JPS631882B2 - - Google Patents
Info
- Publication number
- JPS631882B2 JPS631882B2 JP17638881A JP17638881A JPS631882B2 JP S631882 B2 JPS631882 B2 JP S631882B2 JP 17638881 A JP17638881 A JP 17638881A JP 17638881 A JP17638881 A JP 17638881A JP S631882 B2 JPS631882 B2 JP S631882B2
- Authority
- JP
- Japan
- Prior art keywords
- waste ink
- pigment
- solvent
- ink
- concentration
- 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
Links
- 239000000049 pigment Substances 0.000 claims description 47
- 239000002699 waste material Substances 0.000 claims description 35
- 239000002904 solvent Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 10
- 238000007865 diluting Methods 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000000976 ink Substances 0.000 description 44
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- -1 cyclohexanone Chemical compound 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Extraction Or Liquid Replacement (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
【発明の詳細な説明】
本発明は廃インキ中から有価物として顔料を回
収する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for recovering pigments as valuable materials from waste ink.
印刷工場、インキ製造工場等からは、比較的多
量の使用済みインキ（以下、廃インキという）が
出る。 Printing factories, ink manufacturing factories, etc. produce relatively large amounts of used ink (hereinafter referred to as waste ink).
これら廃インキには、溶剤、顔料、染料等の有
価物が含まれているが、これら有価物の回収は溶
剤を除き極めて困難であり、従来は焼却処分され
ていた。 Although these waste inks contain valuables such as solvents, pigments, and dyes, it is extremely difficult to recover these valuables except for the solvent, and conventionally, they have been disposed of by incineration.
本発明者等は、廃インキから有価物として顔料
を回収すべく研究中に次のような知見を得た。 The present inventors obtained the following findings during research to recover pigments as valuable materials from waste ink.
廃インキ中の顔料粒子は第１図に示すように微
粒子状の顔料Ｐが溶媒Ｓ中に均一分散しており、
この状態の廃インキにトルエン、メタノール、そ
の他の溶剤を添加し、その量を増して行くと、溶
媒Ｓ中に均一に分散している顔料粒子Ｐがコロイ
ダルシヨツクを受けて凝集し、粒子径が増大して
沈降し易くなり、顔料の分離回収を行うことがで
きる。また、この回収の際、廃インキ中の顔料濃
度が低いと、廃インキからの分離回収が難しいば
かりでなく、回収のためのコストが嵩むため、顔
料回収に先立ち、廃インキを濃縮することが必要
である。 As shown in Figure 1, the pigment particles in the waste ink consist of fine particulate pigment P uniformly dispersed in solvent S.
When toluene, methanol, or other solvent is added to the waste ink in this state and the amount thereof is increased, the pigment particles P uniformly dispersed in the solvent S are subjected to colloidal shock and aggregate, and the particle size decreases. The pigment increases and becomes easy to settle, and the pigment can be separated and recovered. In addition, during this recovery, if the pigment concentration in the waste ink is low, it is not only difficult to separate and recover it from the waste ink, but also increases the cost of recovery, so it is necessary to concentrate the waste ink before recovering the pigment. is necessary.
本発明は、上記の知見に基いてなされたもの
で、廃インキから顔料を分離回収する方法におい
て、該廃インキを顔料濃度が１〜30重量％になる
まで濃縮し、次いで希釈溶剤を加えて顔料を液相
から分離回収することを特徴とする廃インキ中の
顔料回収方法に関するものである。 The present invention has been made based on the above findings, and includes a method for separating and recovering pigments from waste ink, in which the waste ink is concentrated to a pigment concentration of 1 to 30% by weight, and then a diluting solvent is added. The present invention relates to a method for recovering pigments from waste ink, which is characterized by separating and recovering pigments from a liquid phase.
第２図は本発明方法の一実施態様例を示すフロ
ーシートである。 FIG. 2 is a flow sheet showing an embodiment of the method of the present invention.
第２図において廃インキ１を蒸留またはガス放
散などによつて濃縮２し、濃縮インキ３（顔料濃
度：１〜30重量％）とインキ溶剤４を得る。 In FIG. 2, waste ink 1 is concentrated 2 by distillation or gas diffusion to obtain concentrated ink 3 (pigment concentration: 1 to 30% by weight) and ink solvent 4.
濃縮インキ２に希釈溶剤５を加え、混合６した
のち激しく撹拌７する。つぎにこの液を過また
は遠心分離によつて固液分離８し、固相側に顔料
９を得、液相側に溶剤１０を得る。 Diluent solvent 5 is added to concentrated ink 2, mixed 6 and vigorously stirred 7. Next, this liquid is subjected to solid-liquid separation 8 by filtration or centrifugation to obtain pigment 9 on the solid phase side and solvent 10 on the liquid phase side.
ここで希釈溶剤５としては、トルエン、キシレ
ン等の芳香族炭化水素、メタノール、エタノー
ル、イソプロピルアルコール等のアルコール類、
酢酸メチル、酢酸エチル、酢酸ブチル等のエステ
ル類、シクロヘキサノン等のケトン類、メチルセ
ロソルブ等のエーテル類のように、インキの溶媒
として使用されているものを選ぶことが好まし
い。 Here, as the diluent solvent 5, aromatic hydrocarbons such as toluene and xylene, alcohols such as methanol, ethanol, and isopropyl alcohol,
It is preferable to select solvents that are used as ink solvents, such as esters such as methyl acetate, ethyl acetate, and butyl acetate, ketones such as cyclohexanone, and ethers such as methyl cellosolve.
本発明方法において、上記の濃縮工程２におけ
る濃縮度を顔料濃度が１〜30重量％になるまでと
するのは次の理由によるものである。 In the method of the present invention, the concentration level in the concentration step 2 is set to a pigment concentration of 1 to 30% by weight for the following reasons.
廃インキ中の顔料濃度は、通常、0.5〜10重量
％程度の範囲にある。これを処理量の低減や、希
釈溶剤添加効果の促進を目的として濃縮するので
あるが、廃インキの濃縮度（すなわち廃インキ中
の顔料濃度）と粘度との間には第３図に示すよう
な関係がある。廃インキの粘度は輸送、取扱い時
に重要な因子で、150〜200（センチポイズ）が操
作可能な粘度の上限であるため、第３図から廃イ
ンキの濃縮度も顔料濃度30重量％が上限となる。 The pigment concentration in waste ink is usually in the range of about 0.5 to 10% by weight. This is concentrated for the purpose of reducing the amount of waste ink to be processed and promoting the effect of adding a diluting solvent, but there is a difference between the concentration level of waste ink (i.e. pigment concentration in waste ink) and viscosity, as shown in Figure 3. There is a relationship. The viscosity of waste ink is an important factor during transportation and handling, and the upper limit of viscosity that can be manipulated is 150 to 200 (centipoise), so from Figure 3, the upper limit for the concentration of waste ink is 30% by weight of the pigment concentration. .
一方、濃縮廃インキから顔料を回収する場合、
前記の工程６において希釈溶剤を添加するが、第
４図に示すように顔料回収に要する希釈溶剤の添
加量は廃インキ中の顔料濃度に応じて変化し、該
顔料濃度が低下すると所要希釈溶剤量が著しく増
大する。例えば、廃インキ中の顔料濃度５重量％
で所要希釈溶剤量120／Kg−顔料、顔料濃度１
重量％で所要希釈溶剤量300／Kg−顔料となる。
よつて、処理量の低減を計るために廃インキの濃
縮度の下限を顔料濃度１重量％とする。 On the other hand, when recovering pigments from concentrated waste ink,
A diluting solvent is added in the above step 6. As shown in Fig. 4, the amount of diluting solvent added required for pigment recovery changes depending on the pigment concentration in the waste ink, and as the pigment concentration decreases, the required diluting solvent increases. The amount increases significantly. For example, pigment concentration in waste ink is 5% by weight.
Required dilution solvent amount 120/Kg - pigment, pigment concentration 1
The required amount of diluting solvent in weight % is 300/Kg-pigment.
Therefore, in order to reduce the throughput, the lower limit of the concentration of waste ink is set at 1% by weight of the pigment concentration.
また、本発明方法において、上記の工程６で添
加する希釈溶剤の量は、上記の説明から明らかな
ように、工程２での廃インキの濃縮度（廃インキ
中の顔料濃度）に応じて第４図より決定されるも
のである。 Furthermore, in the method of the present invention, the amount of diluent added in step 6 above varies depending on the concentration of waste ink in step 2 (pigment concentration in waste ink), as is clear from the above explanation. This is determined from Figure 4.
なお、以上説明した本発明方法は、顔料のみな
らず、顔料に類似した性状をもつ染料の分離回収
にも適用することができる。 The method of the present invention described above can be applied not only to pigments but also to the separation and recovery of dyes having properties similar to pigments.
実施例 １
顔料濃度が0.5重量％で、溶媒（印刷インキ溶
剤）としてトルエン、酢酸エチル、イソプロピル
アルコール、メチルセロソルブ、メチルエチルケ
トン等を含む印刷廃インキ１Kgを蒸留し、顔料濃
度10重量％の濃縮廃インキと回収溶剤（印刷イン
キ溶剤）約950ｇを得た。Example 1 1 kg of printing waste ink with a pigment concentration of 0.5% by weight and containing toluene, ethyl acetate, isopropyl alcohol, methyl cellosolve, methyl ethyl ketone, etc. as a solvent (printing ink solvent) was distilled to obtain a concentrated waste ink with a pigment concentration of 10% by weight. About 950 g of recovered solvent (printing ink solvent) was obtained.
つぎに、この濃縮廃インキ50ｇに希釈溶剤とし
てトルエン250ｇを混合し、撹拌したのち過し、
約８ｇの固形分（顔料分）を回収した。 Next, 50 g of this concentrated waste ink was mixed with 250 g of toluene as a diluent, stirred and filtered.
Approximately 8 g of solid content (pigment content) was recovered.
実施例 ２
顔料濃度が１重量％で、溶媒（印刷インキ溶
剤）としてトルエン、酢酸エチル、イソプロピル
アルコール、メチルセロソルブ、メチルエチルケ
トン等を含む印刷廃インキ１Kgに、空気60／
minを送つてインキ中の溶剤分を放散し、顔料濃
度が５重量％になるまで濃縮した。Example 2 1 kg of printing waste ink with a pigment concentration of 1% by weight and containing toluene, ethyl acetate, isopropyl alcohol, methyl cellosolve, methyl ethyl ketone, etc. as a solvent (printing ink solvent) was mixed with 60% of air.
The solvent content in the ink was dispersed by sending the ink at a concentration of 5% by weight, and the pigment concentration was concentrated to 5% by weight.
つぎに、上記濃縮廃インキ200ｇに対し、希釈
溶剤として酢酸エチル200ｇを加えて撹拌し、
3500rpmの遠心分離機に10分間かけたのち沈降し
た固形分（顔料分）８ｇを回収した。また回収し
た顔料分の純度は90％以上であることを確認し
た。 Next, 200 g of ethyl acetate was added as a diluting solvent to 200 g of the concentrated waste ink, and the mixture was stirred.
After centrifuging at 3500 rpm for 10 minutes, 8 g of settled solid matter (pigment content) was recovered. It was also confirmed that the purity of the recovered pigment was over 90%.
第１図は廃インキ中の顔料粒子の状態を示す模
式図、第２図は本発明方法の一実施態様例を示す
図、第３図は廃インキの顔料濃度と粘度との関係
を示す図、第４図は廃インキの顔料濃度と顔料回
収に要する希釈溶剤量の関係を示す図である。
Fig. 1 is a schematic diagram showing the state of pigment particles in waste ink, Fig. 2 is a diagram showing an embodiment of the method of the present invention, and Fig. 3 is a diagram showing the relationship between pigment concentration and viscosity of waste ink. , FIG. 4 is a diagram showing the relationship between the pigment concentration of waste ink and the amount of diluting solvent required for pigment recovery.
Claims (1)
て、該廃インキを顔料濃度が１〜30重量％になる
まで濃縮し、次いで希釈溶剤を加えて顔料を液相
から分離回収することを特徴とする廃インキ中の
顔料回収方法。1. A method for separating and recovering pigments from waste ink, which is characterized by concentrating the waste ink until the pigment concentration is 1 to 30% by weight, and then adding a diluting solvent to separate and recover the pigments from the liquid phase. Method for recovering pigments in ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17638881A JPS5879508A (en) | 1981-11-05 | 1981-11-05 | Recovering method for pigment in waste ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17638881A JPS5879508A (en) | 1981-11-05 | 1981-11-05 | Recovering method for pigment in waste ink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5879508A JPS5879508A (en) | 1983-05-13 |
| JPS631882B2 true JPS631882B2 (en) | 1988-01-14 |
Family
ID=16012771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17638881A Granted JPS5879508A (en) | 1981-11-05 | 1981-11-05 | Recovering method for pigment in waste ink |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5879508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0463381U (en) * | 1990-10-11 | 1992-05-29 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5199981A (en) * | 1991-01-18 | 1993-04-06 | Sicpa Holding Sa | Pigment compositions including intaglio printing ink waste |
| CN106883479B (en) * | 2017-04-11 | 2018-11-20 | 南昌印钞有限公司 | A kind of rubber and preparation method thereof |
-
1981
- 1981-11-05 JP JP17638881A patent/JPS5879508A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0463381U (en) * | 1990-10-11 | 1992-05-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5879508A (en) | 1983-05-13 |
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