CN109806734A - The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated - Google Patents
The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated Download PDFInfo
- Publication number
- CN109806734A CN109806734A CN201910080757.9A CN201910080757A CN109806734A CN 109806734 A CN109806734 A CN 109806734A CN 201910080757 A CN201910080757 A CN 201910080757A CN 109806734 A CN109806734 A CN 109806734A
- Authority
- CN
- China
- Prior art keywords
- fluidized bed
- bed
- uplink
- initial position
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Treating Waste Gases (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses the dynamic regulation methods of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated, the following steps are included: air distribution plate is connect by step 1) with electric pushrod, electric pushrod is connect with controller, simultaneously, angular transducer is set in uplink bed outer wall, angular transducer is connect with controller；Uplink bed is transferred to controller relative to the tilt angle data of its initial position by step 2) angular transducer, and controller calculates tilt angle of the air distribution plate with respect to its initial position relative to the tilt angle of its initial position according to uplink bed；Step 3) controller control electric pushrod pushes air distribution plate to reach the f (x) of step 2) calculating with respect to the inclination angle of its initial position, realizes the control being mutually distributed to fluidized bed endoparticle.The present invention improves recirculating fluidized bed endoparticle phase distributing homogeneity, so as to improve fluidized bed sulfur removal effectiveness.
Description
Technical field
The invention belongs to environmental protection technical fields, and in particular to desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated
Dynamic regulation method.
Background technique
Recirculating fluidized bed is widely used in the tail gas of marine engine as a kind of efficient chemical reaction equipment
In processing, to have the function that sulphur removal emission reduction.In actual condition, recirculating fluidized bed will appear different degrees of with the movement of ship
Inclination, causes sorbent particle to be deposited in the bottom and near wall of uplink bed, causes a fixing to the sulfur limitation effect of fluidized bed
It rings.
Recirculating fluidized bed just occurred in recent years as the exhaust treatment system of marine engine, and in theoretical research with
Experimental stage is that Japanese National Maritime Research Institute proposes earliest.Start both at home and abroad for recirculating fluidized bed as peculiar to vessel
Shortage is all also compared in the research of tail Flash Gas Compression Skid System, and there is presently no specifically for desulfurizing agent in open ocean fluidized bed at elevated point
Cloth uniformity dynamic regulation method.
Summary of the invention
The object of the present invention is to provide the dynamic regulation methods of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated, mention
High recirculating fluidized bed endoparticle phase distributing homogeneity, so as to improve fluidized bed sulfur removal effectiveness.
The technical scheme adopted by the invention is that in open ocean fluidized bed at elevated desulfurizing agent distributing homogeneity dynamic regulation
Method, fluidized bed are recirculating fluidized bed, and fluidized bed has uplink bed and down-flow fluidized bed using ECT, is provided with air distribution plate, this method in uplink bed
The following steps are included:
Air distribution plate is connect by step 1) with electric pushrod, and it is opposite in uplink bed that electric pushrod pushes air distribution plate to change it
The initial position of the tilt angle of its initial position, air distribution plate is vertical with uplink bed side wall, and by electric pushrod and controller
Connection, meanwhile, angular transducer is set in uplink bed outer wall, angular transducer is connect with controller；
Tilt angle data of the step 2) angular transducer by uplink bed relative to its initial position are transferred to controller, control
Device processed calculates the tilt angle of its opposite initial position of air distribution plate such as relative to the tilt angle of its initial position according to uplink bed
Under:
F (x)=- 0.01884x2+0.6443x+0.04653 (14)
In formula (14), f (x) is tilt angle of the air distribution plate with respect to its initial position, and x is uplink bed relative to its initial bit
The tilt angle set；
Step 3) controller control electric pushrod pushes air distribution plate to reach step 2) meter with respect to the inclination angle of its initial position
The f (x) of calculation realizes the control being mutually distributed to fluidized bed endoparticle.
The features of the present invention also characterized in that
The calculating process of step 2) formula (14), is specifically implemented according to the following steps:
Step 2.1) successively chooses tilt angle of the uplink bed of the differences such as multiple relative to its initial position, each uplink
Bed chooses tilt angle of multiple air distribution plates with respect to its initial position relative to the tilt angle of its initial position respectively, according to every
To uplink bed relative to its initial position tilt angle and air distribution plate with respect to its initial position tilt angle in modeling software
In establish recirculating fluidized bed model, and to recirculating fluidized bed model partition grid；
The recirculating fluidized bed model for having divided grid is imported Fluent software by step 2.2), according to recirculating fluidized bed reality
For the circulation of the tail gas and bed endoparticle phase that are discharged into uplink bed, selection Euler model is Two-phase flow's separation, selects the conservation of mass
Model and conservation of momentum model are mathematical model, gaseous species are selected to follow for air simulation tail gas, selection calcium carbonate granule simulation
Particle phase, setting simulation parameter and the number of iterations in ring fluidized bed, carry out simulation calculation, carbon in model are obtained after the completion of iteration
The volume fraction of sour calcium particle；
Step 2.3) is chosen by Techplot the poster processing soft in the recirculating fluidized bed model that each simulation calculation is completed
Calcium carbonate granule volume fraction as data point, the calcium carbonate granule of selection is by being located at equidistant more in uplink bed length direction
A cross section equivalent randomly selects；
The data point in each each section of recirculating fluidized bed model is imported MATLAB software by step 2.4), calculates each circulation
It is square to calculate calcium carbonate granule volume fraction in each recirculating fluidized bed model by the mean value γ of all data points in fluidized bed model
Difference is as follows:
In formula (15), σ is calcium carbonate granule volume fraction mean square deviation in each recirculating fluidized bed model；xjFor calcium carbonate
The volume fraction of particle；J=1,2,3 ..., N；N is the data point sum in each recirculating fluidized bed model；
It is quasi- that function is carried out to calcium carbonate granule volume fraction mean square deviation in recirculating fluidized bed model by MATLAB software
It closes, obtains function of the uplink bed relative to the tilt angle of tilt angle its initial position opposite with air distribution plate of its initial position
Relationship to get arrive formula (14).
Modeling software in step 2.1) is SoildWorks software.
Recirculating fluidized bed model structure is identical as actual recirculating fluidized bed, and recirculating fluidized bed model includes uplink bed under
Row bed, uplink bed one end offer inlet exhaust gas, are provided with air distribution plate in uplink bed at inlet exhaust gas, in air distribution plate and uplink bed
Wall connection, uplink bed one end are connected to by J-type valve with down-flow fluidized bed using ECT one end at inlet exhaust gas, and secondary sky is provided on J-type valve
Gas import, the down-flow fluidized bed using ECT other end are connected with cyclone separator, and cyclone separator has gas vent.
The simulation parameter being arranged in step 2.2) includes that calcium carbonate granule viscosity is 1.6 × 105~1.8 × 105kg/m-s、
The drag force model of calcium carbonate granule is Gidaspow model, calcium carbonate granule accumulation quality is 35~45kg, calcium carbonate granule heap
Product volume is 0.0260~0.0270m3, calcium carbonate granule stacking volume score be 0.6, inlet exhaust gas condition be speed import,
Inlet exhaust gas speed is 3~4m/s, exit condition is pressure export, Reynolds number is 2.8 × 104, gas turbulence intensity be 3%,
It is single order upstreame scheme, the number of iterations 200 that momentum, energy, which resolve format,.
In step 2.2), when momentum residual error stabilization and less than 1 × 10-3, while energy residual error is stable and less than 1 × 10-6
When, simulation calculation iteration is completed.
The beneficial effects of the present invention are:
The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated of the present invention, according to recirculating fluidized bed
The tilt angle for swinging inclination angle and controlling wherein air distribution plate of uplink bed, improves recirculating fluidized bed endoparticle and is mutually evenly distributed
Property, so as to improve fluidized bed sulfur removal effectiveness.
Detailed description of the invention
Fig. 1 is peculiar to vessel used in the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated of the present invention
The structural schematic diagram of motor exhaust process uniformity regulator control system；
Fig. 2 be in open ocean fluidized bed at elevated of the present invention in the dynamic regulation method of desulfurizing agent distributing homogeneity uplink bed and
The inclination schematic diagram of air distribution plate；
Fig. 3 is ciculation fluidized in the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated of the present invention
The structural schematic diagram of bed；
Fig. 4 is the direction of motion schematic diagram of particle phase and gas phase in uplink bed；
Fig. 5 is stress diagram of the particle mutually in uplink bed；
Fig. 6 is tilt angle its initial position opposite with air distribution plate of uplink bed relative to its initial position in embodiment
The function relation figure of tilt angle.
In figure, 1. inlet exhaust gas, 2. uplink beds, 3. gas vents, 4. cyclone separators, 5. down-flow fluidized bed using ECTs, 6.J type valve, 7.
Auxiliary air import, 8. sensors, 9. controlling terminals, 10. electric pushrods, 11. air distribution plates, 12. marine engines, 13. carbonic acid
Calcium particle.
Specific embodiment
The present invention is described in detail With reference to embodiment.
