阅读说明：本技术 丙烯汽化器 (Propylene vaporizer ) 是由 加藤裕子 冈山智彦 冈野秀一 矢岛贵浩 越智贵志 平濑刚 千崎刚史 加藤拓司 岸本克 于 2019-09-10 设计创作，主要内容包括：本发明的课题在于防止原料液体的空化。在原料液体以被吹到汽化板(8)的方式流动的原料液体导入路(6),配置有棒状的电阻器(7),使原料液体导入路(6)相对于原料液体的电导率下降。由于液体质量流量控制器的出口侧的压力上升,与液体质量流量控制器的入口侧的压力的压力差变小,因而能够防止空化的发生。能够使电阻器(7)以多个构成。(The invention aims to prevent cavitation of a raw material liquid. A rod-shaped resistor (7) is disposed in a raw material liquid introduction path (6) through which a raw material liquid flows so as to be blown onto a vaporization plate (8), and the conductivity of the raw material liquid introduction path (6) with respect to the raw material liquid is reduced. The pressure on the outlet side of the liquid mass flow controller rises and the pressure difference from the pressure on the inlet side of the liquid mass flow controller becomes small, so that occurrence of cavitation can be prevented. The resistor (7) can be formed in a plurality of numbers.)

1. A propylene vaporizer having:

a raw material liquid introduction path through which a raw material liquid of the propylene resin film, the flow of which is controlled by a liquid mass flow controller, flows;

a discharge port through which the raw material liquid flowing through the raw material liquid introduction path reaches;

a carrier gas introduction path for supplying a carrier gas to the discharge port;

a closed container having an internal space in which the trace amount of droplets of the raw material liquid and the carrier gas are ejected from the ejection port;

a vaporization plate disposed in the internal space, the vaporization plate being in contact with the minute amount of droplets of the raw material liquid;

a heating device that heats the vaporization plate; and

a raw material gas supply pipe through which a raw material gas as a gas of the raw material liquid generated by bringing the micro droplets into contact with the vaporization plate heated by the heating device flows,

when a rod-shaped resistor is disposed in the raw material liquid introduction passage, the raw material liquid flows into a gap between the resistor and a wall surface of the raw material liquid introduction passage, and thereby the conductivity of the raw material liquid introduction passage with respect to the raw material liquid is reduced.

2. The propylene vaporizer of claim 1, having:

a raw material liquid introduction pipe provided in the closed container; and

a nozzle device provided on a wall surface of the closed casing on the side of the internal space,

a first liquid introduction hole provided in the raw material liquid introduction pipe, a second liquid introduction hole provided in a ceiling of the closed container, and a third liquid introduction hole provided in the nozzle device are communicated with each other to form the raw material liquid introduction path,

the resistor is disposed inside any one or more of the first to third liquid introduction holes.

3. The propylene vaporizer of claim 2, wherein the resistor is divided into two or more.

4. The propylene vaporizer of claim 2, wherein the rod-shaped resistor has an outer diameter smaller than an inner diameter of the raw material liquid introduction passage.

5. The propylene vaporizer according to claim 4, wherein the resistor is disposed on a support portion provided inside the raw material liquid introduction passage.

Technical Field

The present invention relates to a technique for vaporizing a propylene resin raw material, and more particularly to a technique for stabilizing a gas generation rate of a propylene resin raw material.

Background

As an element containing a compound having a property that is easily deteriorated by moisture, oxygen, or the like, for example, an organic EL (Electro Luminescence) element or the like is known. In such an element, an attempt is made to suppress the intrusion of moisture or the like into the element by forming a laminated structure of a layer containing the compound and a protective layer covering the layer. For example, patent document 1 listed below describes a light-emitting element having a protective layer formed of a laminated film of an inorganic film and an organic film on an upper electrode layer.

In the case of forming an acrylic resin film, a raw material liquid of an acrylic resin is vaporized by an acrylic vaporizer to generate a raw material gas, the raw material gas is supplied to the surface of an object to be film-formed and adhered to the surface, and the acrylic resin raw material is polymerized by heating to form an acrylic resin film.

In order to stabilize the film formation rate of the propylene resin film, it is necessary to stabilize the supply rate of the raw material gas, and therefore, a liquid mass flow controller is provided between the propylene vaporizer and the raw material tank, and the raw material liquid whose flow rate is controlled by the liquid Mass Flow Controller (MFC) is supplied to the propylene vaporizer.

