CN102534055A - Ashless (or less-ash) liming unhairing process by recycling waste lime liquor indefinitely - Google Patents
Ashless (or less-ash) liming unhairing process by recycling waste lime liquor indefinitely Download PDFInfo
- Publication number
- CN102534055A CN102534055A CN2011100077654A CN201110007765A CN102534055A CN 102534055 A CN102534055 A CN 102534055A CN 2011100077654 A CN2011100077654 A CN 2011100077654A CN 201110007765 A CN201110007765 A CN 201110007765A CN 102534055 A CN102534055 A CN 102534055A
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- minutes
- liming
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- minute
- waste liquid
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Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 27
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 27
- 239000004571 lime Substances 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004064 recycling Methods 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 43
- 239000007788 liquid Substances 0.000 claims description 21
- 239000002425 soil liming agent Substances 0.000 claims description 10
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000035617 depilation Effects 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 238000013038 hand mixing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010985 leather Substances 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 241000502561 Acacia irrorata Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides an ashless (or less-ash) liming unhairing process by recycling waste lime liquor indefinitely, which is characterized in that all waste liquor can be recycled indefinitely, and a liming effect is better than that in a conventional process. Use quantity of lime and other liming materials is greatly reduced, 50%-100% of lime is saved, and 40%-60% of other relevant materials are saved.
Description
Technical field
The invention belongs in the leather production technical field and make full use of starting material, reduce the green circulation technology of disposal of pollutants, release the leather-making technology that a kind of novel recycle in indefinitely waste liquid ashless or few ash carries out liming here.
Background technology
Now, China has become the leather big producing country that generally acknowledges in the world, and still, developing rapidly of leather industry also caused serious environmental pollution, the wasting of resources and ecological damage.Contain grease and degradation production thereof, salt, lime, liming agent, S in the liming waste liquid
2-, OH
-, Na
+, Ca
2+, protein and degradation production, enzyme and amine substance etc., wherein, generally speaking, residual lime is generally the 37%-55% of initial content in the waste liquid, residual Na in the waste liquid
2S content is generally 2.4g/1-3.2g/l, if spent lime liquor discharges arbitrarily, not only environment is caused great pollution, and can produce the great wasting of resources.
At present; The method of both at home and abroad spent lime liquor being handled mainly contains: chemical reduction method, electrolytic process, membrane separation process, absorption method, ion exchange method, biological process etc., height, efficient are low, weak effect can't reach real pollution treatment purpose but its operational process often spends.
Summary of the invention
The object of the invention: recycle spent lime liquor indefinitely; Outside removing the normal volatilization under the state of nature and inevitably spilling; The recovery of waste liquid can reach 100%, has thoroughly eradicated the right problem of serious dirt that the spent lime liquor discharging brings, a large amount of simultaneously lime and other relevant chemical materials practiced thrift.Practice thrift lime 50%-100%, practice thrift other associated materials 40%-60%, and guarantee that liming effect, graywall expand better, lines open might as well, blue skin shrinkage temperature improves more than 1 ℃ than common process, and grain is careful, color is light, bright.Finished product leather each item performance index of producing thus all reach requirement, and have improved the degree of packing and the fullness ratio of finished leather.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
Useless grey alkali lye liquid storage tank is set near the liming rotary drum, and lye pump is set in order to pumping waste liquid usefulness.Whipping appts is set, also available hand mixing in the waste liquid pool.From entering useless grey alkali lye liquid storage tank behind the solid substance in the waste liquid elimination waste liquid of liming alkali operation, stir, to be ready for use on down the liming depilation of batch skin; The technology of utilizing spent lime liquor to carry out liming is: in raw hide weight, the 3-200% spent lime liquor changeed 5-20 minute; 0.05-2.5%NaHS, change 30 minutes/stopped 30 minutes, 1-2 time continuously, back commentaries on classics 20-40 minute; The 3-200% spent lime liquor changeed 5-20 minute; 0.05-1.5%Na
2S, 0.1-2.0%NaHS, the 0.1-3.0% auxiliary liming agent, the 0-3.0% ash changeed 20-60 minute; Basic material such as 0.1-3.0%NaOH or KOH adds at twice, and each 15 minutes, stopped 20 fens, begin the filter hair then; The 3-200% spent lime liquor changeed 5-20 minute; 0.1-2.5%NaHS, the 0.2-3.0% auxiliary liming agent, basic materials such as 0.1-3.0%NaOH or KOH add at twice, each 15 minutes, stopped 30 minutes, change then 30 minutes/stopped 1-2 time continuously 30 minutes; The 3-200% spent lime liquor changeed 5-20 minute; The 0.1-3.0% auxiliary liming agent, basic materials such as 0.1-3.0%NaOH or KOH divide to add for four times, each 15 minutes, stopped 30 minutes, change then 5 minutes/stopped 27-33 time continuously 25 minutes.The pH value requires 10.0-14.0.
This such scheme; The consumption of various chemical materials and kind, waste liquid consumption, running time, working order etc. all can be made adjustment significantly according to user's particular case, also can select other chemical material to substitute above-mentioned materials according to user's particular case.The percentage ratio of used chemical materials is in the weight of raw hide.
Embodiment
Through instance the present invention is carried out concrete description and further explanation below.
Embodiment
Technology is: 70% spent lime liquor, changeed 10 minutes; 0.3%NaHS, change 30 minutes/stopped 30 minutes, changeed 30 minutes the back; 70% spent lime liquor changeed 10 minutes; 0.3%Na
2S, 0.5%NaHS, 0.5% auxiliary liming agent, 0.4% ash changeed 30 minutes; 0.3%NaOH adds at twice, and each 15 minutes, stopped 20 fens, begin the filter hair then; 70% spent lime liquor changeed 10 minutes; 0.35%NaHS, 0.7% auxiliary liming agent, 0.4%NaOH adds at twice, each 15 minutes, stopped 30 minutes, change then 30 minutes/stopped 30 minutes; 100% spent lime liquor changeed 10 minutes; 0.7% auxiliary liming agent, 1.0%NaOH divides to add for four times, each 15 minutes, stopped 30 minutes, change then 5 minutes/stopped continuous 30 times 25 minutes.
Under the situation that does not break away from spirit of the present invention or substantive features, can be with other form embodiment of the present invention, with reference to claim but not above-mentioned specification sheets, as indication scope of the present invention.
Claims (6)
1. at the other grey alkali lye liquid storage tank that gives up that is provided with of liming rotary drum,, stir, to be ready for use on down the liming depilation of batch skin from entering useless grey alkali lye liquid storage tank behind the solid substance in the waste liquid elimination waste liquid of liming alkali operation; The technology of utilizing spent lime liquor to carry out the liming depilation is: in raw hide weight, the 3-200% spent lime liquor changeed 5-20 minute; 0.05-2.5%NaHS, change 30 minutes/stopped 30 minutes, 1-2 time continuously, back commentaries on classics 20-40 minute; The 3-200% spent lime liquor changeed 5-20 minute; 0.05-1.5%Na
2S, 0.1-2.0%NaHS, the 0.1-3.0% auxiliary liming agent, the 0-3.0% ash changeed 20-60 minute; Basic material such as 0.1-3.0%NaOH or KOH adds at twice, and each 15 minutes, stopped 20 fens, begin the filter hair then; The 3-200% spent lime liquor changeed 5-20 minute; 0.1-2.5%NaHS, the 0.2-3.0% auxiliary liming agent, basic materials such as 0.1-3.0%NaOH or KOH add at twice, each 15 minutes, stopped 30 minutes, change then 30 minutes/stopped 1-2 time continuously 30 minutes; The 3-200% spent lime liquor changeed 5-20 minute; The 0.1-3.0% auxiliary liming agent, basic materials such as 0.1-3.0%NaOH or KOH divide to add for four times, each 15 minutes, stopped 30 minutes, change then 5 minutes/stopped 27-33 time continuously 25 minutes.The pH value requires 10.0-14.0.
2. experiment showed, that through nearly 1 year big production this waste liquid circulating technology is fit to the existing big technological process of production of tannery.
3. recycle useless grey alkali lye indefinitely and carry out depilation liming, carry out press filtration after circulation for some time, slagging-off supervisor continued recycles.
4. the consumption of the various chemical materials in the right 1 and kind, waste liquid consumption, running time, working order etc. all can be made adjustment significantly according to user's particular case, also can select other chemical material to substitute above-mentioned materials according to user's particular case.
5. the percentage ratio in the right 1 is in the weight of raw hide.
6. useless grey alkali lye liquid storage tank is set near the liming rotary drum, and lye pump is set in order to pumping waste liquid usefulness.Whipping appts is set, also available hand mixing in the waste liquid pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110007765.4A CN102534055B (en) | 2010-12-14 | 2011-01-05 | A kind of ashless or few grey liming dehairing process recycling spent lime liquor |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010592231 | 2010-12-14 | ||
| CN201010592231.8 | 2010-12-14 | ||
| CN2010105922318 | 2010-12-14 | ||
| CN201110007765.4A CN102534055B (en) | 2010-12-14 | 2011-01-05 | A kind of ashless or few grey liming dehairing process recycling spent lime liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102534055A true CN102534055A (en) | 2012-07-04 |
| CN102534055B CN102534055B (en) | 2015-08-12 |
Family
ID=46342077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110007765.4A Active CN102534055B (en) | 2010-12-14 | 2011-01-05 | A kind of ashless or few grey liming dehairing process recycling spent lime liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102534055B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994657A (en) * | 2012-12-24 | 2013-03-27 | 焦作隆丰皮草企业有限公司 | Method for treating slunk |
| CN103966370A (en) * | 2014-04-14 | 2014-08-06 | 张壮斗 | Tanning technology for periodically filtering liming circulating wastewater |
| CN103981300A (en) * | 2014-06-06 | 2014-08-13 | 张壮斗 | Tanning technique for regularly filtering deashing and softening circulating wastewater |
| WO2014169564A1 (en) * | 2013-04-18 | 2014-10-23 | Zhang Zhuangdou | Tannery waste liquid step-by-step recycling process having improved effect |
| WO2015081624A1 (en) * | 2013-12-04 | 2015-06-11 | 张壮斗 | Tanning process |
| CN112458218A (en) * | 2019-09-17 | 2021-03-09 | 齐河力厚化工有限公司 | Leather liming process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2133779C1 (en) * | 1998-12-24 | 1999-07-27 | Данелян Сергей Эдуардович | Method of manufacturing heat-resistant russia upper leather from wet- saline conservation cattle skin |
| CN1323174C (en) * | 2002-10-21 | 2007-06-27 | 巴斯福股份公司 | Method for producing leather |
| WO2010070571A2 (en) * | 2008-12-17 | 2010-06-24 | Asociacion De Investigacion De Las Industrias Del Curtido Y Anexas | Procedure for the tanning of skins, material obtained during said procedure and device |
| CN101921881A (en) * | 2010-04-22 | 2010-12-22 | 张壮斗 | Novel process for recycling waste leather-making liquid step by step |
| SI2179065T1 (en) * | 2008-02-29 | 2013-11-29 | Leatherteq Limited | Method of preserving hides and skins |
-
2011
- 2011-01-05 CN CN201110007765.4A patent/CN102534055B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2133779C1 (en) * | 1998-12-24 | 1999-07-27 | Данелян Сергей Эдуардович | Method of manufacturing heat-resistant russia upper leather from wet- saline conservation cattle skin |
| CN1323174C (en) * | 2002-10-21 | 2007-06-27 | 巴斯福股份公司 | Method for producing leather |
| SI2179065T1 (en) * | 2008-02-29 | 2013-11-29 | Leatherteq Limited | Method of preserving hides and skins |
| WO2010070571A2 (en) * | 2008-12-17 | 2010-06-24 | Asociacion De Investigacion De Las Industrias Del Curtido Y Anexas | Procedure for the tanning of skins, material obtained during said procedure and device |
| CN101921881A (en) * | 2010-04-22 | 2010-12-22 | 张壮斗 | Novel process for recycling waste leather-making liquid step by step |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994657A (en) * | 2012-12-24 | 2013-03-27 | 焦作隆丰皮草企业有限公司 | Method for treating slunk |
| CN102994657B (en) * | 2012-12-24 | 2014-07-16 | 焦作隆丰皮草企业有限公司 | Method for treating slunk |
| WO2014169564A1 (en) * | 2013-04-18 | 2014-10-23 | Zhang Zhuangdou | Tannery waste liquid step-by-step recycling process having improved effect |
| WO2015081624A1 (en) * | 2013-12-04 | 2015-06-11 | 张壮斗 | Tanning process |
| CN103966370A (en) * | 2014-04-14 | 2014-08-06 | 张壮斗 | Tanning technology for periodically filtering liming circulating wastewater |
| CN103981300A (en) * | 2014-06-06 | 2014-08-13 | 张壮斗 | Tanning technique for regularly filtering deashing and softening circulating wastewater |
| CN112458218A (en) * | 2019-09-17 | 2021-03-09 | 齐河力厚化工有限公司 | Leather liming process |
| CN112458218B (en) * | 2019-09-17 | 2023-06-02 | 齐河力厚化工有限公司 | Leather liming process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102534055B (en) | 2015-08-12 |
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Effective date of registration: 20210603 Address after: 476000 No.6, East Changjiang Road, Shangqiu Development Zone, Henan Province Patentee after: BAOSIKA SHANGQIU CHEMICAL Co.,Ltd. Address before: 476000 intersection of Xinglin road and Changjiang Road, Shangqiu Development Zone, Henan Province Patentee before: Zhang Zhuangdou |