The dynamic regulation method of desulfurizing agent distributing homogeneity, fluidized bed are recycle stream in open ocean fluidized bed at elevated of the present invention
Change bed, fluidized bed has uplink bed 2 and down-flow fluidized bed using ECT 5, is provided with air distribution plate 11 in uplink bed 2, method includes the following steps:
For step 1) as shown in Figure 1, air distribution plate 11 is connect with electric pushrod 10, electric pushrod 10 pushes air distribution plate 11 to change
The tilt angle of its its opposite initial position in uplink bed 2, the initial position of air distribution plate 11 is vertical with 2 side wall of uplink bed,
And electric pushrod 10 is connect with controller 9, meanwhile, 2 outer wall of uplink bed be arranged angular transducer 8, angular transducer 8 with
Controller 9 connects, and establishes 12 vent gas treatment uniformity regulator control system of marine engine；
Tilt angle data of the step 2) angular transducer 8 by uplink bed 2 relative to its initial position are transferred to controller
9, controller 9 calculates the inclining with respect to its initial position of air distribution plate 11 relative to the tilt angle of its initial position according to uplink bed 2
Rake angle is as follows:
F (x)=- 0.01884x2+0.6443x+0.04653 (14)
In formula (14), f (x) is tilt angle of the air distribution plate 11 with respect to its initial position, and x is uplink bed 2 relative at the beginning of it
The tilt angle of beginning position, as shown in Fig. 2, θ is inclination angle of the uplink bed 2 relative to its initial position, α is that air distribution plate 11 is opposite
The inclination angle of its initial position；
Step 3) controller 9 controls electric pushrod 10 and air distribution plate 11 is pushed to reach step with respect to the inclination angle of its initial position
2) f (x) calculated, realizes the control being mutually distributed to fluidized bed endoparticle.
The calculating process of step 2) formula (14), is specifically implemented according to the following steps:
Step 2.1) successively chooses tilt angle of the uplink bed 2 of the differences such as multiple relative to its initial position, Mei Geshang
Row bed 2 chooses the tilt angle of its opposite initial position of multiple air distribution plates 11 relative to the tilt angle of its initial position respectively,
Tilt angle and air distribution plate 11 according to each pair of uplink bed 2 relative to its initial position exist with respect to the tilt angle of its initial position
Recirculating fluidized bed model is established in modeling software, modeling software is SoildWorks software, and to recirculating fluidized bed model partition
Grid；
Recirculating fluidized bed model structure is identical as actual recirculating fluidized bed, and recirculating fluidized bed model includes 2 He of uplink bed
Down-flow fluidized bed using ECT 5,2 one end of uplink bed offer inlet exhaust gas 1, are provided with air distribution plate 11, air distribution plate in uplink bed 2 at inlet exhaust gas 1
11 connect with 2 inner wall of uplink bed, and 2 one end of uplink bed is connected to by J-type valve 6 with 5 one end of down-flow fluidized bed using ECT at inlet exhaust gas 1, J-type
Auxiliary air import 7 is provided on valve 6,5 other end of down-flow fluidized bed using ECT is connected with cyclone separator 4, and cyclone separator 4 goes out with gas
Mouth 3.
The recirculating fluidized bed model for having divided grid is imported Fluent software by step 2.2), according to recirculating fluidized bed reality
For the circulation of the tail gas and bed endoparticle phase that are discharged into uplink bed 2, selection Euler model is Two-phase flow's separation, quality is selected to keep
Permanent model and conservation of momentum model are mathematical model, select gaseous species for air simulation tail gas, selection 13 mould of calcium carbonate granule
Particle phase, setting simulation parameter and the number of iterations 200 in quasi- recirculating fluidized bed, carry out simulation calculation, when momentum residual error is stablized
And less than 1 × 10-3, while energy residual error is stable and less than 1 × 10-6When, simulation calculation iteration is completed, and carbonic acid in model is obtained
The volume fraction of calcium particle 13.
The simulation parameter being arranged in step 2.2) includes that 13 viscosity of calcium carbonate granule is 1.6 × 105~1.8 × 105kg/m-s, calcium carbonate granule 13 drag force model be Gidaspow model, calcium carbonate granule 13 accumulate quality be 35~45kg, calcium carbonate
13 stacking volume of particle is 0.0260~0.0270m3, 13 stacking volume score of calcium carbonate granule be 0.6, inlet exhaust gas condition is
Speed import, inlet exhaust gas speed are 3~4m/s, exit condition is pressure export, Reynolds number is 2.8 × 104, gas turbulence is strong
Degree is 3%, momentum, energy resolving format are single order upstreame scheme, the number of iterations 200.
