Experimental device and method used for research on particle flow characteristic in bubbling fluidized bed
A technology of bubbling fluidized bed and flow characteristics, applied in flow characteristics, measuring devices, instruments, etc., can solve problems such as the actual detection of wet particle motion characteristics in bubbling fluidized bed, and achieve the effect of ensuring accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0034] Specific implementation mode one: as figure 1 As shown, the experimental device provided in this embodiment for the study of the flow characteristics of wet particles in a bubbling fluidized bed consists of a PIV image processing system 1, a high-speed camera 2, a light source 3, a humidifier 4, a fixed bracket 5, and a bubbling fluidized bed. Bed 6, particles in the bed (dry particles or wet particles for experiments) 7, air distribution plate 8, air chamber 9, hot air flow meter 10, ventilation pipe 11, turbine flow meter 12, gas valve 13 and fan 14, among which:
[0035] The bubbling fluidized bed 6 is fixed on the fixed support 5;
[0036] The humidifier 4 is installed on the top of the bubbling fluidized bed 1;
[0037] The light source 3 is arranged at an angle of 45° obliquely above the bubbling fluidized bed 6;
[0038] The high-speed camera 2 is located at the front of the bubbling fluidized bed 1 and is connected to the PIV image processing system 1 to take ...
specific Embodiment approach 2
[0049] Specific implementation method two: Prepare enough spherical particles with an appropriate amount of diameter of 2.50mm, and evenly fill the particles at the bottom of the bubbling fluidized bed, turn on the high-speed camera, and take the bubbling fluidized bed into the lens, and adjust the The light source makes the picture captured by the camera clear enough to ensure the accuracy of post-image processing; turn on the fan, adjust the gas flow, and observe the indication of the turbine flowmeter at the same time, and read the gas flow at intervals after the indication is stable. Take the average value after the second reading; ensure that the fluidized bed is in a dry state during the fluidization process, when the flow is stable and the shooting time is long enough, first turn off the fan, and when the particles are completely still, turn off the high-speed camera; The results are imported into the post-processing computer to obtain results such as particle velocity d...
specific Embodiment approach 3
[0050] Specific implementation method three: Prepare enough spherical particles with an appropriate amount of diameter of 2.50 mm, calculate the volume of the required silicone oil according to the total volume of the particles and the required liquid amount of 0.55%, and mix the particle silicone oil evenly; fill the mixed particles evenly in the At the bottom of the bubbling fluidized bed, turn on the high-speed camera, take the bubbling fluidized bed into the lens, and adjust the light source at the same time, so that the picture captured by the camera is clear enough to ensure the accuracy of the post-image processing; turn on the fan, Adjust the gas flow while observing the reading of the turbine flowmeter. When the reading is stable, read the gas flow at intervals, and take the average value after multiple readings; add a certain amount to the particle system through the humidifier during the fluidization process. Silicone oil, to ensure that the volume fraction of silico...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More