CN85100116B - Centrifugal Extraction Process for Recovering Lanolin from Wool Washing Wastewater - Google Patents
Centrifugal Extraction Process for Recovering Lanolin from Wool Washing Wastewater Download PDFInfo
- Publication number
- CN85100116B CN85100116B CN85100116A CN85100116A CN85100116B CN 85100116 B CN85100116 B CN 85100116B CN 85100116 A CN85100116 A CN 85100116A CN 85100116 A CN85100116 A CN 85100116A CN 85100116 B CN85100116 B CN 85100116B
- Authority
- CN
- China
- Prior art keywords
- waste water
- extraction
- lanolin
- adopt
- wool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 238000000605 extraction Methods 0.000 title claims abstract description 39
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 239000004166 Lanolin Substances 0.000 title claims abstract description 22
- 229940039717 lanolin Drugs 0.000 title claims abstract description 22
- 235000019388 lanolin Nutrition 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 17
- 210000002268 wool Anatomy 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 238000009834 vaporization Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000001471 micro-filtration Methods 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010887 waste solvent Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Extraction Or Liquid Replacement (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Physical Water Treatments (AREA)
Abstract
A centrifugal extraction process for recovering lanolin from waste water after washing wool. The present invention belongs to a method for recovering lanolin from waste water. The waste water from wool washing machine is settled and microfiltered and then sent into centrifugal extractor, at the same time the extractant is pumped into centrifugal extractor from extractant storage tank, and two processes of extraction and centrifugal separation are completed at the same time, the whole process only needs 1 minute. The removal rate of lanolin in the wastewater can reach 50-70%, the removal rate of suspended matters can reach 85-90%, and the separated water is recycled for wool washing after the extracted wastewater passes through an oil-water separator.
Description
The invention belongs to a kind of method that from waste water, reclaims lanolin.
The method that reclaims lanolin from the waste water of washing the discharge of wool machine has many kinds, at present traditional centrifugal separation and the extraction process of normal both at home and abroad employing.The main technique of centrifugal separation is earlier waste water from washing wool to be precipitated, and is heated to 70～80 ℃, enters supercentrifuge again lanolin is separated from waste water.Extraction process is earlier with the waste water from washing wool coagulating sedimentation, lanolin in the waste water is deposited in the mud, after the sludge dewatering, with organic solvent, hybrid extraction by a certain percentage such as benzene, sherwood oil, ketone, alcohol for example, make lanolin change molten in organic solvent, carry out precipitate and separate by proportion official post organic solvent and mud then.The extraction equipment that adopts has intermittent type to stir extractor or rotating disc contactor etc. both at home and abroad.Songjiang, Shanghai lanolin factory, the clear 52-3607 of Japanese Patent, clear 50-3405, clear 48-3354 etc. adopt extraction process.Contain fatsolvent and pass through the evaporative condenser system lanolin and separated from solvent.Solvent can continue to recycle.
Above-mentioned several recovery lanolin technologies respectively have characteristics, and centrifugation process is simple, but the rate of recovery is lower, has only 30% usually, and when containing lanolin concentration in the waste water from washing wool and be lower than 10 grams per liters, its rate of recovery is lower.The lanolin rate of recovery of extraction process is higher, can reach 60～70% usually, but noxious solvents such as employing benzene are made extraction agent, and the harm staff's is healthy, and its productivity of intermittent type stirring extraction is very low.Rotating disc contactor extraction process productivity has improved, but still separates waste water and solvent with settling process, and its equipment is still bigger, and separates not thorough.
Centrifugal extracting process provided by the present invention can overcome above-mentioned weak point.Its principal character is: with the migrate waste water from washing wool recycling field of woolen industry of the homemade LC-500 type centrifugal extractor that uses in the pharmaceutical industry, gasoline fraction with 60 ℃～90 ℃ of nontoxic organic solvents is made extraction agent, waste water process pre-treatment earlier is to remove earth impurity in the waste water, again with 60 ℃-90 ℃ gasoline fraction extraction agent respectively by being pumped into centrifugal extractor, finish two kinds of processes of centrifugation and extraction simultaneously, whole process only needs one minute, and the lanolin rate of recovery in the waste water can reach 50～70%.
Concrete technology of the present invention is provided by accompanying drawing.