During the simulation calculation of recirculating fluidized bed model, it is necessary to assure be that gas-particle two-phase is following completely in fluidized bed
It solves and obtains under ring, and the gas-particle two-phase in fluidized bed is loop distribution in its natural state, avoids artificially going to be arranged
The distribution and circulation degree of gas-particle two-phase.As shown in figure 3, being followed from the point of view of the direction of motion by the gas-particle two-phase in recirculating fluidized bed
Ring fluidized bed is mainly uplink bed 2 and 5 two parts of down-flow fluidized bed using ECT, tail of the tail gas that wherein marine engine 12 is discharged from uplink bed 2
Gas import 1 is entered by air distribution plate 11, and the calcium carbonate granule 13 in uplink bed 2 moves upwards in uplink bed 2 together with tail gas；
The outside wall surface of uplink bed 2 is water-cooling wall, by diabatic process, final water wall absorption tail gas bring heat, and heat is passed
It is delivered to and is used to heat or generate electricity in ship；Down-flow fluidized bed using ECT 5 enables to calcium carbonate granule 13 and tail gas in bed to complete gas-solid in the circulating cycle
Separation, calcium carbonate granule 13 concentrate on downlink in down-flow fluidized bed using ECT 5 and are recycled into uplink bed 2 again by J-type valve 6.So
In the setting of Fluent software, parameter is set, 2 region of uplink bed near gas phase entrance is at the beginning of grain is mutually calcium carbonate granule 13
At beginning accumulation, then, the particle in the region is blown afloat by the air of gas phase entrance, and particle is as gas phase, that is, air is ciculation fluidized
It is recycled in bed, in an erect condition, in the constant situation of import gas phase, bed is completed in Dual-Phrase Distribution of Gas olid to recirculating fluidized bed after 10s
Interior abundant circulation.
Step 2.3) is chosen by Techplot the poster processing soft in the recirculating fluidized bed model that each simulation calculation is completed
Calcium carbonate granule 13 volume fraction as data point, the calcium carbonate granule 13 of selection is by being located at 2 length direction of uplink bed etc.
Away from multiple cross section equivalent randomly select；
The data point in each each section of recirculating fluidized bed model is imported MATLAB software by step 2.4), calculates each circulation
It is equal to calculate 13 volume fraction of calcium carbonate granule in each recirculating fluidized bed model by the mean value γ of all data points in fluidized bed model
Variance yields is as follows:
In formula (15), σ is 13 volume fraction mean square deviation of calcium carbonate granule in each recirculating fluidized bed model；xjFor carbonic acid
The volume fraction of calcium particle 13；J=1,2,3 ..., N；N is the data point sum in each recirculating fluidized bed model；
Function is carried out to 13 volume fraction mean square deviation of calcium carbonate granule in recirculating fluidized bed model by MATLAB software
Fitting obtains tilt angle of the uplink bed 2 relative to its opposite initial position of tilt angle and air distribution plate 11 of its initial position
Functional relation to get arrive formula (14).
By the above-mentioned means, in open ocean fluidized bed at elevated of the present invention desulfurizing agent distributing homogeneity dynamic regulation method,
According to the tilt angle for swinging inclination angle and controlling wherein air distribution plate 11 of recirculating fluidized bed uplink bed 2, recirculating fluidized bed is improved
Endoparticle phase distributing homogeneity, so as to improve fluidized bed sulfur removal effectiveness.
The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated of the present invention, step 2.2) is middle to be selected
Euler model is Two-phase flow's separation, as shown in figure 4, big arrow is vapor phase movement direction, small arrow is the particle phase direction of motion,
The particle mutually mainly effect by gas phase drag force, self gravity and buoyancy in uplink bed 2, but the gas phase of near wall is by wall
The effect of face resistance, near wall gas phase drag force is smaller, and gravity suffered by the particle phase near wall is greater than the drag force of gas phase, edge
Wall surface moves downward, this allows for the particle inside uplink bed 2 and is mutually taken up by gas phase, and subsequent a part of particle is mutually but in surrounding
Wall surface moves downward, and particle mutually recycles inside generation in uplink bed 2.Euler model is using particle as fluid analogy, it is believed that particle
The continuous media for existing and interpenetrating jointly with fluid, two it is identical handled under the coordinate system of Euler model, due to
The movement of fluid phase is the basis for studying two phase flow under the coordinate system of Euler model, therefore the present invention uses Euler model, makes
Obtain particle mutually has continuous volume fraction and speed in recirculating fluidized bed, and does not consider the mass exchange between two, Euler
Model meets the conservation of mass and momentum conservation equation simultaneously, as follows:
Formula (3) is gas phase mass-conservation equation, and formula (4) is solid phase mass-conservation equation, in formula (3) and formula (4), g expression
Solid phase, p indicate gas phase, and ε is volume fraction, and t is the time, and ρ is averag density, and x, y, z respectively indicates the x-axis, y-axis, z of coordinate system
Axis, w, u, v respectively indicate the velocity component of x, y, z axis, in the cell cube of calculating solid gas two-phase volume fraction and be 1；
Formula (5) is gas phase momentum conservation equation, and formula (6) is solid phase momentum conservation equation, in formula (5) and formula (6), xiTo answer
The Axial changes amount of power, β are drag coefficient, βgpIndicate drag coefficient of the gas phase relative to solid phase, βpgIndicate solid phase relative to gas
The drag coefficient of phase, F are lift,For stress tensor.
