阅读说明：本技术 一种新型节能节水人造棉染色工艺 (Novel energy-saving and water-saving artificial cotton dyeing process ) 是由 孙建江 张俊强 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种新型节能节水人造棉染色工艺,涉及染整工艺,旨在解决碱剂在染料之后加入,染前需做前处理,浪费较多的水、电、汽成本,造成能源的浪费,其技术方案要点是：包括如下步骤：S1进布,将坯布投入染色机内,S2配制碱剂,将电解质和纯碱混合均匀后,直接加入染机内,运行20分钟,S3染料混料,选用均三嗪衍生物或乙烯砜型结构的染料,运行20分钟；S4升温固色,以1-2℃/min的速率对染色机内的溶液升温至60℃,保温50-60分钟进行固色,洗净后过软出缸。本发明坯布在过酸后直接加入皂洗剂进行皂洗,节省了排水注水的时间,并且使酸洗后的溶液进行重复使用,节约了水资源。(The invention discloses a novel energy-saving and water-saving artificial cotton dyeing process, which relates to a dyeing and finishing process and aims to solve the problems that an alkaline agent is added after a dye, pretreatment is needed before dyeing, more water, electricity and steam costs are wasted, and energy is wasted, and the technical scheme has the key points that: the method comprises the following steps: s1, feeding cloth, putting gray cloth into a dyeing machine, S2 preparing an alkaline agent, mixing electrolyte and soda ash uniformly, directly adding the mixture into the dyeing machine, running for 20 minutes, mixing S3 dye, selecting a dye with an S-triazine derivative or vinyl sulfone structure, and running for 20 minutes; s4, heating and fixing color, heating the solution in the dyeing machine to 60 ℃ at the speed of 1-2 ℃/min, preserving heat for 50-60 minutes for fixing color, cleaning, softening and taking out of the tank. According to the invention, the soaping agent is directly added to the grey cloth after the grey cloth is peracid to carry out soaping, so that the time for draining water and injecting water is saved, and the solution after acid washing is reused, so that the water resource is saved.)

1. A novel energy-saving and water-saving artificial cotton dyeing process is characterized in that: the method comprises the following steps:

s1, feeding cloth, and putting the grey cloth into a dyeing machine;

s2, preparing an alkaline agent, mixing the electrolyte and the soda ash uniformly, directly adding into a dyeing machine, and running for 20 minutes;

s3 dye mixing, selecting a dye with an S-triazine derivative or vinyl sulfone structure, and running for 20 minutes;

s4, heating and fixing color, heating the solution in the dyeing machine to 60 ℃ at the speed of 1-2 ℃/min, and keeping the temperature for 50-60 minutes to fix color;

s5, cleaning, discharging the solution in the dyeing machine after heat preservation, and adding a jar of clear water for washing;

s6, soaping with peracid, adding a soaping agent after 10 minutes of peracid without draining, heating to 85 ℃, and soaping for 15 minutes;

s7 taking out of the vat, cooling to 60 ℃ at the speed of 2 ℃/min after soaping, washing and then softening and taking out of the vat.

2. The novel energy-saving and water-saving artificial cotton dyeing process according to claim 1, characterized in that: the electrolyte in the step S2 is anhydrous sodium sulphate, and the step S2 further includes mixing the anhydrous sodium sulphate solution dissolved according to the proportion and soda ash to obtain a mixed solution, and pouring the mixed solution into a dyeing machine.

3. The novel energy-saving and water-saving artificial cotton dyeing process according to claim 2, characterized in that: the bath ratio of the grey cloth to the mixed liquid in the step S2 is 1: 5.

4. The novel energy-saving and water-saving artificial cotton dyeing process according to claim 1, characterized in that: the s-triazine derivative is monochlorotriazine or dichloros-triazine, and the dye with the vinyl sulfone structure is one or more of single reaction group vinyl sulfone treated by desulfonate, double reaction group vinyl sulfone and mixed reaction group reactive dye containing a vinyl sulfone structure.

5. The novel energy-saving and water-saving artificial cotton dyeing process according to claim 1, characterized in that: the step S6 of peracid soaping includes:

s61, adding acetic acid, and running for 10 minutes at room temperature;

and S62, adding soap lotion, wherein the content of the soap lotion is 1g/L and 0.5g/L respectively according to the shade of the dyeing color.

Technical Field

The invention relates to a dyeing and finishing process, in particular to a novel energy-saving and water-saving artificial cotton dyeing process.

Background

Since the advent of reactive dyes, the more-applied dyeing process for dyeing artificial cellulose fibers with reactive dyes has been dominated by a one-bath two-step process, i.e., the dyes are firstly dyed in a neutral bath (accelerated by electrolyte sodium sulfate or sodium chloride), and then alkaline agents (soda, caustic soda or baking soda) are added for fixation. The dyeing by the one-bath two-step method can ensure that the dye is fully transferred, the level dyeing property is good, the dye exhaustion rate is high, the color light is easy to control, but the process has longer operation time and consumes more time cost, and the alkaline agent is added after the dye, so that the pretreatment is needed before the dyeing, more water, electricity and steam costs are wasted, and the energy waste is caused.

Therefore, a new solution is needed to solve this problem.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a novel energy-saving and water-saving artificial cotton dyeing process, and simultaneously, an alkaline agent and electrolyte are added, the alkaline agent has an obvious oil removing effect, the artificial cotton dyeing and finishing processing time is shortened, the electric power cost and the time cost are reduced, the gray fabric is not required to be rinsed, and the water resource is saved and the water resource cost is reduced.

The technical purpose of the invention is realized by the following technical scheme: a novel energy-saving and water-saving artificial cotton dyeing process comprises the following steps:

s1, feeding cloth, and putting the grey cloth into a dyeing machine;

s2, preparing an alkaline agent, mixing the electrolyte and the soda ash uniformly, directly adding into a dyeing machine, and running for 20 minutes;

s3 dye mixing, selecting a dye with an S-triazine derivative or vinyl sulfone structure, and running for 20 minutes;

s4, heating and fixing color, heating the solution in the dyeing machine to 60 ℃ at the speed of 1-2 ℃/min, and keeping the temperature for 50-60 minutes to fix color;

s5, cleaning, discharging the solution in the dyeing machine after heat preservation, and adding a jar of clear water for washing;

s6, soaping with peracid, adding a soaping agent after 10 minutes of peracid without draining, heating to 85 ℃, and soaping for 15 minutes;

s7 taking out of the vat, cooling to 60 ℃ at the speed of 2 ℃/min after soaping, washing and then softening and taking out of the vat.

By adopting the technical scheme, the alkaline agent and the electrolyte are added simultaneously, the alkaline agent has obvious oil removal effect, the time of artificial cotton dyeing and finishing processing is shortened, the electric power cost and the time cost are reduced, the gray fabric does not need to be rinsed, the water resource is saved, the cost of the water resource is reduced, the electrolyte and the alkaline agent are added firstly, and then the dye is added, compared with a one-bath two-step method, the pretreatment process before dyeing is omitted, the dye with the s-triazine derivative structure or the vinyl sulfone structure is selected to match the dyeing and finishing process, the dyeing color fastness and the stability are good, the soaping agent is directly added into the gray fabric after peracid for soaping, the time of water drainage and water injection is saved, the solution after acid washing is reused, and the water resource is saved.

The invention is further configured to: the electrolyte in the step S2 is anhydrous sodium sulphate, and the step S2 further includes mixing the anhydrous sodium sulphate solution dissolved according to the proportion and soda ash to obtain a mixed solution, and pouring the mixed solution into a dyeing machine.

By adopting the technical scheme, the anhydrous sodium sulphate and the soda ash are respectively proportioned and weighed in powder form, the proportioning precision is improved, and the anhydrous sodium sulphate and the soda ash are uniformly mixed and then poured into a dyeing machine, so that the dye-uptake of subsequent dyes to grey cloth can be improved.

The invention is further configured to: the bath ratio of the grey cloth to the mixed liquid in the step S2 is 1: 5.

By adopting the technical scheme, the solution obtained by mixing the anhydrous sodium sulphate and the soda ash and the grey cloth are treated in a bath ratio of 1:5, so that the anhydrous sodium sulphate can effectively promote the dye to be dyed when the grey cloth is subjected to dip dyeing, the color fastness of the grey cloth is improved, the water consumption in the dyeing process is reduced, and the energy and water are saved.

The invention is further configured to: the s-triazine derivative is monochlorotriazine or dichloros-triazine, and the dye with the vinyl sulfone structure is one or more of single reaction group vinyl sulfone treated by desulfonate, double reaction group vinyl sulfone and mixed reaction group reactive dye containing a vinyl sulfone structure.

By adopting the technical scheme, the monochlorotriazine or dichloros-triazine has good reactive activity, and the dye has the characteristics of high cleanliness and high color fastness when used for dyeing and finishing the grey cloth.

The invention is further configured to: the step S6 of peracid soaping includes:

s61, adding acetic acid, and running for 10 minutes at room temperature;

and S62, adding soap lotion, wherein the content of the soap lotion is 1g/L and 0.5g/L respectively according to the shade of the dyeing color.

By adopting the technical scheme, acetic acid which is weak acid is selected for peracid, and soaping liquid with the concentration of 1g/L and 0.5g/L is respectively selected according to the shade of grey cloth dyeing, so that the color development effect of the dyed cloth is improved, the fastness is high, the color is bright, and the dyed cloth is washed to effectively remove residual impurities.

In conclusion, the invention has the following beneficial effects:

meanwhile, an alkaline agent and an electrolyte are added, the alkaline agent has an obvious oil removal effect, the artificial cotton dyeing and finishing processing time is shortened, the electric power cost and the time cost are reduced, the gray fabric does not need to be rinsed, the water resource is saved, the cost of the water resource is reduced, the electrolyte and the alkaline agent are added firstly, and then the dye is added.

