JPH02184311A - Method for cleaning filter and filter device - Google Patents
Method for cleaning filter and filter deviceInfo
- Publication number
- JPH02184311A JPH02184311A JP341189A JP341189A JPH02184311A JP H02184311 A JPH02184311 A JP H02184311A JP 341189 A JP341189 A JP 341189A JP 341189 A JP341189 A JP 341189A JP H02184311 A JPH02184311 A JP H02184311A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- cleaning
- filter device
- present
- polyphenylene sulfide
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 21
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 18
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 18
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 claims abstract description 13
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003960 organic solvent Substances 0.000 claims description 18
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract description 6
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 abstract description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- -1 polyphenylene Polymers 0.000 abstract description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract description 3
- 229920000265 Polyparaphenylene Polymers 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 235000019645 odor Nutrition 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004063 acid-resistant material Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000004305 biphenyl Chemical group 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 150000008282 halocarbons Chemical group 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003457 sulfones Chemical group 0.000 description 1
- 125000006836 terphenylene group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5009—Organic solvents containing phosphorus, sulfur or silicon, e.g. dimethylsulfoxide
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、フィルターおよびフィルター装置の洗浄方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a filter and a method for cleaning a filter device.
［従来の技術］
一般に、有機高分子からなるポリマは、フィルム、繊維
等に成型される前にフィルターで濾過されるが、その濾
過に使用されるフィルターは、ポリマを所定量濾過した
後、洗浄されて再使用されている。[Prior Art] Generally, polymers made of organic polymers are filtered before being molded into films, fibers, etc., but the filters used for this filtration are washed after filtering a predetermined amount of polymer. and are being reused.
このフィルターの再使用に際してなされるフィルターの
洗浄方法としては、アルカリ溶融塩による洗浄、溶剤に
よる洗浄などが一般的に知られている。特に、ポリフェ
ニレンスルフィド（以下、ＰＰＳと略することがある）
の付着したフィルターの洗浄法としては、特開昭５８−
３６１５号公報が知られている。As methods for cleaning the filter when reusing the filter, cleaning with a molten alkali salt, cleaning with a solvent, etc. are generally known. In particular, polyphenylene sulfide (hereinafter sometimes abbreviated as PPS)
As a method for cleaning filters with
No. 3615 is known.
［発明が解決しようとする課題］
しかし、ポリフェニレンスルフィドを主成分とするポリ
マは、耐薬品性が良好でアルカリ溶融塩には溶解しない
。また有機溶剤として１，３−ジメチル−２−イミダゾ
リジノンを用い２６０°Ｃ以上に加熱することにより部
分的に溶解させることは可能であるがフィルター内部に
詰まったポリマの溶解洗浄のように長時間の加熱が必要
な場合は、」−９３−ジメチル−２−イミダゾリジノン
が分解しＰＰＳに対する溶解力が低下するため実用上適
用が困難である。また、Ｐ Ｉ） Ｓを主成分とするポ
リマを硫化アルカリおよび有機溶剤中で加熱洗浄する方
法は、Ｐ Ｐ Ｓの分解反応に伴う悪臭のため洗浄後の
フィルター等の処理や洗浄液の処理等を密閉下で行なわ
なければならず取り扱い性に劣−〕でいる。[Problems to be Solved by the Invention] However, a polymer containing polyphenylene sulfide as a main component has good chemical resistance and does not dissolve in alkali molten salt. It is also possible to partially dissolve 1,3-dimethyl-2-imidazolidinone as an organic solvent by heating it to 260°C or higher, but it is difficult to dissolve and clean the polymer clogged inside a filter. If heating for a period of time is required, the -93-dimethyl-2-imidazolidinone decomposes and its ability to dissolve PPS decreases, making practical application difficult. In addition, in the method of heating and cleaning polymers whose main component is PI)S in alkali sulfide and organic solvents, the treatment of filters, etc. after cleaning and the treatment of cleaning solutions are required due to the bad odor associated with the decomposition reaction of PPS. It must be done under closed conditions and is difficult to handle.
本発明は、かかる問題点を解決して、フィルターおよび
フィルター装置の洗浄性に優れかつ悪臭の発生の極めて
少なく、しかも常温付近での処理が可能なフィルターお
よびフィルター装置の洗浄方法を提供することである。The present invention solves these problems by providing a method for cleaning filters and filter devices that has excellent cleaning properties, generates extremely little odor, and can be processed at around room temperature. be.
１課題を解決するための手段］
本発明は、前記課題を解決するため、ポリフェニレンス
ルフィドを主成分とするポリマの付着したフィルターま
たはフィルター装置をクロロスルホン酸を含有する有機
溶剤中で処理することを特徴とする洗浄方法に関するも
のである。1. Means for Solving the Problems] In order to solve the above problems, the present invention provides a method of treating a filter or a filter device to which a polymer containing polyphenylene sulfide as a main component is attached in an organic solvent containing chlorosulfonic acid. The present invention relates to a characteristic cleaning method.
本発明において、ポリフェニレンスルフィドとは、繰り
返しく１１位の７０モル％以上が構造式＋ｓ 汁、
で示される構成単位からなる重合体をいう。また、繰り
返し単位の３０モル％未満であれは共重合可能なスルフ
ィド結合を含有する１１′！位が含まれていても差し支
えない。繰り返し単位の３０モル％未満の繰り返し単位
としては、例えは、３官能単位、エーテル単位、スルホ
ン単位、ケトン単位、メタ結合単位、アルキル基等の置
換基を有するアリール単位、ビフェニル単位、ターフェ
ニレン単位、ビニレン単位、カーボネート単位などが具
体例としてあげられ、このうち］一つまたは２つ以上共
存させて構成することができる。この場合、該構成単位
は、ランダム共重合、ブロック共重合いずれの形態でも
差し支えない。In the present invention, polyphenylene sulfide means that 70 mol% or more of the repeating 11th position has the structural formula + s,
Refers to a polymer consisting of the structural units shown below. In addition, if less than 30 mol% of the repeating units contain a copolymerizable sulfide bond, 11'! There is no problem even if the number is included. Examples of repeating units of less than 30 mol% of repeating units include trifunctional units, ether units, sulfone units, ketone units, meta bond units, aryl units having substituents such as alkyl groups, biphenyl units, and terphenylene units. , a vinylene unit, a carbonate unit, etc., and one or more of these units can be made to coexist. In this case, the structural unit may be either a random copolymer or a block copolymer.
また、ポリフェニレンスルフィドを主成分とするポリマ
とは、前記ポリフェニレンスルフィドを５０重量％以上
含有している有機高分子体またはその混合物で無機微粒
子を含有していてもよい。The polymer containing polyphenylene sulfide as a main component is an organic polymer containing 50% by weight or more of polyphenylene sulfide or a mixture thereof, and may also contain inorganic fine particles.
本発明における有機溶剤は、水辺外の有機溶剤であれば
何でもかまわないが本発明の効果をより明確に発現させ
るためには、ハロゲン化炭化水素ま−たは含窒素系化合
物であることが望ましい。このような有機溶剤の例とし
ては、ジクロロエタン、クロロホルム、トリクロロエタ
ンおよびピリジン等が挙げられる。The organic solvent used in the present invention may be any organic solvent as long as it is not used near water, but in order to more clearly exhibit the effects of the present invention, it is preferably a halogenated hydrocarbon or a nitrogen-containing compound. . Examples of such organic solvents include dichloroethane, chloroform, trichloroethane, pyridine, and the like.
また、本発明で用いられる有機溶剤中のカールフィッシ
ャー法で得られる水分含有量は、３０ｐｐｍ以下、好ま
しくは１０ｐ’ｐｍ以下、さらに好ましくは５ｐｐｍ以
下であることが望ましい。特に、本発明のフィルターま
たはフィルター装置をクロロスルホン酸を含有する有機
溶剤中で処理する際に、モレキュラシーブを該有機溶剤
中に、１〜６０重量％、好ましくは、５〜２０重量％含
有させておくことが本発明の効果をより明確に発現させ
るうえで有効である。Further, it is desirable that the water content obtained by the Karl Fischer method in the organic solvent used in the present invention is 30 ppm or less, preferably 10 p'pm or less, and more preferably 5 ppm or less. In particular, when the filter or filter device of the present invention is treated in an organic solvent containing chlorosulfonic acid, the molecular sieve is contained in the organic solvent in an amount of 1 to 60% by weight, preferably 5 to 20% by weight. It is effective to bring out the effects of the present invention more clearly.
本発明において有機溶剤中のクロロスルホン酸の含有量
は、３〜５０重量％、好ましくは、５〜３０重量％、更
に好ましくは、５〜１５重量％であることが望ましい。In the present invention, the content of chlorosulfonic acid in the organic solvent is preferably 3 to 50% by weight, preferably 5 to 30% by weight, and more preferably 5 to 15% by weight.
本発明において、ポリフェニレンスルフィドを主成分と
するポリマの付着したフィルターまたはフィルター装置
を洗浄する際のクロロスルホン酸と有機溶剤からなる洗
浄液の温度は、通常、７０００以下、より好ましくは、
１０〜５０°Ｃの範囲内で処理されることが望ましいが
、前記温度範囲以上に加熱されてもかまわない。In the present invention, the temperature of the cleaning solution consisting of chlorosulfonic acid and an organic solvent when cleaning a filter or filter device to which a polymer mainly composed of polyphenylene sulfide is attached is usually 7000 or less, more preferably,
Although it is desirable that the treatment be carried out within the range of 10 to 50°C, it may be heated above the above temperature range.
本発明のフィルターまたはフィルター装置を、本発明の
方法にて洗浄する際に超音波を併用して処理する方法が
本発明の効果をより明確に発現させるうえに有効である
。A method in which the filter or filter device of the present invention is cleaned using the method of the present invention in combination with ultrasonic waves is effective in bringing out the effects of the present invention more clearly.
また、本発明のクロロスルホン酸を含有する有機溶剤の
使用重量としては、対象とするＰＰＳを主成分とするポ
リマの重量の３倍以」ユが好ましく、より好ましくは６
倍以上である。Furthermore, the weight of the organic solvent containing chlorosulfonic acid of the present invention is preferably at least 3 times the weight of the target PPS-based polymer, more preferably 6.
That's more than double that.
本発明の対象とするフィルターとは、高温下で耐アルカ
リ、耐酸性のある材料、特に金属が好ましく、ステンレ
スチール等からなる材料を素材とするものが好ましい。The filter targeted by the present invention is preferably made of a material that is resistant to alkali and acid at high temperatures, particularly metal, and preferably made of a material such as stainless steel.
またその形体としては、小粒子を焼結したポーラスメタ
ル状のものや、繊維状金属をフェルト状に加工したフィ
ルターあるいは一部焼結した繊維状物が挙げられ、その
間に１径としては、好ましくは０．１−μｍ以上、より
好ましくは１〜５０μｍ程度のものが効率よく使用され
得る。In addition, its shape includes a porous metal made of sintered small particles, a filter made of felt-like fibrous metal, or a fibrous material partially sintered. A thickness of 0.1-μm or more, more preferably about 1 to 50 μm can be used efficiently.
また、本発明の対象とするフィルター装置とは、前記フ
ィルターを収納するだめのフィルター容器や該ポリマの
通路となるポリマ配管や口金、押出機スクリュー及びシ
リンダー、ギアポンプ等のことで高温下で耐アルカリ、
耐酸性のある材料、特に金属か好ましくステン１ノスス
チール等からなる材料を素材とするものが好ましい。通
常前記フィルターは、このフィルター容器に組み込まれ
て使用される。In addition, the filter device to which the present invention is applied refers to a filter container for storing the filter, polymer pipes and mouthpieces that serve as passages for the polymer, extruder screws and cylinders, gear pumps, etc., and is resistant to alkali under high temperatures. ,
It is preferable to use an acid-resistant material, particularly a metal, preferably stainless steel. Usually, the filter is used by being incorporated into this filter container.
次に、本発明のフィルターおよびフィルター装置の洗浄
方法について具体的に述べるが、以下の方法に限定され
るものではない。Next, the method for cleaning the filter and filter device of the present invention will be specifically described, but the method is not limited to the following method.
まず、ステンレススチール製の容器中に、モレキュラシ
ーブ等で水分を除去した本発明の有機溶剤とクロロスル
ホン酸ならびに必要に応じてモレキュラシーブ等の乾燥
剤を所定量入れ、さらに本発明の対象とするフィルター
およびフィルター装置を入れる。この時使用する該ステ
ンレススチール製の容器は、一定時間洗浄した後、該有
機溶剤を抜き取ることのできる機構を備えたものが望ま
しい。次に系内を撹拌しながら常温付近で３０分以上、
好ましくは３時間以上処理する。次に該洗浄液を抜き出
した後、該容器を開いて該フィルターおよびフィルター
装置を取り出す。ここで該フィルターおよびフィルター
装置を取り出す前にクロロスルホン酸を含有しない有機
溶剤で２回以上超音波洗浄した後、Ｎ−メチル−２−ピ
ロリドンのような水溶性の有機溶剤にて一回以上洗浄す
るのが望ましい。次に、該容器から取り出された該フィ
ルターおよびフィルター装置を清浄水で洗浄し、必要に
応じて超音波洗浄をほどこす。前記の水洗された、該フ
ィルターおよびフィルター装置を乾燥し、水分を取り除
いた後、濃硝酸に４〜５時間浸漬して、無機微粒子など
のフィルター内の目詰まり物を溶解する。濃硝酸から取
り出された該フィルターおよびフィルター装置は、再度
清浄水で洗浄し、必要に応じて超音波洗浄や清浄水によ
る洗浄を実施する。該水洗で完全に硝酸を洗い流したフ
ィルターおよびフィルター装置を熱風オーブンで乾燥ず
れはフィルターおよびフィルター装置は完全に再生され
る。First, in a stainless steel container, predetermined amounts of the organic solvent of the present invention and chlorosulfonic acid from which water has been removed using a molecular sieve, etc., and, if necessary, a desiccant such as a molecular sieve, are placed, and then the filter and the like of the present invention are added. Insert the filter device. The stainless steel container used at this time is preferably equipped with a mechanism that allows the organic solvent to be removed after washing for a certain period of time. Next, while stirring the system, keep it at room temperature for 30 minutes or more.
Preferably, the treatment is carried out for 3 hours or more. Then, after drawing out the cleaning liquid, the container is opened and the filter and filter device are removed. Before taking out the filter and filter device, they are ultrasonically cleaned at least twice with an organic solvent that does not contain chlorosulfonic acid, and then washed at least once with a water-soluble organic solvent such as N-methyl-2-pyrrolidone. It is desirable to do so. Next, the filter and filter device taken out from the container are washed with clean water and, if necessary, subjected to ultrasonic cleaning. The filter and filter device washed with water are dried to remove moisture, and then immersed in concentrated nitric acid for 4 to 5 hours to dissolve clogging substances in the filter such as inorganic fine particles. The filter and filter device taken out from the concentrated nitric acid are washed again with clean water, and if necessary, ultrasonic cleaning or cleaning with clean water is performed. The filter and filter device, which have been completely rinsed with nitric acid, are dried in a hot air oven to completely regenerate the filter and filter device.
なお、フィルターの再生の１」安は、フィルターの重量
変化、フィルターの空気流動抵抗の変化、などを測定す
ることによって得られる。Note that the rate of regeneration of a filter can be obtained by measuring changes in the weight of the filter, changes in air flow resistance of the filter, etc.
［測定・評価方法］
本発明におけるフィルターおよびフィルター装置の洗浄
方法で、再生の１目安となる測定・評価方法について以
下に簡単に述べる。[Measurement/Evaluation Method] A measurement/evaluation method that serves as a guideline for regeneration in the filter and filter device cleaning method of the present invention will be briefly described below.
（１−）フィルターおよびフィルター装置の重量変化
使用前のフィルターおよびフィルター装置の重量を測定
しておき、濾過に使用し再生した後、再度フィルターお
よびフィルター装置の重量測定を行ない、その重量変化
が、±０．５％以内であれば再生が完全に行なわれたも
のとした。(1-) Change in weight of filter and filter device The weight of the filter and filter device before use is measured, and after being used for filtration and regenerated, the weight of the filter and filter device is measured again. If it was within ±0.5%, it was considered that the regeneration was complete.
（２）フィルターの空気流動抵抗（空気圧力損失）まず
、使用前のフィルターの空気圧力損失から゛空気流動抵
抗を算出しておき、同様に使用後再生したフィルターの
空気流動抵抗を算出して、その値を比較した場合、空気
流動抵抗値の変化が±５％以内であれば再生が完全に行
なわれたものとした。(2) Air flow resistance (air pressure loss) of the filter First, calculate the air flow resistance from the air pressure loss of the filter before use, and similarly calculate the air flow resistance of the filter regenerated after use. When the values were compared, if the change in air flow resistance value was within ±5%, it was determined that the regeneration had been completed.
ここで、空気流動抵抗（Ｋｏ）とは、フィルタに異物が
堆積する以前のきれいな状態の時に流体が通過する抵抗
をいい、流体として主に使用されるものは、空気、水、
オイル、溶融ポリマなどがあるが、本発明では簡便さの
点から空気で測定した。計算式は次式（１）、すなわち
、Ｋｏ−（ＰｏＸＡ）／ （ＵＸＱ）−−（１−）ただ
し、
Ｋｏ 流動抵抗（１／ｃｍ）
ＰＯ：初圧（２７０ｍ・５ＣＣ）
Ａ ：濾過面積（ｃｍ２）
Ｕ ：流体の粘度（ｇ／ｃｍ−ｓｅｃ）Ｑ ：流速（ｃ
ｍ３／５ｅｃ）
で表わされるが、一定温度の空気を一定流速で流した場
合、濾過面積が変わらないフィルターでは、その時の空
気圧力損失を比較すれば良い。本発明では、２５℃の空
気を２５０ Ｌ ／ ｍ ｉ ｎで流した時の圧力損失
（ｍｍＨ：＋ Ｏ）からフィルターの空気流動抵抗を算
出した。Here, air flow resistance (Ko) refers to the resistance that fluid passes through when the filter is in a clean state before foreign matter accumulates on it. The fluids mainly used are air, water,
There are oils, molten polymers, etc., but in the present invention, air was used for the purpose of simplicity. The calculation formula is the following formula (1), that is, Ko-(PoXA)/(UXQ)--(1-) where: Ko Flow resistance (1/cm) PO: Initial pressure (270m・5CC) A: Filtration area ( cm2) U: Fluid viscosity (g/cm-sec) Q: Flow velocity (c
m3/5ec), but when air at a constant temperature is flowed at a constant flow rate, the air pressure loss at that time can be compared for filters whose filtration area does not change. In the present invention, the air flow resistance of the filter was calculated from the pressure loss (mmH: + O) when air at 25° C. was flowed at 250 L/min.
［実施例］ 本発明を実施例に基づいて説明する。[Example] The present invention will be explained based on examples.
実施例１
底部に抜き出し用コックのついた５Ｌ−８ＵＳ３１６製
容器にジクロロエタン３ｋｇとモレキュラシーブ２００
ｇを入れ２時間撹拌する。次に、クロロスルホン酸［和
光紬薬（株）製］を５００ｇ加え１０分撹拌した後、濾
過に使用したＩ） Ｐ Ｓポリマの付着したステンレス
繊維焼結フィルター３枚を入れ、２０〜２５°Ｃの温度
にて撹拌しながら１０時間処理する。次に、この５Ｌ−
３ＵＳ３１６製の容器の底部抜き出し用コックから内部
の液体を抜き出す。該ステンレス繊維焼結フィルタ］−
１
−３枚を取り出し、一連の後洗浄を行ない、重量変化、
空気圧力損失を測定した結果、重量変化が十〇、２％、
空気圧力損失から求められた空気流動抵抗が＋２％とな
り、はぼ完全に再生された。Example 1 3 kg of dichloroethane and 200 molecular sieves were placed in a 5L-8 US316 container with an extraction cock at the bottom.
Add g and stir for 2 hours. Next, 500 g of chlorosulfonic acid [manufactured by Wako Tsumugi Co., Ltd.] was added and stirred for 10 minutes, and then three stainless steel fiber sintered filters coated with the I)PS polymer used for filtration were added and heated at 20 to 25°. Process for 10 hours at a temperature of C with stirring. Next, this 5L-
3. Drain the liquid from the bottom of the container made of US316 using the drain cock. The stainless steel fiber sintered filter]-
1 - 3 sheets were taken out and subjected to a series of post-washing, and the weight change,
As a result of measuring the air pressure loss, the weight change was 10.2%.
The air flow resistance calculated from the air pressure loss was +2%, and the regeneration was almost complete.
また、処理液からＩ） Ｐ Ｓに起因する悪臭の発生も
なく、また、フィルターの腐蝕もなかった。Further, there was no generation of bad odor caused by PS from the treatment solution, and there was no corrosion of the filter.
実施例２
ジクロロエタンの代わりにピリジンを用いた以外は、実
施例１と同様の方法にてステンレス繊維焼結フィルター
の洗浄を行なった結果、重量変化が＋０．３％、空気圧
力損失がら求められた空気流動抵抗が＋４％となり、は
ぼ完全に再生された。Example 2 A stainless steel fiber sintered filter was cleaned in the same manner as in Example 1 except that pyridine was used instead of dichloroethane. As a result, the weight change was +0.3%, which was determined from the air pressure loss. The air flow resistance increased to +4%, and it was almost completely regenerated.
また、処理液からＰ Ｉ） Ｓに起因する悪臭の発生も
なく、また、フィルターの腐蝕もながった。Furthermore, no foul odor caused by PI) S was generated from the treatment solution, and the filter was not corroded.
実施例３
フィルターを洗浄する際に超音波中で行なう以外は、実
施例１−と同様の方法にてステンレス繊維焼結フィルタ
ーの洗浄を行なった結果、重量変化が＋０．０２％、空
気圧力損失がら求められた空気流動抵抗が＋０．５９６
となり、はぼ完全に再生された。また、処理液がらＰ
Ｉ） Ｓに起因する悪臭の発生もなく、また、フィルタ
ーの腐蝕もなかった。Example 3 A stainless steel fiber sintered filter was cleaned in the same manner as in Example 1 except that the filter was cleaned in ultrasonic waves. As a result, the weight change was +0.02% and the air pressure loss was The air flow resistance calculated from the above is +0.596
As a result, it was completely regenerated. In addition, processing liquid P
I) There was no foul odor caused by S, and there was no corrosion of the filter.
比較例１
クロロスルホン酸を添加しない以外は、実施例１と同様
の方法にてステンレス繊維焼結フィルターの洗浄を行な
った結果、重量変化が＋２６％、空気圧力損失は測定不
能でありフィルターを再生することはできなかった。Comparative Example 1 A stainless steel fiber sintered filter was cleaned in the same manner as in Example 1 except that chlorosulfonic acid was not added. As a result, the weight change was +26% and the air pressure loss was unmeasurable, so the filter was regenerated. I couldn't.
［発明の効果］
本発明の洗浄法を、ＰＰＳを主成分とするポリマの付着
したフィルターおよびフィルター装置の洗浄に適用する
ことにより、常温・常圧の雰囲気下にてフィルター内部
およびフィルター装置内部のＰＰＳポリマが完全に除去
されるのみならず、洗浄時におけるＰＰＳの分解に起因
する悪臭の発生が極めて少ないため環境雰囲気の汚染防
止にも優れている。[Effects of the Invention] By applying the cleaning method of the present invention to the cleaning of filters and filter devices to which polymers mainly composed of PPS are attached, the inside of the filter and the filter device can be cleaned in an atmosphere of normal temperature and normal pressure. Not only is the PPS polymer completely removed, but the generation of bad odors caused by the decomposition of PPS during cleaning is extremely low, which is excellent in preventing pollution of the environmental atmosphere.
Claims (3)
の付着したフィルターをクロロスルホン酸を含有する有
機溶剤中で処理することを特徴とするフィルターの洗浄
方法。(1) A method for cleaning a filter, which comprises treating a filter to which a polymer containing polyphenylene sulfide as a main component is attached in an organic solvent containing chlorosulfonic acid.
の付着したフィルター装置をクロロスルホン酸を含有す
る有機溶剤中で処理することを特徴とするフィルター装
置の洗浄方法。(2) A method for cleaning a filter device, which comprises treating a filter device to which a polymer containing polyphenylene sulfide as a main component is attached in an organic solvent containing chlorosulfonic acid.
ター容器であることを特徴とするフィルター装置の洗浄
方法。(3) A method for cleaning a filter device, characterized in that the filter device according to claim (2) is a filter container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP341189A JPH02184311A (en) | 1989-01-09 | 1989-01-09 | Method for cleaning filter and filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP341189A JPH02184311A (en) | 1989-01-09 | 1989-01-09 | Method for cleaning filter and filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02184311A true JPH02184311A (en) | 1990-07-18 |
Family
ID=11556639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP341189A Pending JPH02184311A (en) | 1989-01-09 | 1989-01-09 | Method for cleaning filter and filter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02184311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6372650B2 (en) | 1997-09-09 | 2002-04-16 | Canon Sales Co., Inc. | Method of cleaning substrate and method of manufacturing semiconductor device |
| EP1198434A1 (en) * | 1999-05-06 | 2002-04-24 | Phillips Petroleum Company | Process to remove poly(arylene sulfide) based deposits from an article |
| CN102008856A (en) * | 2010-09-29 | 2011-04-13 | 南京梅山冶金发展有限公司 | Method for cleaning filter core of filter for lubricating system |
-
1989
- 1989-01-09 JP JP341189A patent/JPH02184311A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6372650B2 (en) | 1997-09-09 | 2002-04-16 | Canon Sales Co., Inc. | Method of cleaning substrate and method of manufacturing semiconductor device |
| EP1198434A1 (en) * | 1999-05-06 | 2002-04-24 | Phillips Petroleum Company | Process to remove poly(arylene sulfide) based deposits from an article |
| EP1198434A4 (en) * | 1999-05-06 | 2002-10-02 | Phillips Petroleum Co | Process to remove poly(arylene sulfide) based deposits from an article |
| CN102008856A (en) * | 2010-09-29 | 2011-04-13 | 南京梅山冶金发展有限公司 | Method for cleaning filter core of filter for lubricating system |
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