However, the amount of the propylene resin raw material supplied from the liquid mass flow controller may vary instantaneously, which may cause a problem in the case of short-time film formation or the like.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2013 and 73880.

Disclosure of Invention

Problems to be solved by the invention

When observing the propylene resin raw material of the liquid supplied from the liquid mass flow controller to the propylene vaporizer, it is understood that cavitation (cavitation) occurs in the propylene resin raw material due to a pressure difference, and it is confirmed that the cause of instantaneous fluctuation in the amount of the propylene resin raw material supplied from the liquid mass flow controller is cavitation.

In the cavitation, it is considered that a sparingly soluble gas is used as the pressing gas because it is considered to be one cause that the pressing gas used for sending the raw material liquid from the raw material tank is dissolved in the raw material liquid.

It is also conceivable to provide a vacuum degasser between the liquid mass flow controller and the raw material tank to remove gas dissolved in the raw material liquid.

However, these measures are expensive, and the labor for management is also increased, which is not preferable.

The present invention addresses the problem of providing an inexpensive and reliable technique for preventing cavitation from occurring in a liquid propylene resin material supplied from a liquid mass flow controller.

Means for solving the problems

In order to solve the above problems, the present invention is a propylene vaporizer including: a raw material liquid introduction path through which a raw material liquid of the propylene resin film, the flow of which is controlled by the liquid mass flow controller, flows; a discharge port through which the raw material liquid flowing through the raw material liquid introduction path reaches; a carrier gas introduction path for supplying a carrier gas to the discharge port; a closed container having an internal space in which the minute droplets of the raw material liquid (the raw material liquid in the form of small droplets) and the carrier gas are ejected from the ejection port; a vaporization plate disposed in the internal space, the vaporization plate being in contact with the minute amount of droplets of the raw material liquid; a heating device for heating the vaporization plate; and a raw material gas supply pipe through which a raw material gas as a gas of the raw material liquid generated by bringing the minute droplets into contact with the vaporization plate heated by the heating device flows, wherein a rod-shaped resistor is disposed in the raw material liquid introduction passage, and the raw material liquid is caused to flow into a gap between the resistor and a wall surface of the raw material liquid introduction passage, whereby the electric conductivity of the raw material liquid introduction passage with respect to the raw material liquid is decreased.

The present invention is a propylene vaporizer including a raw material liquid introduction pipe provided in the closed vessel and a nozzle device provided on a wall surface of the closed vessel on the side of the internal space, wherein a first liquid introduction hole provided in the raw material liquid introduction pipe, a second liquid introduction hole provided in a ceiling of the closed vessel, and a third liquid introduction hole provided in the nozzle device communicate with each other to form the raw material liquid introduction path, and the resistor is disposed in one or more of the first to third liquid introduction holes.

In addition, the present invention is the propylene vaporizer in which the resistor is divided into two or more parts.

Further, the present invention is a propylene vaporizer in which the outer diameter of the rod-shaped resistor is smaller than the inner diameter of the raw material liquid introduction path.

In the present invention, the resistor is disposed on the propylene vaporizer on the support portion provided in the raw material liquid introduction path.

ADVANTAGEOUS EFFECTS OF INVENTION

Since the occurrence of cavitation can be prevented, the generation rate of the raw material gas of the propylene resin film can be stabilized.

Drawings

FIG. 1 is a block diagram for explaining an apparatus for producing a propylene resin film using a propylene vaporizer of the present invention;

FIG. 2 is a propylene vaporizer of the present invention.

Detailed Description

Fig. 1 is a block diagram for explaining an apparatus 10 for producing an acryl film for forming an acryl film, and in the present invention, a raw material liquid which is a liquid monomer is used as a raw material for forming an acryl film on a surface of a processing object, and if polymerized, a high molecular acryl resin is obtained.

The raw material liquid is stored in the raw material tank 52.

First, if an outline of the operation of the propylene resin film production apparatus 10 is described, the raw material tank 52 is connected to the propylene vaporizer 2 via the liquid mass flow controller 53, and if the raw material liquid stored in the raw material tank 52 is supplied to the propylene vaporizer 2 in a state of being flow-controlled by the liquid mass flow controller 53, the liquid raw material liquid is vaporized inside the propylene vaporizer 2, and a raw material gas that is a gas of a raw material of the propylene resin is generated.

