CN1351247A - Spray drying tower and processor drying alpha-ensulfonate - Google Patents
Spray drying tower and processor drying alpha-ensulfonate Download PDFInfo
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- CN1351247A CN1351247A CN 00131365 CN00131365A CN1351247A CN 1351247 A CN1351247 A CN 1351247A CN 00131365 CN00131365 CN 00131365 CN 00131365 A CN00131365 A CN 00131365A CN 1351247 A CN1351247 A CN 1351247A
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Abstract
A spray drying tower features that it contains the unit for generating wind flowing along the inner surface and playing the cleaning role, and the tower wall cooler to provent the product from being adhered to its inner surface and make cleaning easy. A process for drying AOS product with said spray drying tower is also disclosed. Its advantages are less investment and high drying efficiency.
Description
The present invention relates to a kind of drying process that Chemicals are dried to the particulate drying plant and utilize the dry α-Xi Jihuangsuanyan of this spraying equipment from solution.
The head product that many Chemicals are produced is liquid product, generally is dried into particulate state by spraying drying.But for Chemicals as tensio-active agent one class, product has adsorptivity, in spray-drying process, very easily produce wall sticking phenomenon, because the sticking wall of product, make the particularly long-time decomposes of heat-sensitive material of product, etching apparatus, the continuous production time shortens, and loss increases, and production cost increases, simultaneously common spray drying device is comparatively huge, cleans comparatively difficulty.
α-Xi Jihuangsuanyan (being called for short AOS) is a kind of anion surfactant, gets liquid product by sulfonation, hydrolysis in the industrial production.Greater than after more than 35%, product viscosity begins to rise the AOS product at activity concentration, and concentration is greater than 40%, and product forms gel, is difficult to store use; Also there is the low-temperature stratification gel in 35% liquid product, awkward problem simultaneously.Therefore, wish liquid product is dried to powder-like product, improve product stability, reduce transportation cost.
What the drying process of external AOS product was comparatively advanced is the turbulent flow drying process of U.S. Kai Misong (CHEMITHON) company and the vacuum knifing drying process of Italian ballas song (BALLESTRA) company, investment is big, the unsettled shortcoming of technology but these two kinds of methods all exist, and promotes difficulty in China.
The object of the present invention is to provide a kind of spray-drying tower, this spray-drying tower is difficult for producing the product wall sticking phenomenon in drying process, and it is convenient to clean.
Another object of the present invention is to provide a kind of technology of utilizing the dry AOS product of above-mentioned spray-drying tower, this technology investment is little, drying efficiency is high.
Technical scheme of the present invention is:
A kind of spray-drying tower comprises tower body, and tower body top has spraying gun, and spraying gun can be pressure atomizer or centrifugal atomizer; The tower body top has rotation wind sparger, and hot blast enters in the tower by rotation wind sparger; Tower body top also is provided with the suitable wall wind inlet that has along wall wind sparger, over against being provided with baffle plate along wall wind ingress, makes along wall wind to descend along wall; The tower body middle portion is provided with the cooling air clamping device, and the cooling air import is in the clamping device lower end, and cooling air outlet cools off the tower wall by cooling air is mobile from lower to upper in the chuck upper end; Tower body bottom band conical lower portion, the upper end diameter of conical lower portion are greater than tower diameter, and its bulge branch is provided with and has the purging wind inlet that purges the wind sparger, purges wind and jointly tower body taper position inwall is cleaned along wall wind.
The periphery of conical lower portion also is provided with vibration hammer.
The drying process of α-Xi Jihuangsuanyan is: with activity concentration is that the AOS product of 30%-40% enters above-mentioned spray-drying tower after metering, by spraying with tiny droplet behind the spraying gun, being used for the exsiccant hot blast temperature is 150-450 ℃, and divide two the tunnel to enter spray-drying tower, one road top from the spray tower forms rotation wind through rotation wind sparger, one the road from forming along wall wind along wall wind sparger, along the wind speed of wall wind for the 4-5 of the wind speed of rotation wind doubly, air outlet temperature is 90-105 ℃; Contact afterwards instantaneous moisture content the drop is gasified with hot blast from the droplet of spraying gun ejection and form fine particle, fine particle enters cyclonic separator and air separation after with the wind at the bottom of the tower, introduce aging, the cooling of boiling aging equipment, form exsiccant AOS hollow bead, pack, go out finished product.
Owing to improved the structure of spray-drying tower, made the product of easily sticking wall to carry out drying by spray-drying process.Along the existence of wall wind, reduce the sticking wall of flying upward of product in the tower, prolonged the spray-dired time, improved the yield of product.The spray inner wall of tower has adopted the cooling air cooling, prevents that further the sticking wall of product from decomposing.Cooling air purges wind and enters the tower body tapering from can be used as after chuck comes out, along the tapering inner wall blowing, and the vibration of vibration hammer, prevent the bonding of dust at the tapering inwall, also prevent the product decomposes.Inlet along wall wind and purging wind can be used as the inwall Butterworth Hatch that sprays tower simultaneously, and clear water enters in the tower after sparger distributes and cleans along wall, can reduce the dead angle problem of cleaning, and shortens scavenging period, raising cleaning efficiency, reduction labour intensity.
Adopted above-mentioned spray-drying tower, made the AOS product to carry out drying, made the drying plant investment of AOS product reduce greatly by spray-dired method.Adopt big, the Heat stability is good of this drying process production product granularity, it is pungent to have reduced user's dust from flying in use, influences problems such as environment.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of spray-drying tower;
Fig. 2 is the diagrammatic cross-section of A-A among Fig. 1;
Fig. 3 is the diagrammatic cross-section of B-B among Fig. 1;
Fig. 4 is the diagrammatic cross-section of C-C among Fig. 1;
Fig. 5 is the spray-dired production technique skeleton diagram of AOS product pressure formula;
Fig. 6 is the centrifugal spray-dired production technique skeleton diagram of AOS product.
As Fig. 1-4, a kind of spray-drying tower comprises tower body 4, and tower body 4 tops have spraying gun 2, and spraying gun can be pressure atomizer or centrifugal atomizer; Tower body 4 tops have rotation wind sparger 4, and hot blast enters in the tower after rotation wind sparger 4 distributes by dry wind inlet 3; Tower body 4 tops also are provided with the suitable wall wind inlet 6 that has along wall wind sparger 5, and suitable wall wind inlet 6 is 4,6 of uniform setting etc., is provided with baffle plate 7 over against 6 places that enter the mouth along wall wind, makes along wall wind to descend along wall; The tower body middle portion is provided with cooling air clamping device 9, and cooling air import 10 is in clamping device 9 lower ends, and cooling air outlet 10 cools off the tower wall by cooling air is mobile from lower to upper in clamping device 9 upper ends; Tower body 4 bottom band conical lower portion 14, the upper end diameter of conical lower portion 14 is greater than tower diameter, its bulge branch is provided with and has the purging wind inlet 12 that purges wind sparger 5, and purging wind inlet 12 also is uniform setting, purges wind and jointly tower body taper position 14 inwalls is cleaned along wall wind.
The periphery of conical lower portion 14 also is provided with vibration hammer 11, by the swing of vibration hammer 11, knocks conical lower portion 14, prevents the material lagging bonding.
Suitable wall wind inlet 6 and purging wind inlet 12 can be used as the inwall Butterworth Hatch that sprays tower simultaneously, and clear water enters in the tower after sparger distributes and cleans along wall.
Cooling air is heated after coming out from clamping device, can be used as purging wind and enters the tower body tapering, and along the tapering inner wall blowing, second stage employ cuts down the consumption of energy.
The production technique of AOS product drying:
1. press spray drying
As Fig. 5, the liquid A OS product below 40% activity concentration is delivered to atomizing nozzle through metering by high-pressure pump squeeze in the spray-drying tower, at 50-300Kgf/cm
2Under the pressure, liquid A OS product sprays from nozzle and forms atomizing droplet, makes the specific surface area of liquid A OS product amplify rapidly.Atomizing droplet is with after 150-450 ℃ hot blast contacts, and the moisture in the droplet is subjected to thermal evaporation, gets rid of with hot blast, the droplet dehydration forms the exsiccant air particles, enters to enter aging, the cooling of ebullated bed after cyclonic separator separates, under the purging of fan, finished powder enters feed bin, enters packing.Concrete processing parameter and the dry result who implements is as follows:
| Processing parameter | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 |
| Feeding temperature (℃) | ??60 | ????60 | ????60 | ???60 | ????60 | ????60 | ????60 | ????60 |
| Input concentration (%) | ??36 | ????36 | ????38 | ???38 | ????40 | ????40 | ????40 | ????40 |
| Feed rate (℃) | ??300 | ????500 | ????1000 | ???1500 | ????2500 | ????2500 | ????4500 | ????5000 |
| Charging atomizing pressure (kgf/cm 2) | ??100 | ????60 | ????200 | ???250 | ????250 | ????80 | ????150 | ????280 |
| Inlet temperature (℃) | ??170 | ????200 | ????250 | ???350 | ????400 | ????420 | ????400 | ????450 |
| Air intake flow (m 3/min) | ??900- ??1200 | ????1100- ????1500 | ????8000- ????13000 | ???10000- ???15000 | ????22000- ????32000 | ????28000- ????35000 | ????42000- ????62000 | ????45000- ????65000 |
| Air outlet temperature (℃) | ??105 | ????110 | ????120 | ???105 | ????110 | ????115 | ????105 | ????108 |
| Drop temperature (℃) | ??50 | ????54 | ????50 | ???52 | ????55 | ????58 | ????52 | ????56 |
| Discharging water content (%) | ??＜2 | ????＜2 | ????＜2 | ???＜2 | ????＜2 | ????＜2 | ????＜2 | ????＜2 |
| Tower diameter (m) | ??1 | ????1 | ????3 | ???3 | ????5 | ????5 | ????7 | ????7 |
2. centrifugal spraying drying
Liquid A OS product below 40% activity concentration is delivered to centrifugal atomizer through volume pump, under the effect of the high rotating speed spraying gun of 5000-20000rpm, liquid A OS product sprays from nozzle and forms atomizing droplet, atomizing droplet enters in the centrifugal spray tower, and the specific surface area of liquid A OS product is amplified rapidly.Atomizing droplet is with after 200-400 ℃ hot blast contacts, and the moisture in the droplet is subjected to thermal evaporation, gets rid of with hot blast, the droplet dehydration forms the exsiccant air particles, enters to enter aging, the cooling of ebullated bed after cyclonic separator separates, under the purging of fan, finished powder enters feed bin, enters packing.
Concrete processing parameter and the dry result who implements is as follows:
| Processing parameter | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Example 14 |
| Feeding temperature (℃) | ||||||
| Input concentration (%) | ||||||
| The charging atomizing pressure | Normal pressure | Normal pressure | Normal pressure | Normal pressure | Normal pressure | Normal pressure |
| Spraying gun rotating speed (rpm) | ??18000 | ??18000 | ????18000 | ??15000 | ????15000 | ????15000 |
| Inlet temperature (℃) | ??350 | ??304 | ????261 | ??266 | ????252 | ????256 |
| Air outlet temperature (℃) | ??112 | ??108 | ????94 | ??91 | ????93 | ????103 |
| Discharging water content (%) | ??0.38 | ??0.62 | ????1.43 | ??0.92 | ????2.17 | ????0.67 |
| Tower diameter (m) | ??5 | ??5 | ????5 | ??3 | ????3 | ????1 |
This drying process also can be used for the drying of sulfonated products such as sodium lauryl sulphate, fatty acid methyl ester sulfonate.
Claims (5)
1. spray-drying tower, comprise tower body (4), tower body (4) top has spraying gun (2), and spraying gun (2) can be pressure atomizer or centrifugal atomizer, it is characterized in that: tower body (4) top has rotation wind sparger (4), and hot blast enters in the tower by rotation wind sparger (4); Tower body (4) top also is provided with the suitable wall wind inlet (6) that has along wall wind sparger (5), over against locating to be provided with baffle plate (7) along wall wind inlet (6), makes along wall wind to descend along wall; The tower body middle portion is provided with cooling air clamping device (9), and cooling air import (10) is in clamping device (9) lower end, and cooling air outlet (10) cools off the tower wall by cooling air is mobile from lower to upper in clamping device (9) upper end; Tower body (4) bottom band conical lower portion (14), the upper end diameter of conical lower portion (14) is greater than tower diameter, its bulge branch is provided with and has the purging wind inlet (12) that purges wind sparger (5), purges wind and jointly tower body taper position (14) inwall is cleaned along wall wind.
2. spray-drying tower according to claim 1 is characterized in that: the periphery of described conical lower portion (14) also is provided with vibration hammer (11).
3. spray-drying tower according to claim 1 is characterized in that: described suitable wall wind inlet (6) is along the uniform setting of tower perisporium.
4. spray-drying tower according to claim 1 is characterized in that: described purging wind inlet (12) is along the uniform setting of tower perisporium.
5. the drying process of a α-Xi Jihuangsuanyan (being called for short AOS) is: with activity concentration is that the AOS product of 30%-40% enters above-mentioned spray-drying tower after metering, by spraying with tiny droplet behind the spraying gun, being used for the exsiccant hot blast temperature is 150-450 ℃, and divide two the tunnel to enter spray-drying tower, one road top from the spray tower forms rotation wind through rotation wind sparger, one the road from forming along wall wind sparger along wall wind, along the wind speed of wall wind for the 4-5 of the wind speed of rotation wind doubly, air outlet temperature is 90-105 ℃; Contact afterwards instantaneous moisture content the drop is gasified with hot blast from the droplet of spraying gun ejection and form fine particle, fine particle enters cyclonic separator and air separation after with the wind at the bottom of the tower, introduce aging, the cooling of boiling aging equipment, form exsiccant AOS hollow bead, pack, go out finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131365 CN1111710C (en) | 2000-11-01 | 2000-11-01 | Spray drying tower and processor drying alpha-ensulfonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131365 CN1111710C (en) | 2000-11-01 | 2000-11-01 | Spray drying tower and processor drying alpha-ensulfonate |
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| CN1351247A true CN1351247A (en) | 2002-05-29 |
| CN1111710C CN1111710C (en) | 2003-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00131365 Expired - Lifetime CN1111710C (en) | 2000-11-01 | 2000-11-01 | Spray drying tower and processor drying alpha-ensulfonate |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016471B (en) * | 2008-03-19 | 2013-01-09 | 宾德股份公司 | Dryer for material to be dried |
| CN103012220A (en) * | 2012-12-17 | 2013-04-03 | 嘉兴赞宇科技有限公司 | Method for preparing powdery Alpha-olefin sulfonate and preparation device |
| CN103458995A (en) * | 2011-05-31 | 2013-12-18 | 三菱重工业株式会社 | Spray drying apparatus for dehydrated filtrate from desulfurization waste water, and exhaust gas treatment system |
| US9527004B2 (en) | 2011-05-31 | 2016-12-27 | Mitsubishi Hitachi Power Systems, Ltd. | Spray drying apparatus of dehydration filtrate from desulfurization waste water, and air pollution control system |
| CN106512456A (en) * | 2016-10-14 | 2017-03-22 | 北京姚魏环保技术有限公司 | Four-stage evaporation device and method for desulfurized waste water |
| CN109028897A (en) * | 2018-07-10 | 2018-12-18 | 青海盐湖工业股份有限公司 | A kind of hydrogen chloride drier |
| CN109045733A (en) * | 2018-07-09 | 2018-12-21 | 吴际 | A kind of spray drying system of flow control alternating temperature |
| CN111908536A (en) * | 2020-09-07 | 2020-11-10 | 国电科学技术研究院有限公司 | Desulfurization wastewater concentrated solution pulsating spray drying method and drying device |
| CN115228113A (en) * | 2022-08-10 | 2022-10-25 | 宁波中科远东催化工程技术有限公司 | Catalytic rectifying tower for producing DMC |
-
2000
- 2000-11-01 CN CN 00131365 patent/CN1111710C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016471B (en) * | 2008-03-19 | 2013-01-09 | 宾德股份公司 | Dryer for material to be dried |
| CN103458995A (en) * | 2011-05-31 | 2013-12-18 | 三菱重工业株式会社 | Spray drying apparatus for dehydrated filtrate from desulfurization waste water, and exhaust gas treatment system |
| US9527004B2 (en) | 2011-05-31 | 2016-12-27 | Mitsubishi Hitachi Power Systems, Ltd. | Spray drying apparatus of dehydration filtrate from desulfurization waste water, and air pollution control system |
| CN103012220A (en) * | 2012-12-17 | 2013-04-03 | 嘉兴赞宇科技有限公司 | Method for preparing powdery Alpha-olefin sulfonate and preparation device |
| CN103012220B (en) * | 2012-12-17 | 2014-12-31 | 嘉兴赞宇科技有限公司 | Method for preparing powdery Alpha-olefin sulfonate and preparation device |
| CN106512456A (en) * | 2016-10-14 | 2017-03-22 | 北京姚魏环保技术有限公司 | Four-stage evaporation device and method for desulfurized waste water |
| CN109045733A (en) * | 2018-07-09 | 2018-12-21 | 吴际 | A kind of spray drying system of flow control alternating temperature |
| CN109028897A (en) * | 2018-07-10 | 2018-12-18 | 青海盐湖工业股份有限公司 | A kind of hydrogen chloride drier |
| CN111908536A (en) * | 2020-09-07 | 2020-11-10 | 国电科学技术研究院有限公司 | Desulfurization wastewater concentrated solution pulsating spray drying method and drying device |
| CN111908536B (en) * | 2020-09-07 | 2024-02-20 | 国家能源集团科学技术研究院有限公司 | Desulfurization wastewater concentrated solution pulsation spray drying method and drying device |
| CN115228113A (en) * | 2022-08-10 | 2022-10-25 | 宁波中科远东催化工程技术有限公司 | Catalytic rectifying tower for producing DMC |
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| Publication number | Publication date |
|---|---|
| CN1111710C (en) | 2003-06-18 |
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Owner name: SINO LIGHT MATERIALS ZHEJIANG CHEMICAL CO., LTD. Free format text: FORMER NAME OR ADDRESS: ZHEJIANG JILIDA CHEMICAL CO., LTD. |
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Address after: 311215, No. 60, No. 1 road, Xiaoshan economic and Technological Development Zone, Zhejiang Patentee after: Zhongqingwuchan Zhejiang Chemical Co., Ltd. Address before: 311215, No. 60, No. 1 road, Xiaoshan economic and Technological Development Zone, Zhejiang Patentee before: Zhejiang Jilida Chemical Co., Ltd. |
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Owner name: SINOLIGHT CHEMICAL CO., LTD. Free format text: FORMER NAME: ZHONGQINGWUCHAN ZHEJIANG CHEMICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 311215, No. 60, No. 1 road, Xiaoshan economic and Technological Development Zone, Zhejiang Patentee after: SinoLight Chemical Co., Ltd. Address before: 311215, No. 60, No. 1 road, Xiaoshan economic and Technological Development Zone, Zhejiang Patentee before: Zhongqingwuchan Zhejiang Chemical Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20030618 |
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| CX01 | Expiry of patent term |