CN105498664A - Control method and test method of magnetically fluidized bed - Google Patents
Control method and test method of magnetically fluidized bed Download PDFInfo
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- CN105498664A CN105498664A CN201510953657.4A CN201510953657A CN105498664A CN 105498664 A CN105498664 A CN 105498664A CN 201510953657 A CN201510953657 A CN 201510953657A CN 105498664 A CN105498664 A CN 105498664A
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- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- 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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- 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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Abstract
The invention discloses a control method and corresponding test method of a magnetically fluidized bed for enabling the magnetic field intensity and temperature to meet the requirement for the technological process at the same time. The control method that a magnetically fluidized bed device is adopted for generating a magnetic field and heat energy is sufficiently utilized at the same time is adopted, energy consumption is lowered, safety is improved, and automatic control is achieved.
Description
The application be to Chinese invention number of patent application 201410670871.4, November 20 2014 applying date day, be called the divisional application of " a kind of magnetically fluidized bed device and use control method and the test method of this device ".
Technical field
The present invention relates to a kind of control method for chemistry, bionic magnetic current gasifying device and test method, particularly relate to a kind of control method and the test method that utilize the magnetic current gasifying device in solenoid generation magnetic field.
Background technology
Reaction in chemistry, bioengineering, mixing or separation are its main process, fluid bed is that one utilizes gas or liquid to make solid particle be in suspended state by granular solids layer, the device of promoting the circulation of qi solid phase of going forward side by side or liquid and solid phase reaction, mixing or separation process.Relative to centrifugal, vibration harmony fluid bed, magnetically fluidized bed (MagneticallyFluidizedBed, MFB) be that common fluid bed is introduced in additional magnetic field, adopt magnetosensitive particle as the solid liquid phase treatment system of bed medium, it is the product that fluidization technology combines with electromagnetic technique, there is vibration little, the advantage that noise is little, particularly as the special shape of magnetically fluidized bed---magnetic stablizing bed, it is in axis, the magnetic field that time-independent space uniform is produced by solenoid or permanent magnet usually, the stable bed only having faint motion formed under this magnetic field, bed shows as fixed bed form, when there being fluid to flow through, bed expands as piston, bed loosens, stable, bubble-free, the fluid bed of this expansion is exactly magnetic stablizing bed.The magnetic stablizing bed many advantages having fixed bed and fluid bed concurrently.Magnetic stablizing bedly overcome that fluid bed makes because its back-mixing is serious that conversion ratio is on the low side preferably, particle easily by the shortcoming of taking out of, and the handling of particle are very convenient; The effect of externally-applied magnetic field can control alternate back-mixing effectively, and uniform voidage makes again bed inside not easily occur channel; The magnetic stablizing bed fixed bed that compensate for uses the shortcoming that pressure drop is excessive, hot localised points easily appears in exothermic reaction caused during small-particle; Simultaneously magnetic stablizing bed can stable operation in relative broad range, fully bubble crushing can also improve interphase mass transfer.
As everyone knows, solenoid not only can produce magnetic field, also produces heat simultaneously, and utilizes the magnetically fluidized bed device of its heat energy produced to have its operation and test method to yet there are no research at home and abroad simultaneously.
Summary 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 a kind of magnetically fluidized bed device making existing solenoid produce the heat energy utilizing it to produce while magnetic field.
The second object of the present invention be to provide a kind of described magnetically fluidized bed device is produced magnetic field and heat energy meet simultaneously technical process require control method.
The third object of the present invention be to provide a kind of obtain described magnetically fluidized bed device characterization and produce meet technical process and require the test method of magnetic field intensity.
Technical scheme: for solving the problems of the technologies described above, the invention provides a kind of magnetically fluidized bed device, comprise fluidized bed body, be located at one group or some groups of solenoids, the controllable electric power be connected with solenoid, controller, the fluidized state instrument be connected with fluidized bed body respectively and thermometer, flow straighteners of magnetically fluidized bed external body; Described fluid bed is provided with fluid outlet and fluid inlet, fluid bed top is provided with an exhaust outlet, flow straightener is located at fluid inlet place, in fluid bed, below is provided with a sieve plate, a magnetic-particle bed material is furnished with above described sieve plate, described controllable electric power, fluidized state instrument, thermometer difference, flow straightener are connected with controller, and described fluid bed and solenoid inner ring contact portion are provided with a heat-conducting layer.
Further, the heat losses produced to prevent solenoid, is provided with a heat-insulation layer outside described solenoid, the dark film wrapped in outside of heat-insulation layer;
Further, the invention provides a kind of optimization magnetically fluidized bed device, described solenoid quantity is one group, a cooling sandwith layer is provided with between solenoid and heat-insulation layer, cooling sandwith layer is provided with a cooling medium entrance and cooling medium outlet, cooling medium porch is provided with a cooling electric control valve, and cooling electric control valve is connected with controller.
