CN110606587B - Full-flow circulating dyeing system and process and application thereof - Google Patents
Full-flow circulating dyeing system and process and application thereof Download PDFInfo
- Publication number
- CN110606587B CN110606587B CN201910736396.9A CN201910736396A CN110606587B CN 110606587 B CN110606587 B CN 110606587B CN 201910736396 A CN201910736396 A CN 201910736396A CN 110606587 B CN110606587 B CN 110606587B
- Authority
- CN
- China
- Prior art keywords
- dyeing
- separator
- tank
- dye
- unit
- 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.)
- Active
Links
- 238000004043 dyeing Methods 0.000 title claims abstract description 178
- 238000000034 method Methods 0.000 title claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000005406 washing Methods 0.000 claims abstract description 45
- 239000002351 wastewater Substances 0.000 claims abstract description 35
- 239000004753 textile Substances 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 18
- 125000004122 cyclic group Chemical group 0.000 claims description 14
- 238000006386 neutralization reaction Methods 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 238000001728 nano-filtration Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920002972 Acrylic fiber Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000001223 reverse osmosis Methods 0.000 claims description 4
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- 238000011033 desalting Methods 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000000975 dye Substances 0.000 description 27
- 239000003795 chemical substances by application Substances 0.000 description 13
- 238000007639 printing Methods 0.000 description 8
- 230000002829 reductive effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 3
- 238000010835 comparative analysis Methods 0.000 description 3
- 239000000986 disperse dye Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000985 reactive dye Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000988 sulfur dye Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Coloring (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a full-flow circulating dyeing system which comprises a dyeing unit, a cleaning unit and a regeneration circulating unit, wherein the regeneration circulating unit comprises a dye capturing separator, a salinity concentrating separator, a dyeing pool and a cleaning pool; based on the dyeing system, the textile is dyed by adopting a conventional dyeing process, but the dyeing process waste water is subjected to dye capture and separation to obtain the circulating water for dyeing, and the circulating water is circularly used for next dyeing; wastewater from the soaping, reduction cleaning, water washing and other processes respectively passes through a dye capture separator and a salt concentration separator in sequence to obtain salt-free or low-salt-content colorless clear water, and the salt-free or low-salt-content colorless clear water is respectively recycled for each next water washing process. The invention starts from the source, all the procedures are respectively treated and circulated, and the invention has the advantages of simple treatment method, low comprehensive cost, good dyeing reproducibility, high wastewater circulation rate, suitability for industrial application and the like.
Description
Technical Field
The invention relates to the technical field of printing and dyeing energy-saving emission reduction technology and technology, in particular to a full-flow circulating dyeing system and technology and application thereof.
Background
The printing and dyeing industry is an important component of the textile industry, is a key industry for improving the product quality and the product added value, is a industry with high water consumption, energy consumption and pollution discharge, and is rapidly developed under the steady and rapid growth of the textile industry in recent years, and is also increasingly restricted by resources and environment. Energy conservation and emission reduction are important measures for relieving resource and environmental constraints, the sustainable development of the industry is realized, and the inevitable way for changing the economic growth mode of the industry is realized, wherein resource recycling is the basis for improving the resource utilization rate and the output benefit, is one of the important fields for implementing circular economy in the textile printing and dyeing industry, can greatly reduce COD load, and can also reduce the difficulty in wastewater treatment.
In recent years, the printing and dyeing industry is actively researching and developing various resource recycling technologies, particularly a circular dyeing technology, and making positive progress, but most of the existing circular dyeing technologies only recycle the wastewater of the dyeing process, however, in the actual industrial production, a plurality of washing processes after dyeing are the places with the largest water consumption, however, the existing technologies mostly collect and carry out subsequent treatment uniformly the regeneration cycles of the subsequent washing processes, the treatment difficulty is increased to a great extent, and especially, the loss of various auxiliary agents which can be recycled respectively in the washing residual liquid not only causes resource waste, but also increases the sewage treatment cost.
Therefore, the technical personnel in the field need to solve the problem of how to provide a full-flow cyclic dyeing system and a process thereof, which have the advantages of low comprehensive cost, high wastewater cyclic utilization rate and simple treatment method.
