CN107911932A - A kind of double lance type becomes the device and method of arc plasma treatment flying dust - Google Patents
A kind of double lance type becomes the device and method of arc plasma treatment flying dust Download PDFInfo
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- CN107911932A CN107911932A CN201711252515.0A CN201711252515A CN107911932A CN 107911932 A CN107911932 A CN 107911932A CN 201711252515 A CN201711252515 A CN 201711252515A CN 107911932 A CN107911932 A CN 107911932A
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- 239000000428 dust Substances 0.000 title claims abstract description 71
- 238000009832 plasma treatment Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 15
- 239000006004 Quartz sand Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000155 melt Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001080 W alloy Inorganic materials 0.000 claims description 3
- 239000003570 air Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000003306 harvesting Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/20—Supplementary heating arrangements using electric energy
- F23G2204/201—Plasma
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/30—Solid combustion residues, e.g. bottom or flyash
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Environmental & Geological Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Furnace Details (AREA)
- Plasma Technology (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention relates to the device and method that a kind of double lance type becomes arc plasma treatment flying dust, including：The feed inlet and exhaust outlet of housing upper are arranged at, is micro-vacuum state in the housing；Positioned at the discharge port of housing bottom, the discharge port is equipped with baffle；Two plasma guns of upper of furnace body are disposed through, the plasma arc spout of the plasma gun is located at the top for the flying dust for being mixed with quartz sand, and the flying dust is located at bottom in furnace body；It is molten condition that plasma arc, which melts flying dust, untransferable arc, conjunct arc and transferred arc can be carried out between the electrode of two plasma guns to switch, two plasma guns are connected with gas station and power supply respectively, change the polarity of electrode in two plasma guns by the power supply, make to produce transferred-arc plasma between two gun bodies, heat loss is advantageously reduced, improves the service life of nozzle external electrode.
Description
Technical field
The invention belongs to technical field of waste treatment, and in particular to a kind of double lance type becomes the dress of arc plasma treatment flying dust
Put.
Background technology
Containing harmful heavy metal materials such as substantial amounts of Cd, Cr, Ni, Pb in incineration of refuse flyash, and many height are adsorbed
The persistence organic pollutant of toxicity difficult degradation.Therefore,《National Hazard waste register》Clear stipulaties its be hazardous waste, it is necessary to
Through overstabilization, harmless treatment.At present, the processing method of more common incineration of refuse flyash mainly has isolation technics, cures
Stabilization technology and heat treatment technics.
Plasma technique can be used for rubbish as a kind of new technology being used widely in the industry in recent years
The processing of flying ash.Compared with traditional heat treatment technics, heat plasma technology has the temperature and energy density of higher,
It can realize the vitrifying of flying dust, suppress heavy metal transformation, it is considered to be one of harmless most effective approach of processing of flying dust.
Plasma technology is divided into two kinds of transferred arc and untransferable arc, and the plasma gun of transferred-arc plasma is cathode, palpus
Transferred-arc plasma could be produced by obtaining an external outer anode, and transferred-arc plasma technology utilization rate of electrical is higher, but to not
Conductive material is helpless；The positive and negative anodes of non-transferred arc plasma inside a plasma gun, with transferred arc etc. from
Son is compared, and untransferable arc plasma apparatus structure is increasingly complex, and price is more expensive, and utilization rate of electrical is relatively low, runs into
This is larger.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of double lance type becomes the device of arc plasma treatment flying dust, this hair
It is bright by there are striking, overcoming traditional transferred-arc plasma processing flying dust between the electrode of two plasma guns under molten condition
The defects of striking is difficult, improves the efficiency of untransferable arc plasma treatment flying dust.Flying dust is handled using rush-harvesting and rush-planting, melting flying dust is more
Add fully, the intermediate polarity of rush-harvesting and rush-planting can switch mutually, avoid two gun body internal electrode scaling loss non-uniform phenomenons, reduce place
Manage the manufacture difficulty of flying dust transferred arc plasma furnace.
