CN106323822A - Experimental device and method used for research on particle flow characteristic in bubbling fluidized bed - Google Patents
Experimental device and method used for research on particle flow characteristic in bubbling fluidized bed Download PDFInfo
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- CN106323822A CN106323822A CN201610653632.7A CN201610653632A CN106323822A CN 106323822 A CN106323822 A CN 106323822A CN 201610653632 A CN201610653632 A CN 201610653632A CN 106323822 A CN106323822 A CN 106323822A
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- 230000005587 bubbling Effects 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002245 particle Substances 0.000 title claims abstract description 30
- 238000011160 research Methods 0.000 title claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000008187 granular material Substances 0.000 claims description 47
- 229920002545 silicone oil Polymers 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 6
- 238000012805 post-processing Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010219 correlation analysis Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 12
- 238000000917 particle-image velocimetry Methods 0.000 description 10
- 238000005243 fluidization Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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Abstract
The invention discloses an experimental device and method used for research on a particle flow characteristic in a bubbling fluidized bed. The experimental device is composed of a PIV image processing system, a high-speed camera, a light source, a humidifier, a fixing support, the bubbling fluidized bed, experimental dry particles or wet particles, a wind-distribution plate, a wind chamber, a hot wind flow meter, a ventilating pipeline, a turbine flower meter, a gas valve and a fan; the bubbling fluidized bed is fixed to the fixing support, the humidifier is installed at the top of the bubbling fluidized bed, the light source is arranged obliquely above the bubbling fluidized bed, the high-speed camera is located at the front of the bubbling fluidized bed and connected with the PIV image processing system, the wind chamber is located at the bottom of the bubbling fluidized bed and connected with the bubbling fluidized bed through wind-distribution plate, the hot wind flow meter is installed close to a wind chamber inlet of the bubbling fluidized bed, the fan is connected with the wind chamber through the ventilating pipeline, and the turbine flow meter and the gas valve are installed on the ventilating pipeline. The experimental device and method can carry out research on a dry particle system and the wet particle flow characteristic at the same time.
Description
Technical field
The present invention relates to a kind of with bubbling fluidized bed as theoretical basis, it is possible to carry out dry particle system and wet granular stream simultaneously
The experimental provision of dynamic analysis and method.
Background technology
The fluid bed when speed of fluidizing gas exceedes the minimum fluidization velocity of granule in bed is referred to as " bubbling fluidized bed ".
Now, bed endoparticle system will no longer keep uniform and stable state, and bubble produced by fluidized-bed bottom will be through solid
Grain emulsion zone reaches bed face.The interior generation along with bubble of bed, the process gone round and begun again moved, grow up and rupture, the phase
Between strong bubbling phenomenon make the motion of granule become more violent, and particle system exist complicated mixing, reunion and
Segregation phenomenon.
For in actual production, particle system inevitably exists a certain amount of liquid.As far back as generation nineteen sixty, people
In commercial Application, proposed the fluidization problems of wet granular.Due to scale effect, liquid bridge power is at millimeter and micro-meter scale model
Can not ignore for inertia force in enclosing, which results in hydrodynamics behavior and the kinetic characteristic of wet granular system and do
The difference of particle system is very big, occurs the fluidization of granule to die down even and lost efficacy, and i.e. " going fluidization phenomenon " occurs: substantial amounts of wet
In granule forms firm agglomerate or caking, bed, bubble size reduces and grain fluidized required operating gas amount increase, even
The gas short circuit phenomenon of fixing gas passage is formed in fluid bed.This " going fluidization phenomenon " is by wet granular system
The hydrodynamic processes such as mixing, separation and heat and mass have a huge impact, thus affect design and the operation of fluid bed.
Understand and grasp microcosmic mechanism and the macrodynamics rule of Dual-Phrase Distribution of Gas olid in wet granular system in depth, as granule, granule gather
Group and the transient state of Jie's mesostructure such as bubble and time equal feature, for chemical reactor etc. design, run and optimization has emphatically
The practical significance wanted.
But bubbling fluidized bed endogenous dampness particle-motion property is carried out actual detection is a great problem.Therefore PIV is combined
(Particle image velocimetry, particle image velocimetry) furthers investigate in bed wet granular and wet in detail
Grain agglomerate Jie's mesostructure such as (bubble), for improving the design of existing fluid bed and operation it is critical that, help simultaneously
In understanding the endocorpuscular flow behavior of bubbling fluidized bed in depth, it is beneficial to improve scale and design more efficient industrial process.Cause
This, be particularly significant for designing a kind of experimental provision for studying bubbling fluidized bed endogenous dampness particle flow characteristics and method
's.
