CN102534055B - A kind of ashless or few grey liming dehairing process recycling spent lime liquor - Google Patents
A kind of ashless or few grey liming dehairing process recycling spent lime liquor Download PDFInfo
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- CN102534055B CN102534055B CN201110007765.4A CN201110007765A CN102534055B CN 102534055 B CN102534055 B CN 102534055B CN 201110007765 A CN201110007765 A CN 201110007765A CN 102534055 B CN102534055 B CN 102534055B
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- minutes
- liming
- turns
- lime liquor
- spent lime
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 30
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 30
- 239000004571 lime Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 41
- 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
- 239000003513 alkali Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 230000035617 depilation Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 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
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010985 leather Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process 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
- 230000003247 decreasing effect Effects 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
- 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
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- Processing Of Solid Wastes (AREA)
Abstract
The infinite circulating that the invention provides a kind of ashless (or few ash) uses the liming dehairing process of spent lime liquor, and it is characterized in that all waste liquids realize infinite circulating and utilize, liming effect is better than common process.And greatly reduce the consumption of lime and other limiting material, save lime 50%-100%, save other associated materials 40%-60%.
Description
Technical field
The invention belongs in leather production technical field and make full use of starting material, the green circulatory technique of decreasing pollution discharge, release a kind of novel infinite circulating that is ashless or few ash herein and utilize waste liquid to carry out the leather-making technology of liming.
Background technology
Now, China has become the leather big producing country generally acknowledged in the world, but developing rapidly of leather industry, also result in serious environmental pollution, the wasting of resources and ecological damage.Containing grease and degradation production, salt, lime, liming agent, S2-, OH-, Na+, Ca2+, protein and degradation production, enzyme and amine substance etc. in Lime Liquor, wherein, generally, lime residual in waste liquid is generally the 37%-55% of initial content, Na2S content residual in waste liquid is generally 2.4g/1-3.2g/l, if spent lime liquor discharges arbitrarily, not only great pollution is caused to environment, and the great wasting of resources can be produced.
At present, both at home and abroad the method that spent lime liquor processes is mainly contained: chemical reduction method, electrolytic process, membrane separation process, absorption method, ion exchange method, biological process etc., but its operational process often spend high, efficiency is low, weak effect cannot reach real pollution treatment object.
Summary of the invention
Object of the present invention: infinite circulating uses spent lime liquor; normal volatilization under removing state of nature and outside inevitably spilling; the rate of recovery of waste liquid can reach 100%, has thoroughly eradicated spent lime liquor and has discharged the right problem of serious dirt brought, simultaneously a large amount of saving lime and other related chemistry material.Save lime 50%-100%, save other associated materials 40%-60%, and ensure liming effect, graywall expands better, lines open might as well, blue skin shrinkage temperature improves more than 1 DEG C than common process, and grain is careful, color is light, bright.The resultant Leather property indices produced thus all reaches requirement, and improves the degree of packing and the fullness ratio of finished leather.
For achieving the above object, technical scheme of the present invention is as follows:
Useless grey alkali lye liquid storage tank is set near liming rotary drum, and lye pump is set in order to pumping waste liquid use.In waste liquid pool, whipping appts is set, also can uses hand mixing.Enter useless grey alkali lye liquid storage tank from after 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 technique utilizing spent lime liquor to carry out liming is: with raw hide weighing scale, and 3-200% spent lime liquor, turns 5-20 minute; 0.05-2.5%NaHS, turn 30 minutes/stop 30 minutes, continuous 1-2 time, after turn 20-40 minute; 3-200% spent lime liquor, turns 5-20 minute; 0.05-1.5%Na2S, 0.1-2.0%NaHS, 0.1-3.0% auxiliary liming agent, 0-3.0% ash, turns 20-60 minute; The basic materials such as 0.1-3.0%NaOH or KOH, add at twice, each 15 minutes, stop 20 points, then start to filter hair; 3-200% spent lime liquor, turns 5-20 minute; 0.1-2.5%NaHS, 0.2-3.0% auxiliary liming agent, the basic materials such as 0.1-3.0%NaOH or KOH, add at twice, each 15 minutes, stop 30 minutes, then turn 30 minutes/stop 30 minutes, continuous 1-2 time; 3-200% spent lime liquor, turns 5-20 minute; 0.1-3.0% auxiliary liming agent, the basic materials such as 0.1-3.0%NaOH or KOH, divide and add for four times, each 15 minutes, stop 30 minutes, then turn 5 minutes/stop 25 minutes, continuous 27-33 time.PH value requires 10.0-14.0.
This such scheme, the consumption of various chemical material and kind, waste liquid consumption, operating time, working order etc. all can be made according to user's particular case and significantly adjusting, and also other chemical material can be selected with alternative above-mentioned materials according to user's particular case.The percentage ratio of chemical materials used is with the weighing scale of raw hide.
Embodiment
Below by example, the present invention is specifically described and further instruction.
Embodiment
Technique is: 70% spent lime liquor, turns 10 minutes; 0.3%NaHS, turns 30 minutes/stops 30 minutes, turns 30 minutes afterwards; 70% spent lime liquor, turns 10 minutes; 0.3%Na2S, 0.5%NaHS, 0.5% auxiliary liming agent, 0.4% ash, turns 30 minutes; 0.3%NaOH, adds at twice, each 15 minutes, stops 20 points, then starts to filter hair; 70% spent lime liquor, turns 10 minutes; 0.35%NaHS, 0.7% auxiliary liming agent, 0.4%NaOH, adds at twice, each 15 minutes, stops 30 minutes, then turns 30 minutes/stops 30 minutes; 100% spent lime liquor, turns 10 minutes; 0.7% auxiliary liming agent, 1.0%NaOH, divides and adds for four times, each 15 minutes, stop 30 minutes, then turn 5 minutes/stop 25 minutes, continuous 30 times.
When not departing from the present invention's spirit or substantive features, the present invention can be implemented in other forms, with reference to claim but not above-mentioned specification sheets, as instruction scope of the present invention.
Claims (2)
1. ashless or few grey liming dehairing process recycling spent lime liquor, it is characterized in that: on liming rotary drum side, useless grey alkali lye liquid storage tank is set, useless grey alkali lye liquid storage tank is entered from after 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 technique utilizing spent lime liquor to carry out liming depilation is: with raw hide weighing scale, and 3-200% spent lime liquor, turns 5-20 minute; 0.05-2.5%NaHS, turn 30 minutes/stop 30 minutes, continuous 1-2 time, after turn 20-40 minute; 3-200% spent lime liquor, turns 5-20 minute; 0.05-1.5%Na
2s, 0.1-2.0%NaHS, 0.1-3.0% auxiliary liming agent, 0-3.0% ash, turns 20-60 minute; 0.1-3.0%NaOH or KOH basic material, adds at twice, each 15 minutes, stops 20 points, then starts to filter hair; 3-200% spent lime liquor, turns 5-20 minute; 0.1-2.5%NaHS, 0.2-3.0% auxiliary liming agent, 0.1-3.0%NaOH or KOH basic material, adds at twice, each 15 minutes, stops 30 minutes, then turns 30 minutes/stops 30 minutes, continuous 1-2 time; 3-200% spent lime liquor, turns 5-20 minute; 0.1-3.0% auxiliary liming agent, 0.1-3.0%NaOH or KOH basic material, divides and adds for four times, each 15 minutes, stop 30 minutes, then turn 5 minutes/stop 25 minutes, continuous 27-33 time, and pH value requires 10.0-14.0.
2. a kind of ashless or few grey liming dehairing process recycling spent lime liquor as claimed in claim 1, it is characterized in that near liming rotary drum, arrange useless grey alkali lye liquid storage tank, and lye pump is set in order to pumping waste liquid use, in waste liquid pool, whipping appts is set, or uses hand mixing.
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 |
|---|---|---|---|
| CN201010592231.8 | 2010-12-14 | ||
| CN2010105922318 | 2010-12-14 | ||
| CN201010592231 | 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 |
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| Publication Number | Publication Date |
|---|---|
| CN102534055A CN102534055A (en) | 2012-07-04 |
| CN102534055B true CN102534055B (en) | 2015-08-12 |
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| 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 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994657B (en) * | 2012-12-24 | 2014-07-16 | 焦作隆丰皮草企业有限公司 | Method for treating slunk |
| CN103525955A (en) * | 2013-04-18 | 2014-01-22 | 张壮斗 | Tanning waste liquor stepwise recycling process with good effects |
| CN104694675A (en) * | 2013-12-04 | 2015-06-10 | 张壮斗 | Novel process for manufacturing leather with simple procedures and equipment |
| 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 |
| CN112458218B (en) * | 2019-09-17 | 2023-06-02 | 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 |
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| CN102534055A (en) | 2012-07-04 |
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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 |
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