To solve the above problems, the technical solution adopted by the present invention is：
A kind of double lance type becomes the device of arc plasma treatment flying dust, including：It is arranged at the feed inlet and exhaust outlet of upper of furnace body, institute
It is micro-vacuum state to state in housing；Positioned at the discharge port of bottom of furnace body, the discharge port is equipped with baffle；It is disposed through on furnace body
Two plasma guns in portion, the plasma arc spout of the plasma gun is located at the top for the flying dust for being mixed with quartz sand, described to fly
Ash is located at bottom of furnace body；It is molten condition that the plasma arc that the spout sprays, which melts flying dust,；Two plasma guns point
It is not connected with gas station and power supply, changes two when there are during striking, passing through the power supply between the electrode of two plasma guns
The polarity of electrode in a plasma gun.
Further, the gap between the interior electrode and external electrode of the plasma gun is 5 ~ 10mm.
Further, the material of the interior electrode is made of tungsten alloy or graphite, and the material of the external electrode is by graphite
Or Cu alloy material is made.
Further, the material of the furnace body is heat resisting steel or other steel, its inside is equipped with refractory brick, and outer disk has cold
Water pipe.
Further, further include cooling-water machine and switching cabinet, wherein, it is described switching cabinet respectively with the cooling-water machine and the electricity
Source connects, for electric energy and the cooling water to be inputted in the plasma gun by water power cable.
Further, the gas station includes argon gas, nitrogen, air and combustion gas for the gas that plasma gun provides.
Further, two plasma guns are arranged in parallel.
Meanwhile the present invention provides a kind of device progress flying dust processing for becoming arc plasma treatment flying dust using double lance type
Method, it is characterised in that comprise the following steps：
1）The flying dust for being mixed with quartz sand is passed through into furnace body；
2）Power supply is opened, the interior electrode of two plasma guns is cathode, and dispatch from foreign news agency extremely anode, forms between interior electrode, external electrode
Untransferable arc, heats flying dust using untransferable arc；
3）After fusing fly ash forms large stretch of molten bath, change plasma gun in polarity flying dust is heated, make two gun bodies it
Between plasma arc conjunct arc is changed into from untransferable arc, and then be changed into transferred arc, flying dust finally heated in the form of transferred arc；
4）During all molten condition of the flying dust of furnace interior, baffle is opened, flows out lava.
Further, two plasma guns are respectively No.1 plasma gun and No. two plasma guns, the step 3）Middle electricity
The change of pole polarity is specially：
Originally, certain plasma arc is produced between the anode meeting of No.1 plasma gun and the cathode of No. two plasma guns, No. two
The anode of plasma gun produces certain plasma arc with the cathode of No.1 plasma gun；Change electrode in No.1 plasma gun
Polarity, makes the interior electrode of No.1 plasma gun be changed into anode from cathode, and the interior electrode of No.1 plasma gun and external electrode are equal at this time
For anode, and certain plasma arc is produced between the cathode of meeting and No. two plasma guns；
Change the polarity of No.1 plasma gun external electrode, external electrode is switched to cathode, at this time the interior electrode meeting of No.1 plasma gun
Produce plasma arc between the interior electrode of No. two plasma guns, the external electrode of No.1 plasma gun and No. two plasma guns it is outer
Certain plasma arc is produced between electrode, forms conjunct arc state at this time；
When the plasma arc between No.1 plasma gun and No. two plasma guns is stablized, the circuit of the two external electrode of cut-out, makes
Plasma arc is only occurred between the interior electrode of No.1 plasma gun and the interior electrode of No. two plasma guns, forms transferred arc at this time
State.
Further, the quartz sand of 15-30% is mixed with the flying dust.
The beneficial effects of the present invention are：The present invention is drawn by existing between the electrode of two plasma guns under molten condition
Arc, overcomes the defects of traditional transferred-arc plasma processing flying dust striking is difficult, improves untransferable arc plasma treatment flying dust
Efficiency.Flying dust is handled using rush-harvesting and rush-planting, melting flying dust is more abundant, and the intermediate polarity of rush-harvesting and rush-planting can switch mutually, avoid two
Gun body internal electrode scaling loss non-uniform phenomenon, reduces the manufacture difficulty of processing flying dust transferred arc plasma furnace.
Brief description of the drawings
Fig. 1 is the device of the invention overall schematic.
Fig. 2 is the rush-harvesting and rush-planting untransferable arc schematic diagram of the present invention.
Fig. 3 is the rush-harvesting and rush-planting conjunct arc schematic diagram of the present invention.
Fig. 4 is the rush-harvesting and rush-planting transferred arc schematic diagram of the present invention.
Wherein, No.1 plasma gun 1, No. two plasma guns 2, feed inlet 3, exhaust outlet 4, interior electrode 5, external electrode 6, wait from
Subarc 7, molten bath 8, baffle 9, furnace body 10, flying dust 11, gas station 111, power supply 112, water cooling unit 113, cabinet 114 of transferring.
Embodiment
In order to make those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.It note that the embodiments described below is exemplary, be only used for explaining the present invention, and
It is not considered as limiting the invention.Particular technique or condition are not specified in embodiment, according to document institute in the art
The technology or condition of description are carried out according to product description.Reagents or instruments used without specified manufacturer, being can
With conventional products that are commercially available.
In the description of the present invention, it is to be understood that term " first ", " second " are only used for description purpose, and cannot
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the present invention,
" multiple " are meant that two or more, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
According to an aspect of the present invention, the present invention provides a kind of double lance type become arc plasma treatment flying dust device,
Fig. 1 is the device of the invention overall schematic, as shown in Figure 1, including：It is arranged at the feed inlet and exhaust outlet of upper of furnace body, position
In the discharge port of bottom of furnace body, the discharge port is equipped with baffle, is disposed through two plasma guns of upper of furnace body, described etc.
The plasma arc spout of ion gun is located at the top for the flying dust for being mixed with quartz sand, and the flying dust is located at bottom in furnace body, plasma
It is molten condition that arc, which melts flying dust, there are striking between the electrode of two plasma guns, two plasma guns respectively with
Gas station is connected with power supply, changes the polarity of electrode in two plasma guns by the power supply.
Thus, the present invention between the electrode of two plasma guns under molten condition by, there are striking, overcoming tradition and turning
The defects of arc plasma treatment flying dust striking is difficult is moved, improves the efficiency of untransferable arc plasma treatment flying dust.Using rush-harvesting and rush-planting
Flying dust is handled, melting flying dust is more abundant, and the intermediate polarity of rush-harvesting and rush-planting can switch mutually, avoid two gun body internal electrode scaling loss
Non-uniform phenomenon, reduces the manufacture difficulty of processing flying dust transferred arc plasma furnace.
According to a particular embodiment of the invention, there is 1 ~ 3 millimeter of gap between plasma gun and furnace body, furnace interior is micro-
Negative pressure state, makes the exhaust gas that furnace interior produces not overflowed among furnace body and comes.
According to a particular embodiment of the invention, the gap between the interior electrode and external electrode of the plasma gun for 5 ~
10mm, by tungsten alloy, either the material of the external electrode is made by graphite or copper alloy material in graphite to the material of the interior electrode
Material is made, in the use of the present invention, interior electrode is anode, dispatch from foreign news agency extremely cathode, but found in the actual course of work, sun
The scaling loss degree of pole is more than the scaling loss degree of cathode, therefore, using the polarity for exchanging electrode in plasma gun at regular intervals
Mode, extend the service life of internal and external electrode, using vertical rush-harvesting and rush-planting technology, multiple operation between rush-harvesting and rush-planting, reduces electrode
The scaling loss of incisal bevel.
According to a particular embodiment of the invention, the external feed pipe of feed inlet on furnace body, flying dust enter furnace body by feed inlet
Inside, exhaust outlet externally connected exhaust pipe, the exhaust gas produced in stove are discharged by exhaust outlet, the material of furnace body for heat-resisting steel material or other
Material, inside are equipped with refractory brick, and outer disk has cold water pipe, it functions as container melting flying dust, reduce further processing
The manufacture difficulty of flying dust transferred arc plasma furnace.
According to a particular embodiment of the invention, gas station includes argon gas, nitrogen, air and combustion for the gas that plasma gun provides
Gas etc., certainly, the present invention have no particular requirement for dielectric gas, as long as the plasma arc for making fusing fly ash can be produced.
According to a particular embodiment of the invention, as shown in Figure 1, present invention additionally comprises cooling-water machine and switching cabinet, wherein, it is described
Switching cabinet is connected with the cooling-water machine and the power supply respectively, for electric energy and the cooling water to be passed through described in the input of water power cable
In plasma gun, for each plasma gun respectively with there is water power cable to be connected thereto, switching cabinet also has conversion circuit, changes plasma gun
The effect of polarity of electrode.
