CN104860463A - Ultrafiltration concentration and centrifugal separation combined process for lanolin extraction - Google Patents
Ultrafiltration concentration and centrifugal separation combined process for lanolin extraction Download PDFInfo
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- CN104860463A CN104860463A CN201510261285.9A CN201510261285A CN104860463A CN 104860463 A CN104860463 A CN 104860463A CN 201510261285 A CN201510261285 A CN 201510261285A CN 104860463 A CN104860463 A CN 104860463A
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- 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
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Abstract
The invention relates to an ultrafiltration concentration and centrifugal separation combined process for lanolin extraction. The ultrafiltration concentration and centrifugal separation combined process comprises the following steps: wool is washed in a multi-stage circulating manner: multiple stages of wool washing tanks are arranged to wash the wool, the wool is conveyed from the first-stage wool washing tank to the final-stage wool washing tank, and washing water flows from the final-stage wool washing tank to the second-stage wool washing tank in a countercurrent manner for mechanical application; rotary cross-flow type ultrafiltration membrane rotating discs are arranged in an ultrafiltration concentration tank and used for ultrafiltration concentration, a concentrated solution enters the next step, water after ultrafiltration returns to the third-stage wool washing tank through a reflux pump for reuse; the concentrated solution is precipitated in a grit chamber, and large-particle impurities are removed; the concentrated solution is heated in a heating tank; the heated concentrated solution is subjected to residue-water-oil three-phase separation through a three-phase centrifuge. The ultrafiltration concentration and centrifugal separation combined process for lanolin extraction has the advantages as follows: the recovery rate of the lanolin can be increased obviously, the cyclic utilization rate of the washing water is increased, fresh water and detergent are saved, the emission and pollutant concentration of wool washing wastewater are reduced, and load for follow-up sewage treatment is reduced.
Description
Technical field
The invention belongs to field of textiles, the wool-cleaning technology especially in weaving, be specifically related to ultrafiltration and concentration and the centrifugation combination process of the extraction of a kind of lanolin.
Background technology
The method extracting lanolin at present from wool grease scouring water has a lot, and comprise centrifuging, By Bubble-floating Method, Coagulation Method, extraction process, ultrafiltration process etc., wherein, centrifuging is the method that Present Domestic is most widely used.From the washing water in wool-cleaning technology first through desilting pre-treatment, be then heated to about 85 DEG C, enter three-phase centrifuge and carry out centrifugally carrying oil, wherein slag discharges mutually, and aqueous phase turns back to wool-cleaning technology, and oil phase reclaims.The oil phase reclaimed is heated to about 85 DEG C, again carries out oily water separation, reclaims degras wherein.The technical process of this method is fairly simple, and shortcoming is that the lanolin rate of recovery is low, generally can only reach 40 ~ 45%, and what be applicable to centrifugation contains lipid concentration generally at more than 15g/L, and when concentration is lower than 10g/L, the rate of recovery of lanolin is lower.Current centrifugal oil extracting process, the lanolin of about 60% discharges mutually with slag, while waste this " liquid golden ", also brings very serious water pollution problems, waste water from washing wool process up to standard with high costs.
Along with the development of membrane separation technique, ultra-filtration technique concentration and recovery lanolin is adopted to become trend, about the research report of this respect is a lot.Due to the lipid oil droplet that the aperture of ultra-filtration membrane is 0.1 ~ 50 μm much smaller than diameter, therefore, to suspend and the lanolin of emulsification state can all be retained by ultra-filtration membrane in theory.Correlative study shows, adopts ultrafiltration and concentration technology that the actual recovered rate of lanolin can be made more than 90%.But, due to the hollow-fibre membrane that adopts at present or plate and frame flat sheet membrane equipment, the situation of aeration operation cannot be carried out at wool grease scouring water, the harsh and unforgiving environments such as thin mud, grease, residual wool cannot be born at all, very easily block in reclaimer operation.Frequent jams, back flushing, matting, membrane module replacing etc., limit its industrial applications.
Especially, the many ultrafiltration and concentration experimental studies carried out, all mutually for concentrated object with whizzer aqueous phase or slag, the centrifugal water after oil and/or the slag carried is attempted again to carry out centrifugally carrying oil after ultrafiltration and concentration to certain contents level, owing to going through the lanolin after desilting, heating, the operation such as centrifugal, most adsorb by fine deposit, ultrafiltration and concentration is difficult to reach desirable effect.Therefore, traditional ultra-filtration technique there is no at present and is applied to the successful commercialization case that in wool-cleaning technology, lanolin extracts.
