JP2003253138A - Method for manufacturing plastic molded article mixed with incineration ash of papermaking sludge - Google Patents
Method for manufacturing plastic molded article mixed with incineration ash of papermaking sludgeInfo
- Publication number
- JP2003253138A JP2003253138A JP2002060178A JP2002060178A JP2003253138A JP 2003253138 A JP2003253138 A JP 2003253138A JP 2002060178 A JP2002060178 A JP 2002060178A JP 2002060178 A JP2002060178 A JP 2002060178A JP 2003253138 A JP2003253138 A JP 2003253138A
- Authority
- JP
- Japan
- Prior art keywords
- incineration ash
- papermaking sludge
- sludge incineration
- plastic
- papermaking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は製紙スラッジ焼却灰
混合プラスチック成形品の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a papermaking sludge incineration ash mixed plastic molded product.
【０００２】[0002]
【従来の技術】製紙工場にあっては、パルプ漂白工程、
抄紙工程等から大量の排水が排出される。この排水は凝
集沈澱法、生物学的処理方法等によって処理されるが、
上記排水処理工程から発生したスラッジ（以下製紙スラ
ッジと称する）は、通常フィルタープレス等によって脱
水した後焼却処理される。従来、該製紙スラッジの焼却
灰はセメント等の骨材として再利用されているものもあ
るが、大半は埋立て処理されている。2. Description of the Related Art In a paper mill, a pulp bleaching process,
A large amount of wastewater is discharged from the papermaking process. This wastewater is treated by coagulation sedimentation method, biological treatment method, etc.
The sludge generated from the wastewater treatment process (hereinafter referred to as papermaking sludge) is usually dehydrated by a filter press or the like and then incinerated. Conventionally, the incinerated ash of the papermaking sludge has been reused as an aggregate such as cement, but most of it is landfilled.
【０００３】[0003]
【発明が解決しようとする課題】製紙スラッジは大量発
生し、したがってその焼却灰も大量に得られる。しかし
セメントの骨材等に再利用するだけでは、再利用率が低
く、余剰焼却灰は埋立て処分に回される。しかし焼却灰
を埋立て処分に回すと、埋立て処分場の確保の問題や、
埋立て処理費用が高いなどの問題点がある。本発明は上
記従来の問題点を解決して製紙スラッジを有効利用する
新規な方法を提供することを目的とする。A large amount of papermaking sludge is generated, and therefore a large amount of incinerated ash is also obtained. However, the reuse rate is low and the excess incinerated ash is sent to landfill just by recycling it to the aggregate of cement. However, when the incinerated ash is sent to landfill disposal, the problem of securing landfill disposal sites,
There are problems such as high landfill costs. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems and provide a new method for effectively utilizing papermaking sludge.
【０００４】[0004]
【課題を解決するための手段】前記課題は、製紙スラッ
ジ焼却灰を充填材としてプラスチックに混合し、製紙ス
ラッジ焼却灰混合プラスチック成形品を成形する製造方
法により解決される。前記製紙スラッジ焼却灰はプラス
チック１００質量部に対して２０〜８０質量部添加され
ていることが望ましい。また該プラスチックは再生熱可
塑性プラスチックであること望ましい。更に該製紙スラ
ッジはパルプ漂白工程から排出される排水の処理工程か
ら発生するスラッジであることが望ましく、また該パル
プ漂白工程はＥＣＦ漂白工程であることが望ましい。ま
た該製紙スラッジ焼却灰はパルプ漂白工程から排出され
る排水に塩化第１鉄を使用する凝集沈殿法によって生成
するスラッジを焼却することによって得られる木材調色
のものであることが望ましく、該製紙スラッジ焼却灰に
は、水分を含まない乾燥状態で、酸化第２鉄が５〜３０
質量％含有されていることが望ましい。また該前記製紙
スラッジ焼却灰は水分を含まない乾燥状態で、含有塩素
分が３質量％以下であることが望ましい。本発明を以下
に詳細に説明する。The above problems can be solved by a manufacturing method in which papermaking sludge incineration ash is mixed with plastic as a filler to form a papermaking sludge incineration ash mixed plastic molded product. The papermaking sludge incineration ash is preferably added in an amount of 20 to 80 parts by mass with respect to 100 parts by mass of plastic. It is also desirable that the plastic is recycled thermoplastic. Further, the papermaking sludge is preferably sludge generated from a treatment process of wastewater discharged from the pulp bleaching process, and the pulp bleaching process is preferably an ECF bleaching process. Further, it is desirable that the papermaking sludge incineration ash is a wood-toning product obtained by incinerating sludge produced by a coagulation sedimentation method using ferrous chloride in wastewater discharged from the pulp bleaching step. The sludge incineration ash contains 5 to 30 ferric oxide in a dry state containing no water.
