CN102191692A - Cooperative pretreatment method for biological catalysis and controlled oxidation of cotton and cotton-type fabrics - Google Patents
Cooperative pretreatment method for biological catalysis and controlled oxidation of cotton and cotton-type fabrics Download PDFInfo
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Abstract
The invention relates to a cooperative pretreatment method for biological catalysis and controlled oxidation of cotton and cotton-type fabrics, comprising the following steps: (1) preparing a biological compound enzyme preparation, a biological enzyme synergist and a non-ionic surfactant into an enzyme working solution, wherein the pH of a processing bath is 6-7.5; padding the fabrics into the working solution; carrying out heat preservation; (2) washing the processed fabrics with cold water; padding the fabrics into a hydrogen peroxide bleaching solution containing the controlled decomposition additive of hydrogen peroxide; and steaming, washing with water and drying to obtain the finished products. In the method, high-density strong base is not required to serve as a scouring agent, the pH value of pretreatment waste water is 7-8, the chromaticity is low, the COD (Chemical Oxygen Demand) value is lowered by 30% compared with that of the traditional alkali kiering pretreatment technology, the water is saved by 10-30%, and the steam and electricity can be saved by 20%. The indexes (whiteness, capillary effect, water absorption, cotton seed hull strainaway rate, desizing rate, strong force and the like) of the processed cotton and cotton-type fabric all reach the quality indexes of a semi-product, cotton seed hulls can be completely removed, and the fabrics have vivid color and good levelling property after being dyed.
Description
Technical field
The invention belongs to the pre-treatment field of fabric, particularly relate to the living things catalysis and the collaborative pre-treating method of controlled oxidation of a kind of cotton and cotton type fabric.
Background technology
The heavily contaminated operation of cotton and cotton type fabric (cotton and other natural or synthetic fiber blending or MIXED FABRIC) printing and dyeing pre-treatment mainly comprises 3 Dow Chemical wet treatment process: destarch, concise and bleaching.Its main task is to remove slurry on the grey cloth and the natural impurity in the cotton fiber, to guarantee carrying out smoothly of follow-up dyeing and finishing processing.
When weaving cotton cloth, carry out smoothly, will carry out starching to warp thread before weaving and handle for woven.Starching is favourable to weaving, but brought difficulty, the slurry on the grey cloth can stain dyeing and finishing working solution and of the infiltration of dying of obstruction material for follow-up dyeing and finishing processing, therefore in dyeing and finishing pre-treatment processing to fibrous inside, remove the slurry on the fabric, i.e. destarch is handled.Traditional desizing method is the highly basic high-temperature processing technology at present.The disadvantage that its exists is: 1. in the waste water of Chan Shenging not only alkalescence strong (pH＞11), colourity is dark, COD is high (COD concentration is up to 3～60,000 mg/l in the desized wastewater), 2. water consumption and energy consumption (the fresh water water withdrawal of one ton of fabric of processing is about 100 tons) greatly; 3. destarch rate is low, is about 50%-70%.
In dyeing and finishing processing, the second road wet process operation is concise (kiering) in the pre-treatment of cotton and cotton type fabric.The same with destarch, traditional method for refining also is the highly basic high-temperature processing technology at present.The purpose of kiering is natural commensal such as pectic substance, waxy substance, nitrogen substance, ash and the cotton seed hulls impurity of removing in the cotton fiber such as (unginned cotton are attached in the fiber through the relic of the cotton seed hulls of a small amount of grating after the cotton ginning), makes fabric obtain good water imbibition and clean outward appearance.A large amount of fresh water and the steam equal energy sources of tradition alkali refining process consumption, the alkaline waste water of generation makes the COD/BOD value quite high.
Summary of the invention
Technical problem to be solved by this invention provides a kind of cotton and catalysis of cotton type biological fabric and the collaborative pre-treating method of controlled oxidation, this method does not use high concentration highly basic to do scouring agent, destarch rate height, pre-treatment pH value of waste water 7-8, colourity is low, the COD value is moved back than traditional alkali and is boiled pre-treatment process reduction by 30%, and water saving 10-30% saves steam and electricity 20%.Cotton and the every index of cotton type fabric (whiteness, capillary effect, water imbibition, cotton seed hulls clearance, destarch rate, brute force etc.) after treatment all reaches the semi-products quality index, and cotton seed hulls is removed fully, bright-coloured, the good level-dyeing property of dyeing back coloured light.
