JP2000238701A - Method for filling container with granule - Google Patents

Method for filling container with granule

Info

Publication number
JP2000238701A
JP2000238701A JP3730199A JP3730199A JP2000238701A JP 2000238701 A JP2000238701 A JP 2000238701A JP 3730199 A JP3730199 A JP 3730199A JP 3730199 A JP3730199 A JP 3730199A JP 2000238701 A JP2000238701 A JP 2000238701A
Authority
JP
Japan
Prior art keywords
container
nitrogen gas
granule
filling
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3730199A
Other languages
Japanese (ja)
Inventor
Kenji Oyama
健二 大山
Kenji Senda
堅二 千田
Masahiro Wada
正博 和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Synthetic Chemical Industry Co Ltd
Original Assignee
Nippon Synthetic Chemical Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Synthetic Chemical Industry Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP3730199A priority Critical patent/JP2000238701A/en
Publication of JP2000238701A publication Critical patent/JP2000238701A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To safely and efficiently fill a container with a granule by filling the granule while making nitrogen gas flow in the container in the case of filling the container with the granule. SOLUTION: As a granule of an inorganic material and an organic material to be filled, although no particular restriction is applied, the granular of 250-1000 μm average particle diameter is preferred, 500-850 μm is more preferable, and to be concrete, a vinyl alcohol resin, a vinyl chloride resin, an acrylic resin, a polyester resin or the like can be used. In the case of filling a container (a) with the above granule, nitrogen gas is exhausted outside the container from, an exhaust outlet, while introducing the granule and the nitrogen gas from an introduction inlet. Namely the granule is mixed into the nitrogen gas just before the introduction inlet and the granule is introduced into the container (a) while the nitrogen gas is exhausted from the exhaust outlet to outside the container (a), and the nitrogen gas is circulated by operating a blower (b) or the like and used.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、ビニルアルコール
系樹脂をはじめとする各種粉流体のコンテナへの充填方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling various powder fluids such as vinyl alcohol resin into a container.

【０００２】[0002]

【従来の技術】従来より、粉体状の化学（工業）薬品、
食品等の粉流体は、その輸送に当たっては、ビンやボト
ル等の容器に詰めたり、或いは袋詰めにされることが多
いが、大量の工業原料として輸送する場合には、コンテ
ナ等に直接充填して輸送することが行われている。しか
しながら、粉流体は、溶液と異なり、コンテナに充填す
る時は、粉流体の飛散、充填率、粉塵爆発等が問題とな
り、効率的に充填を行うにはかなりの工夫を要する。例
えば、ホッパーの下にホース等の誘導装置を設けて、そ
の先をコンテナ（ライナーバッグ）に接続して、粉粒体
の自重で落下させて充填する方法やホッパーからロータ
リーフィーダーにより粉流体を切り出してその後風力を
利用してコンテナへ輸送・充填する方法等が行われてい
る。2. Description of the Related Art Conventionally, chemical (industrial) chemicals in powder form,
Powdered fluids such as food are often packed in containers such as bottles and bottles or packed in bags when transporting them. Is being transported. However, unlike the solution, the powder fluid causes problems such as the scattering of the powder fluid, the filling rate, the dust explosion, etc. when filling the container. For example, a guide device such as a hose is provided under the hopper, the tip of which is connected to a container (liner bag), and the powder is dropped by its own weight to fill the powder, or the powder fluid is cut out from the hopper by a rotary feeder. After that, methods of transporting and filling into containers using wind power have been carried out.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、前者の
自重による充填方法では、コンテナへの充填時間は短か
くて済むが充填口がコンテナの後方側面にあり、コンテ
ナの奥まで充填することは困難であり、また、後者のロ
ータリーフィーダーを用いた場合には、コンテナの奥ま
で充填することは可能となるが、充填時間が長くなり、
また装置的にも大がかりになり経済的でない。更にどち
らの場合も空気雰囲気中で行うため、粉流体の種類によ
っては、粉塵爆発の危険を伴うことがあり、改善が望ま
れるところである。However, in the former method of filling by its own weight, the filling time for the container is short, but the filling port is on the rear side surface of the container, and it is difficult to fill the inside of the container. Yes, and when the latter rotary feeder is used, it is possible to fill the inside of the container, but the filling time becomes longer,
In addition, the apparatus becomes large and not economical. Further, in both cases, since the treatment is performed in an air atmosphere, there is a danger of dust explosion depending on the type of powder fluid, and improvement is desired.

【０００４】[0004]

【課題を解決するための手段】そこで、本発明者はかか
る現況に鑑みて鋭意研究を重ねた結果、粉流体をコンテ
ナに充填するにあたって、コンテナ内で窒素ガスを流動
しながら行うこと、更にはコンテナに供給口と排出口を
設けて、該供給口の直前（直近）で窒素ガスに粉流体を
混合させて（窒素ガスに粉流体を乗せて）コンテナ内に
供給しながら、該排出口より窒素ガスをコンテナ外に排
出し、該窒素ガスをブロアー等により循環させることに
より、安全で効率よく粉流体をコンテナ内に充填できる
ことを見出して本発明を完成するに至った。Therefore, the present inventor has conducted intensive studies in view of the present situation, and as a result, when filling powder fluid into a container, the process is carried out while flowing nitrogen gas in the container. A supply port and a discharge port are provided in the container, and the powder fluid is mixed with the nitrogen gas immediately before the supply port (close to the supply port) (the powder fluid is put on the nitrogen gas) and supplied into the container. The inventors have found that by discharging nitrogen gas out of the container and circulating the nitrogen gas with a blower or the like, it is possible to fill the container with the powdered fluid safely and efficiently, thereby completing the present invention.

【０００５】[0005]

【発明の実施の形態】以下、本発明について具体的に説
明する。本発明の充填に用いられる粉流体としては特に
限定されないが、平均粒子径が２５０〜１０００μｍ
（更には５００〜８５０μｍ）のものが好ましく、かか
る平均粒子径が２５０μｍ未満では、コンテナの奥まで
粉流体を輸送できない場合があり、逆に１０００μｍを
越えるとより多くの窒素ガス量が必要となり窒素ガスの
排出側に微粉が多くなる傾向にあり好ましくない。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described specifically. The powder fluid used for filling in the present invention is not particularly limited, but the average particle diameter is 250 to 1000 μm.
If the average particle diameter is less than 250 μm, the powder fluid may not be able to be transported to the inner part of the container. Conversely, if the average particle diameter exceeds 1000 μm, a larger amount of nitrogen gas is required, and This is not preferable because the amount of fine powder tends to increase on the gas discharge side.

【０００６】かかる粉流体は無機物、有機物のいずれで
あってもよいが、有機物が好ましく、また、多少の溶剤
を含有していても良い。また、平均した粒度分布になっ
ていない粉流体や粒子の形状が不定形であり、特に粒子
に角があり、パール状になっていないためにころがりに
くい粉流体等においては、本発明の作用効果を特に発揮
することができる。本発明に用いられる粉流体として
は、具体的にはビニルアルコール系樹脂、塩化ビニル系
樹脂、アクリル系樹脂、ポリエステル系樹脂等を挙げる
ことができ、特にビニルアルコール系樹脂の場合には、
上記の条件を満足することが多く、好ましいが、これに
限定されるものではない。[0006] Such a powder fluid may be either an inorganic substance or an organic substance, but is preferably an organic substance, and may contain some solvent. Further, in the case of powdered fluids that do not have an average particle size distribution and the shape of particles are irregular, especially in powdered fluids that are difficult to roll because they have corners and are not pearl-like, the effects of the present invention are obtained. Can be particularly exhibited. As the powder fluid used in the present invention, specifically, vinyl alcohol-based resin, vinyl chloride-based resin, acrylic resin, polyester-based resin and the like can be mentioned, and particularly, in the case of vinyl alcohol-based resin,
The above conditions are often satisfied, and are preferable, but not limited thereto.

【０００７】本発明は、上記の如き粉流体をコンテナに
充填するにあたって、コンテナ内で窒素ガスを流動しな
がら行うことを最大の特徴とするものであり、かかる方
法について具体的に説明する。本発明においては、コン
テナに粉流体を充填する際に、該コンテナ内に窒素ガス
を流動させておけばよく、特にその方法については限定
されないが、効率的に行うには、図１に示すが如くコン
テナに供給口と排出口を設けて、該供給口より粉流体と
窒素ガスをコンテナ内に供給しながら、該排出口より窒
素ガスをコンテナ外に排出することが好ましい。この
時、該供給口の直前（直近）で窒素ガスに粉流体を混合
させて（窒素ガスに粉流体を乗せて）コンテナ内に供給
しながら、該排出口より窒素ガスをコンテナ外に排出
し、該窒素ガスをブロアー等により循環させることが好
ましい。The most characteristic feature of the present invention is that the filling of the powdered fluid into the container as described above is performed while flowing nitrogen gas in the container. Such a method will be described in detail. In the present invention, when filling the container with the powdered fluid, it is sufficient that nitrogen gas is allowed to flow in the container, and the method is not particularly limited. It is preferable to provide a supply port and a discharge port in the container as described above, and discharge the nitrogen gas from the discharge port to the outside of the container while supplying the powder fluid and the nitrogen gas into the container from the supply port. At this time, the nitrogen gas is discharged from the discharge port to the outside of the container while the powder fluid is mixed with the nitrogen gas immediately before (close to) the supply port and supplied into the container (by putting the powder fluid on the nitrogen gas). Preferably, the nitrogen gas is circulated by a blower or the like.

【０００８】かかる供給口と排出口の位置は特に限定さ
れないが、前者は粉流体の充填効率を考慮すればコンテ
ナ後面上部中央の位置が好ましく、後者は供給した粉流
体を吸引しないように、供給口の上部真上又は斜め上の
位置が好ましい。また、これら供給口と排出口の形状
は、円形、矩形、楕円形、多角形等いずれの形状でもよ
いが、通常は円形が採用され、供給口と排出口の形状は
同じでも異なっていてもよい。尚、通常コンテナ内に粉
流体を充填するに当たっては、該コンテナ内にはライナ
ーバッグが設けられており、かかるライナーバッグ内に
粉流体を充填するので、かかる供給口や排出口はライナ
ーバッグに設ければよい。Although the positions of the supply port and the discharge port are not particularly limited, the former is preferably located at the center of the upper portion of the rear surface of the container in consideration of the filling efficiency of the powder fluid, and the latter is supplied so as not to suck the supplied powder fluid. A position directly above or obliquely above the mouth is preferred. In addition, the shape of the supply port and the discharge port may be any shape such as a circle, a rectangle, an ellipse, and a polygon, but usually a circle is adopted, and the shapes of the supply port and the discharge port may be the same or different. Good. Usually, when filling the container with the powdered fluid, a liner bag is provided in the container. Since the powdered fluid is filled in the liner bag, the supply port and the discharge port are provided in the liner bag. Just do it.

【０００９】また、ライナーバッグの内圧は、粉粒体を
均一に積み込むため、０〜＋５０ｍｍＡｑ（更には０〜
＋２０ｍｍＡｑ）に保つことが好ましく、かかる内圧が
０ｍｍＡｑ未満となるとライナーバッグがばたついて、
粉粒体に当たり、均一に積み込めなかったり、或いはラ
イナーバッグが破損する恐れがあり、逆に５０ｍｍＡｑ
を越えるとライナーバッグが破裂して、粉粒体が飛散す
るおそれがあり好ましくない。The internal pressure of the liner bag is 0 to +50 mmAq (more preferably 0 to +50 mmAq) in order to load the granules uniformly.
+20 mmAq), and when the internal pressure is less than 0 mmAq, the liner bag flaps,
There is a possibility that the powder may hit the powder and not be evenly loaded or the liner bag may be damaged.
If it exceeds, the liner bag is ruptured, and there is a possibility that the granular material may be scattered, which is not preferable.

【００１０】かかる供給口からは、粉流体と窒素ガスを
コンテナ（ライナーバッグ）内に供給するのであるが、
この時の粉流体の供給速度は、粉流体の平均粒子径、見
かけ比重、粒度分布、形状等により一概に言えないが、
通常は１５〜４０ｍ／ｓｅｃ（更には２０〜３０ｍ／ｓ
ｅｃ）に設定することが好ましく、かかる速度が１５ｍ
／ｓｅｃ未満では、コンテナの奥まで十分に充填するこ
とが困難となり、逆に４０ｍ／ｓｅｃを越えると循環窒
素ガス中の微粉の濃度が上昇し好ましくない。かかる粉
流体は予め窒素ガスと混合しておいてもよいが、通常は
上述したように供給口の直前で窒素ガス流に乗せればよ
い。From such a supply port, powder fluid and nitrogen gas are supplied into a container (liner bag).
The supply speed of the powder fluid at this time cannot be said unconditionally due to the average particle diameter of the powder fluid, apparent specific gravity, particle size distribution, shape, etc.
Usually 15 to 40 m / sec (further 20 to 30 m / s
ec), and the speed is 15 m
If it is less than / msec, it will be difficult to sufficiently fill the inside of the container, whereas if it exceeds 40 m / sec, the concentration of fine powder in the circulating nitrogen gas will be undesirably increased. Such a powder fluid may be mixed with nitrogen gas in advance, but usually, as described above, may be placed on the nitrogen gas flow just before the supply port.

【００１１】また、窒素ガスの供給量は４０〜６０Ｎｍ
3／ｍｉｎ（更には４５〜５５Ｎｍ3／ｍｉｎ）とするこ
とが好ましく、かかる供給量が４０Ｎｍ3／ｍｉｎ未満
ではコンテナの奥まで十分に充填することが困難とな
り、逆に７５Ｎｍ3／ｍｉｎを越えると循環窒素ガス中
の微粉の濃度が上昇して好ましくない。かかる窒素ガス
については、コンテナ内を循環した後に排出口からコン
テナ外に排出する必要があり、ガスブロアー等の装置を
排出口にホース、配管等を介して設ければよい。この時
に、コンテナ外に排出された窒素ガスを供給口に戻して
循環（再利用）させるようにすることが好ましく、具体
的にはサイクロンで微粉を取り除いた後循環する等の方
法を採用することが可能である。The supply amount of the nitrogen gas is 40 to 60 Nm.
3 / min (more preferably 45 to 55 Nm 3 / min). If the supply amount is less than 40 Nm 3 / min, it is difficult to sufficiently fill the inside of the container, and conversely, it exceeds 75 Nm 3 / min. And the concentration of the fine powder in the circulating nitrogen gas is undesirably increased. It is necessary to discharge such nitrogen gas from the outlet after circulating in the container, and a device such as a gas blower may be provided at the outlet via a hose, piping, or the like. At this time, it is preferable that the nitrogen gas discharged outside the container is returned to the supply port and circulated (reused). Specifically, a method such as circulating after removing fine powder with a cyclone is adopted. Is possible.

【００１２】また、かかる窒素ガスによりコンテナ内の
空気は置換されるわけであるが、この時のコンテナ内の
酸素濃度は１０体積％以下（更には８体積％以下）とす
ることが粉塵爆発を防止する上で好ましい。また、供給
口からコンテナ内に供給される粉粒体と窒素ガスとの重
量比率は１／１〜１０／１（更には５／１〜８／１）が
好ましく、かかる重量比率が１／１未満では充填に長時
間を要することとなり、逆に１０／１を越えると粒流体
が窒素ガス流に乗りにくくなって好ましくない。The air in the container is replaced by the nitrogen gas. At this time, the oxygen concentration in the container is set to 10% by volume or less (more preferably, 8% by volume or less). It is preferable for prevention. Further, the weight ratio between the powder and the granular material supplied from the supply port into the container and the nitrogen gas is preferably 1/1 to 10/1 (more preferably 5/1 to 8/1), and the weight ratio is 1/1. If it is less than 10%, it takes a long time to fill. On the other hand, if it exceeds 10/1, the particulate fluid is difficult to get in the nitrogen gas flow, which is not preferable.

【００１３】[0013]

【実施例】以下、実施例を挙げて本発明を具体的に説明
する。 実施例１ 図１に示されるようにコンテナ（ライナーバッグ）に供
給口と排出口を設けて、下記の条件で、粉流体（ポリビ
ニルアルコール）の充填を行った。The present invention will be specifically described below with reference to examples. Example 1 A container (liner bag) was provided with a supply port and a discharge port as shown in FIG. 1, and charged with a powder fluid (polyvinyl alcohol) under the following conditions.

【００１４】 ・コンテナ ２０フィートコンテナ ・粉流体の平均粒子径 ５００μｍ ・粉流体の見かけ比重 ０．６７ｇ／ｃｃ ・粉流体の形状 不定形 ・粉流体の供給速度 ２３ｍ／ｍｉｎ ・窒素ガスの流量 ４３Ｎｍ3／ｍｉｎ ・ライナーバッグ内の酸素濃度 ８体積％Container 20 feet container Average powder particle diameter 500 μm Apparent specific gravity of powder fluid 0.67 g / cc Powder fluid indefinite shape Powder fluid supply speed 23 m / min Nitrogen gas flow 43 Nm 3 / Min ・ Oxygen concentration in liner bag 8% by volume

【００１５】上記の条件で、粉流体の充填を行ったが、
約１５ｔの粉流体を約０．６時間で充填することがで
き、ほぼコンテナの空間容積の約８０％以上に充填をす
ることができ、粉塵爆発の心配もなかった。Under the above conditions, the powder fluid was filled.
About 15 tons of powder fluid could be filled in about 0.6 hours, almost 80% or more of the space volume of the container could be filled, and there was no fear of dust explosion.

【００１６】実施例２ 実施例１において、充填条件を下記の如くして同様に粉
流体の充填を行った。 ・コンテナ ２０フィートコンテナ ・粉流体の平均粒子径 ５００μｍ ・粉流体の見かけ比重 ０．６７ｇ／ｃｃ ・粉流体の形状 不定形 ・粉流体の供給速度 ２８ｍ／ｍｉｎ ・窒素ガスの流量 ５３Ｎｍ3／ｍｉｎ ・ライナーバッグ内の酸素濃度 ７体積％Example 2 In Example 1, the filling of the powdery fluid was performed in the same manner as described above under the following filling conditions.・ Container 20-foot container ・ Average particle diameter of powder fluid 500μm ・ Apparent specific gravity of powder fluid 0.67g / cc ・ Shape of powder fluid Undefined ・ Supply speed of powder fluid 28m / min ・ Flow rate of nitrogen gas 53Nm 3 / min ・Oxygen concentration in liner bag 7% by volume

【００１７】上記の条件で、粉流体の充填を行ったが、
約１９ｔの粉流体を約０．８時間で充填することがで
き、ほぼコンテナの空間容積の約９０％以上に充填をす
ることができ、粉塵爆発の心配もなかった。Under the above conditions, the powder fluid was filled.
About 19 t of powder fluid could be filled in about 0.8 hours, and it was possible to fill about 90% or more of the space volume of the container, and there was no fear of dust explosion.

【００１８】[0018]

【発明の効果】本発明の粉流体の充填方法は、粉流体を
コンテナ内に効率的に充填することができ、特にビニル
アルコール系樹脂等の樹脂粉体のコンテナへの充填に有
用である。The powder fluid filling method of the present invention can efficiently fill a powder fluid into a container, and is particularly useful for filling a resin powder such as a vinyl alcohol resin into a container.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施の概念図FIG. 1 is a conceptual diagram of an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

ａ：コンテナ（ライナーバッグ） ｂ：窒素ガス循環用ブロアー ｃ：循環窒素ガス ｄ：粉流体 ｅ：充填された粉流体 イ：排出口 ロ：供給口 a: container (liner bag) b: blower for circulating nitrogen gas c: circulating nitrogen gas d: powder fluid e: filled powder fluid i: outlet b: supply port

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E018 AA03 AB01 AB03 BB09 CA02 CA03 EA01  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E018 AA03 AB01 AB03 BB09 CA02 CA03 EA01

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 粉流体をコンテナに充填するにあたっ
て、コンテナ内で窒素ガスを流動しながら行うことを特
徴とする粉流体のコンテナ充填方法。1. A method for filling a container with a powder fluid, wherein the container is filled with the powder fluid while flowing a nitrogen gas in the container. 【請求項２】 コンテナに供給口と排出口を設けて、該
供給口より粉流体と窒素ガスをコンテナ内に供給しなが
ら、該排出口より窒素ガスをコンテナ外に排出すること
を特徴とする請求項１記載の粉流体のコンテナ充填方
法。2. A container is provided with a supply port and a discharge port, and nitrogen gas is discharged from the discharge port to the outside of the container while powder fluid and nitrogen gas are supplied into the container from the supply port. The method for filling a container of powder fluid according to claim 1. 【請求項３】 供給口直前で窒素ガスに粉粒体を混合さ
せることを特徴とする請求項２記載の粉流体のコンテナ
充填方法。3. The method according to claim 2, wherein the granular material is mixed with the nitrogen gas immediately before the supply port. 【請求項４】 粉流体が供給口を通過する時の速度が２
０〜３０ｍ／ｓｅｃであることを特徴とする請求項２ま
たは３記載の粉流体のコンテナ充填方法。4. The speed at which the powder fluid passes through the supply port is 2
The method for filling a container of powdery fluid according to claim 2 or 3, wherein the pressure is 0 to 30 m / sec. 【請求項５】 粉流体の平均粒子径が２５０〜１０００
μｍであることを特徴とする請求項１〜４いずれか記載
の粉流体のコンテナ充填方法。5. The powder fluid has an average particle size of 250 to 1000.
The method for filling a container for powdery fluid according to any one of claims 1 to 4, wherein the particle diameter is μm. 【請求項６】 粉流体がビニルアルコール系樹脂である
ことを特徴とする請求項１〜５いずれか記載の粉流体の
コンテナ充填方法。6. The method according to claim 1, wherein the liquid powder is a vinyl alcohol resin.
JP3730199A 1999-02-16 1999-02-16 Method for filling container with granule Pending JP2000238701A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008285232A (en) * 2007-05-16 2008-11-27 Bayer Materialscience Ag Method for loading/unloading granular resin material into/from transport container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008285232A (en) * 2007-05-16 2008-11-27 Bayer Materialscience Ag Method for loading/unloading granular resin material into/from transport container

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