the transport pipe is guided downward along the axis;

A plurality of discs are installed concentrically with the housing and spaced apart in the longitudinal direction on the outer circumferential surface of the shaft, and the fluid transferred along the shaft through the guide portion is supplied to the upper surface of the disc located on the uppermost side of the plurality of discs installed on the shaft, As the fluid is transferred to the outer circumferential surface of the disk by the centrifugal force during the rotation of the disk, a thin film of fluid is formed on the upper surface of the disk and the heat transfer area between the fluid and the heat per unit volume increases to cause the first evaporation. After that, the residual fluid is transferred to the space between the outer circumferential surface of the disc and the inner circumferential surface of the housing by centrifugal force and is provided perpendicularly to the lower surface of the disc as it flows along the space to rotate in accordance with the rotation of the disc. The increase in secondary evaporation due to the formation of a forced thin film between one end face and the inner circumferential face of the housing Unit;

And a preheating unit formed through the lower side of the housing to transfer external heat to the inside of the housing through a heater to heat the stored fluid.

In addition, the present invention is a control method of the centrifugal thin film evaporator,

Maintaining the inside of the housing in a vacuum state by the vacuum means, opening the solenoid valve V1 provided in the transfer pipe, and introducing a fluid from the outside into the inside of the housing by the pressure difference of the vacuum (S100);

Dropping the introduced fluid into the induction part to guide the fluid to the disc of the evaporation part through the induction part (S200);

The disk is rotated by the shaft, the fluid is transferred to the outer peripheral surface of the disk by the centrifugal force on the upper surface of the disk to form a primary thin film and the fluid is evaporated (S300);

The second step of evaporating and forming a second thin film of fluid between the blade and the inner circumferential surface of the housing while the fluid not evaporated from the disc falls on the outer circumferential surface of the disc (S400);

Filling the lower end of the housing with fluid not evaporated through the evaporator formed in multiple stages on the shaft, and heating the filled fluid through a preheater (S500);

When the fluid filled in the lower end of the housing is filled up to the upper position sensor provided in the lower portion of the housing, the solenoid valve (V1) is closed, the solenoid valve (V2) is opened and through the flow control valve through the pump back to the transfer pipe A step S600 of transferring and circulating the fluid to the upper and lower parts of the housing;

When the continuous evaporation occurs inside the housing and the amount of fluid present in the housing decreases so that the fluid filled in the lower end of the housing reaches the lower position sensor provided at the bottom of the housing, the solenoid valve V2 is again A closed and the solenoid valve (V1) is opened, the fluid flows into the housing from the outside by a vacuum (S700) to continuously inflow and evaporation of the fluid; comprising a centrifugal thin film evaporator, characterized in that It relates to a control method of.

As described above, in the centrifugal thin film evaporation apparatus and the control method according to the present invention, a plurality of disks are installed on a shaft formed vertically through the inside of the housing, and a plurality of blades are installed on the bottom surface of the disk, The fluid introduced through the upper portion of the housing is distributed to a plurality of discs and transferred to the outer circumferential surface of the disc by centrifugal force, so that the area in which the fluid is in contact with heat increases and evaporates smoothly. It is formed to increase the evaporation force of the fluid, thereby increasing the efficiency of the evaporator.

In addition, the pump driven by the rotation of the motor is provided inside the housing, thereby reducing the space of the evaporator there is an effect that is not restricted by the installation position.

In addition, even while the fluid is introduced into the housing, the fluid evaporates continuously within the housing, and the fluid is circulated up and down by the circulation pump in the housing.

The present invention has the following features to achieve the above object.

The present invention has a transport pipe for transporting the external fluid to the inside in a vacuum state is formed through the upper side and provided up to the inside, the gas converted by evaporating the fluid introduced into the interior through the transport pipe to the outside A housing having a steam outlet formed at an upper side thereof to be discharged;

A heating unit provided on an outer circumferential surface of the housing to heat the inner circumferential surface and the inside of the housing;

A drive unit comprising a motor provided on an upper surface of the housing and an axis connected to the motor and vertically penetrating into the housing to be rotated by the motor;

An induction part provided in an upper portion of the shaft and formed in a funnel shape in cross section so that fluid introduced through the transport pipe is guided downward along the axis;

A plurality of discs are installed concentrically with the housing and spaced apart in the longitudinal direction on the outer circumferential surface of the shaft, and the fluid transferred along the shaft through the guide portion is supplied to the upper surface of the disc located on the uppermost side of the plurality of discs installed on the shaft, As the fluid is transferred to the outer circumferential surface of the disk by the centrifugal force during the rotation of the disk, a thin film of fluid is formed on the upper surface of the disk and the heat transfer area between the fluid and the heat per unit volume increases to cause the first evaporation. After that, the residual fluid is transferred to the space between the outer circumferential surface of the disc and the inner circumferential surface of the housing by centrifugal force and is provided perpendicularly to the lower surface of the disc as it flows along the space to rotate in accordance with the rotation of the disc. The increase in secondary evaporation due to the formation of a forced thin film between one end face and the inner circumferential face of the housing Unit;

And a preheating part formed through the lower side surface of the housing to transmit external heat to the inside of the housing through a heater to heat the stored fluid.

In addition, the present invention is a control method of the centrifugal thin film evaporator,

Maintaining the inside of the housing in a vacuum state by the vacuum means, opening the solenoid valve V1 provided in the transfer pipe, and introducing a fluid from the outside into the inside of the housing by the pressure difference of the vacuum (S100);

Dropping the introduced fluid into the induction part to guide the fluid to the disc of the evaporation part through the induction part (S200);

The disk is rotated by the shaft, the fluid is transferred to the outer peripheral surface of the disk by the centrifugal force on the upper surface of the disk to form a primary thin film and the fluid is evaporated (S300);

The second step of evaporating and forming a second thin film of fluid between the blade and the inner circumferential surface of the housing while the fluid not evaporated from the disc falls on the outer circumferential surface of the disc (S400);

Filling the lower end of the housing with fluid not evaporated through the evaporator formed in multiple stages on the shaft, and heating the filled fluid through a preheater (S500);

When the fluid filled in the lower end of the housing is filled up to the upper position sensor provided in the lower portion of the housing, the solenoid valve (V1) is closed, the solenoid valve (V2) is opened and through the flow control valve through the pump back to the transfer pipe A step S600 of transferring and circulating the fluid to the upper and lower parts of the housing;

When the continuous evaporation occurs inside the housing and the amount of fluid present in the housing decreases so that the fluid filled in the lower end of the housing reaches the lower position sensor provided at the bottom of the housing, the solenoid valve V2 is again The solenoid valve (V1) is closed, the fluid is introduced into the housing from the outside by a vacuum (S700) that the inflow and evaporation of the fluid continuously occurs; characterized in that it comprises a.

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this 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 invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a cross-sectional view showing a centrifugal thin film evaporation apparatus according to an embodiment of the present invention, Figure 2 is a perspective view showing an evaporation unit according to an embodiment of the present invention, Figure 3 is an enlarged view showing a portion A of FIG. .

As shown in FIG. 1, the centrifugal thin film evaporator 100 of the present invention includes a housing 10, a heating unit 20, a driving unit, and an induction unit to evaporate a fluid such as waste oil, lubricating oil, or general water. 40, the evaporator 50, and the preheater 60.

The housing 10 is formed to be elongated in the vertical direction in a cylindrical shape as a whole, and the inside thereof is maintained in a vacuum state. In this case, the inside of the housing 10 is connected to the vacuum pump and the tube in order to maintain the vacuum at all times by the vacuum pump (not shown) installed inside the housing 10.

Here, the upper one side surface of the housing 10 is formed through the transfer pipe 11 for transferring the external fluid to the inside, the transfer pipe 11 is provided to the inside of the housing 10 to the end is lower The fluid is bent, the fluid is delivered from an external fluid tank (not shown), and the fluid is sucked into the housing 10 by the vacuum pressure because the inside of the housing 10 is in a vacuum state. will be.

In addition, the transfer pipe 11 is provided with a solenoid valve (V1) to open and close the pipeline, the solenoid valve (V1) is controlled by a control device (not shown) connected to the outside.

In addition, the lower surface of the housing 10 is the sludge discharge port 12 is formed so that the sludge is left after the evaporation of the fluid introduced through the transfer pipe 11 is provided at the lower end of the housing 10 to discharge to the outside. The sludge outlet 12 is formed with an inclined bottom surface toward the sludge outlet 12 so as to smoothly discharge the sludge, and the upper surface of the housing 10 is inclined to smoothly discharge the vapor of the evaporated fluid to the outside. do.

Here, the steam outlet 13 for guiding the discharge of steam to the outside is in communication with the inclined upper portion of the housing (10).

In addition, a plurality of position sensors 14a and 14b are formed at the lower end of the housing 10 to penetrate the inside and the outside of the housing 10 to measure the storage amount of the fluid introduced therein, and the position sensors 14a, 14b) is provided with a height difference between the upper position sensor 14a and the lower position sensor 14b, respectively, to measure the amount of storage of the fluid, and the measured data measured by the position sensors 14a and 14b are transmitted to the control device. The internal fluid amount of the centrifugal thin film evaporator 100 can be controlled.

Here, the lower position sensor 14b installed at the lower end of the housing 10 to prevent damage due to overheating of the preheater 60 is preheated 60 installed through the lower end of the housing 10. Installed in a higher position, the preheater 60 is always located in oil.

In addition, the outer peripheral surface of the housing 10 is provided with a heating unit 20 such as a fruit circulation jacket to heat the inner peripheral surface and the inside of the housing 10.

The heating unit 20 may be a heat medium oil or heated air, an electric heater from the outside, and when flowing a high temperature fluid such as heat medium oil or air into the heating unit 20 is introduced from the bottom to discharge to the top The inlet 21 is installed at the lower outer periphery of the heating unit 20 so that the heating medium 20 is heated so that the heat medium introduced through the inlet 21 heats the inside of the housing 10 and is then discharged to the outside again. The outlet 22 is formed on the outer periphery of the upper end of the portion 20.

Of course, when the heating unit 20 is used as an electric heater, there is no circulating jacket for heating the fruit, and the outer surface of the housing 10 may be directly heated by an electric heater.

The drive unit is composed of a motor 30, a shaft 31, and a pump 32, the motor 30 is provided on the upper surface of the housing 10, the rotation speed (rpm) is controlled by a controller The shaft 31 is coupled to the motor 30 to penetrate the inside of the housing 10 vertically, and the pump 32 is connected to the lower end of the shaft 31 and provided inside the housing 10. do.

Here, the pump 32 is a pump for circulating the fluid in the housing 10 and the pump 32 is driven by the rotation of the shaft 31 without a separate power supply.

In addition, the pump 32 is provided with an inlet pipe 33 in the lower direction of the pump 32 to pump and discharge the fluid stored in the lower portion of the housing 10, by the driving of the pump 32 A discharge pipe connected to one side of the pump 32 so that the fluid introduced into the pump through the pump inlet pipe 33 is transferred to the induction part 40 provided at the upper portion of the housing 10 through the circulation pipe 70 ( 34 protrudes out of the housing 10.

Here, to allow the fluid in the lower portion of the housing 10 to be transferred to the induction part 40 provided in the upper portion of the housing 10 through the discharge pipe 34 by the driving of the circulation pump 32. A circulation pipe 70 is further formed between the induction part 40 and the discharge pipe 34, and the circulation pipe 70 communicates with the transfer pipe 11.

In addition, the circulation pipe 70 is further provided with a solenoid valve (V2) to open and close the pipeline, the solenoid valve (V2) is controlled by the signal of the control device.

In addition, the circulation pipe 70 may be further provided with a flow rate control valve 72 to adjust the amount of fluid to be transferred.

In addition, the discharge pipe 34 is provided with a bypass pipe (71). One end of the bypass pipe 71 communicates with the lower portion of the housing 10, and the other end communicates with the discharge pipe 34 and the circulation pipe 70 simultaneously. The bypass pipe 71 is further provided with a solenoid valve (V3).

Here, the bypass pipe 71 rotates while the fluid is flowing into the housing 10 through the transfer pipe 11, and the pump 32 is also operated. In addition, the fluid is provided through the discharge pipe 34 to bypass the inside of the housing 10 without being transferred to the circulation pipe 70.

The induction part 40 is provided at an upper position of the shaft 31 provided inside the housing 10 and is fixedly installed inside the housing 10, and the fluid introduced through the circulation pipe 70. Is introduced into the induction part 40, and the fluid is formed in the shape of a funnel in cross section so as to be guided downward along the axis 31.

Here, the induction part 40 is formed concentrically with the shaft 31 so that the outer peripheral surface of the shaft 31 and the lower inner peripheral surface of the induction part 40 are provided spaced at a predetermined interval, thereby falling away from the induction part 40. The fluid is conveyed to the upper portion of the disc 51 along the shaft 31 through the spaced gap.

2 and 3, the evaporator 50 is composed of a disc 51 and a blade 52, the disc 51 is the outer periphery of the shaft 31 which is the lower end of the guide portion 40 A plurality of spaced apart at regular intervals in the longitudinal direction is installed, the plurality of blades 52 are vertically spaced apart in the circumferential direction on the lower surface of the disc (51). At this time, the disc 51 is coupled to the shaft 31 is rotated simultaneously with the rotation of the shaft (31).

Here, the disk 51 is the fluid transported along the shaft 31 is provided on the upper surface of the disk 51 is transferred to the outer periphery of the disk 51 by the centrifugal force during the rotation of the disk 51 A thin thin film of fluid is formed on the upper surface of the disc 51, and such a thin film evaporates very easily even in a small heat, and evaporation occurs very smoothly even at a low temperature in a vacuum state.

In addition, the thin film formed on the upper surface of the disk 51 is very easy to evaporate by increasing the heat transfer area of the fluid and heat.

In addition, one end surface of the disc 51, that is, near the center portion in which the shaft 31 is inserted, has a fluid transfer hole 53 formed in the circumferential direction, so that some of the fluid introduced into the disc 51 falls directly below the disc. The remaining fluid is transferred to the outer circumferential side of the disc 51 by centrifugal force, and a thin film is formed. The disc 51 is provided with a plurality of discs. Will increase.

In addition, due to the large number of the disc 51, the vapor of the fluid evaporated in the interior of the housing 10 may be restricted to move to the upper portion of the housing 10 to smoothly discharge to the outside of the housing 10. In consideration of an advantage, a plurality of vapor transfer holes 54 are formed at one end surface of the disc 51, and a plurality of vapor transfer holes 54 are formed radially around a central portion of the disc 51. The vapor transfer hole 54 is spaced apart from the fluid transfer hole 53 and does not interfere with each other.

Here, the blade 52 is formed perpendicular to the lower surface of the disk 51, the blade 52, as shown in Figure 1, the outer periphery of the disk 51 and one side of the blade 52 It is provided in the lower end surface of the original plate 51 so that it may become collinear.

In addition, between the outer circumferential surface (one side of the blade 52) of the disk 51 and the inner circumferential surface of the housing 10, the disk 51 is formed so as to be spaced apart by 1-2mm, the centrifugal force of the disk 51 Thin film evaporation occurs at the upper surface and the remaining residual fluid moves to the inner circumferential surface of the housing 10 by centrifugal force and flows along the inner circumferential surface of the housing, and at one side of the blade 52 provided at the lower portion of the rotating disk 51. As a result, a forcible thin film 55 is formed between the blade 52 and the inner circumference of the housing 10, and the fluid thin film 55 also actively evaporates even at a low temperature in a vacuum state.

That is, the fluid flowing into the housing 10 as a whole is first evaporated by a thin film formed on the upper surface of the disc 51, and a forced thin film formed between the blade 52 and the inner peripheral surface of the housing 10. By the second evaporation occurs, the evaporation performance is drastically increased.

Here, the disk 51 is provided in a horizontal plane, but considering the centrifugal force and the formation of a thin film and the fluid transfer to the lower disk, forming the upper surface 51 of the disk 51 to be inclined in the outer circumferential direction. More preferred.

That is, the disc 51 is formed to be inclined upwardly in the outer circumferential direction with respect to the center portion, more preferably in the form of a funnel shape with a gentle angle in cross section.

The preheating unit 60 is formed through the lower side of the housing 10 to transfer external heat into the housing 10 through the heater 61 to heat the fluid stored in the lower portion of the housing 10. As a role, the heating apparatus generally used may be used.

The centrifugal thin film evaporation apparatus 100 described above is controlled by a controller installed and connected to the outside. Hereinafter, the control method of the centrifugal thin film evaporation apparatus 100 will be described with reference to the drawings.

Figure 4 is a flow chart showing a control method of the centrifugal thin film evaporation apparatus according to an embodiment of the present invention. As shown in Figure 4, the control method of the centrifugal thin film evaporator 100 is as follows.

First, at the start of operation by the controller, the signals of the upper position sensor 14a and the lower position sensor 14b are sensed to check the amount of fluid stored in the lower part of the housing 10, and if the lower position sensor 14b When the signal is detected, the solenoid valve (V1) provided in the transfer pipe 11 is opened, the solenoid valve (V2) provided in the circulation pipe 70 is closed, provided in the bypass pipe (71) The solenoid valve V3 is opened, the fluid is transferred from the outside to the housing 10 in a vacuum state through the transfer pipe 11 (S100), and the fluid discharged by the operation of the circulation pump 32. Is reflowed into the bottom of the housing 10 and stored in the bottom of the housing 10.

In this case, the fluid transferred to the housing 10 falls on the induction part 40, and the induction part 40 transfers the fluid downward along the axis 31 to flow into the upper surface of the disc 51 of the evaporation part 50. (S200)

Here, the disk 51 is rotated by the shaft 31 to partially transfer the fluid introduced into the upper surface of the disk 51 to the outer periphery of the disk 51 by centrifugal force, and part of the fluid transfer hole 53. It is conveyed to the rotating disc 51 provided at the bottom through) and this process takes place continuously. In the process, the primary thin film of the fluid is formed on the upper surface of the disk 51, so that the contact area with heat is large, so that evaporation is easily performed even at low temperature (S300), and some of the fluids that cannot be evaporated are the disk 51 At the outer periphery of), a fluid thin film 55 is formed at the inner periphery of the blade 52 and the housing 10, whereby the fluid evaporates very smoothly once again. S400)

At this time, the heat source to evaporate the fluid is transmitted through the heating unit 20 is installed on the outer periphery of the housing 10, the heating medium 20 is always circulated in the heating unit 20 or the heater is built.

Evaporation takes place while passing through the plurality of evaporator 50 in the above manner, the fluid that is not evaporated is stored in the lower end of the housing 10, the stored fluid is heated by the preheater (60) (S500).

At this time, the preheating part 60 is operated only when the fluid filled in the lower end of the housing 10 is higher than the lower position sensor 14b installed at the lower end of the housing 10.

Along with the evaporation process, the fluid continuously introduced through the transfer pipe 11 is stored in the lower portion of the housing 10 after evaporation.

Here, when a signal from the upper position sensor 14a is sensed while the fluid is being stored in the lower portion of the housing 10, the solenoid valve V1 provided in the transfer pipe 11 is closed and the bypass pipe ( The solenoid valve V3 provided at 71 is also closed, and the solenoid valve V2 provided at the circulation pipe 70 is opened to stop the inflow of fluid from the outside into the housing 10, and the circulation pump ( The fluid discharged by 32 is transferred to the upper portion of the housing 10 through the circulation pipe 70 and the circulation of the fluid flowing into the induction pipe 40 is repeated, resulting in continuous evaporation. (S600)

As the fluid inside the housing 10 circulates and evaporates, the amount of fluid stored in the lower portion of the housing gradually decreases, and when the upper surface of the fluid reaches the position of the lower position sensor 14b, the lower position sensor The solenoid valve V2 provided in the circulation pipe 70 is closed by the signal of 14b, the solenoid valve V3 provided in the bypass pipe 71 is opened, and the transfer pipe 11 is closed. The solenoid valve (V1) provided in the opening is also opened to the external fluid flows into the housing 10 (S700) and the fluid discharged to the circulation pump 32 at this time through the bypass pipe 71 Flows back to the bottom of (10).

If, when the start of the operation detects a signal of the upper position sensor 14a provided in the lower portion of the housing 10,

The solenoid valve V1 provided in the transfer pipe 11 is closed, the solenoid valve V2 provided in the circulation pipe 70 is opened, and the solenoid valve V3 provided in the bypass pipe 71 is opened. Is closed, the fluid is introduced into the upper portion of the housing 10 through the circulation pipe 70, and then the same as the method described above is a continuous evaporation process is carried out.

As the above processes are continuously repeated, the operation of the evaporator 100 is not stopped in the continuous evaporation process, and the inflow and evaporation of the fluid occur continuously at the same time.