It is desirable that the content be% by mass. Further, it is desirable that the papermaking sludge incineration ash in a dry state containing no water has a chlorine content of 3% by mass or less. The present invention is described in detail below.
【０００５】[0005]
【発明の実施の形態】〔製紙スラッジ焼却灰〕本発明に
おいて対象とする製紙スラッジは、パルプ漂白工程や抄
紙工程から排出される排水の凝集沈澱処理、生物学的処
理等によって処理する際に発生するものである。該製紙
スラッジは例えば流動床炉やストーカー炉等の焼却炉で
焼却される。BEST MODE FOR CARRYING OUT THE INVENTION [Papermaking sludge incineration ash] The papermaking sludge targeted in the present invention is generated when the wastewater discharged from a pulp bleaching process or a papermaking process is treated by coagulation-sedimentation treatment, biological treatment, etc. To do. The papermaking sludge is incinerated in an incinerator such as a fluidized bed furnace or a stalker furnace.
【０００６】望ましい焼却灰としては、パルプ漂白工程
それもＥＣＦ（ＥｌｅｍｅｎｔａｌＣｈｌｏｒｉｎｅ
Ｆｒｅｅ）漂白工程から排出される排水の凝集沈澱処理
から発生した製紙スラッジの焼却灰である。A desirable incineration ash is a pulp bleaching process or ECF (Elemental Chlorine).
Free) Incinerated ash of papermaking sludge generated from coagulation and sedimentation treatment of wastewater discharged from the bleaching process.
【０００７】ＥＣＦ漂白工程にあっては、漂白剤として
元素塩素を使用せず、従来漂白剤として使用されている
塩素の代替薬品として二酸化塩素が用いられ、次亜塩素
酸塩の代替として過酸化水素が用いれることが多い。即
ちＥＣＦ漂白工程にあっては、通常前段二酸化塩素処理
（Ｄ１）→カセイソーダ／酸素処理（Ｅ／Ｏ）→過酸化
水素の処理（Ｐ）→後段二酸化塩素処理（Ｄ２）の四工
程の処理が行われる。そして前段二酸化塩素処理（Ｄ
１）工程からは酸性排水が排出され、カセイソーダ／酸
素処理（Ｅ／Ｏ）工程からはアルカリ排水が排出され
る。In the ECF bleaching process, elemental chlorine is not used as a bleaching agent, but chlorine dioxide is used as a substitute chemical for chlorine conventionally used as a bleaching agent, and peroxide is used as a substitute for hypochlorite. Hydrogen is often used. That is, in the ECF bleaching process, there are usually four steps: the first-stage chlorine dioxide treatment (D1) → caustic soda / oxygen treatment (E / O) → hydrogen peroxide treatment (P) → second-stage chlorine dioxide treatment (D2). Done. And the previous stage chlorine dioxide treatment (D
Acid wastewater is discharged from the step 1), and alkaline wastewater is discharged from the caustic soda / oxygen treatment (E / O) step.