Summary of the invention
For solving the problems of the technologies described above, the invention provides ultrafiltration and concentration and the centrifugation combination process of lanolin extraction, this technique is to rotate cross-current type membrane separation plant for concentrated means, with the second wash water in wool-cleaning technology flow process for ultrafiltration and concentration object, significantly can increase the rate of recovery of lanolin, improve the reusing rate that scouring of wool is produced, reduce the quantity discharged of waste water from washing wool and organic pollutant.
For achieving the above object, technical scheme of the present invention is as follows:
The hyperconcentration that lanolin extracts and centrifugation combination process, comprise the following steps:
Step one, multiple stage circulation washing wool: arrange multi-stage scour trough washery wool, wool is transported to last step scouring bowl from first step scouring bowl, and washing water are applied mechanically from last step scouring bowl to adverse current the scouring bowl of the second stage;
Step 2, ultrafiltration and concentration process: from the scouring bowl of the second stage, extract rich lanolated washing water enter into ultrafiltration and concentration pond, be provided with in ultrafiltration and concentration pond and rotate cross-flow ultrafiltration membrane rotating disk, ultrafiltration and concentration is carried out by rotating cross-flow ultrafiltration membrane rotating disk, concentrated solution enters into next step, and super water caught on a filter turns back to reuse in third stage scouring bowl by reflux pump;
Step 3, precipitation process: precipitate in settling pit from the concentrated solution in ultrafiltration and concentration pond, remove macrobead foreign material, then enter into next step;
Step 4, heat treated: heat in heating tank from the concentrated solution in settling pit, then enter next step;
Step 5, centrifugal treating: the concentrated solution after heating is carried out slag, water, oily three phase separation by three-phase centrifuge, oil phase flows out from three-phase centrifuge top, and aqueous phase turns back to third stage scouring bowl, and slag enters sludge treating system mutually.
In a preferred embodiment of the present invention, comprise further, rotation cross-flow ultrafiltration membrane rotating disk in step 2 in hyperconcentration pond, rotary motion realizes cross flow filter, rotates the surface of shearing force and the filtrate turbulent erosion cleaning ultra-filtration membrane produced in cross-flow ultrafiltration membrane turntable rotation process.
In a preferred embodiment of the present invention, comprise further, described rotation cross-flow ultrafiltration membrane rotating disk is provided with some ultra-filtration membranes, and described ultra-filtration membrane is flat organic polymer ultra-filtration membrane or flat inorganic filter membrane.
In a preferred embodiment of the present invention, comprise further, described flat organic polymer ultra-filtration membrane comprise following in one or more: PES, PVDF and PTFE.
In a preferred embodiment of the present invention, comprise further, the aperture of described ultra-filtration membrane is 0.01 ~ 0.05 μm.
In a preferred embodiment of the present invention, comprise further, the multiple stage circulation washing wool described in step one comprises the following steps:
The first step: in first step scouring bowl, carries out wool grease scouring with cold fresh water, removes large impurity, and Cleaning Wastewater is directly drained in Sewage treatment systems;
Second step: from the wool in first step scouring bowl in the scouring bowl of the second stage, then adds washing composition carry out degreasing washing from the hot water in third stage scouring bowl;
3rd step: from the wool in the scouring bowl of the second stage in third stage scouring bowl, add washing composition further degreasing washing from the hot water in fourth stage scouring bowl, the washing water adverse current of third stage scouring bowl enters into second stage scouring bowl;
4th step: from the wool in third stage scouring bowl in fourth stage scouring bowl, carries out rinsing by from the hot water in level V scouring bowl, and the washing water adverse current of fourth stage scouring bowl enters into third stage scouring bowl;
5th step: from the wool of fourth stage scouring bowl in level V scouring bowl, washed by the fresh hot water from boiler, the wool washing object for appreciation in level V scouring bowl enters into follow-up baking procedure, and the washing water adverse current of level V scouring bowl enters into fourth stage scouring bowl.
In a preferred embodiment of the present invention, comprise further, described first step scouring bowl, second stage scouring bowl, third stage scouring bowl, between fourth stage scouring bowl and level V scouring bowl, be equipped with wool e Foerderanlage and wiping arrangement.