1 is a cross-sectional view showing a centrifugal thin film evaporation apparatus according to an embodiment of the present invention,

2 is a perspective view showing an evaporation unit according to an embodiment of the present invention;

3 is an enlarged view illustrating a portion A of FIG. 1;

Figure 4 is a flow chart showing a control method of the centrifugal thin film evaporation apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10 housing 11 transfer pipe

12: sludge outlet 13: steam outlet

14a: upper position sensor 14b: lower position sensor

20: heating portion 21: inlet

22: outlet 30: motor

31 shaft 32 pump

33: inlet pipe 34: discharge pipe

40: induction part 50: evaporation part

51: 52: blade

53 fluid transfer hole 54 steam transfer hole

55 thin film 60 preheating part

61: heater 70: circulation tube

71: bypass pipe 72: flow control valve

100: centrifugal thin film evaporator

Claims (13)

The inside of the transfer pipe 11 for transferring the external fluid to the inside in a vacuum state is formed through the upper side to the inside, and the gas converted by evaporating the fluid introduced into the interior through the transfer pipe 11 A housing 10 having a steam outlet 13 formed at an upper side thereof so that the gas is discharged to the outside; A heating unit 20 provided on an outer circumferential surface of the housing 10 to heat the inner circumferential surface and the inside of the housing 10; The motor 30 is provided on the upper surface of the housing 10 and the shaft 31 is connected to the motor 30 and vertically penetrates the inside of the housing 10 and rotated by the motor 30. A drive unit; An induction part 40 provided at an upper side of the shaft 31 and formed in a funnel shape in cross section so that the fluid introduced through the transfer pipe 11 is guided downward along the shaft 31; A plurality of discs 51 are installed on the outer circumferential surface of the shaft 31 in the longitudinal direction and concentric with the housing 10, and the fluid transferred along the shaft 31 through the induction part 40 is the shaft ( It is supplied to the upper surface of the disk 51 located on the uppermost side of the plurality of disks 51 installed in the 31, the fluid is transferred to the outer peripheral surface of the disk 51 by the centrifugal force during the rotation of the disk 51 A thin film of fluid is formed on the upper surface of 51) and the heat transfer area between the fluid and the heat per unit volume is increased to cause the first evaporation. After the first evaporation, the residual fluid is the outer peripheral surface of the disc 51 by centrifugal force. One end of the plurality of blades 52 which are transported to the space between the inner peripheral surface of the housing 10 and vertically provided at the lower surface of the disc 51 and rotate in accordance with the rotation of the disc 51 when flowing along the space. Between the surface and the inner circumferential surface of the housing 10 The thin film is formed on the second evaporation the evaporation unit 50 and takes place; A preheater 60 formed through the lower side of the housing 10 to transfer external heat to the inside of the housing 10 through the heater 61 to heat the stored fluid; Centrifugal thin film evaporator, characterized in that comprising a. The method of claim 1, The heating unit 20 is provided with an inlet 21 at the lower outer periphery so that the heat medium oil or heating air flows from the outside, and the heat medium introduced through the inlet 21 exchanges heat with the inside of the housing 10. Afterwards, the outlet 22 is formed on the outer periphery of the upper end of the heating unit 20 so as to be discharged to the outside again centrifugal thin film evaporator. The method of claim 1, The housing 10 is provided with an upper position sensor 14a and a lower position sensor 14b, respectively, to measure the storage amount of the fluid introduced therein according to the height difference, and discharge the sludge left at the lower end by evaporation of the fluid. Sludge outlet 12 is further formed on the surface, centrifugal thin film evaporator, characterized in that the upper surface is formed to be inclined so that the steam is discharged smoothly through the steam outlet (13). The method of claim 3, wherein The lower position sensor (14b) is centrifugal thin film evaporator, characterized in that installed in a position higher than the preheating unit 60 is installed through the lower end of the housing (10). The method of claim 1, Pump 32 is connected to the end of the shaft 31 is driven by the rotation of the shaft 31, the lower surface of the pump 32 to the fluid stored in the housing 10 into the pump 32 Attracting inlet pipe 33 is installed vertically, one side of the pump 32 is the fluid introduced into the interior through the inlet pipe 33 is transferred to the transfer pipe 11 by the drive of the pump 32. Centrifugal thin film evaporator, characterized in that the discharge pipe 34 is installed so as to. The method of claim 5, Centrifugal thin film evaporator, characterized in that the circulation pipe (70) is further formed between the transfer pipe (11) and the discharge pipe (34) so that the fluid is transferred to the transfer pipe (11) by the pump (32). The method of claim 6, Solenoid valves (V1, V2) are respectively installed in the transfer pipe (11) and the circulation pipe (70) to open and close the flow of fluid, and the flow control valve to adjust the amount of fluid flowing therein in the circulation pipe (70) Centrifugal thin film evaporator, characterized in that 72 is further installed. The method of claim 6, The bypass pipe 71 is installed at a portion where the discharge pipe 34 and the circulation pipe 70 communicate with each other, and an end of the bypass pipe 71 communicates with a lower end of the housing 10 to transfer the pipe 11. Centrifugal thin film evaporator, characterized in that for transferring a portion of the fluid delivered to the housing (10), the bypass tube (71) is further provided with a solenoid valve (V3) for opening and closing the tube. The method of claim 1, The disc 51 of the evaporator 50 is inclined toward the outer circumferential surface to facilitate evaporation when the fluid is transferred to the outer circumferential surface by centrifugal force, and the one end surface so that the fluid provided in the disc 51 falls immediately below A plurality of fluid transfer holes 53 are formed in the housing 10, and a plurality of vapor transfer holes 54 are radially formed at one end surface of the housing 10 so that the vapor evaporated from the fluid is transferred upward. Centrifugal Thin Film Evaporator. The method of claim 1, The blade 52 is installed on the lower surface of the disk 51 so that the outer peripheral surface and one side of the disk 51 is in the same line, and between the blade 52 and the inner circumference of the housing 10 is a forced thin film ( 55) is formed so that the evaporation of the fluid is easily formed centrifugal thin film evaporator. In the control method of the centrifugal thin film evaporator 100, The inside of the housing 10 is maintained in a vacuum state by a vacuum means, and the solenoid valve V1 provided in the conveying pipe 11 is opened to draw fluid from the outside into the inside of the housing 10 by the pressure difference of the vacuum. Inflow step (S100); Dropping the introduced fluid into the induction part 40 to guide the fluid to the disc 51 of the evaporation part 50 through the induction part 40 (S200); The disk 51 is rotated by the shaft 31, the fluid is transferred to the outer peripheral surface of the disk 51 by the centrifugal force on the upper surface of the disk 51 to form a primary thin film and the fluid is evaporated ( S300); The second step of evaporating the fluid that is not evaporated from the disk 51 to the outer peripheral surface of the disk 51 between the blade 52 and the inner peripheral surface of the housing 10 is formed and evaporated (S400); Filling the lower end of the housing with the fluid not evaporated through the evaporator 50 formed in multiple stages on the shaft 31, and heating the filled fluid through the preheater 60 (S500); When the fluid filled in the lower end of the housing 10 is filled up to the upper position sensor 14a provided in the lower portion of the housing 10, the solenoid valve V1 is closed and the solenoid valve V2 is opened to open the pump 32 Step (S600) is circulated to the upper and lower portions of the housing 10 is conveyed back to the transfer pipe 11 through the flow control valve 72); Continuous evaporation occurs inside the housing 10 so that the amount of fluid present in the housing 10 decreases so that the fluid filled in the lower end of the housing 10 is provided in the lower position sensor ( When reaching 14b), the solenoid valve V2 is closed again, the solenoid valve V1 is opened, and fluid is introduced into the housing 10 from the outside by a vacuum, and the inflow and evaporation of the fluid are continuously performed. Happening to step (S700); Control method of the centrifugal thin film evaporation apparatus comprising a. The method of claim 10, In the step (S500) of evaporating the fluid through the preheater 60, Control method of the centrifugal thin film evaporator, characterized in that the preheating unit (60) is activated when the fluid filled in the housing (10) reaches the position of the lower position sensor (14b) installed at the bottom of the housing (10). The method of claim 10, In the step (S700) where the inflow and evaporation of the fluid occurs continuously, When the fluid reaches the lower position sensor 14b provided in the lower portion of the housing 10, the solenoid valve V2 provided in the circulation pipe 70 is closed by the signal of the lower position sensor 14b, The solenoid valve V3 provided in the bypass pipe 71 is opened, and the solenoid valve V1 provided in the transfer pipe 11 is also opened so that external fluid flows into the housing 10. , At the same time, the fluid discharged to the circulation pump 32 is re-introduced back to the lower portion of the housing (10) through the bypass pipe (71).

Images