Drawings

FIG. 1 is a block flow diagram of the present invention;

FIG. 2 is a block flow diagram of a conventional one-bath two-step process.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

A novel energy-saving and water-saving artificial cotton dyeing process is shown in figure 1 and comprises the following steps:

s1, feeding cloth, and putting the grey cloth into a dyeing machine;

s2 preparing alkaline agent, mixing electrolyte with soda ashAfter uniform mixing, directly adding into a dyeing machine, and running for 20 minutes, wherein the electrolyte is anhydrous sodium sulphate Na₂So₄Weighing powdered anhydrous sodium sulfate (Na)₂So₄) And soda ash (Na)₂Co₃) Mixing, dissolving at a certain ratio, and pouring into dyeing machine, specifically, gray fabric and sodium sulfate (Na)₂So₄) And soda ash (Na)₂Co₃) The bath ratio of the mixed solution is 1: 5.

And (3) mixing S3 dye materials, selecting a sym-triazine derivative or a vinyl sulfone type dye, and running for 20 minutes, wherein the sym-triazine derivative is monochlorotriazine or dichloros-triazine, and the vinyl sulfone type dye is one or more of single reaction group vinyl sulfone treated by desulfidation, double reaction group vinyl sulfone and mixed reaction group reactive dye containing a vinyl sulfone structure.

S4, heating and fixing color, heating the solution in the dyeing machine to 60 ℃ at the speed of 1-2 ℃/min, and keeping the temperature for 50-60 minutes to fix color;

s5, cleaning, discharging the solution in the dyeing machine after heat preservation, and adding a jar of clear water for washing;

s6, performing peracid soaping, adding a soaping agent after 10 minutes of peracid without draining, heating to 85 ℃, and then soaping for 15 minutes, wherein the peracid soaping comprises the following specific steps:

s61, adding acetic acid, and running for 10 minutes at room temperature;

s62, adding soap lotion, wherein the content of the soap lotion is 1g/L and 0.5g/L respectively according to the shade of the dyeing color;

s7 taking out of the vat, cooling to 60 ℃ at the speed of 2 ℃/min after soaping, washing and then softening and taking out of the vat.

Comparative example: selecting the gray fabric made of the artificial cotton material in the same batch as the embodiment to carry out active dyeing and finishing by a traditional one-bath two-step method, firstly carrying out pretreatment on the gray fabric made of the artificial cotton material, and the method comprises the following specific steps: deoiling (adding soda) -peracid, and after finishing pretreatment of the grey cloth, putting the grey cloth into a dyeing machine for dyeing operation, wherein the method comprises the following specific steps: adding electrolyte, carrying out operation for 20 minutes, adding a dye for dyeing, carrying out operation for 20 minutes, then adding soda ash for color fixation, then carrying out operation for 20 minutes, adding alkali twice, carrying out operation for 20 minutes, injecting clear water and an acid agent after drainage to carry out peracid treatment on the grey cloth, adding a soaping agent and clear water for soaping after draining, and finishing dyeing after draining and cleaning, wherein the grey cloth needs to be degreased in the pretreatment process, and the grey cloth needs to be operated at the temperature of 90 ℃ for 20 minutes.

The examples and comparative examples were conducted in trial and error using black dye dyeing tests, which were conducted with water and at the same time as follows:

the same parts of this embodiment as those of the conventional one-step two-bath method, such as the water washing after passing, discharging and soaping, are not contrasted here.

Note: the same portions of the two processes are not compared with water.

In the experiment, the dyed cloth is cleaned in a clean water overflow cleaning mode after soaping and before the dyed cloth is taken out of a cylinder, compared with the prior one-bath two-step method, the water consumption and the time consumption of dyeing are not obviously different, so the comparison of the process and the prior process in the aspects of water consumption and time consumption is neglected, and the experiment and summary show that the process of the embodiment omits the process of the pretreatment of the grey cloth, the time of the pretreatment of the grey cloth is saved, the consumption of steam and water quantity in the pretreatment of the grey cloth is reduced, the equipment is also saved in electricity consumption by shortening the running time of the equipment, the alkaline agent and the anhydrous sodium sulphate serving as electrolyte are simultaneously added into a dyeing machine for preparing the alkaline agent, the diffusivity of the active dye is improved by adding the electrolyte, the dyeing rate and the uniformity of the artificial cotton cloth are improved, and the acid soaping agent which is in acid state is directly added to the cloth without draining after the acid, the time of water drainage and water inflow is saved, waste of water resources can be received, and the process can be obtained through multiple tests, the water consumption for dyeing and finishing one ton of grey cloth is about 50 tons, the steam consumption is 2.1vap/kg, the process time is 5.5-6 hours, the equipment power consumption is about 0.15kw/kg, the improved process for dyeing and finishing one ton of grey cloth has the water consumption of about 30-35 tons, the steam consumption is 1.38vap/kg, the process time is 3.5-4 hours, and the equipment power consumption is about 0.08 kw/kg.

The alkali agent is fully contacted with the cloth before the dye, the alkali agent has obvious oil removing effect, the adsorption effect of the dye on the cloth is improved, and meanwhile, the active turquoise blue taking a copper phenolphthalein cyanine structure as a parent body and the deep blue taking a metal complex as a parent body are not suitable for the process through tests.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.