An object to be film-formed is disposed inside the film forming apparatus 56, and the inside of the film forming apparatus 56 is vacuum-exhausted by the vacuum exhaust apparatus 57.

The raw material gas generated in the propylene vaporizer 2 is supplied to the film forming apparatus 56, adheres to the object to be film-formed, and is polymerized by a curing means such as heating of the object to be film-formed or irradiation of ultraviolet rays to the object to be film-formed, thereby forming a propylene resin film on the surface of the object to be film-formed.

Next, referring to fig. 2, the operation of the propylene vaporizer 2 will be described, and the propylene vaporizer 2 has a closed container 11, and a raw material liquid introduction pipe 31, a carrier gas transport pipe 34, and a raw material gas supply pipe 37 are disposed outside the closed container 11.

The raw material liquid introduction pipe 31 has a first liquid introduction hole 13 formed therein, and the closed container 11 has a wall formed with a second liquid introduction hole 14, a first gas introduction hole 26, and a raw material gas supply hole 27. The wall of the closed casing 11 includes a ceiling plate and a bottom plate in addition to the side surface wall. Here, the second liquid introduction holes 14 and the first gas introduction holes 26 are provided in the ceiling, and the raw material gas supply holes 27 are provided in the wall of the side surface, but the present invention is not limited thereto.

In the second liquid introduction hole 14, one end of a raw material liquid introduction pipe 31 is fixed to the closed casing 11, and the other end is connected to a connection portion 32 so that the first liquid introduction hole 13 and the second liquid introduction hole 14 communicate with each other. The other end of the raw material liquid delivery pipe 33 (one end of which is connected to the liquid mass flow controller 53) is connected to the connection portion 32, and the normal pipe hole 35 for liquid inside the raw material liquid delivery pipe 33 and the first liquid introduction hole 13 of the raw material liquid introduction pipe 31 communicate in the connection portion 32.

In the connection portion 32, a flange 61 formed at the other end of the raw material liquid introduction pipe 31 and a flange 62 formed at the other end of the raw material liquid transport pipe 33 are in close contact with each other via a metal gasket 64, a threaded cap 63 is attached to the two flanges 61 and 62, and the two flanges 61 and 62 are pressed against each other by the cap 63. Due to this configuration, there is no liquid leakage in the connection portion 32.

Further, the raw material liquid introduction pipe 31 is fixed to the closed casing 11, and when the propylene vaporizer 2 is detached from the raw material liquid transport pipe 33, the cover 63 of the connection portion 32 is loosened, and the raw material liquid introduction pipe 31 is separated from the raw material liquid transport pipe 33 while maintaining the state in which the raw material liquid introduction pipe 31 is fixed to the closed casing 11.

A gas piping hole 38 is formed inside the carrier gas delivery pipe 34, and one end of the carrier gas delivery pipe 34 is fixed to the closed casing 11 so that the gas piping hole 38 and the first gas introduction hole 26 communicate with each other. The other end of the carrier gas delivery pipe 34 is connected to a carrier gas source 54, and the carrier gas supplied from the carrier gas source 54 passes through the gas pipe hole 38 to reach the first gas introduction hole 26.

A raw material gas introduction hole 39 is disposed in the raw material gas supply pipe 37, and one end of the raw material gas supply pipe 37 is fixed to the closed casing 11 so that the raw material gas introduction hole 39 and the raw material gas supply hole 27 communicate with each other. The other end of the raw material gas supply pipe 37 is connected to the film formation device 56 so that the raw material gas passes through the raw material gas introduction hole 39 and is supplied to the film formation device 56.

Next, the transport of the raw material liquid will be described.

When the pressure gas source 51 is connected to the material tank 52 and the pressure gas is supplied from the pressure gas source 51 to the material tank 52, the material liquid stored in the material tank 52 is pressed by the pressure gas, and the material liquid flows through the pipe to reach the liquid mass flow controller 53.

The liquid mass flow controller 53 is configured to control the flow rate of the liquid flowing inside, and the flow rate of the raw material liquid reaching the liquid mass flow controller 53 is controlled inside the liquid mass flow controller 53, and a certain amount of the raw material liquid passes through the liquid mass flow controller 53 per unit time.

The raw material liquid whose flow rate is controlled by the liquid mass flow controller 53 is introduced into the normal pipe hole 35 for liquid in the raw material liquid delivery pipe 33, and the first liquid introduction hole 13 introduced from the normal pipe hole 35 for liquid into the raw material liquid introduction pipe 31 in the connection portion 32 flows through the first liquid introduction hole 13 and moves to the second liquid introduction hole 14.

An internal space 19 is formed inside the closed casing 11, and the nozzle device 12 is fixed to a wall surface of the closed casing 11 on the side of the internal space 19. Here, the nozzle device 12 is provided on a wall surface of a ceiling of the closed casing 11.

A third liquid introduction hole 15 and a second gas introduction hole 24 are formed in the nozzle device 12, the third liquid introduction hole 15 being disposed at a position communicating with the second liquid introduction hole 14, and the second gas introduction hole 24 being disposed at a position communicating with the first gas introduction hole 26.

The carrier gas that reaches the first gas introduction hole 26 moves from the first gas introduction hole 26 into the second gas introduction hole 24.

A discharge port 25 is disposed at the lower end of the second gas introduction hole 24, and the carrier gas flowing through the second gas introduction hole 24 reaches the discharge port 25 and is discharged into the internal space 19.

The position of the discharge port 25 is also the lower end of the third liquid introduction hole 15, and if the raw material liquid flowing through the second liquid introduction hole 14 is transferred to the third liquid introduction hole 15, flows through the third liquid introduction hole 15, and reaches the discharge port 25, the raw material liquid is blown off by the carrier gas reaching the discharge port 25 to become a mist of minute droplets, and is discharged from the discharge port 25 to the internal space 19 of the closed casing 11 together with the carrier gas.

Next, if vaporization of the raw material liquid is described, the vaporization plate 8 is disposed below the internal space 19. The vaporizing plate 8 is provided with a heating device 5 that generates heat by energization, and if the heating device 5 generates heat, the vaporizing plate 8 is heated. The vaporization plate 8 has a reservoir 21 on the front side facing the nozzle device 12 and on the rear side, and excess raw material liquid or the like falls down into the reservoir 21.

The minute droplets of the mist-like raw material liquid ejected from the ejection port 25 into the internal space 19 fly in the direction of the vaporization plate 8 in the internal space 19 and reach the vaporization plate 8. When the minute droplets of the raw material liquid come into contact with the vaporization plate 8, the temperature rises and the droplets are vaporized, and a raw material gas which is a vapor of the raw material liquid is generated.

The first gas introduction hole 26 and the second gas introduction hole 24 function as one carrier gas introduction passage 9 from the carrier gas transport pipe 34 to the ejection hole 25.

The first liquid introduction hole 13 is the uppermost, the third liquid introduction hole 15 is the lowermost, and the first to third liquid introduction holes 13 to 15 are vertically arranged in a straight line, so that when the raw material gas is generated in the propylene vaporizer 2, the raw material liquid moves with the first to third liquid introduction holes 13 to 15 of the propylene vaporizer 2 as passages until the raw material liquid reaches the discharge port 25 from the raw material liquid delivery pipe 33. Therefore, the first to third liquid introduction holes 13 to 15 function as one vertical raw material liquid introduction passage 6 in the propylene vaporizer 2.

A rod-shaped resistor 7 is disposed in the raw material liquid introduction path 6.

Here, the resistor 7 may be constituted by rod-shaped first to third columns disposed in the first liquid introduction hole 13, the second liquid introduction hole 14, and the third liquid introduction hole 15, respectively.

Here, the first to third columns may be constituted by one joined column 16 joining the first column and the second column as shown in fig. 2. In this case, the joining column 16 is disposed over the first liquid introduction hole 13 and the second liquid introduction hole 14, and the third column 17 is disposed in the third liquid introduction hole 15. Separate first to third columns may be arranged in the first to third liquid introduction holes 13 to 15, respectively, and a column arranged in any one or more of the first to third liquid introduction holes 13 to 15 may be used as the resistor 7.

The raw material liquid introduction passage 6 has a circular cross-sectional shape, and the first to third columns have a cylindrical shape and are disposed vertically. The diameters of the bottom surfaces of the first to third columns are smaller than the diameters of the first to third liquid introduction holes 13 to 15 in which the columns are arranged, and therefore, gaps are formed between the side surfaces of the first to third columns and the inner peripheral surfaces of the first to third liquid introduction holes 13 to 15 in which the columns are arranged, respectively.

In short, the circular cross-sectional shape of the resistor 7 is smaller than the circular cross-sectional shape of the raw material liquid introduction passage 6. Therefore, of the first to third liquid introduction holes 13 to 15 constituting the raw material liquid introduction path 6, the inner peripheral surface of the raw material liquid introduction pipe 31 constituting the wall surface of the first liquid introduction hole 13, the member constituting the ceiling of the closed container 11 of the wall surface of the second liquid introduction hole 14, and the member constituting the nozzle device 12 (which constitutes the wall surface of the third liquid introduction hole 15) form a gap with the side surface of the resistor 7 when facing the side surface of the resistor 7, and the raw material liquid moves through the gap.

When the raw material liquid moves in the raw material liquid introduction path 6, if the case where the resistor 7 is not disposed in the raw material liquid introduction path 6 is compared with the case where the resistor 7 is disposed, the case where the resistor 7 is disposed is more difficult to move than the case where it is not disposed, and therefore the electric conductivity of the raw material liquid introduction path 6 with respect to the movement of the raw material liquid is smaller than that when the resistor 7 is not disposed. The cross-sectional shape of the resistor 7 may be smaller than the cross-sectional shape of the raw material liquid introduction passage 6, and the cross-sectional shape of the resistor 7 or the cross-sectional shape of the raw material liquid introduction passage 6 is not limited to a circular shape.

The resistor 7 may be inserted into the raw material liquid introduction passage 6, and the outer diameter of the rod-shaped resistor 7 may be smaller than the inner diameter of the raw material liquid introduction passage 6.

Further, the inner diameter of a part of the raw material liquid introduction passage 6 may be formed smaller than the outer diameter of the resistor 7, and the part having the smaller inner diameter may be used as a support part, and the resistor 7 may be disposed on the support part so that the resistor 7 does not fall down. In the case where a convex portion is provided on the inner peripheral surface of a part of the raw material liquid introduction passage 6, the convex portion may be used as a support portion, and the resistor 7 may be disposed on the support portion so that the resistor 7 does not fall. Reference numeral 22 in fig. 2 denotes a support portion formed of a convex portion, and the convex portion or the support portion 22 having a small inner diameter has the following structure: when the resistor 7 is disposed, the raw material liquid flows between the plurality of support portions 22, thereby ensuring a flow path of the raw material liquid.

By disposing the resistor 7 inside the raw material liquid introduction path 6, the pressure at the connection portion between the liquid mass flow controller 53 and the raw material liquid delivery pipe 33 is made higher when the resistor 7 is disposed than when it is not disposed, and the pressure difference between both ends of the liquid mass flow controller 53 is made smaller. By reducing the pressure difference, the occurrence of cavitation is prevented, and the bubbles do not intrude into the propylene vaporizer 2, so that the generation rate of the raw material gas from the raw material liquid is more stable.

The raw material gas vaporized at a stable generation rate is supplied to the film forming apparatus 56 through the raw material gas supply hole 27 of the raw material gas supply pipe 37, and is adhered to the object to be film-formed and polymerized by a curing means such as heating to form the propylene resin film.

By configuring the resistor 7 to be insertable as in the embodiment of the present invention, the length and diameter of the resistor 7 can be easily changed. That is, by changing the shape of the resistor 7 to a different shape, the pressure at the connection portion between the liquid mass flow controller 53 and the raw material liquid delivery pipe 33 can be easily adjusted. The shape of the resistor 7 includes the length of the resistor 7 in addition to the shape of the cross-sectional area.

Description of the symbols

2 … … propylene vaporizer

5 … … heating device

6 … … raw material liquid introduction path

7 … … resistor

8 … … vaporization plate

9 … … carrier gas leading-in path

12 … … nozzle device

13 … … first liquid leading-in hole

14 … … second liquid lead-in hole

15 … … third liquid lead-in hole

21 … … storage part

22 … … support part

24 … … second gas introduction hole

25 … … spray outlet

26 … … first gas introduction hole

37 … … raw material gas supply pipe

53 … … liquid mass flow controller.