CN109182624B - Method for recycling shorn sheepskin dyeing waste liquid - Google Patents
Method for recycling shorn sheepskin dyeing waste liquid Download PDFInfo
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- CN109182624B CN109182624B CN201811206381.3A CN201811206381A CN109182624B CN 109182624 B CN109182624 B CN 109182624B CN 201811206381 A CN201811206381 A CN 201811206381A CN 109182624 B CN109182624 B CN 109182624B
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
- C14C3/06—Mineral tanning using chromium compounds
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to a method for recycling wool shearing dyeing waste liquid, which comprises the following steps: 1) putting the skin into a rotary drum, and mixing the materials according to a liquid ratio of 1: 12 adding bath lotion, keeping the temperature at 40 ℃, adding a mixture of a cleaning agent, an anionic surfactant and a lipid tanning agent, adding a penetrant phenol condensate after rotating for a period of time, adding a dyeing plate dye after rotating for a period of time; 2) adding the mixture into a rotary drum according to the liquid ratio of 1: adding water of 40 ℃ into the mixture 12, adding dyeing plate dye, adding a chromium-containing retanning agent after rotating for a period of time, and adding a chromium-containing aluminum retanning agent after rotating for a period of time. 3) Adjusting the pH =9 of the waste liquid obtained in the step 1) by using ammonia water, and returning the waste liquid to the step 1) to be used as a bath solution; 4) adding the mixture into a rotary drum according to the liquid ratio of 1: 12 adding 65 ℃ water, adding a wool dyeing dye, rotating for a period of time, and adding a deepening agent alkyl phosphate and a leveling agent anionic surfactant salt; 5) and (5) post-treatment. The invention reduces the problem of great dye waste and greatly reduces the cost.
Description
Technical Field
The invention belongs to the technical field of tanning, and particularly relates to a method for recycling shorn wool dyeing waste liquor.
Background
The dyeing process flow of the normal black vamp is as follows: dyeing plate, retanning and dyeing wool. The traditional process has the biggest problems of complex dyeing process, large water consumption and difficult treatment of dyeing wastewater; and the utilization rate of the dye of the dyeing plate is low, a large amount of dye remains in the bath lotion, so that the chroma of the waste water is increased, and the blackness of the finished product is not high after the dyeing is finished.
Disclosure of Invention
The invention aims to provide a method for recycling the shorn sheepskin dyeing waste liquid, so as to solve the problems. The technical scheme adopted by the invention is as follows:
a method for recycling shorn sheepskin dyeing waste liquid comprises the following steps:
1) putting the skin into a rotary drum, and mixing the materials according to a liquid ratio of 1: 12 adding bath lotion, keeping the temperature at 40 ℃, adding a mixture of a cleaning agent, an anionic surfactant and a lipid tanning agent, rotating for a period of time, adding a penetrant, a phenolic condensate, rotating for a period of time, adding a dyeing plate dye, rotating for a period of time, adding formic acid, rotating for a period of time, adding tanning extract, rotating for a period of time, adding a mixture of fatting agent phosphate and grease, rotating for a period of time, adding formic acid for multiple times, rotating for a period of time, adjusting the pH =3.5 of the bath lotion, discharging waste liquid, and adding water for cleaning;
2) adding the mixture into a rotary drum according to the liquid ratio of 1: adding water of 40 ℃ into the mixture 12, adding a dyeing plate dye, adding a chromium-containing retanning agent after rotating for a period of time, adding a chromium-aluminum-containing tanning agent after rotating for a period of time, simultaneously adding chromium powder and chromium tannin after rotating for a period of time, adding a chromium-containing retanning agent after rotating for a period of time, draining water after rotating for a period of time, and cleaning.
3) Discharging the waste liquid obtained in the step 1) into a circulating pool, and collecting the waste liquid; adjusting the pH of the waste liquid to be =9 by using ammonia water, and returning the waste liquid to the step 1) to be used as bath liquid;
4) adding the mixture into a rotary drum according to the liquid ratio of 1: adding water with the temperature of 65 ℃ into 12, adding a wool dyeing dye, adding a deepening agent alkyl phosphate and a leveling agent anionic surfactant salt after rotating for a period of time, adding a black dye after rotating for a period of time, adding a mixture of fatliquoring agent phosphate and grease after rotating for a period of time, adding formic acid step by step after rotating for a period of time, draining water and cleaning;
5) post-treatment;
the dye for dyeing plates in the steps 1) and 2) comprises acid black dye.
Further, the rotary drum is an inclined rotary drum.
Further, the adding amount of each chemical material in the step 1) is as follows: 0.5g/L of mixture of cleaning agent anionic surfactant and lipid tanning agent, 0.5g/L of penetrant phenolic condensate, 1g/L of tannin extract, and 0.5g/L of mixture of fatliquor phosphate and oil.
Further, the adding amount of each chemical material in the step 2) is as follows: 3g/l of chromium-containing retanning agent, 1g/l of chromium-containing aluminum retanning agent, 6g/l of chromium powder and 6g/l of chromium tannin.
Further, the adding amount of each chemical material in the step 4) is as follows: 1g/l of alkyl phosphate serving as a deepening agent, 2g/l of anionic surfactant salt serving as a leveling agent, and 1g/l of mixture of phosphate serving as a fatliquoring agent and grease.
Further, the post-processing of step 5) comprises the following steps:
51) adding the mixture into a rotary drum according to the liquid ratio of 1: 12, adding 25 ℃ water, adding 0.5g/l formic acid, rotating for a period of time, adding 1g/l degreasing agent fatty alcohol polyglycol ether mixture, rotating for a period of time, adding 0.1g/l sodium hydrosulfite, and draining water after rotating for a period of time;
52) adding the mixture into a rotary drum according to the liquid ratio of 1: 12 adding 25 ℃ water, adding 0.5g/l formic acid, rotating for a period of time, adding 1g/l softener anionic surfactant, rotating for a period of time, and draining water.
According to the invention, the traditional black dyeing process is improved, and the acid black dye is adopted, so that the dyeing bath liquid is recycled, the energy is saved, the emission is reduced, the problem of great dye waste caused by the traditional process is solved, and the cost is greatly reduced.
The invention has the following advantages:
1) the water consumption is reduced by 15 percent.
2) The product has high blackness and full chromaticity, and meets the requirements of customers.
3) The product has high color fastness, and is dry and wet wiped: dry wiping: 2.5, wet rubbing: 1.5.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
A method for recycling shorn sheepskin dyeing waste liquid comprises the following steps:
1) putting the leather into an inclined rotary drum, and mixing the leather according to a liquid ratio of 1: 12 adding bath liquid, heating to 40 ℃, adding 0.5g/L mixture of cleaning agent anionic surfactant and lipid tanning agent, rotating for 60 minutes, adding 0.5g/L penetrant phenolic condensate, rotating for 20 minutes, adding acid black dye and other black dye, rotating for 60 minutes, adding 0.5g/L formic acid, rotating for 60 minutes, adding 1g/L tannin extract, rotating for 60 minutes, adding 0.5g/L mixture of fatliquoring agent phosphate and oil, rotating for 30 minutes, adding 0.5g/L formic acid three times respectively, rotating for 20 minutes respectively, and finally adjusting the pH =3.5 of the bath liquid.
2) Discharging the waste liquor of the dyeing plate into a circulating pool, and collecting the waste liquor. Adjusting the pH of the dyeing waste liquor by ammonia water to be close to the pH of bath liquor in normal dyeing, specifically, the pH =9, and returning to the step 1) to be used as the bath liquor.
3) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, washing for 10 minutes and draining.
4) Adding water with the temperature of 40 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, adding dyes such as black HNC and the like, rotating for 40 minutes, adding 1g/l of chromium-containing retanning agent, rotating for 30 minutes, adding 2g/l of chromium-aluminum-containing retanning agent, rotating for 30 minutes, simultaneously adding 6g/l of chromium powder and 6g/l of chromium tannin, rotating for 60 minutes, adding 2g/l of chromium-containing retanning agent, rotating for 30 minutes
5) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 15, adding 0.5g/l of formic acid, washing for 10 minutes and draining.
6) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, washing for 10 minutes and draining.
7) Adding water with the temperature of 65 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, adding a wool dyeing dye, rotating for 30 minutes, adding 1g/l of a deepening agent alkyl phosphate and a leveling agent anionic surfactant salt for 2g/l, rotating for 20 minutes, adding a black dye, rotating for 60 minutes, adding 1g/l of a mixture of a fatting agent phosphate and grease for 30 minutes, then adding 0.5g/l of formic acid every 20 minutes, and adding formic acid twice in total. And (6) draining.
8) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, adding 0.5g/l of formic acid, washing for 10 minutes and draining.
9) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, respectively adding 0.5g/l formic acid, rotating for 5 minutes, adding 1g/l degreasing agent fatty alcohol polyglycol ether mixture, rotating for 10 minutes, adding 0.1g/l sodium hydrosulfite, rotating for 20 minutes, and draining.
10) Adding water with the temperature of 25 ℃ into an inclined rotary drum, wherein the liquid ratio is 1: 12, adding 0.5g/l formic acid, rotating for 10 minutes, adding 1g/l softener anionic surfactant, rotating for 30 minutes, and draining.
The sheared wool product dyed according to the method is subjected to color fastness detection according to GB/T3920-2008, and the detection result is dry rubbing: 2.5, wet rubbing: 1.5.
