阅读说明：本技术 一种无磷环保酶堆氧漂工艺 (non-phosphorus environment-friendly enzyme heap oxygen bleaching process ) 是由 赵先武 张清波 吴立慧 于 2019-10-12 设计创作，主要内容包括：本发明涉及织物氧漂工艺技术领域,具体涉及到一种无磷环保酶堆氧漂工艺。一种无磷环保酶堆氧漂工艺,步骤包括：(1)酶堆：将织物烧毛后干进布,用酶处理液二浸二轧,然后室温堆置；(2)氧漂：将上步处理过的织物采用漂白液在饱和蒸汽中进行漂白处理60-90min；(3)烘干：最后将氧漂后的织物进行高温水洗烘干。本发明采用生物酶代替烧碱进行棉织物退浆煮练的工艺,使得处理后的织物上无残留浆料、无残留棉籽壳,白度达到碱处理的水平,且毛效较高。另外本发明的工艺对纤维损伤小,处理织物的品质高,手感柔软；此外,本发明的工艺生产效率高、劳动强度低,节能、节水,对环境友好。(The invention relates to the technical field of fabric oxygen bleaching processes, in particular to a phosphorus-free environment-friendly enzyme heap oxygen bleaching process. A phosphorus-free environment-friendly enzyme heap oxygen bleaching process comprises the following steps: (1) enzyme stacking: singeing the fabric, then dry-feeding the fabric, soaking and rolling the fabric by using an enzyme treatment solution II, and then piling the fabric at room temperature; (2) oxygen bleaching: bleaching the treated fabric in saturated steam for 60-90min with bleaching liquid; (3) drying: and finally, washing and drying the fabric subjected to the oxygen bleaching at high temperature. The invention adopts the process of desizing and scouring the cotton fabric by using the biological enzyme to replace caustic soda, so that the treated fabric has no residual slurry and residual cottonseed hulls, the whiteness reaches the level of alkali treatment, and the capillary effect is higher. In addition, the process has small damage to the fiber, high quality of the treated fabric and soft hand feeling; in addition, the process has the advantages of high production efficiency, low labor intensity, energy and water conservation and environmental friendliness.)

1. A phosphorus-free environment-friendly enzyme heap oxygen bleaching process is characterized by comprising the following steps:

(1) Enzyme stacking: singeing the fabric, then dry-feeding the fabric, soaking and rolling the fabric by using an enzyme treatment solution II, and then piling the fabric at room temperature;

(2) Oxygen bleaching: bleaching the treated fabric in saturated steam for 60-90min with bleaching liquid;

(3) Drying: and finally, washing and drying the fabric subjected to the oxygen bleaching at high temperature.

2. The phosphorus-free environment-friendly enzyme heap oxygen bleaching process as claimed in claim 1, wherein the cloth feeding speed in the step (1) is 120-140m/min, and the rolling residue rate after the two-dipping and the two-rolling is more than 90%.

3. The phosphorus-free environment-friendly enzyme heap oxygen bleaching process according to claim 1, wherein the temperature of the enzyme treatment solution during padding in the step (1) is 55-63 ℃, and the room-temperature heap standing time is 18-24 h.

4. the phosphorus-free environment-friendly enzyme heap oxygen bleaching process according to claim 1, wherein the padding mode in the bleaching in the step (2) is two-dipping and two-rolling, and the rolling residue rate is 70-80%.

5. The phosphorus-free environment-friendly enzyme heap oxygen bleaching process according to any one of claims 1-4, wherein the enzyme treatment solution in step (1) comprises: 0.5-3g/L of biological enzyme and 2-6g/L of penetrating agent.

6. The phosphorus-free environmentally friendly enzyme heap oxygen bleaching process of any one of claims 1-4, wherein the bleaching liquor in step (2) comprises: 2-8g/L of refining penetrant, 2-6g/L of main stabilizer, 1-4g/L of secondary stabilizer, 1-4g/L of chelating dispersant, 0.5-3g/L of sodium hydroxide and 7-16g/L of hydrogen peroxide.

7. The phosphorus-free environment-friendly enzyme heap oxygen bleaching process according to claim 6, wherein the main stabilizer comprises 40-60 parts by weight of rare earth minerals, 1-8 parts by weight of inorganic base and 50-70 parts by weight of water.

8. The phosphorus-free environment-friendly enzyme heap oxygen bleaching process according to claim 6, wherein the secondary stabilizer comprises 20-35 parts by weight of organic acid salt, 5-15 parts by weight of inorganic acid salt and 50-70 parts by weight of water.

9. Use of the phosphorus-free environmentally friendly enzyme heap oxygen bleaching process according to any one of claims 1-8 in fabric pretreatment.

10. A fabric made by the phosphorus-free environmentally friendly enzyme heap oxygen bleaching process of any one of claims 1-8.

Technical Field

The invention belongs to the technical field of fabric oxygen bleaching processes, and particularly relates to a phosphorus-free environment-friendly enzyme heap oxygen bleaching process.

Background

Under the increasing environmental protection pressure, printing and dyeing enterprises and printing and dyeing auxiliary agent suppliers actively seek production processes and matched products with low energy consumption, more environmental protection and high cost performance, the pretreatment processes of all-cotton and blended woven fabrics thereof generally adopt alkali boiling-oxygen bleaching processes, desizing-alkali boiling-oxygen bleaching processes and alkali oxygen heap-oxygen bleaching processes, most of the processes consume a lot of steam and high alkali consumption, so that the PH value, COD and BOD in wastewater are very high, flocculate impurities in the wastewater are also many, the processes are not beneficial to sewage purification treatment, the dyeing auxiliary agents used in factories mostly contain phosphorus, the environment is greatly damaged, and the biological enzyme chemical process is more and more widely applied.

At present, research on biological enzymes has proved that it is feasible to remove cellulose commensals by using lipase, pectinase, protease, cellulase and hemicellulase, i.e. low-temperature scouring can be realized by selecting proper biological enzymes. However, in the low-temperature bleaching, the oxidation capacity of hydrogen peroxide is very low under the low-temperature condition, the effect of bleaching the fabric cannot be achieved, the bleaching can be achieved only by the cooperation with a low-temperature hydrogen peroxide activator, the mature process is used for achieving low-temperature scouring and bleaching at 80 ℃, and the hand feeling, whiteness and capillary effect of the fabric after processing treatment of the existing ultralow-temperature scouring and bleaching process at 65 ℃ cannot meet the requirements.

Disclosure of Invention

In order to solve the above problems, the first aspect of the present invention provides a phosphorus-free environment-friendly enzyme heap oxygen bleaching process, comprising the steps of:

(1) enzyme stacking: singeing the fabric, then dry-feeding the fabric, soaking and rolling the fabric by using an enzyme treatment solution II, and then piling the fabric at room temperature;

(2) Oxygen bleaching: bleaching the treated fabric in saturated steam for 60-90min with bleaching liquid;

(3) Drying: and finally, washing and drying the fabric subjected to the oxygen bleaching at high temperature.

As a preferable technical scheme, the cloth feeding speed in the step (1) is 120-140m/min, and the rolling allowance rate after the two-dipping and two-rolling is more than 90%.

As a preferable technical scheme, the temperature of the enzyme treatment liquid during padding in the step (1) is 55-63 ℃, and the stacking time at room temperature is 18-24 h.

As a preferable technical scheme, the padding mode in the bleaching in the step (2) is two-padding and two-rolling, and the rolling residual rate is 70-80%.

As a preferable technical scheme, the enzyme treatment solution in the step (1) comprises: 0.5-3g/L of biological enzyme and 2-6g/L of penetrating agent.

As a preferred technical solution, the bleaching solution in step (2) comprises: 2-8g/L of refining penetrant, 2-6g/L of main stabilizer, 1-4g/L of secondary stabilizer, 1-4g/L of chelating dispersant, 0.5-3g/L of sodium hydroxide and 7-16g/L of hydrogen peroxide.

As a preferable technical scheme, the main stabilizer comprises 40-60 parts by weight of rare earth mineral substance, 1-8 parts by weight of inorganic base and 50-70 parts by weight of water.

As a preferable technical scheme, the secondary stabilizer comprises, by weight, 20-35 parts of organic acid salt, 5-15 parts of inorganic acid salt and 50-70 parts of water.

The second aspect of the invention provides the application of the phosphorus-free environment-friendly enzyme heap oxygen bleaching process in the pretreatment of the fabric.

In a third aspect, the invention provides a fabric prepared by the phosphorus-free environment-friendly enzyme heap oxygen bleaching process.

