JPH0677641B2 - Porous filter for spray dryer - Google Patents
Porous filter for spray dryerInfo
- Publication number
- JPH0677641B2 JPH0677641B2 JP1317657A JP31765789A JPH0677641B2 JP H0677641 B2 JPH0677641 B2 JP H0677641B2 JP 1317657 A JP1317657 A JP 1317657A JP 31765789 A JP31765789 A JP 31765789A JP H0677641 B2 JPH0677641 B2 JP H0677641B2
- Authority
- JP
- Japan
- Prior art keywords
- porous filter
- filter
- fiber
- warp
- weft
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は噴霧乾燥装置の乾燥室を構成し、生成粉粒体と
ガスとの分離を行って粉粒体を回収するための通気性の
多孔質フィルタ−に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention constitutes a drying chamber of a spray dryer, and has a breathable property for recovering powder and granules by separating generated powder and granules from gas. It relates to a porous filter.
噴霧乾燥は、基本的には原液の噴霧、噴霧により生
じた微小液滴の乾燥、粉粒体製品の分離回収の３つの
機能を必須としていたが、最近では、多品種少量生産方
式や高純度製品の製造が要請され、噴霧，乾燥，分離回
収を同一の乾燥域で行うようにすると同時に、品種の切
り換えに応じ乾燥室を自在に取換えできる方法及び装置
（特開昭62−152501号公報）がある。Basically, spray drying had three essential functions: spraying the stock solution, drying the fine droplets produced by spraying, and separating and collecting the powder and granular products. A method and apparatus for producing a product, in which spraying, drying, separation and recovery are performed in the same drying area, and at the same time, the drying chamber can be freely replaced according to the type change (Japanese Patent Laid-Open No. 62-152501). ).
従来の方法及び装置は噴霧乾燥室を多孔質フィルタ−で
構成することにより、噴霧，乾燥，分離回収を同一の乾
燥域で行い、同時に乾燥室の取換えを容易にできるよう
にしたもので、極めて実用性の高いものである。In the conventional method and apparatus, the spray drying chamber is composed of a porous filter, so that spraying, drying, separation and recovery can be performed in the same drying area, and at the same time, the drying chamber can be easily replaced. It is extremely practical.
本発明者は、前記多孔質フィルタ−として短繊維（スパ
ンヤーン）の紡績糸による繊布をバッグ状に形成したも
のを使用し、この噴霧乾燥方法及び装置についてさらに
実験を重ねたところ、噴霧乾燥製品（粉体）中に繊布か
ら発生したケバが混入していること及び、このケバの大
半は、乾燥製品が多孔質フィルタ−に衝突接触すること
により発生し、乾燥装置の運転継続後多孔質フィルタ−
を洗浄し、これを再度使用する際にも発生することが確
認された。The present inventor uses, as the porous filter, a bag-shaped fiber cloth made of spun yarn of short fibers (spun yarn). Further experiments were carried out on this spray drying method and apparatus, and a spray dried product ( (Flour) is mixed with fluff generated from fiber cloth, and most of this fluff is generated when the dried product collides with and contacts the porous filter.
It was confirmed that this also occurs when the product is washed and used again.
上記ケバ混入は製品品質を著しく劣悪化するため、従来
のスパンヤーンの織布によるフィルタ−は噴霧乾燥用に
は不向きである。Since the above-mentioned fluff mixing significantly deteriorates the product quality, the conventional filter made of woven fabric of spun yarn is not suitable for spray drying.
また、織布が耐薬品性（特に耐酸性）に優れた繊維で形
成されたものでない場合には長時間の使用に耐えられ
ず、フィルタ−交換を頻繁に行わなければならないこと
や、従来の耐熱ナイロン繊維は噴霧乾燥製品や噴霧原液
の特性によっては耐久性が不十分であることが判明し
た。In addition, if the woven fabric is not made of fibers with excellent chemical resistance (particularly acid resistance), it cannot withstand long-term use, and it requires frequent filter replacement, and It has been found that the heat-resistant nylon fiber has insufficient durability depending on the properties of the spray-dried product and the undiluted solution.
さらに、上記噴霧乾燥装置では熱風送風量，フィルタ−
内外の圧力差，粉粒体の粒度などの運転条件によりフィ
ルタ−からの粉塵漏れが生じたり、短時間内にフィルタ
−の目詰まりにより圧力損失が過大となって安定，的確
な運転が継続できなくなるという問題点もあった。Further, in the above spray dryer, the hot air blowing amount, the filter-
Dust may leak from the filter due to operating conditions such as pressure difference between inside and outside, particle size of powder, etc., or the pressure loss may become excessive due to clogging of the filter within a short time, and stable and accurate operation can be continued. There was also the problem of disappearing.
本発明は、多孔質フィルタ−を長繊維のマルチフィラメ
ントによる織布で形成すると共に、該フィルタ−の通気
度及び目開きを適切な範囲に設定することにより上記ケ
バ発生，粉塵漏れ及びフィルタ−目詰まりの問題点を解
決し、前記マルチフィラメントを後記する特定の合成繊
維のマルチフィラメントとすることにより耐薬品性良好
な多孔質フィルタ−としたものである。According to the present invention, the porous filter is formed of a woven fabric of long-fiber multifilaments, and the air permeability and the mesh opening of the filter are set in an appropriate range so that the fluff generation, dust leakage, and filter mesh are prevented. A porous filter having good chemical resistance is obtained by solving the problem of clogging and using the multifilament of the specific synthetic fiber described later as the multifilament.
本発明は、バッグ状フィルタ−で形成した乾燥室内に原
液を微小液滴として噴霧する噴霧乾燥装置において、前
記バッグ状フィルタ−を長繊維のマルチフィラメントか
らなる経糸、緯糸による織布で形成し、前記経糸及び緯
糸を直径が15〜23μｍの単糸の集合体として繊度を100
〜400デニールの範囲に設定するとともに、前記織布の
繊維密度を25.4mm平方当たり経糸のマルチフィラメント
が170〜210本、緯糸のマルチフィラメントが60〜80本と
し、さらに、経糸をマルチフィラメントの１本又は並列
に並べた２本とし、緯糸を無撚又は弱撚のマルチフィラ
メントの１本とし、前記フィルタ−の通気度を0.7〜14c
c/cm2/sec、目開きを15〜80μｍとしたことを特徴とす
る噴霧乾燥装置用多孔質フィルタ−である。The present invention is a spray-drying device for spraying a stock solution as fine liquid droplets into a drying chamber formed by a bag-shaped filter, wherein the bag-shaped filter is formed of a warp composed of long-fiber multifilaments and a woven fabric of wefts, The warp and weft yarns are aggregated as single yarns with a diameter of 15 to 23 μm and have a fineness of 100.
The fiber density of the woven fabric is set to 170 to 210 multi-filaments of warp, 60 to 80 multi-filaments of weft per square of 25.4 mm, and the warp is 1 to 40 denier. Book or two arranged in parallel, the weft is one of untwisted or weakly twisted multifilaments, and the air permeability of the filter is 0.7 to 14c.
It is a porous filter for a spray dryer, which has a c / cm 2 / sec and an opening of 15 to 80 μm.
本発明においては、多孔質フィルタ−の通気度を0.7〜1
4cc/cm2/sec、好ましくは1.0〜８cc/cm2/secとするが、
この通気度の範囲は、多孔質フィルタ−に乾燥製品粉粒
体の強い付着又は堆積を形成させない範囲であり、噴霧
乾燥装置の運転が安定する。特に、通気度を低く安定さ
せることで、多孔質フィルタ−への粉塵付着が抑えら
れ、かつ粉塵漏れが防止できるのである。通気度が0.7c
c/cm2/sec未満の場合には、噴霧乾燥運転に際して内外
圧力差が大きくなり過ぎ、安定した運転ができない。一
方、通気度が15cc/cm2/secを越えると、多孔質フィルタ
−からの粉塵漏れが生じる。In the present invention, the porous filter has an air permeability of 0.7 to 1
4cc / cm 2 / sec, preferably 1.0-8cc / cm 2 / sec,
This range of the air permeability is a range in which the strong adhesion or the deposition of the dry product powder particles is not formed on the porous filter, and the operation of the spray dryer is stabilized. In particular, by stabilizing the air permeability at a low level, dust adhesion to the porous filter can be suppressed and dust leakage can be prevented. Air permeability is 0.7c
If it is less than c / cm 2 / sec, the pressure difference between the inside and outside of the spray drying operation becomes too large, and stable operation cannot be performed. On the other hand, if the air permeability exceeds 15 cc / cm 2 / sec, dust will leak from the porous filter.
また、本発明の多孔質フィルタ−の目開きについては、
基本的には前記粉粒体の形状・大きさに関係するもので
あるが、種々検討の結果、多孔質フィルタ−の目開きが
15〜80μｍ、好ましくは20〜50μｍとすることにより粉
塵漏れが防止される。多孔質フィルタ−の目開きが10μ
ｍ未満、特に１μｍ以下の場合、内外圧力差が大きくな
り過ぎ安定した噴霧乾燥運転ができず、一方、目開きが
100μｍを超えると粉塵漏れが生じる。Further, regarding the openings of the porous filter of the present invention,
Basically, it is related to the shape and size of the above-mentioned powder and granules, but as a result of various studies, the opening of the porous filter
By setting the thickness to 15 to 80 μm, preferably 20 to 50 μm, dust leakage is prevented. Porous filter-opening is 10μ
If it is less than m, especially 1 μm or less, the pressure difference between the inside and the outside becomes too large to perform stable spray drying operation, while the opening
If it exceeds 100 μm, dust will leak.
そして、マルチフィラメントの加撚の強弱や織組織（平
織，綾織等）を変えることにより、通気度あるいは目開
きを所望範囲に設定することができ、フィルタ−の粉塵
漏れやフィルタ−が早期に目詰まりするトラブルを的確
に防止できるものである。By changing the twisting strength of the multifilament or the weaving structure (plain weave, twill weave, etc.), the air permeability or the mesh opening can be set in a desired range, and the dust leakage of the filter and the filter can be quickly achieved. The problem of clogging can be accurately prevented.
上記のように、噴霧乾燥装置用の多孔質フィルタ−では
取扱う原液や乾燥製品の化学的性質を考慮する必要があ
り、特に酸性のものを扱う場合には従来の耐熱ナイロン
等では問題があるので、本発明では耐酸性フィルタ−を
ポリフェニレンサルファイド繊維（PPS繊維）のマルチ
フィラメント，ポリテトラフルオロエチレン繊維（PTFE
繊維）のマルチフィラメントのいずれか少なくとも一方
により形成するものである。噴霧乾燥室内に導入される
熱風の温度は通常200〜280℃程度とかなり高温であり、
フィルタ−を通過する温度も130〜170℃と高温であるた
め、噴霧乾燥装置用の多孔質フィルタ−はこれに耐えら
れるものでなくてはならず、また、粉粒体が常に付着，
堆積するから、連続使用するためには良剥離性のもので
あることが望ましい。この多孔質フィルタ−は着脱自在
で随時取り替え可能に取付けられ、対象となる製品粉粒
体とガスとの分離、即ち粉粒体の回収を行うものであ
る。As described above, it is necessary to take into consideration the chemical properties of the stock solution and the dried product to be handled in the porous filter for the spray dryer, and especially when handling acidic ones, there is a problem with conventional heat-resistant nylon etc. In the present invention, the acid-resistant filter is a multifilament of polyphenylene sulfide fiber (PPS fiber), polytetrafluoroethylene fiber (PTFE fiber).
It is formed by at least one of the multifilaments of (fiber). The temperature of the hot air introduced into the spray drying chamber is usually as high as 200-280 ° C,
Since the temperature passing through the filter is as high as 130 to 170 ° C., the porous filter for the spray dryer must be able to withstand this, and the powder and granules are always attached,
Since it accumulates, it is desirable that it has good peelability for continuous use. This porous filter is detachably mounted so that it can be replaced at any time, and it separates the target product powder and gas from the gas, that is, collects the powder.
前記PPS繊維,PTFE繊維はこのような耐熱性，良剥離性
（非粘着性）さらには耐摩耗性にも優れているので、こ
の種の多孔質フィルタ−の構成素材として極めて好適で
あり、これらに次ぐものとして耐熱ナイロン（芳香族ポ
リアミド），ポリエステル（例えばポリエチレンテレフ
タレート），ポリイミド，ポリアミド（例えばナイロン
6,ナイロン66）等を用いることができる。Since the PPS fiber and PTFE fiber are excellent in such heat resistance, good peelability (non-adhesiveness) and abrasion resistance, they are extremely suitable as a constituent material of this kind of porous filter. Next to heat resistant nylon (aromatic polyamide), polyester (eg polyethylene terephthalate), polyimide, polyamide (eg nylon)
6, nylon 66) and the like can be used.