Disclosure of Invention
In view of the above, the invention provides a full-flow circulating dyeing system, which integrates a dye capture separator, a salt concentration separator and a circulating water tank, and selects a specific capture separation means according to the characteristics of the printing and dyeing wastewater, so that the purposes of capturing, separating and removing salt of the dye are achieved, and the regenerated water is suitable for recycling of a specific process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a full-flow cycle dyeing system comprising a dyeing unit and a regeneration cycle unit, the regeneration cycle unit comprising:
the input end of the dye catching separator is connected with the dyeing unit through a pipeline;
the input end of the salinity concentration separator is connected with the dye capture separator through a pipeline;
the circulating water tank is connected with the output end of the salinity concentrator and the input end of the dyeing unit; the circulating water tank comprises a dyeing tank and a post-treatment tank, and the input end of the dyeing tank is communicated with the dye capture separator through a pipeline.
Preferably, in the above full-process circular dyeing system, the output ends of the dye capture separator and the salinity concentration separator are both connected with a waste treatment unit, and the waste treatment unit is provided with a discharge port.
The beneficial effects of the above technical scheme are: the waste treatment unit is used for collecting concentrated dye solution, concentrated salt wastewater, used solid of the catching agent material and the like, and is convenient for subsequent treatment operation.
Preferably, in the above full-flow circulation dyeing system, the dyeing unit includes a dyeing process, a neutralization process, a soaping process, a reduction cleaning process, a water washing process, and the like, and wastewater generated in each process passes through the dye capture separator in sequence.
Preferably, in the above full-flow circular dyeing system, the post-treatment tank includes a neutralization tank, a soaping tank, a reduction tank and a washing tank, and the output ends of the dyeing tank, the neutralization tank, the soaping tank, the reduction tank and the washing tank are respectively communicated with the input end of the dyeing unit.
The beneficial effects of the above technical scheme are: the dyeing tank, the neutralization tank, the soaping tank, the reduction tank and the water washing tank respectively correspond to the dyeing process, the neutralization process, the soaping process, the reduction cleaning process and the water washing process of the dyeing unit in sequence, so that the separate treatment of different processes is realized, the treatment difficulty is reduced to a great extent, and the sewage treatment cost is reduced.
Preferably, in the above full-flow circulation dyeing system, the dyeing unit is dyeing and washing equipment such as an overflow dyeing machine, an airflow dyeing machine and a washing machine for textile processing.
Preferably, in the above-mentioned one full-cycle dyeing system, the dye trap separator is selected from one of a membrane separator, a leaching resin trap separator and a dyeing raffinate decoloring separator.
Preferably, in the above full-flow circulation dyeing system, the membrane separator is a nanofiltration membrane with molecular weight cut-off of 500-2000 daltons.
The beneficial effects of the above technical scheme are: the molecular weight cut-off is defined so that the nanofiltration membrane can remove all the dye in the wastewater.
Preferably, in the above full-flow cycle dyeing system, the extraction resin capture separator is composed of an alkylamine extraction resin capture dye reaction device and a filter.
The beneficial effects of the above technical scheme are: the extraction resin trapping separator is used for trapping and adsorbing the dye in the wastewater by adding the extraction resin, and then colorless clear water is obtained by filtering and separating, so that the aim of trapping and adsorbing the dye by using the extraction resin is mainly fulfilled.
Preferably, in the above full-flow cycle dyeing system, the dyeing raffinate decoloring separator consists of a quaternary ammonium salt polymer/anionic polymer decoloring agent/activated carbon adsorbent/resin adsorbent and a filter.
The beneficial effects of the above technical scheme are: decolorizing the dyeing residual liquid, selecting a decolorizing agent to react to generate a substance insoluble in water, and filtering and separating to obtain clear water.
Preferably, in the above full-cycle dyeing system, the salt concentration separator is a membrane concentrator.
Preferably, in the above full-process cycle dyeing system, the salt concentration separator is one of a nanofiltration membrane concentrator and a reverse osmosis membrane concentrator.
The beneficial effects of the above technical scheme are: the use of membrane concentrator has reached the purpose of desalination, and the nanofiltration membrane realizes getting rid of bivalent and multivalent ion salinity, and reverse osmosis membrane all has higher clearance to all salinity.
The invention also discloses a dyeing process based on the full-flow circulating dyeing system, which comprises the following steps:
(1) Wastewater generated in a dyeing process in the dyeing unit is captured and separated through a dye capturing separator, and obtained colorless clear water is stored in a dyeing tank and is circularly used for the dyeing process;
(2) The waste water generated in the post-treatment process in the dyeing unit is firstly subjected to dye capture and separation in the residual liquid through a dye capture separator, and then subjected to desalting treatment through a salt concentration separator, and the obtained colorless clear water is stored in different post-treatment tanks and is circularly used in the corresponding post-treatment process.
Preferably, in one of the above-described full-cycle dyeing processes, the dyes include, but are not limited to, reactive dyes, disperse dyes, cationic dyes, acid dyes, sulfur dyes, and direct dyes.
Preferably, in the above full-flow circulation dyeing process, the salt is one or a mixture of several of inorganic salts such as sodium chloride, sodium sulfate, potassium chloride, potassium sulfate, calcium chloride, calcium sulfate, magnesium chloride, aluminum sulfate and the like.
The invention also discloses application of the dyeing system in full-process circular dyeing of textiles.
Preferably, in the above-mentioned application of one full-cycle dyeing, the textile includes cellulose fiber textile, polyester fiber textile, acrylic fiber textile and protein fiber textile.
According to the technical scheme, compared with the prior art, the full-flow cyclic dyeing system and the dyeing process thereof are disclosed, the wastewater of the dyeing process and the subsequent washing processes is respectively differentiated, separated and regenerated and is differentially and cyclically utilized, so that the printing and dyeing wastewater resources, the printing and dyeing auxiliary agent resources such as acid-base salt, accelerating agent, soaping agent, reductive cleaner, dyeing acid and the like which can be cyclically utilized in the wastewater and the heat energy in the wastewater are recycled to the maximum extent, and meanwhile, the differentiated regeneration cyclic treatment reduces the treatment difficulty and saves the comprehensive treatment cost of the wastewater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic overall flow diagram of the present invention;
FIG. 2 is a graph showing a comparison of KS value curves of cyclic dyeing with reactive dyes and a conventional dyeing process;
FIG. 3 is a graph showing a comparison of KS value curves for cyclic dyeing of disperse dyes and a conventional dyeing process;
FIG. 4 is a graph showing a KS value curve in comparison of cyclic dyeing with cationic dyes and a conventional dyeing process;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the full-flow cycle dyeing system disclosed by the invention, 1, 2, 3, 4 and 5 are the discharge outlets of the dyeing unit and are connected with the input end a of the dye catching separator; b is the output end of the dye catching separator and is connected with the input end x of the salinity concentrating separator through pipelines 7, 8, 9 and 10, and is connected with the input end 6 of the dyeing tank through a pipeline 20; then the output end y of the salinity concentration separator is respectively connected with the input ends 11, 12, 3 and 14 of the neutralization tank, the soaping tank, the reduction tank and the washing tank, and is connected with the input end 6 of the dyeing tank through a pipeline 20 (when the textiles are circularly dyed, strong brine of the salinity concentration separator can also enter the dyeing tank through the route, the color of the dye is removed by the dye capture separator, the route is colorless clear water, only contains salinity and can be used for the subsequent dyeing process); finally, the output ends of the circulating water tank are respectively connected with the input ends of the dyeing units through pipelines 15, 16, 17, 18 and 19; in addition, the dye capture separator and the salinity concentration separator are respectively provided with outlets 21 and 22 connected with the waste disposal unit.
The effect achieved by the full-process cyclic dyeing process of the present invention is illustrated by the following specific examples.
Example 1:
the embodiment discloses a process for carrying out full-process circular dyeing on cotton textiles by using the full-process circular dyeing system, which adopts reactive dyes for dyeing.