Has the advantages that: the invention adopts the process of desizing and scouring the cotton fabric by using the biological enzyme to replace caustic soda, so that the treated fabric has no residual slurry and residual cottonseed hulls, the whiteness reaches the level of alkali treatment, and the capillary effect is higher. In addition, the process has small damage to the fiber, high quality of the treated fabric and soft hand feeling; in addition, the process has the advantages of high production efficiency, low labor intensity, energy and water conservation and environmental friendliness.

Detailed Description

The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.

The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.

in order to solve the above problems, the first aspect of the present invention provides a phosphorus-free environment-friendly enzyme heap oxygen bleaching process, comprising the steps of:

(1) Enzyme stacking: singeing the fabric, then dry-feeding the fabric, soaking and rolling the fabric by using an enzyme treatment solution II, and then piling the fabric at room temperature;

(2) Oxygen bleaching: bleaching the treated fabric in saturated steam for 60-90min with bleaching liquid;

(3) drying: and finally, washing and drying the fabric subjected to the oxygen bleaching at high temperature.

Preferably, the cloth feeding speed in the step (1) is 120-140m/min, and the rolling residual rate after the second soaking and the second rolling is more than 90%.

The percent reduction, also referred to herein as the liquid pick-up, is the weight of liquid carried on the fabric as a percentage of the fabric's own weight; the accurate expression is that the weight of the solution on the cloth cover after the solution is fed through the size box and rolled by the rolling rod is the percentage of the original weight of the fabric before padding. The two-dipping and two-rolling refers to that the fabric is rolled by a roller after being dipped in the dye solution and is repeated twice.

Preferably, the temperature of the enzyme treatment solution during padding in the step (1) is 55-63 ℃, and the stacking time at room temperature is 18-24 h.

Preferably, the padding mode in the bleaching in the step (2) is two-padding and two-rolling, and the rolling residual rate is 70-80%.

Preferably, the enzyme treatment solution in step (1) comprises: 0.5-3g/L of biological enzyme and 2-6g/L of penetrating agent.

Biological enzymes

Preferably, the biological enzyme is selected from one or more of amylase, pectinase, neutral cellulase and protease.

More preferably, the biological enzyme is a low temperature amylase.

Penetrant

Preferably, the osmotic agent is one or more of sodium dodecyl benzene sulfonate, nonylphenol polyoxyethylene ether, sodium dodecyl sulfate and sorbitol.

More preferably, the osmotic agent is sorbitol.

The penetrant is compatible with enzyme, has strong dispersibility, is beneficial to dispersedly stripping starch slurry removed by the enzyme and promoting the desizing effect, and has quick penetration emulsifying power, helps enzyme treatment to be more thorough, removes certain grease of the gray cloth, and is cooperated with the enzyme to remove more complex slurry.

Preferably, the bleaching solution in the step (2) comprises: 2-8g/L of refining penetrant, 2-6g/L of main stabilizer, 1-4g/L of secondary stabilizer, 1-4g/L of chelating dispersant, 0.5-3g/L of sodium hydroxide and 7-16g/L of hydrogen peroxide.

Refining penetrant

Preferably, the refining penetrant comprises, by weight, 60-75 parts of a surfactant, 0.2-0.8 part of a defoaming agent, and 30-42 parts of deionized water.

Preferably, the surfactant includes an anionic surfactant and a nonionic surfactant.

more preferably, the anionic surfactant is sodium fatty alcohol polyoxyethylene ether sulfate.

More preferably, the nonionic surfactant comprises isomeric tridecanol polyoxyethylene ether and fatty alcohol polyoxyethylene (9) ether.

Still further preferably, the surfactant comprises fatty alcohol polyoxyethylene (9) ether, isomeric tridecanol polyoxyethylene ether and fatty alcohol polyoxyethylene ether sodium sulfate.

More preferably, the surfactant is prepared by compounding fatty alcohol polyoxyethylene (9) ether, isomeric tridecanol polyoxyethylene ether and fatty alcohol polyoxyethylene ether sodium sulfate according to the weight ratio of 28:25: 12.

Preferably, the defoaming agent is selected from one or more of alkyl phosphate defoaming agent, polyether defoaming agent and organic silicon defoaming agent.

More preferably, the defoamer comprises a silicone defoamer.

Still further preferably, the defoamer further comprises distearylethylenediamine or dipalmitoylethylenediamine.

More preferably, the defoaming agent is compounded by polydimethylsiloxane and dipalmitoyl ethylenediamine (or dipalmitoyl ethylenediamine) according to the weight ratio of (3-7) to 2.

The inventor finds that in the oxygen bleaching process, the system can effectively improve whiteness and capillary effect by adopting the refining penetrant and adopting special defoaming agents including an organic silicon defoaming agent and a palmitamide defoaming agent; the inventor believes that peracetic acid is generated probably due to the reaction of the palmitoyl amide defoaming agent and hydrogen peroxide in a system, so that the peracetic acid anion bleaching factor is obtained, the bleaching performance of the peracetic acid anion bleaching factor is better than that of hydrogen peroxide, the bleaching temperature is further reduced, the desizing rate and the whiteness are improved, and holes are avoided.

Primary stabilizer

Preferably, the main stabilizer comprises 40-60 parts of rare earth mineral, 1-8 parts of inorganic base and 50-70 parts of water by weight.

Preferably, the rare earth mineral is selected from one or more of bastnaesite, monazite, strontium cerite sulfate and xenotime.

More preferably, the rare earth mineral is xenotime.

the inorganic base is not limited, and may be any inorganic base in the art, including, but not limited to, sodium hydroxide, potassium hydroxide, sodium carbonate; sodium hydroxide is preferred.

secondary stabilizer

Preferably, the secondary stabilizer comprises, by weight, 20-35 parts of an organic acid salt, 5-15 parts of an inorganic acid salt and 50-70 parts of water.

The organic acid salt is a metal salt compound of an organic acid, wherein the organic acid is selected from one or more of oxalic acid, tartaric acid, malic acid, citric acid, glycolic acid and gluconic acid.

Preferably, the organic acid salt includes sodium gluconate.

Further preferably, the organic acid salt is sodium gluconate.

preferably, the inorganic acid salt is selected from one or more of hydrochloride, hydrobromide, hydroiodide, nitrate, bicarbonate and carbonate, sulfate, phosphate.

More preferably, the inorganic acid salt is a metal magnesium salt, and the metal magnesium salt is not limited, and may be a metal magnesium salt of any inorganic acid conventionally used in the art.

The inventor adopts a main stabilizer and a secondary stabilizer to mutually cooperate to improve the stability of hydrogen peroxide, and mainly adopts sodium gluconate to chelate metal ions, but the chelation effect of the sodium gluconate is easily reduced due to the oxidation of the sodium gluconate, and the inventor further adopts the secondary stabilizer to find that the capillary effect, the whiteness and the fabric hand feeling of the system are improved to some extent; and secondly, the chelating dispersant is adopted to treat metal ions on water quality and fabrics, so that excessive catalysis of hydrogen peroxide under an alkaline condition is further prevented, and the oxygen bleaching effect is improved.

Chelating dispersants

preferably, the chelating dispersant comprises 30-44 parts of organic acid, 2-6 parts of inorganic salt and 52-75 parts of deionized water by weight.

Preferably, the organic acid comprises a polycarboxylic acid.

more preferably, the polycarboxylic acid is selected from one or more of polymaleic acid, citric acid, lactic acid, hydroxyethylethylenediaminetriacetic acid, hydroxyethyliminodiacetic acid, dihydroxyethylglycine, gluconic acid, phytic acid, tartaric acid.

Still more preferably, the organic acid comprises gluconic acid, polymaleic acid.

More preferably, the organic acid is gluconic acid and polymaleic acid which are compounded according to the weight ratio of 4: 3.

Preferably, the inorganic salt is selected from one or more of soluble salts of potassium, sodium, calcium, barium and magnesium.

More preferably, the inorganic salt is a soluble salt of magnesium, and the soluble salt of magnesium is selected from one or more of magnesium chloride, magnesium sulfate and magnesium nitrate.

The sodium hydroxide in the bleaching solution is NaOH (100 percent), which refers to the mass of pure NaOH contained in the added NaOH, the hydrogen peroxide in the bleaching solution is H ₂ O ₂ (100 percent), which refers to the mass of pure H ₂ O ₂ contained in the added hydrogen peroxide, and the adding amount is calculated according to the mass of pure substances needed in the bleaching solution.

In a second aspect, the invention provides the use of a phosphorus-free environment-friendly enzyme heap oxygen bleaching process as described above in fabric soaping.

In a second aspect, the invention provides a fabric prepared by the phosphorus-free environment-friendly enzyme heap oxygen bleaching process.

The present invention will now be described in detail by way of examples, and the starting materials used are commercially available unless otherwise specified.