さらに本発明では、運転時の通気状態においてバッグ状
の多孔質フィルタ−の具体的形状を、回転円盤型噴霧装
置を採用する場合は天井部が平面又は逆ロート状，圧力
ノズル又は２流体ノズルで噴霧する場合は天井部がロー
ト状，側面部が円筒状，底部がロート状を呈し、ロート
状底部の傾斜角度が30〜150゜、好ましくは50〜120゜と
なるように形成する。このように形成すれば、ロート状
底部を下方から支持する必要もなく上記形状を安定して
保持できる。また、この形状は、多孔質フィルタ−の天
井部を噴霧乾燥装置のヘッド部（ここに噴霧ノズル，噴
霧円盤等の噴霧手段が設置される。）と接続・固定し、
多孔質フィルタ−の底部を粉体取出口に接続・固定する
ことにより、常に安定して維持される。Further, in the present invention, the specific shape of the bag-shaped porous filter in the ventilated state during operation is such that, when a rotating disk type spraying device is adopted, the ceiling is flat or reverse funnel-shaped, a pressure nozzle or a two-fluid nozzle. When spraying, the ceiling is funnel-shaped, the side surface is cylindrical, and the bottom is funnel-shaped, and the funnel-shaped bottom is inclined at an angle of 30 to 150 °, preferably 50 to 120 °. If formed in this way, the above shape can be stably maintained without the need to support the funnel-shaped bottom portion from below. Moreover, this shape connects and fixes the ceiling part of the porous filter to the head part of the spray dryer (where spray means such as spray nozzles and spray disks are installed).
By connecting and fixing the bottom of the porous filter to the powder outlet, it is always maintained stably.
この場合、多孔質フィルタ−全体をPPS繊維により、又
はPTFE繊維により形成することができ、織布の経糸，緯
糸の一方をPPS繊維とし、他方をPTFE繊維とすることも
できるし、バッグ状フィルタ−の上方部，下方部の一方
をPPS繊維で、他方をPTFE繊維で形成することもでき
る。In this case, the entire porous filter can be formed of PPS fiber or PTFE fiber, one of the warp and weft of the woven fabric can be PPS fiber, and the other can be PTFE fiber. It is also possible to form one of the upper part and the lower part of − with PPS fiber and the other with PTFE fiber.
多孔質フィルタ−を長繊維のマルチフィラメントによる
織布で袋状に形成すると共に、フィルタ−の通気度，目
開きを前記所定範囲に設定したので、噴霧乾燥装置運転
中にケバが発生することはなくなり、しかも粉塵漏れ，
フィルタ−目詰まりも殆ど発生しないものである。Since the porous filter was formed into a bag shape with a woven fabric of long-fiber multifilaments, and the air permeability and opening of the filter were set within the above-mentioned predetermined ranges, fluff was not generated during the operation of the spray dryer. Disappeared, and moreover, dust leakage,
The filter-clogging hardly occurs.
また、マルチフィラメントをPPS繊維又はポリテトラフ
ルオロエチレン繊維とすることにより耐薬品性，耐熱
性，耐スチーム性，粉体剥離性，耐摩耗性に優れた多孔
質フィルタ−となり得るものである。Further, by using PPS fiber or polytetrafluoroethylene fiber as the multifilament, a porous filter having excellent chemical resistance, heat resistance, steam resistance, powder exfoliation property, and abrasion resistance can be obtained.
さらに、マルチフィラメントの繊度すなわち太さ，繊維
密度等を前記所定範囲内に設定することにより容易に、
多孔質フィルタ−の通気度，目開きを上記所定範囲に設
定することが可能となり、織布の実質的全面をフィルタ
−として機能させることができる。Furthermore, by setting the fineness of the multifilament, that is, the thickness, the fiber density, etc. within the predetermined range, the
The air permeability and mesh size of the porous filter can be set within the above-mentioned predetermined ranges, and the substantially entire surface of the woven fabric can function as a filter.
以下、本発明を実施例に基づいて更に詳細に説明する
が、本発明はこの実施例に限られるものではない。Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.
