CN104492599B - Treatment method of graphite dust - Google Patents
Treatment method of graphite dust Download PDFInfo
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- CN104492599B CN104492599B CN201410733494.4A CN201410733494A CN104492599B CN 104492599 B CN104492599 B CN 104492599B CN 201410733494 A CN201410733494 A CN 201410733494A CN 104492599 B CN104492599 B CN 104492599B
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Abstract
The invention discloses a treatment method of graphite dust. The treatment method of the graphite dust comprises the following steps: introducing gas containing graphite dust into an electrostatic dust removal mechanism containing at least one electrode; and enabling the electrode to generate heat when the graphite dust attached to the electrode reaches a set quality, so that the graphite dust burns on the electrode, wherein the electrode material is a resistance wire material. By using the electrostatic adsorption principle, the graphite dust is collected, is attached to a resistance wire, and then is burnt, thus dust absorption, collection and pollution-free treatment of the graphite dust are achieved.
Description
Technical field
The invention belongs to waste recovery technical field, particularly relate to a kind of graphite dust and collect and the method for nuisanceless disposal.
Background technology
Owing to graphite material is fragile material and does not generally use coolant in the course of processing, in the mechanical processing process of graphite material, therefore easily produce a large amount of dust-like chips.There is adverse effect in dust-like graphite chip not only health to Field Force, and owing to graphite has electric conductivity, and graphite dust easily causes around electric-control system or the short circuit of electrical network thus accidents caused.
The Collecting and dealing of graphite chip is one of major issue of facing in graphite parts production process.Existing dedusting method mainly uses the mode of physics dedusting i.e. to use vacuum cleaner chip to be collected in certain container, or the method that the air containing graphite chip is filtered by employing liquid.During the collection of graphite chip, not only efficiency of dust collection is required higher, also need the secondary pollution preventing the graphite chip collected from environment being caused simultaneously.For the graphite chip collected, its subsequent treatment Ye Shi enterprise problems faced.Due to the usual negligible amounts of graphite chip collected, the conventional processing mode such as bury easily causes soil or water pollutes.Efficiently collecting and nuisanceless disposal of graphite chip can be realized, be the machining graphite enterprise problem of needing solution badly.
The principle of electrostatic precipitation is that dusty gas is ionized through high-voltage electrostatic field, after grit is combined the upper negative electricity of band with anion, tends to anode surface electric discharge and deposits, i.e. utilize electrostatic field to make gas ionization so that dust particles is adsorbed onto the collecting method on electrode.Along with producing improving constantly of intensity, people it is also proposed higher requirement for the serviceability of electrostatic precipitator.
Summary of the invention
The defect that the present invention exists to overcome prior art, it is an object of the invention to provide and can thoroughly, effectively collect for the graphite dust produced in current graphite material working angles and the graphite dust after collecting carries out the apparatus and method of nuisanceless disposal.
A kind of graphite dust processing method, it is the gas of graphitiferous dust to be passed through in the electrostatic precipitation mechanism including at least one electrode, and make electrode generate heat when the graphite dust being attached on electrode reaches scheduled volume, and then make graphite dust burn on electrode, wherein, described electrode material is resistance wire material.
Electrostatic precipitation mechanism of the present invention is that application electrostatic precipitation principle carries out the mechanism of dust, described in be contained in the colelctor electrode as electrostatic precipitation of the electrode in electrostatic precipitation mechanism, be used for adsorbing graphite dust.
Resistance wire material of the present invention is preferably the material that can make graphite burning under the voltage of 110V ~ 380V.Those skilled in the art can select according to prior art, further, it is preferable to be Fe-Cr-Al wire, nichrome wire, molybdenum filament, tantalum wire.
The processing method of graphite dust of the present invention preferably described in the amount of graphite dust that is attached on electrode obtained by the resistance variations measuring electrode.
Owing to graphite is conductor, when graphite dust absorption is on electrode, the knots modification of the change of electrode resistance, i.e. resistance value can be caused can to reflect graphite dust deposition on electrode.
Further, the processing method of graphite dust of the present invention is carried out in following graphite dust processing means:
A kind of graphite dust processing means, including dust collection mechanism and dedusting mechanism, described dedusting mechanism includes:
Dedusting passage；
At least one is positioned at the electrode in dedusting passage, and described electrode material is resistance wire material；
At least one inlet channel, described inlet channel is for being passed through the gas containing graphite dust, combustion aiding gas or both mixing to dedusting passage；
For detecting the detection device of the dust concentration of dedusting channel exit；
At least one electric supply installation.
Graphite dust processing means of the present invention includes that dedusting mechanism, described dedusting mechanism are to carry out electrostatic precipitation and the mechanism of burning dedusting.The electrode colelctor electrode as electrostatic precipitation being positioned at dedusting passage of the present invention, connects the positive pole of electric supply installation；The selection of the sparking electrode of described electrostatic precipitation and be set to the state of the art, those skilled in the art can select according to prior art and arrange, it can be the corona wire being arranged in dedusting passage, it is possible to for dedusting passage wall body etc., connect electric supply installation negative pole.
The present invention selects resistance wire material, and as electrode, it can play the effect of electrostatic precipitation under high pressure (voltage of the highest end finger 20kV ~ 800kV), and graphite dust is adsorbed in electrode surface；When the graphite dust being adsorbed on electrode reach a certain amount of after, electrode is then made to play the heat effect of resistance wire in low pressure (voltage of the lowest end finger 110V ~ 380V), make the graphite burning being attached on electrode, produce carbon dioxide, thus reach the purpose of graphite dust nuisanceless disposal.
Graphite dust processing means of the present invention includes one or more inlet channel, for being passed through the gas containing graphite dust, combustion aiding gas or both mixing to dedusting passage；Further, it is preferable to include an inlet channel, for being passed through the gas containing graphite dust, combustion aiding gas or both mixing to dedusting passage.
The detection device of the dust concentration for detecting dedusting channel exit of the present invention is commercially available, or prepares according to method disclosed in prior art, and those skilled in the art can select according to prior art and arrange.
Graphite dust of the present invention processes and includes at least one electric supply installation, and described electric supply installation needs to provide 20kV ~ 800kV and 110V ~ 380V output voltage.When electric supply installation is for can be one, it can provide 20kV ~ 800kV and the electric supply installation of 110V ~ 380V output voltage；May also comprise two electric supply installations, one of them electric supply installation can provide 20kV ~ 800kV output voltage, and another electric supply installation can provide 110V ~ 380V output voltage.
One optimal way of graphite treatment device of the present invention is: graphite treatment device of the present invention farther includes controller, described controller for obtaining the dust concentration of dedusting channel exit from detection device, and control the voltage of electric supply installation according to dust concentration and reach predetermined value, and control to be passed through the flow of combustion aiding gas in dedusting passage according to dust concentration and reach predetermined value.
In the process carrying out graphite composite powder dedusting, first electric supply installation is made to carry out high voltage supply, graphite dust is made to be adsorbed on electrode by electrostatic interaction, when Electrostatic Absorption reaches saturated, the concentration of graphite dust of dedusting channel exit arrives predetermined value, control electric supply installation and be converted to low-voltage power supply by high voltage supply, and make combustion aiding gas be passed through in dedusting passage simultaneously, make graphite dust burn.
Another optimal way of graphite treatment device of the present invention is: described device includes controller and resistance measurement device, and described resistance measurement device is for measuring the resistance of electrode；Described controller for obtaining the variable quantity of electrode resistance from resistance measurement device, and reach predetermined value according to the voltage controlling electric supply installation of the variable quantity of electrode resistance, and control to be passed through the flow of combustion aiding gas in dedusting passage according to the variable quantity of electrode resistance and reach predetermined value.
Owing to graphite is conductor, when graphite dust absorption is on electrode, the change of electrode resistance can be caused, the i.e. knots modification of resistance value can reflect graphite dust deposition on electrode, when deposition reaches a timing, controller controls electric supply installation and is converted to low-voltage power supply by high voltage supply, and makes combustion aiding gas be passed through in dedusting passage simultaneously, makes graphite dust burn.Preferably when resistance change is more than 80%, controller controls electric supply installation and carries out low-voltage power supply and control to be passed through combustion aiding gas in dedusting passage.
Combustion aiding gas of the present invention is preferably oxygen or the oxygen content air higher than 50%.
The preferred described dust collection mechanism of graphite treatment device of the present invention includes:
Compressed air source；
At least one dust collect plant, the negative pressure that described dust collect plant is produced by compressed air sucks graphite dust；
For detecting the detection device of the dust concentration in dust collect plant exit；
Controller, described controller for obtaining the dust concentration in dust collect plant exit from detection device, and control whether to make the gas containing graphite dust enter dedusting passage according to dust concentration, and according to whether there is the gas containing graphite dust to enter dedusting passage, controls electric supply installation in dedusting mechanism and be powered.
Dust collect plant of the present invention preferably includes suction port, and this suction port is free end, is used for drawing graphite dust, and the suction port other end is by pipeline communication compressed air source, dedusting feeder connection and the outlet of dust collect plant.Graphite dust self-dust-suction mouth is sucked in dust collect plant by the negative pressure that dust collect plant utilizes compressed air to produce, and dust collect plant includes the pipeline connecting the outlet of dedusting passage and dust collect plant, and pipeline is provided with valve.
The detection device of the dust concentration for detecting dust collect plant exit of the present invention is commercially available, or prepares according to method disclosed in prior art, and those skilled in the art can select according to prior art and arrange.Described controller obtains the dust concentration in dust collect plant exit, and when the concentration of graphite dust meets discharge standard, controller controls suction port and dust collect plant outlet, makes the air-flow containing graphite dust be directly discharged in air；When the concentration of graphite dust does not meets discharge standard, controller controls suction port and connects with dedusting feeder connection, makes the air-flow containing graphite dust enter dedusting passage and open electric supply installation, carries out electrostatic precipitation.Further, controller noted above is simultaneously used for obtaining the dust concentration of dedusting channel exit from detection device, and controls whether to be passed through the air-flow containing graphite dust in dedusting passage according to dust concentration.
Controller in dedusting mechanism of the present invention and the controller of dust collection mechanism, can individually be arranged, it is possible to integrally disposed is a controller.
Each gas channel of the present invention is all by necessary pipeline communication, and is provided with the valve controlling its connectedness as required on pipeline.
Compared with prior art, the collection of dust-like dust produced in the present invention had the beneficial effect that graphite mechanical processing process and nuisanceless disposal, prevent harm that machine tool, operator cause by dust and the secondary pollution to environment.Utilize electrostatic absorption principle, graphite dust in compressed air is collected, and graphite dust is sticked on resistance wire, by resistance wire is heated, make the graphite being attached on resistance wire fully burn, and then realize dust suction, collection and nuisanceless disposal to graphite dust.Graphite dust can be collected thoroughly, effectively and the graphite chip dust after collecting is carried out nuisanceless disposal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of graphite dust processing means；
Fig. 2 is graphite dust collection phase signal flow graph；
Fig. 3 is graphite dust combustion phases signal flow graph；
Fig. 4 is that the circuit of graphite dust processing means connects sketch；
Reference is as follows: 1 dust gathering arrester, 2 magnet pieces, 3 gas inlet tubes, 4 hoses, 5 two position three-way valve I, 6 dust concentration monitor I, 7 gas outlet tubes, 8 guiding tubes, 9 housings, 10 curve pipes, 11 resistance wires, 12 exhaustors, 13 dust concentration monitor II, 14 two position three-way valve II.
Detailed description of the invention
In following embodiment, dust concentration monitor used and dust concentration monitor II all use Germany's Ford's generation standard type dust instrument, and model is PFM02；Resistance wire uses Kanthal wire, a diameter of 1.5mm, a length of 5m；Curve pipe uses stainless steel material, and resistance instrument uses uncommon agate (SMART) AR3127, and electric supply installation uses the power-supply system that model is Cygnus that bohr high voltage power supply company limited produces.
Embodiment
1
A kind of graphite dust processing means, a kind of graphite dust processing means, including dust collection mechanism and dedusting mechanism.
Dedusting mechanism includes: curve pipe 10；The guiding tube 8 being connected with curve pipe 10 porch；The exhaustor 12 being connected with curve pipe 8 exit；It is positioned at the resistance wire 11 of curve pipe；For detecting the dust concentration monitor II13 of the dust concentration of dedusting channel exit；Electric supply installation, wherein, electric supply installation positive pole connecting resistance silk 11, negative pole connects curve pipe 10；Resistance instrument.
Dust collection mechanism includes: compressed air source；As the dust gathering arrester 1 of dust suction inlet, dust gathering arrester 1, external stability magnet piece 2；Dust gathering arrester 1 connects hose 4, and hose 4 communicates with gas inlet tube 3, and gas inlet tube 3 is provided with two position three-way valve I6 and two position three-way valve II14；Two position three-way valve I6 is had to connect gas outlet tube 7 and guiding tube 8；Two position three-way valve II14 connects compressed air source and source of oxygen by pipeline；For detecting the dust concentration monitor I6 of the dust concentration at gas outlet tube 7.
Described device includes that controller, described control unit include control unit I and control unit II, and described control unit I is for obtaining the dust concentration at gas outlet tube 7 from dust concentration monitor I6, and works as dust concentration equal to or more than 1g/m3Time control two position three-way valve I5 and make the gas arrival curve pipe 10 containing graphite dust, and when two position three-way valve I5 makes the gas arrival curve pipe 10 containing graphite dust, control electric supply installation in dedusting mechanism and carry out high voltage supply；Described control unit II for obtaining the variable quantity of electrode resistance from resistance instrument, and when resistance change is more than 80%, control unit II controls electric supply installation and carries out low-voltage power supply and control two position three-way valve II14 and be passed through oxygen in dedusting passage；When the testing result of dust concentration monitor II13 is that dust concentration is less than 1g/m3Time, control unit I controls two position three-way valve I5 and two position three-way valve II14, makes the gas containing graphite dust discharge from gas outlet tube 7.
The method utilizing said apparatus to carry out graphite dust collection and nuisanceless disposal, comprises the steps:
Step 1: be passed through the compressed gas that pressure is 1MPa ~ 10MPa in gas inlet tube 3, the passage of gas inlet tube 3 to gas outlet tube 7 is opened；Compressed air, by producing negative pressure during gas inlet tube 3 in hose 4, i.e. produces gas flow from dust gathering arrester 1 to gas inlet tube 3, and gas passes through after two position three-way valve I5, is that dust concentration is less than 1g/m through the testing result of dust concentration monitor I63Discharged by gas outlet tube 7；
Step 2: when the testing result of dust concentration monitor I6 is that dust concentration is less than 1g/m3Time, continue step 1；When the testing result of dust concentration monitor I6 is that dust concentration equals to or more than 1g/m3Time, continue step 3；
Step 3: control unit controls two position three-way valve I5 and closes the passage of gas inlet tube 3 to gas outlet tube 7；Open the passage of 8 between gas inlet tube 3 and guiding tube simultaneously；Gas containing graphite dust will enter dedusting mechanism by guiding tube 8；
Step 4: control unit controls electric supply installation and carries out high voltage supply, and setting voltage is 40kV ~ 100kV, forms electrostatic field, i.e. utilizes electrostatic precipitation principle to by the another process dust removal process of curve pipe 10 between resistance wire 11 and curve pipe 10；Gas containing graphite dust passes through guiding tube 8 arrival curve pipe 10, and under the effect of electrostatic field, the graphite dust in gas is adsorbed by resistance wire 11；
Step 5: the gas after dedusting is discharged by exhaustor 12, as dust concentration monitor II in gas is by exhaustor 12, testing result dust concentration is not more than 1g/m3Time, continue step 4；Dust concentration equals to or more than 1g/m3Time, carry out step 6；
Step 6；Electric supply installation increases the voltage between resistance wire and curve pipe to 100kV ~ 500kV, the dust collecting capability of raising resistance wire；
Step 7: the resistance value of resistance instrument detection resistance wire, when the knots modification of resistance wire resistance reaches 80%, control unit controls two position three-way valve II14, closes the compressed gas flowing to curve pipe 10, and is passed through the oxygen that pressure is 10MPa ~ 30MPa；Control electric supply installation simultaneously and resistance wire two ends are applied the voltage of 110V ~ 380V, make the graphite dust adhered on resistance wire fully burn；
Step 8: dust concentration monitor II13 detects by the gas of exhaustor 12, if the dust concentration that dust concentration monitor II12 detects is more than 1g/m3, then electric supply installation improves the voltage at resistance wire two ends to 380V, and improves the pressure of oxygen to 30MPa, makes the graphite dust adhered on resistance wire fully burn.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (5)
1. a graphite dust processing method, it is the gas of graphitiferous dust to be passed through in the electrostatic precipitation mechanism including at least one electrode, and make electrode generate heat when the graphite dust being attached on electrode reaches scheduled volume, and then make graphite dust burn on electrode, wherein, described electrode material is resistance wire material；Described resistance wire material is the material that can make graphite burning under the voltage of 110V ~ 380V；The amount of the described graphite dust being attached on electrode is obtained by the resistance variations measuring electrode；Described method is carried out in graphite dust processing means, and described device includes that dust collection mechanism and dedusting mechanism, described dedusting mechanism include: dedusting passage；At least one is positioned at the electrode in dedusting passage, and described electrode material is resistance wire material；At least one inlet channel, described inlet channel is for being passed through the gas containing graphite dust, combustion aiding gas or both mixing to dedusting passage；For detecting the detection device of the dust concentration of dedusting channel exit；At least one electric supply installation.
Method the most according to claim 1, it is characterised in that: described electric supply installation is for providing 20kV ~ 800kV and the electric supply installation of 110V ~ 380V output voltage.
Method the most according to claim 1 and 2, it is characterized in that: described graphite dust processing means includes controller, described controller for obtaining the dust concentration of dedusting channel exit from detection device, and control the voltage of electric supply installation according to dust concentration and reach predetermined value, and control to be passed through the flow of combustion aiding gas in dedusting passage according to dust concentration and reach predetermined value.
Method the most according to claim 1, it is characterised in that: described graphite dust processing means includes controller and resistance measurement device, and described resistance measurement device is for measuring the resistance of electrode；Described controller for obtaining the variable quantity of electrode resistance from resistance measurement device, and reach predetermined value according to the voltage controlling electric supply installation of the variable quantity of electrode resistance, and control to be passed through the flow of combustion aiding gas in dedusting passage according to the variable quantity of electrode resistance and reach predetermined value.
Method the most according to claim 1, it is characterised in that: described dust collection mechanism includes:
Compressed air source；At least one dust collect plant, the negative pressure that described dust collect plant is produced by compressed air sucks graphite dust；For detecting the detection device of the dust concentration in dust collect plant exit；Controller, described controller for obtaining the dust concentration in dust collect plant exit from detection device, and control whether to make the gas containing graphite dust enter dedusting passage according to dust concentration, and according to whether there is the gas containing graphite dust to enter dedusting passage, controls electric supply installation in dedusting mechanism and be powered.
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| CN201410733494.4A CN104492599B (en) | 2014-12-08 | 2014-12-08 | Treatment method of graphite dust |
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| CN201410733494.4A CN104492599B (en) | 2014-12-08 | 2014-12-08 | Treatment method of graphite dust |
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| CN104492599B true CN104492599B (en) | 2017-01-11 |
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| CN106807712A (en) * | 2017-03-13 | 2017-06-09 | 江苏伟建工具科技有限公司 | A kind of device of the rearmounted despumation of high speed steel wire production line |
| CN114602922B (en) * | 2022-04-18 | 2024-01-09 | 恒达富士电梯有限公司 | Dedusting method and device for elevator cooperative production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT400245B (en) * | 1993-12-10 | 1995-11-27 | Voest Alpine Ind Anlagen | METHOD AND SYSTEM FOR PRODUCING A MELTING IRON |
| CN101670350B (en) * | 2009-09-16 | 2011-06-08 | 烟台鲁宝钢管有限责任公司 | Device for absorbing graphite dust |
| CN201572784U (en) * | 2009-10-30 | 2010-09-08 | 烟台鲁宝钢管有限责任公司 | Movable graphite dust-collection device |
| CN201613093U (en) * | 2009-11-27 | 2010-10-27 | 洛阳市冠奇工贸有限责任公司 | Graphite dust recovering system |
| CN103239963A (en) * | 2013-05-17 | 2013-08-14 | 安徽理工大学 | Graphite dust collector |
| CN104107602A (en) * | 2014-05-14 | 2014-10-22 | 河南龙成煤高效技术应用有限公司 | On-line regeneration method of deduster filter core used in high-temperature inflammable dust environment |
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