CN105498664B - A kind of control method of magnetically fluidized bed device - Google Patents
A kind of control method of magnetically fluidized bed device Download PDFInfo
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- CN105498664B CN105498664B CN201510953657.4A CN201510953657A CN105498664B CN 105498664 B CN105498664 B CN 105498664B CN 201510953657 A CN201510953657 A CN 201510953657A CN 105498664 B CN105498664 B CN 105498664B
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
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- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- B01J2219/00051—Controlling the temperature
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Abstract
The invention discloses the control method and corresponding test method that a kind of magnetic field intensity of magnetically fluidized bed device and temperature meet technical process requirement simultaneously.Magnetic field is produced present invention employs magnetically fluidized bed device and makes full use of the control method of its heat energy simultaneously, energy consumption is reduced, and is improved security and is realized and automatically controls.
Description
The application is to Chinese invention patent application number 201410670871.4,20 days November 2014 applying date, title
For《A kind of magnetically fluidized bed device and the control method and test method using the device》Divisional application.
Technical field
It is used for the control method and test method of chemistry, the magnetic fluidizer of bioengineering the present invention relates to a kind of, especially
It is related to control method and test method that a kind of utilization magnet coil produces the magnetic fluidizer in magnetic field.
Background technology
Reaction, mixing or separation are its main process in chemistry, bioengineering, and fluid bed is that one kind utilizes gas or liquid
Body makes solid particle be in suspended state by granular solids layer, promoting the circulation of qi solid phase of going forward side by side or liquid and solid phase reaction, mixing or point
From the device of process.For centrifugation, vibration harmony fluid bed, magnetically fluidized bed (Magnetically Fluidized
Bed, MFB) it is that additional magnetic field is introduced to common fluid bed, using solid-liquid phase processor of the magnetosensitive particle as bed medium
System, is the product that fluidization technology is combined with electromagnetic technique, has the advantages that the small, noise of vibration is small, especially as magnetic
The special shape of fluid bed --- magnetic stablizing bed, it is generally by magnet coil in axial direction, the space uniform not changed over time
Or the magnetic field that permanent magnet is produced, what is formed under this magnetic field only has the stable bed of faint motion, and bed shows as fixed bed shape
Formula, when there is the out-of-date bed of fluid stream to be expanded as piston, bed is loose, stably, bubble-free, the fluid bed of this expansion is exactly
It is magnetic stablizing bed.It is magnetic stablizing bed to have fixed bed and many advantages of fluid bed concurrently.The magnetic stablizing bed fluid bed that preferably overcomes is because of it
Back-mixing is serious and makes the shortcoming that conversion ratio is relatively low, particle is easily carried over, and the handling of particle are facilitated very much；Externally-applied magnetic field
Effect can efficiently control alternate back-mixing, and uniform voidage makes to be less prone to channel inside bed again；It is magnetic stablizing bed to compensate for
The shortcoming that caused pressure drop is excessive when fixed bed is using small particles, hot localised points easily occurs in exothermic reaction；It is simultaneously magnetic stablizing bed
Can the stable operation in relative broad range, acceptable fully bubble crushing improvement interphase mass transfer.
It is well known that magnet coil can not only produce magnetic field, while also producing heat, and the heat energy of its generation is utilized simultaneously
Magnetically fluidized bed device have its operation and test method at home and abroad yet there are no research.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the first object of the present invention is to provide one kind and made now
The magnetically fluidized bed device of its heat energy produced is utilized while some magnet coil generation magnetic field.
The second object of the present invention is to provide a kind of magnetic field for producing the magnetically fluidized bed device and heat energy is met simultaneously
The control method of technical process requirement.
The third object of the present invention is to provide a kind of acquisition magnetically fluidized bed device characterization and generation meets technical process
It is required that the test method of magnetic field intensity.
Technical scheme：In order to solve the above technical problems, the invention provides a kind of magnetically fluidized bed device, including fluid bed
Body, one group be located at outside magnetically fluidized bed body or some groups of magnet coils, the controllable electric power being connected with magnet coil, controller,
Fluidized state instrument and thermometer, the flow straightener being connected respectively with fluidized bed body；The fluid bed is provided with a fluid issuing and stream
Body import, fluid bed top is provided with an exhaust outlet, and flow straightener is located at fluid inlet, and lower section is provided with a sieve plate, institute in fluid bed
State and a magnetic-particle bed is disposed with above sieve plate, the controllable electric power, fluidized state instrument, thermometer difference, flow straightener and control
Device processed is connected, and the fluid bed is provided with a heat-conducting layer with magnet coil inner ring contact portion.
Further, in order to prevent the heat losses of magnet coil generation, the magnet coil is externally provided with a heat-insulation layer, protects
Wrapped up with dark film in the outside of warm layer；
Further, the present invention provides a kind of optimization magnetically fluidized bed device, and the magnet coil quantity is one group, electromagnetic wire
A cooling sandwith layer is provided between circle and heat-insulation layer, cooling sandwith layer is exported provided with a cooling medium entrance and cooling medium, cooling
Provided with a cooling electric control valve at medium inlet, cooling electric control valve is connected with controller.
