CN104906817A - Method and device for auxiliary control of properties of spray-dried powder - Google Patents
Method and device for auxiliary control of properties of spray-dried powder Download PDFInfo
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- CN104906817A CN104906817A CN201510228243.5A CN201510228243A CN104906817A CN 104906817 A CN104906817 A CN 104906817A CN 201510228243 A CN201510228243 A CN 201510228243A CN 104906817 A CN104906817 A CN 104906817A
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Abstract
The invention relates to a method and device for auxiliary control of properties of a spray-dried powder; the method comprises before slurry goes into an atomizer of a spray dryer, an on-line heating device is arranged, and the properties of the spray-dried powder are auxiliarily controlled through on-line control of the spraying slurry temperature. The method can adjust the particle size, morphology, water content and other properties of the powder, and increases a convenient and effective way for control of the properties of the spray-dried powder. The device comprises a heating container, a heating device, a temperature sensor and a temperature controller.
Description
Technical field
The present invention relates to the spray drying process preparation of powder, for spray drying technology equipment field, relate to the auxiliary control method that spray drying technology prepares properties of powder further.
Background technology
Spraying dry is the drying means that industrial production is often applied to, slurry is atomized into tiny liquid pearl by atomizer and dewaters under hot wind action, is dried to powder containing certain moisture content and granularity, is widely used in the industries such as material, food, medicine, chemical industry.The performance indications of powder comprise moisture content, particle size, domain size distribution, granule-morphology etc.Existing spray drying device controls properties of powder common method and comprises EAT, leaving air temp, jet size, atomizer rotating speed, charging rate, feed pressure etc.In a lot of situation, these control methods can't or be inconvenient to meet the demands; such as; spraying dry machine run time due to outdoor temperature and spray dryer internal temperature difference very large; need the regular hour just can reach poised state; although during this period of time the parameter of existing control system is identical; but the performance of powder is constantly change, in addition, even if be adjusted to the parameters such as the highest EAT when environment temperature is very low also often can obtain the higher powder of moisture content.
Summary of the invention
The object of the invention is to provide a kind of method for auxiliary control spray drying powder performance and device, enter the atomizer of spray dryer at slurry before, online heater is set, assists by the temperature of On-line Control spraying slurry the performance controlling spray drying powder.
Technical solution problem of the present invention adopts following technical scheme: a kind of method of auxiliary control spray drying powder performance and device, the method is: arranged online heater enter the atomizer of spray dryer at slurry before, the performance controlling spray drying powder is assisted by the temperature of On-line Control spraying slurry, wherein, this device comprises heating container, heater, temperature sensor and temperature controller.
Optionally, the method for described auxiliary control spray drying powder performance and device, heater comprises resistance heater and power device.
Optionally, the method for described auxiliary control spray drying powder performance and device, heater comprises electromagnetic heating coil and electromagnetic heating controller.
Optionally, the method of described auxiliary control spray drying powder performance and device, in heating container or be close to outside heating container described resistance heater is set, described resistance heater is connected with described power device, described power device is connected with temperature controller, the discharging position set temperature sensor of heating container, temperature sensor is connected with temperature controller.
Optionally, the method of described auxiliary control spray drying powder performance and device, described electromagnetic heating coil is set outside heating container, described electromagnetic heating coil is connected with described electromagnetic heating controller, described electromagnetic heating controller is connected with temperature controller, the discharging position set temperature sensor of heating container, temperature sensor is connected with temperature controller.
Optionally, the described method for auxiliary control spray drying powder performance and device, the material of heating container is martensite or ferritic stainless steel.
Optionally, the described method for auxiliary control spray drying powder performance and device, arrange the rod that dams at heating container center, and the rod that dams is fixedly connected with by support with heating container inwall.
Optionally, the described method for auxiliary control spray drying powder performance and device, heating container or slurry flows pipeline arrange pressure sensor, and described pressure sensor is connected with temperature controller or heater.
Optionally, the described method for auxiliary control spray drying powder performance and device, heating container or slurry flows pipeline arrange flow sensor, and described flow sensor is connected with temperature controller or heater.
Optionally, the described method for auxiliary control spray drying powder performance and device, heating container is tubulose.
Optionally, the described method for auxiliary control spray drying powder performance and device, the installation direction of described tubulose heating container and level angle are 5 ~ 90 degree.
Optionally, the described method for auxiliary control spray drying powder performance and device, the below of described tubulose heating container is charging aperture, and top is discharging opening.
Wherein the granule size of spray drying powder and pattern relevant with the viscosity of slurry, viscosity is larger, the particle diameter of powder is also larger, the viscosity B coefficent of slurry impacts drop moisture evaporation after atomization and causes powder pattern to change simultaneously, and the viscosity of slurry is relevant with the temperature of slurry, slurry temperature more high viscosity is less, so the temperature controlling slurry can change granularity and the pattern of powder.
Powder is obtained by the slurry drying be atomized, atomization process is exactly the process of moisture evaporation, under the conditions such as identical EAT, the temperature of slurry is higher, the heat that the evaporation of its moisture needs is less, identical heat just can evaporate more moisture, and the powder moisture content obtained is lower, so the temperature controlling slurry can change the moisture content of powder.
The present invention is used for the auxiliary method and the device that control spray drying powder performance, and can adjust the performances such as the granularity of powder, pattern, moisture content, the Properties Control for spray drying powder increases an approach easily and effectively.
Accompanying drawing explanation
Fig. 1 is the present invention for the structure principle chart of resistance heating manner in the method for auxiliary control spray drying powder performance and device.
Fig. 2 is the present invention for the structure principle chart of Electromagnetic Heating mode in the method for auxiliary control spray drying powder performance and device.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is further elaborated.
Embodiment 1
Be illustrated in figure 1 the device of the auxiliary control spray drying powder performance of resistance heating manner, slurry enters heating container 100 from the side of heating container 100, resistance heater 201 is axially arranged on the electrically heated rod at heating container 100 center for prolonging, resistance heater 201 is used for heated slurry, resistance heater 201 is connected with power device 202, at the discharge end set temperature sensor 104 of heating container 100, temperature sensor 104 is connected with temperature controller 103, and temperature controller 103 is connected with power device 202.The slurry temperature that during operation, temperature controller 103 needs according to the heating power thus obtain that the slurry temperature of setting and the actual slurry temperature measured by temperature sensor 104 control power device 202.
The kind of power device 202 of the present invention includes but not limited to contactor, solid-state relay, IGCT.
In the present invention, the design temperature of temperature controller 103 can set manually, also directly can be controlled by some parameter measurement instrument of powder, to reach the object automatically controlling properties of powder.The automatic control of granule size such as can be reached by the particle size analyzer control temperature of powder.
Resistance heater of the present invention is not limited to built-in electrically heated rod, such as, also can be wrapped in the electrical heating wire outside heating container 100.
Pressure sensor or flow sensor can also be increased in method and apparatus of the present invention, control the start and stop of heater with pressure or flow.If heated when not having slurry or slurry not to flow in heating container 100, then the speed that the temperature after heating is delivered to temperature sensor 104 very slowly, will may cause the damage of heating container 100 and resistance heater 201.Pressure or flow sensor can detect in heating container 100 whether whether be full of slurry and slurry in flowing, can control to stop heating when pressure sensor or flow sensor detect in heating container and do not have slurry or slurry not to flow.Pressure sensor or flow sensor can be connected with temperature controller 103 or power device 202 or be connected with temperature controller 103 and power device 202 simultaneously.
Embodiment 2
Be illustrated in figure 2 the device of the auxiliary control spray drying powder performance of Electromagnetic Heating mode, slurry enters heating container 100 from the lower end of heating container 100, electromagnetic heating coil 101 is arranged on the outside of heating container 100, electromagnetic heating coil 101 is connected with electromagnetic heating controller 102, at the discharge end set temperature sensor 104 of heating container 100, temperature sensor 104 is connected with temperature controller 103, temperature controller 103 is connected with electromagnetic heating controller 102, the slurry temperature that during operation, temperature controller 103 needs according to the heating power thus obtain that the slurry temperature of setting and the actual slurry temperature measured by temperature sensor 104 control electromagnetic heating controller 102.
Electromagnetic heating technique is existing public technology, no longer describes at this.
In the present invention, the design temperature of temperature controller 103 can set manually, also directly can be controlled by some parameter measurement instrument of powder, to reach the object automatically controlling properties of powder.The automatic Measurement & Control of granule size such as can be reached by the particle size analyzer control temperature of powder.
It is preferred that in the preferred embodiment of the method for the invention and device, can also arrange the rod 105 that dams in heating container 100 center, the rod 105 that dams is fixed on the inwall of heating container 100 by support 106.Dam rod 105 the contact area adding slurry and heating container 100 inwall increasing Unit Weight, thus can improve the efficiency of heating surface improvement heating effect.
Pressure sensor or flow sensor can also be increased in method and apparatus of the present invention, control the start and stop of heater with pressure or flow.If heated when not having slurry or slurry not to flow in heating container 100, then the speed that the temperature after heating is delivered to temperature sensor 104 very slowly, will may cause the damage of heating container 100 and electromagnetic heating coil 101.Pressure or flow sensor can detect in heating container 100 whether whether be full of slurry and slurry in flowing, can control to stop heating when pressure sensor or flow sensor detect in heating container and do not have slurry or slurry not to flow.Pressure sensor or flow sensor can be connected with temperature controller 103 or electromagnetic heating controller 102, or are connected with temperature controller 103 and power device 102 simultaneously.
The foregoing is only better embodiment of the present invention, therefore can not be interpreted as the restriction to scope of patent protection of the present invention, all equalizations done according to this clearly demarcated right change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (13)
1. the method for auxiliary control spray drying powder performance, it is characterized in that, the method is: arranged online heater enter the atomizer of spray dryer at slurry before, assists by the temperature of On-line Control spraying slurry the performance controlling spray drying powder; This device comprises heating container, heater, temperature sensor and temperature controller.
2. the method for auxiliary control spray drying powder performance according to claim 1, is characterized in that: described heater comprises resistance heater and power device.
3. the method for auxiliary control spray drying powder performance according to claim 1, is characterized in that: described heater comprises electromagnetic heating coil and electromagnetic heating controller.
4. the method for auxiliary control spray drying powder performance according to claim 2, it is characterized in that: in heating container or be close to outside heating container described resistance heater is set, described resistance heater is connected with described power device, described power device is connected with temperature controller, the discharging position set temperature sensor of heating container, temperature sensor is connected with temperature controller.
5. the method for auxiliary control spray drying powder performance according to claim 3, it is characterized in that: described electromagnetic heating coil is set outside heating container, described electromagnetic heating coil is connected with described electromagnetic heating controller, described electromagnetic heating controller is connected with temperature controller, the discharging position set temperature sensor of heating container, temperature sensor is connected with temperature controller.
6. the method for auxiliary control spray drying powder performance according to claim 3, is characterized in that: the material of heating container is martensite or ferritic stainless steel.
7. the method for auxiliary control spray drying powder performance according to claim 3, is characterized in that: arrange the rod that dams at heating container center, and the rod that dams is fixedly connected with by support with heating container inwall.
8. the method for auxiliary control spray drying powder performance according to claim 1, is characterized in that: on heating container or slurry flows pipeline, arrange pressure sensor, described pressure sensor is connected with temperature controller or heater.
9. the method for auxiliary control spray drying powder performance according to claim 1, is characterized in that: on heating container or slurry flows pipeline, arrange flow sensor, described flow sensor is connected with temperature controller or heater.
10. the method for auxiliary control spray drying powder performance according to claim 1, is characterized in that: heating container is tubulose.
The method of 11. auxiliary control spray drying powder performances according to claim 10, is characterized in that: the installation direction of described tubulose heating container and level angle are 5 ~ 90 degree.
The method of 12. auxiliary control spray drying powder performances according to claim 11, is characterized in that: the charging aperture of described tubulose heating container is in below, and discharging opening up.
13. 1 kinds of auxiliary devices controlling spray drying powder performance, is characterized in that: the method realizing the arbitrary described auxiliary control spray drying powder performance of claim 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510228243.5A CN104906817A (en) | 2015-05-06 | 2015-05-06 | Method and device for auxiliary control of properties of spray-dried powder |
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| CN201510228243.5A CN104906817A (en) | 2015-05-06 | 2015-05-06 | Method and device for auxiliary control of properties of spray-dried powder |
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| CN104906817A true CN104906817A (en) | 2015-09-16 |
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| CN201510228243.5A Pending CN104906817A (en) | 2015-05-06 | 2015-05-06 | Method and device for auxiliary control of properties of spray-dried powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964171A (en) * | 2017-05-19 | 2017-07-21 | 佛山市爱摩生科技有限公司 | A kind of spray tower powder automated system |
| CN117232247A (en) * | 2023-11-13 | 2023-12-15 | 江苏维尤纳特精细化工有限公司 | Slurry heating and drying system and method |
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| CN1657422A (en) * | 2005-01-27 | 2005-08-24 | 北京科技大学 | Device and method for preparing nanometer tungsten trioxide powder using ultrasonic spray microwave drying method |
| WO2010091461A1 (en) * | 2009-02-11 | 2010-08-19 | Hatch Associates Pty Ltd | Evaporator/flash vessel arrangements |
| CN201417070Y (en) * | 2009-06-01 | 2010-03-03 | 王利运 | Slurry/liquid material wetness decompression reboiling spraying drying device |
| CN203816243U (en) * | 2014-05-07 | 2014-09-10 | 史洪波 | Superheated steam spray drying equipment |
| CN204275523U (en) * | 2014-12-02 | 2015-04-22 | 石家庄东华金龙化工有限公司 | A kind of energy-conservation spray dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106964171A (en) * | 2017-05-19 | 2017-07-21 | 佛山市爱摩生科技有限公司 | A kind of spray tower powder automated system |
| CN117232247A (en) * | 2023-11-13 | 2023-12-15 | 江苏维尤纳特精细化工有限公司 | Slurry heating and drying system and method |
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