JPH06285357A - Gas-liquid contact unit and gas-liquid contact device - Google Patents
Gas-liquid contact unit and gas-liquid contact deviceInfo
- Publication number
- JPH06285357A JPH06285357A JP4212771A JP21277192A JPH06285357A JP H06285357 A JPH06285357 A JP H06285357A JP 4212771 A JP4212771 A JP 4212771A JP 21277192 A JP21277192 A JP 21277192A JP H06285357 A JPH06285357 A JP H06285357A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- liquid
- contact
- liquid contact
- dimensional
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32282—Rods or bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32286—Grids or lattices
- B01J2219/32289—Stretched materials
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、メッシュ状の立体編物
を充填物として用いた、排ガスあるいは排液処理用の気
液接触ユニットおよび気液接触装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid contacting unit and a gas-liquid contacting device for treating exhaust gas or waste liquid, which uses a mesh-shaped three-dimensional knit as a filler.
【０００２】[0002]
【従来の技術】気液接触装置は、有害成分や悪臭等を含
む排ガスを液体で洗浄したり、気体中の有用成分を液体
で回収する等の気体処理や、液体中の有害成分を気体中
へ移行させる、あるいは液体中の有用成分を気体中に回
収することによって液体の処理（以下排ガス・排液処理
として総称する）をする等の目的で用いられる装置であ
り、工業的には充填塔方式や多孔板塔方式が多用されて
いる。2. Description of the Related Art A gas-liquid contactor is used for gas treatment such as cleaning exhaust gas containing harmful components and odors with a liquid, recovering useful components in a gas with a liquid, and removing harmful components in a liquid from a gas. It is a device used for the purpose of treating liquid (collectively referred to as exhaust gas / exhaust liquid treatment) by transferring to liquid or recovering useful components in liquid into gas. The system and the perforated plate system are widely used.
【０００３】充填塔方式では、種々の材質で製造された
ラシヒリングや合成樹脂製のテラレット（商品名）等の
比表面積の大きな充填物を用いるが、これらの充填物は
一般的に不規則充填される。このため、気液接触時に
偏流や逸流を生じ易く、圧力損失が増大する、液体に
固形分が混入する系では目詰まりを起こし易い、充填
塔を高くしなければ充分な接触面積が得られない等の問
題があり、また多孔板方式では、目詰まりは起こしにく
いが圧力損失が大きく、排ガス・排液処理効率が低いと
いう問題があった。In the packed column system, packings having a large specific surface area such as Raschig rings made of various materials and synthetic resin terraret (trade name) are used, but these packings are generally irregularly packed. It For this reason, uneven flow or escape is likely to occur at the time of gas-liquid contact, pressure loss increases, clogging easily occurs in a system in which solid content is mixed in the liquid, sufficient contact area can be obtained unless the packed tower is raised. The porous plate method has a problem that clogging is unlikely to occur but pressure loss is large and exhaust gas / exhaust liquid treatment efficiency is low.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記の従来技
術の問題を解消して、気液接触部の圧力損失が低い、
排ガス・排液を高効率で処理できる、充填高さが低
く装置がコンパクトでメンテナンスも容易である、等の
特徴を有する高性能な気液接触ユニットおよび気液接触
装置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and the pressure loss at the gas-liquid contact portion is low.
An object of the present invention is to provide a high-performance gas-liquid contact unit and a gas-liquid contact device, which are capable of treating exhaust gas and waste liquid with high efficiency, have a low filling height, are compact in size, and are easy to maintain. To do.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明者等が鋭意検討した結果、立体編物を充填物と
して使用することによって、従来のラシヒリング等を使
用した場合に比べてはるかに良好な気液接触状態を作り
出せるという知見を得、本発明に至ったものである。す
なわち本発明は、滴下液体と上昇気体を接触させる気液
接触ユニットが、立体編物を垂直ないしは略垂直方向、
もしくは山形、谷形、波形状に列設、あるいは折り畳ん
だものであり、必要によりワイヤメッシュ状立体網状体
を立体編物間に介装したものであるところに要旨を有す
るものである。また、これらの気液接触ユニットを用い
た気液接触装置も本発明の要旨に含まれる。Means for Solving the Problems As a result of intensive studies by the present inventors in order to achieve the above object, the use of a three-dimensional knitted fabric as a filling material results in a far greater amount than in the case of using conventional Raschig rings or the like. The present invention has been achieved based on the knowledge that a good gas-liquid contact state can be created. That is, the present invention, the gas-liquid contact unit for contacting the dripping liquid and the rising gas, the three-dimensional knit vertical or substantially vertical direction,
Alternatively, it is arranged in a mountain shape, a valley shape, a corrugated shape, or is folded, and has a gist in that a wire mesh-shaped three-dimensional net body is interposed between three-dimensional knitted fabrics if necessary. Moreover, a gas-liquid contact device using these gas-liquid contact units is also included in the gist of the present invention.
【０００６】[0006]
【作用】以下本発明の気液接触ユニットおよび気液接触
装置を図面を参照しつつ詳細に説明する。本発明は下記
図面に限定されるものではなく、また便宜上排ガスを洗
浄用液体で処理する工程について説明するが、本発明の
気液接触装置においては、気（液）体中の有用成分を液
（気）体で回収したり、排液を気体で処理することもも
ちろん可能である。The gas-liquid contact unit and the gas-liquid contact device of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to the following drawings, and for convenience, the step of treating exhaust gas with a cleaning liquid will be described. In the gas-liquid contactor of the present invention, useful components in a gas (liquid) body are Of course, it is also possible to collect (gas) body and to treat the waste liquid with gas.
【０００７】図１は本発明による気液接触装置の一例の
断面概略説明図である。気液接触装置本体１は下部に気
体供給用ブロア２を有しており、該ブロア２によって排
ガスが本体１内部の気液接触部３へ送入される。気液接
触部３には接触ユニット４が装填されており、液体供給
管５を経てスプレーノズル６から噴射される洗浄液と、
上記ブロア２によって送入された排ガスが接触ユニット
４内の立体編物上で接触することによって排ガスが浄化
される。浄化されたガスはミストキャッチャー７を通
り、排出孔８より排出される。FIG. 1 is a schematic sectional view showing an example of a gas-liquid contact device according to the present invention. The gas-liquid contactor main body 1 has a gas supply blower 2 in the lower part, and the exhaust gas is sent to the gas-liquid contact portion 3 inside the main body 1 by the blower 2. The gas-liquid contact portion 3 is loaded with a contact unit 4, and a cleaning liquid sprayed from a spray nozzle 6 through a liquid supply pipe 5;
The exhaust gas sent by the blower 2 comes into contact with the three-dimensional knitted fabric in the contact unit 4 to purify the exhaust gas. The purified gas passes through the mist catcher 7 and is discharged from the discharge hole 8.
【０００８】本発明では気液接触部に充填される充填物
として立体編物を利用した接触ユニットを用いるところ
に大きな特徴を有するが、該立体編物とは平面的な編物
あるいは織物を複数枚積層して厚さ方向にロービング等
の繊維束を配列し、これを多方向の繊維束に組織させる
ことによって得られる立体的な構造を有する繊維製品の
一種である。これら立体繊維構造には多くの考案・発明
が開示されている（例えば、特開昭61-258055 号、同 6
3-270848号、実開昭64-30389号、特開平1-250454号、同
1-292156号公報）。なお上記の立体編物は、複合材料の
中間基材や衣料素材等に使用されるものがほとんどで、
気液接触ユニットとしては用いられていなかった。The present invention is characterized in that a contact unit using a three-dimensional knitted fabric is used as a filling material filled in the gas-liquid contact portion. The three-dimensional knitted fabric is formed by laminating a plurality of flat knitted fabrics or woven fabrics. Is a type of fiber product having a three-dimensional structure obtained by arranging fiber bundles such as rovings in the thickness direction and organizing the fiber bundles into multi-direction fiber bundles. Many ideas and inventions have been disclosed in these three-dimensional fiber structures (for example, JP-A-61-258055 and JP-A-6-258055).
No. 3-270848, No. 64-30389, JP-A 1-250454,
1-292156). Most of the above three-dimensional knitted fabrics are used for intermediate base materials and clothing materials of composite materials,
It was not used as a gas-liquid contact unit.
【０００９】本発明における充填物としては、柔軟でか
つ空隙の多い立体構造を持つ編物製品であればその立体
構造や製法は限定されないが、例えば表面部が空隙の多
いメッシュ状になっている立体編物等が好ましく利用で
きる。The filling material in the present invention is not limited in its three-dimensional structure and manufacturing method as long as it is a knitted product having a three-dimensional structure that is flexible and has many voids. For example, a three-dimensional mesh whose surface has many voids. A knitted fabric or the like can be preferably used.
【００１０】図２には立体編物の一例として、六角形の
メッシュ構造を有する立体編物のモデル説明図を示し
た。立体編物４１は、ループ網目４５によって平面的に
形成されている六角形の開口部４２を多数有する、２枚
の対峙したメッシュ編物シート４３ａ，ｂ間を連結糸４
４で厚み方向に連結した構造を有するものである。図２
においては、立体編物の六角形開口部４２のＸ方向の長
さがＸに直交する方向より長いものを示したが、開口部
の形状は略円，正方形，長方形等特に限定されない。好
ましい形状は図２のような横長六角形である。立体編物
を列設する、あるいは折り畳む時には、六角形が横長に
なっている方が後述のバブリングがうまく起こるため好
ましい。また特に大きな立体編物を折り畳む時には、六
角形が横長になるように折る方が曲げやすい。FIG. 2 shows a model explanatory view of a three-dimensional knitted fabric having a hexagonal mesh structure as an example of the three-dimensional knitted fabric. The three-dimensional knitted fabric 41 has a large number of hexagonal openings 42 formed in a plane by a loop mesh 45, and connects the two facing mesh knitted fabric sheets 43a and 43b with a connecting yarn 4
4 has a structure connected in the thickness direction. Figure 2
In the above, the hexagonal opening 42 of the three-dimensional knit has a length in the X direction longer than the direction orthogonal to X, but the shape of the opening is not particularly limited to a substantially circular shape, a square shape, a rectangular shape, or the like. A preferred shape is a horizontally long hexagon as shown in FIG. When the three-dimensional knitted fabrics are arranged in a row or folded, it is preferable that the hexagons have a horizontally long shape because bubbling described later occurs well. Further, when folding a particularly large three-dimensional knit, it is easier to bend the hexagon so that it is horizontally long.
【００１１】立体編物の厚さは連結糸４４によって調整
することができ、本発明においては５〜２０ｍｍが好ま
しい。立体編物の空隙率は、気液接触部を提供する意味
から緻密過ぎてもまたあまりに粗過ぎても好ましくな
く、８５〜９７％が好ましい。連結糸４４はメッシュの
ループ毎に連結されていてもよく、いくつかのループを
まとめて一か所で連結されているような構造でもよい。
さらに連結糸が単なる繊維束の状態でメッシュ編物シー
トを引っかけて連結していてもよく、ループ状のような
網目を形成して連結してもよい。The thickness of the three-dimensional knit can be adjusted by the connecting yarn 44, and is preferably 5 to 20 mm in the present invention. The porosity of the three-dimensional knit is not too dense or too coarse from the viewpoint of providing the gas-liquid contact portion, and is preferably 85 to 97%. The connecting thread 44 may be connected for each loop of the mesh, or may have a structure in which several loops are connected together at one place.
Furthermore, the connecting yarn may be hooked to connect the mesh knitted sheet in the state of a simple fiber bundle, or may be connected by forming a mesh like a loop.
【００１２】立体編物の素材としては、ポリエチレン、
ポリプロピレン等のポリオレフィンや塩化ビニリデン、
ポリエステル、ナイロン、アラミド、炭素繊維等の耐食
性に優れた有機繊維や無機繊維、金属繊維等が好ましく
用いられ、メッシュ素材と連結糸の素材が異なっていて
もよい。As the material of the three-dimensional knit, polyethylene,
Polyolefin such as polypropylene and vinylidene chloride,
Organic fibers, inorganic fibers, metal fibers and the like having excellent corrosion resistance such as polyester, nylon, aramid, and carbon fibers are preferably used, and the materials of the mesh material and the connecting yarn may be different.
【００１３】上記のような構造の立体編物は、接触ユニ
ットとして気液接触部を提供する。図３には本発明の気
液接触ユニットの一例の斜視図を示した。気液接触部３
は接触ユニット４ａ，４ｂ，４ｃが積層されて構成され
ており、接触ユニット４は立体編物４１がＶ字波形状に
形成され、接触ユニット４ａの山部Ｘと４ｂの山部Ｙが
互いに交差するように積層されているものである。ユニ
ット４ｂと４ｃも同様に積層されている。立体編物をＶ
字波形状に形成するには、逆Ｖ字形の立体編物を多数列
設させるか、または大きな立体編物を折り畳んで波形状
に形成すればよい。山部ＸとＸの間のピッチの長さは、
用いた立体編物の空隙率と関係して圧力損失の決定要因
となるため一義的には決められないが、２０〜６０mm程
度が好ましい。The three-dimensional knitted fabric having the above structure provides a gas-liquid contact portion as a contact unit. FIG. 3 shows a perspective view of an example of the gas-liquid contact unit of the present invention. Gas-liquid contact part 3
Is formed by stacking contact units 4a, 4b, 4c. In the contact unit 4, the three-dimensional knit 41 is formed in a V-shaped shape, and the peak portions X of the contact unit 4a and the peak portions Y of 4b intersect each other. It is laminated in this way. The units 4b and 4c are similarly stacked. V three-dimensional knit
In order to form a wave-like shape, a large number of inverted V-shaped three-dimensional knitted fabrics may be arranged in a row, or a large three-dimensional knitted fabric may be folded to form a wavy shape. The pitch length between the mountains X and X is
It cannot be uniquely determined because it becomes a deciding factor of the pressure loss in relation to the porosity of the used three-dimensional knit, but it is preferably about 20 to 60 mm.
【００１４】接触ユニット４内に立体編物４１を充填す
る他の方法としては、図４に示すように任意の大きさの
立体編物４１を立てて列設する方法があり、各立体編物
４１間は密着させるか、あるいは各４１間に空間もしく
はスペーサー等を設ける方法を用いることができる。As another method of filling the three-dimensional knitted fabric 41 in the contact unit 4, there is a method of standing up and standing the three-dimensional knitted fabric 41 of any size as shown in FIG. A method of bringing them into close contact with each other or providing a space or a spacer between each 41 can be used.
【００１５】また図５のように立体編物を波形状もしく
はパルス波形状に折り畳み、その空間部分に立体網状体
をスぺーサーとして介装した接触ユニットも好ましく利
用できる。スペーサーとしては、合成樹脂製や他の素材
のワイヤーメッシュ状立体網状体や波板等の他に、従来
法の充填物等を用いることができるが、スぺーサーも気
液接触部となり得る点、および圧力損失を減少させる点
等から立体網状体が好ましく使用される。立体網状体
は、特にその構造や素材等は限定されないが、例えばポ
リプロピレンの様な熱可塑性ポリマーを加熱溶融して曲
線状に押し出すことによってカールさせたワイヤー状の
ものを空隙率が８０〜９８％になるように重ねて接点を
加熱溶着して作成したもの等が利用できる。Further, as shown in FIG. 5, a contact unit in which a three-dimensional knitted fabric is folded in a wave shape or a pulse wave shape and a three-dimensional net body is interposed as a spacer in the space portion can be preferably used. As the spacer, in addition to a wire mesh-shaped three-dimensional net body or corrugated plate made of synthetic resin or other material, a conventional filling material can be used, but a spacer can also serve as a gas-liquid contact portion. And a three-dimensional reticulate body is preferably used from the viewpoint of reducing pressure loss. The three-dimensional reticulate body is not particularly limited in its structure, material, etc., but for example, a wire-like thing curled by heating and melting a thermoplastic polymer such as polypropylene and curving it into a curvilinear form has a porosity of 80 to 98%. It is possible to use a contact made by heating and welding the contacts so that
【００１６】図４，５に例示した気液接触ユニットは、
図のように該ユニット４同士を直交させて積層してもよ
いが、同じ向きに積層してあってもよい。さらに図４中
の立体編物４１を傾斜するように立設させてもよく、ベ
ルト状の立体編物をとぐろ状に巻いて円形の接触ユニッ
トとしてもよい。吸収効率を上げるために接触ユニット
を高さ方向に積層して多段にする方が好ましいが、あま
り多く積層しても吸収効率が向上しないことがある。The gas-liquid contact unit illustrated in FIGS.