第１図は運転時の本発明の織布による多孔質フィルタ−
の形状を示す説明図で、この例では天井部１は平面状
で、図示しない噴霧乾燥装置のヘッド部に接続・固定す
るための接続部２を有している。多孔質フィルタ−の側
面部３は円筒状を呈するとともに、底部４はロート状を
呈しており、底部４はその下端部５が図示しない噴霧乾
燥装置の粉体取出口に接続・固定されている。多孔質フ
ィルタ−の肩部、即ち天井部１と側面部３の接続部分に
はフック６が設けられ、噴霧乾燥装置の上部固定部によ
り吊り下げられる。FIG. 1 shows a porous filter made of the woven fabric of the present invention during operation.
In this example, the ceiling portion 1 is flat and has a connecting portion 2 for connecting and fixing to a head portion of a spray drying device (not shown). The side surface portion 3 of the porous filter has a cylindrical shape, and the bottom portion 4 has a funnel shape. The bottom portion 4 of the bottom portion 4 is connected and fixed to a powder outlet of a spray dryer (not shown). . A hook 6 is provided on the shoulder portion of the porous filter, that is, the connecting portion between the ceiling portion 1 and the side surface portion 3, and is hung by the upper fixing portion of the spray dryer.
なお、ロート状底部部４の傾斜角度αは約50゜であり、
上記の如き多孔質フィルタ−の形状は、多孔質フィルタ
−の内部の圧力を外部圧に対して通常10mm H2O以上と
することで保持される。The inclination angle α of the funnel-shaped bottom part 4 is about 50 °,
The shape of the porous filter as described above is maintained by setting the internal pressure of the porous filter to 10 mm H 2 O or more with respect to the external pressure.
各種繊維のマルチフィラメントによる織布を用いた多孔
質フィルタ−で乾燥室を構成し、下記の条件で噴霧乾燥
を行い、フィルタ−特性，フィルタ−からの粉塵漏れの
有無及び乾燥製品へのケバ混入の有無等を調べた。A drying chamber is composed of a porous filter that uses a woven fabric of multifilaments of various fibers, and spray drying is performed under the following conditions. Filter characteristics, dust leakage from the filter, and fluff mixed into dried products. The presence or absence of
比較例として、従来のスパンヤーン繊維による織布を用
いて同様の試験を行った。As a comparative example, the same test was conducted using a conventional woven fabric of spun yarn fibers.
1.噴霧乾燥条件 噴霧乾燥された粉粒体の平均粒子径…10〜200μｍ 熱風入口温度…200〜250℃ 送風量…1000〜1500m3/hr 2.結 果 結果を第１表に示す。1. Spray drying conditions Average particle diameter of spray dried powder and granules: 10 to 200 μm Hot air inlet temperature: 200 to 250 ° C. Air flow rate: 1000 to 1500 m 3 / hr 2. Results are shown in Table 1.
なお、多孔質フィルタ−の通気度は、JISL1096のＡ法に
基づいて測定した。すなわち、フラジール形試験機を用
い、円筒の一端に織布の試験片を取り付けた後、加減抵
抗器によって傾斜形気圧計が水柱1.27cm（124.5Pa）の
圧力を示すように吸込ファンを調整し、そのときの垂直
形気圧計の示す圧力と、使用した空気孔の種類とから、
試験機に付属の表によって試験片を通過する空気量（cc
/cm2/sec）を求め、これを通気度とした。The air permeability of the porous filter was measured in accordance with JIS L1096 method A. That is, using a Frazier type tester, after attaching a woven fabric test piece to one end of the cylinder, adjust the suction fan so that the tilt type barometer shows a pressure of 1.27 cm (124.5 Pa) of water column with a resistance adjuster. From the pressure indicated by the vertical barometer at that time and the type of air holes used,
The amount of air that passes through the test piece (cc
/ cm 2 / sec) was determined and was used as the air permeability.
一方、多孔質フィルタ−の目開きは、顕微鏡下での計測
により求めた。織布の間隙を通過できる最大球状粒子径
を本発明では目開きとした。すなわち、観測できる目開
きの短径部分の最大値を採用した。On the other hand, the opening of the porous filter was determined by measurement under a microscope. In the present invention, the maximum spherical particle size that can pass through the gap of the woven cloth is the mesh size. That is, the maximum value of the minor axis portion of the observable mesh was adopted.
また、乾燥製品中へのケバ混入の有無については、噴霧
乾燥装置の運転中、適宜に微粉体乾燥製品をサンプリン
グすると共に、運転を停止し多孔質フィルタ−への付着
微粉体を払い落とす時に回収される微粉体をサンプリン
グし、顕微鏡観察により調査した。In addition, regarding the presence or absence of fluff in the dried product, the fine powder dried product is appropriately sampled during the operation of the spray dryer, and the operation is stopped to collect the fine powder adhering to the porous filter. The fine powder produced was sampled and examined by microscopic observation.
第１表に示すように、本発明の多孔質フィルタ−では長
時間運転及び、前記付着微粉体払い落としを行ったにも
拘らず、ケバ混入は全く認められなかった。 As shown in Table 1, in the porous filter of the present invention, no fluff was found at all, even though the porous filter of the present invention was operated for a long time and the adhered fine powder was removed.
これに対し、従来のスパンヤーンの繊維を適用した多孔
質フィルタ−（試験番号10,11）では乾燥装置運転開始
して間もない間、ケバ混入が発生した。On the other hand, in the conventional porous filter to which the fiber of the spun yarn was applied (Test Nos. 10 and 11), fluff mixed in immediately after the operation of the drying device was started.
また、第１表から、マルチフィラメントの織布からなり
前記特定範囲の通気度及び目開きを有する多孔質フィル
タ−を用いた場合には、ケバ混入が発生せず、圧力損失
もそれ程大きくならない範囲で粉塵漏れが防止できるこ
と及び、マルチフィラメントの素材としてPPS又はPTFE
を適用することにより高性能で耐久性に優れた多孔質フ
ィルタ−が得られることがわかる。Further, from Table 1, in the case where a porous filter made of a multifilament woven fabric and having an air permeability and an opening in the specific range is used, a fluff mixture does not occur and a pressure loss is not so large. Dust leakage can be prevented with PPS or PTFE as the material of the multifilament.
It can be seen that a high performance and excellent durability porous filter can be obtained by applying.
以上説明した通り本発明によれば、噴霧乾燥室を形成す
るバッグ状の多孔質フィルタ−を長繊維のマルチフィラ
メントからなる経糸，緯糸による織布で形成すると共
に、フィルタ−の通気度，目開きを所定範囲に設定した
ので、ケバが混入しない良質の乾燥製品を得ることがで
き、フィルタ−の目詰まりや粉塵漏れを発生せず噴霧乾
燥を長時間安定して継続することができるものである。
また、マルチフィラメントをPPS繊維又はPTFE繊維とす
ることにより多孔質フィルタ−の耐久性が向上し、これ
を頻繁に交換する必要もなくなる効果がある。As described above, according to the present invention, the bag-shaped porous filter forming the spray-drying chamber is formed of the woven fabric of warp and weft made of multifilaments of long fibers, and the air permeability and opening of the filter are increased. Since it is set to a predetermined range, it is possible to obtain a high-quality dry product that does not mix fluff, and it is possible to continue spray drying stably for a long time without causing filter clogging or dust leakage. .
Further, the use of PPS fiber or PTFE fiber as the multifilament improves the durability of the porous filter, and there is an effect that it is not necessary to replace the porous filter frequently.
第１図は、本発明の実施例に係る多孔質フィルタ−の形
状を示す説明図である。 １……天井部、２……接続部、３……側面部、４……底
部、５……下端部、６……フック。FIG. 1 is an explanatory view showing the shape of a porous filter according to an embodiment of the present invention. 1 ... Ceiling part, 2 ... Connection part, 3 ... Side part, 4 ... Bottom part, 5 ... Bottom part, 6 ... Hook.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 弘毅 東京都中央区日本橋１丁目13番１号 ティ ーディーケイ株式会社内 (72)発明者 中尾 善宣 大阪府大阪市北区芝田１丁目４番８号 中 尾フイルター工業株式会社内 (56)参考文献 特開 昭62−152501（ＪＰ，Ａ) 大野長太郎「除じん・集じんの理論と実 際」（昭53−２−20）株式会社オーム社 Ｐ．85−87 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hiroki Takahashi 1-13-1 Nihonbashi, Chuo-ku, Tokyo TDC Corporation (72) Yoshinobu Nakao 1-4-8 Shibata, Kita-ku, Osaka-shi, Osaka Nakao Filter Industry Co., Ltd. (56) Reference Japanese Unexamined Patent Publication No. 62-152501 (JP, A) Chotaro Ohno "Theory and practice of dust removal and dust collection" (Sho 53-2-20) Ohmsha P ． 85-87
Claims (3)
原液を微小液滴として噴霧する噴霧乾燥装置において、
前記バッグ状フィルタ−を長繊維のマルチフィラメント