The common dyeing process comprises the following steps:
the dyeing prescription is as follows: cotton fabric: 2kg, bath ratio 1: 6% (owf), sodium chloride: 60g/L, laking base XA:3g/L, soaping agent XA:2g/L; the dyeing process comprises the following steps: dyeing (60 ℃x60 min) → neutralization (HAc: 0.5g/L,80 ℃x15 min) → soaping (80 ℃x15 min) → hot water washing (80 ℃x15 min) → warm water washing (60 ℃x15 min) → cold water washing (10 min);
regeneration cycle treatment:
after dyeing is finished, dyeing wastewater passes through a dye capture separator (with the molecular weight cutoff of 1000 daltons) to obtain dyeing circulating clear water and is temporarily stored in the dyeing pond for later use, and the wastewater of neutralization, soaping, hot water washing, warm water washing and cold water washing respectively passes through a membrane dye capture separator and a reverse osmosis membrane salt concentration separator and is temporarily stored in the corresponding circulating water ponds respectively.
The circulating dyeing process comprises the following steps:
the dyeing prescription is as follows: 2kg of cotton fabric, bath ratio 1: 6% (owf), sodium chloride: 15g/L, recycle base XA:1g/L, soaping agent XA:1g/L; the dyeing process comprises the following steps: dyeing (60 ℃ C.. Times.60 min) → neutralization (HAc: 0.5g/L,80 ℃ C.. Times.15 min) → soaping (80 ℃ C.. Times.15 min) → hot washing (80 ℃ C.. Times.15 min) → warm washing (60 ℃ C.. Times.15 min) → cold washing (10 min); the water used in the dyeing, neutralization, soaping and hot-warm-cold water washing procedures is from the regeneration circulating water in the corresponding circulating water tank.
See table 1 for comparative analysis of staining results:
TABLE 1
The data results in table 1 show that the chroma of the dyed recycled water is reduced to about 6 times after the capture and separation, and the dyed recycled water is nearly colorless when observed by naked eyes. From the aspect of energy conservation and emission reduction, the water-saving rate of the circular dyeing process reaches 95 percent, a large amount of dyeing auxiliaries are saved, the aim of recycling printing and dyeing resources is fulfilled, and the environment benefit and the economic benefit are better.
The embodiment starts from the source, the wastewater of all the operation procedures is respectively treated and circulated, the method has the characteristics of simple treatment method, low comprehensive cost, good dyeing reproducibility, high wastewater circulation rate, suitability for industrial application and the like, realizes the reutilization of a large amount of dyeing promotion salt, soaping agent and fixation alkali and the recycling of the dyeing wastewater of the whole process, and achieves the purpose of deep water conservation.
Example 2:
the embodiment discloses a full-process circular dyeing process for polyester fabrics by using the full-process circular dyeing system, which adopts disperse dyes for dyeing.
The common dyeing process comprises the following steps:
the dyeing prescription is as follows: polyester fabric: 2kg, bath ratio 1: 3% (owf), HAc:0.5g/L, high temperature leveling agent XA:1g/L, reducing cleaning agent XA:3g/L; the dyeing process comprises the following steps: dyeing (1-2 ℃/min heating to 130 ℃ x 45min, cooling to 80 ℃) → reductive cleaning (80 ℃ x 15 min) → hot washing (80 ℃ x 15 min) → warm water washing (60 ℃ x 15 min) → cold water washing (10 min);
regeneration cycle treatment:
after dyeing is finished, dyeing wastewater passes through the extraction resin capture separator to obtain dyeing circulating clear water and is temporarily stored in the dyeing tank for later use, and wastewater subjected to reduction cleaning, hot water washing, warm water washing and cold water washing respectively passes through the extraction resin capture separator and the nanofiltration membrane salinity concentration separator and is temporarily stored in the corresponding circulating water tanks for circulating dyeing.
The circulating dyeing process comprises the following steps:
the dyeing prescription is as follows: polyester fabric: 2kg, bath ratio 1: 3% (owf), HAc:0.1g/L, high temperature leveling agent XA:0.5g/L, reducing detergent XA:3g/L; the dyeing process comprises the following steps: dyeing (1-2 ℃/min heating to 130 ℃ x 45min, cooling to 80 ℃) → reductive cleaning (80 ℃ x 15 min) → hot washing (80 ℃ x 15 min) → warm water washing (60 ℃ x 15 min) → cold water washing (10 min); the water used in the dyeing, the reduction cleaning and the hot warm cold water washing procedures is from the regeneration circulating water in the corresponding circulating water tank.
See table 2 for comparative analysis of staining results:
TABLE 2
The data in table 2 show that the chroma of the dyed recycled water is reduced to about 8 times after the dyed recycled water is captured and separated, and the dyed recycled water is nearly colorless after visual observation. From the aspect of energy saving and emission reduction, the cyclic dyeing process not only saves water by 94%, but also saves a large amount of dyeing acid HAc and leveling agent, realizes the purpose of cyclic utilization of partial dyeing resources, and has better environmental benefit and economic benefit.
The embodiment starts from the source, the wastewater of all the operation procedures is respectively treated and circulated, the method has the characteristics of simple treatment method, low comprehensive cost, good dyeing reproducibility, high wastewater circulation rate, suitability for industrial application and the like, the repeated utilization of a large amount of dyeing acid and the cyclic utilization of the dyeing wastewater in the whole process are realized, and the purpose of deep water conservation is achieved.
Example 3
The embodiment discloses a process for carrying out full-flow circular dyeing on acrylic yarns by using the full-flow circular dyeing system, which adopts cationic dye for dyeing.
The common dyeing process comprises the following steps:
the dyeing prescription is as follows: acrylic fiber yarn: 2kg, bath ratio 1: XGL gold 0.06% + XGRL red 0.04% + XBL blue 0.07% (owf), levelling agent 1227:3g/L; the dyeing process comprises the following steps: dyeing (1-2 ℃/min heating to 98 ℃ x 30min, cooling to 80 ℃) → warm water washing (60 ℃ x 15 min) → cold water washing (10 min);
regeneration cycle treatment:
and after dyeing is finished, dyeing wastewater passes through a dyeing raffinate decoloring separator to obtain dyeing circulating clear water and is temporarily stored in a dyeing pond for later use, and wastewater subjected to warm washing and cold washing respectively passes through the dyeing raffinate decoloring separator and a nanofiltration membrane salinity concentration separator and is temporarily stored in corresponding circulating water ponds respectively for circulating dyeing.
The circulating dyeing process comprises the following steps:
the dyeing prescription is as follows: acrylic fiber yarn: 2kg, bath ratio 1: XGL gold 0.06% + XGRL red 0.04% + XBL blue 0.07% (owf), levelling agent 1227:2g/L; the dyeing process comprises the following steps: dyeing (1-2 ℃/min heating to 98 ℃ x 30min, cooling to 80 ℃) → warm water washing (60 ℃ x 15 min) → cold water washing (10 min); the water for dyeing and warm and cold water washing processes is from the regenerated circulating water in respective circulating water tanks.
See table 3 for comparative analysis of staining results:
TABLE 3
The data in table 3 show that the chroma of the dyed recycled water is reduced to about 3 times after being captured and separated, and the dyed recycled water is nearly colorless when observed by naked eyes. From the aspect of energy conservation and emission reduction, the cyclic dyeing process not only has the water-saving rate of more than 90 percent and remarkable energy conservation and emission reduction effects, but also has better environmental benefit and economic benefit.