As shown in the figure, the units 4 may be stacked orthogonally to each other, but may be stacked in the same direction. Furthermore, the three-dimensional knitted fabric 41 in FIG. 4 may be erected so as to be inclined, or the belt-shaped three-dimensional knitted fabric may be wound in a claw shape to form a circular contact unit. In order to increase the absorption efficiency, it is preferable to stack the contact units in the height direction in multiple stages, but if too many layers are stacked, the absorption efficiency may not be improved.
【００１７】図６には図５に示した形状の接触ユニット
における段数と吸収効率の関係を示した。処理ガスはＨ
Ｃｌで処理液体は水である。図６から、接触ユニットが
２〜４段になるとほぼ同程度の吸収効率となり、中でも
３段ユニットが最も吸収効率が良いことがわかる。この
場合の接触ユニットの形態では３段積層が効率が良かっ
たが、接触ユニットの種類（立体編物の列設方法やスぺ
ーサーの有無）や処理ガス・液体の種類に最も適したユ
ニット段数を選択するとよい。FIG. 6 shows the relationship between the number of stages and the absorption efficiency in the contact unit having the shape shown in FIG. Processing gas is H
The liquid treated with Cl is water. From FIG. 6, it can be seen that when the contact units have 2 to 4 stages, the absorption efficiency is almost the same, and among them, the 3 stage unit has the highest absorption efficiency. In the case of the contact unit in this case, three-stage stacking was efficient, but the number of unit stages most suitable for the type of contact unit (method of arranging three-dimensional knitted fabric and presence of spacers) and the type of processing gas / liquid should be determined. Good to choose.
【００１８】本発明による気液接触ユニットにおける実
際の気液接触機構を説明すると、次のとおりとなる。 上方からスプレーノズルで供給される液滴が、垂直も
しくは傾斜されて立設されている立体編物表面のメッシ
ュ層を伝って、メッシュ開口部で液体表面張力による膜
を形成しながら落下する。 下方から気体が、連結糸によって形成されているメッ
シュ層間の空間部あるいはメッシュ開口部を通って上昇
しようとする。 メッシュの開口部で連続的に気泡が形成されては壊れ
る現象、いわゆるバブリング現象が起きる。 立体編物が波形状に充填されている場合は、立体編物
の全斜面部分でバブリング現象が起きている。The actual gas-liquid contact mechanism in the gas-liquid contact unit according to the present invention will be described as follows. Droplets supplied by a spray nozzle from above travel along a mesh layer on the surface of a three-dimensional knit that is vertically or inclined to stand, and drop while forming a film by liquid surface tension at the mesh openings. From below, gas tends to rise through the space between the mesh layers formed by the connecting threads or through the mesh openings. A so-called bubbling phenomenon occurs in which bubbles are continuously formed and broken at the openings of the mesh. When the three-dimensional knitted fabric is filled in the corrugated shape, the bubbling phenomenon occurs on the entire slope portion of the three-dimensional knitted fabric.
【００１９】このような機構で気液接触が行なわれてい
るため、立体編物を気液接触部分に用いると、特にバブ
リング現象の効果で気泡の表面積の分、気体と液体の接
触面積が増加し、しかも連続的に気泡が形成されるので
あるから、飛躍的に接触面積および吸収効率の増大がも
たらされるのである。Since gas-liquid contact is performed by such a mechanism, when a three-dimensional knitted fabric is used in the gas-liquid contact portion, the contact area between gas and liquid increases by the surface area of bubbles due to the effect of the bubbling phenomenon. Moreover, since bubbles are continuously formed, the contact area and the absorption efficiency are dramatically increased.
【００２０】また本発明においては、下方からの気体が
メッシュ開口部でバブリングするものと、メッシュ層間
の空間部を抜けていくものとに別れるため、気体流速を
大きくしても圧力損失を低く抑えることができると考え
られるが、驚くべきことに、接触ユニットを例えば図５
のような形態の３段積層にした例では吸収効率が９９〜
９９．８％レベルに達しており、メッシュ層間の空間部
やスペーサー間を抜けていく気体も上段の接触ユニット
中で液体と接触していることは確実である。これは立体
編物上で非常に効率的にバブリングが起こり、偏流や逸
流を起こすことなく低圧損で気液接触が進行するためで
あると考えられる。この機能はスぺーサーを介装しても
同様に働く。またスぺーサー上でもバブリングが起こっ
ていることも充分考えられる。Further, in the present invention, gas from below is bubbled through the mesh openings and gas that escapes through the space between the mesh layers. Therefore, the pressure loss is kept low even if the gas flow velocity is increased. It is believed that it is possible, but, surprisingly, that the contact unit is, for example, as shown in FIG.
