CN106835296A - A kind of string anaerobic decolouring wash mill and technique - Google Patents
A kind of string anaerobic decolouring wash mill and technique Download PDFInfo
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- CN106835296A CN106835296A CN201710021437.7A CN201710021437A CN106835296A CN 106835296 A CN106835296 A CN 106835296A CN 201710021437 A CN201710021437 A CN 201710021437A CN 106835296 A CN106835296 A CN 106835296A
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- Prior art keywords
- decolouring
- anaerobic
- water
- string
- water injection
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- 238000000034 method Methods 0.000 title abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000005406 washing Methods 0.000 claims abstract description 48
- 238000011010 flushing procedure Methods 0.000 claims abstract description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 238000004040 coloring Methods 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 66
- 239000007924 injection Substances 0.000 claims description 66
- 239000000243 solution Substances 0.000 claims description 52
- 238000002360 preparation method Methods 0.000 claims description 26
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- 229910001948 sodium oxide Inorganic materials 0.000 claims 1
- 239000000975 dye Substances 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Textile Engineering (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of string anaerobic decolouring wash mill and technique, NaOH, sodium dithionite are first dissolved in water solution of stripping is obtained, then string is stripped using solution of stripping in high temperature cylinder, under isolation air conditionses；Reducing agent is dissolved in water anaerobic decolouring wash solution is obtained, in the case where air conditionses are completely cut off, one-way flushing decolouring is carried out to string using above-mentioned anaerobic decolouring wash solution, until can't detect coloring material in the flushing liquor of discharge, that is, anaerobic decolouring washing process is completed；Present invention process thoroughly completely cuts off the oxygen in air and in water such that it is able to realizes to be aoxidized during color liquid is washed after plant fiber decoloration and restains, fully decolourizes；By the way that anaerobic decolouring wash solution is not circulated, by way of one-way flushing, it is more beneficial for completely rinsing the dyestuff residual in solution after washing of decolourizing well, decolouring rear-bank rotor housing inner dye residual concentration is rinsed close to " 0 ", while substantially reducing the water consumption that washing is decolourized.
Description
Technical field
The invention belongs to washing technology field of decolourizing, and in particular to a kind of string anaerobic decolouring wash mill and work
Skill.
Background technology
Textile industry is the important economic support industry of China, and washing of decolourizing is a step of the most important thing in textile industry, is taken off
The quality of color washing quality directly affects the quality of final products, and traditional decolouring washing process is using water, oxidant or reduction
Coloring compound of the agent treatment absorption on fibre, carries out the decolouring washing of fibre.
A kind of typical industrial decolouring washing methods is：After being stripped with oxidant or reducing agent, then with running water or
The common soft water of person carries out multiple cyclic washing.However, the above method reduces the residual colour saturation in solution by repeatedly washing,
Not only need to expend a large amount of water, and decolouring clean result is poor, oxidation is restained, it is impossible to realize the thorough decolouring of fibre.
The content of the invention
In order to solve the above mentioned problem of prior art presence, can realize thoroughly decolourizing simultaneously the invention provides one kind
Significantly save the string anaerobic decolouring wash mill and technique of washing water consumption.
The technical solution adopted in the present invention is：
A kind of string anaerobic decolouring wash mill, it is characterised in that including high temperature cylinder and preparation bucket；
The high temperature cylinder includes the interior cage and outer barrel that are coaxially disposed, and the inside of the interior cage is provided for placing string
Accommodating chamber and the water injection pipe for the accommodating chamber interplantation fibres to be carried out with one-way flushing, the bottom of the water injection pipe is set to
Water inlet end, the tube wall of the water injection pipe is from top to bottom through some water injection holes of setting；The barrel of the interior cage from top to bottom runs through
Some draining meshes are set；
Be provided between the interior cage and the outer barrel discharge flushing liquor drainage channel, the draining mesh with it is described
Drainage channel connection is set, and the bottom of the drainage channel sets draining valve；
The bottom of the prepared bucket sets delivery port, and the water inlet end of the water injection pipe passes through with the delivery port of the prepared bucket
Connecting tube is connected.
Pump is set in the connecting tube.
The water injection pipe is set along the central axis of the interior cage.
The draining valve is air valve.
The draining mesh is circular port.
The internal diameter of the circular port is 40-80mm.
Temperature measuring equipment is set in the accommodating chamber.
The temperature measuring equipment is thermometer.