【０００８】そこでＥＣＦ漂白工程から排出される排水
の処理にあたっては、Ｄ１工程の酸性排水とＥ／Ｏ工程
のアルカリ排水とを混合し、塩化第１鉄を添加後、消石
灰、炭酸ソーダ等のｐＨ調節剤によってｐＨを８．０以
上望ましくは１２以下に調節した上で、ポリアクリルア
ミド、ポリアクリル酸ソーダ等の有機高分子凝集剤を添
加して排水中に含まれている環境汚染物質を効率良く凝
集させる凝集沈澱法が望ましい。この方法ではフロック
の凝集性が改善され、沈降槽において容易にフロックを
分離することが出来る。このような方法にあっては製紙
スラッジ中の塩素分が通常より少なく、適切に管理され
た焼却炉ではダイオキシン類が発生しにくい。また該製
紙スラッジの焼却灰には酸化第２鉄が含まれているので
木材調色を帯び、これを混合したプラスチック成形品は
木材調色を呈すると云う利点がある。Therefore, in treating the wastewater discharged from the ECF bleaching step, the acidic wastewater of the D1 step and the alkaline wastewater of the E / O step are mixed, and after adding ferrous chloride, the pH of slaked lime, sodium carbonate, etc. is added. After adjusting the pH to 8.0 or more, preferably 12 or less with a regulator, add an organic polymer coagulant such as polyacrylamide or sodium polyacrylate to efficiently remove environmental pollutants contained in wastewater. A flocculation-precipitation method in which flocculation is performed is desirable. In this method, floc cohesiveness is improved and flocs can be easily separated in the sedimentation tank. With such a method, the chlorine content in the papermaking sludge is lower than usual, and dioxins are less likely to be generated in an appropriately controlled incinerator. Further, since the incineration ash of the papermaking sludge contains ferric oxide, it has a wood toning effect, and a plastic molded product obtained by mixing this has an advantage that it exhibits a wood toning effect.
【０００９】また、該製紙スラッジの焼却灰に含まれる
塩素分は、水分を含まない乾燥状態で３質量％以下であ
るとダイオキシン類の発生が少ないだけでなく、製造し
たプラスチック成形品中の塩素分が少なくなるので好ま
しい。When the content of chlorine contained in the incineration ash of the papermaking sludge is 3% by mass or less in a dry state containing no water, not only dioxins are less generated, but also chlorine contained in the plastic molded product produced. It is preferable because the amount is reduced.
【００１０】更に、該製紙スラッジの焼却灰に含まれる
酸化第２鉄は、水分を含まない乾燥状態で５〜３０質量
％含有されていることが好ましい。５質量％未満では得
られるプラスチック成形品の木材調色が充分でなく、３
０質量％を越えると凝集沈殿工程における塩化第１鉄の
作用の点で添加量が過剰であり好ましくない。なおクラ
フトパルプ漂白工程の排水処理において、鉄イオンを溶
解せしめる技術に関しては、本出願人が特開平４−２０
０６９３号公報（特許第２５５８１７９号）において開
示している。Further, the ferric oxide contained in the incineration ash of the papermaking sludge is preferably contained in an amount of 5 to 30% by mass in a dry state containing no water. If the amount is less than 5% by mass, the wood color tone of the obtained plastic molded product is not sufficient.
If it exceeds 0% by mass, the amount added is excessive from the viewpoint of the action of ferrous chloride in the coagulation-precipitation step, which is not preferable. Regarding the technique for dissolving iron ions in the wastewater treatment in the kraft pulp bleaching process, the present applicant has proposed Japanese Patent Application Laid-Open No. 4-20.
This is disclosed in Japanese Patent Publication No. 0693 (Japanese Patent No. 2558179).
【００１１】本発明にあっては、上記方法によって得ら
れる製紙スラッジの他、塩素および次亜塩酸塩を使用す
る一般のパルプ漂白工程や抄紙工程から排出される排水
に無機および／または有機凝集剤を添加してフロックを
生成させる一般的な凝集沈澱法、あるいは上記排水の生
物学的処理から発生する製紙スラッジも対象となること
は云うまでもない。In the present invention, in addition to the papermaking sludge obtained by the above-mentioned method, inorganic and / or organic flocculants are added to the wastewater discharged from general pulp bleaching processes and papermaking processes using chlorine and hypochlorite. It goes without saying that a general coagulation-sedimentation method for adding flocs to produce flocs, or a papermaking sludge generated from the biological treatment of the above-mentioned wastewater is also applicable.
【００１２】上記製紙スラッジは例えばフィルタープレ
ス、スクリュープレス等の脱水機によって通常水分含有
量を６０質量％以下に脱水された上で前記したように流
動床炉やストーカー炉等の公知の焼却炉によって焼却さ
れるが、焼却温度は通常８５０〜９００℃程度とされ
る。焼却灰はサイクロンやバグフィルター等の集塵装置
により捕集され、通常５〜３００μｍ程度の粒径であ
り、何れもプラスチック成形品の充填材として使用可能
である。The above papermaking sludge is usually dehydrated to a water content of 60% by mass or less by a dehydrator such as a filter press or a screw press, and then subjected to a known incinerator such as a fluidized bed furnace or a stalker furnace as described above. Although it is incinerated, the incineration temperature is usually about 850 to 900 ° C. The incinerated ash is collected by a dust collector such as a cyclone or a bag filter, and usually has a particle size of about 5 to 300 μm, and any of them can be used as a filler for plastic molded products.
【００１３】〔プラスチック〕上記製紙スラッジ焼却灰
は充填材としてプラスチックに混合される。本発明の対
象となるプラスチックとしては、例えばポリスチレン
（ＰＳ）、耐衝撃性ポリスチレン（ＨＩＰＳ）、アクリ
ロニトリルスチレン（ＡＳ）、アクリロニトリル−ブタ
ジエン−スチレン（ＡＢＳ）、ポリエチレン（ＰＥ）、
ポリプロピレン（ＰＰ）、ポリ塩化ビニル（ＰＶＣ）、
ポリエチレンテレフタレート（ＰＥＴ）等の熱可塑性プ
ラスチック、ポリウレタン、メラミン樹脂、尿素樹脂、
ポリアミド樹脂、ポリエステル樹脂、フェノール樹脂、
エポキシ樹脂等の熱硬化性プラスチックがある。また熱
可塑性プラスチックの場合には、該熱可塑性プラスチッ
クを材料とした成形品の廃材から得られる再生熱可塑性
プラスチックも使用可能である。[Plastic] The papermaking sludge incineration ash is mixed with plastic as a filler. Examples of plastics to which the present invention is applied include polystyrene (PS), high-impact polystyrene (HIPS), acrylonitrile styrene (AS), acrylonitrile-butadiene-styrene (ABS), polyethylene (PE),
Polypropylene (PP), polyvinyl chloride (PVC),
Thermoplastics such as polyethylene terephthalate (PET), polyurethane, melamine resin, urea resin,
Polyamide resin, polyester resin, phenol resin,
There are thermosetting plastics such as epoxy resin. Further, in the case of thermoplastics, recycled thermoplastics obtained from waste materials of molded products made of the thermoplastics can also be used.
【００１４】上記プラスチックに製紙スラッジ焼却灰を
混合して成形材料とするには熱可塑性プラスチック粉末
に該製紙スラッジ焼却灰を混合し、該混合物をそのまゝ
成形材料とする方法、該混合物をペレット化して成形材
料とする方法、熱硬化性プラスチックの場合には該熱硬
化性プラスチックのモノマー、オリゴマー、プレポリマ
ー等の前躯体に該製紙スラッジ焼却灰を添加混合する。In order to form a molding material by mixing papermaking sludge incineration ash with the above plastic, a method of mixing the papermaking sludge incineration ash with a thermoplastic powder and using the mixture as the molding material, the mixture is pelletized. In the case of thermosetting plastics, in the case of thermosetting plastics, the papermaking sludge incineration ash is added and mixed to the precursors of the thermosetting plastics such as monomers, oligomers and prepolymers.
【００１５】上記製紙スラッジ焼却灰の混合量は通常プ
ラスチック１００質量部に対して２０〜８０質量部とす
る。上記範囲に満たない添加量では焼却灰の消費効率が
低くなるし、また成形品の寸法安定性や機械的強度を向
上せしめる充填材効果も顕着ではなく、上記範囲を越え
る添加量では成形性が低下するおそれがあり、かつ成形
品の機械的強度も劣化するおそれがある。The amount of the papermaking sludge incineration ash to be mixed is usually 20 to 80 parts by mass with respect to 100 parts by mass of plastic. If the amount added is less than the above range, the incineration ash consumption efficiency will be low, and the effect of the filler that improves the dimensional stability and mechanical strength of the molded product will not be noticeable. And the mechanical strength of the molded product may deteriorate.
【００１６】上記焼却灰以外、例えば炭酸カルシウム、
炭酸マグネシウム、硫酸バリウム、硫酸カルシウム、亜
硫酸カルシウム、燐酸カルシウム、水酸化カルシウム、
水酸化マグネシウム、水酸化アルミニウム、酸化マグネ
シウム、酸化チタン、酸化鉄、酸化亜鉛、アルミナ、シ
リカ、ケイ藻土、ドロマイト、石膏、タルク、クレー、
アスベスト、マイカ、ガラス繊維、ケイ酸カルシウム、
ベンナイト、ホワイトカーボン、カーボンブラック、鉄
粉、アルミニウム粉、石粉、高炉スラグ、フライアッシ
ュ、セメント、ジルコニア粉等の無機充填材、木綿、
麻、羊毛等の天然繊維、ポリアミド繊維、ポリエステル
繊維、アクリル繊維、ビスコース繊維、アセテート繊
維、塩化ビニル繊維、塩化ビニリデン繊維等の有機合成
繊維、ガラス繊維、炭素繊維、セラミック繊維、金属繊
維、ウィスカー等の無機繊維、リンター、リネン、サイ
ザル、木粉、ヤシ粉、クルミ粉、でん粉、小麦粉等の有
機充填材、更に紫外線吸収剤、老化防止剤、難燃剤等が
適宜添加されてもよい。Other than the above-mentioned incinerated ash, for example, calcium carbonate,
Magnesium carbonate, barium sulfate, calcium sulfate, calcium sulfite, calcium phosphate, calcium hydroxide,
Magnesium hydroxide, aluminum hydroxide, magnesium oxide, titanium oxide, iron oxide, zinc oxide, alumina, silica, diatomaceous earth, dolomite, gypsum, talc, clay,
Asbestos, mica, glass fiber, calcium silicate,
Bennite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement, inorganic fillers such as zirconia powder, cotton,
Natural fibers such as hemp and wool, polyamide fibers, polyester fibers, acrylic fibers, viscose fibers, acetate fibers, vinyl chloride fibers, vinylidene chloride fibers and other organic synthetic fibers, glass fibers, carbon fibers, ceramic fibers, metal fibers, whiskers Inorganic fibers such as, organic fillers such as linters, linen, sisal, wood flour, coconut flour, walnut flour, starch, and wheat flour, as well as ultraviolet absorbers, antiaging agents, flame retardants, and the like may be appropriately added.
【００１７】〔成形〕上記プラスチックと上記製紙スラ
ッジ焼却灰とを含む成形材料は、例えば射出成形、押出
成形、プレス成形、鋳込成形あるいは押出成形やカレン
ダー成形によってシート状に成形した上で真空および／
または圧空成形、ブロー成形、プレス成形等によって成
形される。[Molding] A molding material containing the plastic and the papermaking sludge incineration ash is molded into a sheet by, for example, injection molding, extrusion molding, press molding, cast molding or extrusion molding or calender molding, and then vacuum and /
Alternatively, it is molded by pressure molding, blow molding, press molding or the like.
【００１８】上記プラスチックは発泡成形されてもよ
い。この場合には発泡剤を添加して発泡射出成形、発泡
押出成形、発泡鋳込成形、発泡押出成形等によって発泡
シートに成形した上で真空および／または圧空成形、ブ
ロー成形、プレス成形する方法が適用される。使用され
る発泡剤としては例えば炭酸水素ナトリウム、炭酸ナト
リウム等の無機発泡剤、２，２’−アゾビスイソブチロ
ニトリル、ｐ，ｐ’−オキシビス（ベンゼンスルホニル
ヒドラジド）、ｐ，ｐ’−オキシビス（ベンゼンスルホ
ニルセミカルバジド）、Ｎ・Ｎ−ジメチル−Ｎ，Ｎ−ジ
ニトロソテレフタルアミド、ジアゾアミノベンゼン、ア
ゾジカルボンアミド、ヒドラゾジカルボンアミド、１・
１−アゾビスホルムアミド等の有機発泡剤がある。The above plastic may be foam-molded. In this case, a method in which a foaming agent is added to form a foamed sheet by foaming injection molding, foaming extrusion molding, foaming casting molding, foaming extrusion molding, etc., and then vacuum and / or pressure molding, blow molding, and press molding is used. Applied. Examples of the foaming agent used include inorganic foaming agents such as sodium hydrogen carbonate and sodium carbonate, 2,2′-azobisisobutyronitrile, p, p′-oxybis (benzenesulfonylhydrazide), p, p′-oxybis. (Benzenesulfonyl semicarbazide), N · N-dimethyl-N, N-dinitrosoterephthalamide, diazoaminobenzene, azodicarbonamide, hydrazodicarbonamide, 1 ·
There are organic foaming agents such as 1-azobisformamide.
【００１９】〔実施例１〕ＨＩＰＳ成形品の廃材を粉砕
し、該粉砕物１００質量部に対し、製紙スラッジ焼却灰
を４０質量部添加する。この製紙スラッジ焼却灰はパル
プのＥＣＦ漂白工程から排出される排水を塩化第１鉄を
使用する凝集沈殿法によって処理し、生成されたスラッ
ジを焼却して得たものである。更に、この混合物にアゾ
ジカルボンアミド３質量部を添加した。なお前記製紙ス
ラッジ焼却灰は下記の組成であったが、これは一例であ
り、この組成に限定されないことは勿論のことである。
＜製紙スラッジ焼却灰の組成＞
ＣａＯ ２７．８質量％
ＳｉＯ2 ２５．２ 〃
Ｆｅ2 Ｏ3 ２２．２ 〃
Ａｌ2 Ｏ3 １２．０ 〃
ＴｉＯ2 ４．４ 〃
ＺｎＯ １．９ 〃
Ｐ2 Ｏ5 １．６ 〃
ＳＯ3 １．２ 〃
ＭｇＯ １．１ 〃
Ｃｌ ０．９６〃
Ｋ2 Ｏ ０．４４〃
その他 １．２０〃Example 1 Waste material of a HIPS molded product was crushed, and 40 parts by mass of papermaking sludge incineration ash was added to 100 parts by mass of the crushed product. This papermaking sludge incineration ash is obtained by treating wastewater discharged from the ECF bleaching process of pulp by a coagulation sedimentation method using ferrous chloride, and incinerating the generated sludge. Furthermore, 3 parts by mass of azodicarbonamide was added to this mixture. The paper ash sludge incineration ash had the following composition, but this is an example, and it goes without saying that the composition is not limited to this. <Composition of papermaking sludge incineration ash> CaO 27.8 mass% SiO 2 25.2 〃 Fe 2 O 3 22.2 〃 Al 2 O 3 12.0 〃 TiO 2 4.4 〃 ZnO 1.9 〃 P 2 O 5 1.6 〃 SO 3 1.2 〃 MgO 1.1 〃 Cl 0.96 〃 K 2 O 0.44 〃 Others 1.20 〃
【００２０】上記混合物を２３０℃に加熱溶融し、発泡
押出し成形によって厚み１０mmのパネル状成形物を成形
した。上記パネル状成形物は木材調の色調を有し、人工
木材として建築物の壁材、床材等に有用である。The above mixture was heated and melted at 230 ° C., and a panel-shaped molded product having a thickness of 10 mm was molded by foaming extrusion molding. The panel-shaped molded product has a wood-like color tone, and is useful as a wall material, floor material, etc. for buildings as artificial wood.
【００２１】〔実施例２〕ＡＢＳ成形品の廃材を粉砕
し、該粉砕物とバージンＡＢＳ粉末とを１：１質量比に
混合し、該混合物１００質量部に対し、実施例１の製紙
スラッジ焼却灰を３０質量部添加し、該混合物を１５０
℃で加熱溶融押出しつゝ、ペレタイザーによってペレッ
ト化した上で射出成形により、テレビキャビネットを成
形した。このキャビネットは木材調の好ましい外観を有
する。[Example 2] A waste material of an ABS molded product was crushed, and the crushed product and virgin ABS powder were mixed in a ratio of 1: 1 by mass, and 100 parts by mass of the mixture was incinerated for papermaking sludge in Example 1. Add 30 parts by weight of ash and add 150 parts of the mixture.
A television cabinet was molded by injection molding after being melt-extruded at 0 ° C., pelletized by a pelletizer. The cabinet has a pleasing woody appearance.
【００２２】〔実施例３〕メラミン樹脂プレポリマー粉
末１００質量部に対し、製紙スラッジ焼却灰を５０質量
部混合し、１８０℃でプレス成形してボタンを製造し
た。該製紙スラッジ焼却灰は抄紙工程からの排水を生物
学的処理して得られたスラッジを焼却処理したものであ
る。該ボタンは木材調でありデザイン的に望ましいもの
である。Example 3 50 parts by mass of papermaking sludge incineration ash was mixed with 100 parts by mass of melamine resin prepolymer powder, and press-molded at 180 ° C. to manufacture a button. The papermaking sludge incineration ash is obtained by incinerating sludge obtained by biologically treating wastewater from the papermaking process. The button is wood-like and desirable in design.
【００２３】[0023]
【発明の効果】製紙スラッジ焼却灰を充填材としてプラ
スチックに混合して、プラスチック成形品を製造し、建
材等に有効利用することにより、製紙スラッジの埋立て
処分場の確保や、埋立て処理の手間を省くことが出来
る。また、プラスチックの性状や、製紙スラッジ焼却灰
の混合比率、製紙スラッジ焼却灰の粒径等を適切に選定
することにより、成形性や、成形品の機械的性質等に悪
影響を及ぼさず、良好なプラスチック成形品を得ること
が出来る。更にまた、パルプ漂白工程特にＥＣＦ漂白工
程から排出される排水を塩化第１鉄を用いた凝集沈殿法
によって処理し、得られる製紙スラッジを焼却して得た
焼却灰は木材調色であり、これを添加した原料から製造
したプラスチック成形品、特に発泡射出成形によるプラ
スチック成形品は木材のような色調を有し、人工木材と
して外壁材、内壁材、床材、天井材等として有用であ
る。また、ＥＣＦ漂白工程から排出される排水を処理し
焼却して得た製紙スラッジ焼却灰は、塩素分の含有量が
少なく、これを用いて製造されるプラスチック成形品は
品質上からも好ましいものである。[Effects of the Invention] By mixing paper ash sludge incineration ash as a filler to produce plastic molded products and making effective use in building materials, etc., a landfill disposal site for papermaking sludge can be secured and landfill treatment can be performed. You can save time. In addition, by properly selecting the properties of plastics, the mixing ratio of papermaking sludge incineration ash, and the particle size of papermaking sludge incineration ash, there is no adverse effect on moldability and mechanical properties of molded products, and good results are obtained. It is possible to obtain a plastic molded product. Furthermore, the incineration ash obtained by treating the wastewater discharged from the pulp bleaching step, especially the ECF bleaching step by the coagulation sedimentation method using ferrous chloride and incinerating the resulting papermaking sludge has a wood toning color. A plastic molded product produced from a raw material added with, especially a plastic molded product obtained by foaming injection molding, has a color tone like wood, and is useful as an outer wall material, an inner wall material, a floor material, a ceiling material or the like as artificial wood. Further, the papermaking sludge incineration ash obtained by treating and incinerating the wastewater discharged from the ECF bleaching process has a low chlorine content, and the plastic molded product produced using this is preferable in terms of quality. is there.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０８Ｊ 5/00 ＣＥＺ Ｃ０８Ｋ 3/00 Ｃ０８Ｋ 3/00 Ｂ０９Ｂ 3/00 ＺＡＢ (72)発明者 諸岡 弘純 三重県鈴鹿市国府町7678−21 マルワ化成 株式会社内 (72)発明者 高西 謙 愛知県春日井市王子町１番地 王子製紙株 式会社春日井工場内 (72)発明者 小林 英生 愛知県春日井市王子町１番地 王子製紙株 式会社春日井工場内 (72)発明者 平井 禎樹 愛知県春日井市王子町１番地 王子製紙株 式会社春日井工場内 Ｆターム(参考） 4D004 AA36 BA02 CA04 CA14 CA15 CA23 CA45 CB13 CB16 CB21 CB32 CC17 DA03 DA10 4F071 AA01 AA12X AA22 AA22X AA34X AA41 AA75 AA76 AB16 AB32 AE01 AH03 AH12 BB03 BB05 BB06 BC03 BC07 4J002 BB021 BB111 BC021 BC031 BC061 BD031 BN041 BN151 CC031 CC161 CC181 CD001 CF001 CF061 CK021 CL001 DE006 DM006 FD010 FD016 FD320 GL00 GL01 GQ00─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C08J 5/00 CEZ C08K 3/00 C08K 3/00 B09B 3/00 ZAB (72) Inventor Hirozumi Morooka Mie 7768-21 Kokufu-cho, Suzuka-shi, Japan Maru Kasei Co., Ltd. (72) Inventor Ken Takanishi 1 Oji-cho, Kasugai-shi, Aichi Prefecture Kasugai Mill, Oji Paper Co., Ltd. (72) Inventor Hideo Kobayashi Oji-cho, Kasugai-shi, Aichi No. 1 Oji Paper Co., Ltd. Kasugai Factory (72) Inventor Sadaki Hirai No. 1 Ojimachi, Kasugai-shi, Aichi Prefecture Kasugai Factory F-term (Reference) 4D004 AA36 BA02 CA04 CA14 CA15 CA23 CA45 CB13 CB16 CB21 CB32 CC17 DA03 DA10 4F071 AA01 AA12X AA22 AA22X AA34X AA41 AA75 AA76 AB16 AB32 AE01 AH03 AH12 BB03 BB05 BB06 BC03 BC07 4J002 BB021 BB111 BC021 BC03 1 BC061 BD031 BN041 BN151 CC031 CC161 CC181 CD001 CF001 CF061 CK021 CL001 DE006 DM006 FD010 FD016 FD320 GL00 GL01 GQ00
Claims (8)
チックに混合し成形することを特徴とする製紙スラッジ
焼却灰混合プラスチック成形品の製造方法。1. A method for producing a plastic molded article containing paper-made sludge incineration ash, which comprises mixing paper-made sludge incinerated ash as a filler with plastic and molding.
００質量部に対して２０〜８０質量部添加されているこ
とを特徴とする請求項１に記載の製紙スラッジ焼却灰混
合プラスチック成形品の製造方法。2. The papermaking sludge incineration ash is plastic 1
20-80 mass parts is added with respect to 00 mass parts, The manufacturing method of the papermaking sludge incineration ash mixed plastics molded article of Claim 1 characterized by the above-mentioned.
ックであることを特徴とする請求項１または２に記載の
製紙スラッジ焼却灰混合プラスチック成形品の製造方
法。3. The method for producing a papermaking sludge incineration ash mixed plastic molded product according to claim 1 or 2, wherein the plastic is a recycled thermoplastic.
出される排水の処理工程から発生するスラッジであるこ
とを特徴とする請求項１〜３のいずれか１項に記載の製
紙スラッジ焼却灰混合プラスチック成形品の製造方法。4. The papermaking sludge incineration ash mixed plastic according to any one of claims 1 to 3, wherein the papermaking sludge is sludge generated in a treatment process of wastewater discharged from a pulp bleaching process. Molded article manufacturing method.
ることを特徴とする請求項４に記載の製紙スラッジ焼却
灰混合プラスチック成形品の製造方法。5. The method for producing a papermaking sludge incineration ash mixed plastic molded article according to claim 4, wherein the pulp bleaching step is an ECF bleaching step.
から排出される排水に塩化第１鉄を使用する凝集沈殿法
によって生成するスラッジを焼却することによって得ら
れる木材調色のものであることを特徴とする請求項４ま
たは５に記載の製紙スラッジ焼却灰混合プラスチック成
形品の製造方法。6. The paper-made sludge incineration ash is a wood-colored product obtained by incinerating sludge produced by a coagulation-sedimentation method using ferrous chloride in wastewater discharged from a pulp bleaching step. The method for producing a papermaking sludge incineration ash mixed plastic molded product according to claim 4 or 5.
が５〜３０質量％含有されていることを特徴とする請求
項６に記載の製紙スラッジ焼却灰混合プラスチック成形
品の製造方法。7. The method for producing a plastic-molded article made from paper-made sludge incineration ash according to claim 6, wherein the paper-made sludge incinerated ash contains 5 to 30 mass% ferric oxide.
３質量％以下であることを特徴とする請求項５〜７のい
ずれか１項に記載の製紙スラッジ焼却灰混合プラスチッ
ク成形品の製造方法。8. The papermaking sludge incineration ash-mixed plastic molded product according to any one of claims 5 to 7, wherein the papermaking sludge incineration ash has a chlorine content of 3 mass% or less. Method.
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| JP2002060178A JP3958073B2 (en) | 2002-03-06 | 2002-03-06 | Manufacturing method of papermaking sludge incineration ash mixed plastic molding |
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| JP2002060178A JP3958073B2 (en) | 2002-03-06 | 2002-03-06 | Manufacturing method of papermaking sludge incineration ash mixed plastic molding |
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| JP3958073B2 JP3958073B2 (en) | 2007-08-15 |
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|---|---|---|---|
| JP2002060178A Expired - Fee Related JP3958073B2 (en) | 2002-03-06 | 2002-03-06 | Manufacturing method of papermaking sludge incineration ash mixed plastic molding |
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