Further, the invention provides another kind of optimization magnetically fluidized bed device, described solenoid quantity is some groups, often organize coil all to connect with corresponding controllable electric power, described exhaust outlet is provided with a drain tap, and described fluid inlet place is provided with a bottom valve, an inlet valve is provided with at flow straightener end, between fluid issuing and flow straightener, be provided with a return duct, be provided with a return valve in return duct, described drain tap, bed bottom valve, inlet valve, return valve are connected with controller respectively.
Further, described fluidized state instrument is by one or several state sensors, signal transmitting device forms, signal transmitting device and one or several state sensors, controller is communicated with, state sensor can be pressure sensor, differential pressure pick-up, flowmeter, search coil, capacitance probe, Hall element, Hall element is generally used for measuring magnetic induction intensity, and magnetic induction intensity changes with magnetic conductivity, when Hall element is installed in the expansion height place of the magnetic fluid that technical process or experiment are determined outside fluidized bed body, because whether this place is magnetic fluid, then the magnetic conductivity at this place is different, therefore the expansion height of magnetic fluid can be detected, state sensor preferably adopts Hall element.
Further, described thermometer is made up of temperature sensor, signal transmitting device, and signal transmitting device is communicated with temperature sensor, controller, the preferred IC temperature sensor of temperature sensor when temperature is less than 150 degree Celsius.
Further, described one group of solenoid, often organize solenoid and be made up of two coils, the number of turns preferred version of two coils is identical, and winding method preferably adopts the coiling of Double-wire parallel wound mode, adopts this mode coiling that two coils can be made to form identical magnetic field.
Magnetically fluidized bed device provided by the invention, wherein: described controllable electric power is by power input, some roads power source regulating circuit, power control circuit, adjustment signal interface is some to be formed power output end, its importation of power source regulating circuit, every road is communicated with power input, its two wires exported wherein is communicated with for a pair with power output end, it is communicated with power control circuit, power control circuit and every road power source regulating circuit and adjustment signal orifice, power input connects civil power, some roads power source regulating circuit is at least two-way and the output voltage polarity of the power source regulating circuit of half is convertible, some power output end to be communicated with each coil in described a group or some groups of solenoids, connect and can be pair of output and be communicated with a coil separately and also can be pair of output and be communicated with several coil, when the top of the equidirectional coiling of each coil and terminal are positive polarity with power output end output voltage polarity respectively, the positive pole of corresponding power output end and negative pole are communicated with, described controllable electric power is communicated with described controller by adjustment signal interface, described controller Suo Famei road output voltage and polar signal are sent power control circuit by adjustment signal interface, power control circuit Zai Duimei road power source regulating circuit regulates and controls, the power source regulating circuit corresponding power output end be communicated with in Shi Mei road exports voltage and the polarity of the required output in described controller Suo Fagai road, adjustment signal interface preferably adopts 485 communication interfaces,
Magnetically fluidized bed device of the present invention, wherein: described optional a set of or some cover cooling jacket, cooling medium outlet or entrance are offered in cooling jacket bottom, cooling jacket top also to export with bottom cooling medium or entrance becomes 180 degree of angles place to offer cooling medium to export or entrance, porch is connected to a cooling electric control valve, cooling electric control valve be communicated with controller, cooling jacket inner ring and its contact surface heat conduction good, cooling jacket is preferably installed in solenoid outer ring, and cooling medium is preferably water.
The magnetic field intensity of above-mentioned magnetically fluidized bed device and temperature meet the control method that technical process requires simultaneously, and its concrete steps comprise as follows:
(1) described controller presets magnetically fluidized bed device configuration solenoid, thermometer, fluidized state instrument, cooling electric control valve situation, each group of solenoid and each thermometer, each fluidized state instrument, respectively cool electric control valve corresponding relation, technical process requires value and the tolerance value of the temperature that each solenoid of magnetically fluidized bed device produces and magnetic field intensity, observing and controlling interval time, current observing and controlling first group of solenoid;
(2) described controller collection and preserve corresponding temperature instrument and corresponding fluidized state instrument detected value;
(3) described controller compares temperature of this group solenoid setting and field strength values tries to achieve deviate to corresponding temperature instrument and corresponding fluidized state instrument detected value, setting value (optimum value of setting value needed for production reality) is than detected value greatly negative bias difference, and setting value is less than detected value is positively biased difference;
(4) sentences deviate in tolerance value, go to step (5), otherwise according to the different situation of gained deviate, described controller proceeds as follows:
Temperature and magnetic field intensity deviate are all negative bias difference, two coils, two pairs of output output voltage polarity that controller controls the corresponding one group of solenoid of controllable electric power connection are positive polarity, improve output and the proportional magnitude of voltage of magnetic field intensity deviate, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced and temperature increase simultaneously;
Temperature and magnetic field intensity deviate are all positively biased difference, two coils, two pairs of output output voltage polarity that controller controls the corresponding one group of solenoid of controllable electric power connection are positive polarity, reduce output and the proportional magnitude of voltage of deviate, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced and temperature reduce simultaneously;
Temperature deviation value is positively biased difference, magnetic field intensity deviate is negative bias difference, two coils, two pairs of output output voltage polarity that controller controls the corresponding one group of solenoid of controllable electric power connection are positive polarity, improve output and the proportional magnitude of voltage of magnetic field intensity deviate, control the automatically controlled valve opening of corresponding cooling, the magnetic field intensity that solenoid is produced increases, and temperature reduces;
Temperature deviation value is negative bias difference, magnetic field intensity deviate is positively biased difference, two coils, two pairs of output output voltage polarity that controller controls the corresponding one group of solenoid of controllable electric power connection are a positive polarity, a negative polarity, positive polarity output terminal output voltage is greater than negative polarity output output voltage, absolute difference and the magnetic field intensity deviate of two pairs of output output voltage values are inversely proportional, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced reduces, and temperature increases;
(5) by observing and controlling time delay interval time of setting;
(6) differentiate whether current observing and controlling is last group solenoid: be, if current observing and controlling first group of solenoid, go to step (2); Otherwise, if next group solenoid of current observing and controlling, go to step (2).
Further, described controller storage temperature instrument and corresponding fluidized state instrument detected value all set bound in step (1), described controller carries out taking sound and light alarm, prompting manual operation when bound judgement exceedes, until shearing device power supply emergency measure to detected value in step (3).
Further, increase the value and tolerance value of preserving temperature that different each solenoid of technological requirement magnetically fluidized bed device of different time sections produces and magnetic field intensity in step (1), in step (3) described controller obtain according to current slot corresponding to the temperature that produces of each solenoid and the value of magnetic field intensity and tolerance value.
Further, in step (3) described controller according to current and preserve before several times detected value try to achieve deviate, controller can try to achieve the rate of change of deviate rate of change and deviate rate of change from continuous print several times detected value, thus the variation tendency of control object can be judged, improve Control platform.
After magnetically fluidized bed device is made and is required that parameter determines with technical process, for magnetically fluidized bed device provides the magnetic field intensity producing and meet technical process and require, be a difficult problem, particularly observing under a body inner case, the invention provides a kind of test method for this reason.Magnetic stablizing bed bed experiences magnetic from high to low with the magnetic field intensity applied and gathers shape, chain, shot shape three kinds of expansion shapes, expansion height from low to high, operate under chain type state, particle lines up chain, void ratio between chain and chain is more even, not easily form channel, liquid-solid contact is good, simultaneously magnetic stablizing bed when operating under chain type state, the fragmentation of bed to bubble is obvious, bubble is fractured into many minute bubbles through bed, liquid phase interphase is long-pending to be improved greatly, be conducive to gas-liquid mass transfer, usual selection chain type state is as mode of operation, the expansion height place of magnetic fluid when described fluidized state instrument Hall element is installed in fluidized bed body outer chain type state, adopt following method to characterize and generation meet technical process require magnetic field intensity.
Obtain magnetically fluidized bed device characterization and produce and meet the test method that technical process requires magnetic field intensity, its concrete steps comprise as follows:
(1) described controller controls controllable electric power and exports maximum voltage value to solenoid, gather and preserve fluidized state instrument Hall element detected value and demarcate the value that this value is the nonmagnetic fluid of Hall element installing place, setting technical process requires the flow velocity flowing into fluidized bed body fluid, by this fluid incoming fluid import;
(2) described controller controls controllable electric power and exports the voltage progressively reduced to solenoid, the magnitude of voltage of each reduction is that controllable electric power exports 1/10th of maximum voltage value to solenoid, after each reduction voltage, carry out time delay, preferred delay time is 5 seconds;
(3) gather and preserve fluidized state instrument Hall element detected value, ask this detected value and last time detected value difference, until difference is greater than zero; Now described controller control controllable electric power reduces voltage again, the magnitude of voltage reduced is identical with last time, time delay 5 seconds, gather fluidized state instrument Hall element detected value, try to achieve the nonmagnetic fluid detection value of this detected value and demarcation and again divided by 2, its quotient just can be used for characterizing the magnetic field intensity meeting technical process and require, calls magnetic field intensity characterization value in the following text;
(4) described controller controls controllable electric power and exports the voltage progressively raised to solenoid, the magnitude of voltage of each rising is controllable electric power adjustable minimum step amount magnitude of voltage, after each boosted voltage, carry out time delay, preferred delay time is 5 seconds, gather fluidized state instrument Hall element detected value, until detected value is less than magnetic field intensity characterization value, now described controller controls controllable electric power and exports the magnitude of voltage exported its last time to solenoid, and this magnitude of voltage just can make solenoid produce the magnetic field intensity of technical process requirement.
Described magnetically fluidized bed device characterization and generation meet the test method that technical process requires magnetic field intensity, in the step of controllable electric power to solenoid output voltage values, also can adopt the method progressively improving magnitude of voltage.
Beneficial effect: the higher sewage upflow velocity of magnetically fluidized bed device provided by the invention makes particle keep suspended state, around particle, higher water velocity makes removal thing mass transfer between liquid and particle surface good simultaneously, adhere to bacterial biof iotalm on its inner surface more stable, be not subject to the impact of hydraulics and come off, more do not exist and stir damage biological film problem, the treatment effeciency of sewage is improved greatly; Considerably reduce device volume.Produce because the present embodiment have employed magnetically fluidized bed device the control method that magnetic field makes full use of its heat energy simultaneously, decrease energy consumption, improve security and achieve automatic control.
