CN102764515B - Drying method and drying device of anionic surfactant - Google Patents
Drying method and drying device of anionic surfactant Download PDFInfo
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- CN102764515B CN102764515B CN201210248986.5A CN201210248986A CN102764515B CN 102764515 B CN102764515 B CN 102764515B CN 201210248986 A CN201210248986 A CN 201210248986A CN 102764515 B CN102764515 B CN 102764515B
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Abstract
The invention discloses a drying method of anionic surfactant and a drying device of the anionic surfactant, specifically aiming at dodecyl ammonium sulfate. The drying method comprises the steps of preheating 60%-80% of a pasty material of the dodecyl ammonium sulfate to 50-90 DEG C by a preheating heat exchanger, conveying to a thin-film evaporator through a conveying pump to evaporate and dry, conveying dried material slurry discharged from the thin-film evaporator into a tablet pressing machine to form irregular tablets, filtering by a cyclone spiral conveyer and then conveying to process into a powdered material or a needle-like material as needed, and putting the material into a material storeroom to carry out packaging. The method and device provided by the invention have the advantages of preheating the pasty material of the anionic surfactant, drying by the thin-film evaporator, drying efficiently by the minimum temperature difference between a heating medium and the technique product, achieving short retention time, high uniformity and high dryness, operating the device easily and achieving optimized heat energy consumption.
Description
Technical field
The present invention relates to a kind of drying means and equipment thereof of anion surfactant, be particularly conducive to the ammonium lauryl sulfate salt of paste to be dried and to make powdery or needle-like finished product.Belong to plaster material technical field of drying.
Background technology
Ammonium lauryl sulfate salt is a kind of good anion surfactant, there is good detergency, anti-hard water, lower excitant, higher foaming power and excellent compatibility, a large amount of is applied in the personal care products such as toothpaste, shampoo, shower cream, is particularly suitable for preparing low pH value product.The anion surfactant finished products such as existing ammonium lauryl sulfate salt are paste slip, inconvenient in production and transport, easily leak, and need to adopt special container containing, have strengthened the production cost of manufacturing enterprise.Increasing manufacturing enterprise set about the beginning one's study production and transport problem of the ammonium lauryl sulfate salt that how to solve paste.Have no at present the drying means of ammonium lauryl sulfate salt and the report of equipment.
Summary of the invention
The invention provides a kind of drying means of anion surfactant, by method of the present invention, paste anion surfactant slip highly effective drying can be become to solid shape, be convenient to production and transport.
Another object of the present invention also provides a kind of drying equipment of dry anion surfactant simultaneously.
Comprising the following steps of the drying means of anion surfactant: the anion surfactant plaster material that is 60%-80% by solid content is preheated to 50 ℃-90 ℃, or temperature has been reached to the anion surfactant plaster material of 50 ℃-90 ℃, send into luwa evaporator and carry out evaporation drying, dried material rolls sheet, cooling by pair roller type flaking machine rapidly, collects the material of slabbing; The temperature of described luwa evaporator is arranged on 50 ℃-110 ℃, and vacuum is 0.05MPa-0.2Mpa; Described one of them roller of pair roller type flaking machine is low temperature roller, temperature is controlled at 0 ℃-25 ℃, and for attaching the material after collection cool drying, another roller is high temperature roller, temperature is controlled at 30 ℃-100 ℃, is convenient to separate dried material described in pressure rolling.
From the dry evaporant out of described scraped finish evaporator evaporation, comprise water, dust and anion surfactant droplet, described evaporant is isolated to anion surfactant droplet by washing, more described droplet is collected to recycling after separating and filtering.
The sheet that described flaking machine is collected is dried anion surfactant pulverize finished product or packs by being extruded as needle-like finished product.
Described anion surfactant lauryl sulfate, linear alkylbenzene sulfonate (LAS), AOS or sodium soap salt anionic surfactant.
Described anion surfactant is ammonium lauryl sulfate salt.
A kind of equipment for dry anion surfactant, comprise storage tank, delivery pump, preheating heat exchanger, luwa evaporator, flaking machine and cooling device, between described storage tank, delivery pump, luwa evaporator, by pipeline, connect successively, on the pipeline being connected between described luwa evaporator and delivery pump, be provided with the pipeline of preheating heat exchanger; The bottom of described luwa evaporator is provided with the hopper being connected with flaking machine, and described flaking machine is lowered the temperature by described cooling device.
The bottom of described flaking machine connects the first cyclone separator by conveying worm, and the bottom of the first cyclone separator is dried material outlet.
Between described luwa evaporator of the present invention and delivery pump, be also communicated with a direct piping, on pipeline without preheating heat exchanger is set.
