CN102559948A - Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity) - Google Patents
Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity) Download PDFInfo
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- CN102559948A CN102559948A CN2011100092442A CN201110009244A CN102559948A CN 102559948 A CN102559948 A CN 102559948A CN 2011100092442 A CN2011100092442 A CN 2011100092442A CN 201110009244 A CN201110009244 A CN 201110009244A CN 102559948 A CN102559948 A CN 102559948A
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- lime
- lime liquor
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Abstract
The invention provides a sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity). The invention has the following characteristics: infinite recycling of all the waste liquid is realized, a liming effect is better than that of a conventional process, usage amount of lime and other liming materials is substantially reduced, lime is saved by 50 to 100%, and other related materials are saved by 40 to 60%.
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 a kind of leather-making technology that carries out liming to recycle in the indefinitely waste liquid of the ashless of sheepskin or few ash 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, lime, liming agent, S in the liming waste liquid
2-, Na
+, Ca
2+, protein and degradation production thereof 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 also very high, 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, 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:
The waste liquid 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 liming waste liquid liquid storage tank behind the solid substance in the waste liquid elimination waste liquid of liming operation, stir, to be ready for use on down the liming of batch skin. utilize spent lime liquor to carry out the operation steps of liming: at first, wrap grey alkali, wrapping grey alkali can add Na with traditional lime
2S and other cushioning material preparation unhairing paste also can singly be used Na
2S (without lime) solution carries out then that machine is coated with or artificial coating, behind the certain hour, carries out liming then, and its technology is: in raw hide weight, and the 3-400% spent lime liquor, 0.1-3.0%NaHS, the 0.1-2.0% permeate agent changeed 10-30 minute; The 0.1-3.0% auxiliary liming agent, the 0.05-3.0% grease-removing agent, 0-5.0% ash, changes 30 minutes/stopped continuous 1-3 time 30 minutes; The 3-400% spent lime liquor, 0-4.0%, change 30 minutes/stopped 1-3 time continuously 30 minutes; The back change 5 minutes/stopped 9-12 time continuously 99 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
Utilize spent lime liquor to carry out the operation steps of liming: at first, to wrap grey alkali, add Na with traditional lime
2S prepares unhairing paste, carries out the manual work coating, and behind the certain hour, liming is carried out in artificial epilation then, and its technology is: in raw hide weight, and 150% spent lime liquor, 0.3%NaHS, 0.5% permeate agent changeed 20 minutes; 1.2% auxiliary liming agent, 0.2% grease-removing agent, 1.0% ash, change 30 minutes/stopped continuous 2 times 30 minutes; 150% spent lime liquor, 3.0% ash, change 30 minutes/stopped 30 minutes, the back change 5 minutes/stopped continuous 11 times 99 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 spent lime liquor liquid storage tank that is provided with of liming rotary drum; From entering the spent lime liquor liquid storage tank behind the solid substance in the waste liquid elimination waste liquid of liming operation; Stir; To be ready for use on down the liming of batch skin. utilize spent lime liquor to carry out the operation steps of liming: at first, wrap grey alkali, wrapping grey alkali can add Na with traditional lime
2S and other cushioning material preparation unhairing paste also can singly be used Na
2S (without lime) solution carries out then that machine is coated with or artificial coating, and liming is carried out in artificial epilation then behind the certain hour, and its technology is: in raw hide weight, and the 3-400% spent lime liquor, 0.1-3.0%NaHS, the 0.1-2.0% permeate agent changeed 10-30 minute; The 0.1-3.0% auxiliary liming agent, the 0.05-3.0% grease-removing agent, 0-5.0% ash, changes 30 minutes/stopped continuous 1-3 time 30 minutes; The 3-400% spent lime liquor, 0-4.0%, change 30 minutes/stopped 1-3 time continuously 30 minutes; The back change 5 minutes/stopped 9-12 time continuously 99 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. the waste liquid 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 |
|---|---|---|---|
| CN201110009244.2A CN102559948B (en) | 2010-12-14 | 2011-01-05 | Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity) |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010592333 | 2010-12-14 | ||
| CN201010592333.X | 2010-12-14 | ||
| CN201010592333X | 2010-12-14 | ||
| CN201110009244.2A CN102559948B (en) | 2010-12-14 | 2011-01-05 | Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102559948A true CN102559948A (en) | 2012-07-11 |
| CN102559948B CN102559948B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110009244.2A Active CN102559948B (en) | 2010-12-14 | 2011-01-05 | Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity) |
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| CN (1) | CN102559948B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107435185A (en) * | 2017-06-28 | 2017-12-05 | 任新庄 | A kind of preparation method of wool felt |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381581C (en) * | 2002-05-22 | 2008-04-16 | 巴斯福股份公司 | Method for removing horn substance from skins, pelts, or furs |
| CN101812550A (en) * | 2010-04-23 | 2010-08-25 | 海宁森德皮革有限公司 | Environment-friendly leather making process for automotive seat cushion leather |
-
2011
- 2011-01-05 CN CN201110009244.2A patent/CN102559948B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381581C (en) * | 2002-05-22 | 2008-04-16 | 巴斯福股份公司 | Method for removing horn substance from skins, pelts, or furs |
| CN101812550A (en) * | 2010-04-23 | 2010-08-25 | 海宁森德皮革有限公司 | Environment-friendly leather making process for automotive seat cushion leather |
Non-Patent Citations (1)
| Title |
|---|
| 屈惠东: "制革浸灰废液循环使用的工艺研究", 《中国皮革》, vol. 23, no. 11, 30 November 1994 (1994-11-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107435185A (en) * | 2017-06-28 | 2017-12-05 | 任新庄 | A kind of preparation method of wool felt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102559948B (en) | 2015-05-20 |
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Effective date of registration: 20160524 Address after: 476000 No. 6 Changjiang East Road, Shangqiu Development Zone, Henan Patentee after: Baosika (Shangqiu) Chemical Co.,Ltd. Address before: 476000 development zones in Henan province Shangqiu City Star Road and Changjiang Road intersection Patentee before: Zhang Zhuangdou |