The magnetic field intensity based on magnetically fluidized bed device that theres is provided of the present invention and temperature meet the control method that technical process requires simultaneously, what can comparatively prepare provides magnetically fluidized bed plant running technological parameter, and present invention also offers cannot observe to provide under a body inner case a kind of obtain magnetically fluidized bed device characterization and produce meet the test method that technical process requires magnetic field intensity.
Accompanying drawing explanation
Fig. 1 is cross-section structure and the System's composition schematic diagram of apparatus of the present invention embodiment one.
Fig. 2 is cross-section structure and the System's composition schematic diagram of apparatus of the present invention embodiment two.
Fig. 3 is apparatus of the present invention controllable power supply circuit schematic diagram.
Fig. 4 is the control method schematic procedure block diagram that magnetic field intensity of the present invention and temperature meet technical process requirement simultaneously.
Fig. 5 is the test method schematic procedure block diagram that sign of the present invention and generation meet that technical process requires magnetic field intensity.
In figure: 1-fluidized bed body; 2-bed material; 3-fluid inlet; 4-fluid issuing; 5-solenoid; 6-thermometer; 7-fluidized state instrument; 8-controllable electric power; 9-controller; 10-heat-insulation layer; 11-cooling jacket; 12-cooling medium inlet; 13-cooling medium exports; 14-cools electric control valve; 15-sieve plate; 17-flow straightener; 18-exhaust outlet; 20-return valve; 21-inlet valve; 22-bed bottom valve; 23-drain tap; 24-return duct.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment one:
As Fig. 1, the present embodiment is anaerobism magnetically fluidized bed sulphur autotroph reaction unit, for removing nitrate in water and phosphorus simultaneously.Device comprises: bed body 1, bed material 2, fluid inlet 3, fluid issuing 4, one group of solenoid 5, thermometer 6, fluidized state instrument 7, controllable electric power 8, controller 9, heat-insulation layer 10, cooling jacket 11, cooling medium outlet 12, cooling medium outlet 13, cooling electric control valve 14, sieve plate 15, flow straightener 17, an exhaust outlet 18.
Bed body 1 is made up of upper cover, cylindrical shell, low head; Low head bottom installing fluid inlet 3, upper cover installing fluid issuing 4 and exhaust outlet 18, fluid issuing 4 is built with screen pack, and upper cover, low head transparent organic glass make, and cylindrical shell aluminium makes; Installing sieve plate 15 in bottom in cylindrical shell, in cylindrical shell, sieve plate 15 is equipped with magnetic-particle bed material 2 above; Flow straightener 17 adopts the measuring pump of band 485 communication interface; The expansion height of the outer magnetic fluid determined by technical process or experiment of cylindrical shell installs the Hall element of a fluidized state instrument 7, Hall element is connected to a micro controller, and micro controller is transformed to data signal to the signal that this sensor inputs and multiple repairing weld send controller 9 by 485 communication interfaces after getting average; Cylindrical shell outer middle part installing one and the IC temperature sensor in the good thermometer 6 of the closely connected heat conduction of barrel outer surface, IC temperature sensor is adopted to be conducive to improving its electromagnetism interference performance, temperature sensor is connected to a micro controller, and micro controller is transformed to data signal to the signal that this sensor inputs and multiple repairing weld send controller 9 by 485 communication interfaces after getting average; Controlable electric current is as shown in Figure 3 had in controllable electric power 8; Controllable electric power 8 has two pairs of power output ends, exports variable DC voltage and wherein a pair polarity is variable, and controllable electric power 8 accepts the voltage that exports needed for controller 9 Suo Fa bis-tunnel and polarity number by 485 communication interfaces; One group of solenoid 5 to be enclosed within a body 1 cylindrical shell and good with the heat conduction of barrel outer surface contact surface, solenoid 5 is identical and adopt Double-wire parallel wound mode coiling to form by two number of turns, and the top of two coils and terminal are communicated with the positive pole of a pair power output end in controllable electric power 8 and negative pole respectively; Cooling electric control valve 14 the present embodiment adopts magnetic valve, and can use the valve of regulating flow quantity in control overflow high occasion, a micro controller is controlled it by noncontacting switch, and micro controller connects 485 communication interfaces and accepts the control signal that cooling electric control valve 14 issued by controller 9; Controller 9 adopts industrial control computer, industrial control computer passes through 485 communication interfaces and fluidized state instrument 7, thermometer 6, controllable electric power 8, cools electric control valve 14 and the mutual communication of measuring pump, industrial control computer has been installed control program in advance and has been controlled desired data, artificial parameter is housed interface, test interface, controlling run interface, improper emergent interface is set, then according to magnetic field intensity as described in Figure 4 and temperature meet simultaneously technical process require control method operate.
