JP2965676B2 - Determination method and apparatus for polyvinyl alcohol - Google Patents
Determination method and apparatus for polyvinyl alcoholInfo
- Publication number
- JP2965676B2 JP2965676B2 JP2320136A JP32013690A JP2965676B2 JP 2965676 B2 JP2965676 B2 JP 2965676B2 JP 2320136 A JP2320136 A JP 2320136A JP 32013690 A JP32013690 A JP 32013690A JP 2965676 B2 JP2965676 B2 JP 2965676B2
- Authority
- JP
- Japan
- Prior art keywords
- pva
- polyvinyl alcohol
- container
- amount
- separated
- 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
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims description 62
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims description 62
- 238000000034 method Methods 0.000 title claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000701 coagulant Substances 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 150000001639 boron compounds Chemical class 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000012488 sample solution Substances 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000002351 wastewater Substances 0.000 description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- 238000009990 desizing Methods 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 238000000926 separation method Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、繊維処理廃水中に含まれるポリビニールア
ルコールの含有量を測定するポリビニールアルコールの
定量方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for quantifying polyvinyl alcohol for measuring the content of polyvinyl alcohol contained in wastewater for fiber treatment.
［従来の技術］ 繊維工業界では例えば製織時においては糸切れを防止
する目的でポリビニールアルコールが糊付け剤として使
用されている。ところが、布帛に付着されているこのポ
リビニールアルコール（以下これをPVAと称す）は、布
帛の染色加工時において、染色の妨げとなるため、その
染色加工に先立って布帛から除去しなければならず、糊
抜き工程が必要となる。この糊抜き工程における糊抜き
槽内で溶脱したPVAは、廃水の処理で分解することが難
かしいので、糊抜き処理液からPVAを凝析して分離しな
いと、厳しい排水規制のあるCOD負荷の原因となる。す
わなちPVAはバクテリヤによる分解は困難であるため、
未分解で海洋、河川に流すと、水中の溶存酸素が不足
し、生体系のバランスが崩れて水中生物が死滅し、死の
海洋、河川となるのでPVAを含む廃水の排出にはきびし
い規制がある。そこで業界ではPVAを含む廃液規制の対
策として、従来では硼素キレート凝集分離あるいは高分
子有機物及び無機物の添加による巻込み凝集分離等によ
る分離回収包が取られているが、これらの分離回収法で
はスラッジの発生量が多く、しかもPVAの除去能率が低
く、さらにCOD規制面でも満足が得られるものでなかっ
た。[Prior Art] In the textile industry, for example, at the time of weaving, polyvinyl alcohol is used as a sizing agent for the purpose of preventing yarn breakage. However, this polyvinyl alcohol (hereinafter referred to as PVA) attached to the fabric hinders the dyeing of the fabric during the dyeing process, and must be removed from the fabric prior to the dyeing process. , A desizing process is required. The PVA leached in the desizing tank in this desizing process is difficult to decompose in the treatment of wastewater.Therefore, unless the PVA is coagulated and separated from the desizing solution, the COD load with strict drainage regulations is reduced. Cause. In other words, PVA is difficult to decompose by bacteria,
If it flows into the ocean or river without decomposition, the dissolved oxygen in the water will be insufficient, the balance of the living system will be lost and the aquatic organisms will die, and the dead oceans and rivers will become severe. is there. Therefore, as a countermeasure against waste liquid regulation including PVA, the industry has conventionally used a separation and recovery package such as boron chelate coagulation separation or entrainment coagulation separation by addition of high molecular weight organic and inorganic substances. The amount of methane generated was large, the efficiency of PVA removal was low, and COD regulation was not satisfactory.
［発明が解決しようとする課題］ かかる従来の不具合を解消するために、本発明者は、
PVAを含有する廃水に硫酸を添加して硫酸酸性液とな
し、さらに該液にペルオキソ硫酸塩を作用させると共に
70℃以上に加熱してPVAを分解させるPVAの分離方法を開
発している。ところが、糊抜工程から排出される廃液に
含まれるPVAの含有量は、糊抜処理する布帛の種類、又
は製織業者によって異るためその廃液量を基準として上
記硫酸及びペルオキソ硫酸塩等の分離剤を添加すると、
時によっては分離剤の添加量不足に伴ないPVAの有効分
離が困難となり、また分離剤の過剰添加によって分離剤
の無駄使用が生じることになり経済的かつ回収効率の高
いPVA回収がなされ難い問題点が考えられる。[Problem to be Solved by the Invention] In order to solve such a conventional problem, the present inventor
Sulfuric acid is added to the wastewater containing PVA to form a sulfuric acid acid solution, and further, a peroxosulfate is allowed to act on the solution.
We are developing a PVA separation method to decompose PVA by heating it to 70 ° C or more. However, the content of PVA contained in the waste liquid discharged from the desizing process differs depending on the type of the fabric to be desizing, or the weaving company, so the separating agent such as the above-mentioned sulfuric acid and peroxosulfate is used on the basis of the waste liquid amount. When you add
In some cases, effective separation of PVA becomes difficult due to insufficient amount of added separating agent, and waste of the separating agent is caused by excessive addition of separating agent, and it is difficult to recover economically and highly efficient PVA. A point is conceivable.
［課題を解決するための手段］ 本発明はかかることに鑑みなされたもので、糊抜き工
程から排出される廃液中に含まれるPVA含有量を測定
し、そのPVA含有量に応じてPVA含有排液に添加すべき分
離剤の有効添加量を加減して、分離剤使用量の経済性を
高め、さらにはPVA回収効率を高めることができるよう
にするためPVAの定量方法を提供することにある。Means for Solving the Problems The present invention has been made in view of such circumstances, and measures the PVA content contained in the waste liquid discharged from the desizing step, and according to the PVA content, discharges the PVA content. It is an object of the present invention to provide a method for quantitatively determining PVA so that the effective amount of a separating agent to be added to a liquid can be adjusted to increase the economical efficiency of the amount of the separating agent used and further increase the PVA recovery efficiency. .
さらに本発明を具体的にのべるならばPVA含有水溶液
中のPVAを、硼素化合物で凝析分離して分離残液量を計
り、これによって廃液中をPVA含有量を定量するもので
ある。従って廃液中のPVA含有量が予め検知できること
で廃液中に含まれるPVAの回収が、無駄な分離剤を使用
することなく、しかも効率よくPVA分離を行なうことが
できるものである。More specifically, in the present invention, PVA in a PVA-containing aqueous solution is coagulated and separated with a boron compound, and the amount of the remaining liquid is measured, whereby the PVA content in the waste liquid is determined. Therefore, since the PVA content in the waste liquid can be detected in advance, the recovery of the PVA contained in the waste liquid can be performed efficiently without using a wasteful separating agent.
［実 施 例］ 以下に本発明を図面に示す実施例に基いて詳細に説明
する。[Examples] The present invention will be described in detail below based on examples shown in the drawings.
先ず長尺布帛を連続的に前処理する前処理工程の説明
図であって、Ａはその糊抜き工程、Ｂは精練工程、Ｃは
漂白工程、Ｄは乾燥工程を示す。これら各工程は周知で
あり、また本発明の要旨でないので、それら工程の構造
説明は省略する。First of all, it is an explanatory view of a pre-treatment step for continuously pre-treating a long fabric, wherein A indicates a desizing step, B indicates a scouring step, C indicates a bleaching step, and D indicates a drying step. Since each of these steps is well known and is not the gist of the present invention, the description of the structure of these steps is omitted.
１は糊抜き工程Ａの洗浄槽２からのPVA含有洗浄水
（廃水）を排出する排水管であって、この排水管１に
は、電磁弁３が介在されている。４は上記排水管１から
排出される廃水を受け入れる透明なる容器であった、こ
の容器４の底面は開口蓋５が開閉可能に設けられてい
る。6,6′及び6,7′は容器４の外側に、その容器を挟む
ようにして、対設される２対の投光器及び受光器であっ
て、これらの投光器6,6′及び受光器7,7′によって容器
４内の水量を検知し、その受光器７からの水量検知信号
で前記の電磁弁３を駆動して容器４内の水量が一定とな
るように調整される。また受光器７′からの水量検知信
号によって容器４内へ添加する凝析剤を供給するための
供給管８に設けられている電磁弁９を開閉動作せしめる
ことができる。10は前記容器４の直下に位置されている
計量容器であって、この計量容器10は秤11上に設置され
ている。また前記容器４と計量容器10との間には、エン
ドレスに形成された固形物回収用のネットコンベア12が
配置されている。13は容器４内に供給された廃水と添加
した凝析剤とを攪拌する攪拌機、14は計量容器10に設け
られている排水弁である。Reference numeral 1 denotes a drain pipe for discharging PVA-containing washing water (waste water) from the washing tank 2 in the desizing step A. The drain pipe 1 has an electromagnetic valve 3 interposed. Reference numeral 4 denotes a transparent container for receiving the waste water discharged from the drain pipe 1. The bottom of the container 4 is provided with an opening lid 5 which can be opened and closed. Reference numerals 6, 6 'and 6, 7' denote two pairs of light emitters and light receivers provided outside the container 4 so as to sandwich the container, and these light emitters 6, 6 'and light receivers 7, 7 ', The amount of water in the container 4 is detected, and the electromagnetic valve 3 is driven by the water amount detection signal from the light receiver 7 to adjust the amount of water in the container 4 to be constant. In addition, the electromagnetic valve 9 provided in the supply pipe 8 for supplying the coagulant to be added into the container 4 can be opened and closed by the water amount detection signal from the light receiver 7 '. Reference numeral 10 denotes a measuring container located immediately below the container 4, and the measuring container 10 is set on a balance 11. An endlessly formed net conveyor 12 for collecting solids is disposed between the container 4 and the measuring container 10. 13 is a stirrer for stirring the wastewater supplied into the container 4 and the added coagulant, and 14 is a drain valve provided in the measuring container 10.
以上が本発明よりなるPVA分離装置であるが、次にそ
の作用について述べると、電磁弁３が開かれることによ
り、洗浄槽２内のPVA含有廃水が排水管１を経て容器４
内に供給される。容器４内の廃水が投光器６と受光器７
とによって定量が検知されると、電磁弁３が閉じて洗浄
廃水の供給が中断する。次に電磁弁９が開いて例えば硼
砂、硫酸アンモニウム、炭酸ソーダを含む硼素化合物で
ある凝析剤の供給がなされ、その凝析剤が一定量供給さ
れると、受光器７′の信号によって電磁弁９が閉じる。
容器４内に入れられた廃水と凝析剤との混合比は、廃水
10に対し凝析剤１であることが望ましい。この容器４内
のPVA含有廃水と凝析剤は、攪拌機13により攪拌される
ことにより、約１〜５分間でPVAが凝析して水と分離す
る。かくしてPVAが分離された後、開口蓋５を開放すれ
ば容器４内のPVAと分離水は容器４から導出落下する
が、容器４から導出されたPVAはネットコンベア12によ
って分離され水分のみが該ネットコンベア12を通過して
計量容器10内に蓄積される。この計量容器内に蓄積され
た分離水を秤11によって計量し、この分離水の重量を、
容器４内に入れた廃水の重量から差し引くことにより分
離されたPVAの重量が算出され、これにより廃水内に含
まれるPVA含有量が定量される。The above is the PVA separation apparatus according to the present invention. Next, the operation will be described. When the solenoid valve 3 is opened, the PVA-containing wastewater in the washing tank 2 is discharged through the drain pipe 1 into the container 4.
Supplied within. The wastewater in the container 4 is the floodlight 6 and the light receiver 7
When the amount is detected, the electromagnetic valve 3 is closed and the supply of the washing wastewater is interrupted. Next, the electromagnetic valve 9 is opened to supply a coagulant, for example, a boron compound containing borax, ammonium sulfate, and sodium carbonate. When a predetermined amount of the coagulant is supplied, the electromagnetic valve 9 receives a signal from the light receiver 7 '. 9 closes.
The mixing ratio of the waste water and the coagulant contained in the container 4 is
It is desirable that the coagulant 1 is used for 10. The PVA-containing wastewater and the coagulant in the container 4 are stirred by the stirrer 13 so that the PVA coagulates and separates from the water in about 1 to 5 minutes. After the PVA is separated, if the opening lid 5 is opened, the PVA in the container 4 and the separated water fall out of the container 4 and fall. However, the PVA drawn out of the container 4 is separated by the net conveyor 12 and only the water is removed. It passes through the net conveyor 12 and is accumulated in the measuring container 10. The separated water accumulated in the measuring container is weighed by a balance 11, and the weight of the separated water is
The weight of the separated PVA is calculated by subtracting it from the weight of the wastewater placed in the container 4, whereby the content of the PVA contained in the wastewater is determined.
従って廃水中のPVA含有量が判れば、任意量のPVAを含
有する水溶液に硫酸を添加して硫酸酸性液となし、さら
に該液にペルオキソ硫酸塩を作用させると共に加熱して
PVAを分離させようとするときの上記PVA水溶液中に添加
するに有効な硫酸及びペルオキソ硫酸塩の添加量の算出
が容易であって、これにより上記硫酸及びペルオキソ硫
酸の使用量に無駄がなくしかも有効量の使用が可能とな
って薬剤使用の経済性が高められる。Therefore, if the PVA content in the wastewater is known, sulfuric acid is added to the aqueous solution containing an arbitrary amount of PVA to form a sulfuric acid solution, and the solution is heated with peroxosulfate and heated.
It is easy to calculate the amount of sulfuric acid and peroxosulfate to be added to the PVA aqueous solution when PVA is to be separated, so that the amounts of the sulfuric acid and peroxosulfuric acid can be used without waste. An effective amount can be used, and the economics of drug use can be improved.
なお本発明者が行なったPVA含有廃水の分離実施例は
次の如くであった。Examples of separation of wastewater containing PVA performed by the present inventors were as follows.
布帛洗浄槽２から排出されたポリビニールアルコール
含有廃水を100ccサンプリングして、該サンプリング廃
水内に、硼砂10水塩10g、硫酸アンモニウム35g、炭酸ソ
ーダ5g、水Xgを加えて100ccとなした凝析剤（例えば岡
畑産業株式会社製のPA−10535）を10cc混合し、これを7
0℃に加熱することで約５分間PVAが凝析分離した。この
分離したPVAを取り除いて分離水を計量してPVAの含有量
を定量した。A 100 cc sample of the polyvinyl alcohol-containing wastewater discharged from the cloth washing tank 2 was sampled, and 10 g of borax decahydrate, 35 g of ammonium sulfate, 5 g of sodium carbonate and 5 g of water were added to the sampled wastewater to form a coagulant of 100 cc. (For example, PA-10535 manufactured by Okahata Sangyo Co., Ltd.)
By heating to 0 ° C., the PVA coagulated and separated for about 5 minutes. The separated PVA was removed and the separated water was weighed to determine the content of PVA.
その結果、分離水量とPVAの含有量との関係を示す
と、第２図の如くであった。As a result, the relationship between the amount of separated water and the content of PVA was as shown in FIG.
［発明の効果］ 以上のように本発明のポリビニールアルコールの定量
方法及び装置によれば、例えば繊維の糊抜工程から排出
される単位量当りの廃液中に含まれるPVA含有量が適格
に計測される。従って例えば繊維の洗浄糊抜工程から逐
次排出される廃水中に含まれるPVA濃度を把握すること
ができるので、この廃水中に含まれるPVAを分離回収す
るに必要な分離剤の適格な使用量を決めることができ、
よって使用分離剤の経済性と、PVA分離回収の効率を高
めることができるという効果が得られる。[Effects of the Invention] As described above, according to the method and apparatus for quantifying polyvinyl alcohol of the present invention, for example, the PVA content contained in the waste liquid per unit amount discharged from the desizing process of fibers is appropriately measured. Is done. Therefore, for example, the concentration of PVA contained in the wastewater sequentially discharged from the fiber washing and desizing process can be ascertained, and the appropriate amount of the separating agent required for separating and recovering the PVA contained in this wastewater can be obtained. Can decide,
Therefore, the effect that the economical efficiency of the used separating agent and the efficiency of the PVA separation and recovery can be improved can be obtained.
第１図は本発明よりなるPVA定量方法を実施するに使用
される装置の説明図、第２図は分離水量と分離PVAとの
関係を示した特性図である。 １……排水管、２……洗浄槽 ３……電磁弁、４……容器 ５……開口蓋、6,6′……投光器 7,7′……受光器、８……供給管 ９……電磁弁、10……計量容器 11……秤、12……ネットコンベア 13……攪拌機、14……排水弁FIG. 1 is an explanatory view of an apparatus used to carry out the PVA determination method according to the present invention, and FIG. 2 is a characteristic diagram showing a relationship between a separated water amount and a separated PVA. DESCRIPTION OF SYMBOLS 1 ... Drain pipe, 2 ... Cleaning tank 3 ... Solenoid valve, 4 ... Container 5 ... Opening lid, 6, 6 '... Emitter 7, 7' ... Receiver, 8 ... Supply pipe 9 ... … Solenoid valve, 10… Measuring container 11… Scale, 12… Net conveyor 13… Stirrer, 14… Drain valve
フロントページの続き (56)参考文献 特開 昭52−41456（ＪＰ，Ａ) 特開 昭51−148964（ＪＰ，Ａ) 特開 昭51−146758（ＪＰ，Ａ) 特開 昭51−57682（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G01N 31/00 Continuation of front page (56) References JP-A-52-41456 (JP, A) JP-A-51-148964 (JP, A) JP-A-51-146758 (JP, A) JP-A-51-57682 (JP, A) , A) (58) Field surveyed (Int. Cl. 6 , DB name) G01N 31/00
Claims (2)
の一定量をサンプル液とし、該サンプル液中に硼素化合
物を添加して上記サンプル液中のポリビニールアルコー
ルを凝析、分離、計量し、単位量当りの処理水中に含ま
れるポリビニールアルコールの含有量を定量することを
特徴とするポリビニールアルコールの定量方法。An aliquot of fiber-treated water containing polyvinyl alcohol is used as a sample solution, and a boron compound is added to the sample solution to coagulate, separate and measure the polyvinyl alcohol in the sample solution. A method for quantifying polyvinyl alcohol, which comprises quantifying the content of polyvinyl alcohol contained in treated water per amount.
リビニールアルコールの凝析剤を混和する容器と、該容
器内に注入する前記ポリビニールアルコール含有水溶液
と凝析剤との注入量を規制する手段と、上記容器内で分
離されたポリビニールアルコールと分離水とを分離し、
その分離水を計量する計量手段とを有していることを特
徴とするポリビニールアルコールの定量装置。2. A container for mixing a polyvinyl alcohol-containing aqueous solution and a polyvinyl alcohol coagulant, and means for regulating the amount of the polyvinyl alcohol-containing aqueous solution and coagulant to be injected into the container. Separating the polyvinyl alcohol and the separated water separated in the container,
A measuring means for measuring the separated water.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2320136A JP2965676B2 (en) | 1990-11-22 | 1990-11-22 | Determination method and apparatus for polyvinyl alcohol |
| TW080106985A TW211065B (en) | 1990-11-22 | 1991-09-03 | |
| KR1019910020898A KR920010285A (en) | 1990-11-22 | 1991-11-22 | Method and device for quantifying polyvinyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2320136A JP2965676B2 (en) | 1990-11-22 | 1990-11-22 | Determination method and apparatus for polyvinyl alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190160A JPH04190160A (en) | 1992-07-08 |
| JP2965676B2 true JP2965676B2 (en) | 1999-10-18 |
Family
ID=18118111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2320136A Expired - Lifetime JP2965676B2 (en) | 1990-11-22 | 1990-11-22 | Determination method and apparatus for polyvinyl alcohol |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2965676B2 (en) |
| KR (1) | KR920010285A (en) |
| TW (1) | TW211065B (en) |
-
1990
- 1990-11-22 JP JP2320136A patent/JP2965676B2/en not_active Expired - Lifetime
-
1991
- 1991-09-03 TW TW080106985A patent/TW211065B/zh active
- 1991-11-22 KR KR1019910020898A patent/KR920010285A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| TW211065B (en) | 1993-08-11 |
| KR920010285A (en) | 1992-06-26 |
| JPH04190160A (en) | 1992-07-08 |
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