A kind of cotton of the present invention and the catalysis of cotton type biological fabric and controlled oxidation are worked in coordination with pre-treating method, comprising:
(1) adopt biological complex enzyme preparation, biology enzyme synergist and non-ionic surface active agent preparation enzyme working solution, handling and bathing pH is 6-7.5; Fabric is padded described enzyme working solution at 20-45 ℃, and the fabric pick-up rate is 90-110%; The fabric that will pad the enzyme working solution is at 20-80 ℃ of insulation 0.5-16h;
(2) fabric after step (1) is handled is through cold water washing, removes catabolite in the enzyme refinery practice and the impurity on the cloth cover; Fabric behind the cold water washing pads the hydrogen peroxide bleaching liquid that contains hydrogen peroxide controlled decomposition auxiliary agent, pick-up rate 90-110%, afterwards in the decatize case 98-102 ℃ handled 35-90 minute, washing, oven dry promptly.
Fabric in the described step (1) is cotton and other natural or the synthetic fiber blending or the interweaving machine fabric of all size and kind.
The concentration of the biological complex enzyme preparation in the described step (1) is 2-6g/L, and biology enzyme synergist concentration is 0.5-2g/L, and the concentration of non-ionic surface active agent is 1-4g/L.
Biological complex enzyme preparation in the described step (1) is the compound of amylase, pectase, cellulase, paper pulp enzyme, at, protease and lipase.
Biological complex enzyme preparation in the described step (1) is the compound of amylase, pectase, cellulase, paper pulp enzyme, at, protease and the lipase of mass percent 27-32%: 12-17%: 10-16%: 15-19%: 9-12%: 8-13%: 6-9%; It is better to use Shang Haihan to reach the biological complex enzyme preparation HD-100 effect that dyeing and finishing Co., Ltd produces.
Biology enzyme synergist in the described step (1) be sorbierite, calcium chloride, calcium lactate compound.
Biology enzyme synergist in the described step (1) is sorbierite, the calcium chloride of mass percent 13-22%: 32-44%: 41-52%, the compound of calcium lactate.
It is better that biology enzyme synergist in the described step (1) uses Shang Haihan to reach the biology enzyme synergist HD-101 effect that dyeing and finishing Co., Ltd produces.
Non-ionic surface active agent in the described step (1) is as wetting and penetrating agent, and wherein non-ionic surface active agent is polyethylene glycols or polyethenoxy ether class (be specially in fatty alcohol-polyoxyethylene ether, polyoxyethylene sorbitan fatty acid ester, the Nonidet P40 a kind of).
The hydrogen peroxide bleaching liquid that contains hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) consists of: 100% hydrogen peroxide 5-20g/L, hydrogen peroxide controlled decomposition auxiliary agent 5-20g/L, bleeding agent 1-4g/L, pH value 10.5-11.
Hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) is several compounds in nano hydrated silica, polyphosphonates, sodium phosphate trimer, calgon, sodium pyrophosphate, ethylenediamine tetramethylene phosphonic acid, diethyl pentetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine pentamethylene phosphonic acids, maleic acid, phytic acid, the polyethylene polyamine polyalkylene phosphonate.
Hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) is mass percent 10-18%: 20-24%: 13-18%: 11-17%: 15-21%: 17-22%: nano hydrated silica, polyphosphonates, sodium phosphate trimer, calgon, sodium pyrophosphate, the compound of polyethylene polyamine polyalkylene phosphonate.
Hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) is mass percent 12-19%: 13-17%: 11-18%: 12-16%: 15-23%: 18-25%: ethylenediamine tetramethylene phosphonic acid, diethyl pentetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine pentamethylene phosphonic acids, maleic acid, the compound of phytic acid.
It is better that hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) uses Shang Haihan to reach the hydrogen peroxide controlled decomposition auxiliary agent HD-181 effect that dyeing and finishing Co., Ltd produces.
Treatment temperature is 98-102 ℃ in the decatize case in the described step (2), time 35-90min.