からなる経糸、緯糸による織布で形成し、前記経糸及び
緯糸を直径が15〜23μｍの単糸の集合体として繊度を10
0〜400デニールの範囲に設定するとともに、前記織布の
繊維密度を25.4mm平方当たり経糸のマルチフィラメント
が170〜210本、緯糸のマルチフィラメントが60〜80本と
し、さらに、経糸をマルチフィラメントの１本又は並列
に並べた２本とし、緯糸を無撚又は弱撚のマルチフィラ
メントの１本とし、前記フィルタ−の通気度を0.7〜14c
c/cm2/sec、目開きを15〜80μｍとしたことを特徴とす
る噴霧乾燥装置用多孔質フィルタ−。1. A spray-drying device for spraying a stock solution as fine droplets into a drying chamber formed by a bag-shaped filter,
The bag-shaped filter is formed of a woven fabric of warp yarns and weft yarns composed of long-fiber multifilaments, and the warp yarns and the weft yarns are aggregates of single yarns having a diameter of 15 to 23 μm and have a fineness of 10
While setting the range of 0 to 400 denier, the fiber density of the woven fabric is 170 to 210 multifilaments of warp per 25.4 mm square, 60 to 80 multifilaments of weft, and further, the warp of multifilament is One or two arranged in parallel, the weft is one of untwisted or weakly twisted multifilaments, and the air permeability of the filter is 0.7 to 14c.
A porous filter for a spray dryer, which has a c / cm 2 / sec and an opening of 15 to 80 μm.
も一部をポリフェニレンサルファイド繊維又はポリテト
ラフルオロエチレン繊維とした請求項１記載の噴霧乾燥
装置用多孔質フィルタ−。2. A porous filter for a spray dryer according to claim 1, wherein at least a part of the warp and / or the weft of the woven fabric is made of polyphenylene sulfide fiber or polytetrafluoroethylene fiber.
部をポリフェニレンサルファイド繊維又はポリテトラフ
ルオロエチレン繊維の経糸と緯糸で形成した請求項１記
載の噴霧乾燥装置用多孔質フィルタ−。3. The porous filter for a spray dryer according to claim 1, wherein the upper part or the lower part of the bag-shaped filter is formed of warp and weft of polyphenylene sulfide fiber or polytetrafluoroethylene fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1317657A JPH0677641B2 (en) | 1989-12-08 | 1989-12-08 | Porous filter for spray dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1317657A JPH0677641B2 (en) | 1989-12-08 | 1989-12-08 | Porous filter for spray dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03181301A JPH03181301A (en) | 1991-08-07 |
| JPH0677641B2 true JPH0677641B2 (en) | 1994-10-05 |
Family
ID=18090585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1317657A Expired - Lifetime JPH0677641B2 (en) | 1989-12-08 | 1989-12-08 | Porous filter for spray dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677641B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010234607B2 (en) | 2009-04-09 | 2014-01-16 | Entegrion, Inc | Spray-dried blood products and methods of making same |
| US8407912B2 (en) | 2010-09-16 | 2013-04-02 | Velico Medical, Inc. | Spray dried human plasma |
| US20110142885A1 (en) | 2009-09-16 | 2011-06-16 | Velico Medical, Inc. | Spray-dried human plasma |
| EP2745921A3 (en) | 2010-10-29 | 2014-10-01 | Velico Medical, Inc. | System and Method for Spray Drying a Liquid |
| US20140083628A1 (en) | 2012-09-27 | 2014-03-27 | Velico Medical, Inc. | Spray drier assembly for automated spray drying |
| US9561184B2 (en) | 2014-09-19 | 2017-02-07 | Velico Medical, Inc. | Methods and systems for multi-stage drying of plasma |
| US11841189B1 (en) | 2022-09-15 | 2023-12-12 | Velico Medical, Inc. | Disposable for a spray drying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0675641B2 (en) * | 1985-12-27 | 1994-09-28 | ティーディーケイ株式会社 | Spray drying method and device |
-
1989
- 1989-12-08 JP JP1317657A patent/JPH0677641B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 大野長太郎「除じん・集じんの理論と実際」（昭５３−２−２０）株式会社オーム社Ｐ．８５−８７ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03181301A (en) | 1991-08-07 |
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