In a preferred embodiment of the present invention, comprise further, precipitation process overshoot in step 3, the mud in settling pit is drained into sludge treating system.
The invention has the beneficial effects as follows:
The invention provides that a kind of extraction yield is high, running cost is low, the lanolin extracting method of simple and convenient operation and maintenance, the super worry adopting lanolin of the present invention to extract concentrates and centrifugation combination process, the rate of recovery of lanolin can be significantly improved, increase the cyclic utilization rate of washing water, save fresh water and washing composition, reduce quantity discharged and the Pollutant levels of waste water from washing wool, alleviate the load of follow-up sewage disposal.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, be briefly described to the accompanying drawing used required in the description of embodiment technology below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is method flow diagram of the present invention.
Wherein, 1-first step scouring bowl, 2-second stage scouring bowl, 3-third stage scouring bowl, 4-fourth stage scouring bowl, 5-level V scouring bowl, 6-ultrafiltration and concentration pond, 7-reflux pump, 8-settling pit, 9-settling pit liquidometer, 10-heating tank, 11-heating tank liquidometer, 12-three-phase centrifuge.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
As shown in Figure 1, disclose hyperconcentration and the centrifugation combination process of lanolin extraction in the present embodiment, it is characterized in that, comprise the following steps:
Step one, multiple stage circulation washing wool: arrange multi-stage scour trough washery wool, wool is transported to last step scouring bowl from first step scouring bowl 1, and washing water are applied mechanically from last step scouring bowl to adverse current second stage scouring bowl 2.
Step 2, ultrafiltration and concentration process: from second stage scouring bowl 2, extract rich lanolated washing water enter into ultrafiltration and concentration pond 6, be provided with in ultrafiltration and concentration pond 6 and rotate cross-flow ultrafiltration membrane rotating disk, ultrafiltration and concentration is carried out by rotating cross-flow ultrafiltration membrane rotating disk, concentrated solution enters into next step, and super water caught on a filter turns back to reuse in third stage scouring bowl by reflux pump 7.
Step 3, precipitation process: precipitate in settling pit 8 from the concentrated solution in ultrafiltration and concentration pond 6, remove macrobead foreign material, then enter into next step, the mud in settling pit 8 is regularly drained into sludge treating system.In order to control the liquid measure in settling pit 8, settling pit liquidometer 9 is set in above-mentioned settling pit 8.
Step 4, heat treated: heat in heating tank 10 from the concentrated solution in settling pit 8, then enter next step.In order to control the liquid measure in heating tank 10, heating tank liquidometer 11 is set in heating tank 10.
Step 5, centrifugal treating: the concentrated solution after heating is carried out slag, water, oily three phase separation by three-phase centrifuge 12, oil phase flows out from three-phase centrifuge 12 top, and aqueous phase turns back to third stage scouring bowl 3, and slag enters sludge treating system mutually.
To rotate cross-flow ultrafiltration membrane rotating disk for concentrated means in the present embodiment, with the second wash water in wool-cleaning technology flow process for ultrafiltration and concentration object, a kind of novel method be attached to by ultra-filtration technique in traditional wool-cleaning technology is proposed, significantly can increase the rate of recovery of lanolin, improve the reusing rate that scouring of wool is produced, reduce the quantity discharged of waste water from washing wool and organic pollutant.
Therefore, rotating cross-flow ultrafiltration membrane rotating disk is one of key problem in technology of the present embodiment technique, rotation cross-flow ultrafiltration membrane rotating disk early in step 2 in hyperconcentration pond, the program control rotating operation of immersion is adopted to realize cross flow filter, and rely on the shearing force and filtrate turbulent erosion cleaning film surface that produce in film turntable rotation process, can prevent film from blocking without the need to aeration and back flushing.
Above-mentioned rotation cross-flow ultrafiltration membrane rotating disk is provided with some ultra-filtration membranes, and above-mentioned ultra-filtration membrane is flat organic polymer ultra-filtration membrane or flat inorganic filter membrane.Wherein above-mentioned flat organic polymer ultra-filtration membrane comprise following in any one: PES, PVDF and PTFE; The aperture of above-mentioned ultra-filtration membrane is 0.01 ~ 0.05 μm.
Multiple stage circulation washing wool above-mentioned in step one comprises the following steps:
The first step: in first step scouring bowl 1, carries out wool grease scouring with cold fresh water, removes large impurity, and Cleaning Wastewater is directly drained in Sewage treatment systems.
Second step: from the wool in first step scouring bowl 1 in second stage scouring bowl 2, then adds washing composition carry out degreasing washing from the hot water in third stage scouring bowl 3.
3rd step: from the wool in second stage scouring bowl 2 in third stage scouring bowl 3, add washing composition further degreasing washing from the hot water in fourth stage scouring bowl 4, the washing water adverse current of third stage scouring bowl 3 enters into second stage scouring bowl 2.
4th step: from the wool in third stage scouring bowl 3 in fourth stage scouring bowl 4, carries out rinsing by from the hot water in level V scouring bowl 5, and the washing water adverse current of fourth stage scouring bowl 4 enters into third stage scouring bowl 3.
5th step: from the wool of fourth stage scouring bowl 4 in level V scouring bowl 5, washed by the fresh hot water from boiler, the wool washing object for appreciation in level V scouring bowl 5 enters into follow-up baking procedure, and the washing water adverse current of level V scouring bowl 5 enters into fourth stage scouring bowl 4.
Above-mentioned first step scouring bowl 1, second stage scouring bowl 2, third stage scouring bowl 3, between fourth stage scouring bowl 4 and level V scouring bowl 5, be equipped with wool e Foerderanlage and wiping arrangement.
Embodiment 2
Embodiment 2, with the processing method in embodiment 1, carries out industrial applications in actual wool washing factory.In ultrafiltration and concentration pond, install a set of rotation cross-flow ultrafiltration membrane be separated rotating disk, load the PES ultrafiltration diaphragm of 0.04 μm, ultra-filtration membrane area is 300m
2.
Adopt submersible sewage pump from the scouring bowl of the second stage with 6.0m
3the flow of/h extracts washing water in ultrafiltration and concentration pond, keeps 3m
3concentrated solution is delivered to follow-up desilting, heating and is centrifugally put forward oily operation by the flow of/h, and ultra-filtration water is with 3.0m
3the flow of/h turns back to third stage scouring bowl by reflux pump.Ultrafiltration and concentration liquid carries out after slag, water, oily three phase separation through three-phase centrifuge, and oil phase flows out from whizzer top and barrelling is reclaimed, and aqueous phase turns back to 3# scouring bowl, and slag enters sludge treating system mutually.
In the present embodiment, enter the ultrafiltration and concentration liquid of three-phase centrifuge, lanolin content brings up to about 38.0g/L from implementing the average 17.5g/L of conventional centrifugal oil extracting process before ultrafiltration and concentration.Because washing water enter the amount of three-phase centrifuge by 6.0m
3/ h is reduced to 3.0m
3/ h, and the concentration of lanolin doubles many, centrifugally puies forward oily efficiency and significantly increases, and be increased to 48kg/h by the 45kg/h of traditional technology, the lanolin rate of recovery increases by 86.7%, and economic benefit is very considerable.Rotate cross-flow ultrafiltration membrane rotating disk not block, operation conditions is stablized, and ultra-filtration water is limpid transparent, and soil removability is strong, after turning back to third stage scouring bowl, improves the repeating utilization factor of washing water.Especially the increase of the lanolin rate of recovery, greatly reduces the COD concentration of waste water from washing wool, and follow-up sewage treatment load is significantly alleviated, and lays a good foundation for waste water from washing wool realizes stably reaching standard discharge.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. lanolin extract hyperconcentration and centrifugation combination process, it is characterized in that, comprise the following steps:
Step one, multiple stage circulation washing wool: arrange multi-stage scour trough washery wool, wool is transported to last step scouring bowl from first step scouring bowl, and washing water are applied mechanically from last step scouring bowl to adverse current the scouring bowl of the second stage;
Step 2, ultrafiltration and concentration process: from the scouring bowl of the second stage, extract rich lanolated washing water enter into ultrafiltration and concentration pond, be provided with in ultrafiltration and concentration pond and rotate cross-flow ultrafiltration membrane rotating disk, ultrafiltration and concentration is carried out by rotating cross-flow ultrafiltration membrane rotating disk, concentrated solution enters into next step, and super water caught on a filter turns back to reuse in third stage scouring bowl by reflux pump;
Step 3, precipitation process: precipitate in settling pit from the concentrated solution in ultrafiltration and concentration pond, remove macrobead foreign material, then enter into next step;
Step 4, heat treated: heat in heating tank from the concentrated solution in settling pit, then enter next step;
Step 5, centrifugal treating: the concentrated solution after heating is carried out slag, water, oily three phase separation by three-phase centrifuge, oil phase flows out from three-phase centrifuge top, and aqueous phase turns back to third stage scouring bowl, and slag enters sludge treating system mutually.
2. the lanolin according to claim 1 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, rotation cross-flow ultrafiltration membrane rotating disk in step 2 in hyperconcentration pond, rotary motion realizes cross flow filter, rotates the surface of shearing force and the filtrate turbulent erosion cleaning ultra-filtration membrane produced in cross-flow ultrafiltration membrane turntable rotation process.
3. the lanolin according to claim 2 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, described rotation cross-flow ultrafiltration membrane rotating disk is provided with some ultra-filtration membranes, and described ultra-filtration membrane is flat organic polymer ultra-filtration membrane or flat inorganic filter membrane.
4. the lanolin according to claim 3 hyperconcentration of extracting and centrifugation combination process, is characterized in that, described flat organic polymer ultra-filtration membrane comprise following in one or more: PES, PVDF and PTFE.
5. the lanolin according to claim 4 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, the aperture of described ultra-filtration membrane is 0.01 ~ 0.05 μm.
6. the lanolin according to claim 1 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, the multiple stage circulation described in step one washs wool and comprises the following steps:
The first step: in first step scouring bowl, carries out wool grease scouring with cold fresh water, removes large impurity, and Cleaning Wastewater is directly drained in Sewage treatment systems;
Second step: from the wool in first step scouring bowl in the scouring bowl of the second stage, then adds washing composition carry out degreasing washing from the hot water in third stage scouring bowl;
3rd step: from the wool in the scouring bowl of the second stage in third stage scouring bowl, add washing composition further degreasing washing from the hot water in fourth stage scouring bowl, the washing water adverse current of third stage scouring bowl enters into second stage scouring bowl;
4th step: from the wool in third stage scouring bowl in fourth stage scouring bowl, carries out rinsing by from the hot water in level V scouring bowl, and the washing water adverse current of fourth stage scouring bowl enters into third stage scouring bowl;
5th step: from the wool of fourth stage scouring bowl in level V scouring bowl, washed by the fresh hot water from boiler, the wool washing object for appreciation in level V scouring bowl enters into follow-up baking procedure, and the washing water adverse current of level V scouring bowl enters into fourth stage scouring bowl.
7. the lanolin according to claim 6 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, described first step scouring bowl, second stage scouring bowl, third stage scouring bowl, between fourth stage scouring bowl and level V scouring bowl, be equipped with wool e Foerderanlage and wiping arrangement.
8. the lanolin according to claim 1 hyperconcentration of extracting and centrifugation combination process, it is characterized in that, precipitation process overshoot in step 3, the mud in settling pit is drained into sludge treating system.
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| CN201510261285.9A CN104860463B (en) | 2015-05-21 | 2015-05-21 | Ultrafiltration concentration and centrifugal separation combined process for lanolin extraction |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295700A (en) * | 1976-02-05 | 1977-08-11 | Woolcombers Ltd | Improvement of lanolin and production of lanolin with particurally reduce allergic property |
| CN1056522A (en) * | 1991-05-16 | 1991-11-27 | 江西省环境保护科学研究所 | From waste water from washing wool, reclaim the method for lanolin |
-
2015
- 2015-05-21 CN CN201510261285.9A patent/CN104860463B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295700A (en) * | 1976-02-05 | 1977-08-11 | Woolcombers Ltd | Improvement of lanolin and production of lanolin with particurally reduce allergic property |
| CN1056522A (en) * | 1991-05-16 | 1991-11-27 | 江西省环境保护科学研究所 | From waste water from washing wool, reclaim the method for lanolin |
Non-Patent Citations (1)
| Title |
|---|
| 耿安朝 等: "超滤技术浓缩回收羊毛脂及废水处理", 《上海纺织科技》 * |
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Address after: 215010 Room 102, building 15, No.158, Jinfeng Road, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Menghai Water Technology Co., Ltd Address before: 215153, No. 158, Jinsha River Road, hi tech Zone, Jiangsu, Suzhou Patentee before: SUZHOU MOHAI SEPARATION TECHNOLOGY Co.,Ltd. |