CN102888766A - Processing method for removing hydrolyzed reactive dyes on cotton knitted fabric by using solvent water system - Google Patents
Processing method for removing hydrolyzed reactive dyes on cotton knitted fabric by using solvent water system Download PDFInfo
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- CN102888766A CN102888766A CN2012104247574A CN201210424757A CN102888766A CN 102888766 A CN102888766 A CN 102888766A CN 2012104247574 A CN2012104247574 A CN 2012104247574A CN 201210424757 A CN201210424757 A CN 201210424757A CN 102888766 A CN102888766 A CN 102888766A
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Abstract
The invention relates to a processing method for removing hydrolyzed reactive dyes on a cotton knitted fabric by using a solvent water system. The processing method comprises the steps that: (1) residual dye liquid is removed after the cotton knitted fabric is dyed, then washing and soaping are carried out; (2) a solvent and water are mixed according to the volume ratio of 1:1-1:3 under the condition of room temperature, and the pH value of the mixture is adjusted to form a solvent water system; and (3) the pretreated dyed cotton knitted fabric is processed for two times by using the solvent water system. According to the method, the dyed cotton knitted fabric is processed by the low-temperature solvent water system for two times rather than one-time high-temperature washing and two-time room-temperature washing in the conventional washing process, the after treatment time is shortened, the production efficiency is improved, and the production cost is reduced; the recovery and recycling of sources is achieved through a solvent recovery system, the production cost is saved, and the environment pollution is reduced; and the after treatment water consumption is greatly saved due to the recovery and repeated use of the solvent, the waste water discharge is reduced, the energy consumption is reduced, and remarkable economic benefit and social benefit are achieved.
Description
Technical field
The invention belongs to the removal method field of hydrolised dye on the COTTON FABRIC, particularly a kind of aqueous solvent system is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC.
Background technology
REACTIVE DYES is because first-selected dyestuff bright in colour, that chromatogram is complete, dyeing is ripe, COLOR FASTNESS is higher, the cost performance advantages of higher becomes dyeing and printing of cellulosic class textiles.But REACTIVE DYES is being dyed, is being had the REACTIVE DYES up to 20～40% to be hydrolyzed in the set in the dyeing course, and can not with the cellulose formation covalent bonds that reacts.Hydrolised dye, be in the original REACTIVE DYES unsettled atom or group replaced by hydroxyl, its diffusion and absorption property and original REACTIVE DYES are closely similar, therefore easily diffuse into fibrous inside, and adsorb its surface and form " loose colour "; When dying dark color in addition, the dye molecule that is adsorbed in fabric face easily forms polymolecular laminar associated matter, produces " steric hindrance " phenomenon, causes again producing loose colour.The existence of set dyestuff can not reduce the COLOR FASTNESS of DYED FABRICS, this problem can't effectively solve in dyeing course, therefore textiles generally needs through multiple tracks washing, soap boiling or reduction cleaning after stamp or dyeing, the dirts such as the dyestuff of not set, auxiliary agent are washed from fiber surface, to improve colour brightness, COLOR FASTNESS and the cleanliness factor of printed fabrics.
It is reported, REACTIVE DYES is dyed half that energy consumption in the rear washing process accounts for whole dyeing, water consumption accounts for most of ratio, and the COD that produces of whole dyeing processing has 1/3 with to dye rear washing relevant, and washing processing cost and cost of sewage disposal summation account on half of whole dyeing cost.Pressure for production cost and environmental pollution, dye manufacturers and auxiliary agent supply factory constantly unite release new dye and ecological, environmental protective soaping agent, the REACTIVE DYES of the Remazol Ultra RGB high colour-fast rate of releasing such as Dystar, when dying dark brown, dyestuff similar with other compared, consumption can reduce, and the washing post processing after the dyeing also can reduce; The XC-W of BASF exploitation can use in high salt situation, reduces by one washing, but the new product of releasing is that dyestuff or auxiliary agent all have identical characteristic, and their prices own can be than common exceed several times, and integrated cost does not have minimizing yet.
Since REACTIVE DYES is applied, countless patent, business report, research paper about REACTIVE DYES and supporting soaping agent aspect have been produced.Yet what form with it sharp contrast is that the publication that relates to the REACTIVE DYES washing is few.Although replace five road standard wash with three road high temperature washings after research dyeing is arranged, to COD and BOD
5Reducing has certain help, but increases the use of the energy when water consumption reduces, and overall cost does not obviously descend.Therefore, in order to save water, auxiliary agent, wash time and the thermal energy consumption in the washing process, reducing discharge of wastewater and pollution, improve economic benefit and the ecological benefits of printing and dyeing enterprise, is the key technology of being badly in need of solution in the textile printing and dyeing processing technology.
Summary of the invention
Technical problem to be solved by this invention provides the processing method that a kind of aqueous solvent system is removed hydrolysed reactive dye on the COTTON FABRIC, can reach the requirement of conventional high temperature multiple tracks washing by the fabric color fastness after the method processing, not only a large amount of using water wisely, energy consumption and wash time, and reduce sewage discharge and to the pollution of environment, integrated cost is significantly descended.
A kind of aqueous solvent system of the present invention is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, comprising:
(1) after cotton fabric dyeing process finished, then the dyeing residual liquid of draining was washed, is soaped;
(2) under normal temperature condition, be after 1:1 ~ 1:3 mixes, to regulate the pH value with solvent by volume in water, form the aqueous solvent system;
(3) with above-mentioned aqueous solvent system COTTON FABRIC after pretreated dyeing is carried out twice and processes, after wherein first is disposed with residual liquid discharge to solvent recovery unit, then add the aqueous solvent system and carry out again second and process solvent recovery.
Be the twice washing in the described step (1), technological parameter is: bath raio is 1:5 ~ 1:20, and the time is 5 ~ 10min.
The technological parameter of soaping in the described step (1) is: bath raio is 1:5 ~ 1:20,95 ~ 100 ℃ of temperature, time 20 ~ 30min.
Solvent is acetone or absolute ethyl alcohol in the described step (2).
The pH value is 6 ~ 8 in the described step (2).
Aqueous solvent system treatment process parameter is in the described step (3): bath raio is 1:5 ~ 1:20, time 20 ~ 40min, 40 ~ 50 ℃ of temperature.
Solvent recovery: adopt solvent recovery unit, different according to solvent boiling point, heat, distillation, cooling is processed into clean as new solvent with the organic solvent in the raffinate after the washing, can repeatedly recycle.Can save like this cost of buying novel solvent, also alleviate the pollution to environment simultaneously.
Removal process: (1) adds needs the solution raffinate that contains of recycling to arrive a bucket groove; (2) oil of the hot coal in the heating rod heating recovery bucket interlayer; Hot coal oil transfers heat to the raffinate in the recycling bin, and solution is heated up, and is converted into steam state by liquid state after organic solvent is heated; (3) the steam state solvent is through cooling system liquefaction outflow; The cleaning solvent of separating flows into and reclaims vessel; Temperature and room temperature when solvent is cooled to liquid the outflow are suitable; (4) cleaning residue.
Beneficial effect
(1) COTTON FABRIC replaced one high temperature washing twice normal temperature in the conventional washing process to wash after the present invention contained aqueous solvent system processing dyeing with twice low temperature, shortened finishing time, improved production efficiency, reduced production cost, need to soap through twice for dark heavy colour, technique of the present invention has more advantage;
(2) the present invention is by solvent recovering system, and the solvent that the aqueous solvent system is processed in the rear raffinate carries out recycling use, has realized the resource recycling, has not only saved production cost, and has alleviated environmental pollution;
(3) the present invention is because twice aqueous solvent system replaces one high temperature twice normal temperature to process, and by to solvent recovery Reusability repeatedly, greatly saved the post processing water, reduced sewage discharge, and saved energy consumption, had significant economic benefit and social benefit.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
1, DYED FABRICS preliminary treatment: behind cotton fabric dyeing process, the dyeing residual liquid of draining, under the normal temperature after the twice washings (water washing bath is than 1:10, time 10min), soap together in (Shanghai good and soaping agent AST consumption be that 1g/l, temperature are 95 ℃, time 20min, bath raio 1:10); 2, preparation acetone aqueous systems: under normal temperature condition, acetone and by volume 1:1 adding of water are equipped with in the encapsulation process equipment of fabric, bath raio is controlled to be 1:10, regulates pH 8 ± 0.1 with soda ash; 3, the acetone aqueous systems is processed COTTON FABRIC: the acetone aqueous systems is warmed up to 40 ℃, behind COTTON FABRIC processing 20min, residual liquid discharge to solvent reclaimer, is then added the acetone aqueous systems by same procedure, process 20min for 40 ℃, residual liquid discharge is in reclaimer; 4, recover acetone.
Steam consumption and sewage discharge contrast following (take one ton of COTTON FABRIC as example) in technique of the present invention and the common process processing procedure behind the grey cotton fabric dyeing process:
Embodiment 2
1, DYED FABRICS is soaped: the fabric after will dyeing, the dyeing residual liquid of draining, under the normal temperature after the twice washings (water washing bath is than 1:15, time 10min), soap (the good and AST soaping agent consumption in Shanghai is that 2g/l, temperature are 95 ℃, 20 minutes time, bath raio 1:15); 2, preparation aqueous solvent system: under normal temperature condition, be equipped with in the encapsulation process equipment of fabric in the ratio 1:1.5 adding of absolute ethyl alcohol and water, bath raio is controlled to be 1:15, regulates pH 6 ± 0.1 with glacial acetic acid; 3, absolute ethyl alcohol aqueous systems processing COTTON FABRIC: the absolute ethyl alcohol aqueous systems is warmed up to 50 ℃, COTTON FABRIC was processed 30 minutes, residual liquid discharge is to solvent reclaimer, then add again the absolute ethyl alcohol aqueous systems by identical method, processed 30 minutes for 50 ℃, residual liquid discharge is in reclaimer; 4, absolute ethyl alcohol reclaims.
Steam consumption and sewage discharge contrast following (take one ton of COTTON FABRIC as example) in technique of the present invention and the common process processing procedure behind the black cotton fabric dyeing process:
Claims (6)
1. an aqueous solvent system is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, comprising:
(1) after cotton fabric dyeing process finished, then the dyeing residual liquid of draining was washed, is soaped;
(2) under normal temperature condition, be after 1:1 ~ 1:3 mixes, to regulate the pH value with solvent by volume in water, form the aqueous solvent system;
(3) with above-mentioned aqueous solvent system COTTON FABRIC after pretreated dyeing is carried out twice and processes, after wherein first is disposed with residual liquid discharge to solvent recovery unit, then add the aqueous solvent system and carry out again second and process solvent recovery.
2. a kind of aqueous solvent system according to claim 1 is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, it is characterized in that: be the twice washing in the described step (1), technological parameter is: bath raio is 1:5 ~ 1:20, and the time is 5 ~ 10min.
3. a kind of aqueous solvent system according to claim 1 is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, and it is characterized in that: the technological parameter of soaping in the described step (1) is: bath raio is 1:5 ~ 1:20,95 ~ 100 ℃ of temperature, time 20 ~ 30min.
4. a kind of aqueous solvent system according to claim 1 is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, it is characterized in that: solvent is acetone or absolute ethyl alcohol in the described step (2).
5. a kind of aqueous solvent system according to claim 1 is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, it is characterized in that: the pH value is 6 ~ 8 in the described step (2).
6. a kind of aqueous solvent system according to claim 1 is removed the processing method of hydrolysed reactive dye on the COTTON FABRIC, it is characterized in that: aqueous solvent system treatment process parameter is in the described step (3): bath raio is 1:5 ~ 1:20, time 20 ~ 40min, 40 ~ 50 ℃ of temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210424757.4A CN102888766B (en) | 2012-10-30 | 2012-10-30 | Processing method for removing hydrolyzed reactive dyes on cotton knitted fabric by using solvent water system |
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| CN201210424757.4A CN102888766B (en) | 2012-10-30 | 2012-10-30 | Processing method for removing hydrolyzed reactive dyes on cotton knitted fabric by using solvent water system |
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| CN102888766A true CN102888766A (en) | 2013-01-23 |
| CN102888766B CN102888766B (en) | 2014-02-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469638A (en) * | 2013-09-25 | 2013-12-25 | 武汉纺织大学 | Washing method capable of improving textile color fastness |
| CN109881503A (en) * | 2019-03-06 | 2019-06-14 | 江阴职业技术学院 | A kind of nylon fabric reactive dyeing processing method |
| CN115369643A (en) * | 2022-10-21 | 2022-11-22 | 绍兴市上虞丰达染整有限公司 | Low-temperature washing method for preventing staining of reactive dye |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4841082A (en) * | 1971-09-27 | 1973-06-16 | ||
| US3951588A (en) * | 1973-09-20 | 1976-04-20 | Ciba-Geigy Corporation | Process for dyeing and printing or optical brightening of cellulose materials |
| JPH0841082A (en) * | 1994-03-30 | 1996-02-13 | Rhone Poulenc Inc | Phosphorylating agent composition,production of monoalkyl phosphate,and composition produced thereby |
| CN102351268A (en) * | 2011-06-28 | 2012-02-15 | 东华大学 | Method of recycling inorganic salt in dyeing wastewater |
| CN102677491A (en) * | 2012-05-03 | 2012-09-19 | 西安工程大学 | Method for preparing clean type post-processing additive for reactive dyeing cotton fabric |
-
2012
- 2012-10-30 CN CN201210424757.4A patent/CN102888766B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4841082A (en) * | 1971-09-27 | 1973-06-16 | ||
| US3951588A (en) * | 1973-09-20 | 1976-04-20 | Ciba-Geigy Corporation | Process for dyeing and printing or optical brightening of cellulose materials |
| JPH0841082A (en) * | 1994-03-30 | 1996-02-13 | Rhone Poulenc Inc | Phosphorylating agent composition,production of monoalkyl phosphate,and composition produced thereby |
| CN102351268A (en) * | 2011-06-28 | 2012-02-15 | 东华大学 | Method of recycling inorganic salt in dyeing wastewater |
| CN102677491A (en) * | 2012-05-03 | 2012-09-19 | 西安工程大学 | Method for preparing clean type post-processing additive for reactive dyeing cotton fabric |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469638A (en) * | 2013-09-25 | 2013-12-25 | 武汉纺织大学 | Washing method capable of improving textile color fastness |
| CN109881503A (en) * | 2019-03-06 | 2019-06-14 | 江阴职业技术学院 | A kind of nylon fabric reactive dyeing processing method |
| CN115369643A (en) * | 2022-10-21 | 2022-11-22 | 绍兴市上虞丰达染整有限公司 | Low-temperature washing method for preventing staining of reactive dye |
| CN115369643B (en) * | 2022-10-21 | 2024-03-12 | 绍兴市上虞丰达染整有限公司 | Reactive dye staining-prevention low-temperature washing method |
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| CN102888766B (en) | 2014-02-26 |
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