Washing in the described step (2) is the washings of four lattice, and promptly 85 ℃ of washing 2 lattice are washed 1 lattice for 60 ℃, and normal temperature is washed 1 lattice.
The present invention adopts cotton and cotton type fabric (cotton and other natural or synthetic fiber blending or MIXED FABRIC) pretreating technology for printing and dyeing of biology enzyme cold dome and low alkali process technology reform traditional, can reduce the fresh water consumption and the wastewater flow rate of fabrics printing and dyeing pre-treatment processing, cut down the consumption of energy, can significantly improve the emission biodegradability energy in the printing and dyeing pre-treatment waste water, thereby solve the 'bottleneck' restrictions difficult problem in the current textile industry energy-saving and emission-reduction work.
The present invention utilizes the efficient catalytic effect of biological complex enzyme preparation and biology enzyme synergist, impurity and expanded cotton seed hullss such as the starch on the cotton type fabric of fully degrading, pectin, lignin, cotton wax; And by the online regulation and control oxidizing process of hydrogen peroxide controlled decomposition auxiliary agent, efficient degradation polyvinyl alcohol chemical sizwes such as (PVA) in decatize; Make the slurry (starch, polyvinyl alcohol etc.) that contains on the former cloth can both be degraded to micromolecule, be easy to clean and remove; Natural colouring matter and the cotton seed hulls in the catalytic decomposition cotton fiber simultaneously, in washing process with its thorough eccysis.Cotton and the every index of cotton type fabric (whiteness, capillary effect, water imbibition, cotton seed hulls clearance, destarch rate, brute force etc.) after treatment all reaches the semi-products quality index, and cotton seed hulls is removed fully, bright-coloured, the good level-dyeing property of dyeing back coloured light.
Beneficial effect
(1) the present invention has broken through conventional biology enzyme and moves back and boil the deficiency that technology is unsuitable for handling the mixed slurry starching COTTON FABRIC that contains the PVA slurry; Broken through conventional biology enzyme and moved back and boil the deficiency that technology is unsuitable for handling heavily fabric, broken through conventional biology enzyme and moved back and boil the technology cotton seed hulls and handle a sordid difficult problem, Technological adaptability is strong, and effects of energy saving and emission reduction is obvious.
(2) the present invention adopts and is different from conventional alkali destarch/concise pre-treatment process, does scouring agent without high concentration highly basic, destarch rate height, pre-treatment pH value of waste water 7-8, colourity is low, and the COD value is moved back than traditional alkali and is boiled pre-treatment process reduction by 30%, water saving 10-30% saves steam and electricity 20%.
(3) the fabric quality height of gained of the present invention, the colourity of waste water is low, and the pH value meets discharging standards, and COD value and energy consumption significantly reduce, and have alleviated the load of wastewater treatment, have solved the bottleneck in the textile industry energy-saving and emission-reduction work.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Grey cloth description: pure cotton woven fabric, mass area ratio 300g/m
2
Biological complex enzyme preparation HD-100:5g/L, biology enzyme synergist HD-101:1g/L, JFC:1g/L, pH value about 7.
The desizing flow process:
Advance cloth (the back grey cloth of singing)---room temperature is padded destarch working solution (pick-up rate 100%)---60 ℃ of insulations 1 hour.
Bleaching prescription: H
2O
2(100%): 15g/L, hydrogen peroxide controlled decomposition auxiliary agent HD-181:10g/L, JFC:1g/L, adjusting pH value 11.
The decatize technological process:
---two lattice flat wash troughs pad normal temperature cold water (pick-up rate 60%)---pads oxygen and floats working solution (room temperature, pick-up rate 100%)---steam box 98-102 ℃ of processing 70min---85 ℃ of washings of two lattice flat wash troughs---60 ℃ of washings of flat wash trough---flat wash trough normal temperature washing---oven dry---cropping to advance cloth (after the destarch).
Through the COTTON FABRIC of above-mentioned processing through the broadwise capillary effect all greater than 9cm, the destarch rate is more than 90%, whiteness is 83, the cloth cover cleaning, cotton seed hulls is removed fully, ultimate strength and tearing brute force retention rate be more than 90%, even dyeing.
