JP2020146631A - Mist recovery device and mist recovery method - Google Patents

Mist recovery device and mist recovery method Download PDF

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JP2020146631A
JP2020146631A JP2019046428A JP2019046428A JP2020146631A JP 2020146631 A JP2020146631 A JP 2020146631A JP 2019046428 A JP2019046428 A JP 2019046428A JP 2019046428 A JP2019046428 A JP 2019046428A JP 2020146631 A JP2020146631 A JP 2020146631A
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mist
receiving portion
eaves
discharge pipe
tank
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JP7244065B2 (en
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聡一郎 中山
Soichiro Nakayama
聡一郎 中山
藤原　正和
Masakazu Fujiwara
正和 藤原
達也 小田
Tatsuya Oda
達也 小田
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Pan Pacific Copper Co Ltd
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Pan Pacific Copper Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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    • Y02P10/20—Recycling

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Abstract

To improve recovery efficiency of mist by suppressing contamination of rainwater into a tank.SOLUTION: A mist recovery device 100 includes: a vent pipe 50 connected in one end part to a tank 20 for storing acidic liquid, and discharging downward mist in the tank from the other end part; a receiving part 40 arranged below the other end part of the vent pipe, and recovering mist (acidic liquid) condensed in the vent pipe 50; and a return pipe 41 for returning the acidic liquid recovered by the receiving part 40 to the vicinity of the one end part of the vent pipe. An eaves part 38 having a shape of covering the receiving part from above is provided in the other end part of the vent pipe. The top face of the eaves part is inclined downward from the center side to the outer peripheral side of the receiving part, and the lower face of the eaves part is inclined downward from the outer peripheral side to the center side of the receiving part.SELECTED DRAWING: Figure 1

Description

本発明は、ミスト回収装置及びミストの回収方法に関する。 The present invention relates to a mist collecting device and a method for collecting mist.

銅電解殿物中の銅分を取り除く場合、スラリー状の銅電解殿物を加熱し、空気を吹き込むことで溶解させる。このとき、スラリー状の銅電解殿物は８０℃前後まで加熱される。銅電解殿物は加熱されることにより、銅が溶出した強酸性の液体となる。 When removing the copper content in the copper electrolytic product, the slurry-like copper electrolytic product is heated and melted by blowing air. At this time, the slurry-like copper electrolyzed product is heated to around 80 ° C. When the copper electrolysis product is heated, it becomes a strongly acidic liquid in which copper is eluted.

スラリー状の銅電解殿物を固体と液体に分離するためにフィルタープレスが利用される。この場合、フィルタープレスに投入する液体を保有しておくため、あるいは固体を分離した後の液体を保有するために、タンクが利用される。タンク内の液体は加温されていることから、タンク内にはミストが発生しやすくなっている。 A filter press is used to separate the slurry copper electrolyzed material into solid and liquid. In this case, the tank is used to hold the liquid to be charged into the filter press or to hold the liquid after separating the solid. Since the liquid in the tank is heated, mist is likely to be generated in the tank.

特開２０１１−２０６６９６号公報Japanese Unexamined Patent Publication No. 2011-206696

タンク内で発生したミストをタンクの上側に設けた逆Ｕ字状の排出管を用いてタンク外に放出することがある。この場合、排出管内で凝縮したミスト（酸性液体）がタンクの上側に設けられた床面に落ちると、床材を腐食させる可能性がある。このため、排出管近傍に酸性液体を回収するための受け部を設け、受け部で回収した酸性液体をタンク内に戻すことが考えられる。 The mist generated in the tank may be discharged to the outside of the tank using an inverted U-shaped discharge pipe provided on the upper side of the tank. In this case, if the mist (acidic liquid) condensed in the discharge pipe falls on the floor surface provided on the upper side of the tank, the floor material may be corroded. Therefore, it is conceivable to provide a receiving portion for collecting the acidic liquid near the discharge pipe and return the acidic liquid collected by the receiving portion to the inside of the tank.

しかしながら、受け部を設けた場合、雨天時に受け部を介してタンク内に雨水が入り込む可能性がある。 However, if a receiving portion is provided, rainwater may enter the tank via the receiving portion in rainy weather.