The bed material 2 that the present embodiment adopts is natural magnetic iron ore particle, the denitrogenation of sulphur autotrophic denitrification bacterial respiratory nitrate anion can be made, in addition this bacterioid with natural magnetic iron ore for the energy, the metabolite of natural magnetic iron ore is used for dephosphorization, realize naturally being coupled of biological denitrificaion and chemical denitrogenation, bed material 2 and autotrophic denitrification bacterium in fluidized state, fully mix under the magnetic fields of solenoid 5.Water after process flows out from fluid issuing 4 through being equipped with screen pack.The nitrogen produced in denitrification process is discharged by exhaust outlet 18 and is passed into a liquid seal device.
Be the natural magnetic iron ore particle of 0.1-2mm and the anaerobic sludge mixing through orientation domestication by particle diameter, loading bed body 1 from exhaust outlet 18, through soaking after a while, finding that natural magnetic iron ore particle surface has biological attachment produce raw, can think and can enter biofilm success steady load and run.Now industrial control computer enter artificial parameter arrange interface input the present embodiment technical process require temperature value be 30 ~ 35 degree Celsius, the maximum voltage value that solenoid 5 maximum current value that the resistance value of input solenoid 5 single coil and the wire diameter of foundation coiling are determined is tried to achieve, input the pending water flow velocity determined according to factorial experiments such as pending water pollutions situation, clearance and fluid bed situations, set this flow velocity to measuring pump, pending water flows into bed body 1 with stable flow velocity from fluid inlet 3 by measuring pump, industrial control computer enters test interface and performs with the program of the test method of magnetic field intensity as shown in Figure 5 establishment, as program end of run, do not obtain the magnetic field intensity that can be used for characterizing and meet technical process and require, namely controllable electric power 8 is zero to the magnitude of voltage that solenoid 5 exports, industrial control computer reports an error, otherwise keep the magnitude of voltage that controllable electric power 8 exports to solenoid 5, using magnetic field intensity characterization value as magnetic field intensity setting value, and proceed to the program that controlling run interface performs the control method establishment simultaneously meeting technical process requirement with the magnetic field intensity of described magnetically fluidized bed device generation and temperature, now this Shi Shi Installed puts and can obtain magnetic field intensity needed for water treatment process and temperature under industrial control computer controls, carry out steady load operation, process water up to standard to flow out from fluid issuing 4.What characterize due to fluidized state instrument 7 detected value is the opposite number of actual magnetic field strength size, namely the larger actual magnetic field strength of detected value is less, the less actual magnetic field strength of detected value is larger, therefore defining setting value in a control program than detected value greatly positively biased difference, setting value is less than detected value is negative bias difference.In steady load runs, as thermometer 6, fluidized state instrument 7 detected value there is the situations such as the normal value exceeding setting time, industrial control computer automatically enters improper emergent interface and carries out sound and light alarm and prompting manual operation, until emergency measures such as shearing device power supplys.
The present embodiment technical process requires that temperature value is 10 ~ 45 degree Celsius, and pending water temperature angle value is about 15 degree Celsius, and technical process requires that temperature value and pending water temperature angle value and usual room temperature are more or less the same, and institute's calorific requirement is little; Cooling jacket 11 is arranged on solenoid 5 outer ring, and solenoid 5 diameter can be made like this to diminish, and magnetic circuit also diminishes, and magnetic field intensity increases, resistance decreasing, and the heat of generation also diminishes, and makes solenoid 5 not produce too much heat when meeting magnetic field intensity; The few heat produced to make solenoid 5 can be fully used, and cooling jacket outer surface is equipped with heat-insulation layer 10; May pass into pending water at cooling jacket 11 in summer to lower the temperature as cooling medium, such cooling consumes the energy hardly.
The present embodiment makes full use of the advantage of magnetically fluidized bed technology, higher sewage upflow velocity is adopted to make particle keep suspended state, around particle, higher water velocity makes removal thing mass transfer between liquid and particle surface good simultaneously, adhere to bacterial biof iotalm on its inner surface more stable, be not subject to the impact of hydraulics and come off, more do not exist and stir damage biological film problem, the treatment effeciency of sewage is improved greatly; Considerably reduce device volume.Produce because the present embodiment have employed magnetically fluidized bed device the control method that magnetic field makes full use of its heat energy simultaneously, decrease energy consumption, improve security and achieve automatic control.
Embodiment two:
As Fig. 2, the present embodiment for utilizing magnetically fluidized bed as chemical mixing reaction unit, for the treatment of nitrobenzene sewage.Device comprises: bed body 1, bed material 2, fluid inlet 3, fluid issuing 4, three groups of solenoids 5, thermometer 6, fluidized 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 ducts 24.
Bed body 1 is made up of upper cover, cylindrical shell, low head; Upper cover installing fluid issuing 4 and exhaust outlet 18, exhaust outlet 18 is connected to drain tap 23 import, low head bottom installing fluid inlet 3, fluid inlet 3 is connected to threeway first, two other joint of threeway first connects the outlet of a bottom valve 22 import and flow straightener 17 respectively, the import of flow straightener 17 is connected to another threeway second, and two other joint of threeway second connects inlet valve 21 outlet respectively and return valve 20 exports, and return valve 20 import communicates with fluid issuing 4 through return duct 24; Upper cover, low head select low thermal conductivity material to make, and cylindrical shell selects high heat conductive material to make, and low thermal conductivity material manufactured goods selected by all pipelines, joint; Installing sieve plate 15 in bottom in cylindrical shell, in cylindrical shell, sieve plate 15 is equipped with magnetic-particle bed material 2 above; Flow straightener 17 adopts the measuring pump of band 485 communication interface; The expansion height of the outer magnetic fluid determined by technical process or experiment of cylindrical shell installs the Hall element of a fluidized state instrument 7, Hall element is connected to a micro controller, and micro controller is transformed to data signal to the signal that this sensor inputs and multiple repairing weld send controller 9 by 485 communication interfaces after getting average; Cylindrical shell outer middle part installing one and the IC temperature sensor in the good thermometer 6 of the closely connected heat conduction of barrel outer surface, temperature sensor is connected to a micro controller, and micro controller is transformed to data signal to the signal that this sensor inputs and multiple repairing weld send controller 9 by 485 communication interfaces after getting average; Three controllable electric powers 8 are identical all has two pairs of power output ends, export variable DC voltage and wherein a pair polarity is variable, three controllable electric powers 8 all accept the voltage that exports needed for controller 9 Suo Fa bis-tunnel and polarity number by 485 communication interfaces, three groups of solenoids 5 to be enclosed within a body 1 cylindrical shell and good with the heat conduction of barrel outer surface contact surface around consistent, to test determine between three groups of solenoids and with the distance of cylindrical shell according to technological requirement.One group of solenoid 5 is identical and adopt Double-wire parallel wound mode coiling to form by two number of turns, and the top of two coils and terminal are communicated with the positive pole of a pair power output end in a controllable electric power 8 and negative pole respectively; Controller 9 adopts PLC, PLC passes through 485 communication interfaces and fluidized state instrument 7, thermometer 6, three controllable electric powers 8 and the mutual communication of measuring pump, PLC tetra-output ports connection control return valve 20, inlet valve 21, bed bottom valve 22, drain taps 23 respectively.
The method of operation of the present embodiment sewage disposal is batch-type.In advance to PLC set temperature value be 27 ~ 60 degree Celsius, the resistance value of solenoid 5 single coil and the maximum voltage value of trying to achieve according to solenoid 5 maximum current value that the wire diameter of coiling is determined, technical process require flow velocity, the volume number being full of a body 1 and return duct 24, hydraulic detention time, current delivery time.PLC controls its operational process: closing volume valve 20, bed bottom valve 22, open drain tap 23, be that the natural magnetic iron ore particle of 0.05 ~ 2mm loads bed body 1 from exhaust outlet 18 by particle diameter, open inlet valve 21 and measuring pump, measuring pump setting technical process is required to flow velocity and is full of the volume number of a body 1 and return duct 24, sewage enters bed body 1 with the stable flow velocity setting technical process requirement from fluid inlet 3 by inlet valve 21 and measuring pump, measuring pump metering flow into sewage oneself when can be full of a body 1 and return duct 24, metering pump signal is to PLC, PLC closes inlet valve 21, drain tap 23, open return valve 20, PLC performs with the program of the test method of described magnetic field intensity establishment, as program end of run, do not obtain the magnetic field intensity that can be used for characterizing and meet technical process and require, namely controllable electric power 8 is zero to the magnitude of voltage that solenoid 5 exports, PLC reports an error, otherwise keep the magnitude of voltage that controllable electric power 8 exports to solenoid 5, using magnetic field intensity characterization value as magnetic field intensity setting value, and proceed to the program performing and meet the control method establishment that technical process requires with the magnetic field intensity of described magnetically fluidized bed device generation and temperature simultaneously, what characterize due to fluidized state instrument 7 detected value is the opposite number of actual magnetic field strength size, namely the larger actual magnetic field strength of detected value is less, the less actual magnetic field strength of detected value is larger, therefore define setting value in a control program than detected value greatly positively biased difference, setting value is less than detected value is negative bias difference, now sewage under suitable magnetic field intensity and temperature with higher water velocity and natural magnetic iron ore particle hybrid reaction, and carry out hybrid reaction through return duct 24 continuous circulation, until arrive the hydraulic detention time of setting, PLC control measuring pump is in opening and no longer accelerates current, open bed bottom valve 22, drain tap 23, process water up to standard to flow out from bed bottom valve 22, after arriving the current delivery time of setting, PLC controls to close bed bottom valve 22, this completes a water treatment process.In water treatment running, when there is exceeding the situations such as the normal value of setting as thermometer 6, fluidized state instrument 7 detected value, PLC carries out sound and light alarm and prompting manual operation, until emergency measures such as shearing device power supplys.
The present embodiment technical process requires that temperature value is 27 ~ 60 degree Celsius, and pending water temperature is room temperature, and temperature can not surpass the upper limit under normal circumstances, therefore without the need to installing cooling jacket 11 additional.
The present embodiment adopts three groups of solenoids, is the cause because processing one group of large solenoid inconvenience.The present embodiment is to temperature controlled less demanding, therefore three controllable electric powers of being in operation export is identical magnitude of voltage.In the occasion that temperature control requirement is high, can plurality of electromagnetic coil be adopted, connect different controllable electric powers separately, each solenoid region be installed to the scheme of respective thermometer, thus obtain high temperature field uniformity or zones of different has different temperature.
The present embodiment is compared the open scheme of the Chinese Patent Application No. 201210558731.9 adopting vertical rotating rotating disk, with regard to energy-conservation, at least there are three aspect energy-saving effects: the advantage first utilizing magnetically fluidized bed technology, higher sewage upflow velocity is adopted to make particle keep suspended state, around particle, higher water velocity makes removal thing mass transfer between liquid and particle surface good simultaneously, the treatment effeciency of sewage is improved greatly, decreases hydraulic detention time; It two have employed magnetically fluidized bed device of the present invention and produces magnetic field and make full use of the control method of its heat energy, without the need to consuming heating energy source simultaneously; Needed for its three magnetically fluidized bed, observable index vertical rotating rotating disk is little; Thus the present invention program is adopted greatly can to reduce energy consumption.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the magnetic field intensity of magnetically fluidized bed device and temperature meet the control method that technical process requires simultaneously, it is characterized in that: its concrete steps comprise as follows:
(1) magnetically fluidized bed device configuration solenoid, thermometer, fluidized state instrument, cooling electric control valve situation is preset by controller, each group of solenoid and each thermometer, each fluidized state instrument, respectively cool electric control valve corresponding relation, technical process requires value and the tolerance value of the temperature that each solenoid of magnetically fluidized bed device produces and magnetic field intensity, observing and controlling interval time, current observing and controlling first group of solenoid;
(2) described controller collection and preserve corresponding temperature instrument and corresponding fluidized state instrument detected value;
(3) described controller compares temperature of this group solenoid setting and field strength values tries to achieve deviate to corresponding temperature instrument and corresponding fluidized state instrument detected value, and setting value is than detected value greatly negative bias difference, setting value is less than detected value is positively biased difference;
(4) judgment bias value is in tolerance value, goes to step (5), otherwise according to the different situation of gained deviate, described controller proceeds as follows:
Temperature and magnetic field intensity deviate are all negative bias difference, controller is communicated with two coils of corresponding one group of solenoid by controlling controllable electric power, coil two pairs of output output voltage polarity are made to be positive polarity, improve output and the proportional magnitude of voltage of magnetic field intensity deviate, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced and temperature increase simultaneously;
Temperature and magnetic field intensity deviate are all positively biased difference, controller is communicated with two coils of corresponding one group of solenoid by controlling controllable electric power, coil two pairs of output output voltage polarity are made to be positive polarity, reduce output and the proportional magnitude of voltage of deviate, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced and temperature reduce simultaneously;
Temperature deviation value is positively biased difference, magnetic field intensity deviate is negative bias difference, controller is communicated with two coils of corresponding one group of solenoid by controlling controllable electric power, coil two pairs of output output voltage polarity are made to be positive polarity, improve output and the proportional magnitude of voltage of magnetic field intensity deviate, control the automatically controlled valve opening of corresponding cooling, the magnetic field intensity that solenoid is produced increases, and temperature reduces;
Temperature deviation value is negative bias difference, magnetic field intensity deviate is positively biased difference, controller is communicated with two coils of corresponding one group of solenoid by controlling controllable electric power, coil two pairs of output output voltage polarity are made to be a positive polarity, a negative polarity, positive polarity output terminal output voltage is greater than negative polarity output output voltage, absolute difference and the magnetic field intensity deviate of two pairs of output output voltage values are inversely proportional, control the automatically controlled valve closing of corresponding cooling, the magnetic field intensity that solenoid is produced reduces, and temperature increases;
(5) by observing and controlling time delay interval time of setting;
(6) judge whether current observing and controlling is last group solenoid: if so, establish current observing and controlling first group of solenoid, go to step (2); Otherwise, if next group solenoid of current observing and controlling, go to step (2).
2. the magnetic field intensity of magnetically fluidized bed device according to claim 8 and temperature meet the control method that technical process requires simultaneously, it is characterized in that: described controller storage temperature instrument and corresponding fluidized state instrument detected value all set bound in step (1), described controller carries out bound judgement to detected value in step (3), if take sound and light alarm, prompting manual operation when exceeding bound, until shearing device power supply emergency measure.
3. the magnetic field intensity of magnetically fluidized bed device according to claim 1 and temperature meet the control method that technical process requires simultaneously, it is characterized in that: increase in step (1) and preserve different time sections, the temperature of different each solenoids of technological requirement magnetically fluidized bed device generation and the value of magnetic field intensity and tolerance value, the value of the temperature that each solenoid in step (3) corresponding to the acquisition of described controller foundation current slot produces and magnetic field intensity and tolerance value.
4. the magnetic field intensity of magnetically fluidized bed device according to claim 1 and temperature meet the control method that technical process requires simultaneously, it is characterized in that: described magnetically fluidized bed device comprises fluidized bed body, is located at one group of solenoid of magnetically fluidized bed external body, the controllable electric power be connected with solenoid, controller, the fluidized state instrument be connected with fluidized bed body respectively and thermometer, flow straightener, described fluid bed is provided with fluid outlet and fluid inlet, fluid bed top is provided with an exhaust outlet, flow straightener is located at fluid inlet place, in fluid bed, below is provided with a sieve plate, a magnetic-particle bed material is furnished with above described sieve plate, described controllable electric power, fluidized state instrument, thermometer, flow straightener is connected with controller respectively, described fluid bed and solenoid inner ring contact portion are provided with a heat-conducting layer, a heat-insulation layer is provided with outside described solenoid, described solenoid quantity is one group, a cooling sandwith layer is provided with between solenoid and heat-insulation layer, cooling sandwith layer is provided with a cooling medium entrance and cooling medium outlet, cooling medium porch is provided with a cooling electric control valve, cooling electric control valve is connected with controller, described solenoid quantity is some groups, often organize coil all to connect with corresponding controllable electric power, described exhaust outlet is provided with a drain tap, described fluid inlet place is provided with a bottom valve, an inlet valve is provided with at flow straightener end, a return duct is provided with between fluid issuing and flow straightener, a return valve is provided with in return duct, described drain tap, bed bottom valve, inlet valve, return valve is connected with controller respectively, the signal transmitting device that described fluidized state instrument comprises state sensor and is connected with state sensor, described state sensor is Hall element, described controllable electric power is by power input, some roads power source regulating circuit, power control circuit, adjustment signal interface, some power output end to be formed, its importation of power source regulating circuit, every road is communicated with power control circuit with power input respectively, power source regulating circuit output is communicated with power output end, power control circuit and adjustment signal orifice, described one group of solenoid is identical and adopt Double-wire parallel wound mode coiling to form by two number of turns, the top of two coils and terminal are communicated with the positive pole of a pair power output end in a controllable electric power and negative pole respectively.
5. the magnetically fluidized bed device characterization according to any one of claim 1 ~ 4 and generation meet the test method that technical process requires magnetic field intensity, it is characterized in that: its concrete steps comprise as follows:
(1) described controller controls controllable electric power and exports maximum voltage value to solenoid, gathering preservation fluidized state instrument Hall element detected value and demarcating this value is the nonmagnetic fluid detection value of Hall element installing place, setting technical process requires the flow velocity flowing into fluidized bed body fluid, by this fluid incoming fluid import;
(2) described controller controls controllable electric power and exports the voltage progressively reduced to solenoid, and each magnitude of voltage reduced is that controllable electric power exports 1/10th of maximum voltage value to solenoid, after reducing voltage, carries out time delay at every turn;
(3) gather and preserve fluidized state instrument Hall element detected value, ask this detected value and last time detected value difference, until difference is greater than zero; Now described controller control controllable electric power reduces voltage again, the magnitude of voltage reduced is identical with last time, time delay 5 seconds, gather fluidized state instrument Hall element detected value, try to achieve the nonmagnetic fluid detection value of this detected value and demarcation and again divided by 2, its quotient just can be used for characterizing the magnetic field intensity meeting technical process and require, calls magnetic field intensity characterization value in the following text;
(4) described controller controls controllable electric power and exports the voltage progressively raised to solenoid, the magnitude of voltage of each rising is controllable electric power adjustable minimum step amount magnitude of voltage, after each boosted voltage, carry out time delay, gather fluidized state instrument Hall element detected value, until detected value is less than magnetic field intensity characterization value, now described controller controls controllable electric power and exports the magnitude of voltage exported its last time to solenoid, and this magnitude of voltage just can make solenoid produce the magnetic field intensity of technical process requirement.
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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 |
| US20110165028A1 (en) * | 2005-10-28 | 2011-07-07 | Japan Super Quartz Corporation | Method for purification of silica particles, purifier, and purified silica particles |
| CN102239115A (en) * | 2009-02-26 | 2011-11-09 | 西力肯化工有限公司 | Fluidized bed reactor for production of high purity silicon |
| CN102773051A (en) * | 2012-07-20 | 2012-11-14 | 中国科学院过程工程研究所 | Process and device of fluidized bed for synthesis gas methanation |
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| US20110165028A1 (en) * | 2005-10-28 | 2011-07-07 | Japan Super Quartz Corporation | Method for purification of silica particles, purifier, and purified silica particles |
| CN201132115Y (en) * | 2007-12-14 | 2008-10-15 | 华南理工大学 | Magnetically three phase ebullated bed enzymolysis reactor |
| CN102239115A (en) * | 2009-02-26 | 2011-11-09 | 西力肯化工有限公司 | Fluidized bed reactor for production of high purity silicon |
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