Further, the present invention provides another optimization magnetically fluidized bed device, and the magnet coil quantity is some groups, often
Group coil is connected with corresponding controllable electric power, and the exhaust outlet, which is provided with a drain tap, the fluid inlet, is provided with one
Bed bottom valve, an inlet valve is provided with flow straightener end, is provided between fluid issuing and flow straightener in a return duct, return duct
Provided with a return valve, the drain tap, bed bottom valve, inlet valve, return valve are respectively connected with controller.
Further, the fluidized state instrument is made up of one or several state sensors, signal transmitting device, and signal becomes
Send device to be connected with one or several state sensors, controller, state sensor can for pressure sensor, differential pressure pick-up,
Flowmeter, search coil, capacitance probe, Hall sensor, Hall sensor are commonly used to measure magnetic induction intensity, and magnetic induction
Intensity changes with magnetic conductivity, when Hall sensor is installed in the swollen of the magnetic fluid that technical process or experiment are determined outside fluidized bed body
When at swollen height, due to the fluid that whether is magnetic at this, then the magnetic conductivity at this is different, therefore can detect that the expansion of magnetic fluid is high
Degree, state sensor is preferred to use Hall sensor.
Further, the thermometer is made up of temperature sensor, signal transmitting device, signal transmitting device and TEMP
Device, controller connection, the preferred IC temperature sensors of temperature sensor when temperature is less than 150 degree Celsius.
Further, one group of magnet coil, every group of magnet coil is made up of two coils, and the number of turns of two coils is excellent
It is identical to select scheme, and winding method is preferred to use Double-wire parallel wound mode coiling, and two coil shapes are may be such that using this mode coiling
Into identical magnetic field.
The magnetically fluidized bed device that the present invention is provided, wherein：If the controllable electric power is adjusted by power input, main line power supply
Circuit, power control circuit, adjustment signal interface are some to be constituted to power output end, per road its importation of power source regulating circuit
Connected with power input, the two wires of its output is connected with power output end one pair of which, it is connected with power control circuit, electricity
Source circuit for regulating and controlling and every road power source regulating circuit and adjustment signal orifice, power input termination civil power, if main line power supply is adjusted
The output voltage polarity of the economize on electricity road power source regulating circuit that is at least two-way and half is convertible, it is some to power output end with
Each coil connection in described one group or some groups of magnet coils, connection can individually connect for a pair of output with a coil
It can be connected for a pair of output with several coils, the top and terminal of each equidirectional coiling of coil are defeated with power output end respectively
The positive pole of corresponding power output end and negative pole connection when going out polarity of voltage for positive polarity, the controllable electric power pass through adjustment signal
Interface is connected with the controller, and adjustment signal interface is by the controller Suo Famei roads output voltage and polar signal power transmission source
Circuit for regulating and controlling, power control circuit Zai Duimei roads power source regulating circuit is regulated and controled, and is connected corresponding to the power source regulating circuit of Shi Mei roads
The voltage and polarity of output needed for logical power output end exports the controller Suo Fagai roads, adjustment signal interface are preferred to use
485 communication interfaces；
The magnetically fluidized bed device of the present invention, wherein：Optional a set of or some set cooling jackets, cooling jacket bottom is opened
If cooling medium outlet or entrance, cooling jacket top and with the outlet of bottom cooling medium or entrance into opening up cold at 180 degree angle
But media outlet or entrance, porch are connected to a cooling electric control valve, and cooling electric control valve is connected with controller, in cooling jacket
Circle is good with its contact surface heat conduction, and cooling jacket is preferably installed in magnet coil outer ring, and cooling medium is preferably water.