In the case where ignoring the change rate pulsation and unsteady associations of fluid phase density, granular mass, two phase flow
Middle particle is mutually mainly by drag force caused by gravity, gas phase, buoyancy and the particle lift that mutually itself collision, movement generate, such as
Shown in Fig. 5, calcium carbonate granule 13 receives gravity f respectively1, drag force f2With inertia force f3, particle is mutually main in analogue simulation considers
Gas phase drag force and particle phase self gravity, therefore the drag force model for choosing particle phase is Gidaspow model.
Embodiment
The present embodiment provides the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated, fluidized bed is
Recirculating fluidized bed, fluidized bed have uplink bed 2 and down-flow fluidized bed using ECT 5, are provided with air distribution plate 11 in uplink bed 2, this method includes following
Step:
Air distribution plate 11 is connect by step 1) with electric pushrod 10, and electric pushrod 10 pushes air distribution plate 11 to change it in uplink bed
The tilt angle of its opposite initial position in 2, the initial position of air distribution plate 11 is vertical with 2 side wall of uplink bed, and will be electronic
Push rod 10 is connect with controller 9, meanwhile, angular transducer 8 is set in 2 outer wall of uplink bed, angular transducer 8 and controller 9 connect
It connects；
Tilt angle data of the step 2) angular transducer 8 by uplink bed 2 relative to its initial position are transferred to controller
9, controller 9 calculates the inclining with respect to its initial position of air distribution plate 11 relative to the tilt angle of its initial position according to uplink bed 2
Rake angle is as follows:
F (x)=- 0.01884x2+0.6443x+0.04653 (14)
In formula (14), f (x) is tilt angle of the air distribution plate 11 with respect to its initial position, and x is uplink bed 2 relative at the beginning of it
The tilt angle of beginning position；
Step 3) controller 9 controls electric pushrod 10 and air distribution plate 11 is pushed to reach step with respect to the inclination angle of its initial position
2) f (x) calculated, realizes the control being mutually distributed to fluidized bed endoparticle.
The calculating process of step 2) formula (14), is specifically implemented according to the following steps:
Step 2.1) successively chooses tilt angle 15 degree of the uplink bed 2 relative to its initial position, 12 degree, 10 degree, 8 degree, 5
Degree, 2 degree, each uplink bed 2 choose air distribution plate 11 with respect to its initial position relative to the tilt angle of its initial position respectively
The degree of tilt angle -5, -2 degree, 2 degree, 5 degree, 8 degree, 10 degree, 12 degree, the inclination according to each pair of uplink bed 2 relative to its initial position
Angle and the tilt angle of its opposite initial position of air distribution plate 11 establish recirculating fluidized bed model in SoildWorks software, altogether
42, and to each recirculating fluidized bed model partition grid；
The recirculating fluidized bed model for having divided grid is imported Fluent software by step 2.2), according to recirculating fluidized bed reality
For the circulation of the tail gas and bed endoparticle phase that are discharged into uplink bed 2, selection Euler model is Two-phase flow's separation, selects momentum mould
Type and energy model are mathematical model, select gaseous species for air simulation tail gas, selection 13 simulation loop stream of calcium carbonate granule
Change particle phase, setting simulation parameter and the number of iterations 200 in bed, setting and each parameter selected are as shown in table 1, are emulated
It calculates, when momentum residual error stabilization and less than 1 × 10-3, while energy residual error is stable and less than 1 × 10-6When, simulation calculation iteration
It completes, obtains the volume fraction of calcium carbonate granule 13 in model.
1 parameter setting of table
Step 2.3) is chosen by Techplot the poster processing soft in the recirculating fluidized bed model that each simulation calculation is completed
Calcium carbonate granule 13 volume fraction as data point, the calcium carbonate granule 13 of selection takes 5 by being located at 2 length direction of uplink bed
The spacing in a section, adjacent two sections is 400mm, takes 50 data points at random on each section；
The data point in each each section of recirculating fluidized bed model is imported MATLAB software by step 2.4), calculates each circulation
It is equal to calculate 13 volume fraction of calcium carbonate granule in each recirculating fluidized bed model by the mean value γ of all data points in fluidized bed model
Variance yields is as follows:
In formula (15), σ is 13 volume fraction mean square deviation of calcium carbonate granule in each recirculating fluidized bed model；xjFor carbonic acid
The volume fraction of calcium particle 13；J=1,2,3 ..., N；N is the data point sum in each recirculating fluidized bed model；
Function is carried out to 13 volume fraction mean square deviation of calcium carbonate granule in recirculating fluidized bed model by MATLAB software
Fitting obtains tilt angle of the uplink bed 2 relative to its opposite initial position of tilt angle and air distribution plate 11 of its initial position
Functional relation, as shown in Figure 6 to get arrive formula (14).