Claims (2)
1. a method for recycling shorn sheepskin dyeing waste liquid is characterized by comprising the following steps:
1) putting the leather into a rotary drum, wherein the rotary drum is an inclined rotary drum; according to the liquid ratio of 1: 12 adding bath lotion, keeping the temperature at 40 ℃, adding a mixture of a cleaning agent, an anionic surfactant and a lipid tanning agent, rotating for a period of time, adding a penetrant, a phenolic condensate, rotating for a period of time, adding a dyeing plate dye, rotating for a period of time, adding formic acid, rotating for a period of time, adding tanning extract, rotating for a period of time, adding a mixture of fatting agent phosphate and grease, rotating for a period of time, adding formic acid for multiple times, rotating for a period of time, adjusting the pH value of the bath lotion to be 3.5, discharging waste liquid, and adding water for cleaning; the adding amount of each chemical material in the step is as follows: 0.5g/L of mixture of cleaning agent anionic surfactant and lipid tanning agent, 0.5g/L of penetrant phenolic condensate, 1g/L of tannin extract, and 0.5g/L of mixture of fatliquor phosphate and oil;
2) adding the mixture into a rotary drum according to the liquid ratio of 1: 12, adding water with the temperature of 40 ℃, adding a dyeing plate dye, adding a chromium-containing retanning agent after rotating for a period of time, adding a chromium-containing aluminum tanning agent after rotating for a period of time, simultaneously adding chromium powder and chromium tannin after rotating for a period of time, adding a chromium-containing retanning agent after rotating for a period of time, draining water and cleaning after rotating for a period of time; the adding amount of each chemical material in the step is as follows: 3g/L of chromium-containing retanning agent, 1g/L of chromium-containing aluminum retanning agent, 6g/L of chromium powder and 6g/L of chromium tannin;
3) discharging the waste liquid obtained in the step 1) into a circulating pool, and collecting the waste liquid; adjusting the pH value of the waste liquid to 9 by using ammonia water, and returning the waste liquid to the step 1) to be used as bath liquid;
4) adding the mixture into a rotary drum according to the liquid ratio of 1: adding water with the temperature of 65 ℃ into 12, adding a wool dyeing dye, adding a deepening agent alkyl phosphate and a leveling agent anionic surfactant salt after rotating for a period of time, adding a black dye after rotating for a period of time, adding a mixture of fatliquoring agent phosphate and grease after rotating for a period of time, adding formic acid step by step after rotating for a period of time, draining water and cleaning; the adding amount of each chemical material in the step is as follows: 1g/L of alkyl phosphate serving as a deepening agent, 2g/L of anionic surfactant salt serving as a leveling agent, and 1g/L of mixture of phosphate serving as a fatting agent and grease;
5) post-treatment; the method comprises the following steps:
51) adding the mixture into a rotary drum according to the liquid ratio of 1: 12, adding 25 ℃ water, adding 0.5g/L formic acid, rotating for a period of time, adding 1g/L degreasing agent fatty alcohol polyglycol ether mixture, rotating for a period of time, adding 0.1g/L sodium hydrosulfite, and draining water after rotating for a period of time;
52) adding the mixture into a rotary drum according to the liquid ratio of 1: 12 adding 25 ℃ water, adding 0.5g/L formic acid, rotating for a period of time, adding 1g/L softener anionic surfactant, rotating for a period of time, and draining water.
2. The method for recycling the shorn sheepskin dyeing waste liquid according to claim 1, which is characterized by comprising the following steps: the dye for dyeing plates in the steps 1) and 2) comprises acid black dye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206381.3A CN109182624B (en) | 2018-10-17 | 2018-10-17 | Method for recycling shorn sheepskin dyeing waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206381.3A CN109182624B (en) | 2018-10-17 | 2018-10-17 | Method for recycling shorn sheepskin dyeing waste liquid |
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| Publication Number | Publication Date |
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| CN109182624A CN109182624A (en) | 2019-01-11 |
| CN109182624B true CN109182624B (en) | 2021-03-16 |
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| CN201811206381.3A Active CN109182624B (en) | 2018-10-17 | 2018-10-17 | Method for recycling shorn sheepskin dyeing waste liquid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282435A (en) * | 2016-08-30 | 2017-01-04 | 焦作隆丰皮草企业有限公司 | A kind of dye black-labour skill of fur |
| CN106521048A (en) * | 2016-10-27 | 2017-03-22 | 宁夏成丰农业科技开发股份有限公司 | Double-face leather integrated dyeing technology for lambskin |
| CN107956161A (en) * | 2017-11-28 | 2018-04-24 | 灯塔市兄弟皮毛硝染厂 | A kind of nitre dyeing technique of intermediate color suede |
-
2018
- 2018-10-17 CN CN201811206381.3A patent/CN109182624B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282435A (en) * | 2016-08-30 | 2017-01-04 | 焦作隆丰皮草企业有限公司 | A kind of dye black-labour skill of fur |
| CN106521048A (en) * | 2016-10-27 | 2017-03-22 | 宁夏成丰农业科技开发股份有限公司 | Double-face leather integrated dyeing technology for lambskin |
| CN107956161A (en) * | 2017-11-28 | 2018-04-24 | 灯塔市兄弟皮毛硝染厂 | A kind of nitre dyeing technique of intermediate color suede |
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| CN109182624A (en) | 2019-01-11 |
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Effective date of registration: 20230831 Address after: No. 5, Mengzhou Industrial Cluster District, Jiaozuo City, Henan Province, 454750 Patentee after: Longfeng Gelemei Fashion Co.,Ltd. Address before: No. 5, West Industrial Zone, Mengzhou City, Jiaozuo City, Henan Province Patentee before: HENAN PROSPER SKINS & LEATHER ENTERPRISE Co.,Ltd. |
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