Described equipment also comprises evaporating, and described evaporating is comprised of air exhauster, the second cyclone separator and scrubbing tower; Described scrubbing tower one side is connected with luwa evaporator, and opposite side connects the second cyclone separator, and described air exhauster pumps the evaporant in luwa evaporator to scrubbing tower and the second cyclone separator.
Described flaking machine is pair roller type flaking machine, one of them roller of flaking machine, and low temperature roller is lowered the temperature by cooling device.
Described cooling device comprises cooling heat exchanger and centrifugal pump, and described centrifugal pump is delivered to cooling medium by pipeline the low temperature roller inside of flaking machine, and on pipeline, parcel is provided with cooling heat exchanger.Described cooling medium is water.
In another roller (being high temperature roller) of described flaking machine, be provided with heating heat exchanger; Temperature can be controlled to 30 ℃-100 ℃, can make dried material can not stick on this roller, thereby so that separate dried material described in pressure rolling; By another low temperature roller, collected.
The bottom of described flaking machine is provided with the conveying worm being connected with rotary valve entrance, and the outlet of described rotary valve is connected with the entrance of the first cyclone separator by blower fan, pipeline.
Method of the present invention is that the anion surfactant plaster material of storage tank is pumped to luwa evaporator top, if the temperature of charge of just having produced reaches 50 ℃-90 ℃, can directly by direct piping, send into luwa evaporator, if material has been cooled to below 50 ℃, after being preheated to 50 ℃-90 ℃ by preheating heat exchanger, send into luwa evaporator, thereby guarantee that by the Effective Regulation of above two kinds of approach material of the present invention can the less temperature difference can concentrate efficiently; Material carries out evaporation drying after entering luwa evaporator in the temperature range of 50 ℃-110 ℃, at the required heat of luwa evaporator inner drying process, by heat transfer wall, is provided, and heat medium does not directly contact with material.Due to anion surfactant, as ammonium lauryl sulfate salt non-refractory, can, by keeping the vacuum of the inner 0.05MPa-0.2MPa of luwa evaporator, reduce in right amount baking temperature, guarantee the chemical characteristic of material.When the moisture in material and other impurity are evaporated at luwa evaporator, from luwa evaporator bottom, discharge continuously dried material and can directly pass through hopper, enter rapidly pair roller type flaking machine and roll sheet, cooling.In pair roller flaking machine, inventor also by adopt centrifugal pump continuously to the inner surface of low temperature roller (being generally the large roller of pair roller flaking machine) for the cooling water of 0 ℃-25 ℃ (if summer cooling water higher than this numerical value, should in cooling heat exchanger, use the chilled water it is cooling), thus the material from luwa evaporator heat drying out can be carried out to cooling down when the flaking machine simultaneously and roll the double effects of sheet; In addition, for the convenient material rolling after sheet of collecting, inventor sends into temperature that heating heat exchanger or equipment boiler afterheat provide at the hot water of 30 ℃-100 ℃ by design continuously to high temperature roller (being generally the little roller of the pair roller type flaking machine) inner surface of pair roller type flaking machine, by two cold heat of roller one, carries out pressure rolling.By above inventor, process especially, dried material finally attaches in low temperature rollers outer surface, and cooling and dried material is scraped by the scraper plate in flaking machine, forms irregular tablet.
Sheet material is discharged to enter from the hopper of flaking machine by conveying worm and is delivered to cyclone separator, and course of conveying adopts pneumatic low-pressure delivery, can not improve the temperature of sheet material.In the first cyclone separator, sheet material can be made sheet material powdery or by extruder, be made needle-like and send into finished bin by centrifugal mill as required after filtering.
As produce powdery finished product, centrifugal mill and all equipment relevant with abrasive dust all need operate under nitrogen strip of paper used for sealing part.As production needle-like, extruder configuration double helix stainless steel needle-like thing extruder, spicule diameter can be 1.2mm-1.5mm, length 3mm-5mm.
The activity paddle that a series of subsidiary bracing frame is installed on the rotating shaft of the luwa evaporator adopting in the present invention can make the anion surfactant material entering be uniformly distributed along the whole width of evaporimeter, wipe material dry on barrel off simultaneously, material distributes very narrow at the residence time of evaporimeter, reduced the overheated possibility of part or point-like, improve end product quality, can also be according to the water content of plaster material import/export, can different operating temperatures be set to each section of cooling jacket of luwa evaporator, there is optimized energy consumption.The evaporant being evaporated by luwa evaporator comprises water, dust and organic matter droplet, sucks to go out to anhydrate after scrubbing tower and the impurity such as dust, then after the second cyclone separator separates, remaining organic matter in evaporant is recycled by air exhauster.
Above method is also specially adapted to the production of ammonium lauryl sulfate salt, after dry, the dry thing content of the finished product of ammonium lauryl sulfate salt is higher than 95%, finished product more can be processed into sheet, powdery or needle-like, can be according to client's the product that need to produce various difformities, different content.
The method and apparatus of dry anion surfactant of the present invention above, carries out highly effective drying and rolls sheet and collect with the temperature difference minimum between heat medium and handicraft product, and equipment easy operating has the good result of optimized heat exhaustion.Effective combination that the present invention carries out scraped film type evaporation after by preheating and pair roller type rolls the technology and equipments such as sheet, thus realize highly effective drying and the moulding from anion surfactant from paste slip to solid shape finished product.Above technology and equipment is also that inventor is through repeatedly attempting and testing, and the scheme obtaining behind failed basis many times, go for equally other for example linear alkylbenzene sulfonate (LAS), AOS or sodium soap salt anionic surfactants, can realize the mass production of anion surfactant finished product.
Accompanying drawing explanation
Fig. 1 is the device structure schematic diagram of dry ammonium lauryl sulfate salt.
Number in the figure: 1-storage tank, 2-preheating heat exchanger, 3-delivery pump, 4-air exhauster, 5-luwa evaporator, 6-hopper, 7-flaking machine, 8-centrifugal pump, 9-cooling heat exchanger, 10-cooling water collecting tank, 11-conveying worm, 12-flaking machine hopper, 13-scrubbing tower, 14-the second cyclone separator, 15-heating heat exchanger, 16-rotary valve, 17-blower fan, 18-the first cyclone separator, 19-extruder, 20-centrifugal mill, 21-finished bin.
The all devices using in the present invention is all conventional uses, can buy from domestic or international market.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention will be further described.
Referring to the equipment in Fig. 1, between storage tank 1, delivery pump 3, luwa evaporator 5, by pipeline, connect successively, preheating heat exchanger 2 carries out preheating to plaster material mobile in the pipeline between luwa evaporator 5 and delivery pump 3, is separately also provided with a direct piping heating without preheating heat exchanger 2 between scraped finish evaporimeter 5 and delivery pump 3; The bottom of luwa evaporator 5 is connected with flaking machine 7 by hopper 6; The bottom of flaking machine 7 is provided with conveying worm 11, and conveying worm 11 leads to rotary valve 16, and rotary valve 16 is communicated to the first cyclone separator 18, between rotary valve 16 and the first cyclone separator 18, is provided with blower fan 17.The bottom of the first cyclone separator 18 connects finished bin 21 by centrifugal mill 20 or extruder 19.
On luwa evaporator 5 sides, be provided with scrubbing tower 13, scrubbing tower 13 1 sides are connected with luwa evaporator 5, and opposite side connects the second cyclone separator 14, and air exhauster 4 pumps the evaporant in luwa evaporator 5 to scrubbing tower 13 and the second cyclone separator 14.
Flaking machine 7 is pair roller type flaking machine, comprises small one and large one two roller pair rollers, and large roller is low temperature roller, and centrifugal pump 8 is delivered to low temperature roller inside by water pipe by the cooling water in cooling water collecting tank 10, and on water pipe, parcel is provided with cooling heat exchanger 9.
The little roller of flaking machine 7 is high temperature roller, and high temperature roller is inner by heating heat exchanger 15 delivering hot waters or Boiler Steam heating.
Embodiment 1
By ammonium lauryl sulfate salt slip, temperature is about 45 ℃, solid content approximately 60%, by being preheated to 60 ℃ in preheating heat exchanger 2, by delivery pump 3, be pumped to luwa evaporator 5 tops, 110 ℃ of luwa evaporator 5 ground floor temperature, 105 ℃ of second layer temperature, 100 ℃ of the 3rd layer of temperature, 95 ℃ of the 4th layer of temperature, controlling luwa evaporator 5 vacuums is 0.2MPa, the temperature of two rollers of flaking machine 7, large roller inner surface cooling medium without interruption, temperature is 20 ℃, the sub-inner surface of pony roll hot water without interruption, temperature is controlled at 80 ℃, tablet is sent to centrifugal mill 20 and produces powdery ammonium lauryl sulfate salt, finished product water content 5%.
Embodiment 2
By ammonium lauryl sulfate salt slip, temperature is about 45 ℃, solid content approximately 65%, by being preheated to 70 ℃ in preheating heat exchanger 2, by delivery pump 3, be pumped to luwa evaporator 5 tops, 105 ℃ of luwa evaporator 5 ground floor temperature, 100 ℃ of second layer temperature, 100 ℃ of the 3rd layer of temperature, 95 ℃ of the 4th layer of temperature, controlling luwa evaporator 5 vacuums is 0.15MPa, the temperature of two rollers of flaking machine 7, large roller inner surface cooling medium without interruption, temperature is 20 ℃, the sub-inner surface of pony roll hot water without interruption, temperature is controlled at 100 ℃, tablet is sent to centrifugal mill 20 and produces powdery ammonium lauryl sulfate salt, finished product water content 4.2%.
Embodiment 3
By ammonium lauryl sulfate salt slip, temperature is about 45 ℃, solid content approximately 70%, by being preheated to 75 ℃ in preheating heat exchanger 2, by delivery pump 3, be pumped to luwa evaporator 5 tops, 110 ℃ of luwa evaporator 5 ground floor temperature, 105 ℃ of second layer temperature, 100 ℃ of the 3rd layer of temperature, 95 ℃ of the 4th layer of temperature, controlling luwa evaporator 5 vacuums is 0.10MPa, the temperature of two rollers of flaking machine 7, large roller inner surface cooling medium without interruption, temperature is 20 ℃, the sub-inner surface of pony roll hot water without interruption, temperature is controlled at 75 ℃, tablet is sent to centrifugal mill 20 and produces powdery ammonium lauryl sulfate salt, finished product water content 3.8%.
Embodiment 4
By ammonium lauryl sulfate salt slip, temperature is about 45 ℃, solid content approximately 72%, by being preheated to 80 ℃ in preheating heat exchanger 2, by delivery pump 3, be pumped to luwa evaporator 5 tops, 110 ℃ of luwa evaporator 5 ground floor temperature, 105 ℃ of second layer temperature, 100 ℃ of the 3rd layer of temperature, 95 ℃ of the 4th layer of temperature, controlling luwa evaporator 5 vacuums is 0.08MPa, the temperature of two rollers of flaking machine 7, large roller inner surface cooling medium without interruption, temperature is answered 20 ℃, the sub-inner surface of pony roll hot water without interruption, temperature is controlled at 70 ℃, tablet is sent to extruder 19 production needle-like ammonium lauryl sulfate salt, finished product water content 3.5%, diameter 1.2-1.5mm, length 3-5mm.
Embodiment 5
By ammonium lauryl sulfate salt slip, temperature is about 45 ℃, solid content approximately 75%, by being preheated to 80 ℃ in preheating heat exchanger 2, by delivery pump 3, be pumped to luwa evaporator 5 tops, 110 ℃ of luwa evaporator 5 ground floor temperature, 105 ℃ of second layer temperature, 100 ℃ of the 3rd layer of temperature, 95 ℃ of the 4th layer of temperature, controlling luwa evaporator 5 vacuums is 0.05MPa, the temperature of two rollers of flaking machine 7, large roller inner surface cooling medium without interruption, temperature is 20 ℃, the sub-inner surface of pony roll hot water without interruption, temperature is controlled at 90 ℃, tablet is sent to centrifugal mill 20 and produces powdery ammonium lauryl sulfate salt, finished product water content 3%.
Embodiment 6
By ammonium lauryl sulfate salt slip, temperature is about 60 ℃, and solid content approximately 75% does not need preheating directly to enter luwa evaporator 5 by the direct piping between luwa evaporator 5 and delivery pump 3, other step is identical with embodiment 5, the finished product water content 4.0% of production.
Claims (13)
1. the drying means of an anion surfactant, it is characterized in that: the anion surfactant plaster material that is 60%-80% by solid content is preheated to 50 ℃-90 ℃, or temperature has been reached to the anion surfactant plaster material of 50 ℃-90 ℃, send into luwa evaporator and carry out evaporation drying, dried material rolls sheet, cooling by pair roller type flaking machine rapidly, collects the material of slabbing; The temperature of described luwa evaporator is arranged on 50 ℃-110 ℃, and vacuum is 0.05MPa-0.2MPa; Described one of them roller of pair roller type flaking machine is low temperature roller, temperature is controlled at 0 ℃-25 ℃, and for attaching the material after collection cool drying, another roller is high temperature roller, temperature is controlled at 30 ℃-100 ℃, is convenient to separate dried material described in pressure rolling.
2. a kind of method according to claim 1, it is characterized in that: from described luwa evaporator evaporation drying evaporant out, comprise water, dust and anion surfactant droplet, described evaporant is isolated to anion surfactant droplet by washing, more described droplet is collected to utilization after separating and filtering.
3. a kind of method according to claim 2, is characterized in that: the sheet that described flaking machine is collected is dried anion surfactant pulverize finished product or packs by being extruded as needle-like finished product.
4. according to the method described in claim 1-3 any one, it is characterized in that: described anion surfactant is lauryl sulfate, linear alkylbenzene sulfonate (LAS), AOS or sodium soap salt anionic surfactant.
5. method according to claim 4, is characterized in that: described anion surfactant is ammonium lauryl sulfate salt.
6. the equipment for dry anion surfactant, it is characterized in that: comprise storage tank, delivery pump, preheating heat exchanger, luwa evaporator, flaking machine and cooling device, between described storage tank, delivery pump, luwa evaporator, by pipeline, connect successively, on the pipeline being connected between described luwa evaporator and delivery pump, be provided with preheating heat exchanger; The bottom of described luwa evaporator is provided with the hopper being connected with flaking machine, and described flaking machine is lowered the temperature by described cooling device.
7. a kind of equipment according to claim 6, is characterized in that: the bottom of described flaking machine connects the first cyclone separator by conveying worm, and the bottom of the first cyclone separator is the outlet of dry anion surfactant.
8. a kind of equipment according to claim 6, is characterized in that: described equipment also comprises evaporating, described evaporating is comprised of air exhauster, the second cyclone separator and scrubbing tower; Described scrubbing tower one side is connected with luwa evaporator, and opposite side connects the second cyclone separator, and described air exhauster pumps the evaporant in luwa evaporator to scrubbing tower and the second cyclone separator.
9. a kind of equipment according to claim 6, is characterized in that: described flaking machine is pair roller type flaking machine, and one of them roller of flaking machine is lowered the temperature by cooling device.
10. a kind of equipment according to claim 9, it is characterized in that: described cooling device comprises cooling heat exchanger and centrifugal pump, described centrifugal pump is delivered to cooling medium by pipeline the low temperature roller inside of flaking machine, and on pipeline, parcel is provided with cooling heat exchanger.
11. a kind of equipment according to claim 10, is characterized in that: described cooling medium is water.
12. a kind of equipment according to claim 9, is characterized in that: in another roller of described flaking machine, be provided with heating heat exchanger.
13. according to a kind of equipment described in claim 6-12 any one, it is characterized in that: between described luwa evaporator and delivery pump, be also connected a direct piping.
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| CN201210248986.5A CN102764515B (en) | 2012-07-18 | 2012-07-18 | Drying method and drying device of anionic surfactant |
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| CN105413210B (en) * | 2015-12-30 | 2017-05-17 | 江苏丰益化工科技有限公司 | Drying device used for powdery surfactant and drying method |
| CN107014159B (en) * | 2017-04-21 | 2019-09-17 | 江苏丰益化工科技有限公司 | A kind of drying equipment and method for lauryl sodium sulfate |
| CN117282114B (en) * | 2023-11-27 | 2024-03-12 | 常州润凯干燥科技有限公司 | Environment-friendly mother liquor drying equipment based on material structure is scraped to cylinder |
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| CA2111297A1 (en) * | 1992-12-21 | 1994-06-22 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| GB9417354D0 (en) * | 1994-08-26 | 1994-10-19 | Unilever Plc | Detergent particles and process for their production |
| JPH11172294A (en) * | 1997-12-06 | 1999-06-29 | Lion Corp | Production of concentrated and dried surfactant |
| JP4917224B2 (en) * | 2001-09-28 | 2012-04-18 | ライオン株式会社 | Method for producing granular detergent composition |
| CN100522935C (en) * | 2007-06-22 | 2009-08-05 | 李宏才 | Production of alpha-sulfofatty acid salt |
| CN202822817U (en) * | 2012-07-18 | 2013-03-27 | 湖南丽臣实业股份有限公司 | Drying equipment of anionic surfactant |
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Application publication date: 20121107 Assignee: Shanghai Aowei Chemical Co. Ltd. Assignor: Hu'nan Licheng Industrial Co., Ltd. Contract record no.: 2015430000060 Denomination of invention: Drying method and drying device of anionic surfactant Granted publication date: 20140416 License type: Exclusive License Record date: 20150529 |
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Effective date of registration: 20160803 Address after: 201512 No. 6388 Jinshan Road, Shanghai, Jinshan District Patentee after: Shanghai Aowei Chemical Co. Ltd. Address before: 410003 Hunan province Changsha Kaifu District, Liuyang River Road No. 1 Patentee before: Hu'nan Licheng Industrial Co., Ltd. |