Claims (6)
1. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated, the fluidized bed is ciculation fluidized
Bed, the fluidized bed have uplink bed (2) and down-flow fluidized bed using ECT (5), are provided with air distribution plate (11), feature in the uplink bed (2)
It is, method includes the following steps:
Air distribution plate (11) is connect by step 1) with electric pushrod (10), and electric pushrod (10) pushes air distribution plate (11) to change it upper
The tilt angle of its opposite initial position in row bed (2), the initial position of air distribution plate (11) is vertical with uplink bed (2) side wall,
And electric pushrod (10) is connect with controller (9), meanwhile, in uplink bed (2) outer wall, angular transducer (8) are set, it is described
Angular transducer (8) is connect with controller (9)；
Tilt angle data of the step 2) angular transducer (8) by uplink bed (2) relative to its initial position are transferred to control
Device (9) processed, controller (9) calculate air distribution plate (11) with respect to it relative to the tilt angle of its initial position according to uplink bed (2)
The tilt angle of initial position is as follows:
F (x)=- 0.01884x2+0.6443x+0.04653 (14)
In formula (14), f (x) is the tilt angle of air distribution plate (11) with respect to its initial position, and x is uplink bed (2) relative at the beginning of it
The tilt angle of beginning position；
Step 3) controller (9) control electric pushrod (10) pushes air distribution plate (11) to reach step with respect to the inclination angle of its initial position
The rapid f (x) 2) calculated, realizes the control being mutually distributed to fluidized bed endoparticle.
2. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated according to claim 1,
It is characterized in that, the calculating process of the step 2) formula (14) is specifically implemented according to the following steps:
Step 2.1) successively chooses tilt angle of the uplink bed (2) of the differences such as multiple relative to its initial position, each uplink
Bed (2) chooses the inclination angle of multiple air distribution plates (11) with respect to its initial position relative to the tilt angle of its initial position respectively
Degree, tilt angle and air distribution plate (11) the inclining with respect to its initial position according to each pair of uplink bed (2) relative to its initial position
Rake angle establishes recirculating fluidized bed model in modeling software, and to recirculating fluidized bed model partition grid；
The recirculating fluidized bed model for having divided grid is imported Fluent software by step 2.2), and practical according to recirculating fluidized bed is row
Enter the circulation of the tail gas and bed endoparticle phase in uplink bed (2), selection Euler model is Two-phase flow's separation, selects the conservation of mass
Model and conservation of momentum model are mathematical model, select gaseous species for air simulation tail gas, selection calcium carbonate granule (13) mould
Particle phase, setting simulation parameter and the number of iterations in quasi- recirculating fluidized bed, carry out simulation calculation, model are obtained after the completion of iteration
The volume fraction of middle calcium carbonate granule (13)；
Step 2.3) chooses the carbon in the recirculating fluidized bed model that each simulation calculation is completed by Techplot the poster processing soft
The volume fraction of sour calcium particle (13) is as data point, and the calcium carbonate granule (13) of the selection is by being located at uplink bed (2) length
The equidistant multiple cross section equivalent in direction randomly select；
The data point in each each section of recirculating fluidized bed model is imported MATLAB software by step 2.4), is calculated each ciculation fluidized
The mean value γ of all data points, it is square to calculate calcium carbonate granule (13) volume fraction in each recirculating fluidized bed model in bed model
Difference is as follows:
In formula (15), σ is calcium carbonate granule (13) volume fraction mean square deviation in each recirculating fluidized bed model；xjFor calcium carbonate
The volume fraction of particle (13)；J=1,2,3 ..., N；N is the data point sum in each recirculating fluidized bed model；
It is quasi- that function is carried out to calcium carbonate granule (13) volume fraction mean square deviation in recirculating fluidized bed model by MATLAB software
It closes, obtains inclination angle of the uplink bed (2) relative to the tilt angle of its initial position and air distribution plate (11) its opposite initial position
The functional relation of degree to get arrive formula (14).
3. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated according to claim 2,
It is characterized in that, the modeling software in the step 2.1) is SoildWorks software.
4. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated according to claim 2,
It is characterized in that, the recirculating fluidized bed model structure is identical as actual recirculating fluidized bed, the recirculating fluidized bed model structure
Including uplink bed (2) and down-flow fluidized bed using ECT (5), described uplink bed (2) one end is offered inlet exhaust gas (1), tail in the uplink bed (2)
Be provided at gas import (1) air distribution plate (11), described uplink bed (2) one end at inlet exhaust gas (1) by J-type valve (6) and
Down-flow fluidized bed using ECT (5) one end is connected to, and is provided with auxiliary air import (7) on J-type valve (6), down-flow fluidized bed using ECT (5) other end is connected with rotation
Wind separator (4), the cyclone separator (4) have gas vent (3).
5. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated according to claim 2,
It is characterized in that, the simulation parameter being arranged in the step 2.3) includes that calcium carbonate granule (13) viscosity is 1.6 × 105~1.8 ×
105kg/m-s, calcium carbonate granule (13) drag force model be Gidaspow model, calcium carbonate granule (13) accumulation quality be 35~
45kg, calcium carbonate granule (13) stacking volume are 0.0260~0.0270m3, calcium carbonate granule (13) stacking volume score be
0.6, inlet exhaust gas condition is speed import, inlet exhaust gas speed is 3~4m/s, exit condition is pressure export, Reynolds number is
2.8×104, gas turbulence intensity is 3%, momentum, energy resolving format are single order upstreame scheme, and the number of iterations is 200.
6. the dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated according to claim 2,
It is characterized in that, in the step 2.2), when momentum residual error stabilization and less than 1 × 10-3, while energy residual error it is stable and less than 1 ×
10-6When, simulation calculation iteration is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080757.9A CN109806734B (en) | 2019-01-28 | 2019-01-28 | Dynamic regulation and control method for distribution uniformity of desulfurizer in fluidized bed under ocean working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080757.9A CN109806734B (en) | 2019-01-28 | 2019-01-28 | Dynamic regulation and control method for distribution uniformity of desulfurizer in fluidized bed under ocean working condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109806734A true CN109806734A (en) | 2019-05-28 |
| CN109806734B CN109806734B (en) | 2021-09-10 |
Family
ID=66605446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910080757.9A Active CN109806734B (en) | 2019-01-28 | 2019-01-28 | Dynamic regulation and control method for distribution uniformity of desulfurizer in fluidized bed under ocean working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109806734B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009108A1 (en) * | 2002-07-09 | 2004-01-15 | Meier Paul F. | Enhanced fluid/solids contacting in a fluidization reactor |
| CN1490072A (en) * | 2003-08-26 | 2004-04-21 | 武汉凯迪电力股份有限公司 | Cyclic fluidizing dry flue desurlfurizing and duct collecting process by electric bag dust collector |
| CN101690867A (en) * | 2009-05-25 | 2010-04-07 | 中国石油大学(北京) | Tangential-flow and direct-flow composite air intake desulfurizing tower of half dry type circulating fluidized bed (CFB) |
| US20110031186A1 (en) * | 2009-08-04 | 2011-02-10 | Alternative Energy and Environmental Solutions, LLC | Calcium carbonate and calcium carbonate-containing materials for removing bioagents from water |
| CN104634708A (en) * | 2015-02-13 | 2015-05-20 | 西安石油大学 | Method for predicting density and particle size distribution of particles in fluidized bed based on computational fluid mechanics |
| CN106021638A (en) * | 2016-04-27 | 2016-10-12 | 东南大学 | Modelling method for bubbling fluidized bed based on random motion of bubbles and particles |
| US20160310896A1 (en) * | 2015-04-23 | 2016-10-27 | Rockwell Automation Technologies, Inc. | Predective emissions monitor systems and methods |
| CN107132156A (en) * | 2017-05-05 | 2017-09-05 | 西安石油大学 | A kind of analogy method of grain density and particle diameter dynamic change fluid bed |
| CN108564208A (en) * | 2018-04-02 | 2018-09-21 | 华能国际电力股份有限公司 | Optimization method capable of displaying operation cost of desulphurization device on line |
| CN108681624A (en) * | 2018-04-19 | 2018-10-19 | 同济大学 | A kind of new construction fuel tank shaking emulation mode based on fluent softwares |
| CN108758651A (en) * | 2018-07-11 | 2018-11-06 | 中国华能集团清洁能源技术研究院有限公司 | A kind of circulating fluidized bed boiler suitable for waste incineration |
| PL425905A1 (en) * | 2017-06-13 | 2018-12-17 | E.S.C.H. Engineering Service Center Und Handel Gmbh | Method and the device for removing harmful components from waste gases |
-
2019
- 2019-01-28 CN CN201910080757.9A patent/CN109806734B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009108A1 (en) * | 2002-07-09 | 2004-01-15 | Meier Paul F. | Enhanced fluid/solids contacting in a fluidization reactor |
| CN1490072A (en) * | 2003-08-26 | 2004-04-21 | 武汉凯迪电力股份有限公司 | Cyclic fluidizing dry flue desurlfurizing and duct collecting process by electric bag dust collector |
| CN101690867A (en) * | 2009-05-25 | 2010-04-07 | 中国石油大学(北京) | Tangential-flow and direct-flow composite air intake desulfurizing tower of half dry type circulating fluidized bed (CFB) |