A kind of string anaerobic decolouring washing process, comprises the following steps：
A () fully after dissolving, is made into stripping to NaOH, sodium dithionite and water is sequentially added in the prepared bucket
Color solution；
B () extracts and successively through connecting tube, the water inlet end of water injection pipe, water injection pipe the solution of stripping out from preparation bucket
After water injection hole, flow into the accommodating chamber of the high temperature cylinder；The string for needing to be decolourized is placed in the accommodating chamber of the high temperature cylinder,
The solution of stripping is heated to 100-120 DEG C in the high temperature cylinder afterwards, 30-60min is incubated, and in isolation air conditionses
Under, the string is stripped using the solution of stripping after heating, the waste liquid of stripping of formation flow through successively draining mesh,
After drainage channel, from draining valve discharge；
C () fully after dissolving, obtains anaerobic decolouring wash solution to reducing agent and water is added in the prepared bucket；
(d) by the anaerobic decolouring wash solution from preparation bucket in extract out and successively through connecting tube, the water inlet end of water injection pipe,
After the water injection hole of water injection pipe, flow into the accommodating chamber of the high temperature cylinder；
E () is shelled using the anaerobic decolouring wash solution in the high temperature cylinder in the case where air conditionses are completely cut off to step (b)
String after color carries out one-way flushing decolouring；After the flushing liquor of formation flows through draining mesh, drainage channel successively, from draining
Valve is discharged；
F () repeats (c)-(e) steps, until can't detect coloring material in the flushing liquor of discharge, that is, complete described
Anaerobic decolouring washing process.
In step (a), the mass ratio of the NaOH, sodium dithionite and water is 2-3:3:1000.
In step (c), the reducing agent is sodium dithionite.
In step (c), the reducing agent is 0.2 with the mass ratio of the water:1000-4:1000.
In step (d), when carrying out the one-way flushing decolouring, the temperature of the anaerobic decolouring wash solution is 25-90 DEG C.
The anaerobic decolouring wash solution is anaerobic water, and the anaerobic water can also use burning water, iron chip filter, oxygen scavenger method
Or film deoxidizing etc. is obtained.
Beneficial effects of the present invention are：
(1) string anaerobic decolouring washing process of the present invention, by first by NaOH, sodium dithionite
It is dissolved in water and solution of stripping is obtained, then using the solution of stripping for being heated to 100-120 DEG C in high temperature cylinder, under isolation air conditionses
String is stripped；Reducing agent is dissolved in water simultaneously anaerobic decolouring wash solution is obtained, afterwards in isolation air
Under the conditions of, using above-mentioned anaerobic decolouring wash solution to stripping after string carry out one-way flushing decolouring, until discharge
Coloring material is can't detect in the flushing liquor, that is, completes the anaerobic decolouring washing process；This is due to present inventor
Found in studying for a long period of time：First, prior art is to string during decolouring washing is carried out, due in air or water
The presence of middle oxygen, colours again after causing plant fiber decoloration, thus in the present invention process thoroughly in isolation air and
Oxygen in water such that it is able to realize to be aoxidized during color liquid is washed after plant fiber decoloration and restain, fully decolourize；
Furthermore, it is dense that prior art reduces after washing of decolourizing that dyestuff in solution remains by way of iterative cycles are washed with using dilution
Degree, but dyestuff residual that can not fundamentally in emptying circulation cylinder body, further present inventor is by a large amount of creative
Work finds, by the way that anaerobic decolouring wash solution is not circulated, by way of one-way flushing, after the washing that is more beneficial for decolourizing
Dyestuff residual in solution is rinsed well completely, so as to realize rinsing decolouring rear-bank rotor housing inner dye residual concentration close to " 0 " (i.e.
Dyestuff residual concentration is close to " 0 " in the flushing liquor for ultimately forming), while compared with circulation mode of washing in the prior art,
The present invention is conducive to substantially reducing water consumption when washing is decolourized by the decolouring mode of washing using one-way flushing.
(2) string anaerobic decolouring wash mill of the present invention, structure includes high temperature cylinder and preparation bucket, the height
Inner cages and outer barrel that warm cylinder is coaxially disposed, the inside of the Inner cages set accommodating chamber and water injection pipe, the water inlet end of the water injection pipe
Delivery port with the prepared bucket is connected by connecting tube, is provided for discharging flushing liquor between the Inner cages and the outer barrel
Drainage channel, the bottom of the drainage channel sets draining valve；During so as to carrying out decolourizing to wash, prepared first with preparation bucket and stripped
Solution, then the solution that will strip is extracted out and successively after connecting tube, water injection pipe, in the inflow accommodating chamber；In isolation air conditionses
Under, in the accommodating chamber, the string is stripped using the solution of stripping；Preparation bucket is recycled to prepare afterwards
Obtain anaerobic decolouring wash solution, will preparation bucket in anaerobic decolouring wash solution extract out and successively through connecting tube, water injection pipe after,
Flow into the accommodating chamber；In the case where air conditionses are completely cut off, in the accommodating chamber, using the anaerobic decolouring wash solution to institute
Stating the string after stripping carries out one-way flushing decolouring, after the flushing liquor of formation flows through draining mesh, drainage channel successively, from
Draining valve is discharged；Above-mentioned one-way flushing decolourizes may be repeated repeatedly, and secondary one-way flushing enters liquid in high temperature cylinder before decolourizing
Row unidirectionally stirring, reduces washing dead angle, further advantageously reduces slurry amount, until the flushing discharged from draining valve
Coloring material is can't detect in liquid, that is, the anaerobic for completing described device decolourizes to wash；Plant is carried out using device of the present invention
The anaerobic of fiber decolourizes to wash, and can realize not returning color to the abundant decolouring of string, dyestuff in the flushing liquor for ultimately forming
Residual concentration is close to " 0 ", while compared with circulation mode of washing of the prior art, device of the present invention can be significantly
Reduce water consumption when washing is decolourized.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the string anaerobic decolouring wash mill that the embodiment of the present invention 1 is provided.
1- preparations bucket in figure, cage in 2-, 3- outer barrels, 4- water injection pipes, 5- drainage channels, 6- draining valves, 7- connecting tubes, 8-
Pump.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
The present embodiment provides a kind of string anaerobic decolouring wash mill, and its structure is as shown in figure 1, described device includes
Washing tube and preparation bucket 1；
The washing tube includes the interior cage 2 and outer barrel 3 that are coaxially disposed, and the inside of the interior cage 2 is provided for placing plant
The accommodating chamber of fiber and for carrying out one-way flushing to the accommodating chamber interplantation fibres (arrow show the flow direction of water in Fig. 1)
Water injection pipe 4, used as the implementation method that can be selected, water injection pipe 4 described in the present embodiment sets along the central axis of the interior cage 2
Put；The internal diameter of the water injection pipe 4 is 200-400mm；The bottom of the water injection pipe 4 is set to water inlet end, the tube wall of the water injection pipe 4 by
It is up to lower to run through some water injection holes of setting；The barrel of the interior cage 2 is from top to bottom through some draining meshes of setting；The present embodiment
In, the draining mesh is circular port, and the internal diameter of the circular port is 40-80mm.
As the implementation method that can be selected, temperature measuring equipment is set in the accommodating chamber；In the present embodiment, the thermometric dress
It is set to thermometer.
It is provided for discharging the drainage channel 5 of flushing liquor between the interior cage 2 and the outer barrel 3, the drainage channel 5
Clearance distance d is 10-30mm；The draining mesh connects setting with the drainage channel 5, and the bottom of the drainage channel 5 sets
Put draining valve 6；In the present embodiment, the draining valve 6 is air valve.
The bottom of the prepared bucket 1 sets delivery port, the delivery port of the water inlet end of the water injection pipe 4 and the prepared bucket 1
Connected by connecting tube 7, as the implementation method that can be selected, pump 8 is set in connecting tube 7 described in the present embodiment.
