A New Bleaching Method for Straw

Abstract

The invention provides a new method for bleaching straw weaving, which belongs to the technical field of straw weaving bleaching and dyeing, and comprises the following steps: S1, activation pretreatment: adding straw weaving to a reactor, then adding an aqueous solution of surfactant I, and adjusting the pH of the solution to 4.5- 5.5, soaking activation pretreatment after heating up; S2, soaking and cleaning with water; S3, bleaching treatment: soak the straw weaving in the bleach solution, adjust the pH of the solution to 10-12, and perform a bleaching treatment after heating up; adjust the pH of the solution to 9 with inorganic alkali ~10, carry out secondary bleaching treatment; wherein, the bleaching agent solution is prepared from a composite hydrogen peroxide stabilizer, surfactant II, water and hydrogen peroxide; S4, add water to soak and wash several times until the hydrogen peroxide is detected to be qualified, take out The straw is dried to obtain the bleached straw. The method reduces the sewage treatment cost, is convenient to operate and easy to control, and is suitable for industrial production.

Description

technical field

[0001] The invention belongs to the technical field of straw weaving bleaching and dyeing, and in particular relates to a new bleaching treatment method for straw weaving. Background technique

[0002] Straw weaving is a traditional folk handicraft, which is made of various flexible herbs (such as wheat straw, cattail grass, corn husk, reed grass, yellow grass, sage grass, mat grass, golden silk grass, asparagus grass, rush grass , Kuai grass, recommended grass, bamboo shell, Ruo shell, straw, rough, etc.) are handicrafts made from raw materials.

[0003] In order to increase the added value of straw weaving crafts, it is particularly important to bleach and dye straw weaving. Because the traditional bleaching and dyeing process of straw mainly uses chemicals containing phosphorus and sulfur, the bleaching and dyeing process is cumbersome, time-consuming, labor-intensive, and water consumption is high; the total phosphorus content in the production sewage is...

Examples

Embodiment 1

[0033] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0034] S1, activation pretreatment

[0035] Weigh 12.1g of wheat straw and put it into the reactor, add 300g of water and 0.12g of OP-10 to the reactor in turn, then adjust the pH of the solution to 5.0 with sulfuric acid, raise the temperature to 55°C, soak and activate for 60min, pretreatment Discharge solution I after finishing, at this moment, the pH of solution I is 7.1;

[0036] S2, cleaning

[0037] Add water to the reactor to cover the braided wheat straw, soak and wash for 20 minutes, then drain the water, that is, discharge solution II;

[0038] S3, bleaching treatment

[0039] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material weight ratio is: EDTA: sodium metasilica...

Embodiment 2

[0044] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0045] S1, activation pretreatment

[0046] Weigh 12.7g of wheat straw and put it into the reactor, add 300g of the solution III of Example 1 and 0.2g of OP-10 to the reactor in sequence, then adjust the pH of the solution to 4.5 with sulfuric acid, raise the temperature to 60°C, soak and activate the pre- Treat for 30min, discharge solution I after the pretreatment ends, at this moment, the pH of solution I is 6.0;

[0047] S2, cleaning

[0048] Add water to the reactor to cover the braided wheat straw, soak and wash for 10 minutes, then drain the water, that is, discharge solution II;

[0049]S3, bleaching treatment

[0050] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material ...

Embodiment 3

[0055] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0056] S1, activation pretreatment

[0057] Weigh 19.1kg of wheat straw and put it into the reactor, add 120kg of water and 20g of OP-10 into the reactor in turn, then adjust the pH of the solution to 4.6 with sulfuric acid, raise the temperature to 60°C, soak and activate the pretreatment for 120min, and the pretreatment is over After discharge solution I, at this moment, the pH of solution I is 7;

[0058] S2, cleaning

[0059] Add water to the reactor to cover the braided wheat straw, soak and wash for 30 minutes, then drain the water, that is, discharge solution II;

[0060] S3, bleaching treatment

[0061] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material weight ratio is:...

technical field

[0001] The invention belongs to the technical field of straw weaving bleaching and dyeing, and in particular relates to a new bleaching treatment method for straw weaving. Background technique

[0002] Straw weaving is a traditional folk handicraft, which is made of various flexible herbs (such as wheat straw, cattail grass, corn husk, reed grass, yellow grass, sage grass, mat grass, golden silk grass, asparagus grass, rush grass , Kuai grass, recommended grass, bamboo shell, Ruo shell, straw, rough, etc.) are handicrafts made from raw materials.

[0003] In order to increase the added value of straw weaving crafts, it is particularly important to bleach and dye straw weaving. Because the traditional bleaching and dyeing process of straw mainly uses chemicals containing phosphorus and sulfur, the bleaching and dyeing process is cumbersome, time-consuming, labor-intensive, and water consumption is high; the total phosphorus content in the production sewage is...

Examples

Embodiment 1

[0033] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0034] S1, activation pretreatment

[0035] Weigh 12.1g of wheat straw and put it into the reactor, add 300g of water and 0.12g of OP-10 to the reactor in turn, then adjust the pH of the solution to 5.0 with sulfuric acid, raise the temperature to 55°C, soak and activate for 60min, pretreatment Discharge solution I after finishing, at this moment, the pH of solution I is 7.1;

[0036] S2, cleaning

[0037] Add water to the reactor to cover the braided wheat straw, soak and wash for 20 minutes, then drain the water, that is, discharge solution II;

[0038] S3, bleaching treatment

[0039] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material weight ratio is: EDTA: sodium metasilica...

Embodiment 2

[0044] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0045] S1, activation pretreatment

[0046] Weigh 12.7g of wheat straw and put it into the reactor, add 300g of the solution III of Example 1 and 0.2g of OP-10 to the reactor in sequence, then adjust the pH of the solution to 4.5 with sulfuric acid, raise the temperature to 60°C, soak and activate the pre- Treat for 30min, discharge solution I after the pretreatment ends, at this moment, the pH of solution I is 6.0;

[0047] S2, cleaning

[0048] Add water to the reactor to cover the braided wheat straw, soak and wash for 10 minutes, then drain the water, that is, discharge solution II;

[0049]S3, bleaching treatment

[0050] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material ...

Embodiment 3

[0055] Embodiments of the present invention provide a new method for bleaching straw, comprising the following steps:

[0056] S1, activation pretreatment

[0057] Weigh 19.1kg of wheat straw and put it into the reactor, add 120kg of water and 20g of OP-10 into the reactor in turn, then adjust the pH of the solution to 4.6 with sulfuric acid, raise the temperature to 60°C, soak and activate the pretreatment for 120min, and the pretreatment is over After discharge solution I, at this moment, the pH of solution I is 7;

[0058] S2, cleaning

[0059] Add water to the reactor to cover the braided wheat straw, soak and wash for 30 minutes, then drain the water, that is, discharge solution II;

[0060] S3, bleaching treatment

[0061] S3.1, the preparation of composite hydrogen peroxide stabilizer: EDTA, sodium metasilicate, magnesium sulfate three kinds of agents are mixed evenly to obtain composite hydrogen peroxide stabilizer, composite stabilizer raw material weight ratio is:...

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