The magnetic field intensity and temperature of above-mentioned magnetically fluidized bed device meet the control method of technical process requirement simultaneously, and it has
Body step includes as follows：
(1) controller presets magnetically fluidized bed device configuration magnet coil, thermometer, fluidized state instrument, cooling
Electric control valve situation, each group magnet coil and each thermometer, each fluidized state instrument, each cooling electric control valve corresponding relation, technique
Cross the temperature of range request magnetically fluidized bed device each magnet coil generation and the value and tolerance value of magnetic field intensity, observing and controlling interval
Time, current first group of magnet coil of observing and controlling；
(2) the controller collection and preservation corresponding temperature instrument and correspondence fluidized state instrument detected value；
(3) controller compares the temperature and field strength values of the setting of this group of magnet coil and corresponding temperature instrument and corresponding
Fluidized state instrument detected value simultaneously tries to achieve deviation, and setting value (optimum value of the setting value according to needed for produce reality) is bigger than detected value
For negative bias difference, setting value smaller than detected value is positively biased difference；
(4) deviation is sentenced in tolerance value, (5) are gone to step, otherwise according to the different situations of gained deviation, the control
Device processed is proceeded as follows：
Temperature and magnetic field intensity deviation are all negative bias difference, controller control controllable electric power connection one group of electromagnetic wire of correspondence
Two coils two of circle are positive polarity to output end output voltage polarity, improve output end proportional to magnetic field intensity deviation
Magnitude of voltage, control correspondence cooling electric control valve is closed, and magnetic field intensity and temperature that magnet coil is produced is increased simultaneously；
Temperature and magnetic field intensity deviation are all positively biased difference, controller control controllable electric power connection one group of electromagnetic wire of correspondence
Two coils two of circle are positive polarity to output end output voltage polarity, reduce the output end magnitude of voltage proportional to deviation,
Control correspondence cooling electric control valve is closed, and magnetic field intensity and temperature that magnet coil is produced is reduced simultaneously；
Temperature deviation value is positively biased difference, and magnetic field intensity deviation is negative bias difference, controller control controllable electric power connection
Two coils two of one group of magnet coil of correspondence are positive polarity to output end output voltage polarity, improve output end and magnetic field intensity
The proportional magnitude of voltage of deviation, control correspondence cooling electric control valve is opened, the magnetic field intensity increase for producing magnet coil, temperature
Degree reduces；
Temperature deviation value is negative bias difference, and magnetic field intensity deviation is positively biased difference, controller control controllable electric power connection
Two coils two of one group of magnet coil of correspondence are a positive polarity, a negative polarity, positive pole to output end output voltage polarity
Property output end output voltage be more than negative polarity output output voltage, the absolute difference and magnetic of two pairs of output end output voltage values
Field intensity deviation is inversely proportional, and control correspondence cooling electric control valve is closed, and reduces the magnetic field intensity that magnet coil is produced, temperature
Degree increase；
(5) by the observing and controlling interval time delay of setting；
(6) differentiate whether current observing and controlling is last group of magnet coil:It is, if first group of magnet coil of current observing and controlling, turns
Step
(2)；Otherwise, if next group of magnet coil of current observing and controlling, goes to step (2).
Further, the controller storage temperature instrument described in step (1) and correspondence fluidized state instrument detected value are set
Bound, the controller described in step (3) carries out taking sound and light alarm, prompter when bound judges and exceeded to detected value
Work is operated, until shearing device power supply emergency measure.
Further, in the step (1) increase preserve the different technological requirement magnetically fluidized bed device of different time sections each
Magnet coil produce temperature and magnetic field intensity value and tolerance value, the controller described in step (3) according to it is current when
Between section obtain the value and tolerance value of temperature that each corresponding magnet coil produces and magnetic field intensity.
Further, the controller described in step (3) tries to achieve deviation according to preceding detected value several times that is current and preserving,
Controller from that continuously can try to achieve the rate of change of deviation rate of change and deviation rate of change in detected value several times, so as to can determine whether
Go out the variation tendency of control object, improve Control platform.
It is made in magnetically fluidized bed device with after technical process requirement parameter determination, generation satisfaction is provided for magnetically fluidized bed device
The problem of magnetic field intensity of technical process requirement is a difficulty, is this particularly in the case where that can not observe bed body inner case
Invention provides a kind of test method.Magnetic stablizing bed bed undergoes the poly- shape of magnetic, chain with the magnetic field intensity of application, dissipated from high to low
Granular three kinds of expansions shape, expansion height from low to high, is operated under chain type state, and particle lines up chain, the sky between chain and chain
Gap is difficult to form channel than more uniform, and liquid-solid contact is good, while magnetic stablizing bed when being operated under chain type state, bed is to bubble
Fragmentation it is obvious, bubble is fractured into many minute bubbles when passing through bed, and liquid phase interphase product is greatly improved, favorably
In gas-liquid mass transfer, chain type state is generally selected as mode of operation, and the fluidized state instrument Hall sensor is installed in fluid bed
During external chain type state at the expansion height of magnetic fluid, it can be characterized using following methods and generation meets technical process and requires magnetic
Field intensity.
A kind of to obtain magnetically fluidized bed device characterization and produce the test method for meeting technical process requirement magnetic field intensity, it has
Body step includes as follows：
(1) controller controls controllable electric power to export maximum voltage value to magnet coil, and collection preserves fluidized state instrument
Hall sensor detected value simultaneously demarcates value of this value for nonmagnetic fluid at Hall sensor installing, and setting technical process requires stream
The flow velocity of fluidized bed body fluid, by this fluid incoming fluid import；
(2) controller controls controllable electric power to export the voltage gradually reduced, the voltage reduced every time to magnet coil
It is worth maximum voltage value is exported to magnet coil for controllable electric power 1/10th, every time after reduction voltage, enters line delay, preferably prolong
When the time be 5 seconds；
(3) collection preserves fluidized state instrument Hall sensor detected value, seeks the difference of this detected value and last time detected value,
Until difference is more than zero；Now the controller control controllable electric power reduces voltage again, and the magnitude of voltage of reduction is identical with last time,
Delay 5 seconds, gathers fluidized state instrument Hall sensor detected value, tries to achieve this detected value and the nonmagnetic fluid detection value of demarcation
And again divided by 2, its quotient just can be used for characterizing the magnetic field intensity for meeting technical process requirement, call magnetic field intensity characterization value in the following text；
(4) controller controls controllable electric power to export the voltage being stepped up, each elevated voltage to magnet coil
It is worth for the adjustable minimum step amount magnitude of voltage of controllable electric power, every time after rise voltage, enters line delay, preferably delay time is 5 seconds, is adopted
Collect fluidized state instrument Hall sensor detected value, until detected value is less than magnetic field intensity characterization value, the now controller control
Controllable electric power exports the magnitude of voltage of its last time output to magnet coil, and this magnitude of voltage will with regard to magnet coil can be made to produce technical process
The magnetic field intensity asked.
The magnetically fluidized bed device characterization and generation meet the test method that technical process requires magnetic field intensity, in controllable electric
Source, also can be using the method for stepping up magnitude of voltage on the step of magnet coil output voltage values.
Beneficial effect：The higher sewage upflow velocity of the magnetically fluidized bed device that the present invention is provided makes particle keep suspension
State, while water velocity higher around particle makes remover mass transfer between liquid and particle surface good, adheres to its interior table
Bacterial biof iotalm is more stable on face, is difficult to be influenceed and come off by hydraulics, less there are problems that stirring damage biological film,
Greatly improve the treatment effeciency of sewage；Considerably reduce device volume.Because the present embodiment employs magnetically fluidized bed device
Produce magnetic field and make full use of the control method of its heat energy simultaneously, reduce energy consumption, improve security and realize and automatically control.
The magnetic field intensity based on magnetically fluidized bed device and temperature of the offer of the present invention meet technical process requirement simultaneously
Control method, the offer magnetically fluidized bed plant running technological parameter that can more prepare, and present invention also offers can not
A kind of acquisition magnetically fluidized bed device characterization is provided under observation bed body inner case and generation meets technical process and requires that magnetic field is strong
The test method of degree.
Brief description of the drawings
Fig. 1 constitutes schematic diagram for the cross-section structure and system of apparatus of the present invention embodiment one.
Fig. 2 constitutes schematic diagram for the cross-section structure and system of apparatus of the present invention embodiment two.
Fig. 3 is apparatus of the present invention controllable power supply circuit schematic diagram.
Fig. 4 meets the control method schematic procedure frame of technical process requirement for the magnetic field intensity and temperature of the present invention simultaneously
Figure.
Fig. 5 is that the sign of the present invention and generation meet the test method schematic procedure frame that technical process requires magnetic field intensity
Figure.
In figure：1- fluidized bed bodies；2- beds；3- fluid inlets；4- fluid issuings；5- magnet coils；6- thermometers；7-
Fluidized state instrument；8- controllable electric powers；9- controllers；10- heat-insulation layers；11- cooling jackets；12- cooling medium inlets；
13- cooling mediums are exported；14- cools down electric control valve；15- sieve plates；17- flow straighteners；18- exhaust outlets；20- return valves；21- enters
Penstock；22- bottom valves；23- drain taps；24- return ducts.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Embodiment one：
Such as Fig. 1, the present embodiment is anaerobism magnetically fluidized bed sulphur autotroph reaction unit, for the nitric acid gone in water removal simultaneously
Salt and phosphorus.Device includes：Bed body 1, bed 2, fluid inlet 3, fluid issuing 4, one group of magnet coil 5, thermometer 6, one
It is individual fluidized state instrument 7, controllable electric power 8, controller 9, heat-insulation layer 10, cooling jacket 11, cooling medium outlet 12, cold
But media outlet 13, one cooling electric control valve 14, sieve plate 15, flow straightener 17, exhaust outlet 18.
Bed body 1 is made up of upper cover, cylinder, low head；Install fluid inlet 3, upper cover installing fluid in low head bottom
Outlet 4 and exhaust outlet 18, fluid issuing 4 are made built with screen pack, upper cover, low head of transparent organic glass, and cylinder is used
Aluminium makes；Bottom installs sieve plate 15 in sieve plate 15, cylinder and is fitted with magnetic-particle bed 2 in cylinder；Flow straightener 17 is used
Measuring pump with 485 communication interfaces；The expansion height installing one of the outer magnetic fluid determined by technical process or experiment of cylinder
The Hall sensor of individual fluidized state instrument 7, Hall sensor is connected to a micro controller, and the signal that micro controller is inputted to this sensor becomes
It is changed to data signal and multiple repairing weld takes after average and to send controller 9 by 485 communication interfaces；Cylinder outer middle part installing one and cylinder
IC temperature sensors in the good thermometer 6 of the closely connected heat conduction of external surface, are conducive to improving its anti-electricity using IC temperature sensors
Magnetic disturbance performance, temperature sensor is connected to a micro controller, and the signal that micro controller is inputted to this sensor is transformed to data signal simultaneously
Multiple repairing weld takes after average and to send controller 9 by 485 communication interfaces；There is controlable electric current as shown in Figure 3 in controllable electric power 8；Can
Controlling power supply 8 has two pairs of power output ends, exports variable DC voltage and one pair of which polarity is variable, controllable electric power 8 passes through
485 communication interfaces receive the voltage and polarity number of output needed for the tunnels of 9 Suo Fa of controller bis-；One group of magnet coil 5 is enclosed on bed body 1
It is on body and good with the heat conduction of barrel outer surface contact surface, magnet coil 5 by two number of turns it is identical and using Double-wire parallel wound mode around
Coil processed composition, the positive pole and negative pole of the top of two coils with terminal respectively with a pair of power output ends in controllable electric power 8 is connected；
Cooling the present embodiment of electric control valve 14 uses magnetic valve, requires that high occasion can use the valve of regulating flow quantity, a micro controller in control
It is controlled by noncontacting switch, micro controller connects 485 communication interfaces and receives the control that controller 9 issues cooling electric control valve 14
Signal；Controller 9 uses industrial control computer, and industrial control computer passes through 485 communication interfaces and fluidized state instrument 7, temperature
Degree instrument 6, controllable electric power 8, cooling electric control valve 14 and measuring pump are mutually communicated, and industrial control computer has installed control journey in advance
Data needed for sequence and control, set interface, test interface, control runnable interface, improper emergent interface, so equipped with artificial parameter
The control method for meeting technical process requirement simultaneously according to magnetic field intensity and temperature as described in Figure 4 afterwards is operated.
The bed 2 that the present embodiment is used can make sulphur autotrophic denitrification bacterial respiratory nitric acid for natural magnetic iron ore particle
Root denitrogenation, such bacterium is using natural magnetic iron ore as the energy in addition, and the metabolite of natural magnetic iron ore is used for dephosphorization, realizes life
Thing denitrogenation is coupled naturally with chemical denitrogenation, and bed 2 and autotrophic denitrification bacterium are in fluidisation under the magnetic fields of magnet coil 5
State, is sufficiently mixed.Water after processing equipped with screen pack from fluid issuing 4 through flowing out.The nitrogen produced in denitrification process
Gas is passed through a liquid seal device by the discharge of exhaust outlet 18.
It is that 0.1-2mm natural magnetic iron ore particle and the anaerobic sludge of oriented domestication are mixed by particle diameter, from exhaust outlet
18 load bed body 1, through soaking after a while, it is found that natural magnetic iron ore particle surface has the generation of biological attachment thing, you can recognize
For biofilm success, steady load operation can be entered.Now industrial control computer sets interface to input this reality into artificial parameter
Apply a technical process and require that temperature value is 30~35 degree Celsius, input the resistance value of the single coil of magnet coil 5 and according to coiling
The maximum voltage value tried to achieve of the maximum current value of magnet coil 5 that determines of wire diameter, input according to accessing pending water pollution situation,
The accessing pending water flow velocity that the factorial experiments such as clearance and fluid bed situation are determined, this flow velocity is set to measuring pump, and accessing pending water is led to
Cross measuring pump and bed body 1 is flowed into from fluid inlet 3 with stable flow velocity；Industrial control computer enters test interface and performs such as to scheme
The program of the test method establishment of magnetic field intensity shown in 5, such as program end of run does not obtain and meets technique mistake available for sign
The magnetic field intensity of range request, you can the magnitude of voltage that control power supply 8 is exported to magnet coil 5 is zero, and industrial control computer reports an error, no
The magnitude of voltage for then keeping controllable electric power 8 to be exported to magnet coil 5, using magnetic field intensity characterization value as magnetic field intensity setting value, and
The execution of control runnable interface is transferred to want while meeting technical process with the magnetic field intensity and temperature of magnetically fluidized bed device generation
The program for the control method establishment asked, now this Shi Shi Installed are put can obtain water treatment technology mistake under industrial control computer control
Cheng Suoxu magnetic field intensity and temperature, carries out steady load operation, handles water up to standard and is flowed out at fluid issuing 4.Due to fluidisation
What the detected value of state instrument 7 was characterized is the opposite number of actual magnetic field strength size, i.e. the bigger actual magnetic field strength of detected value is smaller, inspection
The smaller actual magnetic field strength of measured value is bigger, therefore defines setting value in a control program than detected value greatly positively biased difference, setting value
Smaller than detected value is negative bias difference.In steady load operation, such as thermometer 6, the detected value of fluidized state instrument 7 occur more than setting
Normal value when, industrial control computer is automatically into improper emergent interface and carries out sound and light alarm and prompting is artificial
Operation, until the emergency measure such as shearing device power supply.
The present embodiment technical process requires that temperature value is 10~45 degree Celsius, and accessing pending water temperature value is 15 degree Celsius left
The right side, technical process requires that temperature value and accessing pending water temperature value are more or less the same with usual room temperature, and institute's calorific requirement is little；Cooling jacket
11 are arranged on the outer ring of magnet coil 5, the diameter of magnet coil 5 is diminished, magnetic circuit also diminishes, magnetic field intensity increase, resistance
Diminish, the heat of generation also diminishes, magnet coil 5 is not produced excessive heat in the case where meeting magnetic field intensity；In order to
The few heat for enabling magnet coil 5 to produce is fully used, and cooling jacket outer surface is equipped with heat-insulation layer 10；May in summer
Accessing pending water need to be passed through in cooling jacket 11 as cooling medium to be cooled, so cooling hardly consumes the energy.
The present embodiment makes full use of the advantage of magnetically fluidized bed technology, particle is kept outstanding using higher sewage upflow velocity
Floating state, while water velocity higher around particle makes remover mass transfer between liquid and particle surface good, adheres to it
Bacterial biof iotalm is more stable on inner surface, is difficult to be influenceed and come off by hydraulics, less there is stirring damage biological film
Problem, greatly improves the treatment effeciency of sewage；Considerably reduce device volume.Because the present embodiment employs magnetically fluidized bed
Device produces the control method that magnetic field makes full use of its heat energy simultaneously, reduces energy consumption, improves security and realizes automatic
Control.
Embodiment two:
Such as Fig. 2, the present embodiment is by the use of magnetically fluidized bed as chemical mixing reaction unit, for the dirt for the treatment of of Nitrobenzene class
Water.Device includes：Bed body 1, bed 2, fluid inlet 3, fluid issuing 4, three groups of magnet coils 5, thermometer 6, streams
Change state instrument 7, three controllable electric powers 8, controller 9, heat-insulation layer 10, sieve plate 15, flow straightener 17, exhaust outlet 18, return valve 20,
Inlet valve 21, bed bottom valve 22, drain tap 23, return duct 24.
Bed body 1 is made up of upper cover, cylinder, low head；Upper cover installs fluid issuing 4 and exhaust outlet 18, exhaust outlet 18
The import of drain tap 23 is connected to, low head bottom installing fluid inlet 3, fluid inlet 3 is connected to threeway first, other the two of threeway first
Individual joint connects the import of a bottom valve 22 and the outlet of flow straightener 17 respectively, and the import of flow straightener 17 is connected to another threeway second,
Two other joint of threeway second connects the outlet of inlet valve 21 respectively and return valve 20 is exported, and the import of return valve 20 is passed through back
Flow tube 24 is communicated with fluid issuing 4；Upper cover, low head are made from low thermal conductivity material, and cylinder selects high thermal conductivity coefficient
Material makes, and all pipelines, joint select low thermal conductivity material manufactured goods；Bottom is installed in sieve plate 15, cylinder and sieved in cylinder
Plate 15 is fitted with magnetic-particle bed 2；Flow straightener 17 uses the measuring pump of the communication interface of band 485；Cylinder is outer by technical process
Or the Hall sensor of a fluidized state instrument 7 is installed at the expansion height of the magnetic fluid of experiment determination, Hall sensor connects
To a micro controller, the signal that micro controller is inputted to this sensor is transformed to data signal and multiple repairing weld is taken after average by 485
Communication interface send controller 9；Install one and the IC temperature in the good thermometer 6 of the closely connected heat conduction of barrel outer surface in the outer middle part of cylinder
Sensor, temperature sensor is connected to a micro controller, and the signal that micro controller is inputted to this sensor is transformed to data signal and multiple
Sampling takes after average and to send controller 9 by 485 communication interfaces；Three controllable electric powers 8 are identical all with two pairs of power output ends, defeated
Go out variable DC voltage and one pair of which polarity is variable, three controllable electric powers 8 all receive controller 9 by 485 communication interfaces
The voltage and polarity number of output needed for the tunnels of Suo Fa bis-, three groups of magnet coils 5 around it is consistent be enclosed on the cylinder of bed body 1 and with outside cylinder
Surface contact surface heat conduction is good, is determined between three groups of magnet coils and with the distance of cylinder according to technological requirement experiment.One group of electromagnetism
Coil 5 is identical and constituted using Double-wire parallel wound mode coiling by two number of turns, and the top of two coils and terminal are respectively with one
The positive pole and negative pole of a pair of power output ends are connected in individual controllable electric power 8；Controller 9 uses PLC, PLC to pass through 485 communication interfaces
Mutually communicated with fluidized state instrument 7, thermometer 6, three controllable electric powers 8 and measuring pump, tetra- output ports of PLC connect control respectively
Return valve 20 processed, inlet valve 21, bed bottom valve 22, drain tap 23.
The method of operation of the present embodiment sewage disposal is batch-type.Be in advance 27~60 degree Celsius to PLC set temperature values,
Magnet coil 5 maximum current value that the resistance value of the single coil of magnet coil 5 and wire diameter according to coiling are determined is tried to achieve
Maximum voltage value, technical process require flow velocity, the volume number full of bed body 1 and return duct 24, hydraulic detention time, current outflow
Time.PLC controls its operational process to be：Closing volume valve 20, bed bottom valve 22, open drain tap 23, are by particle diameter
0.05~2mm natural magnetic iron ore particle loads bed body 1 from exhaust outlet 18, opens inlet valve 21 and measuring pump, to metering
Pump setting technical process requires flow velocity and the volume number full of bed body 1 and return duct 24, and sewage passes through inlet valve 21 and metering
Pump enters bed body 1 with the stable flow velocity for setting technical process requirement from fluid inlet 3, and metering pump-metered flows into sewage, and oneself can be full of
When bed body 1 and return duct 24, metering pump signal closes inlet valve 21, drain tap 23 to PLC, PLC, opens return valve
20, PLC perform the program worked out with the test method of the magnetic field intensity, and such as program end of run does not obtain and can be used for characterizing
Meet the magnetic field intensity of technical process requirement, you can the magnitude of voltage that control power supply 8 is exported to magnet coil 5 is that zero, PLC reports an error, no
The magnitude of voltage for then keeping controllable electric power 8 to be exported to magnet coil 5, using magnetic field intensity characterization value as magnetic field intensity setting value, and
It is transferred to and performs the magnetic field intensity produced with the magnetically fluidized bed device and temperature while meeting the control method of technical process requirement
The program of establishment, due to the detected value of fluidized state instrument 7 characterize be actual magnetic field strength size opposite number, i.e. detected value is bigger
Actual magnetic field strength is smaller, and the smaller actual magnetic field strength of detected value is bigger, therefore defines setting value in a control program and compare detected value
Greatly positively biased difference, setting value smaller than detected value is negative bias difference, now sewage suitable magnetic field intensity and at a temperature of with compared with
High water velocity and natural magnetic iron ore particle hybrid reaction, and continuously circulation carries out hybrid reaction through return duct 24, until
The hydraulic detention time of setting is reached, PLC control measuring pumps are in opening and no longer current are accelerated, and open bed bottom valve
22nd, drain tap 23, handle water up to standard and are flowed out at bed bottom valve 22, after the current delivery time for reaching setting, and PLC controls are closed
A bottom valve 22 is closed, this completes a water treatment process.In water process running, such as thermometer 6, fluidized state
PLC carries out sound and light alarm and the artificial operation of prompting when the normal value that the detected value of instrument 7 occurs more than setting, until cut-out dress
Put the emergency measures such as power supply.
The present embodiment technical process requires that temperature value is 27~60 degree Celsius, and pending water temperature is room temperature, under normal circumstances
Temperature can not possibly surpass the upper limit, therefore need not install cooling jacket 11 additional.
The present embodiment, using three groups of magnet coils, is the cause inconvenient because processing one group big magnet coil.The present embodiment
To temperature controlled less demanding, therefore three controllable electric powers output is identical magnitude of voltage in operation.Will in temperature control
High occasion is sought, plurality of electromagnetic coil can be used, different controllable electric powers are each connect, each magnet coil region is installed each
From thermometer scheme so that obtaining high temperature field uniformity or different zones has different temperature.
The disclosure side that the present embodiment compares using the Chinese Patent Application No. 201210558731.9 of vertical rotating rotating disk
Case, at least has three aspect energy-saving effects for energy-conservation：First with the advantage of magnetically fluidized bed technology, using higher sewage
Upflow velocity makes particle keep suspended state, while water velocity higher around particle makes remover in liquid and particle surface
Between mass transfer it is good, greatly improve the treatment effeciency of sewage, reduce hydraulic detention time；Secondly employing the magnetic of the present invention
Fluidized bed plant produces the control method that magnetic field makes full use of its heat energy simultaneously, without consuming heating energy source；Thirdly magnetically fluidized bed
Required observable index vertical rotating rotating disk is small；Energy consumption can greatly thus be reduced using the present invention program.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. the magnetic field intensity and temperature of a kind of magnetically fluidized bed device meet the control method of technical process requirement simultaneously, its feature exists
In：
The magnetically fluidized bed device includes fluidized bed body, the one group of magnet coil and magnet coil being located at outside magnetically fluidized bed body
Connected controllable electric power, controller, the fluidized state instrument and thermometer, flow straightener being connected respectively with fluidized bed body；The fluidisation
Bed is provided with a fluid issuing and fluid inlet, and fluid bed top is provided with an exhaust outlet, and flow straightener is located at fluid inlet, fluidizes
Lower section, which is provided with above a sieve plate, the sieve plate, in bed is disposed with a magnetic-particle bed, the controllable electric power, fluidized state instrument,
Thermometer, flow straightener are connected with controller respectively, and the fluid bed is provided with a heat-conducting layer, institute with magnet coil inner ring contact portion
State magnet coil and be externally provided with a heat-insulation layer, the magnet coil quantity is one group, cold provided with one between magnet coil and heat-insulation layer
But interlayer, cooling sandwith layer is exported provided with a cooling medium entrance and cooling medium, and cooling medium porch is provided with a cooling electricity
Control valve, cooling electric control valve be connected with controller, the magnet coil quantity be some groups, every group of coil with it is corresponding can
Power supply connection is controlled, the exhaust outlet is provided with provided with a bottom valve at a drain tap, the fluid inlet, at flow straightener end
Provided with an inlet valve, it is provided between fluid issuing and flow straightener in a return duct, return duct and is provided with a return valve, it is described
Drain tap, bed bottom valve, inlet valve, return valve are respectively connected with controller, and the fluidized state instrument includes state
Sensor and the signal transmitting device being connected with state sensor, the state sensor are Hall sensor, the controllable electric power
If by power input, main line power source regulating circuit, power control circuit, adjustment signal interface, some to power output end group
Into every road its importation of power source regulating circuit is connected with power input and power control circuit respectively, power source regulating circuit
Output par, c is connected with power output end, power control circuit and adjustment signal orifice, and one group of magnet coil is by two
The individual number of turns is identical and using Double-wire parallel wound mode coiling composition, the top of two coils and terminal respectively with a controllable electric power
In a pair of power output ends positive pole and negative pole connection；
The specific steps of control method include as follows：
(1) by controller preset magnetically fluidized bed device configure magnet coil, thermometer, fluidized state instrument, cool down it is automatically controlled
Valve situation, each group magnet coil and each thermometer, each fluidized state instrument, each cooling electric control valve corresponding relation, technical process
It is required that temperature and the value and tolerance value of magnetic field intensity that each magnet coil of magnetically fluidized bed device is produced, during observing and controlling interval
Between, current first group of magnet coil of observing and controlling；
(2) the controller collection and preservation corresponding temperature instrument and correspondence fluidized state instrument detected value；
(3) controller compares the temperature and field strength values and corresponding temperature instrument and corresponding fluidisation of this group of magnet coil setting
State instrument detected value simultaneously tries to achieve deviation, and setting value is than detected value greatly negative bias difference, and setting value smaller than detected value is overgauge
Value；
(4) judgment bias value goes to step (5) in tolerance value, otherwise according to the different situations of gained deviation, the control
Device is proceeded as follows：
Temperature and magnetic field intensity deviation are all negative bias difference, and controller is by controlling controllable electric power connection one group of electromagnetic wire of correspondence
Two coils of circle, it is positive polarity to output end output voltage polarity to make coil two, improves output end and magnetic field intensity deviation
Proportional magnitude of voltage, control correspondence cooling electric control valve is closed, and magnetic field intensity and temperature that magnet coil is produced is increased simultaneously
Greatly；
Temperature and magnetic field intensity deviation are all positively biased difference, and controller is by controlling controllable electric power connection one group of electromagnetic wire of correspondence
Two coils of circle, it is positive polarity to output end output voltage polarity to make coil two, and reduction output end is proportional to deviation
Magnitude of voltage, control correspondence cooling electric control valve is closed, and magnetic field intensity and temperature that magnet coil is produced is reduced simultaneously；
Temperature deviation value is positively biased difference, and magnetic field intensity deviation is negative bias difference, and controller is by controlling controllable electric power to connect
Correspondence one group of magnet coil two coils, make coil two to output end output voltage polarity be positive polarity, improve output end with
The proportional magnitude of voltage of magnetic field intensity deviation, control correspondence cooling electric control valve is opened, and the magnetic field for producing magnet coil is strong
Degree increase, temperature reduces；
Temperature deviation value is negative bias difference, and magnetic field intensity deviation is positively biased difference, and controller is by controlling controllable electric power to connect
Two coils of one group of magnet coil of correspondence, it is a positive polarity, a negative pole to output end output voltage polarity to make coil two
Property, positive polarity output terminal output voltage is more than negative polarity output output voltage, and the difference of two pairs of output end output voltage values is exhausted
Inversely proportional with magnetic field intensity deviation to being worth, control correspondence cooling electric control valve is closed, and the magnetic field for producing magnet coil is strong
Degree reduces, temperature increase；
(5) by the observing and controlling interval time delay of setting；
(6) whether judge current observing and controlling is last group of magnet coil：If so, setting current first group of magnet coil of observing and controlling, turn step
Suddenly (2)；Otherwise, if next group of magnet coil of current observing and controlling, goes to step (2).
2. the magnetic field intensity and temperature of magnetically fluidized bed device according to claim 1 meet the control of technical process requirement simultaneously
Method processed, it is characterised in that：The controller storage temperature instrument described in step (1) and correspondence fluidized state instrument detected value are set
Bound, the controller described in step (3) carries out bound judgement to detected value, if taking acousto-optic report when exceeding bound
The artificial operation of alert, prompting, until shearing device power supply emergency measure.
3. the magnetic field intensity and temperature of magnetically fluidized bed device according to claim 1 meet the control of technical process requirement simultaneously
Method processed, it is characterised in that：Increase preservation different time sections, different technological requirement magnetically fluidized bed devices are each in step (1)
Temperature and the value and tolerance value of magnetic field intensity that individual magnet coil is produced, the controller described in step (3) is according to current
Period obtains the temperature and the value and tolerance value of magnetic field intensity of corresponding each magnet coil generation.
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| CN201132115Y (en) * | 2007-12-14 | 2008-10-15 | 华南理工大学 | Magnetically three phase ebullated bed enzymolysis reactor |
| US8168123B2 (en) * | 2009-02-26 | 2012-05-01 | Siliken Chemicals, S.L. | Fluidized bed reactor for production of high purity silicon |
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