Apparatus for removing residual monomers

Abstract

An apparatus for removing residual monomers is provided. The apparatus for removing residual monomers, according to one aspect of the present invention, comprises: a housing in which a first fluid including, as a component, a material to be removed and a gaseous second fluid that can react with the material to be removed flow, and which has, arranged therein, a first inlet in through which the first fluid flows, a first outlet out of which the first fluid flows, a second inlet in through which the second fluid flows, and a second outlet out of which the second fluid flows; and trays which each include a tray body having an upper surface, on which a flow path enabling the first fluid to flow in one direction is formed, and a lower surface, and through-holes penetrating the tray body in the vertical direction and each having one end positioned on the upper surface and the other end positioned on the lower surface, and which are provided inside the housing, wherein one end of the through-hole is formed to have a diameter of a first length and the other end of the through-hole is formed to have a diameter of a second length, the first length and the second length being different from each other.

Description

Residual monomer removal device

[0001] The present invention relates to a residual monomer removal device, and more specifically, to a residual monomer removal device that prevents the sedimentation of particles during fluid flow by varying the upper and lower diameters of a through hole.

[0002] In polymerization and manufacturing processes, removing impurities mixed in the mixture is crucial for inducing the desired chemical reaction and improving product quality.

[0003] Recently, with the growing interest in the environment and hygiene, various methods are being attempted to remove impurities mixed in fluids in order to separate elements harmful to the environment or hygiene from products.

[0004] FIG. 1 is a cross-sectional view illustrating a conventional residual monomer removal device. FIG. 2 is a cross-sectional view illustrating a tray provided in a conventional residual monomer removal device.

[0005] Referring to Fig. 1, a stripping process using a residual monomer removal device is used as a method to remove volatile substances in solid particles such as PVC particles.

[0006] Referring to FIGS. 1 and 2, a conventional residual monomer removal device can remove impurities by allowing a slurry containing solid particles containing a substance to be removed to flow along a flow path within a tray, and by allowing gas or vapor to come into contact with the solid particles through a through hole formed in the tray to remove volatile substances within the solid particles.

[0007] Conventional residual monomer removal devices including trays of this structure had a problem in that when a slurry containing solid particles flowed along the flow path, gas or vapor could not come into smooth contact with the solid particles due to the narrow inlet of the through hole. Consequently, there were cases where production efficiency decreased and the quality of the produced material deteriorated.

[0008] In addition, as gas or steam did not flow smoothly through the through holes, the flow of the slurry became stagnant, and solid particles contained in the slurry settled. As a result, there were cases where the settled solid particles blocked the through holes, and the flow of gas or steam worsened.

[0009] In addition, conventional residual monomer removal devices were equipped with a dike that crossed the flow direction of the slurry, but there was also a problem where a dead zone formed near the dike where solid particles settled as the dike blocked the flow of the slurry.

[0010] The present invention is intended to solve the above-mentioned problems, and the objective of the present invention is to provide a residual monomer removal device capable of smoothly supplying gas to a fluid flowing on a tray.

[0011] Another objective of the present invention is to provide a residual monomer removal device capable of maintaining a smooth flow of fluid flowing on a tray.

[0012] According to one aspect of the present invention, a residual monomer removal device is provided, comprising: a housing in which a first fluid containing a substance to be removed as a constituent component and a second fluid in a gaseous state capable of reacting with said substance to be removed flow inside, and wherein a first inlet for which the first fluid is introduced, a first outlet for which the first fluid is discharged, a second inlet for which the second fluid is introduced, and a second outlet for which the second fluid is discharged are disposed; a tray body having an upper surface and a lower surface in which a flow path is formed for the first fluid to flow in one direction, and a tray provided inside the housing, the tray body having a through hole that penetrates the tray body in an up-and-down direction, with one end located on the upper surface and the other end located on the lower surface; wherein one end of the through hole is formed to have a diameter equal to a first length and the other end of the through hole is formed to have a diameter equal to a second length, and the first length and the second length are formed to be different lengths.

[0013] At this time, the tray body is formed such that, on a cross-section in which the tray body is cut in a plane including the flow direction of the first fluid and the up-down direction, the rear portion of the through hole forms a first angle with respect to the lower surface of the tray body and the flow direction of the first fluid, and the front portion of the through hole forms a second angle that is not larger than the first angle with respect to the lower surface of the tray body and the flow direction of the first fluid, wherein the first angle may be formed as an obtuse angle.

[0014] At this time, the second angle may be formed as an obtuse angle.

[0015] At this time, the second angle can be formed with the same size as the first angle.

[0016] At this time, the first length may be formed to a length between 0.1 and 0.5 times the second length.

[0017] At this time, the second angle may be formed as an angle of 90 degrees or less.

[0018] At this time, a dike that blocks the flow direction of the first fluid may be disposed in the tray body.

[0019] At this time, the above dike may be formed in the shape of a wall perpendicular to the tray body.

[0020] At this time, the above dike is positioned at a location on the upper surface of the tray body at a predetermined first distance from one end of the through hole, and the first distance, the height of the dike, and the second angle may satisfy the following (Equation 1).

[0021] (Equation 1)

[0022] arctan(H / L1) ≤ D2 ± 10°

[0023] (H: Height of the dike, L1: 1st distance, D2: 2nd angle)

[0024] A residual monomer removal device, wherein the through hole is formed by penetrating the tray body with a penetrating member, and the penetrating member is formed such that the circumference of the portion penetrating the tray body decreases as it approaches the end portion.

[0025] At this time, the portion of the penetrating member penetrating the tray body may be formed in a conical shape.

[0026] At this time, multiple trays may be provided along the vertical direction inside the housing.

[0027] At this time, the plurality of the above trays may be arranged in different directions such that the flow direction of the first fluid differs between adjacent trays.

[0028] According to the above configuration, a residual monomer removal device according to one aspect of the present invention can facilitate the supply of gas through the through hole by forming the lower diameter of the through hole formed in the tray larger than the upper diameter.

[0029] A residual monomer removal device according to another aspect of the present invention can adjust the angle at which a through hole is formed in the tray to facilitate the flow of gas passing through the through hole and the flow of fluid flowing on the tray.

[0030] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

[0031] FIG. 1 is a cross-sectional view illustrating a conventional residual monomer removal device.

[0032] FIG. 2 is a cross-sectional view illustrating a tray provided in a conventional residual monomer removal device.

[0033] FIG. 3 is a cross-sectional view illustrating a tray provided in a residual monomer removal device according to one embodiment of the present invention.

[0034] FIG. 4 is a cross-sectional view illustrating a tray provided in a residual monomer removal device according to another embodiment of the present invention.

[0035] FIG. 5 is a cross-sectional view illustrating a dike structure provided in the tray of a conventional residual monomer removal device.

[0036] FIG. 6 is a cross-sectional view illustrating a dike structure provided in a tray of a residual monomer removal device according to one embodiment of the present invention.

[0037] FIG. 7 is a cross-sectional view illustrating the formation of a through hole in a tray of a residual monomer removal device according to one embodiment of the present invention.

[0038] FIG. 8 is a cross-sectional view illustrating the formation of a through hole in a tray of a residual monomer removal device according to another embodiment of the present invention.

[0039] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used throughout the specification for identical or similar components.

[0040] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.

[0041] In this specification, terms such as “comprising” or “having” are intended to describe the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0042] Thickness or size has been exaggerated in the drawings to clearly express the characteristics of the configuration, and the thickness or size of the configuration shown in the drawings is not necessarily the same as the actual value.

[0043] In the following description, descriptions of some components may be omitted to clarify the features of the present invention.

[0044] A residual monomer removal device according to one embodiment of the present invention is designed to remove a substance to be removed, i.e., a residual monomer, within a first fluid (30) such as a polymer slurry by supplying a second fluid (40) composed of gas. Specific examples may include a VCM stripper for removing volatile substances including vinyl chloride monomer (VCM), but are not limited thereto.

[0045] In the present invention, the first fluid (30) comprises a form in which residual solvent and distillable monomer exist within a polymer powder obtained from suspension polymerization or emulsion polymerization, for example, it may refer to a suspension polymer (PVC slurry) containing distillable VCM within it after suspension polymerization of polyvinyl chloride (PVC). Although PVC is used as an example for suspension polymerization or emulsion polymerization, it is not limited thereto.

[0046] In addition, the second fluid (40) in the present invention is for vaporizing residual monomer and residual solvent, etc., and may be gas or steam, specifically water vapor.

[0047] The residual monomer removal device of the present invention includes a housing (10) and a tray (20).

[0048] A housing (10) of a residual monomer removal device according to one embodiment of the present invention may be configured with a first inlet (12) into which a first fluid (30) is introduced, a first outlet (16) into which the first fluid (30) is discharged, a second inlet (14) into which a second fluid (40) is introduced, and a second outlet (16) into which the second fluid (40) is discharged.

[0049] At this time, the first inlet (12) may be positioned at the top of the housing (10), and the first outlet (16) may be positioned at the bottom of the housing (10).

[0050] Accordingly, the first fluid (30) flowing within the housing (10) can flow from the top to the bottom of the housing (10) in total.

[0051] Additionally, the second inlet (14) may be positioned at the bottom of the housing (10), and the second outlet (18) may be positioned at the top of the housing (10).

[0052] Accordingly, the second fluid (40) flowing within the housing (10) can flow from the bottom to the top of the housing (10) in total.

[0053] At this time, the first fluid (30) can flow on the tray (20) provided within the housing (10), and the second fluid (40) can rise by passing through the through hole (21) formed in the tray (20).

[0054] The location and shape of the first inlet (12), the first outlet (16), the second inlet (14), and the second outlet (18) are not necessarily limited to these, and may be arranged or formed differently depending on the flow path configuration and purpose of use.

[0055] The housing (10), the first inlet (12), the first outlet (16), the second inlet (14), the second outlet (18), the gas supply unit, the flow path control unit, and the pump of the residual monomer removal device according to one embodiment of the present invention may be configured in the same way as a conventional residual monomer removal device; therefore, for the sake of clarity of the invention, a more detailed description of such configuration has been omitted in this specification.

[0056] FIG. 3 is a cross-sectional view illustrating a tray provided in a residual monomer removal device according to one embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a tray provided in a residual monomer removal device according to another embodiment of the present invention.

[0057] A tray (20) of a residual monomer removal device according to one embodiment of the present invention may include a tray body (22) having an upper surface and a lower surface in which a flow path is formed so that a first fluid (30) can flow in one direction, and a through hole penetrating the tray body (22) in an upward and downward direction, with the upper end located on the upper surface of the tray body (22) and the lower end located on the lower surface of the tray body (22).

[0058] Referring to FIGS. 3 and 4, the upper end of the through hole (21) may be formed to have a diameter of a first length (23), and the lower end of the through hole (21) may be formed to have a diameter of a second length (24).

[0059] At this time, as illustrated, the first length (23) and the second length (24) may be formed with different lengths. Accordingly, the through hole (21) of the residual monomer removal device according to one embodiment of the present invention may be formed such that the upper diameter and the lower diameter have different lengths.

[0060] For example, the first length (23) may have a value of 0.5 mm or more and 10 mm or less, and the second length (24) may have a value of 5 mm or more and 20 mm or less.

[0061] Additionally, the first length (23) may be formed to a length between 0.1 and 0.5 times the second length (24).

[0062] As an example, the through hole (21) of the residual monomer removal device according to one embodiment of the present invention may be formed with a first length (23) of 1.2 mm and a second length (24) of 8 mm.

[0063] If the first length (23) is too small, it may be difficult for the second fluid (40) to pass through the through hole (21), and if the first length (23) is too large, some of the first fluid (30) may be lost through the through hole (21) as shown in FIG. 2.

[0064] Meanwhile, the upper or lower end of the through hole (21) may be formed to have a circular cross-section, and is not limited to being formed in an elliptical or other closed curve shape.

[0065] If the shape of the upper or lower end of the through hole (21) is formed as an ellipse, the first length (23) and the second length (24) may be the length of the major axis of the upper end of the through hole (21) and the length of the major axis of the lower end, respectively.

[0066] Meanwhile, in the present specification, FIGS. 3 and 4 and subsequent drawings are cross-sections of the tray (20) including the flow direction of the first fluid (30) and the up and down direction, and the shape of the through hole (21) can be described by the size of the first angle (25) and the second angle (26) included in the cross-section.

[0067] At this time, the first angle (25) and the second angle (26) may refer to the angle formed by the lower surface of the tray body (22) and the side of the through hole (21) in the illustrated cross-section.

[0068] At this time, the positional relationship between the first angle (25) and the second angle (26) can be defined according to the flow direction of the first fluid (30).

[0069] More specifically, the first angle (25) may be located further back from the second angle (26) with respect to the flow direction of the first fluid (30).

[0070] For example, in FIGS. 3 and 4, when the flow direction of the first fluid (30) is directed to the right, the first angle (25) may be shown as the angle formed between the left end of the through hole (21) and the lower surface of the tray body (22) in cross-section, and the second angle (26) may be shown as the angle formed between the right end of the through hole (21) and the lower surface of the tray body (22) in cross-section.

[0071] Accordingly, the first angle (25) is not necessarily limited to being formed to the left of the second angle (26), and if the flow direction of the first fluid (30) is toward the left, the first angle (25) may be located to the right of the second angle (26).

[0072] At this time, the first angle (25) can be formed as an obtuse angle.

[0073] Accordingly, the second fluid (40) passing through the through hole (21) from the rear lower side of the through hole (21) along the flow direction of the first fluid (30) can pass through the upper side of the through hole (21) forward along the flow direction of the first fluid (30) to assist the flow of the first fluid (30).

[0074] Accordingly, the flow of the first fluid (30) can be enhanced by the flow of the second fluid (40), and as the second fluid (40) rises within the through hole (21) and passes through the through hole (21), the settling of solid particles (31) mixed in the first fluid (30) can be prevented.

[0075] At this time, referring to FIG. 3, the second angle (26) can be formed as an angle of 90 degrees or less.

[0076] When the second angle (26) is formed at an angle of 90 degrees or less, the shape of the through hole (21) can be formed in a shape that slopes forward and upward along the flow direction of the first fluid (30) as it goes from the lower side to the upper side.

[0077] Accordingly, the second fluid (40) passing through the through hole (21) can have momentum directed toward the upper front side along the flow direction of the first fluid (30) as it passes through the through hole (21).

[0078] Accordingly, as the second fluid (40) rises within the through hole (21) and passes through the through hole (21), it can assist the flow of the first fluid (30) and prevent the sedimentation of solid particles (31) mixed in the first fluid (30).

[0079] However, the second angle (26) is not necessarily limited to being formed at an angle of 90 degrees or less.

[0080] In the case of a residual monomer removal device according to another embodiment of the present invention illustrated in FIG. 4, the second angle (26) may be formed as an obtuse angle or as an angle of the same size as the first angle (25).

[0081] As shown in FIG. 4, when the second angle (26) is formed as an angle of the same size as the first angle (25), the second fluid (40) can flow upward while passing through the top of the through hole (21).

[0082] At this time, as the second fluid (40) rises, it can prevent the solid particles (31) mixed in the first fluid (30) from settling.

[0083] In addition, as shown in Fig. 4, if the second angle (26) is formed as an angle of the same size as the first angle (25), the second fluid (40) can smoothly flow into the through hole (21) by passing through the bottom of the through hole (21).

[0084] FIG. 5 is a cross-sectional view illustrating a dike structure provided in a tray of a conventional residual monomer removal device. FIG. 6 is a cross-sectional view illustrating a dike structure provided in a tray of a residual monomer removal device according to an embodiment of the present invention.

[0085] Referring to FIG. 5, in the case of a conventional residual monomer removal device, the flow of the first fluid (30) can be blocked by a dike (28) provided on the tray body (22).

[0086] At this time, a portion of the first fluid (30) may flow over the dike (28) due to the flow of the first fluid (30), but a dead zone may be formed at the bottom of the dike (28) where solid particles (31) are stagnated and settled due to the stagnation of the flow of the first fluid (30).

[0087] When such a dead zone occurs, some of the solid particles (31) may not be able to cross the embankment (28) along the first fluid (30) and may accumulate at the bottom of the embankment (28) as stagnant particles (32).

[0088] Such a dike (28) blocks the flow of the first fluid (30) so that the first fluid (30) can form a layer of a predetermined height on the tray (20), but it becomes difficult to achieve the purpose of the residual monomer removal device, which is to remove impurities contained in the solid particles (31) in the first fluid (30).

[0089] Referring to FIG. 6, in order for the first fluid (30) to flow smoothly over the dike (28), the relationship between the first distance (27), which is the distance from the through hole (21) to the dike (28), the height (29) of the dike, and the second angle (26) can be formed to satisfy the following (Equation 1).

[0090] (Equation 1)

[0091] arctan(H / L1) ≤ D2 ± 10°

[0092] (H: Height of the dike, L1: 1st distance, D2: 2nd angle)

[0093] At this time, the dike (28) can be formed in the shape of a vertical wall that blocks the flow direction of the first fluid (30).

[0094] According to (Equation 1), the maximum value of the height (29) of the embankment can be increased as the size of the second angle (26) increases when the first distance (27) is constant. Additionally, the maximum value of the height (29) of the embankment can be increased as the first distance (27) increases when the second angle (26) is constant.

[0095] Additionally, the minimum value of the first distance (27) may become smaller as the size of the second angle (26) increases when the height (29) of the embankment is constant. Also, the minimum value of the first distance (27) may become further as the height (29) of the embankment increases when the size of the second angle (26) is constant.

[0096] Additionally, the minimum value of the second angle (26) can be reduced as the first distance (27) increases when the height (29) of the embankment is constant. Also, the minimum value of the second angle (26) can be increased as the height (29) of the embankment increases when the first distance (27) is constant.

[0097] In this way, when two of the values ​​of the height of the embankment (29), the first distance (27), and the second angle (26) are determined, the remaining value can be set within a range that satisfies (Equation 1).

[0098] Accordingly, it is possible to maintain the height of the first fluid while minimizing the dead zone by taking into account both the flow of the first fluid (30) and the height (29) of the dike (28) blocking the first fluid (30).

[0099] At this time, when the flow rate of the first fluid (30) is high, the height of the layer of the first fluid (30) flowing on the tray (20) can be increased, so the first fluid (30) can easily go over the dike (28).

[0100] In this case, the residual monomer removal device according to one embodiment of the present invention may be formed such that the relationship between the first distance (27), which is the distance from the through hole (21) to the embankment (28), the height (29) of the embankment, and the second angle (26) satisfies the following (Equation 2) so that the first fluid (30) flows smoothly over the embankment (28).

[0101] (Equation 2)

[0102] arctan(H / L1) ≤ D2 - 10°

[0103] (H: Height of the dike, L1: 1st distance, D2: 2nd angle)

[0104] Accordingly, it is also possible to set the height of the embankment (29) lower than the standard according to (Equation 1) under more identical conditions.

[0105] The dike (28) of such a residual monomer removal device is not necessarily formed only according to the criteria in (Equation 1) and (Equation 2).

[0106] For example, depending on the shape of the flow path formed on the tray (20) and the physical properties and flow rate criteria of the first fluid (30), the dike (28) may be formed according to criteria that deviate from the limitations of (Equation 1) and (Equation 2).

[0107] FIG. 7 is a cross-sectional view illustrating the formation of a through hole in a tray of a residual monomer removal device according to one embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating the formation of a through hole in a tray of a residual monomer removal device according to another embodiment of the present invention.

[0108] Conventionally, a vertically oriented cylindrical drill was used to form a through hole (21) provided in the tray (20) of a residual monomer removal device according to one embodiment of the present invention.

[0109] Accordingly, it was difficult to manufacture a through hole (21) in which both the first angle (25) and the second angle (26) are not formed at right angles, such as the through hole (21) of the residual monomer removal device according to one embodiment of the present invention.

[0110] To solve such problems, the through hole (21) of the residual monomer removal device according to one embodiment of the present invention may be formed using a through member (50) in which the portion penetrating the tray body (22) is formed such that the circumference decreases as it approaches the end portion.

[0111] For example, the penetrating member (50) can be formed in a cone shape.

[0112] At this time, the penetrating member (50) may penetrate the tray body (22) in a tilted state with respect to the up and down direction as shown in FIG. 7, or penetrate the tray body (22) along the up and down direction as shown in FIG. 8 to form a penetrating hole (21).

[0113] At this time, the penetrating member (50) may be a drill bit connected to a drill. Additionally, the penetrating member (50) may be formed as a drill bit of an angle capable of forming a desired first angle (25) and a second angle (26) in the tray body (22) when penetrating the tray body (22).

[0114] A plurality of through holes (21) may be formed in the tray body (22) along the flow direction of the first fluid (30). At this time, in order to form a first angle (25) and a second angle (26) adjacent to the plurality of through holes (21) at a constant angle, the through member (50) and the tray (20) may be guided by a separate guide member (not shown) so that the through member (50) can penetrate the tray (20) at a constant angle.

[0115] The penetration member (50) being provided as a drill or drill bit is merely an example and is not necessarily limited thereto.

[0116] A tray (20) having a through hole (21) and a dike (28) of the above structure may be provided in multiple numbers along the vertical direction within the housing (10), like the conventional residual monomer removal device shown in FIG. 1.

[0117] At this time, a plurality of trays (20) may be arranged in different directions within the housing (10) so that the flow direction of the first fluid (30) is different between adjacent trays (20) within the housing (10).

[0118] Accordingly, as the second fluid (40) rises within the housing (10), it can flow out to the upper side of the housing (10) through a plurality of trays (20).

[0119] Although an embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the concept of the present invention.

Claims

A housing in which a first fluid containing a substance to be removed as a component and a second fluid in a gaseous state flow internally, and wherein a first inlet for which the first fluid is introduced, a first outlet for which the first fluid is discharged, a second inlet for which the second fluid is introduced, and a second outlet for which the second fluid is discharged are disposed therein; and A tray body having an upper surface and a lower surface having a flow path formed therein through which the first fluid can flow in one direction, and a tray provided inside the housing, the tray body having a through hole penetrating the tray body in the vertical direction, with one end located on the upper surface and the other end located on the lower surface; wherein A residual monomer removal device wherein one end of the through hole is formed to have a diameter equal to a first length, and the other end of the through hole is formed to have a diameter equal to a second length, and the first length and the second length are formed to have different lengths. In Article 1, On a cross-section obtained by cutting the tray body in a plane including the flow direction of the first fluid and the up-down direction, The rear portion of the through hole is formed to form a first angle with respect to the lower surface of the tray body and the flow direction of the first fluid, and A residual monomer removal device, wherein the front portion of the through hole is formed such that it forms a second angle not larger than the first angle based on the lower surface of the tray body and the flow direction of the first fluid, and the first angle is formed as an obtuse angle. In Article 2, A residual monomer removal device in which the second angle is formed as an obtuse angle. In Article 2, A residual monomer removal device in which the second angle is formed with the same size as the first angle. In Article 1, A residual monomer removal device, wherein the first length is formed to be between 0.1 and 0.5 times the second length. In Article 2, A residual monomer removal device in which the second angle is formed at an angle of 90 degrees or less. In Article 5, A residual monomer removal device in which a dike blocking the flow direction of the first fluid is disposed on the tray body. In Article 7, A residual monomer removal device in which the above dike is formed in a wall shape perpendicular to the above tray body. In Article 7, The above dike is positioned on the upper surface of the tray body at a location separated from one end of the through hole by a predetermined first distance, and A residual monomer removal device in which the above first distance, the height of the above dike, and the above second angle satisfy the following (Equation 1). (Equation 1) arctan(H / L1) ≤ D2 ± 10° (H: Height of the dike, L1: 1st distance, D2: 2nd angle) In Article 1, The above through hole is formed by penetrating the tray body through a penetrating member, A residual monomer removal device in which the above penetrating member is formed such that the portion penetrating the tray body has a circumference that decreases towards the end. In Article 10, The above-mentioned penetrating member is a residual monomer removal device in which the portion penetrating the tray body is formed in a conical shape. In Article 1, A residual monomer removal device in which a plurality of trays are provided along the vertical direction inside the housing. In Article 12, A residual monomer removal device in which a plurality of the above-mentioned trays are arranged in different directions such that the flow direction of the first fluid between adjacent trays is different.

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