Embodiment 2
Grey cloth description: pure cotton woven fabric, mass area ratio 200g/m
2
(wherein the mass percent of amylase, pectase, cellulase, paper pulp enzyme, at, protease and lipase is the biological complex enzyme preparation: 27-32%: 12-17%: 10-16%: 15-19%: 9-12%: 8-13%: 6-9%) 6g/L, biology enzyme synergist (mass percent is sorbierite, the calcium chloride of 13-22%: 32-44%: 41-52%, the compound of calcium lactate) 1.5g/L, JFC 1g/L, pH value about 7.
The desizing flow process:
Advance cloth (the back grey cloth of singing)---room temperature is padded destarch working solution (100%)---60 ℃ of insulations 1 hour.
Bleaching prescription: H
2O
2(100%) 13g/L, hydrogen peroxide controlled decomposition auxiliary agent (mass percent 10-18%: 20-24%: 13-18%: 11-17%: 15-21%: 17-22%: nano hydrated silica, polyphosphonates, sodium phosphate trimer, calgon, sodium pyrophosphate, the compound of polyethylene polyamine polyalkylene phosphonate) 13g/L, JFC 2g/L, regulate pH value 11.
The decatize technological process:
---two lattice flat wash troughs pad normal temperature cold water (pick-up rate 60%)---pads oxygen and floats working solution (room temperature, pick-up rate 100%)---steam box 98-102 ℃ of processing 70min---85 ℃ of washings of two lattice flat wash troughs---60 ℃ of washings of flat wash trough---flat wash trough normal temperature washing---oven dry---cropping to advance cloth (after the destarch).
Through the COTTON FABRIC of above-mentioned processing through the broadwise capillary effect all greater than 8cm, the destarch rate is more than 90%, whiteness is 82, the cloth cover cleaning, cotton seed hulls is removed fully, ultimate strength and tearing brute force retention rate be more than 90%, even dyeing.
Embodiment 3
Grey cloth description: the woven cloth of polyester-cotton blend (T65/C35), mass area ratio 200g/m
2
(wherein the mass percent of amylase, pectase, cellulase, paper pulp enzyme, at, protease and lipase is the biological complex enzyme preparation: 27-32%: 12-17%: 10-16%: 15-19%: 9-12%: 8-13%: 6-9%) 3g/L, biology enzyme synergist (mass percent is sorbierite, the calcium chloride of 13-22%: 32-44%: 41-52%, the compound of calcium lactate) 2g/L, JFC 1g/L, pH value about 7.
The desizing flow process:
Advance cloth (the back grey cloth of singing)---room temperature is padded destarch working solution (100%)---60 ℃ of insulations 1 hour.
Bleaching prescription: H
2O
2(100%) 9g/L, hydrogen peroxide controlled decomposition auxiliary agent (compound of the ethylenediamine tetramethylene phosphonic acid of mass percent 12-19%: 13-17%: 11-18%: 12-16%: 15-23%: 18-25%, diethyl pentetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine pentamethylene phosphonic acids, maleic acid, phytic acid) 9g/L, JFC 2g/L, adjusting pH value 11.
The decatize technological process:
---two lattice flat wash troughs pad normal temperature cold water (pick-up rate 60%)---pads oxygen and floats working solution (room temperature, pick-up rate 100%)---steam box 98-102 ℃ of decatize case processing 70min---85 ℃ of washings of two lattice flat wash troughs---60 ℃ of washings of flat wash trough---flat wash trough normal temperature washing---oven dry---cropping to advance cloth (after the destarch).
Through the polyester-cotton fabric of above-mentioned processing through the broadwise capillary effect all greater than 8cm, the destarch rate is more than 90%, whiteness is 80, the cloth cover cleaning, cotton seed hulls is removed fully, ultimate strength and tearing brute force retention rate be more than 95%, even dyeing.
Claims (11)
1. the living things catalysis of a cotton and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, comprising:
(1) biological complex enzyme preparation, biology enzyme synergist and non-ionic surface active agent preparation are obtained the enzyme working solution, handling and bathing pH is 6-7.5; Fabric is padded described enzyme working solution at 20-45 ℃, and the fabric pick-up rate is 90-110%; The fabric that will pad the enzyme working solution is at 20-80 ℃ of insulation 0.5-16h;
(2) fabric after step (1) is handled pads the hydrogen peroxide bleaching liquid that contains hydrogen peroxide controlled decomposition auxiliary agent afterwards through cold water washing, and pick-up rate 90-110% handled 35-90 minute at 98-102 ℃ with the decatize case afterwards, washing, and oven dry is promptly.
2. a kind of cotton according to claim 1 and the catalysis of cotton type biological fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the concentration of the biological complex enzyme preparation in the described step (1) is 2-6g/L, the concentration of biology enzyme synergist is 0.5-2g/L, and the concentration of non-ionic surface active agent is 1-4g/L.
3. the living things catalysis of a kind of cotton according to claim 1 and 2 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the biological complex enzyme preparation in the described step (1) is the compound of amylase, pectase, cellulase, paper pulp enzyme, at, protease and lipase.
4. the living things catalysis of a kind of cotton according to claim 3 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the biological complex enzyme preparation in the described step (1) is the compound of amylase, pectase, cellulase, paper pulp enzyme, at, protease and the lipase of mass percent 27-32%: 12-17%: 10-16%: 15-19%: 9-12%: 8-13%: 6-9%.
5. the living things catalysis of a kind of cotton according to claim 1 and 2 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the biology enzyme synergist in the described step (1) is the compound of sorbierite, calcium chloride, calcium lactate.
6. a kind of cotton according to claim 5 and the catalysis of cotton type biological fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the biology enzyme synergist in the described step (1) is sorbierite, the calcium chloride of mass percent 13-22%: 32-44%: 41-52%, the compound of calcium lactate.
7. the living things catalysis of a kind of cotton according to claim 1 and 2 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the non-ionic surface active agent in the described step (1) is polyethylene glycols or polyethenoxy ether class, is specially a kind of in fatty alcohol-polyoxyethylene ether, polyoxyethylene sorbitan fatty acid ester, the Nonidet P40.
8. the living things catalysis of a kind of cotton according to claim 1 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the hydrogen peroxide bleaching liquid that contains hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) consists of: 100% hydrogen peroxide 5-20g/L, hydrogen peroxide controlled decomposition auxiliary agent 5-20g/L, bleeding agent 1-4g/L, pH value 10.5-11.
9. according to the living things catalysis and the collaborative pre-treating method of controlled oxidation of claim 1 or 8 described a kind of cottons and cotton type fabric, it is characterized in that: the hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) is several compounds in nano hydrated silica, polyphosphonates, sodium phosphate trimer, calgon, sodium pyrophosphate, ethylenediamine tetramethylene phosphonic acid, diethyl pentetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine pentamethylene phosphonic acids, maleic acid, phytic acid, the polyethylene polyamine polyalkylene phosphonate; Bleeding agent is polyethylene glycols or polyethenoxy ether class, is specially a kind of in fatty alcohol-polyoxyethylene ether, polyoxyethylene sorbitan fatty acid ester, the Nonidet P40.
10. the living things catalysis of a kind of cotton according to claim 9 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the hydrogen peroxide controlled decomposition auxiliary agent in the described step (2) is mass percent 10-18%: 20-24%: 13-18%: 11-17%: 15-21%: 17-22%: nano hydrated silica, polyphosphonates, sodium phosphate trimer, calgon, sodium pyrophosphate, the compound of polyethylene polyamine polyalkylene phosphonate; Or be mass percent 12-19%: 13-17%: 11-18%: 12-16%: 15-23%: 18-25%: ethylenediamine tetramethylene phosphonic acid, diethyl pentetic acid, ethylenediamine tetra-acetic acid, diethylenetriamine pentamethylene phosphonic acids, maleic acid, the compound of phytic acid.
11. the living things catalysis of a kind of cotton according to claim 1 and cotton type fabric and controlled oxidation are worked in coordination with pre-treating method, it is characterized in that: the washing in the described step (2) is the washings of four lattice, and promptly 85 ℃ of washing 2 lattice are washed 1 lattice for 60 ℃, and normal temperature is washed 1 lattice.
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