The present embodiment provides a kind of string anaerobic decolouring washing process, comprises the following steps：
(a) to adding water in the prepared bucket 1, backward water in add NaOH, sodium dithionite and fill it
Dissolving, preparation is divided to obtain solution of stripping；The mass ratio of the NaOH, sodium dithionite and water is 2:3:1000；
B () first closes the draining valve 6, string is positioned in the accommodating chamber of the interior cage 2, afterwards in pump 8
In the presence of, as shown in figure 1, will preparation bucket 1 in strip solution extract out and successively through connecting tube 7, the water inlet end of water injection pipe 4,
After the water injection hole of water injection pipe 4, flow into the accommodating chamber；The described de- stripping of string will be soaked with the high temperature cylinder afterwards
Color solution is warming up to 100 DEG C, is incubated 60min, and in the case where air conditionses are completely cut off, using the solution of stripping after heating to the plant
Fiber is stripped, and the waste liquid of stripping of formation is first cooled to 80 DEG C, then opens draining valve 6, by the cooling after waste liquid of stripping
After flowing through draining mesh, drainage channel 5 successively, discharged from draining valve 6；
C be dissolved in the water reducing agent sodium dithionite deoxidation in preparation bucket by (), obtain anaerobic decolouring wash solution；
The reducing agent is 0.5 with the mass ratio of the water:1000；
D () extracts the anaerobic decolouring wash solution out and successively through connecting tube (7), water injection pipe (4) from preparation bucket
After water inlet end, the water injection hole of water injection pipe (4), flow into the accommodating chamber of the high temperature cylinder；
(e) completely cut off air conditionses under, in the high temperature cylinder first by the temperature adjustment of the anaerobic water be 25 DEG C, then profit
String after being stripped to step (b) with the anaerobic decolouring wash solution carries out one-way flushing decolouring, the flushing liquor of formation
After flowing through draining mesh, drainage channel 5 successively, discharged (see Fig. 1) from draining valve 6；
F () repeats (c)-(e) steps repeatedly, liquid in high temperature cylinder is unidirectionally stirred into 2min before secondary one-way flushing,
To reduce washing dead angle, slurry amount is reduced, until can't detect coloring thing from the flushing liquor of the discharge of draining valve 6
Matter, that is, complete the anaerobic decolouring washing process.
Embodiment 2
The present embodiment provides the device that a kind of string anaerobic decolourizes washing, including washing tube and preparation bucket 1；
The washing tube includes the interior cage 2 and outer barrel 3 that are coaxially disposed, and the inside of the interior cage 2 is provided for placing plant
The accommodating chamber of fiber and the water injection pipe 4 for the accommodating chamber interplantation fibres to be carried out with one-way flushing, as what can be selected
Implementation method, water injection pipe 4 described in the present embodiment is set along the central axis of the interior cage 2；The internal diameter of the water injection pipe 4 is 200-
400mm；The bottom of the water injection pipe 4 is set to water inlet end, and the tube wall of the water injection pipe 4 is from top to bottom through some water fillings of setting
Hole；The barrel of the interior cage 2 is from top to bottom through some draining meshes of setting；In the present embodiment, the draining mesh is circle
Hole, the internal diameter of the circular port is 40-80mm.
Temperature measuring equipment is set in the accommodating chamber；In the present embodiment, the temperature measuring equipment is thermometer.
It is provided for discharging the drainage channel 5 of flushing liquor between the interior cage 2 and the outer barrel 3, the drainage channel 5
Clearance distance d is 10-30mm；The draining mesh connects setting with the drainage channel 5, and the bottom of the drainage channel 5 sets
Put draining valve 6；In the present embodiment, the draining valve 6 is air valve.
The bottom of the prepared bucket 1 sets delivery port, the delivery port of the water inlet end of the water injection pipe 4 and the prepared bucket 1
Connected by connecting tube 7, pump 8 is set in the connecting tube 7.
The present embodiment provides a kind of string anaerobic decolouring washing process, comprises the following steps：
(a) to adding water in the prepared bucket 1, backward water in add NaOH, sodium dithionite and fill it
Dissolving, preparation is divided to obtain solution of stripping；The mass ratio of the NaOH, sodium dithionite and water is 3:3:1000；
B () first closes the draining valve 6, string is positioned in the accommodating chamber of the interior cage 2, afterwards in pump 8
In the presence of, as shown in figure 1, will preparation bucket 1 in strip solution extract out and successively through connecting tube 7, the water inlet end of water injection pipe 4,
After the water injection hole of water injection pipe 4, flow into the accommodating chamber；The described de- stripping of string will be soaked with the high temperature cylinder afterwards
Color solution is warming up to 120 DEG C, is incubated 30min, and in the case where air conditionses are completely cut off, using the solution of stripping after heating to the plant
Fiber is stripped, then opens draining valve 6, by the cooling after waste liquid of stripping flow through draining mesh, drainage channel 5 successively
Afterwards, discharged (high temperature discharge can be met, the waste liquid of stripping of formation is without cooling treatment directly discharge) from draining valve 6；
C be dissolved in the water reducing agent sodium dithionite deoxidation in preparation bucket by (), obtain anaerobic decolouring wash solution；
And it is 4 with the mass ratio of the water to control the reducing agent:1000；
D () extracts the anaerobic decolouring wash solution out and successively through connecting tube (7), water injection pipe (4) from preparation bucket
After water inlet end, the water injection hole of water injection pipe (4), flow into the accommodating chamber of the high temperature cylinder；
(e) completely cut off air conditionses under, in the high temperature cylinder first by the temperature adjustment of the anaerobic water be 90 DEG C, then profit
String after being stripped to step (b) with the anaerobic decolouring wash solution carries out one-way flushing decolouring, the flushing liquor of formation
After flowing through draining mesh, drainage channel 5 successively, discharged from draining valve 6；
F () repeats (c)-(e) steps repeatedly, liquid in high temperature cylinder is unidirectionally stirred into 3min before secondary one-way flushing,
To reduce washing dead angle, slurry amount is reduced, until can't detect coloring thing from the flushing liquor of the discharge of draining valve 6
Matter, that is, complete the anaerobic decolouring washing process.
Embodiment 3
The present embodiment provides a kind of device of string anaerobic decolouring washing process, including washing tube and preparation bucket 1；
The washing tube includes the interior cage 2 and outer barrel 3 that are coaxially disposed, and the inside of the interior cage 2 is provided for placing plant
The accommodating chamber of fiber and the water injection pipe 4 for the accommodating chamber interplantation fibres to be carried out with one-way flushing, as what can be selected
Implementation method, water injection pipe 4 described in the present embodiment is set along the central axis of the interior cage 2；The internal diameter of the water injection pipe 4 is 200-
400mm；The bottom of the water injection pipe 4 is set to water inlet end, and the tube wall of the water injection pipe 4 is from top to bottom through some water fillings of setting
Hole；The barrel of the interior cage 2 is from top to bottom through some draining meshes of setting；In the present embodiment, the draining mesh is circle
Hole, the internal diameter of the circular port is 40-80mm.
Temperature measuring equipment is set in the accommodating chamber；In the present embodiment, the temperature measuring equipment is thermometer.
It is provided for discharging the drainage channel 5 of flushing liquor between the interior cage 2 and the outer barrel 3, the drainage channel 5
Clearance distance is 10-30mm；The draining mesh connects setting with the drainage channel 5, and the bottom of the drainage channel 5 is set
Draining valve 6；In the present embodiment, the draining valve 6 is air valve.
The bottom of the prepared bucket 1 sets delivery port, the delivery port of the water inlet end of the water injection pipe 4 and the prepared bucket 1
Connected by connecting tube 7, as the implementation method that can be selected, pump 8 is set in connecting tube 7 described in the present embodiment.
The present embodiment provides a kind of string anaerobic decolouring washing process, comprises the following steps：
(a) to adding water in the prepared bucket 1, backward water in add NaOH, sodium dithionite and fill it
Dissolving, preparation is divided to obtain solution of stripping；The mass ratio of the NaOH, sodium dithionite and water is 2.5:3:1000；
B () first closes the draining valve 6, string is positioned in the accommodating chamber of the interior cage 2, afterwards in pump 8
In the presence of, as shown in figure 1, will preparation bucket 1 in strip solution extract out and successively through connecting tube 7, the water inlet end of water injection pipe 4,
After the water injection hole of water injection pipe 4, flow into the accommodating chamber；The described de- stripping of string will be soaked with the high temperature cylinder afterwards
Color solution is warming up to 110 DEG C, is incubated 45min, and in the case where air conditionses are completely cut off, using the solution of stripping after heating to the plant
Fiber is stripped, and the waste liquid of stripping of formation is first cooled to 80 DEG C, then opens draining valve 6, by the cooling after waste liquid of stripping
After flowing through draining mesh, drainage channel 5 successively, discharged from draining valve 6；
C be dissolved in the water reducing agent sodium dithionite deoxidation in preparation bucket by (), obtain anaerobic decolouring wash solution；
And it is 1.2 with the mass ratio of the water to control the reducing agent:1000；
D () extracts the anaerobic decolouring wash solution out and successively through connecting tube (7), water injection pipe (4) from preparation bucket
After water inlet end, the water injection hole of water injection pipe (4), flow into the accommodating chamber of the high temperature cylinder；
(e) completely cut off air conditionses under, in the high temperature cylinder first by the temperature adjustment of the anaerobic water be 50 DEG C, then profit
String after being stripped to step (b) with the anaerobic decolouring wash solution carries out one-way flushing decolouring, the flushing liquor of formation
After flowing through draining mesh, drainage channel 5 successively, discharged from draining valve 6；
F () repeats (c)-(e) steps repeatedly, liquid in high temperature cylinder is unidirectionally stirred into 5min before secondary one-way flushing,
To reduce washing dead angle, slurry amount is reduced, until can't detect coloring thing from the flushing liquor of the discharge of draining valve 6
Matter, that is, complete the anaerobic decolouring washing process.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under enlightenment of the invention
The product of form, however, make any change in its shape or structure, it is every with skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (10)
