JP3265102B2 - Cloth bleaching method and apparatus - Google Patents
Cloth bleaching method and apparatusInfo
- Publication number
- JP3265102B2 JP3265102B2 JP00314594A JP314594A JP3265102B2 JP 3265102 B2 JP3265102 B2 JP 3265102B2 JP 00314594 A JP00314594 A JP 00314594A JP 314594 A JP314594 A JP 314594A JP 3265102 B2 JP3265102 B2 JP 3265102B2
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- bleaching
- ozone
- tank
- containing gas
- 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 - Fee Related
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- Treatment Of Fiber Materials (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、染色工場における布の
漂白方法及び漂白装置係わり、特に塩素系漂白剤を用い
ないで布を漂白する布の漂白方法及び漂白装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for bleaching a cloth in a dyeing factory, and more particularly to a method and an apparatus for bleaching a cloth without using a chlorine bleach.
【0002】[0002]
【従来の技術】一般に、紡績機,繊機により作られる反
物においては、界面活性剤や縦糸に使用したのり等が繊
維に付着している。さらに、繊維内部には未処理の着色
成分であるリグニンが残存しているため、布全体が薄茶
色を有する。したがって、この布を任意の色に美しく染
色するためには、染色処理の前に布地を漂白する必要が
ある。この漂白を行う前には、のり抜き,精練の工程を
実施する。2. Description of the Related Art Generally, in a cloth produced by a spinning machine or a textile machine, a surfactant, a glue used for warp yarn, and the like adhere to fibers. Furthermore, since lignin, which is an untreated coloring component, remains inside the fiber, the entire cloth has a light brown color. Therefore, in order to beautifully dye this fabric in any color, it is necessary to bleach the fabric before the dyeing process. Before performing this bleaching, the steps of cutting and scouring are performed.
【0003】したがって、染色工場においては、布の漂
白,染色工程において、漂白剤として酸化剤,塩素系の
次亜塩素酸ソーダ,染料等の化学薬品を高濃度でかつ多
量に使用する。さらに、各々洗浄工程を必要とするの
で、この化学薬品の使用量が多く、それに伴い多量の排
水が発生する。[0003] Accordingly, in a dyeing factory, chemicals such as oxidizing agents, chlorine-based sodium hypochlorite, and dyes are used in high concentrations and in large amounts as bleaching agents in the bleaching and dyeing processes of fabrics. In addition, since each requires a washing step, a large amount of this chemical is used, and a large amount of wastewater is generated.
【0004】このような染色工場におけるれる染色工程
は例えば図4に示すように構成されている。リールから
供給される原布1はのり抜き工程2でもって、原布1に
着しているのりが除去されて、次の精練工程3で精練さ
れる。精練された布は塩素系酸化剤溶液槽4Aで酸化剤
を吸収・膨潤し、反応槽4Bで漂白反応が行われる。そ
して、漂白された布は次の洗浄水10が収容された洗浄
槽9へ導かれる。この洗浄槽9においては、漂白の結果
生成された有機酸,有機ハロゲン化合物及び余分に吸収
した未反応の塩素系酸化剤が布から洗い落される。汚れ
た洗浄水10は洗浄排水11として別途水処理設備へ移
送されて処理・放流される。A dyeing process performed in such a dyeing factory is configured, for example, as shown in FIG. The original cloth 1 supplied from the reel is removed in a demolding step 2 and the glue attached to the original cloth 1 is removed. The scoured cloth absorbs and swells the oxidizing agent in the chlorine-based oxidizing agent solution tank 4A, and the bleaching reaction is performed in the reaction tank 4B. Then, the bleached cloth is guided to the washing tank 9 in which the next washing water 10 is stored. In this washing tank 9, the organic acid, organic halogen compound and extra unreacted chlorine-based oxidizing agent generated as a result of bleaching are washed off the cloth. The contaminated cleaning water 10 is separately transferred to a water treatment facility as a cleaning drainage 11 to be treated and discharged.
【0005】なお、この洗浄排水11は有害副精生成物
や未反応の塩素系酸化剤を含んでいるので生物処理は不
可能である。洗浄された布は絞りおよび乾燥工程12.
染色工程13.後処理工程14及び仕上げ工程15を経
て製品布16としてリールに巻取られる。Since the washing wastewater 11 contains harmful by-products and unreacted chlorine-based oxidizing agents, biological treatment is impossible. 11. the washed cloth is squeezed and dried;
Dyeing step 13. After a post-processing step 14 and a finishing step 15, the product cloth 16 is wound on a reel.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、図4に
示す染色工程に組込まれた漂白装置においてもまだ解消
すべき次のような課題があった、すなわち、近年、工場
の環境に対する規制が厳しくなり、節水型漂白・染色方
法へ移行,排水水質等に配慮する必要が生じてきた。特
に、漂白工程で塩素系の薬剤を高濃度かつ多量に用いる
場合、のり抜き・精練工程のちに残存する界面活性剤,
のり等の有機物及び布自体と反応して生じる有機ハロゲ
ン化合物が、発癌性,変異原性等が排水の放流水域で水
環境問題となる。However, the bleaching apparatus incorporated in the dyeing process shown in FIG. 4 still has the following problem to be solved, that is, in recent years, regulations on factory environment have become strict. It has become necessary to shift to water-saving bleaching and dyeing methods and to consider the quality of wastewater. In particular, when a chlorine-based chemical is used in a high concentration and in a large amount in the bleaching process, the surfactant remaining after the demolding / scouring process,
An organic halogen compound generated by reacting with an organic substance such as glue or the cloth itself causes carcinogenicity, mutagenicity, etc., and thus poses a water environment problem in a water discharge area of wastewater.
【0007】また、これら化合物は微生物分解を受け
ず、環境及び生体内に蓄積濃縮されるため、地域環境全
体から規制される状況にある。染色工場の規模が大きく
なると、これらの環境に対する影響を排除するための施
設が膨大なものになり、かつその施設に対する費用も大
幅に上昇する。[0007] Further, since these compounds do not undergo microbial degradation and accumulate and concentrate in the environment and living organisms, the situation is regulated by the entire local environment. As the size of the dyeing plant increases, the facilities for eliminating these environmental effects become enormous, and the costs for the facilities also increase significantly.
【0008】本発明はこのような事情に鑑みてなされた
ものであり、オゾンを用いることによって、有機ハロゲ
ン化合物を生成する塩素系酸化剤を用いずに、布を効率
的に漂白でき、周囲環境へ放流する排水に有機ハロゲン
化合物が含まれることを未然に防止でき、排水の水処理
工程を簡素化でき、設備全体を簡素化でき、かつ設備の
維持管理費を大幅に低減できる布の漂白方法及び漂白装
置を提供すること目的とする。[0008] The present invention has been made in view of such circumstances, and by using ozone, the cloth can be efficiently bleached without using a chlorine-based oxidizing agent that generates an organic halogen compound, and the ambient environment can be bleached. Bleaching method for fabrics that can prevent organic halogen compounds from being contained in wastewater discharged to wastewater, simplify the wastewater treatment process, simplify the entire equipment, and greatly reduce equipment maintenance costs And a bleaching apparatus.
【0009】[0009]
【課題を解決するための手段】上記課題を解消するため
に、本発明の布の漂白方法においては、植物繊維の布に
有機酸でpH3以下に調整された水溶液を含浸すること
によって、布を水分率30%以上60%以下に吸湿・膨
潤させ、この吸湿・膨潤させた布にオゾン含有ガスを接
触させて漂白し、この漂白の結果生じた酸を洗浄するよ
うにしている。Means for Solving the Problems In order to solve the above-mentioned problems, in the method for bleaching a cloth according to the present invention, a method for producing a plant fiber cloth is described.
Impregnating with an aqueous solution adjusted to pH 3 or less with an organic acid
Thus, the cloth is allowed to absorb moisture and swell to a moisture content of 30% or more and 60% or less, and the moisture-absorbed and swollen cloth is contacted with an ozone-containing gas for bleaching, and the acid generated as a result of the bleaching is washed. .
【0010】また、別の発明における布の漂白方法にお
いては、布を吸湿・膨潤させ、この吸湿・膨潤させた布
にオゾン含有ガスを接触させて漂白し、この漂白された
後の布を紫外線照射し、この紫外線照射された布から漂
白の結果生じた酸を洗浄するようにしている。 In another aspect of the present invention , there is provided a method for bleaching a cloth, comprising the steps of: absorbing and swelling the cloth;
And bleached by contacting with an ozone-containing gas.
The subsequent cloth is irradiated with ultraviolet light, and drifted from the cloth irradiated with ultraviolet light.
The resulting acid on the white is washed away.
【0011】また、別の発明は、上述した発明の布の漂
白方法において、布に有機酸でpH3以下に調整された
水溶液を含浸することによって、布を吸湿・膨潤させる
ようにしている。 Another aspect of the present invention is directed to a fabric drift of the above-described invention.
In the white method, the cloth was adjusted to pH 3 or less with an organic acid.
Moisture absorption and swelling of cloth by impregnation with aqueous solution
Like that.
【0012】また、別の発明における布の漂白装置は、
植物繊維の布に有機酸でpH3以下に調整された水溶液
を含浸することによって、布を水分率30%以上60%
以下に吸湿・膨潤させる膨潤槽と、オゾン含有ガスを発
生するオゾン発生装置と、膨潤槽にて吸湿・膨潤された
布にオゾン発生装置にて発生されたオゾン含有ガスを接
触させて漂白するオゾン漂白槽と、このオゾン漂白槽に
おける漂白の結果生じた酸を布から洗浄する洗浄槽とを
備えている。 In another aspect of the present invention, there is provided a fabric bleaching apparatus,
Aqueous solution adjusted to pH 3 or less with organic acid on vegetable fiber cloth
By impregnating the cloth with a moisture content of 30% or more and 60% or more.
The following is a swelling tank that absorbs and swells, and an ozone-containing gas is generated.
Ozone generator and the swelling tank
Contact the cloth with the ozone-containing gas generated by the ozone generator.
Ozone bleaching tank that bleaches when touched, and this ozone bleaching tank
A washing tank for washing the acid resulting from the bleaching from the cloth.
Have.
【0013】さらに別の発明における布の漂白装置は、
布を有機酸でpH3以下に調整された水溶液を含浸する
ことによって、布を吸湿・膨潤させる膨潤槽と、オゾン
含有ガスを発生するオゾン発生装置と、膨潤槽にて吸湿
・膨潤された布にオゾン発生装置にて発生されたオゾン
含有ガスを接触させて漂白するオゾン漂白槽と、このオ
ゾン漂白槽でオゾン含有ガスを接触させた後の布を紫外
線照射する紫外線照射装置と、この紫外線照射装置で紫
外線照射された布から漂白の結果生じた酸を洗浄する洗
浄槽とを備えている。 [0013] In another aspect of the present invention, there is provided a fabric bleaching apparatus.
Impregnate the cloth with an aqueous solution adjusted to pH 3 or less with an organic acid
Swelling tank that absorbs and swells the cloth
Moisture absorption in the swelling tank with an ozone generator that generates contained gas
・ Ozone generated by the ozone generator on the swollen cloth
An ozone bleaching tank for bleaching by contacting the
Ultra-violet cloth after contacting ozone-containing gas in the Zon bleaching tank
UV irradiator that irradiates X-rays
Washing to wash acid resulting from bleaching from externally irradiated fabric
It has a clean tank.
【0014】[0014]
【0015】[0015]
【0016】[0016]
【0017】[0017]
【作用】このように構成された布の漂白方法及び漂白装
置によれば、オゾン含有ガスに含まれるオゾンは、吸湿
・膨潤された布の繊維の内部へ拡散して、繊維に残存す
る着色成分のリグニンと反応して漂白が完了する。この
結果、反応副成物として微生物により分解しやすいアル
デヒド,ケント,カルボン酸等が生成される。According to the fabric bleaching method and the bleaching apparatus constructed as described above, ozone contained in the ozone-containing gas is diffused into the fibers of the moisture-swollen and swollen fabric, and the coloring component remaining in the fibers is removed. Reacts with lignin to complete bleaching. As a result, aldehydes, kents, carboxylic acids, and the like, which are easily decomposed by microorganisms, are produced as reaction by-products.
【0018】一般に、オゾンは酸化力が強く、オゾン自
身の自己分解によっても消滅するが、周囲温度上昇、紫
外線照射によって、オゾン自身の自己分解が加速され
る。また、溶液中のオゾンは気体オゾンより自己分解速
度が速く、かつこの分解速度は溶液のpHに左右され
る。すなわち、pH3以下では比較的安定しているが、
中性,又はアルカリ性域では自己分解が急速に進む。In general, ozone has a strong oxidizing power and disappears due to the self-decomposition of ozone itself, but the self-decomposition of ozone itself is accelerated by an increase in ambient temperature and irradiation of ultraviolet rays. Ozone in a solution has a higher rate of self-decomposition than gaseous ozone, and the rate of decomposition depends on the pH of the solution. That is, it is relatively stable at pH 3 or less,
In the neutral or alkaline range, autolysis proceeds rapidly.
【0019】また、オゾン含有ガスは、安全な飲料水の
浄化プロセスとして広く利用され初めており、名大気中
の酸素または酸素ボンベ等から取込んで簡単に任意濃度
のものを生成できる。Ozone-containing gas has been widely used as a safe drinking water purification process for the first time. Ozone-containing gas can be easily obtained at an arbitrary concentration by taking it from oxygen or oxygen cylinder in the atmospheric air.
【0020】発明者は、このようなオゾンの既知特性を
考慮して種々の実験を行った結果、繊維内部のリグニン
を酸化する場合、オゾンを繊維内部まで有効に拡散到達
させることが重要であり、拡散後、繊維内部で酸化反応
が促進する最適条件を与えれば、布が有効に漂白される
ことが実証された。As a result of conducting various experiments in consideration of the known properties of ozone, the inventors have found that when lignin is oxidized in the fiber, it is important that the ozone is effectively diffused into the fiber. It has been demonstrated that the fabric can be effectively bleached if the optimum conditions for promoting the oxidation reaction inside the fiber after diffusion are given.
【0021】したがって、この発明においては、前もっ
て布を水分率30%以上60%以下に吸湿・膨潤させる
ようにしている。よって、従来の漂白手法のように塩素
系酸化剤を使用する事なく、布を効率よく漂白できるの
で、有害物質が排水に含まれず、かつ洗浄排水量も少な
くなる。その結果、排水の水処理が簡素化され、かつ微
生物を用いて分解処理させることも可能となる。Therefore, in the present invention, the cloth is previously absorbed and swelled to a moisture content of 30% or more and 60% or less . Therefore, the cloth can be efficiently bleached without using a chlorine-based oxidizing agent as in the conventional bleaching method, so that harmful substances are not contained in the wastewater and the amount of washing wastewater is reduced. As a result, the water treatment of the wastewater is simplified, and the wastewater can be decomposed by using microorganisms.
【0022】また、請求項2,請求項6〜8において
は、上述した条件に加えて、有機酸でpH3以下の水溶
液で布を吸湿・膨潤させることによって、より一層漂白
効果を向上させている。In the second and sixth to eighth aspects, in addition to the conditions described above, the bleaching effect is further improved by absorbing and swelling the cloth with an aqueous solution having a pH of 3 or less with an organic acid. .
【0023】さらに、オゾン含有ガスに接触させた後の
布の温度を上昇させたり、オゾン含有ガスに接触させた
後の布を紫外線照射することによって、オゾンの自己分
解が促進され、より短時間で所望の漂白効果が得られる
ことが実証されている。Further, by raising the temperature of the cloth after contacting with the ozone-containing gas or irradiating the cloth after contacting with the ozone-containing gas with ultraviolet rays, the self-decomposition of ozone is promoted, and It has been demonstrated that the desired bleaching effect can be obtained.
【0024】[0024]
【実施例】以下本発明の実施例を説明する。実施例の説
明の前に、発明者が行った実験を説明する。のり抜き工
程及び精練工程を経た後の綿布を実験対象布とし、この
実験対象布に対して、次亜塩素酸ソーダを用いた標準漂
白処理と、オゾン含有ガスを用いたオゾン漂白処理とを
実行して、漂白後の各実験対象布の白度を比較した。Embodiments of the present invention will be described below. Before describing the examples, experiments performed by the inventor will be described. The cotton cloth after the unrolling step and the scouring step is used as the test cloth, and the test cloth is subjected to a standard bleaching process using sodium hypochlorite and an ozone bleaching process using an ozone-containing gas. Then, the whiteness of each test cloth after bleaching was compared.
【0025】なお、漂白槽として、幅0.2m.高さ
0.1m,長さ0,5mのアクリル製密閉箱を準備し、
この漂白槽内に、水分率を調整した各実験対象布を浸し
た。オゾン漂白処理においては、実験対象布の水分率は
オゾンの自己分解を抑制する目的と、漂白後の洗浄排水
処理が標準的な生物処理法で行えることを考慮し、pH
3の酢酸水溶液で調整した。また、空気を原料ガスとす
るオゾン発生装置で得たオゾン含有ガスを、布の水分率
を一定とするため純水中に曝気温度を調整後に、試料布
の表裏均一にオゾン含有ガスが接触するように、連続的
に流量0.83リットル/分で漂白槽内に供給した。The bleaching tank has a width of 0.2 m. Prepare an acrylic box with a height of 0.1m and a length of 0.5m,
In the bleaching tank, the cloths for each experiment whose moisture content was adjusted were immersed. In the ozone bleaching treatment, the moisture content of the cloth to be tested is adjusted to pH in consideration of the purpose of suppressing the self-decomposition of ozone and the fact that the washing and drainage treatment after bleaching can be performed by a standard biological treatment method.
Adjusted with acetic acid aqueous solution of No. 3. In addition, the ozone-containing gas obtained by the ozone generator using air as a source gas is brought into pure water in order to keep the moisture content of the cloth constant, and after the aeration temperature is adjusted, the ozone-containing gas uniformly contacts the front and back of the sample cloth. Thus, it was continuously supplied into the bleaching tank at a flow rate of 0.83 liter / min.
【0026】また、白度は、同一実験対象布について、
分光光度計における波長466nmの光の反射率を布表面
の3か所で測定して、平均値を求めた。以下に実験条件
と実験結果を示す。The whiteness of the same test cloth was
The reflectance of light having a wavelength of 466 nm in a spectrophotometer was measured at three points on the cloth surface, and the average value was determined. The experimental conditions and results are shown below.
【0027】 標準手法(従来方法)の実験条件 オゾン漂白手法の実験条件 漂白槽 0.2 x 0,1 x 0,5 m3 漂白槽 同左 有効塩素 3g/l (pH11.5) 原料ガス 空気 浸透剤 0.1 〜0,2 % オゾン濃度 20 g/Nm3 処理条件 20℃ 4hr 処理条件 20℃ 60min pH3 水分率 30,60.90%[0027] Standard techniques (conventional method) Experimental conditions bleaching tank 0.2 Experimental conditions ozone bleaching techniques x 0,1 x 0,5 m 3 bleaching tank Same available chlorine 3 g / l (pH 11.5) material gas air penetrant 0.1 ~ 0.2% Ozone concentration 20 g / Nm 3 Treatment condition 20 ℃ 4hr Treatment condition 20 ℃ 60min pH3 Water content 30,60.90%
【0028】[0028]
【表1】 [Table 1]
【0029】この実験結果で得られた通常の塩素系漂白
剤を用いた標準手法の白度とオゾン漂白処手法における
各白度とを比較すると、オゾン漂白処手法で得られた各
白度は標準手法に比較して遜色がないことが実施され
た。特に、水分率30%及び水分率60%において、漂
白効果が優れている。When the whiteness of the standard method using a chlorine-based bleaching agent and the whiteness of the ozone bleaching method obtained by the experiment are compared, the whiteness obtained by the ozone bleaching method is as follows. It was carried out that was comparable to the standard method. In particular, the bleaching effect is excellent at a moisture content of 30% and a moisture content of 60%.
【0030】また、同等の白度を得るために所用する時
間はオゾン漂白手法が標準手法に比較して格段に短縮さ
れる。なお、水分率90%において、若干白度が落ちる
のは、繊維間の自由水がオゾンの自己分解に対して安定
なpH3であっても、自由水中におけるオゾンの自己分
解が無視できないためであると考えらる。Further, the time required for obtaining the same whiteness is significantly reduced in the ozone bleaching method as compared with the standard method. The reason why the whiteness slightly decreases at a moisture content of 90% is that even if the free water between the fibers has a pH of 3 which is stable against the self-decomposition of ozone, the self-decomposition of ozone in the free water cannot be ignored. I think.
【0031】このような実験結果における各条件を考慮
した漂白装置が組込まれた染色工程を図1に示す。な
お、図4に示す従来の漂白装置が組込まれた染色工程と
同一部分には同一符合が付してある。したがって、重複
する部分の詳細説明は省略されている。FIG. 1 shows a dyeing process in which a bleaching device in consideration of each condition in the experimental results is incorporated. The same parts as those in the dyeing step in which the conventional bleaching apparatus shown in FIG. 4 is incorporated are denoted by the same reference numerals. Therefore, the detailed description of the overlapping part is omitted.
【0032】リールから供給される原布1は、のり抜き
工程2でもって付着しているのりが除去されて、次の精
練工程3で精練される。精練された布1は膨脹槽4内へ
導かれる。膨脹槽4内にはpH3に調整された酢酸水溶
液が収容されている。なおpH3以下の酢酸水溶液であ
ってもよい。The original cloth 1 supplied from the reel is removed in the demolding step 2 and the adhering paste is removed, and is refined in the next refining step 3. The scoured cloth 1 is guided into the expansion tank 4. An acetic acid aqueous solution adjusted to pH 3 is accommodated in the expansion tank 4. An aqueous acetic acid solution having a pH of 3 or less may be used.
【0033】布1はこの膨脹槽4内において、pH3に
調整された酢酸水溶液で吸湿・膨潤されて、次のロール
絞りエアジェット吹き付け5によって水分率が30〜6
0%に調節される。The cloth 1 is absorbed and swelled with an aqueous solution of acetic acid adjusted to pH 3 in the expansion tank 4, and the moisture content is adjusted to 30 to 6 by the next roll squeezing air jet 5.
Adjusted to 0%.
【0034】水分率が30〜60%に調整された布は次
のオゾン漂白槽6へ導かれる。オゾン漂白槽6には、オ
ゾン発生装置7が接続されている。オゾン発生装置7は
大気中又は別途準備された酸素ボンベから酸素を取込ん
でオゾンを生成してオゾン含有ガスをオゾン漂白槽6へ
供給し、オゾン漂白槽6内にオゾン含有ガスを効果的に
拡散させる。なお、オゾン含有ガスに含まれるオゾンの
ガス濃度はオゾン発生装置7において電気的に簡単に制
御可能である。オゾン漂白槽6へ導かれた布は、前述し
た原理により、オゾン含有ガスにて漂白される。The cloth whose moisture content has been adjusted to 30 to 60% is led to the next ozone bleaching tank 6. An ozone generator 7 is connected to the ozone bleaching tank 6. The ozone generator 7 takes in oxygen from the atmosphere or from a separately prepared oxygen cylinder, generates ozone, supplies the ozone-containing gas to the ozone bleaching tank 6, and effectively converts the ozone-containing gas into the ozone bleaching tank 6. Spread. The concentration of ozone contained in the ozone-containing gas can be easily and electrically controlled in the ozone generator 7. The cloth guided to the ozone bleaching tank 6 is bleached with an ozone-containing gas according to the principle described above.
【0035】なお、オゾン漂白槽6内の未反応オゾンは
排オゾン分解装置8で分解処理されて大気中に放出され
る。オゾン漂白槽6内で漂白された布は次の洗浄槽9内
へ導かれる。洗浄槽9内には洗浄水10が収容されてい
る。オゾン漂白槽6内における漂白の結果生成されるグ
リオキシル酸,シュウ酸等の有機酸及び余剰に吸収した
酢酸は、この洗浄槽9内に収容された洗浄水10で布か
ら洗い落とされる。The unreacted ozone in the ozone bleaching tank 6 is decomposed by the waste ozone decomposing device 8 and released into the atmosphere. The cloth bleached in the ozone bleaching tank 6 is led into the next washing tank 9. Cleaning water 10 is stored in the cleaning tank 9. Organic acids such as glyoxylic acid and oxalic acid and excess acetic acid generated as a result of bleaching in the ozone bleaching tank 6 are washed off the cloth by the washing water 10 contained in the washing tank 9.
【0036】所定長さの布に対する洗浄を実施した後の
汚れた洗浄水10は、洗浄排水11として別途水処理設
備へ移送されて処理・放流される。なお、この洗浄排水
11は有害副生成物や未反応の塩素系酸化剤を含んでい
ないので、一般的な生物処理が可能である。The dirty washing water 10 after washing the cloth of a predetermined length is transferred to a separate water treatment facility as a washing wastewater 11 to be treated and discharged. Since the washing wastewater 11 does not contain harmful by-products or unreacted chlorine-based oxidizing agents, general biological treatment can be performed.
【0037】洗浄された布は絞りおよび乾燥工程12.
染色工程13.後処理工程14及び仕上げ工程15を経
て製品布16としてリールに巻取られる。このように構
成された染色前処理工程における漂白装置においては、
オゾン漂白手法を採用している。前述したように洗浄排
水11は有害副生成物や未反応の塩素系酸化剤を含んで
いないので、一般的な生物処理が可能である。すなわ
ち、洗浄排水11に対する処理設備が簡素化され、設備
費を大幅に低減できる。さらに、水環境に与える影響を
最小限に抑制できる。The washed cloth is squeezed and dried.
Dyeing step 13. After a post-processing step 14 and a finishing step 15, the product cloth 16 is wound on a reel. In the bleaching apparatus in the dyeing pretreatment step configured as described above,
Uses ozone bleaching technique. As described above, the cleaning wastewater 11 does not contain harmful by-products or unreacted chlorine-based oxidizing agents, so that general biological treatment can be performed. That is, the processing equipment for the cleaning wastewater 11 is simplified, and the equipment cost can be significantly reduced. Further, the influence on the water environment can be suppressed to a minimum.
【0038】さらに、オゾン漂白手法を採用することに
よって、洗浄排水11量そのものを低減できる。また、
塩素系漂白剤を用いた標準手法に比較して、漂白処理時
間を短縮できるので、原布1から同一のライン速度でも
って製品布16を得る場合には、漂白槽に布を浸す時間
が短くなるので、漂白槽の大きさを標準手法に比較し
て、漂白槽の布の搬送方向長さを短くできる。したがっ
て、染色前処理工程全体を小型化できる。Further, by employing the ozone bleaching method, the amount of the washing wastewater 11 can be reduced. Also,
Since the bleaching time can be reduced as compared with the standard method using a chlorine bleach, when the product cloth 16 is obtained from the original cloth 1 at the same line speed, the time for immersing the cloth in the bleaching tank is short. As a result, the length of the bleaching tank in the transport direction of the cloth can be reduced as compared with the standard method. Therefore, the entire pre-dyeing process can be downsized.
【0039】また、オゾン発生装置7は、大気中の酸素
又は酸素ボンベを用いて、又は水の電気分解を用いて任
意ガス濃度のオゾン含有ガスを簡単にかつ低価格で作成
できる。よって、染色工程のランニングコストをさらに
低減できる。The ozone generator 7 can easily and inexpensively produce an ozone-containing gas having an arbitrary gas concentration by using oxygen in the atmosphere or an oxygen cylinder or by using electrolysis of water. Therefore, the running cost of the dyeing process can be further reduced.
【0040】なお、繊維内へのオゾンの拡散は濃度依存
性があり、オゾン濃度が高いほど効果的に漂白できると
考えられるが、発生効率を勘案しながらオゾン濃度を自
由に制御できる点においても、このオゾン漂白手法は、
従来の塩素系漂白剤を用いた標準手法に比較して有利で
ある。The diffusion of ozone into the fibers depends on the concentration, and it is considered that the higher the ozone concentration, the more effective the bleaching. However, the ozone concentration can be freely controlled in consideration of the generation efficiency. , This ozone bleaching technique
This is advantageous compared to the standard method using a conventional chlorine bleach.
【0041】次に、オゾン漂白時の温度の影響について
行った実験結果を説明する。前述した水分率を変化させ
た場合の実験対象布及び漂白槽を用いて、下記の実験条
件でオゾン漂白実験を実施した。そして、表2に示す白
度の実験結果を得た。Next, the results of an experiment conducted on the effect of temperature during ozone bleaching will be described. An ozone bleaching experiment was carried out under the following experimental conditions using the cloth to be tested and the bleaching tank when the moisture content was changed as described above. And the experiment result of the whiteness shown in Table 2 was obtained.
【0042】オゾン漂白手法の実験条件 原料ガス 空気 オゾン濃度 20 g/Nm3 処理条件 30min pH3,水分率60% 温度 20,50.80℃Experimental conditions of ozone bleaching method Raw material gas Air Ozone concentration 20 g / Nm 3 Treatment conditions 30 min pH3, moisture content 60% Temperature 20, 50.80 ° C
【0043】[0043]
【表2】 [Table 2]
【0044】オゾン含有ガスとの接触時間を30分と
し、接触後、実験対象布を速やかに取出して、上述した
温度条件に制御された耐蝕性を有する金属板にこの実験
対象布を挟んで3分間放置した後に、前述した手法で白
度を規定した。The contact time with the ozone-containing gas was set to 30 minutes, and after the contact, the cloth to be tested was quickly taken out, and the cloth to be tested was sandwiched between metal plates having corrosion resistance controlled at the above-mentioned temperature conditions. After standing for minutes, the whiteness was determined by the method described above.
【0045】実験結果に示すように、温度を20℃に設
定した場合に比較して、温度を60℃及び80℃に設定
した場合の方がより漂白効果が優れていることが理解で
きる。これは、加温により繊維内部に拡散したオゾンの
自己分解が促進され、短時間で良好な漂白効果が得られ
たものと考えられる。As shown in the experimental results, it can be understood that the bleaching effect is better when the temperature is set to 60 ° C. and 80 ° C. than when the temperature is set to 20 ° C. This is presumably because the self-decomposition of ozone diffused into the fibers by heating was promoted, and a good bleaching effect was obtained in a short time.
【0046】なお、加温度は50℃と80℃とを比較す
ると、漂白効率はほぼ同一レベルであるが、設備全体の
運転費用を考慮する50℃の加温度で十分であることが
理解できる。When the heating temperature is compared between 50 ° C. and 80 ° C., it can be understood that the bleaching efficiency is almost the same level, but the heating temperature of 50 ° C. is sufficient considering the operation cost of the entire equipment.
【0047】このような実験結果における加温度の条件
を考慮した漂白装置が組込まれた染色工程を図2に示
す。なお、図1に示す実施例の漂白装置が組込まれた染
色工程と同一部分には同一符合が付してある。したがっ
て、重複する部分の詳細説明は省略されている。FIG. 2 shows a dyeing process in which a bleaching device in consideration of the heating conditions in the above experimental results is incorporated. The same parts as those in the dyeing process in which the bleaching apparatus of the embodiment shown in FIG. 1 is incorporated are denoted by the same reference numerals. Therefore, the detailed description of the overlapping part is omitted.
【0048】この実施例工程においては、オゾン漂白槽
6と洗浄槽9との間に加温装置としての例えば内部にヒ
ータが収納された加温ローラ6Aが介挿されている。こ
の加温ローラ6Aは50℃近傍でかつ50℃を越えない
一定の温度に制御されている。In this embodiment, a heating roller 6A, for example, in which a heater is housed, is inserted between the ozone bleaching tank 6 and the cleaning tank 9 as a heating device. The heating roller 6A is controlled at a constant temperature near 50 ° C. and not exceeding 50 ° C.
【0049】このように構成された染色工程において
は、オゾン漂白槽6でオゾ含有ガスが接触された布は加
温ローラ6Aでもってほぼ50℃に加温される。その結
果、布の繊維内部まで拡散したオゾンは急速な加温によ
る自己分解で、酸化力の強い酸素ラジカル.水酸基ラジ
カルとなり、着色物質のリグニンを酸化・脱色する。In the dyeing process thus constituted, the cloth contacted with the ozone-containing gas in the ozone bleaching tank 6 is heated to approximately 50 ° C. by the heating roller 6A. As a result, the ozone diffused into the fibers of the fabric is self-decomposed by rapid heating, and becomes oxygen radicals with strong oxidizing power. It becomes a hydroxyl radical and oxidizes and decolorizes lignin, a coloring substance.
【0050】なお、実施例装置としては、加温装置とし
て、加温ローラ6Aを採用したが、マイクロ波,赤外線
等を用いた加温装置であってもよい。このように構成さ
れた染色工程における漂白装置においては、加温装置と
しての加温ローラ6Aを用いているので、図1に示す先
の実施例の漂白装置に比較して、より短時間で所望の漂
白効率を得ることができる。In the embodiment, the heating roller 6A is used as the heating device, but a heating device using microwaves, infrared rays, or the like may be used. In the bleaching apparatus in the dyeing process configured as described above, since the heating roller 6A is used as a heating apparatus, the desired time can be shortened in comparison with the bleaching apparatus of the previous embodiment shown in FIG. Bleaching efficiency can be obtained.
【0051】次に、オゾン漂白時の紫外線照射の影響に
ついて行った実験結果を説明する。前述した水分率を変
化された場合の実験対象布及び漂白槽を用いて、下記の
実験条件でオゾン漂白実験を実施した。そして、表3に
示す白度の実験結果を得た。Next, the results of an experiment conducted on the effect of ultraviolet irradiation during ozone bleaching will be described. An ozone bleaching experiment was carried out under the following experimental conditions using the cloth to be tested and the bleaching tank when the moisture content was changed. And the experiment result of the whiteness shown in Table 3 was obtained.
【0052】オゾン漂白手法の実験条件 原料ガス 空気 オゾン濃度 20 g/Nm3 処理条件 20℃,30min ,pH3,水分率60% 紫外線照射時間 10min ,20minExperimental conditions of ozone bleaching method Raw material gas Air Ozone concentration 20 g / Nm 3 Treatment conditions 20 ° C., 30 min, pH 3, moisture content 60% UV irradiation time 10 min, 20 min
【0053】[0053]
【表3】 [Table 3]
【0054】具体的には、漂白槽に収納した実験対象布
に対して30分間オゾン含有ガスを接触させ、その後、
オゾン含有ガスの供給を停止し、漂白槽の上部に取付け
た15Wの殺菌用低圧水銀ランプ2本を、実験対象布の
上方2cm位置から実験対象布に対して、10分間及び2
0分間照射した。そして、前述した手法で各白度を測定
した。Specifically, an ozone-containing gas was brought into contact with the cloth to be tested stored in the bleaching tank for 30 minutes.
The supply of the ozone-containing gas was stopped, and two 15 W sterilizing low-pressure mercury lamps mounted on the upper part of the bleaching tank were placed on the cloth to be tested for 10 minutes and 2 cm from a position 2 cm above the cloth to be tested.
Irradiated for 0 minutes. And each whiteness was measured by the method mentioned above.
【0055】紫外線照射では波長260 nmにオゾンの大き
な吸収線が存在し、ガス中,液中,繊維中でもオゾンの
自己分解が促進され、加温の場合と同様に、酸化力の強
い酸素ラジカル,水酸基ラジカルとなる。そのために、
繊維内部に拡散したオゾンは紫外線照射により自己分解
が促進され、短時間で良好な漂白効果が得られた。In the case of ultraviolet irradiation, a large absorption line of ozone exists at a wavelength of 260 nm, and the self-decomposition of ozone is promoted in gas, liquid, and fiber. As in the case of heating, oxygen radicals having strong oxidizing power are generated. It becomes a hydroxyl radical. for that reason,
The self-decomposition of the ozone diffused into the fiber was promoted by the irradiation of ultraviolet rays, and a good bleaching effect was obtained in a short time.
【0056】このような実験結果における紫外線照射の
条件を考慮した漂白装置が組込まれた染色工程を図3に
示す。なお、図1に示す実施例の漂白装置が組込まれた
染色工程と同一部分には同一符合が付してある。したが
って、重複する部分の詳細説明は省略されている。FIG. 3 shows a dyeing process in which a bleaching apparatus in consideration of the conditions of ultraviolet irradiation in the experimental results is incorporated. The same parts as those in the dyeing process in which the bleaching apparatus of the embodiment shown in FIG. 1 is incorporated are denoted by the same reference numerals. Therefore, the detailed description of the overlapping part is omitted.
【0057】この実施例工程においては、オゾン漂白槽
6と洗浄槽9との間に複数の紫外線ランプが組込まれた
紫外線照射装置6Bが介挿されている。布の各点がこの
紫外線照射装置6B内を通過するに要する時間は例えば
10分になるように、紫外線照射装置6Bの搬送方向の
長さ及びランプ数が設定されている。In this embodiment, between the ozone bleaching tank 6 and the cleaning tank 9, an ultraviolet irradiation device 6B in which a plurality of ultraviolet lamps are incorporated is interposed. The length of the ultraviolet irradiation device 6B in the transport direction and the number of lamps are set so that the time required for each point of the cloth to pass through the inside of the ultraviolet irradiation device 6B is, for example, 10 minutes.
【0058】このように構成された染色工程において
は、オゾン漂白槽6でオゾ含有ガスが接触された布は、
紫外線照射装置6Bでもって10分間隔紫外線照射を受
ける。その結果、布の繊維内部まで拡散したオゾンは紫
外線による自己分解で、酸化力の強い酸素ラジカル.水
酸基ラジカルとなり、着色物質のリグニンを酸化・脱色
する。In the dyeing process thus constituted, the cloth contacted with the ozone-containing gas in the ozone bleaching tank 6 is
Ultraviolet irradiation is performed by the ultraviolet irradiation device 6B at intervals of 10 minutes. As a result, the ozone diffused into the fiber of the cloth is self-decomposed by ultraviolet rays, and becomes oxygen radicals with strong oxidizing power. It becomes a hydroxyl radical and oxidizes and decolorizes lignin, a coloring substance.
【0059】このように構成された染色工程における漂
白装置においては、紫外線照射装置6Aを用いているの
で、図1及び図2に示す先の実施例の漂白装置に比較し
て、より一層短時間で所望の漂白効率を得ることができ
る。In the bleaching apparatus in the dyeing process thus configured, since the ultraviolet irradiation apparatus 6A is used, the bleaching apparatus of the previous embodiment shown in FIGS. And a desired bleaching efficiency can be obtained.
【0060】[0060]
【発明の効果】以上説明したように、本発明の布の漂白
方法及び漂白装置においては、布を吸湿・膨潤させて漂
白に最適な状態に移行させた上で、該当布をオゾンを用
いて漂白している。そして、従来の漂白手法で必要であ
った有機ハルゲン化合物を生成する塩素系酸化剤を用い
ていない。As described above, in the method and apparatus for bleaching cloth according to the present invention, the cloth is absorbed and swelled to shift to an optimum state for bleaching, and then the cloth is treated with ozone. Bleached. In addition, a chlorine-based oxidizing agent that generates an organic hargen compound required by the conventional bleaching method is not used.
【0061】したがって、布を効率的にかつ短時間で漂
白でき、環境に放出する排水に有機ハロゲン化合物が含
まれることを未然に防止でき、排水の水処理工程を例え
ば微生物を用いることによって簡素化でき、設備全体を
簡素化でき、かつ設備の維持管理費を大幅に低減でき
る。Therefore, the cloth can be bleached efficiently and in a short time, and the wastewater discharged into the environment can be prevented from containing an organic halogen compound. The wastewater treatment process can be simplified by using, for example, microorganisms. It is possible to simplify the entire equipment and greatly reduce the maintenance cost of the equipment.
【図1】 本発明の一実施例に係わる漂白方法を採用し
た漂白装置が組込まれた染色工程を示す模式図FIG. 1 is a schematic view showing a dyeing process in which a bleaching apparatus employing a bleaching method according to an embodiment of the present invention is incorporated.
【図2】 本発明の他の実施例に係わる漂白方法を採用
した漂白装置が組込まれた染色工程を示す模式図FIG. 2 is a schematic view showing a dyeing process in which a bleaching apparatus employing a bleaching method according to another embodiment of the present invention is incorporated.
【図3】 本発明のさらに別の実施例に係わる漂白方法
を採用した漂白装置が組込まれた染色工程を示す模式図FIG. 3 is a schematic view showing a dyeing process in which a bleaching apparatus employing a bleaching method according to still another embodiment of the present invention is incorporated.
【図4】 従来の漂白装置が組込まれた染色工程を示す
模式図FIG. 4 is a schematic diagram showing a dyeing process in which a conventional bleaching device is incorporated.
1…原布、2…のり抜き工程、3…精練工程、4…膨脹
槽、5…ロール絞り・エアジェト吹き付け、6…オゾン
漂白槽、6A…加温ローラ、6B…紫外線照射装置、7
…オゾン発生装置、8…排オゾン分解装置、9…洗浄
槽、10…洗浄水、11…洗浄排水、12…絞りおよび
乾燥工程、13…染色工程、14…後処理工程、15…
仕上工程、16…製品布。DESCRIPTION OF SYMBOLS 1 ... Original cloth, 2 ... Demolding process, 3 ... Refining process, 4 ... Expansion tank, 5 ... Roll squeezing / air jet spraying, 6 ... Ozone bleaching tank, 6A ... Heating roller, 6B ... Ultraviolet irradiation device, 7
... ozone generator, 8 ... waste ozone decomposer, 9 ... washing tank, 10 ... washing water, 11 ... washing drainage, 12 ... squeezing and drying step, 13 ... dyeing step, 14 ... post-processing step, 15 ...
Finishing process, 16 ... Product cloth.
フロントページの続き (56)参考文献 特開 昭50−126997(JP,A) 特開 平7−11565(JP,A) 特開 平3−19961(JP,A) 特開 平9−31840(JP,A) (58)調査した分野(Int.Cl.7,DB名) D06L 1/00 - 3/16 D06B 1/00 - 23/30 C11D 1/00 - 19/00 D06M 10/00 - 11/84 Continuation of front page (56) References JP-A-50-126997 (JP, A) JP-A-7-11565 (JP, A) JP-A-3-19961 (JP, A) JP-A-9-31840 (JP) , A) (58) Fields investigated (Int. Cl. 7 , DB name) D06L 1/00-3/16 D06B 1/00-23/30 C11D 1/00-19/00 D06M 10/00-11 / 84
Claims (5)
整された水溶液を含浸することによって、前記布を水分
率30%以上60%以下に吸湿・膨潤させ、この吸湿・
膨潤させた布にオゾン含有ガスを接触させて漂白し、こ
の漂白の結果生じた酸を洗浄することを特徴とする布の
漂白方法。1. A by impregnating an aqueous solution adjusted to pH3 following organic acids cloth vegetable fibers, water the fabric
Rate of 30% or more and 60% or less.
A method for bleaching a fabric, comprising contacting an ozone-containing gas with a swollen fabric to bleach the fabric, and washing the acid resulting from the bleaching.
せた布にオゾン含有ガスを接触させて漂白し、この漂白
された後の布を紫外線照射し、この紫外線照射された布
から前記漂白の結果生じた酸を洗浄することを特徴とす
る布の漂白方法。 2. The cloth is allowed to absorb moisture and swell, and the moisture absorption and swelling
The bleached cloth is contacted with an ozone-containing gas and bleached.
The cloth after the irradiation is irradiated with ultraviolet light, and the cloth irradiated with the ultraviolet light
Washing the acid generated as a result of the bleaching.
How to bleach the fabric.
た水溶液を含浸することによって、前記布を吸湿・膨潤
させることを特徴とする請求項2記載の布の漂白方法。3. The method for bleaching a cloth according to claim 2 , wherein the cloth is absorbed and swelled by impregnating the cloth with an aqueous solution adjusted to pH 3 or less with an organic acid.
整された水溶液を含浸することによって、前記布を水分
率30%以上60%以下に吸湿・膨潤させる膨潤槽と、
オゾン含有ガスを発生するオゾン発生装置と、前記膨潤
槽にて吸湿・膨潤された布に前記オゾン発生装置にて発
生されたオゾン含有ガスを接触させて漂白するオゾン漂
白槽と、このオゾン漂白槽における漂白の結果生じた酸
を布から洗浄する洗浄槽とを備えたことを特徴とする布
の漂白装置。4. by impregnating an aqueous solution adjusted to pH3 following organic acids cloth vegetable fibers, water the fabric
A swelling tank that absorbs and swells at a rate of 30% to 60% ,
An ozone generator for generating an ozone-containing gas, an ozone bleaching tank for causing the ozone-containing gas generated by the ozone generator to come into contact with the cloth absorbed and swollen in the swelling tank, and an ozone bleaching tank And a washing tank for washing the acid generated as a result of the bleaching from the cloth.
溶液を含浸することによって、前記布を吸湿・膨潤させ
る膨潤槽と、オゾン含有ガスを発生するオゾン発生装置
と、前記膨潤槽にて吸湿・膨潤された布に前記オゾン発
生装置にて発生されたオゾン含有ガスを接触させて漂白
するオゾン漂白槽と、このオゾン漂白槽でオゾン含有ガ
スを接触させた後の布を紫外線照射する紫外線照射装置
と、この紫外線照射装置で紫外線照射された布から前記
漂白の結果生じた酸を洗浄する洗浄槽とを備えたことを
特徴とする布の漂白装置。5. A swelling tank for absorbing and swelling the cloth by impregnating the cloth with an aqueous solution adjusted to pH 3 or less with an organic acid, an ozone generator for generating an ozone-containing gas, and the swelling tank. An ozone bleaching tank for bringing the ozone-containing gas generated by the ozone generator into contact with the moisture-absorbed and swollen cloth for bleaching; What is claimed is: 1. A cloth bleaching apparatus comprising: an irradiation device; and a washing tank for washing an acid generated as a result of the bleaching from the cloth irradiated with ultraviolet light by the ultraviolet irradiation device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00314594A JP3265102B2 (en) | 1994-01-17 | 1994-01-17 | Cloth bleaching method and apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00314594A JP3265102B2 (en) | 1994-01-17 | 1994-01-17 | Cloth bleaching method and apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07207572A JPH07207572A (en) | 1995-08-08 |
JP3265102B2 true JP3265102B2 (en) | 2002-03-11 |
Family
ID=11549193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP00314594A Expired - Fee Related JP3265102B2 (en) | 1994-01-17 | 1994-01-17 | Cloth bleaching method and apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3265102B2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1072762A (en) * | 1996-08-23 | 1998-03-17 | Oshima Kikai Kk | Modification of fiber with ozone |
DE60221160D1 (en) * | 2002-05-17 | 2007-08-23 | Howa K K | TEXTILING DYEING DEVICE AND METHOD |
WO2008105132A1 (en) * | 2007-02-27 | 2008-09-04 | Shigenori Aono | Process for producing bleached fiber product, apparatus for use therein, and thus obtained bleached fiber product |
WO2008105108A1 (en) * | 2007-02-27 | 2008-09-04 | Shigenori Aono | Process for production of bleached textile materials, equipment to be used in the process, and bleached textile materials obtained by the process |
WO2014107142A1 (en) * | 2013-01-03 | 2014-07-10 | Ataç Elektri̇k Ve Maki̇na Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ | A fabric-yarn wet treatment machine with recycling waste water |
CN106637908A (en) * | 2016-11-02 | 2017-05-10 | 江南大学 | Method for performing gas bleaching on linen fabric by ozone |
ES2953291T3 (en) * | 2020-07-01 | 2023-11-10 | Jeanologia Sl | Method and apparatus for treating a textile fabric |
-
1994
- 1994-01-17 JP JP00314594A patent/JP3265102B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07207572A (en) | 1995-08-08 |
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