本明細書に記載のミスト回収装置及びミストの回収方法は、上記の課題に鑑みてなされたものであり、タンク内への雨水の混入を抑制し、ミストの回収効率を向上することを目的とする。 The mist recovery device and the mist recovery method described in the present specification have been made in view of the above problems, and have an object of suppressing the mixing of rainwater into the tank and improving the mist recovery efficiency. To do.

本明細書に記載のミスト回収装置は、６０℃以上の酸性液又はアルカリ性液を収容するタンクに一端部が接続され、前記タンク内のミストを他端部から下側に向けて排出する排出管と、前記排出管の前記他端部の下方に配置され、前記排出管の内部で凝縮した前記ミストを回収する受け部と、前記受け部が回収した前記ミストを前記排出管の前記一端部近傍に戻す戻り管と、を備え、前記排出管の前記他端部には、前記受け部を上方から覆う形状を有する庇部が設けられ、前記庇部の上面は、水平又は前記受け部の中心側から外周側に向けて下向きに傾斜しており、前記庇部の下面は、前記受け部の外周側から中心側に向けて下向きに傾斜している。 The mist recovery device described in the present specification is a discharge pipe in which one end is connected to a tank containing an acidic liquid or an alkaline liquid having a temperature of 60 ° C. or higher, and the mist in the tank is discharged downward from the other end. A receiving portion that is arranged below the other end of the discharge pipe and collects the mist condensed inside the discharge pipe, and a receiving portion that collects the mist collected by the receiving portion in the vicinity of the one end portion of the discharge pipe. The other end of the discharge pipe is provided with an eaves having a shape that covers the receiving portion from above, and the upper surface of the eaves is horizontal or the center of the receiving portion. It is inclined downward from the side toward the outer peripheral side, and the lower surface of the eaves portion is inclined downward from the outer peripheral side of the receiving portion toward the center side.

本明細書に記載のミスト回収装置及びミストの回収方法は、タンク内への雨水の混入を抑制し、ミストの回収効率を向上することができるという効果を奏する。 The mist recovery device and the mist recovery method described in the present specification have the effect of suppressing the mixing of rainwater into the tank and improving the mist recovery efficiency.

一実施形態に係るミスト回収装置の構成を概略的に示す図である。It is a figure which shows schematic structure of the mist recovery apparatus which concerns on one Embodiment. 庇部の縦断面図である。It is a vertical sectional view of the eaves part. 庇部の作用について説明するための図である。It is a figure for demonstrating the action of the eaves part. 比較例を示す図である。It is a figure which shows the comparative example. 図５（ａ）、図５（ｂ）は、変形例を示す図（その１）である。5 (a) and 5 (b) are diagrams (No. 1) showing a modified example. 図６（ａ）、図６（ｂ）は、変形例を示す図（その２）である。6 (a) and 6 (b) are diagrams (No. 2) showing a modified example.

以下、一実施形態に係るミスト回収装置について、図１〜図３に基づいて詳細に説明する。 Hereinafter, the mist collecting device according to the embodiment will be described in detail with reference to FIGS. 1 to 3.

図１には、一実施形態に係るミスト回収装置１００の構成が示されている。図１に示すように、ミスト回収装置１００は、床材６０の下方に設けられたタンク２０に接続されている。 FIG. 1 shows the configuration of the mist collecting device 100 according to the embodiment. As shown in FIG. 1, the mist collecting device 100 is connected to a tank 20 provided below the floor material 60.

ここで、タンク２０は、一例として、スラリー状の銅電解殿物を固体と液体に分離するためのフィルタープレスに投入する液体を収容するタンクである。タンク２０内の銅電解殿物は８０℃前後まで加熱されており、銅が溶出して強酸性の液体となっているため、ミストが発生しやすい状態となっている。なお、タンク２０は、外側から見て円柱形状を有し、一例として、底面の直径が３２００ｍｍ、高さが３３００ｍｍとなっている。なお、タンク２０としては、フィルタープレスに投入した後（固体を分離した後）の液体を収容するためのタンクなど、その他の６０℃以上の酸性液体を収容するタンクであってもよい。 Here, as an example, the tank 20 is a tank for accommodating a liquid to be charged into a filter press for separating a slurry-like copper electrolytic product into a solid and a liquid. The copper electrolyzed material in the tank 20 is heated to around 80 ° C., and copper is eluted to form a strongly acidic liquid, so that mist is likely to be generated. The tank 20 has a cylindrical shape when viewed from the outside, and as an example, the bottom surface has a diameter of 3200 mm and a height of 3300 mm. The tank 20 may be a tank for accommodating other acidic liquids having a temperature of 60 ° C. or higher, such as a tank for accommodating the liquid after being charged into the filter press (after separating the solid).