| US20110031186A1 (en) * | 2009-08-04 | 2011-02-10 | Alternative Energy and Environmental Solutions, LLC | Calcium carbonate and calcium carbonate-containing materials for removing bioagents from water |
| CN104634708A (en) * | 2015-02-13 | 2015-05-20 | 西安石油大学 | Method for predicting density and particle size distribution of particles in fluidized bed based on computational fluid mechanics |
| US20160310896A1 (en) * | 2015-04-23 | 2016-10-27 | Rockwell Automation Technologies, Inc. | Predective emissions monitor systems and methods |
| CN106021638A (en) * | 2016-04-27 | 2016-10-12 | 东南大学 | Modelling method for bubbling fluidized bed based on random motion of bubbles and particles |
| CN107132156A (en) * | 2017-05-05 | 2017-09-05 | 西安石油大学 | A kind of analogy method of grain density and particle diameter dynamic change fluid bed |
| PL425905A1 (en) * | 2017-06-13 | 2018-12-17 | E.S.C.H. Engineering Service Center Und Handel Gmbh | Method and the device for removing harmful components from waste gases |
| CN108564208A (en) * | 2018-04-02 | 2018-09-21 | 华能国际电力股份有限公司 | Optimization method capable of displaying operation cost of desulphurization device on line |
| CN108681624A (en) * | 2018-04-19 | 2018-10-19 | 同济大学 | A kind of new construction fuel tank shaking emulation mode based on fluent softwares |
| CN108758651A (en) * | 2018-07-11 | 2018-11-06 | 中国华能集团清洁能源技术研究院有限公司 | A kind of circulating fluidized bed boiler suitable for waste incineration |
Non-Patent Citations (2)
| Title |
|---|
| 陈杰等: "摆动循环流化床装置颗粒相分析", 《热能动力工程》 * |
| 霍培栋: "布风结构对喷动流化床两相流动流动特性的影响研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109806734B (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11640145B2 (en) | Establishment of location correction system for processing seafood transportation displaced by wind waves and anti-accumulation drying processing method | |
| CN104899365B (en) | A kind of helicopter aerodynamic shape optimization method for reducing aerodynamic interference adverse effect | |
| CN111368487A (en) | Flow field processing method for simulating periodic movement of particles based on lattice Boltzmann model | |
| CN110398339B (en) | Condition determination method for satisfying similarity law of multistage full-free flight wind tunnel test | |
| CN110598168B (en) | Numerical simulation method and system for object entering water | |
| CN113408217B (en) | Gas-particle mixed flow numerical calculation method suitable for coarse particle flow | |
| Lau et al. | Bladderless swaying wire-driven robot shark | |
| CN107977542B (en) | Method for calculating interaction between waves and arc plate type breakwater | |
| Deodhar et al. | A case study in experimentally-infused plant and controller optimization for airborne wind energy systems | |
| CN109806734A (en) | The dynamic regulation method of desulfurizing agent distributing homogeneity in open ocean fluidized bed at elevated | |
| CN110705160A (en) | Airflow simulation calculation method of desulfurization and dust removal integrated desulfurization tower | |
| CN102831276B (en) | Method for calculating influence of environmental wind on thermal performance of ultra-large type natural draft cooling tower | |
| CN107992715B (en) | Arc plate type breakwater stress calculation method based on virtual boundary force method | |
| JP6870231B2 (en) | Nickel oxide manufacturing method, fluidized roasting furnace | |
| CN107602423A (en) | A kind of production technology and its device of powdered bay alcohol sulfuric ester sylvite | |
| CN116358821A (en) | Three-degree-of-freedom virtual flight wind tunnel test system | |
| CN210794360U (en) | Active dust suppression hopper | |
| CN103344092B (en) | Compound convection dryer | |
| CN111144012A (en) | Calculation method for ice particle deposition process in cold space | |
| Xiao et al. | Investigation on horizontal mixing of particles in dense bed in circulating fluidized bed (CFB) | |
| Skøien et al. | Modelling spatial surface pellet distribution from rotary pneumatic feed spreaders | |
| Joda et al. | A parametric study on the propulsion performance of MAVs flapping foils | |
| CN110427693A (en) | Fluid emulation calculation method in industrial reactor with spray gun | |
| Sood et al. | Statistical Optimization of Carbon Dioxide Capture Performance by Tri-Solvent System of MEA-DEA-PZ from the Stored Gas Reservoir | |
| CN211528372U (en) | Haze environment simulation device for anti-haze experiment of root-strengthening cough and asthma capsule |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |