阅读说明：本技术 板蓝根植物染料用于散纤维染色的高效使用方法 (Efficient use method of isatis root vegetable dye for dyeing loose fibers ) 是由 祝洪哲 刘希泉 于 2019-12-12 设计创作，主要内容包括：本发明公开了板蓝根植物染料用于散纤维染色的高效使用方法,步骤如下：步骤1、制备氮气；步骤2：在工作液面的上方安装不锈钢阀门,在顶部安装止回阀；步骤3：将散纤维植物进行第一次染色,然后染色结束过滤出残余染液；步骤4：加入残余染液；步骤5：通过不锈钢阀门充入氮气；步骤6：将散纤维植物进行续缸染色,过滤出残余染液,然后对需要固色的散纤维植物进行氧化固色；步骤7：步骤6中的残余染液加入到空的散纤维染色机或空的化料缸或空的储料缸或空的染色副缸中,跳到步骤5。本发明提高蓝色植物染料的耐光色牢度,可以使蓝色植物染料应用于大规模的工业生产中以代替部分化学染料染色,大幅节省植物染料、节水环保,从而使得板蓝根植物染料得以高效使用。(The invention discloses an efficient use method of isatis root vegetable dye for dyeing loose fibers, which comprises the following steps: step 1, preparing nitrogen; step 2: a stainless steel valve is arranged above the working liquid level, and a check valve is arranged at the top of the stainless steel valve; and step 3: dyeing loose fiber plants for the first time, and then filtering out residual dye liquor after dyeing is finished; and 4, step 4: adding residual dye liquor; and 5: nitrogen is filled in through a stainless steel valve; step 6: carrying out vat-continuation dyeing on loose fiber plants, filtering out residual dye liquor, and then carrying out oxidation color fixation on the loose fiber plants needing color fixation; and 7: and (5) adding the residual dye liquor in the step 6 into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank, and jumping to the step 5. The method improves the light fastness of the blue vegetable dye, can apply the blue vegetable dye to large-scale industrial production to replace partial chemical dye for dyeing, greatly saves the vegetable dye, saves water and protects the environment, thereby leading the isatis root vegetable dye to be efficiently used.)

1. The efficient use method of the isatis root vegetable dye for dyeing the loose fibers is characterized by comprising the following steps:

step 1, preparing nitrogen: the nitrogen is liquid nitrogen or is prepared by utilizing air;

step 2: a hole is formed above the working liquid level of the loose fiber dyeing machine or the material melting cylinder or the material storage cylinder or the dyeing auxiliary cylinder, a stainless steel valve is arranged on the hole and used for filling nitrogen, and a check valve is arranged at the top of the loose fiber dyeing machine or the material melting cylinder or the material storage cylinder or the dyeing auxiliary cylinder and used for discharging air when the nitrogen is filled;

and step 3: adding radix Isatidis plant dye and adjuvant into loose fiber dyeing machine or material tank or material storage tank or dyeing auxiliary tank, dyeing loose fiber plant at 20-25 deg.C for the first time, and filtering to obtain residual dye solution after dyeing;

and 4, step 4: adding the residual dye liquor into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank;

and 5: filling nitrogen into an empty loose fiber dyeing machine or an empty material melting cylinder or an empty material storage cylinder or an empty dyeing auxiliary cylinder through a stainless steel valve, and discharging air through a check valve;

step 6: adding the isatis root plant dye and the auxiliary agent into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank again, then carrying out cylinder continuation dyeing on the loose fiber plants at 25-35 ℃, filtering out residual dye liquor after the cylinder continuation dyeing is finished, and then adding clear water and hydrogen peroxide into the loose fiber plants needing color fixation so as to carry out oxidation color fixation on the loose fiber plants needing color fixation;

and 7: and (5) adding the residual dye liquor in the step 6 into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank, and jumping to the step 5.

2. The efficient use method of the isatis root vegetable dye for dyeing the loose fibers, as claimed in claim 1, is characterized in that the preparation of the nitrogen by using the air is carried out by taking the air as a raw material and adopting a pressure swing adsorption or membrane separation method to prepare the nitrogen.

3. The efficient use method of the isatis root plant dye for dyeing the loose fibers as claimed in claim 1, wherein the usage amount of the isatis root plant dye in the step 6 is 20-80% of that of the isatis root plant dye in the step 3, and the usage amount of the auxiliary agent in the step 6 is 20-80% of that of the auxiliary agent in the step 3.

4. The efficient use method of the isatis root plant dye for dyeing the loose fibers, as recited in claim 1, is characterized in that the dyeing time of the continuous vat dyeing is 60-120 minutes.

5. The efficient use method of the isatis root plant dye for dyeing the loose fibers according to claim 1, wherein in the step 5, the loose fibers are subjected to cylinder-by-cylinder dyeing at 28-30 ℃.

Technical Field

The invention relates to a high-efficiency use method of an isatis root vegetable dye for dyeing loose fibers.

Background

The isatis root is also called isatis tinctoria, is a common traditional Chinese medicine suitable for being planted in large quantities in the north, and the fresh stems and leaves of the isatis tinctoria are naturally fermented to be prepared into natural plant dye which is the plant dye with the largest dosage. The dyeing process of the blue plant dye is a reduction-oxidation process, and the dye uptake of the plant dye is lower than 60 percent, namely more than 40 percent of the plant dye can not be fully used after each dyeing, so that the resources are wasted, and the residual dye liquor is discharged to pollute the environment.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a high-efficiency use method of isatis root vegetable dye for dyeing loose fibers.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the efficient use method of the isatis root vegetable dye for dyeing loose fibers comprises the following steps:

step 1, preparing nitrogen: the nitrogen is liquid nitrogen or is prepared by utilizing air;

step 2: a hole is formed above the working liquid level of the loose fiber dyeing machine or the material melting cylinder or the material storage cylinder or the dyeing auxiliary cylinder, a stainless steel valve is arranged on the hole and used for filling nitrogen, and a check valve is arranged at the top of the loose fiber dyeing machine or the material melting cylinder or the material storage cylinder or the dyeing auxiliary cylinder and used for discharging air when the nitrogen is filled;

and step 3: adding radix Isatidis plant dye and adjuvant into loose fiber dyeing machine or material tank or material storage tank or dyeing auxiliary tank, dyeing loose fiber plant at 20-25 deg.C for the first time, and filtering to obtain residual dye solution after dyeing;

and 4, step 4: adding the residual dye liquor into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank;

and 5: filling nitrogen into an empty loose fiber dyeing machine or an empty material melting cylinder or an empty material storage cylinder or an empty dyeing auxiliary cylinder through a stainless steel valve, and discharging air through a check valve;

step 6: adding the isatis root plant dye and the auxiliary agent into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank again, then carrying out cylinder continuation dyeing on the loose fiber plants at 25-35 ℃, filtering out residual dye liquor after the cylinder continuation dyeing is finished, and then adding clear water and hydrogen peroxide into the loose fiber plants needing color fixation so as to carry out oxidation color fixation on the loose fiber plants needing color fixation;

and 7: and (5) adding the residual dye liquor in the step 6 into an empty loose fiber dyeing machine or an empty material melting tank or an empty storage tank or an empty dyeing auxiliary tank, and jumping to the step 5.

Preferably, the nitrogen is produced by using air as a raw material and by a pressure swing adsorption or membrane separation method.

Preferably, the usage amount of the isatis root vegetable dye in the step 6 is 20-80% of that of the isatis root vegetable dye in the step 3, and the usage amount of the auxiliary agent in the step 6 is 20-80% of that of the auxiliary agent in the step 3.

Preferably, the dyeing time of the jar-continued dyeing is 60 to 120 minutes.

Preferably, in the step 5, the loose fiber plants are subjected to cylinder dyeing at 28-30 ℃.

The invention has the following beneficial effects: the nitrogen or liquid nitrogen separated from air is used as protective gas to isolate oxygen, so that the dyeing temperature can be obviously improved, the dye uptake and the level dyeing property are improved, the light fastness of the blue plant dye is improved, the blue plant dye can be applied to large-scale industrial production to replace partial chemical dye for dyeing, the dye liquor is effectively protected due to the fact that nitrogen is used for sealing in dye liquor storage equipment such as a dyeing machine, a material dissolving tank, a material storage tank, a dyeing auxiliary tank and the like, the residual dye liquor after dyeing each time can be recycled, the plant dye and the auxiliary agent which are 20-80% of the total dye consumption in the original process formula are added for continuous tank dyeing, the plant dye is greatly saved, water is saved, and the environment is protected, and the isatis root plant dye can be efficiently used.

Detailed Description

The technical solution of the present invention is further explained below: