CN102733208B - Device for indirect electrochemical reduction dyeing - Google Patents
Device for indirect electrochemical reduction dyeing Download PDFInfo
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- CN102733208B CN102733208B CN201210156525.5A CN201210156525A CN102733208B CN 102733208 B CN102733208 B CN 102733208B CN 201210156525 A CN201210156525 A CN 201210156525A CN 102733208 B CN102733208 B CN 102733208B
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Abstract
The present invention relates to an environment protection type dyeing device, and especially to a device for indirect electrochemical reduction dyeing. The purpose of the present invention is mainly to solve the following technical problems in the prior art: during dyeing, the electron transfer efficiency is not high, the electrolytic reduction time is long, and the current efficiency is low, such that practical applications of the device in factories are hampered, and the like. The device comprises an electrolytic tank (1), wherein the electrolytic tank (1) comprises a cathode tank (2) with a regular hexagon cross section, both opposite sides of the cathode tank are provided with an anode tank (3), through holes (4) are arranged between the cathode tank and the anode tank, a plurality of cathode plates (5) are inserted and connected in the cathode tank (2), the cathode plates are spirally arranged, upper ends of the cathode plates are fixed on an annular body (6), anode plates are inserted and connected in the anode plates (7), separation films are arranged between the cathode plates and the anode plates, and the cathode plates and the anode plates are respectively connected with an external power supply by conductors.
Description
Technical field
The present invention relates to a kind of environment protection type dye equipment, especially relate to a kind of equipment for indirect electrochemical reduction stain.
Background technology
Reducing dye is the dyestuff of a class function admirable, there is coloured light bright-coloured, chromatogram is complete, Color fastness is good, especially light fastness is high, but in its traditional colouring method, adopt sodium hydrosulfite as reductant, make to have produced in its dyeing course the accessory substance extremely harmful to environment such as hydrogen sulfide, sodium sulfite.Along with the fast development of national economy and the raising of people's living standard, be badly in need of a kind of research of carrying out eco-friendly new dyeing method and technique.
For fear of the use of chemical reducing agent and the formation of accessory substance, thereby eliminate reducing dye waste water, both at home and abroad just in the research of the eco-friendly new dyeing method of Efforts To Develop and technique.Comprise and select the reductant of environment-friendly type to replace sodium hydrosulfite use, such as hydroxypropanone-, iron (II) complex compound etc.
Electrochemical Dyeing technology reaction condition gentleness, oxidation-reduction potential is controlled, reductant is renewable, consume chemicals and water is few, discharge of wastewater is few, is just becoming the most attractive new method in reducing dye colouring method.1807, Grotthus found that electric current can indigotin first, has started the beginning of Electrochemical Dyeing technology.But, up to date 20 years, BechtoldThomas seminar and the Switzerland AlbertRoessler of Australia just start this gate technique to carry out deep research.Electrochemical reduction dyeing method has three kinds: Direct electrochemical reduction, indirect electrochemical reduction and electric catalyticing hydro.
Direct electrochemical reduction due to electronics be between two kinds of solids directly shift, therefore, the efficiency of electric current very low (lower than 20%) in experiment, rate of reduction is very slow.And the leuco dye forming in system is unstable, affect the color and luster of DYED FABRICS.
Electric catalyticing hydro method reducing dye, maximum advantage is not need chemical reducing agent, there is no discharge of wastewater.But reducing dye is water-fast solid particle mostly, therefore, the weak effect that contacts of dyestuff and electrode, catalyst.Another one problem is life-span of catalyst and selective, at present the noble metal catalyst Pt of research, Pd price is high, the life-span is short, RaneyNi catalyst activity is lower, makes the conversion ratio of dyestuff not high.Owing to there being liberation of hydrogen side reaction, the requirement very high to the selective proposition of catalyst, estimated current efficiency is too low, can't meet actual requirement.
The environment protection type dye method of the most potential replacement sodium hydrosulfite is indirect electrochemical reduction stain method at present.But at present domesticly its research is mainly concentrated on to mediator fasten, comprise that triethanolamine, glucose and tartaric acid are the medium system of part, although these systems had a good Color, but electron transfer efficiency is not high, electroreduction overlong time, current efficiency is low, has hindered the practical application in the middle of factory.Urgently develop a kind of novel dyeing installation and improve electrochemical reduction dyeing efficiency.
Summary of the invention
The present invention is to provide a kind of equipment for indirect electrochemical reduction stain, it is mainly that while solving the existing dyeing of prior art, electron transfer efficiency is not high, electroreduction overlong time, current efficiency is low, has hindered the technical problem of practical application in the middle of factory etc.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of equipment for indirect electrochemical reduction stain of the present invention, comprise electrolytic cell, it is orthohexagonal cathode can that described electrolytic cell includes cross section, the relative both sides of cathode can are respectively provided with an anode slot, between cathode can and anode slot, be provided with through hole, in cathode can, be plugged with many minus plates, minus plate is arranged twist, minus plate upper end is fixed on an annular solid, in anode slot, be plugged with positive plate, between minus plate and positive plate, be provided with barrier film, minus plate is connected with external power supply by wire respectively with positive plate.Minus plate is arranged twist, and minus plate and annular solid exist certain angle.Minus plate become screw type and electrolytic cell to become hexagon this contributes to electrolyte under strong stirring, in electrolytic cell, to form turbulent flow, when strong stirring rotating speed is larger, electrolyte can not overflow electrolytic cell.Improve stir speed (S.S.) and can improve electron transfer efficiency.Anode slot is positioned at the symmetrical two ends of cathode can and contributes to be evenly distributed electric current, makes electrolyte electrolysis even.Many negative electrodes double anode electrolytic cell of made of the present invention effectively improves electron transfer efficiency 50%, calculates the short electroreduction time 45% compared with plain electrolysers.
As preferably, the centre of the circle of described minus plate composition is provided with strong mixer or magnetic stirrer.Strong stirring and magnetic agitation can improve dissolves contact electronic efficiency, improves medium system reducing power.Strong mixer rotating speed is at 300-2000r/min.
As preferably, described cathode can bottom is provided with heating collar, can accelerate dyeing.
As preferably, described electrolytic cell material is polymethacrylates, polyfluortetraethylene plate or quartz glass.These materials have good corrosion resistance, DIMENSIONAL STABILITY, avoid strong basicity electrolyte electrolytic cell to be caused to the generation of damage and minimizing side reaction.
As preferably, described electrolytic cell material is quartz glass.Quartz glass has good DIMENSIONAL STABILITY.
As preferably, described positive plate is metallic plate or nonmetal conductive material panel.
As preferably, described minus plate is copper coin, corrosion resistant plate or graphite cake.Graphite, copper coin as electrodes conduct and good heat conductivity, have good corrosion resistance, inexpensive, be easy to get, and its chemical property is more stable, there is not chemical reaction with various gas at normal temperatures, be applied in the Electrochemical Dyeing technique of oxalic acid and glucose complex system effect remarkable.
As preferably, described barrier film is perfluoro sulfonic acid membrane.Perfluoro sulfonic acid membrane only allows proton to pass through, and has not only met the transfer of anode and cathode electronics but also has avoided ferrous ion to enter anode and again oxidized.As preferably, described external power supply output voltage is direct current 1-10V.
As preferably, described electrolytic cell is by the high medium-sized silica gel sheet material bonding of corrosion-resistant heat resistance or adopt one-shot forming mode to be made.
Therefore, the present invention can effectively improve electron transfer efficiency, shortens the electroreduction time, improves current efficiency, effectively reduces electric quantity consumption, reduces the application cost of enterprise.The present invention makes indirect electrochemical reduction stain process homogeneous heating and temperature automatically controlled, safety non-pollution, crudy is high, efficiency is high, has good prospects for commercial application.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of electrolytic cell of the present invention;
Accompanying drawing 4 is perspective view of electrolytic cell of the present invention;
Accompanying drawing 5 is a kind of structural representations of minus plate of the present invention;
Accompanying drawing 7 is plan structure schematic diagrames of Fig. 5;
Accompanying drawing 8 is perspective view of minus plate of the present invention.
Parts, position and numbering in figure: electrolytic cell 1, cathode can 2, anode slot 3, through hole 4, minus plate 5, annular solid 6, positive plate 7, handle 8.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of equipment for indirect electrochemical reduction stain of this example, as figure, Fig. 2, Fig. 3, Fig. 4, the electrolytic cell 1 that has a quartz glass to make, it is orthohexagonal cathode can 2 that electrolytic cell includes cross section, cathode can bottom is provided with heating collar.The relative both sides of cathode can are respectively provided with an anode slot 3, between cathode can and anode slot, be provided with through hole 4, in cathode can, be plugged with many minus plates 5, as Fig. 5, Fig. 6, Fig. 7, Fig. 8, minus plate is arranged twist, minus plate upper end is fixed on an annular solid 6, is fixed with handle 7 on annular solid, and the centre of the circle of minus plate composition is provided with strong mixer.In anode slot, be plugged with positive plate 7, between minus plate and positive plate, be provided with barrier film, barrier film is perfluoro sulfonic acid membrane, and minus plate is connected with external power supply by wire respectively with positive plate.Positive plate, minus plate are copper coin.
When use, respectively the catholyte preparing and anolyte are poured in cathode can and anode slot, switched on power, voltage is 4.5V, and energising 15min, joins needed dyestuff in cathode can, and strong stirring fully disperses dyestuff.Continue energising 10min-30min, after reducing dyes is complete, power-off.Catholyte suction is dyed in cup, the textile plain weave bleached cotton fabric having soaked is immersed in dye liquor and dyeed, dyeing 10min, takes out oxidation 30s, repeats 5 times.Washing, soap boiling, washing.
The foregoing is only specific embodiments of the invention, but architectural feature of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the variation of doing or modification are all encompassed among the scope of the claims of the present invention.
Claims (9)
1. the equipment for indirect electrochemical reduction stain, comprise electrolytic cell (1), it is characterized in that it is orthohexagonal cathode can (2) that described electrolytic cell (1) includes cross section, the relative both sides of cathode can are respectively provided with an anode slot (3), between cathode can and anode slot, be provided with through hole (4), in cathode can (2), be plugged with many minus plates (5), minus plate is arranged twist, the centre of the circle of minus plate (5) composition is provided with strong mixer or magnetic stirrer, minus plate upper end is fixed on an annular solid (6), in anode slot, be plugged with positive plate (7), between minus plate and positive plate, be provided with barrier film, minus plate is connected with external power supply by wire respectively with positive plate.
2. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described cathode can (2) bottom is provided with heating collar.
3. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described electrolytic cell (1) material is polymethacrylates, polyfluortetraethylene plate or quartz glass.
4. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described electrolytic cell (1) material is quartz glass.
5. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described positive plate (7) is metallic plate or nonmetal conductive material panel.
6. a kind of equipment for indirect electrochemical reduction stain according to claim 6, is characterized in that described minus plate (5) is copper coin, corrosion resistant plate or graphite cake.
7. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described barrier film is perfluoro sulfonic acid membrane.
8. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that described external power supply output voltage is direct current 1-10V.
9. a kind of equipment for indirect electrochemical reduction stain according to claim 1, is characterized in that the medium-sized silica gel sheet material bonding that the described corrosion-resistant heat resistance of electrolytic cell (1) is high or adopts one-shot forming mode to be made.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156525.5A CN102733208B (en) | 2012-05-21 | 2012-05-21 | Device for indirect electrochemical reduction dyeing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210156525.5A CN102733208B (en) | 2012-05-21 | 2012-05-21 | Device for indirect electrochemical reduction dyeing |
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| CN102733208A CN102733208A (en) | 2012-10-17 |
| CN102733208B true CN102733208B (en) | 2014-05-14 |
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| CN201210156525.5A Active CN102733208B (en) | 2012-05-21 | 2012-05-21 | Device for indirect electrochemical reduction dyeing |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI564448B (en) | 2015-02-25 | 2017-01-01 | 財團法人紡織產業綜合研究所 | Dyeing device and dyeing apparatus |
| CN108754915A (en) * | 2018-05-24 | 2018-11-06 | 武汉纺织大学 | Electrochemistry dyeing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919070A (en) * | 1972-09-13 | 1975-11-11 | Herrett Wilfred H | Electrolytic cell |
| CN102154793A (en) * | 2011-03-23 | 2011-08-17 | 东华大学 | Dyeing apparatus for electrochemical reduction of cotton yarns |
| CN102174731A (en) * | 2011-03-04 | 2011-09-07 | 东华大学 | Dyeing device for electrochemical reduction |
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2012
- 2012-05-21 CN CN201210156525.5A patent/CN102733208B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919070A (en) * | 1972-09-13 | 1975-11-11 | Herrett Wilfred H | Electrolytic cell |
| CN102174731A (en) * | 2011-03-04 | 2011-09-07 | 东华大学 | Dyeing device for electrochemical reduction |
| CN102154793A (en) * | 2011-03-23 | 2011-08-17 | 东华大学 | Dyeing apparatus for electrochemical reduction of cotton yarns |
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| CN102733208A (en) | 2012-10-17 |
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Effective date of registration: 20180426 Address after: 311221 Mei Dong village, Dang Wan Town, Xiaoshan District, Hangzhou, Zhejiang Patentee after: Hangzhou Jimei Printing and Dyeing Co., Ltd. Address before: 311221 88 Xingle Road, Dang Wan Town, Xiaoshan District, Hangzhou, Zhejiang Patentee before: Saintyear Holding Group Co., Ltd. |