CN103877736A - Energy-saving high-efficient spray drying apparatus - Google Patents
Energy-saving high-efficient spray drying apparatus Download PDFInfo
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- CN103877736A CN103877736A CN201210560289.3A CN201210560289A CN103877736A CN 103877736 A CN103877736 A CN 103877736A CN 201210560289 A CN201210560289 A CN 201210560289A CN 103877736 A CN103877736 A CN 103877736A
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Abstract
The purpose of the invention is to provide an energy-saving high-efficient spray drying apparatus for increasing the thermal efficiency of a spray drying apparatus. The energy-saving high-efficient spray drying apparatus in the invention includes: a spray drying column; an atomizer which is used for dispersing a solution or a muddy fluid into fine liquid drops, wherein the solution or muddy fluid is fed into the spray drying column; an air heater for heating air; an air blower for supplying hot air into the spray drying column; and a cyclone separator which is connected to an exhaust fan and is used for recycling the product suspended inside the spray drying column. The spray drying apparatus is characterized in that: a sleeve is externally disposed on the spray drying column so that the air at normal temperature flows through the sleeve, is warmed and heated by an external heat transfer surface of the spray drying column, is fed into the air heater by the air blower and then is fed into the spray drying column. [0]
Description
Technical field
The present invention relates to dope to carry out dry drying device, relate in particular to spray-drying installation.
Background technology
With regard to prior art, forming spray-drying installation consists essentially of: spray drying tower, make solution or mud shape fluid dispersion in this spray drying tower become the atomizer that fine droplets is used, for by the hot air blower in warm-air supply spray drying tower, and is connected with exhaust blower and is used for reclaiming the cyclone separator etc. that is suspended in the goods in spray drying tower.
The spray-drying installation that the dry engineering of pharmaceuticals manufacture and the dry engineering of food manufacturing are used, possess the feature that is directly created powder for drying product by liquid, but its thermal efficiency (for adding thermogenetic desiccant hot blast, being actually used in the dry upper heat ratio using) very low compared with other drying means.Therefore, spray-drying installation is high drying device in dry energy cost.
Summary of the invention
The object of the present invention is to provide a kind of energy-saving and high efficient rate spray-drying installation, to improve the thermal efficiency of spray-drying installation.
For realizing the energy-saving and high efficient rate spray-drying installation of described object, comprise spray drying tower, the solution or the mud shape fluid dispersion that make to enter in this spray drying tower become the atomizer that fine droplets is used, for adding the air heater of hot-air, be used for the pressure fan in warm-air supply spray drying tower, and be connected with exhaust blower for reclaiming the cyclone separator that is suspended in the goods in spray drying tower, be characterized in, overcoat is set up in the outside of this spray drying tower, so that normal temperature air is through this overcoat, after external heat transfer face heat temperature raising by this spray drying tower, send into air heater through pressure fan, be re-supplied in this spray drying tower.
Owing to having set up aforementioned overcoat, the present invention has advantages of that the thermal efficiency is high, yield rate is high.Aforementioned objects, features and advantages of the present invention will be described in detail by reference to the accompanying drawings in embodiment described later.
Brief description of the drawings
Fig. 1 is the system block diagram of energy-saving and high efficient rate spray-drying installation in the embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1, treatment fluid carries out composition adjustment and heating (being heated to 60 DEG C of left and right) in feed tank 1, and quantitative liquid feeding pump 2 is transported to stoste the one of centrifugal atomizer 6(atomizer quantitatively) in form 50u～100u drop spraying enter in spray drying tower 7.The drop that spraying forms is accompanied by together with hot blast and enters in a whirlwind retracting device 10 becoming dried powder, powder after contacting with hot blast spray drying tower 7 in, can collect dried powder here.
Dry with hot blast be the fresh air of normal temperature (20 DEG C of left and right), after sucking from front end air cleaner 31, the air heat of installing by spray drying tower 7 outsides, with after (simultaneously also as the cooling use of spray drying tower 7 inwall) overcoat 8, rises normal temperature air and is sucked by pressure fan 4 afterwards.Overcoat 8 is made up of heat preserving and insulating material 81.After pressure fan 4 enters the hot blast temperature (160～180 DEG C) that is heated to set steam heating type air heater and/or electric heating air heater 5, after the filtration of air accurate filter 32, be blown in spray drying tower 7.After contacting with spray droplet, the hot blast being blown in spray drying tower 7 make medicine or food in stoste form drying regime after moisture evaporation, dry making causes temperature decline (90 DEG C of left and right) after exchange heat, hot blast is accompanied by dried powder and goes to a whirlwind retracting device 10 to carry out after the separation of dried powder through piping 12 together, goods enter receiving tank 100, remaining gas, after the attraction of exhaust blower 11, is carried out exhaust by blast pipe.In addition, in Fig. 1, Reference numeral 101 indicates gas bag, and Reference numeral 102 indicates drain valve.
Previous embodiment is dried after liquid is made into fine droplets on sprayer 6, overcoat 8 is set up in the outside of spray drying tower 7, the external heat transfer face of spray drying tower 7 will be sent into after air heater 5 after the fresh air of suction overcoat 8 (air of suction is at 20 DEG C of common planned value) temperature rise (10 degree), the use amount of the thermal source (saturated vapor, electric power etc.) of air heater 5 is reduced, and its object aim is to have improved fuel factor.
For the spray-drying installation of pharmaceuticals, food drying, conventionally the hot blast temperature blowing out from spray drying tower (spray drying tower main body) is set in 140～180 DEG C, before dry beginning, in order to prevent that evaporating condensation in the device causing by moisture in dry run produces, hot blast is flowed directly in a whirlwind retracting device, until temperature reaches more than 90 DEG C, at this moment spray drying tower internal face will exceed 130 DEG C of generation high temperataure phenomenas, the spray droplet not being dried after the dry beginning of spraying causes adhesion, and bur produces high temperature zoom phenomenon.
Previous embodiment arranges overcoat 8 in the outside of spray drying tower 7, forcibly by cooling fresh air outside wall surface, cause tower wall temperature decline (100 DEG C following), make can not cause adhesion, can not cause zoom phenomenon, the quality of dry products is also good, and the yield of dry product is also improved.
In the aforementioned embodiment, the temperature difference between the temperature rise of the hot-air of air heater 5 is little, can reduce the amount of capacity that adds thermal capacity, air heater 5 of heater 5 and also can dwindle.
In the aforementioned embodiment, after the outer installation of spray drying tower 7 adds overcoat 8, adhesion situation reduces widely, and the diameter of spray drying tower 7 also can reduce.
In conjunction with previous embodiment, dry with describing as example taking Chinese medical extract.
Concentrate (solid constituent concentration 40% after extracting～refining～concentrating, moisture 60%) under liquid supply speed 100kg/hr, adopt centrifugal spray drier to spray to manufacture the dried powder of water content 2%, air at the interior injection fresh air of spray drying tower overcoat 8 in the spray-drying installation of previous embodiment starts temperature rise to 60 DEG C by normal temperature (20 DEG C), in operating process, the hot blast temperature of spray drying tower entrance is 160 DEG C, the thermal efficiency of hot blast aspect when delivery temperature is 90 DEG C of operations is (160-90)/(160-60)=0.7(70%).
On the other hand, do not arrange in the situation of overcoat on spray drying tower in the past, the thermal efficiency of hot blast aspect is (160-90)/(160-20)=0.5(50%).
Relevant dry products aspect, can not cause on the spray drying tower inwall of previous embodiment and adhere to and/or zoom phenomenon, when the product volume 38kg of a whirlwind retracting device, yield is 38/40=0.95(95%)
The product volume that the last whirlwind of spray-drying installation in the past reclaims is 36kg, and yield is 36/40=0.9(90%).
Claims (1)
1. energy-saving and high efficient rate spray-drying installation, comprise spray drying tower, the solution or the mud shape fluid dispersion that make to enter in this spray drying tower become the atomizer that fine droplets is used, for adding the air heater of hot-air, be used for the pressure fan in warm-air supply spray drying tower, and be connected with exhaust blower for reclaiming the cyclone separator that is suspended in the goods in spray drying tower, it is characterized in that, overcoat is set up in the outside of this spray drying tower, so that normal temperature air is through this overcoat, after external heat transfer face heat temperature raising by this spray drying tower, send into air heater through pressure fan, be re-supplied in this spray drying tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560289.3A CN103877736A (en) | 2012-12-21 | 2012-12-21 | Energy-saving high-efficient spray drying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560289.3A CN103877736A (en) | 2012-12-21 | 2012-12-21 | Energy-saving high-efficient spray drying apparatus |
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| CN103877736A true CN103877736A (en) | 2014-06-25 |
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| CN201210560289.3A Pending CN103877736A (en) | 2012-12-21 | 2012-12-21 | Energy-saving high-efficient spray drying apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399264A (en) * | 2014-11-29 | 2015-03-11 | 南京威安新材料科技有限公司 | Energy-saving and efficient solid catalyst atomizing and drying system |
| CN104437243A (en) * | 2014-11-29 | 2015-03-25 | 南京威安新材料科技有限公司 | Centrifugal spray-drying system for drying catalysts |
| CN107449634A (en) * | 2017-08-22 | 2017-12-08 | 中国海洋大学 | The device and sampling method of sampling in a kind of spray drying tower |
| CN108557790A (en) * | 2018-04-11 | 2018-09-21 | 闫超良 | A kind of spray drying process prepares dipotassium hydrogen phosphate technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381973Y (en) * | 1999-08-21 | 2000-06-07 | 新疆生命红科技投资开发有限责任公司 | Spray drying tower |
| CN101089525A (en) * | 2007-06-28 | 2007-12-19 | 张和明 | Powder-injection type medicine spray dryer |
| CN101196365A (en) * | 2006-12-06 | 2008-06-11 | 中国石油天然气股份有限公司 | Drying process and equipment for powdered urea-formaldehyde resin |
-
2012
- 2012-12-21 CN CN201210560289.3A patent/CN103877736A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381973Y (en) * | 1999-08-21 | 2000-06-07 | 新疆生命红科技投资开发有限责任公司 | Spray drying tower |
| CN101196365A (en) * | 2006-12-06 | 2008-06-11 | 中国石油天然气股份有限公司 | Drying process and equipment for powdered urea-formaldehyde resin |
| CN101089525A (en) * | 2007-06-28 | 2007-12-19 | 张和明 | Powder-injection type medicine spray dryer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399264A (en) * | 2014-11-29 | 2015-03-11 | 南京威安新材料科技有限公司 | Energy-saving and efficient solid catalyst atomizing and drying system |
| CN104437243A (en) * | 2014-11-29 | 2015-03-25 | 南京威安新材料科技有限公司 | Centrifugal spray-drying system for drying catalysts |
| CN104399264B (en) * | 2014-11-29 | 2016-04-20 | 南京威安新材料科技有限公司 | A kind of energy-conservation solid catalyst atomization drying system |
| CN104437243B (en) * | 2014-11-29 | 2016-08-17 | 南京威安新材料科技有限公司 | A kind of centrifugal spray drying system for dry catalyst |
| CN107449634A (en) * | 2017-08-22 | 2017-12-08 | 中国海洋大学 | The device and sampling method of sampling in a kind of spray drying tower |
| CN107449634B (en) * | 2017-08-22 | 2019-12-06 | 中国海洋大学 | Sampling device and sampling method in spray drying tower |
| CN108557790A (en) * | 2018-04-11 | 2018-09-21 | 闫超良 | A kind of spray drying process prepares dipotassium hydrogen phosphate technique |
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Application publication date: 20140625 |