ミスト回収装置１００は、図１に示すように、タンク２０に設けられた配管２２に一端部が接続された逆Ｊ字状の排出管としてのベント管５０と、ベント管５０の他端部近傍（下方）に設けられた受け部４０と、受け部４０とベント管５０の間に設けられ、受け部４０の内部とベント管５０の内部とを連通する戻り管４１と、を備える。受け部４０の上端部の開口は、略円形形状であり、戻り管４１は断面略円形の筒状部材である。受け部４０と戻り管４１は、塩化ビニル等を材料としている。 As shown in FIG. 1, the mist collecting device 100 includes a vent pipe 50 as an inverted J-shaped discharge pipe having one end connected to a pipe 22 provided in the tank 20, and the vicinity of the other end of the vent pipe 50. A receiving portion 40 provided (lower) and a return pipe 41 provided between the receiving portion 40 and the vent pipe 50 and communicating the inside of the receiving portion 40 and the inside of the vent pipe 50 are provided. The opening at the upper end of the receiving portion 40 has a substantially circular shape, and the return pipe 41 is a tubular member having a substantially circular cross section. The receiving portion 40 and the return pipe 41 are made of vinyl chloride or the like.

ベント管５０は、直管パイプ３１、３４、３６と、フランジ３０、３２、３３と、エルボー３５、３７と、庇部３８と、が組み合わされたものである。ベント管５０に含まれる各部材は、断面略円形で、塩化ビニル等を材料としている。タンク２０内で発生したミストは、ベント管５０内を直管パイプ３１内、直管パイプ３４内、エルボー３５内、直管パイプ３６内、エルボー３７内、庇部３８内を順に移動する。そして、ミストは、ベント管５０の内壁と接触するなどして凝縮して、酸性液体となると、受け部４０で回収され、戻り管４１、直管パイプ３１、配管２２を介して、タンク２０内に戻される。 The vent pipe 50 is a combination of straight pipes 31, 34, 36, flanges 30, 32, 33, elbows 35, 37, and eaves 38. Each member included in the vent pipe 50 has a substantially circular cross section and is made of vinyl chloride or the like. The mist generated in the tank 20 moves in the bent pipe 50 in this order in the straight pipe 31, the straight pipe 34, the elbow 35, the straight pipe 36, the elbow 37, and the eaves 38. Then, when the mist is condensed by coming into contact with the inner wall of the vent pipe 50 to become an acidic liquid, it is collected by the receiving portion 40, and is collected in the tank 20 via the return pipe 41, the straight pipe 31, and the pipe 22. Returned to.

庇部３８は、略円盤状の形状を有し、エルボー３７の下端部に設けられた上側傘部３９Ａと、上側傘部３９Ａの下側に設けられた下側傘部３９Ｂと、を有する。図２は、庇部３８の縦断面図である。図２に示すように、上側傘部３９Ａは、縦断面が台形形状となっており、上端部に円形開口８９Ａが形成された傘状の部材である。上側傘部３９Ａの上側の面は、円形開口８９Ａから外周側に向けて下向きに傾斜しており、その傾斜角度（θ１）は水平面に対して１５°〜４５°とされている。また、下側傘部３９Ｂは、上側傘部３９Ａを上下逆にしたような形状を有し、下端部に開口部としての円形開口８９Ｂが形成されている。すなわち、下側傘部３９Ｂの下側の面は、外周側から円形開口８９Ｂに向けて下向きに傾斜しており、その傾斜角度（θ２）は水平面に対して１５°〜４５°とされている。 The eaves 38 has a substantially disk-shaped shape, and has an upper umbrella portion 39A provided at the lower end portion of the elbow 37 and a lower umbrella portion 39B provided below the upper umbrella portion 39A. FIG. 2 is a vertical cross-sectional view of the eaves portion 38. As shown in FIG. 2, the upper umbrella portion 39A is an umbrella-shaped member having a trapezoidal vertical cross section and a circular opening 89A formed at the upper end portion. The upper surface of the upper umbrella portion 39A is inclined downward from the circular opening 89A toward the outer peripheral side, and the inclination angle (θ1) is 15 ° to 45 ° with respect to the horizontal plane. Further, the lower umbrella portion 39B has a shape in which the upper umbrella portion 39A is turned upside down, and a circular opening 89B as an opening is formed at the lower end portion. That is, the lower surface of the lower umbrella portion 39B is inclined downward from the outer peripheral side toward the circular opening 89B, and the inclination angle (θ2) is 15 ° to 45 ° with respect to the horizontal plane. ..

下側傘部３９Ｂが有する円形開口８９Ｂの直径（内径φ２）は、上側傘部３９Ａが有する円形開口８９Ａの直径（内径φ１）よりも小さい。また、円形開口８９Ｂの内径（φ１）は、受け部４０の上端部の開口の内径（図１のφ４）の０．３倍〜０．７倍となっている。また、上側傘部３９Ａの下端部及び下側傘部３９Ｂの上端部（庇部３８のうち最も径が大きい部分）の外径（φ３）は、受け部４０の上端部の開口の内径（図１のφ４）の１．３〜２．０倍程度となっている。 The diameter of the circular opening 89B (inner diameter φ2) of the lower umbrella portion 39B is smaller than the diameter (inner diameter φ1) of the circular opening 89A of the upper umbrella portion 39A. Further, the inner diameter (φ1) of the circular opening 89B is 0.3 to 0.7 times the inner diameter of the opening at the upper end of the receiving portion 40 (φ4 in FIG. 1). Further, the outer diameter (φ3) of the lower end of the upper umbrella portion 39A and the upper end portion of the lower umbrella portion 39B (the portion having the largest diameter of the eaves 38) is the inner diameter (φ3) of the opening of the upper end portion of the receiving portion 40 (FIG. It is about 1.3 to 2.0 times that of φ4) of 1.

図３には、エルボー３７、庇部３８、受け部４０、戻り管４１の断面図が示されている。庇部３８（上側傘部３９Ａ）の円形開口８９Ａには、図３に示すように、エルボー３７の下端部が差し込まれた状態となっている。 FIG. 3 shows a cross-sectional view of the elbow 37, the eaves 38, the receiving portion 40, and the return pipe 41. As shown in FIG. 3, the lower end portion of the elbow 37 is inserted into the circular opening 89A of the eaves portion 38 (upper umbrella portion 39A).

上側傘部３９Ａは、雨天時に、受け部４０に雨水が入り込むのを防止するためのものである。本実施形態においては、庇部３８の外径（φ３）は、受け部４０の上端部の開口の内径（φ４）の１．３〜２．０倍程度であるため、受け部４０への雨水の浸入を効果的に抑制することができる。 The upper umbrella portion 39A is for preventing rainwater from entering the receiving portion 40 in rainy weather. In the present embodiment, the outer diameter (φ3) of the eaves 38 is about 1.3 to 2.0 times the inner diameter (φ4) of the opening at the upper end of the receiving portion 40, so that rainwater to the receiving portion 40 Invasion can be effectively suppressed.

次に、下側傘部３９Ｂの作用について説明する。ベント管５０内（エルボー３７内）でミストが凝縮して酸性液体となると、エルボー３７の内壁を伝わって、下側傘部３９Ｂの内壁面８８上に落下する（図３の矢印Ａ参照）。そして、内壁面８８を伝わることで、酸性液体は円形開口８９Ｂから受け部４０に落ち（矢印Ｂ参照）、戻り管４１、直管パイプ３１、配管２２を介して、タンク２０内に戻る。また、庇部３８の内部で凝縮したミスト（酸性液体）についても、同様に、内壁面８８を流れ、円形開口８９Ｂから受け部４０に落ちる。 Next, the action of the lower umbrella portion 39B will be described. When the mist condenses in the vent pipe 50 (inside the elbow 37) to become an acidic liquid, it travels along the inner wall of the elbow 37 and falls on the inner wall surface 88 of the lower umbrella portion 39B (see arrow A in FIG. 3). Then, by propagating through the inner wall surface 88, the acidic liquid falls from the circular opening 89B to the receiving portion 40 (see arrow B), and returns to the inside of the tank 20 via the return pipe 41, the straight pipe 31, and the pipe 22. Further, the mist (acidic liquid) condensed inside the eaves 38 also flows through the inner wall surface 88 and falls from the circular opening 89B to the receiving portion 40.

一方、ベント管５０内で凝縮しなかったミストは、矢印Ｃに示すように受け部４０に向かって流れるが、受け部４０に溜まったミストは、矢印Ｄに示すように受け部４０と下側傘部３９Ｂの間を上昇し、下側傘部３９Ｂの外壁面８７（庇部３８の下面）で結露して酸性液体となる。この結露した酸性液体は、外壁面８７を伝わることで、受け部４０に落ちるようになっている（矢印Ｅ参照）。このように、本実施形態では、受け部４０に溜まったミストから酸性液体を効率よく回収し、タンク２０内に戻すことができる。なお、矢印Ｄのように受け部４０と下側傘部３９Ｂの間を上昇するミストには、戻り管４１を上昇してきたミストも含まれる。 On the other hand, the mist that has not condensed in the vent pipe 50 flows toward the receiving portion 40 as shown by the arrow C, but the mist accumulated in the receiving portion 40 flows to the receiving portion 40 and the lower side as shown by the arrow D. It rises between the umbrella portions 39B and condenses on the outer wall surface 87 (lower surface of the eaves portion 38) of the lower umbrella portion 39B to become an acidic liquid. The condensed acidic liquid travels on the outer wall surface 87 and falls on the receiving portion 40 (see arrow E). As described above, in the present embodiment, the acidic liquid can be efficiently recovered from the mist accumulated in the receiving portion 40 and returned to the tank 20. The mist that rises between the receiving portion 40 and the lower umbrella portion 39B as shown by the arrow D also includes the mist that has risen from the return pipe 41.

ここで、図４には、比較例として、庇部３８が上側傘部３９Ａのみを有する場合が示されている。この比較例では、本実施形態と同様に、上側傘部３９Ａによって雨水の浸入を防ぐことができる。その一方で、矢印Ｄに示すように受け部４０と下側傘部３９Ｂの間を上昇するミストは、上側傘部３９Ａの内壁面８５に結露する。このように上側傘部３９Ａの内壁面８５に結露したミスト（酸性液体）は、内壁面８５を伝わって、上側傘部３９Ａの外周近傍から下方に落下する（矢印Ｆ参照）。この場合、上側傘部３９Ａから落下した酸性液体が床材６０を腐食させる可能性がある。これに対し、本実施形態では、下側傘部３９Ｂを設けることで、酸性液体の床材６０への落下を抑制することができるため、床材６０の腐食を抑制することができる。 Here, FIG. 4 shows a case where the eaves portion 38 has only the upper umbrella portion 39A as a comparative example. In this comparative example, as in the present embodiment, the upper umbrella portion 39A can prevent rainwater from entering. On the other hand, as shown by the arrow D, the mist rising between the receiving portion 40 and the lower umbrella portion 39B condenses on the inner wall surface 85 of the upper umbrella portion 39A. The mist (acidic liquid) that has condensed on the inner wall surface 85 of the upper umbrella portion 39A is transmitted down the inner wall surface 85 and falls downward from the vicinity of the outer circumference of the upper umbrella portion 39A (see arrow F). In this case, the acidic liquid dropped from the upper umbrella portion 39A may corrode the floor material 60. On the other hand, in the present embodiment, by providing the lower umbrella portion 39B, it is possible to suppress the falling of the acidic liquid onto the floor material 60, so that the corrosion of the floor material 60 can be suppressed.

以上、詳細に説明したように、本実施形態によると、ミスト回収装置１００は、酸性液体を収容するタンク２０に一端部が接続され、タンク２０内のミストを他端部から下方に排出するベント管５０と、ベント管５０の他端部の下方に配置され、ベント管５０の内部で凝縮したミスト（酸性液体）を回収する受け部４０と、受け部４０が回収した酸性液体をベント管５０の一端部近傍に戻す戻り管４１と、を備えている。また、ベント管５０の他端部には、受け部４０を上方から覆う形状を有する庇部３８が設けられている。そして、庇部３８の上面は、受け部４０の中心側から外周側に向けて下向きに傾斜しており、庇部３８の下面（外壁面８７）は、受け部４０の外周側から中心側に向けて下向きに傾斜している。これにより、本実施形態では、庇部３８の上面により、受け部４０への雨水の浸入、すなわちタンク２０内への雨水の浸入を抑制することができる。また、庇部３８の下面（外壁面８７）が受け部４０の外周側から中心側に向けて下向きに傾斜している。これにより、受け部４０に溜まったミストが、受け部４０と下側傘部３９Ｂの間を上昇して外壁面８７で結露しても、結露した酸性液体は外壁面８７の傾斜に沿って流れ、受け部４０に落ちるようになっている。これにより、酸性液体を効率よく回収し、タンク２０内に戻すことができる。 As described in detail above, according to the present embodiment, one end of the mist recovery device 100 is connected to the tank 20 for accommodating the acidic liquid, and the mist in the tank 20 is discharged downward from the other end. The receiving portion 40, which is arranged below the other end of the pipe 50 and the vent pipe 50 and collects the mist (acidic liquid) condensed inside the vent pipe 50, and the acidic liquid collected by the receiving portion 40 are collected by the vent pipe 50. A return pipe 41 for returning to the vicinity of one end of the above is provided. Further, at the other end of the vent pipe 50, an eaves 38 having a shape that covers the receiving portion 40 from above is provided. The upper surface of the eaves 38 is inclined downward from the center side of the receiving portion 40 toward the outer peripheral side, and the lower surface (outer wall surface 87) of the eaves 38 is from the outer peripheral side to the center side of the receiving portion 40. It is tilted downward toward it. Thereby, in the present embodiment, the upper surface of the eaves 38 can suppress the intrusion of rainwater into the receiving portion 40, that is, the intrusion of rainwater into the tank 20. Further, the lower surface (outer wall surface 87) of the eaves portion 38 is inclined downward from the outer peripheral side to the center side of the receiving portion 40. As a result, even if the mist accumulated in the receiving portion 40 rises between the receiving portion 40 and the lower umbrella portion 39B and condenses on the outer wall surface 87, the condensed acidic liquid flows along the inclination of the outer wall surface 87. , It is designed to fall on the receiving part 40. As a result, the acidic liquid can be efficiently recovered and returned to the tank 20.

また、本実施形態によると、庇部３８の外径（φ３）は、受け部４０の内径（φ４）の１．３倍〜２．０倍となっている。このように、庇部３８の外径が受け部４０の内径に対して大きめに設定されていることにより、受け部４０に対する雨水の浸入を効果的に抑制することができる。 Further, according to the present embodiment, the outer diameter (φ3) of the eaves 38 is 1.3 to 2.0 times the inner diameter (φ4) of the receiving portion 40. As described above, since the outer diameter of the eaves 38 is set to be larger than the inner diameter of the receiving portion 40, it is possible to effectively suppress the intrusion of rainwater into the receiving portion 40.

また、本実施形態によると、庇部３８の下面（外壁面８７）が水平面に対してなす角度が１５°〜４５°となっている。このように、外壁面８７を水平面に対して適度に傾斜した角度とすることで、外壁面８７にミストが結露しやすくなる。 Further, according to the present embodiment, the angle formed by the lower surface (outer wall surface 87) of the eaves 38 with respect to the horizontal plane is 15 ° to 45 °. By setting the outer wall surface 87 at an angle appropriately inclined with respect to the horizontal plane in this way, dew condensation is likely to occur on the outer wall surface 87.

また、本実施形態によると、庇部３８の下面に設けられているミストが通過する円形開口８９Ｂの内径（φ１）は、受け部４０の内径（φ４）に対して０．３倍〜０．７倍となっている。このように円形開口８９Ｂの内径と受け部４０の内径の大きさを設定することで、ミストや酸性液体を受け部４０に効率的に送ることができる。 Further, according to the present embodiment, the inner diameter (φ1) of the circular opening 89B through which the mist provided on the lower surface of the eaves 38 passes is 0.3 to 0 times the inner diameter (φ4) of the receiving portion 40. It is 7 times. By setting the size of the inner diameter of the circular opening 89B and the inner diameter of the receiving portion 40 in this way, mist or acidic liquid can be efficiently sent to the receiving portion 40.

なお、上記実施形態では、図５（ａ）に示すように、上側傘部３９Ａの上面及び下側傘部３９Ｂの下面（外壁面８７）が湾曲し、上側傘部３９Ａと下側傘部３９Ｂが椀型をしていてもよい。あるいは、上側傘部３９Ａと下側傘部３９Ｂのいずれか一方が、椀型であってもよい。また、図５（ｂ）に示す庇部３８’のように、上側傘部３９Ａ’の上面が、水平面であってもよい。このようにしても、上記実施形態と同様の作用効果を得ることができる。 In the above embodiment, as shown in FIG. 5A, the upper surface of the upper umbrella portion 39A and the lower surface (outer wall surface 87) of the lower umbrella portion 39B are curved, and the upper umbrella portion 39A and the lower umbrella portion 39B are curved. May be bowl-shaped. Alternatively, either one of the upper umbrella portion 39A and the lower umbrella portion 39B may be bowl-shaped. Further, the upper surface of the upper umbrella portion 39A'may be a horizontal plane as shown in the eaves portion 38'shown in FIG. 5 (b). Even in this way, the same action and effect as those of the above embodiment can be obtained.

なお、上記実施形態では、庇部３８の内部が中空である場合について説明したが、これに限られるものではない。例えば、庇部３８は、図６（ａ）に示すように、ミストや酸性液体の通路８４以外が中実であってもよい。また、図６（ｂ）に示すように、図６（ａ）の中実部分を肉抜きしてもよい。 In the above embodiment, the case where the inside of the eaves 38 is hollow has been described, but the present invention is not limited to this. For example, as shown in FIG. 6A, the eaves 38 may be solid except for the passage 84 of the mist or the acidic liquid. Further, as shown in FIG. 6B, the solid portion of FIG. 6A may be lightened.

なお、上記実施形態では、タンク２０内に酸性液体が収容されている場合について説明したが、これに限らず、タンク２０内には、例えば６０℃以上のアルカリ性液体が収容されてもよい。 In the above embodiment, the case where the acidic liquid is contained in the tank 20 has been described, but the present invention is not limited to this, and the tank 20 may contain, for example, an alkaline liquid having a temperature of 60 ° C. or higher.

上述した実施形態は本発明の好適な実施の例である。但し、これに限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変形実施可能である。 The above-described embodiment is an example of a preferred embodiment of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention.

３８ 庇部
４０ 受け部
４１ 戻り管
５０ ベント管（排出管）
８７ 外壁面（庇部の下面）
８９Ｂ 円形開口（開口部）
１００ ミスト回収装置 38 Eaves 40 Receiving part 41 Return pipe 50 Vent pipe (discharge pipe)
87 Outer wall surface (lower surface of eaves)
89B circular opening (opening)
100 mist recovery device

Claims (6)

６０℃以上の酸性液又はアルカリ性液を収容するタンクに一端部が接続され、前記タンク内のミストを他端部から下側に向けて排出する排出管と、
前記排出管の前記他端部の下方に配置され、前記排出管の内部で凝縮した前記ミストを回収する受け部と、
前記受け部が回収した前記ミストを前記排出管の前記一端部近傍に戻す戻り管と、を備え、
前記排出管の前記他端部には、前記受け部を上方から覆う形状を有する庇部が設けられ、前記庇部の上面は、水平又は前記受け部の中心側から外周側に向けて下向きに傾斜しており、前記庇部の下面は、前記受け部の外周側から中心側に向けて下向きに傾斜している、ことを特徴とするミスト回収装置。 An discharge pipe in which one end is connected to a tank containing an acidic liquid or an alkaline liquid having a temperature of 60 ° C. or higher and the mist in the tank is discharged downward from the other end.
A receiving portion that is arranged below the other end of the discharge pipe and collects the mist condensed inside the discharge pipe.
A return pipe for returning the mist collected by the receiving portion to the vicinity of the one end portion of the discharge pipe is provided.
The other end of the discharge pipe is provided with an eaves having a shape that covers the receiving portion from above, and the upper surface of the eaves is horizontal or downward from the center side of the receiving portion toward the outer peripheral side. A mist collecting device characterized in that the lower surface of the eaves portion is inclined downward from the outer peripheral side to the center side of the receiving portion. 前記庇部が略円盤状の形状を有するとともに、前記受け部の上部開口が略円形形状を有し、
前記庇部の外径は、前記受け部の内径の１．３倍〜２．０倍であることを特徴とする請求項１に記載のミスト回収装置。 The eaves have a substantially disk-like shape, and the upper opening of the receiving portion has a substantially circular shape.
The mist collecting device according to claim 1, wherein the outer diameter of the eaves is 1.3 to 2.0 times the inner diameter of the receiving portion. 前記庇部の下面が水平面に対してなす角度が１５°〜４５°であることを特徴とする請求項１又は２に記載のミスト回収装置。 The mist collecting device according to claim 1 or 2, wherein the lower surface of the eaves has an angle of 15 ° to 45 ° with respect to the horizontal plane. 前記庇部の下面に設けられている前記ミストが通過する開口部の内径は、前記受け部の内径に対して０．３倍〜０．７倍であることを特徴とする請求項１〜３のいずれか一項に記載のミスト回収装置。 Claims 1 to 3 characterized in that the inner diameter of the opening provided on the lower surface of the eaves portion through which the mist passes is 0.3 to 0.7 times the inner diameter of the receiving portion. The mist collecting device according to any one of the above. ６０℃以上の酸性液又はアルカリ性液を収容するタンクより蒸発するミストを排出管内に通し、前記排出管内を通過中に凝縮したミストを前記排出管の端部の下方に設けられた受け部で受け、受けた液を前記排出管に戻し、
前記受け部から前記ミストが蒸発した場合に、前記排出管に設けた前記受け部の上方を覆う庇部で前記ミストを凝縮させて前記受け部に戻す、ことを特徴とするミストの回収方法。 A mist that evaporates from a tank containing an acidic liquid or an alkaline liquid of 60 ° C. or higher is passed through the discharge pipe, and the mist condensed while passing through the discharge pipe is received by a receiving portion provided below the end of the discharge pipe. , Return the received liquid to the discharge pipe,
A method for collecting mist, which comprises condensing the mist at an eaves portion provided on the discharge pipe and covering the upper part of the receiving portion and returning the mist to the receiving portion when the mist evaporates from the receiving portion. 雨天の場合に前記庇部によって前記受け部に雨が入らないようにすることを特徴とする請求項５に記載のミストの回収方法。 The method for collecting mist according to claim 5, wherein the eaves prevent rain from entering the receiving portion in case of rain.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010274204A (en) * 2009-05-29 2010-12-09 Trinity Ind Corp Coating material collecting system
JP2011206696A (en) * 2010-03-30 2011-10-20 Jx Nippon Mining & Metals Corp Deposit drying device using waste heat
JP2018122910A (en) * 2017-02-02 2018-08-09 日立Ｇｅニュークリア・エナジー株式会社 Vent pipe stand of open tank and drop prevention attachment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010274204A (en) * 2009-05-29 2010-12-09 Trinity Ind Corp Coating material collecting system
JP2011206696A (en) * 2010-03-30 2011-10-20 Jx Nippon Mining & Metals Corp Deposit drying device using waste heat
JP2018122910A (en) * 2017-02-02 2018-08-09 日立Ｇｅニュークリア・エナジー株式会社 Vent pipe stand of open tank and drop prevention attachment

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