The absorption efficiency is 99-
It has reached the 99.8% level, and it is certain that the gas passing through the space between the mesh layers and between the spacers is also in contact with the liquid in the upper contact unit. It is considered that this is because bubbling occurs very efficiently on the three-dimensional knitted fabric, and gas-liquid contact proceeds with a low pressure loss without causing uneven flow or escape. This function works similarly even if a spacer is used. It is also possible that bubbling is occurring on the spacer.
【００２１】さらに、波形状に充填した接触ユニットを
３段使用した場合には、接触ユニット中を通過するガス
風速を平均化する整流効果が確認された。本発明の気液
接触ユニットは上記のように極めて効率的であるので、
接触ユニット１段の高さは３０〜１００ｍｍ、より好ま
しくは５０〜６０ｍｍで充分である。従って接触ユニッ
トを３段仕様とした場合でも、気液接触部はせいぜい１
００〜３００ｍｍ程度となる。本発明によれば上記のよ
うに効率的に気液接触が可能であるので接触ユニット自
体の占有面積をも小さくすることができるので、高さの
点でも底面積の点でも気液接触装置を非常にコンパクト
なものにすることができる。Furthermore, when three stages of corrugated contact units were used, a rectifying effect was found to average the gas wind velocity passing through the contact units. Since the gas-liquid contacting unit of the present invention is extremely efficient as described above,
It is sufficient that the height of one step of the contact unit is 30 to 100 mm, more preferably 50 to 60 mm. Therefore, even if the contact unit is a 3-stage specification, the gas-liquid contact part is at most 1
It becomes about 00 to 300 mm. According to the present invention, since the gas-liquid contact can be efficiently performed as described above, the area occupied by the contact unit itself can be reduced, and therefore the gas-liquid contact device can be provided in terms of height and bottom area. It can be very compact.
【００２２】さらに、接触ユニットを構成する立体編物
やスペーサーが軽量であるので、接触ユニットをハウジ
ングに入れてカートリッジ式にしておけばメンテナンス
も容易である。ハウジングの素材は、該立体編物が繊維
製で非常に軽量であるため、特別な機械的強度は必要な
く、耐食性のよい素材であれば特に限定されない。ハウ
ジングの形態も、ユニットの形態に応じて適宜選択され
る。Further, since the three-dimensional knitted fabric and the spacers constituting the contact unit are lightweight, maintenance can be facilitated by putting the contact unit in the housing and making it a cartridge type. The material of the housing is not particularly limited as long as the three-dimensional knitted fabric is made of fibers and is very lightweight, so that no special mechanical strength is required and the material has good corrosion resistance. The form of the housing is also appropriately selected according to the form of the unit.
【００２３】[0023]
【実施例】以下に実施例を挙げて具体的に説明するが、
本発明はこれらに限定されるものではない。実施例１ 厚さ 6.5ｍｍ、空隙率90％のポリエステル製立体編物を
図３のようなＶ字波形状に充填した３段の接触ユニット
を有する気液接触装置を作製した。ここで、接触ユニッ
ト１段の高さは50ｍｍ、ピッチ（隣接する山部間の距
離）は20ｍｍとした。またユニットのハウジングの素材
にはポリ塩化ビニルを使用した。ハウジングも含めた接
触ユニット底面積は0.0576ｍ2 である。上記の気液接触
装置を用いて、ＮＨ3 ガスのＨ2 ＳＯ4 による洗浄実験
とＨＣｌガスの水による洗浄実験を行なった。処理条件
と吸収効率の測定結果を表１に併せて示す。ガス濃度
は、検知管法による簡易測定で求めた。EXAMPLES The present invention will be specifically described below with reference to examples.
The present invention is not limited to these. Example 1 A gas-liquid contact device having a three-stage contact unit in which a three-dimensional knitted fabric made of polyester having a thickness of 6.5 mm and a porosity of 90% was filled in a V-shaped shape as shown in FIG. 3 was produced. Here, the height of one step of the contact unit was 50 mm, and the pitch (distance between adjacent peak portions) was 20 mm. Polyvinyl chloride was used as the material for the unit housing. The bottom area of the contact unit including the housing is 0.0576 m 2 . Using the above gas-liquid contact device, a cleaning experiment with NH 3 gas using H 2 SO 4 and a cleaning experiment using HCl gas with water were performed. Table 1 also shows the treatment conditions and the measurement results of the absorption efficiency. The gas concentration was obtained by simple measurement by the detector tube method.