Summary of the invention
It is an object of the invention to provide a kind of experimental provision for bubbling fluidized bed endoparticle Study of Flow Characteristics and side
Method, it is possible to simultaneously carry out dry particle system and wet granular Study of Flow Characteristics.
It is an object of the invention to be achieved through the following technical solutions:
A kind of experimental provision for bubbling fluidized bed endoparticle Study of Flow Characteristics, including PIV image processing system, takes the photograph at a high speed
Camera, light source, humidifier, fixed support, bubbling fluidized bed, air distribution plate, air compartment, hot air flow gauge, ventilation shaft, turbine flow
Meter, gas valve and blower fan, wherein:
Described bubbling fluidized bed is fixed on fixed support；
Described humidifier is arranged on bubbling fluidized bed top；
Described light source is arranged on the oblique upper 45° angle of bubbling fluidized bed；
Described high-speed camera is positioned at bubbling fluidized bed front portion and is connected, to granule at bubbling fluidization with PIV image processing system
Mobility status in Chuan carries out the instantaneous shooting of constant duration altofrequency, obtains granule at bubbling fluidization finally by correlation analysis
Velocity field distribution situation in Chuan；
Described air compartment is inverted cone, is positioned at bottom bubbling fluidized bed, is connected with bubbling fluidized bed by air distribution plate；
Described hot air flow gauge is arranged close to the position of bubbling fluidized bed air compartment entrance；
Described blower fan is connected with air compartment by ventilation shaft；
Turbine flowmeter and gas valve are installed on described ventilation shaft.
A kind of method utilizing above-mentioned experimental provision research bubbling fluidized bed endoparticle flow behavior, comprises the steps:
One, experiment granule is uniformly filled in bottom bubbling fluidized bed；
Two, open high-speed camera, within bubbling fluidized bed is the most all taken in camera lens, regulate light source simultaneously, make to take the photograph at a high speed
The picture photographed in camera is enough clear to ensure the accuracy that later image processes；
Three, blower fan is opened, adjusting gas flow, observe the registration of turbine flowmeter simultaneously, wait between the time after registration is stably
Every reading gas flow, average after repeatedly reading；
Four, occur that cycle movement changes when flowing is stable and have taken sufficiently long time, i.e. bubbling bed granule, note simultaneously
The most overheated to blower fan temperature, first close blower fan, after granule is totally stationary, closing high-speed video camera；Shooting results is led
Enter in post processing computer, obtain particle flow characteristics.
In the present invention, experiment granule is dry granule or wet granular.
In the present invention, when granule is dry granule, it is drying regime in fluid mapper process should ensure that fluid bed.
In the present invention, when granule is wet granular, described wet granular is the mixture of dry granule and silicone oil, required silicone oil
Volume is the 0.1 ~ 5% of particle overall volume, adds a certain amount of silicone oil by humidifier in fluid mapper process in particle system,
Keep constant with the volume fraction of silicone oil in guarantee fluid bed.
Compared with other technologies, the invention have the advantages that
(1) in experimentation, the wet concentration silicone oil for the wet granular of mixing replaces: select the purpose of silicone oil to be its physical property
Matter with aqueous phase seemingly, but does not have volatility, is not related to the complex processes such as heat and mass, can substitute for water to study bubbling fluidization
Two-phase flow state in bed wet granular system.If selecting water for the research of wet granular flow behavior, then need to consider water
The complex heat transfer mass transport processes such as evaporation and mass transfer, owing to presently mainly studying for Cold simulating test environment, so being
Avoiding the interference that water is brought as wet granular research medium, the present invention selects silicone oil as experimental liquid medium.
(2) it is provided with the air compartment of inverted cone on the downside of bubbling fluidized bed air distribution plate, its object is to make fluidizing gas enter from pipeline
During entering bubbling fluidized bed air distribution plate, gas can realize even distributing wind in air compartment.
(3) from the current study, most research simple sets is more the experimentation of dry particle flow characteristics
On, and real process inevitably exists in particle system a certain amount of liquid, and the existence of liquid is special to particle flow
Property produce important impact.In order to make up disadvantage mentioned above, this experimental configuration is provided with humidifier apparatus, according to wanting of different operating modes
Asking can be to the particle system different amounts of liquid of various interpolation in experimentation, it is ensured that in experimentation, amount of liquid keeps substantially
Constant, therefore can more precisely realize the research to bubbling fluidized bed endogenous dampness particle flow characteristics.
(4) there is certain difficulty in the actual detection flowed at present for fluid bed endoparticle, and this is unfavorable for granule stream very much
The research of dynamic characteristic: the present invention selects PIV image processing system, when carrying out granule mobility status in bubbling fluidized bed waiting
Between be spaced the instantaneous shooting of altofrequency, finally by time all process the velocity field distribution situation obtaining granule in bubbling fluidized bed.
Utilize PIV image processing system granule flow process in bubbling fluidized bed, it is possible to effectively analyze wet granular at bubbling fluidization
Flow behavior in Chuan.
(5) hot air flow gauge is installed at air distribution plate, remeasures flow in bubbling fluidized bed porch, it is ensured that gas
The accuracy of body examination speed.
Accompanying drawing explanation
Fig. 1 is bubbling fluidized bed experimental provision pictorial diagram, in figure: 1-PIV image processing system, 2-high-speed camera, 3-
Light source, 4-humidifier, 5-fixed support, 6-bubbling fluidized bed, 7-bed endoparticle, 8-air distribution plate, 9-air compartment, 10-hot air flow
Meter, 11-ventilation shaft, 12-turbine flowmeter, 13-gas valve, 14-blower fan；
Fig. 2 is relative amount of liquid bubbling bed endoparticle motion when being 0.55%；
Fig. 3 is relative amount of liquid bubbling bed endoparticle motion when being 0.91%.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is further described, but is not limited thereto, every to this
Inventive technique scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, all should contain
In protection scope of the present invention.
Detailed description of the invention one: as it is shown in figure 1, present embodiment offer is special for bubbling fluidized bed endogenous dampness particle flow
The experimental provision of Journal of Sex Research is by PIV image processing system 1, high-speed camera 2, light source 3, humidifier 4, fixed support 5, bubble flow
Change bed 6, bed endoparticle (test with dry granule or wet granular) 7, air distribution plate 8, air compartment 9, hot air flow gauge 10, ventilation shaft 11,
Turbine flowmeter 12, gas valve 13 and blower fan 14 are constituted, wherein:
Described bubbling fluidized bed 6 is fixed on fixed support 5；
Described humidifier 4 is arranged on bubbling fluidized bed 1 top；
Described light source 3 is arranged on bubbling fluidized bed 6 oblique upper 45° angle；
Described high-speed camera 2 is positioned at bubbling fluidized bed 1 front portion and is connected with PIV image processing system 1, exists bed endoparticle 7
Mobility status in bubbling fluidized bed 6 carries out the instantaneous shooting of constant duration altofrequency, obtains in bed finally by correlation analysis
The granule 7 velocity field distribution situation in bubbling fluidized bed 7；
Described air compartment 9 is inverted cone, and for fluidizing gas even distributing wind, air compartment 9 is positioned at bottom bubbling fluidized bed 6, by cloth wind
Plate 8 is connected with bubbling fluidized bed 6；
Described hot air flow gauge 10 is arranged on the position of bubbling fluidized bed 6 air compartment 9 entrance；
Described blower fan 14 is connected with air compartment 9 by ventilation shaft 11；
Turbine flowmeter 12 and gas valve 13 are installed, wherein: turbine flowmeter 12 is near bubbling on described ventilation shaft 11
Fluid bed air compartment entrance.
The experimental provision work process of above-mentioned bubbling fluidized bed endogenous dampness particle flow characteristics research is as follows:
Gas is sent into by blower fan and is positioned at the air compartment bottom bubbling fluidized bed, and during this, gas is through sufficiently long ventilation
Pipeline, makes gas flowing attain full development.Turbine flowmeter is arranged on ventilation shaft and enters near bubbling fluidized bed air compartment
Mouthful position this measure can farthest reduce the impact on flow measurement of the pipeline on-way resistance, make measurement result closer to
Gas flow bottom bubbling fluidized bed, measures accurately and is conducive to the later stage to the bubbling fluidized bed endoparticle under identical operating mode
Flow regime is simulated calculating；Gas is uniformly sent in bubbling fluidized bed, to bed by the air distribution plate bottom bubbling fluidized bed
Endoparticle fluidizes；Before experiment starts, dry granule or the wet granular that mixes are uniformly filled in bottom bubbling fluidized bed,
Gas at bubbling fluidized bed bottom even cloth wind, under the effect of fluidizing gas granule in bubbling fluidized bed with gas motion；
Before granule motion starts, high-speed camera is opened, it is ensured that bubbling fluidized bed endoparticle range of movement is filled at a high speed just
In the middle of the picture of video camera.In shooting process, bubbling fluidized bed rear portion outer wall is stained with dark extinction paper, therefore reduces reality
The light disturbance caused during testing.
Points for attention:
(1) strictly controlled environment temperature and duration of experiment are answered, for ensureing the amount of liquid base of wet granular system under each operating mode
This is constant；
(2) picture quality of high speed camera shooting is heavily dependent on the lighting condition of bubbling fluidized bed, therefore, it is necessary to
The anterior of bubbling fluidized bed uses high-power search light to realize continuous print floodlighting, and the photograph that searchlight is to bubbling fluidized bed
Bright angle should be less than 45 °, reduces the light reflection on the plexiglas impact on image degradation；
(3) interference of ambient stray light should be reduced, on the one hand, arrange dark cloth at bubbling fluidized bed back, to absorb it as far as possible
The reflection light that his object is unnecessary, and due to indoor occupant walk about on bubbling fluidized bed glass produce inverted image, on the other hand,
Whole experimental facilities is placed in a dark room to avoid the interference of other veiling glare light sources.
Detailed description of the invention two: prepare the spheroidal particle of enough and appropriate a diameter of 2.50mm, and granule is uniformly filled
Bottom bubbling fluidized bed, open high-speed camera, within bubbling fluidized bed is the most all taken in camera lens, regulate light simultaneously
Source, the picture photographed in making video camera is enough clear to ensure the accuracy that later image processes；Open blower fan, regulate gas
Body flow, observes the registration of turbine flowmeter simultaneously, and after registration is stably, constant duration reads gas flow, repeatedly reads
Average afterwards；It is drying regime in ensureing fluid bed in fluid mapper process, when flowing is stable and have taken sufficiently long
After between, first close blower fan, after granule is totally stationary, closing high-speed video camera；Shooting results is imported post processing computer
In, the result such as VELOCITY DISTRIBUTION obtaining granule.
Detailed description of the invention three: prepare the spheroidal particle of enough and appropriate a diameter of 2.50mm, by particle overall volume and
Required amount of liquid 0.55% calculates the volume of required silicone oil, and granule silicone oil mix homogeneously；The granule mixed uniformly is filled
Bottom bubbling fluidized bed, open high-speed camera, within bubbling fluidized bed is the most all taken in camera lens, regulate light simultaneously
Source, the picture photographed in making video camera is enough clear to ensure the accuracy that later image processes；Open blower fan, regulate gas
Body flow, observes the registration of turbine flowmeter simultaneously, and after registration is stably, constant duration reads gas flow, repeatedly reads
Average afterwards；In particle system, a certain amount of silicone oil is added, to ensure fluid bed by humidifier in fluid mapper process
The volume fraction of interior silicone oil keeps constant, after flowing is stable and have taken the sufficiently long time, first closes blower fan, works as granule
After totally stationary, closing high-speed video camera；Being imported by shooting results in post processing computer, the VELOCITY DISTRIBUTION etc. obtaining granule is tied
Really (Fig. 2).
Detailed description of the invention four: prepare the spheroidal particle of enough and appropriate a diameter of 2.50mm, by particle overall volume and
Required amount of liquid 0.91% calculates the volume of required silicone oil, and granule silicone oil mix homogeneously；The granule mixed uniformly is filled
Bottom bubbling fluidized bed, open high-speed camera, within bubbling fluidized bed is the most all taken in camera lens, regulate light simultaneously
Source, the picture photographed in making video camera is enough clear to ensure the accuracy that later image processes；Open blower fan, regulate gas
Body flow, observes the registration of turbine flowmeter simultaneously, and after registration is stably, constant duration reads gas flow, repeatedly reads
Average afterwards；In fluid mapper process, keep constant by humidifier with the volume fraction of silicone oil in guarantee fluid bed, work as stream
Dynamic stability and after have taken the sufficiently long time, first closes blower fan, after granule is totally stationary, and closing high-speed video camera；
Shooting results is imported in post processing computer, the result (Fig. 3) such as VELOCITY DISTRIBUTION obtaining granule.
Claims (6)
1. the experimental provision for bubbling fluidized bed endoparticle Study of Flow Characteristics, it is characterised in that described experimental provision by
PIV image processing system, high-speed camera, light source, humidifier, fixed support, bubbling fluidized bed, experiment are with dry granule or wet
Grain, air distribution plate, air compartment, hot air flow gauge, ventilation shaft, turbine flowmeter, gas valve and blower fan are constituted, wherein:
Described bubbling fluidized bed is fixed on fixed support；
Described humidifier is arranged on bubbling fluidized bed top；
Described light source is arranged on the oblique upper of bubbling fluidized bed；
Described high-speed camera is positioned at the front portion of bubbling fluidized bed and is connected, to granule in bubble flow with PIV image processing system
The mobility status changed in bed carries out the instantaneous shooting of constant duration altofrequency, obtains granule in bubble flow finally by correlation analysis
Change the velocity field distribution situation in bed；
Described air compartment is positioned at bottom bubbling fluidized bed, is connected with bubbling fluidized bed by air distribution plate；
Described hot air flow gauge is arranged close to the position of bubbling fluidized bed air compartment entrance；
Described blower fan is connected with air compartment by ventilation shaft；
Turbine flowmeter and gas valve are installed on described ventilation shaft.
Experimental provision for bubbling fluidized bed endoparticle Study of Flow Characteristics the most according to claim 1, its feature exists
It is inverted cone in described air compartment.
Experimental provision for bubbling fluidized bed endoparticle Study of Flow Characteristics the most according to claim 1, its feature exists
It is arranged at the oblique upper 45° angle of bubbling fluidized bed in described light source.
4. the experimental provision research bubbling fluidized bed endoparticle flowing spy that a kind utilizes described in claim 1-3 any claim
The method of property, it is characterised in that described method step is as follows:
One, experiment granule is uniformly filled in bottom bubbling fluidized bed；
Two, open high-speed camera, within bubbling fluidized bed is the most all taken in camera lens, regulate light source simultaneously, make to take the photograph at a high speed
The picture photographed in camera is enough clear to ensure the accuracy that later image processes；
Three, blower fan is opened, adjusting gas flow, observe the registration of turbine flowmeter simultaneously, wait between the time after registration is stably
Every reading gas flow, average after repeatedly reading；
Four, after flowing is stable and cycle movement change occurs in bubbling bed granule, first close blower fan, when granule totally stationary it
After, closing high-speed video camera；Shooting results is imported in post processing computer, obtain particle flow characteristics.
The method of research bubbling fluidized bed endoparticle flow behavior the most according to claim 4, it is characterised in that described reality
Testing granule is dry granule or wet granular.
The method of research bubbling fluidized bed endoparticle flow behavior the most according to claim 5, it is characterised in that described reality
Testing granule when being wet granular, described wet granular is the mixture of dry granule and silicone oil, and the volume of required silicone oil is particle overall volume
0.1 ~ 5%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872318A (en) * | 2017-03-13 | 2017-06-20 | 中山大学 | A kind of device and method of high precision test haze particle |
| CN110006781A (en) * | 2019-04-23 | 2019-07-12 | 江苏大学镇江流体工程装备技术研究院 | A kind of Dual-Phrase Distribution of Gas olid experimental provision and method |
| CN113702082A (en) * | 2021-08-30 | 2021-11-26 | 苏州西热节能环保技术有限公司 | Experimental device and method for researching convection heat transfer characteristics of buried pipe in dense-phase region of fluidized bed |
| CN115046728A (en) * | 2022-05-12 | 2022-09-13 | 台州学院 | Device and method for measuring bubble coalescence and breakage events of straight pipe air flow distributor of gas-liquid biological bubbling fluidized bed |
| CN115178195A (en) * | 2022-07-12 | 2022-10-14 | 中国石油大学(华东) | Pressurized bubbling fluidized bed cold mould experimental device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872318A (en) * | 2017-03-13 | 2017-06-20 | 中山大学 | A kind of device and method of high precision test haze particle |
| CN110006781A (en) * | 2019-04-23 | 2019-07-12 | 江苏大学镇江流体工程装备技术研究院 | A kind of Dual-Phrase Distribution of Gas olid experimental provision and method |
| CN113702082A (en) * | 2021-08-30 | 2021-11-26 | 苏州西热节能环保技术有限公司 | Experimental device and method for researching convection heat transfer characteristics of buried pipe in dense-phase region of fluidized bed |
| CN115046728A (en) * | 2022-05-12 | 2022-09-13 | 台州学院 | Device and method for measuring bubble coalescence and breakage events of straight pipe air flow distributor of gas-liquid biological bubbling fluidized bed |
| CN115178195A (en) * | 2022-07-12 | 2022-10-14 | 中国石油大学(华东) | Pressurized bubbling fluidized bed cold mould experimental device |
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