Task of the present invention is finished in such a way: from two, the three-flute wool washing machine (1) with pump (3) extract out continuously 3～4 tons/time waste water from washing wool (2), send into inclined-plate clarifying basin (4), waste water stops half an hour approximately in (4), to remove the earth impurity in the waste water, enter W30 type Microfilter (5) again and further remove particle small in the waste water, filter screen adopts 100 * 700 orders/inch
2Microfilter (4) water outlet is sent into centrifugal extractor (7) through pump (6), meanwhile, 60 ℃-90 ℃ gasoline fraction extraction agent (19) with 1 ton/time flow send into centrifugal extractor (7) with pump (13) by extraction agent basin (12), this moment, built-in temperature control was 40～50 ℃, fine suspension residual in the waste water will be accumulated in machine in the Centrifugical extraction process gradually, increases the resistance of current.Therefore, need to adjust the charging valve, it is stable that inlet amount is kept.In addition, because in the two-phase extraction process, to produce middle layer (11) inevitably, its proportion forms third phase between water and extraction agent proportion, it is the mixed emulsion of water, extraction agent, lanolin, suspended substance, washing composition, in the Centrifugical extraction process of centrifugal extractor (7), need to adjust back pressure, middle layer (11) is not discharged with extraction agent, and with outside the waste water discharge machine, to keep the quality of lanolin.Waste water after the extraction enters oily water separation (8), and it also is an inclined plate sedimentation device.Waste water stops half an hour approximately in separator (8), middle layer (11) promptly can separate from waste water, float to the water surface, certain thickness to be accumulated to, for example 100～200 millimeters, again it is delivered to the inlet of pump (6), enter centrifugal extractor (7) and extract again.The water outlet (10) of water-and-oil separator (8) by pump (9) send two back to, the three-flute wool washing machine recycles in scouring of wool.Send basin (14) back to by the resiniferous gasoline fraction extraction agent that centrifugal extractor comes out, send into thin-film evaporator (16) with pump (15), under 500 mmhg vacuum tightnesss, carry out reduction vaporization, the gasoline fraction extraction agent is separated with lanolin, obtain lanolin (17).The gasoline fraction extraction agent steam water-cooled liquid gasoline cut extraction agent (19) that congeals into that is cooled in shell-and tube condenser (18) is got back to basin (12).By the gasoline fraction extraction agent steam that vacuum pump (20) is taken away, send tail gas condenser (21) to, be condensed into liquid gasoline cut extraction agent (19), get back to basin (12) equally, recycle in extraction.
Centrifugal extracting process provided by the present invention, its advantage are that the lanolin clearance in the waste water can reach 50～70%, and the suspended substance removal rate reaches 85～90%, waste water after the extraction is through water-and-oil separator, capable of circulationly be used for scouring of wool, save soft water, washing composition and alkali, high economic benefit is arranged.
Embodiment and effect
Claims (12)
1, a kind of extracting process that from wool washing waste water, reclaims lanolin, comprising: the pre-treatment of waste water from washing wool, extraction, separation, evaporation, condensation is characterized in that:
A. adopt the Microfilter pre-treatment,
B. adopt centrifugal extractor to carry out Centrifugical extraction,
C. adopt the thin-film evaporator reduction vaporization,
D. the water that the waste water after extracting is separated through water-and-oil separator returns wool washing machine,
E. in the Centrifugical extraction operation, utilize and adjust back pressure, make the middle layer with outside the waste water discharge machine.
2, method according to claim 1 is characterized in that in the reduction vaporization process, is to carry out reduction vaporization under 500 mmhg vacuum tightnesss.
3, method according to claim 1 is characterized in that extraction agent is to adopt 60 ℃～90 ℃ gasoline fraction.
4, method according to claim 1 is characterized in that in the Centrifugical extraction process, and the built-in temperature of centrifugal extractor is controlled at 40 ℃～50 ℃.
5, method according to claim 1 is characterized in that micro-filtration is to adopt 100 * 700 orders/inch
2The W30 type Microfilter of filter screen filters.
6, according to claim 1 or 3 described methods, the extraction agent flow that it is characterized in that sending into centrifugal extractor be 1 ton/time.
7,, it is characterized in that Centrifugical extraction is to adopt the centrifugal extractor of LC-500 type to extract according to claim 1 or 4 described methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100116A CN85100116B (en) | 1985-04-01 | 1985-04-01 | Centrifugal Extraction Process for Recovering Lanolin from Wool Washing Wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100116A CN85100116B (en) | 1985-04-01 | 1985-04-01 | Centrifugal Extraction Process for Recovering Lanolin from Wool Washing Wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100116A CN85100116A (en) | 1986-08-06 |
| CN85100116B true CN85100116B (en) | 1987-04-22 |
Family
ID=4790898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100116A Expired CN85100116B (en) | 1985-04-01 | 1985-04-01 | Centrifugal Extraction Process for Recovering Lanolin from Wool Washing Wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100116B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079425C (en) * | 1994-07-30 | 2002-02-20 | 武大文 | Device for refining wool grease from recovery and concentration of waste water of washing wool |
| CN102329694A (en) * | 2011-08-31 | 2012-01-25 | 朱新亮 | Wool grease low-temperature extraction process |
| CN102618383B (en) * | 2012-04-19 | 2013-05-29 | 北镇市五峰米业加工有限公司 | Production method and system of deacidification rice bran oil |
| CN102674503B (en) * | 2012-04-23 | 2014-01-29 | 西安交通大学 | Wool-washing wastewater treatment method by coupling ultrasonic demulsification and supercritical water oxidation |
| CN103979713B (en) * | 2014-05-21 | 2015-05-20 | 苏州爱立方服饰有限公司 | Wool washing wastewater treatment method |
| CN109970127B (en) * | 2019-04-15 | 2021-10-08 | 浙江普洛生物科技有限公司 | Method for recovering butyl acetate from antibiotic production wastewater |
| CN112680282A (en) * | 2020-12-31 | 2021-04-20 | 南京工大环境科技有限公司 | Wool scouring sludge fat extraction process |
-
1985
- 1985-04-01 CN CN85100116A patent/CN85100116B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100116A (en) | 1986-08-06 |
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