1. a kind of string anaerobic decolouring wash mill, it is characterised in that including high temperature cylinder and preparation bucket (1)；
The high temperature cylinder includes the interior cage (2) and outer barrel (3) that are coaxially disposed, and the inside of the interior cage (2) is provided for placing plants
The accommodating chamber of fibres and the water injection pipe (4) for the accommodating chamber interplantation fibres to be carried out with one-way flushing, the water injection pipe
(4) bottom is set to water inlet end, and the tube wall of the water injection pipe (4) is from top to bottom through some water injection holes of setting；The interior cage (2)
Barrel from top to bottom through setting some draining meshes；
It is provided for discharging the drainage channel (5) of flushing liquor, the draining mesh between the interior cage (2) and the outer barrel (3)
Setting is connected with the drainage channel (5), the bottom of the drainage channel (5) sets draining valve (6)；
The bottom of the prepared bucket (1) sets delivery port, the water outlet of the water inlet end of the water injection pipe (4) and the prepared bucket (1)
Mouth is connected by connecting tube (7).
2. device according to claim 1, it is characterised in that pump (8) is set on the connecting tube (7).
3. device according to claim 1, it is characterised in that the water injection pipe (4) along the interior cage (2) central axis
Set.
4. device according to claim 1, it is characterised in that the draining mesh is circular port.
5. device according to claim 1, it is characterised in that the internal diameter of the circular port is 40-80mm.
6. a kind of string anaerobic decolouring washing process, it is characterised in that comprise the following steps：
(a) to sequentially adding NaOH, sodium dithionite and water in the prepared bucket, fully after dissolving, be made into strip it is molten
Liquid；
B () extracts and successively through connecting tube (7), water inlet end, the water injection pipe of water injection pipe (4) solution of stripping out from preparation bucket
(4) after water injection hole, flow into the accommodating chamber of the high temperature cylinder；The plant for needing to be decolourized is placed in the accommodating chamber of the high temperature cylinder
Fiber, is heated to 100-120 DEG C in the high temperature cylinder by the solution of stripping afterwards, is incubated 30-60min, and empty in isolation
Under the conditions of gas, the string is stripped using the solution of stripping after heating, the waste liquid row of flowing through successively of stripping of formation
After network of rivers eye, drainage channel (5), from draining valve (6) discharge；
C () fully after dissolving, obtains anaerobic decolouring wash solution to reducing agent and water is added in the prepared bucket；
D () extracts and successively through connecting tube (7), the water inlet of water injection pipe (4) the anaerobic decolouring wash solution out from preparation bucket
After end, the water injection hole of water injection pipe (4), flow into the accommodating chamber of the high temperature cylinder；
(e) completely cut off air conditionses under, after being stripped to step (b) using the anaerobic decolouring wash solution in the high temperature cylinder
String carry out one-way flushing decolouring；After the flushing liquor of formation flows through draining mesh, drainage channel (5) successively, from draining
Valve (6) is discharged；
F () repeats (c)-(e) steps, until can't detect coloring material in the flushing liquor of discharge, that is, complete the anaerobic
Decolouring washing process.
7. string anaerobic decolouring washing process according to claim 6, it is characterised in that in step (a), the hydrogen
The mass ratio of sodium oxide molybdena, sodium dithionite and water is 2-3:3:1000.
8. string anaerobic decolouring washing process according to claim 6, it is characterised in that in step (c), it is described also
Former agent is sodium dithionite.
9. string anaerobic decolouring washing process according to claim 6, it is characterised in that in step (c), it is described also
Former agent is 0.2 with the mass ratio of the water:1000-4:1000.
10. string anaerobic decolouring washing process according to claim 6, it is characterised in that in step (d), carry out
When the one-way flushing decolourizes, the temperature of the anaerobic decolouring wash solution is 25-90 DEG C.
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Cited By (1)
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| CN113977802A (en) * | 2021-09-03 | 2022-01-28 | 福建凯邦锦纶科技有限公司 | Method and device for producing engineering plastic grade slices by utilizing waste nylon-ammonia fabric clothes |
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