The embodiment starts from the source, the wastewater of all the operation procedures is respectively treated and circulated, the method has the characteristics of simple treatment method, low comprehensive cost, good dyeing reproducibility, high wastewater circulation rate, suitability for industrial application and the like, the cyclic utilization of the dyeing wastewater in the whole process is realized, and the purpose of deep water saving is achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A full-flow cycle dyeing system, comprising a dyeing unit and a regeneration cycle unit, wherein the regeneration cycle unit comprises:
the input end of the dye catching separator is connected with the dyeing unit through a pipeline; the dye catching separator is selected from one of a membrane separator, a levextrel resin catching separator and a dyeing raffinate decoloring separator;
the input end of the salinity concentration separator is connected with the dye capture separator through a pipeline;
the circulating water tank is connected with the output end of the salinity concentration separator and the input end of the dyeing unit; the circulating water tank comprises a dyeing tank and a post-treatment tank, and the input end of the dyeing tank is communicated with the dye capturing separator through a pipeline; the post-treatment tank comprises a neutralization tank, a soaping tank, a reduction tank and a washing tank, and the output ends of the dyeing tank, the neutralization tank, the soaping tank, the reduction tank and the washing tank are respectively communicated with the input end of the dyeing unit;
the dyeing unit comprises a dyeing process, a neutralization process, a soaping process, a reduction cleaning process and a water washing process, and wastewater generated in each process passes through the dye catching separator in sequence;
the output ends of the dye capturing separator and the salinity concentrating separator are both connected with a waste treatment unit;
the dyeing process of the full-flow circulating dyeing system comprises the following steps:
(1) Wastewater generated in a dyeing process in the dyeing unit is captured and separated through a dye capturing separator, and obtained colorless clear water is stored in a dyeing tank and is circularly used for the dyeing process;
(2) The waste water generated in the post-treatment process in the dyeing unit is firstly subjected to dye capture and separation in the residual liquid through a dye capture separator, and then subjected to desalting treatment through a salt concentration separator, and the obtained colorless clear water is stored in different post-treatment tanks and is circularly used in the corresponding post-treatment process.
2. The full-cycle dyeing system according to claim 1, wherein said salt concentration separator is a membrane concentrator.
3. The full-flow cycle dyeing system according to claim 1 or 2, wherein said salt concentration separator is a nanofiltration membrane concentrator or a reverse osmosis membrane concentrator.
4. The full-flow cycle dyeing system according to claim 1, wherein said dyeing unit is a dyeing and washing apparatus for textile processing.
5. Use of the dyeing system according to any one of claims 1 to 4 for full-run cyclic dyeing of textiles.
6. The application of the full-flow cycle dyeing according to claim 5, wherein the textile includes but is not limited to cellulose fiber textile, polyester fiber textile, acrylic fiber textile and protein fiber textile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736396.9A CN110606587B (en) | 2019-08-09 | 2019-08-09 | Full-flow circulating dyeing system and process and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736396.9A CN110606587B (en) | 2019-08-09 | 2019-08-09 | Full-flow circulating dyeing system and process and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110606587A CN110606587A (en) | 2019-12-24 |
| CN110606587B true CN110606587B (en) | 2023-03-10 |
Family
ID=68889926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910736396.9A Active CN110606587B (en) | 2019-08-09 | 2019-08-09 | Full-flow circulating dyeing system and process and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110606587B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205105A (en) * | 2007-12-18 | 2008-06-25 | 中国兵器工业第五二研究所 | Regeneration treatment and cyclic utilization method of printing and dyeing wastewater |
| CN102505388A (en) * | 2011-11-04 | 2012-06-20 | 广东溢达纺织有限公司 | Method for dyeing fabric by using reactive dye and soaping fabric dyed by reactive dye, and equipment |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN102826673A (en) * | 2011-06-15 | 2012-12-19 | 浙江龙盛化工研究有限公司 | Cleaning treatment method of dying industrial acidic wastewater |
| CN103726367A (en) * | 2013-12-31 | 2014-04-16 | 浙江亿得化工有限公司 | Clean production process for dyeing residual liquid of disperse dye |
| CN104120577A (en) * | 2014-07-28 | 2014-10-29 | 湖州纳尼亚实业股份有限公司 | Dyeing machine waste water cyclic utilization device and method |
| CN104674570A (en) * | 2015-02-13 | 2015-06-03 | 绍兴文理学院 | Recycling dyeing method of dyeing wastewater of reactive dyes |
| CN107265750A (en) * | 2017-03-28 | 2017-10-20 | 刘奎东 | A kind of cotton dyeing process spent water reclaiming system |
| CN107686154A (en) * | 2017-10-12 | 2018-02-13 | 东莞宝丽美化工有限公司 | The system processing method of the recyclable dyeing of reactive dyed wastewater |
| CN108411542A (en) * | 2018-05-09 | 2018-08-17 | 浙江丝科院轻纺材料有限公司 | A kind of ecological circulation coloring system and colouring method |
| CN112707550A (en) * | 2021-03-22 | 2021-04-27 | 浙江蓝宇数码科技股份有限公司 | Reactive dyeing wastewater treatment method, concentrated solution color paste and preparation method thereof |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4165288A (en) * | 1977-07-05 | 1979-08-21 | Riegel Textile Corporation | Process of treating waste water from a textile vat dyeing operation to produce a concentrate for reuse |
| US5763382A (en) * | 1996-01-03 | 1998-06-09 | Cyclo3Pss Textile Systems, Inc. | Cold water wash formula |
| DE29606930U1 (en) * | 1996-04-17 | 1996-09-26 | Kunze, Lutz, Dipl.-Ing. (FH), 88662 Überlingen | Device for recycling laundry water |
| JP3463258B2 (en) * | 1998-02-20 | 2003-11-05 | Ｙｋｋ株式会社 | Processing method and apparatus for strips |
| US7048842B2 (en) * | 2001-06-22 | 2006-05-23 | The Procter & Gamble Company | Electrolysis cell for generating chlorine dioxide |
| CN1304307C (en) * | 2005-10-09 | 2007-03-14 | 天津工业大学 | Dyeing waste-water decolorizing degradation, recovery and utilization |
| CN101050589A (en) * | 2007-04-29 | 2007-10-10 | 常熟市亨时特染织有限公司 | Dyeing process for viscose cheese |
| CN101302072B (en) * | 2008-06-27 | 2010-06-02 | 东南大学 | Dye or pesticide waste water reverse osmosis-nanofiltration combined membrane separation material recovery process and apparatus |
| CN101525193A (en) * | 2009-04-24 | 2009-09-09 | 姚佩军 | Processing method for printing and dyeing waste water recycling |
| CN102276010B (en) * | 2011-07-21 | 2013-02-06 | 东华大学 | Method for on-line treatment and recycle of printing and dyeing washing waste water and device thereof |
| CN102976446B (en) * | 2012-12-21 | 2014-07-09 | 南京大学 | Method for synchronously removing and stepwise recovering sulfoacid dye and heavy metal ion through resin |
| CN104609605B (en) * | 2015-02-03 | 2017-02-22 | 大连理工大学 | Device and method for realizing printing and dyeing dyed wastewater reuse and dye recovery |
| CN104829028B (en) * | 2015-04-23 | 2017-04-05 | 南京工业大学 | A kind of Nanofiltering membrane continuous dyeing process |
| CN105862458A (en) * | 2016-05-09 | 2016-08-17 | 长兴琪华纺织有限公司 | Efficient water-saving polyester dyeing process |
| CN107446381A (en) * | 2017-07-13 | 2017-12-08 | 青岛海湾集团有限公司 | The method that nitrating wasting acid of Disperse Blue-56 recycles |
| CN108558140B (en) * | 2018-05-08 | 2019-09-24 | 杭州富瑞司纺织有限公司 | A kind of dyeing fabric sewage water treatment method |
| CN114835300B (en) * | 2022-05-18 | 2023-07-11 | 浙江丝绸科技有限公司 | Method for treating printing and dyeing sewage by eluting, regenerating and recycling trapping agent extraction resin |
-
2019
- 2019-08-09 CN CN201910736396.9A patent/CN110606587B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205105A (en) * | 2007-12-18 | 2008-06-25 | 中国兵器工业第五二研究所 | Regeneration treatment and cyclic utilization method of printing and dyeing wastewater |
| CN102534056A (en) * | 2010-12-14 | 2012-07-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN102826673A (en) * | 2011-06-15 | 2012-12-19 | 浙江龙盛化工研究有限公司 | Cleaning treatment method of dying industrial acidic wastewater |
| CN102505388A (en) * | 2011-11-04 | 2012-06-20 | 广东溢达纺织有限公司 | Method for dyeing fabric by using reactive dye and soaping fabric dyed by reactive dye, and equipment |
| CN103726367A (en) * | 2013-12-31 | 2014-04-16 | 浙江亿得化工有限公司 | Clean production process for dyeing residual liquid of disperse dye |
| CN104120577A (en) * | 2014-07-28 | 2014-10-29 | 湖州纳尼亚实业股份有限公司 | Dyeing machine waste water cyclic utilization device and method |
| CN104674570A (en) * | 2015-02-13 | 2015-06-03 | 绍兴文理学院 | Recycling dyeing method of dyeing wastewater of reactive dyes |
| CN107265750A (en) * | 2017-03-28 | 2017-10-20 | 刘奎东 | A kind of cotton dyeing process spent water reclaiming system |
| CN107686154A (en) * | 2017-10-12 | 2018-02-13 | 东莞宝丽美化工有限公司 | The system processing method of the recyclable dyeing of reactive dyed wastewater |
| CN108411542A (en) * | 2018-05-09 | 2018-08-17 | 浙江丝科院轻纺材料有限公司 | A kind of ecological circulation coloring system and colouring method |
| CN112707550A (en) * | 2021-03-22 | 2021-04-27 | 浙江蓝宇数码科技股份有限公司 | Reactive dyeing wastewater treatment method, concentrated solution color paste and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110606587A (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102745761B (en) | Recovery and utilization method for dyeing residual liquid of reactive dye | |
| CN101549912A (en) | Mercerized waste alkali recovery process and system thereof | |
| CN106186002A (en) | A kind of preparation method of battery-level lithium carbonate | |
| CN101376747B (en) | Method for recycling bipseudoindoxyl dye from indigo dyeing waste water | |
| CN107352727B (en) | Method for realizing zero discharge of coal chemical industry wastewater | |
| CN104674570B (en) | Recycling dyeing method of dyeing wastewater of reactive dyes | |
| WO2022142397A1 (en) | Recycling process for viscose fiber sodium sulfate waste liquid | |
| CN105923704A (en) | Forward osmosis draw fluid recycling method, wastewater treatment method and treatment device | |
| CN103726367A (en) | Clean production process for dyeing residual liquid of disperse dye | |
| CN105565528B (en) | A kind of method and device for realizing mercerizing diluting alkali Recovery Purifying | |
| CN110606587B (en) | Full-flow circulating dyeing system and process and application thereof | |
| WO2019033805A1 (en) | Recovering system and method for reactive dye dyeing residual liquid | |
| CN101070166A (en) | Method and apparatus for purifying and recovering silking dirt alkali adopting superfiltering film | |
| CN104445771A (en) | Catalytic oxidation evaporation recovery system for mercerizing waste alkali liquid of yarn-dyed fabric | |
| CN103349909A (en) | Post-processing method for squeezed alkali liquid in diffusion dialysis recycling viscose manufacture | |
| Li et al. | Advanced treatment of spent acid dyebath and reuse of water, salt and surfactant therein | |
| CN110983684B (en) | Full-process circulating dyeing method and dyeing system for real silk fabric | |
| CN202490504U (en) | Purification recovery device of mercerizing waste alkali liquor | |
| CN202625970U (en) | Purification and recovery device for denim mercerization exhausted lye | |
| CN107265750B (en) | Cotton dyeing process sewage recycling system | |
| CN112588123B (en) | Aramid loose nanofiltration membrane as well as preparation method and application thereof | |
| JPH04190892A (en) | Decoloring method for waste liquid | |
| CN204198542U (en) | A kind of evaporation of the catalyzed oxidation for yarn-dyed fabric mercerized waste alkali liquid recovery system | |
| CN112875951B (en) | Method for recycling printing and dyeing pretreatment wastewater | |
| CN220412983U (en) | Dyeing and finishing sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211009 Address after: 310000 room 1804, No. 105, Stadium Road, Xiacheng District, Hangzhou, Zhejiang Applicant after: ZHEJIANG SILK TECHNOLOGY Co.,Ltd. Address before: No. 159 Chuangye street, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Applicant before: ZHEJIANG SILK ACADEMY OF SCIENCES-TEXTILE MATERIAL Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |