CN205068126U - Online real -time detection device of fluidized bed dryer material humidity ratio - Google Patents
Online real -time detection device of fluidized bed dryer material humidity ratio Download PDFInfo
- Publication number
- CN205068126U CN205068126U CN201520731114.3U CN201520731114U CN205068126U CN 205068126 U CN205068126 U CN 205068126U CN 201520731114 U CN201520731114 U CN 201520731114U CN 205068126 U CN205068126 U CN 205068126U
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- China
- Prior art keywords
- exsiccator
- temperature sensor
- desicator
- gas phase
- fluidized bed
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model provides an online real -time detection device of fluidized bed dryer material humidity ratio, include the PLC controller and be arranged in detecting a temperature sensor of desicator import air temperature value, the 2nd temperature sensor, the setting that are arranged in detecting desicator export air temperature value is used for the desicator gaseous phase temperature sensor that detects the desicator gaseous phase humidity transducer of desicator gaseous phase humidity and be used for detecting desicator gaseous phase temperature in the desicator, a temperature sensor, the 2nd temperature sensor, desicator gaseous phase humidity transducer and desicator gaseous phase temperature sensor's output is connected with the input of PLC controller respectively, and display device is connected to the output of PLC controller. The utility model discloses can carry out real -time detection to the humidity ratio that the fluidized bed exported the material to can according to the testing result in to dry run the steam volume adjust, with the temperature of hot air value of further controlling air intlet, carry out the effective control to the humidity ratio of desicator export material.
Description
Technical field
The utility model relates to dry materials technical field, is particularly a kind ofly applied in fluidized bed dryer for detecting the device of material moisture content in real time.
Background technology
In the production run of the industries such as chemical industry, light industry, food, medicine and processing of agriculture product, the content of various chemical finished product hygroscopic water (moisture or chemical solvent) all specifies fixing standard, it directly affects the performance of product, quality and cost, is an important indicator of industrial processes.So before solid material becomes finished product, the hygroscopic water wherein exceeding regulation must be removed.
Dehumanization method conventional in current commercial production has following two kinds: one to be utilize gravity or centrifugal force dehumidifying, and this method can only remove part hygroscopic water in wet stock; Two is utilize heat energy to make hygroscopic water gasification in wet mass, and discharges the steam generated, and to obtain the product that moisture content reaches regulation, this dehumanization method is called drying.Owing to adopting the effect on moisture extraction of drying means better, be therefore widely applied in the industrial production.
In current production run, determination many employings hand sampling of fluidized bed dryer outlet material i.e. final products moisture content (moisture wet basis), approximately every sampling in 1-2 hour once, then delivers to laboratory by sample and chemically examines.If the sample passes of chemical examination, then product can packaging and warehousing, if sample moisture is higher than standard value, then operating personnel rule of thumb, suitably opens large steam valve, improves air inlet temperature; Go out material then to need to deliver to entrance, again dry.Adopt fluidized bed dryer to detect in moisture content process in sampling and there is deficiency: 1) due in dry run, utilize hot-air as drying medium, heat is passed to wet stock as thermophore by hot-air on the one hand, as carrying wet body, the moisture after material vaporization is removed again on the other hand, what therefore contact with material in whole dry run is all soft air, so the state of soft air had both been related to number and the speed of transferring heat, speed and the amount of mass transfer were related to again; But the state of soft air carrying out and change with dry run, not easily detect, be therefore also difficult to reduce energy consumption according to the state of soft air in dry run.2) sample interval is longer, and valve operation gets up trouble, and labor strength is large.3) moisture content fluctuation due to product is very large, and especially night shift is produced, and hand sampling can cause product often to repeat drying, not only affects product quality and yield, and the significant wastage energy.
Utility model content
The utility model technical issues that need to address are to provide a kind of fluidized bed dryer material moisture content on-line real-time measuremen device, and it can detect in real time the moisture content of fluidized bed outlet material and can carry out the device of control automatically according to testing result to the input of quantity of steam in dry run.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of fluidized bed dryer material moisture content on-line real-time measuremen device, comprise PLC and be arranged on exsiccator air in for detecting the first temperature sensor of exsiccator inlet air temperature value, be arranged on exsiccator air out for detecting the second temperature sensor of dryer export air temperature value, be arranged in exsiccator for detecting the exsiccator gas phase humidity sensor of gas phase humidity in exsiccator and the exsiccator gas phase temperature sensor for detecting gas phase temperature in exsiccator, described first temperature sensor, second temperature sensor, exsiccator gas phase humidity sensor is connected with the input end of PLC respectively with the output terminal of exsiccator gas phase temperature sensor, the output terminal of PLC connects display device.
Above-mentioned fluidized bed dryer material moisture content on-line real-time measuremen device, the output terminal of described PLC be arranged on exsiccator air in and be connected with the steam control valve on jet chimney between vapour source.
Above-mentioned fluidized bed dryer material moisture content on-line real-time measuremen device, the outer cover of described exsiccator gas phase temperature sensor is equipped with closed sheath.
Above-mentioned fluidized bed dryer material moisture content on-line real-time measuremen device, described exsiccator gas phase humidity sensor is provided with Teflon filter.
Owing to have employed above technical scheme, the technical progress acquired by the utility model is as follows:
The utility model can detect in real time to the moisture content of fluidized bed outlet material, and automatically can control the input of quantity of steam in dry run according to testing result, to control the hot air temperature value of air in further, achieve the reliable control that the moisture content of dryer export material is required, also intuitively can show testing result.Application of the present utility model, not only alleviates operating personnel's labour intensity, improves work efficiency, but also greatly reduce energy consumption, has saved drying cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model installation site schematic diagram in exsiccator.
In figure, each label is expressed as: 1. the first temperature sensor, 2. the second temperature sensor, 3. exsiccator gas phase temperature sensor, 4. exsiccator gas phase humidity sensor, 5. steam control valve, 6.PLC controller, 7. display device, 8. jet chimney, 9. heat interchanger, 10. exsiccator, 11. air ins, 12. air outs, 13. material inlets, 14. material outlets.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
Structure of the present utility model as shown in Figure 1, comprises PLC 6, display device 7, first temperature sensor 1, second temperature sensor 2, exsiccator gas phase temperature sensor 3 and exsiccator gas phase humidity sensor 4.As shown in Figure 2, wherein, the first temperature sensor 1 is arranged on exsiccator air in, for detecting the air temperature value of exsiccator air in the installation site of each device in exsiccator; Second temperature sensor 2 is arranged on exsiccator air out, for detecting the air temperature value of exsiccator air out, exsiccator gas phase temperature sensor 3 and exsiccator gas phase humidity sensor 4 are arranged in exsiccator, are respectively used to the gas phase temperature and the gas phase humidity that detect exsiccator inside; First temperature sensor, the second temperature sensor, exsiccator gas phase humidity sensor are connected with the input end of PLC respectively with the output terminal of exsiccator gas phase temperature sensor.
Because the raw meal particle size in exsiccator is smaller, quality comparation is light, and material can be blown afloat by hot-air in dry run, spreads in whole exsiccator inner; And material ratio is wetter, often surveying instrument surface can be sticked to, contaminant sensor.Therefore in the present embodiment, closed sheath is housed to protect sensor in the outer cover of exsiccator gas phase temperature sensor, sheath can carry out periodic cleaning after drying terminates; And for exsiccator gas phase humidity sensor, because it must contact with air, therefore closed sheath can not be adopted, the present embodiment adopts the method for additional filtrator, the filtrator of Teflon material selected by filtrator, and the dew point hygrometer of Vaisala Oy selected by exsiccator gas phase humidity sensor, and exsiccator gas phase humidity sensor exports two paths of signals to PLC, one tunnel is dew point signal (Td), the temperature of dew point signal when to be that unsaturated air etc. is wet be cooled to state of saturation; One tunnel is relative humidity signal (), and relative humidity signal absorbs the ability of moisture for reacting wet steam, when=1, represents that the water vapor in soft air has reached saturated, can not as drying medium.
The moisture content that the numerical value that PLC is used for detecting according to the first temperature sensor, the second temperature sensor, exsiccator gas phase humidity sensor and exsiccator gas phase temperature sensor carries out dryer export material is analyzed, and is shown by display device.In the utility model the output terminal of PLC 6 also be arranged on exsiccator air in and be connected with the steam control valve 5 on jet chimney between vapour source, for controlling steam input quantity, to control exsiccator temperature of inlet air value further according to result of calculation.In the present embodiment, PLC has selected the PLC system of German BECKHOFEAOTUMATIONCOMPANY.
PLC, when calculating dryer export material moisture content, adopts following formulae discovery:
X=Xc*C*Hv*μ*A*?（Ti，To，Tg，Td）
In formula, Ti is exsiccator temperature of inlet air value,
To is exsiccator air exit temp value,
Tg is gas phase temperature value in exsiccator,
Td is the dew point that in exsiccator, gas phase humidity value is corresponding,
Xc is the critical moisture content of falling-rate periods of drying and constant rate of drying, and C is heat capacity of air, and Hv is the latent heat of water, and μ is mass transfer coefficient, and A is that solid particles surface is amassed.
Above-mentioned Xc, C, Hv, μ, A are the parameters with process conditions and device-dependent, be constant, be determined by experiment at the scene for concrete occasion.Ti, To, Tg, Td are the signals of collection in worksite, i.e. the numerical value of the first temperature sensor, the second temperature sensor, exsiccator gas phase temperature sensor and exsiccator gas phase humidity sensor detection.
The utility model is not only applicable to the detection carrying out outlet material moisture content in fluidized bed dryer, can also be applied to other drying equipments, as vacuum dryer, pneumatic conveying dryer, spray drying device etc.
Claims (4)
1. a fluidized bed dryer material moisture content on-line real-time measuremen device, it is characterized in that: comprise PLC (6) and be arranged on exsiccator air in for detecting first temperature sensor (1) of exsiccator inlet air temperature value, be arranged on exsiccator air out for detecting second temperature sensor (2) of dryer export air temperature value, be arranged in exsiccator for detecting the exsiccator gas phase humidity sensor (4) of gas phase humidity in exsiccator and the exsiccator gas phase temperature sensor (3) for detecting gas phase temperature in exsiccator, described first temperature sensor, second temperature sensor, exsiccator gas phase humidity sensor is connected with the input end of PLC respectively with the output terminal of exsiccator gas phase temperature sensor, the output terminal of PLC connects display device (7).
2. fluidized bed dryer material moisture content on-line real-time measuremen device according to claim 1, is characterized in that: the output terminal of described PLC (6) be arranged on exsiccator air in and be connected with the steam control valve (5) on jet chimney between vapour source.
3. fluidized bed dryer material moisture content on-line real-time measuremen device according to claim 2, is characterized in that: the outer cover of described exsiccator gas phase temperature sensor is equipped with closed sheath.
4. fluidized bed dryer material moisture content on-line real-time measuremen device according to claim 3, is characterized in that: described exsiccator gas phase humidity sensor is provided with Teflon filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731114.3U CN205068126U (en) | 2015-09-21 | 2015-09-21 | Online real -time detection device of fluidized bed dryer material humidity ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731114.3U CN205068126U (en) | 2015-09-21 | 2015-09-21 | Online real -time detection device of fluidized bed dryer material humidity ratio |
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| Publication Number | Publication Date |
|---|---|
| CN205068126U true CN205068126U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520731114.3U Expired - Fee Related CN205068126U (en) | 2015-09-21 | 2015-09-21 | Online real -time detection device of fluidized bed dryer material humidity ratio |
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| CN (1) | CN205068126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105795502A (en) * | 2016-05-26 | 2016-07-27 | 福建武夷烟叶有限公司 | Redrying feeding and flavoring material moisture content and temperature controlling method |
| 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 |
-
2015
- 2015-09-21 CN CN201520731114.3U patent/CN205068126U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105795502A (en) * | 2016-05-26 | 2016-07-27 | 福建武夷烟叶有限公司 | Redrying feeding and flavoring material moisture content and temperature controlling method |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiaoming Inventor after: Yang Shengxing Inventor after: Zhang Xinbei Inventor before: Zhang Xiaoming Inventor before: Zhang Xinbei |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20180921 |