【００２４】実施例２〜３および比較例１〜２ 図７に実施例２〜３および比較例１〜２の接触ユニット
断面該略図を示す。実施例２は高さ50ｍｍの立体編物を
垂直に列設した上に２枚の立体編物を水平に積層したも
のでユニット高は65ｍｍである。実施例３は立体編物を
高さ 100ｍｍになるようにＶ字波形状に列設した上に１
枚立体編物を水平に積層したもので、ユニット高は 10
7.5ｍｍである。比較例１は、ワイヤーメッシュと開口
率 9.7％の多孔板を図７のように組み合わせたもので接
触ユニットの高さは50ｍｍである。比較例２は実施例１
に用いたものと同じ立体編物を水平に６枚積層したもの
で、ユニット高は40ｍｍであった。 Examples 2 and 3 and Comparative Examples 1 and 2 FIG. 7 is a schematic cross-sectional view of contact units of Examples 2 and 3 and Comparative Examples 1 and 2. In Example 2, three-dimensional knitted fabrics having a height of 50 mm are vertically arranged, and two three-dimensional knitted fabrics are horizontally laminated, and the unit height is 65 mm. In the third embodiment, the three-dimensional knitted fabric is arranged in a V-wave shape so that the height is 100 mm.
This is a horizontal stack of three-dimensional knitted fabrics, and the unit height is 10
7.5 mm. In Comparative Example 1, a wire mesh and a perforated plate having an aperture ratio of 9.7% were combined as shown in FIG. 7, and the height of the contact unit was 50 mm. Comparative Example 2 is Example 1
The three-dimensional knitted fabric same as that used in Example 6 was horizontally laminated, and the unit height was 40 mm.
【００２５】各実施例、比較例とも図７中に示した接触
ユニット１段のみにて、アンモニアガス（ＮＨ3 ）の硫
酸（Ｈ2 ＳＯ4 ）による洗浄実験を行ない、ガス速度を
変化させた時の吸収効率及び圧力損失の測定結果を表１
に併記した。また圧力損失の結果を図８に示した。In each of the examples and the comparative examples, only one stage of the contact unit shown in FIG. 7 was used to conduct a cleaning experiment using ammonia gas (NH 3 ) with sulfuric acid (H 2 SO 4 ) to change the gas velocity. Table 1 shows the measurement results of absorption efficiency and pressure loss
Also described in. The results of pressure loss are shown in FIG.
【００２６】[0026]
【表１】 [Table 1]
【００２７】表１および図８の結果から、本発明による
立体編物充填タイプの接触ユニットを３段用いた場合、
ガス速度が大きくなっても極めて低い圧力損失しか示さ
ず、しかも非常に高い吸収効率を示すことがわかる。従
来法である比較例１は圧力損失が大きく、立体編物を水
平に使用した比較例２は、圧力損失は比較的小さいが吸
収効率が従来例より劣ることが明らかとなった。立体編
物を垂直に設けた実施例２は、吸収効率はかなり高いが
圧力損失が少し悪いこと、Ｖ字波形を１段しか設けない
実施例３は、圧力損失が小さいが吸収効率が劣ることが
わかった。From the results of Table 1 and FIG. 8, when the three-dimensional knitting filling type contact unit according to the present invention is used,
It can be seen that even if the gas velocity becomes large, only a very low pressure loss is exhibited, and also a very high absorption efficiency is exhibited. It was revealed that the comparative example 1 which is a conventional method has a large pressure loss, and the comparative example 2 in which the three-dimensional knit is used horizontally has a relatively small pressure loss but is inferior in absorption efficiency to the conventional example. In Example 2 in which the three-dimensional knitted fabric is provided vertically, the absorption efficiency is considerably high but the pressure loss is a little poor, and in Example 3 in which only one V-shaped waveform is provided, the pressure loss is small but the absorption efficiency is poor. all right.
【００２８】実施例４〜８ 実施例１に用いた立体編物を図５のように波形状に折り
畳んでポリプロピレン製立体網状体（見掛け厚さ15ｍ
ｍ，空隙率95〜96％）を介装した接触ユニットを作成し
た。接触ユニット１段の高さは50ｍｍ、波形のピッチは
37ｍｍとした。接触ユニット３段を各々直交するように
積層し、ポリ塩化ビニル製の 230ｍｍ× 230ｍｍ× 160
ｍｍのハウジングに入れ、このハウジング８個を縦２個
×横４個の並列にならべて、図１に示したような気液接
触装置に実際に組みこんだ。ハウジングの底面積は0.40
48ｍ2 である。この装置で表２に示す処理気体および液
体を用いて種々の条件での気液接触処理実験を行なっ
た。処理条件および吸収効率測定結果を表２に併記し
た。なお、ガス濃度は以下の方法で分析した精密測定値
である。 Examples 4 to 8 The three-dimensional knitted fabric used in Example 1 is folded in a wave shape as shown in FIG. 5 to form a polypropylene three-dimensional net body (apparent thickness: 15 m).
m, porosity 95-96%) was created. The height of one step of the contact unit is 50 mm, and the pitch of the corrugation is
It was 37 mm. The contact units are stacked so that they are orthogonal to each other.
It was put in a housing of 8 mm, and the eight housings were arranged side by side in a lengthwise direction of two and four in a horizontal direction, and actually assembled in a gas-liquid contact device as shown in FIG. The bottom area of the housing is 0.40
It is 48m 2 . Using this apparatus, gas-liquid contact treatment experiments were conducted under various conditions using the treatment gases and liquids shown in Table 2. Table 2 also shows the treatment conditions and the measurement results of the absorption efficiency. The gas concentration is a precision measurement value analyzed by the following method.
【００２９】ＨＣｌ：ＪＩＳ Ｋ０１０７のチオシアン
酸第二水銀法を用いて行なった。 ＮＨ3 ：ＪＩＳ Ｋ００９９のインドフェノール法を用
いて行なった。 ＳＯ2 ：ＪＩＳ Ｋ０１０３の沈殿滴定法を用いて行な
った。 ＨＦ ：ＪＩＳ Ｋ０１０５のランタン−アリザリンコ
ンプレクソン吸光光度法を用いて行なった。 Ｈ2 Ｓ：ＪＩＳ Ｋ０１０８のメチレンブルー吸光光度
法を用いて行なった。HCl: It was carried out by using the mercuric thiocyanate method of JIS K0107. NH 3: it was carried out using the India phenol method of JIS K0099. SO 2 : Performed using the precipitation titration method of JIS K0103. HF: It was performed using the lanthanum-alizarin complexon absorptiometry of JIS K0105. H 2 S: Methylene blue absorptiometry of JIS K0108 was used.
【００３０】[0030]
【表２】 [Table 2]
【００３１】表２より明らかな様に、種々の処理ガスお
よび洗浄液の組み合わせにおいて、スケールアップした
場合でも９６〜９９．８％もの高吸収効率を示すことが
わかる。また、圧力損失も低く抑えることが可能である
ことが明らかとなった。As is clear from Table 2, various combinations of the processing gas and the cleaning liquid show a high absorption efficiency of 96 to 99.8% even when scaled up. Moreover, it has been clarified that the pressure loss can be suppressed to a low level.
【００３２】[0032]
【発明の効果】本発明の気液接触ユニットは、繊維製の
立体編物を垂直ないしは略垂直方向、好ましくは山形、
谷形または波形状に充填した接触ユニットからなる気液
接触部を有しており、該立体編物上で偏流や逸流を起こ
すことなく非常に効率的にバブリングによる気液接触を
行なうことができる。このため、排ガス処理工程でガス
速度を増大させても、極めて低い圧力損失しか示さず、
しかも非常に高い吸収効率を示すものである。また接触
ユニットが軽量かつ小さいため充填塔をコンパクトにす
ることができ、メンテナンスも容易にできるようになっ
た。この気液接触ユニットは、有害成分や悪臭等を含む
排ガスを液体で洗浄する排ガス処理の他に、気体中の有
用成分を液体で回収する用途や、液体中の有害成分を気
体中へ移行させる排液処理、ならびに液体中の有用成分
を液体で回収する用途にも適用することができる。The gas-liquid contacting unit of the present invention comprises a three-dimensional knitted fabric made of fibers in a vertical or substantially vertical direction, preferably in a chevron shape,
It has a gas-liquid contact portion consisting of a contact unit filled in a valley shape or a wave shape, and it is possible to perform gas-liquid contact by bubbling very efficiently without causing uneven flow or escape on the three-dimensional knitted fabric. . Therefore, even if the gas velocity is increased in the exhaust gas treatment process, only a very low pressure loss is exhibited,
Moreover, it shows a very high absorption efficiency. In addition, since the contact unit is lightweight and small, the packed tower can be made compact and maintenance is facilitated. This gas-liquid contacting unit is used for recovering useful components in a gas as a liquid, and for transferring harmful components in a gas to a gas, in addition to exhaust gas treatment for cleaning an exhaust gas containing a harmful component or a bad odor with a liquid. It can also be applied to waste liquid treatment, and uses for recovering useful components in a liquid as a liquid.
【図１】本発明による気液接触装置の断面概略図であ
る。FIG. 1 is a schematic sectional view of a gas-liquid contact device according to the present invention.
【図２】立体編物のモデル説明図である。FIG. 2 is a model explanatory diagram of a three-dimensional knit.
【図３】本発明によるＶ字形の気液接触ユニットを３段
積層した時の斜視概略説明図である。FIG. 3 is a schematic perspective view of a V-shaped gas-liquid contact unit according to the present invention when three layers are stacked.
【図４】本発明による立設型気液接触ユニットを３段積
層した時の斜視概略説明図である。FIG. 4 is a schematic perspective view of three standing gas-liquid contact units according to the present invention, which are stacked.
【図５】本発明による立体網状体を介装した気液接触ユ
ニットを３段積層した時の斜視概略説明図である。FIG. 5 is a schematic perspective view of a gas-liquid contact unit having a three-dimensional net body according to the present invention, which is laminated in three stages.
【図６】接触ユニットの積層段数と吸収効率の関係を示
すグラフである。FIG. 6 is a graph showing the relationship between the number of stacked layers of the contact unit and the absorption efficiency.
【図７】実施例２，３および比較例１，２の接触ユニッ
トの断面概略図である。FIG. 7 is a schematic cross-sectional view of contact units of Examples 2 and 3 and Comparative Examples 1 and 2.
【図８】実施例１〜４および比較例１，２の気液接触装
置の圧力損失測定結果である。FIG. 8 shows pressure loss measurement results of the gas-liquid contact devices of Examples 1 to 4 and Comparative Examples 1 and 2.
１ 気液接触装置 ２ 気体供給用ブロア ３ 気液接触部 ４a,b,c 接触ユニット ５ 液体供給管 ６ スプレーノズル ７ ミストキャッチャー ８ 排出孔 ４１ 立体編物 ４２ 開口部 ４３a,b メッシュ編物シート ４４ 連結糸 ４５ ループ網目 ４６ ワイヤメッシュ状立体網状体 1 gas-liquid contact device 2 gas supply blower 3 gas-liquid contact part 4a, b, c contact unit 5 liquid supply pipe 6 spray nozzle 7 mist catcher 8 discharge hole 41 three-dimensional knit 42 opening 43a, b mesh knitted sheet 44 connecting yarn 45 loop mesh 46 wire mesh three-dimensional mesh
Claims (4)
触ユニットが、立体編物が垂直ないしは略垂直方向に多
数列設されたものであることを特徴とする気液接触ユニ
ット。1. A gas-liquid contact unit for contacting a dripping liquid with an ascending gas, wherein a plurality of three-dimensional knitted fabrics are arranged vertically or substantially vertically.
設、あるいは折り畳まれたものである請求項１に記載の
気液接触ユニット。2. The gas-liquid contact unit according to claim 1, wherein the three-dimensional knitted fabric is arranged in a mountain shape, a valley shape, a corrugated shape, or is folded.
立体網状体が介装されたものである請求項１または２に
記載の気液接触ユニット。3. The gas-liquid contact unit according to claim 1, wherein a coarse wire mesh-shaped three-dimensional net body is interposed between three-dimensional knitted fabrics.
触ユニットを単層または高さ方向に積層して用いること
を特徴とする気液接触装置。4. A gas-liquid contact device comprising the gas-liquid contact unit according to claim 1, which is used as a single layer or stacked in the height direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4212771A JPH07121357B2 (en) | 1991-08-20 | 1992-08-10 | Gas-liquid contact unit and gas-liquid contact device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23393791 | 1991-08-20 | ||
| JP3-233937 | 1991-08-20 | ||
| JP4212771A JPH07121357B2 (en) | 1991-08-20 | 1992-08-10 | Gas-liquid contact unit and gas-liquid contact device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06285357A true JPH06285357A (en) | 1994-10-11 |
| JPH07121357B2 JPH07121357B2 (en) | 1995-12-25 |
Family
ID=26519419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4212771A Expired - Lifetime JPH07121357B2 (en) | 1991-08-20 | 1992-08-10 | Gas-liquid contact unit and gas-liquid contact device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07121357B2 (en) |
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| EP3747539A4 (en) | 2018-01-30 | 2021-09-15 | Ihi Corporation | Filler, method for manufacturing same, and liquid film-forming structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4896451A (en) * | 1972-02-07 | 1973-12-10 | ||
| JPS5757165A (en) * | 1980-09-17 | 1982-04-06 | Furukawa Electric Co Ltd:The | Taping machine |
| JPS6279801A (en) * | 1985-10-04 | 1987-04-13 | Seta Kosan Kako Kk | Packing material for material and heat exchange tower |
-
1992
- 1992-08-10 JP JP4212771A patent/JPH07121357B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4896451A (en) * | 1972-02-07 | 1973-12-10 | ||
| JPS5757165A (en) * | 1980-09-17 | 1982-04-06 | Furukawa Electric Co Ltd:The | Taping machine |
| JPS6279801A (en) * | 1985-10-04 | 1987-04-13 | Seta Kosan Kako Kk | Packing material for material and heat exchange tower |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG82684A1 (en) * | 1999-03-01 | 2001-08-21 | Nagaoka Tadayoshi | Column packing and method for manufacturing the same |
| JP2009168413A (en) * | 2008-01-21 | 2009-07-30 | Panasonic Corp | Humidifier |
| JP2009198042A (en) * | 2008-02-20 | 2009-09-03 | Panasonic Corp | Humidifier |
| JP2009243703A (en) * | 2008-03-28 | 2009-10-22 | Fuji Koki Corp | Filter and its manufacturing method |
| JP2010148657A (en) * | 2008-12-25 | 2010-07-08 | Shizuokaken Koritsu Daigaku Hojin | Body mat |
| WO2013089035A1 (en) * | 2011-12-12 | 2013-06-20 | 日本リファイン株式会社 | Gas-liquid contact device, distillation device, and heat exchange device |
| JP2013121582A (en) * | 2011-12-12 | 2013-06-20 | Nippon Refine Kk | Gas-liquid contact device, distillation apparatus, and heat exchanger |
| US10076722B2 (en) | 2011-12-12 | 2018-09-18 | Nippon Refine Co., Ltd. | Gas-liquid contact device, distillation device, and heat exchange device |
| JP2013184104A (en) * | 2012-03-07 | 2013-09-19 | Shimizu Corp | Filler, filler unit, and air purifying apparatus |
| EP3067114A4 (en) * | 2014-01-27 | 2017-02-08 | Mitsubishi Heavy Industries, Ltd. | Gas-liquid contactor and co2 recovery device |
| US9919267B2 (en) | 2014-01-27 | 2018-03-20 | Mitsubishi Heavy Industries, Ltd. | Gas-liquid contactor and CO2 recovery device |
| KR20190093330A (en) * | 2018-02-01 | 2019-08-09 | (주)명성씨.엠.아이 | 3D mesh grid filter and scrubber comprising the same |
| KR20200060597A (en) * | 2018-11-21 | 2020-06-01 | 주식회사 강양에이치티에스 | Small washing dust collector for simultaneous removal of fine dust and harmful gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07121357B2 (en) | 1995-12-25 |
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