According to another aspect of the present invention, Fig. 2 is the rush-harvesting and rush-planting untransferable arc schematic diagram of the present invention, and Fig. 3 is the double of the present invention
Rifle conjunct arc schematic diagram, Fig. 4 are the rush-harvesting and rush-planting transferred arc schematic diagram of the present invention, and as shown in Figure 2,3, 4, the present invention provides a kind of profit
The method for carrying out flying dust processing with the device of double lance type change arc plasma treatment flying dust, comprises the following steps：
1）The flying dust for being mixed with quartz sand is passed through into furnace body；
2）Power supply is opened, the interior electrode of two plasma guns is cathode, and dispatch from foreign news agency extremely anode, forms between interior electrode, external electrode
Untransferable arc, heats flying dust using untransferable arc；
3）After fusing fly ash forms molten bath, the polarity changed in plasma gun heats flying dust, makes between two gun bodies
Plasma arc is changed into conjunct arc from untransferable arc, and then is changed into transferred arc, and flying dust is finally heated in the form of transferred arc；Wherein,
After the change of polarity of electrode is specifically, fusing fly ash forms large stretch of molten bath, two plasma guns with different charge electrodes it
Between produce plasma arc, change the polarity of the interior electrode or external electrode of two plasma guns so that produced between two plasma guns
Raw conjunct arc, when the plasma arc between two plasma guns is stablized, cuts off the circuit of two plasma gun external electrodes, wait from
Subarc is only occurred between the interior electrode of two plasma guns, and plasma arc at this time is transferred arc.
4）During all molten condition of the flying dust of furnace interior, baffle is opened, flows out lava.
According to a particular embodiment of the invention, two plasma guns are respectively No.1 plasma gun and No. two plasma guns,
The step 3）The change of middle polarity of electrode is specially：Originally, the anode of No.1 plasma gun can be with the moon of No. two plasma guns
Produce certain plasma arc between pole, the anode of No. two plasma guns and the cathode of No.1 plasma gun produce certain grade from
Subarc；The polarity of electrode in No.1 plasma gun is changed, the interior electrode of No.1 plasma gun is changed into anode from cathode, at this time one
The interior electrode of number plasma gun and external electrode are anode, and produced between the cathode of meeting and No. two plasma guns certain grade from
Subarc；Change the polarity of No.1 plasma gun external electrode, external electrode is switched to cathode, at this time the interior electrode meeting of No.1 plasma gun
Produce plasma arc between the interior electrode of No. two plasma guns, the external electrode of No.1 plasma gun and No. two plasma guns it is outer
Certain plasma arc is produced between electrode, forms conjunct arc state at this time；When No.1 plasma gun and No. two plasma guns it
Between plasma arc when stablizing, the circuit of the two external electrode of cut-out, makes plasma arc only occur in the interior electricity of No.1 plasma gun
Between the interior electrode of pole and No. two plasma guns, transferred arc state is formed at this time.
According to a particular embodiment of the invention, the quartz sand of 15-30% is mixed with the flying dust.
Embodiment one
In operational process, as shown in Figure 1, No.1 plasma gun and the strikings at the same time of No. two plasma guns, interior electrode is cathode, dispatch from foreign news agency
Extremely anode, is formed untransferable arc between internal and external electrode, flying dust is heated using untransferable arc.
After fusing fly ash forms large stretch of molten bath, such as Fig. 2, the anode of No.1 plasma gun can be with the moon of No. two plasma guns
Produce certain plasma arc between pole, the anodes of No. two plasma guns can also produce certain etc. with the cathode of No.1 plasma gun
Ion arc；The polarity of No.1 plasma gun cathode is changed, the interior electrode for making No.1 plasma gun is anode, at this time No.1 plasma
The interior electrode of rifle and external electrode are anode, and produce certain plasma arc between the cathode of meeting and No. two plasma guns.
Change the polarity of No.1 plasma gun external electrode, external electrode is switched to cathode, at this time the interior electricity of No.1 plasma gun
Plasma arc, the external electrode of No.1 plasma gun and No. two plasma guns are produced between the interior electrode of pole meeting and No. two plasma guns
External electrode between produce certain plasma arc, at this time formed Fig. 2 in conjunct arc state.
When the plasma arc between No.1 plasma gun and No. two plasma guns is stablized, the electricity of the two external electrode of cut-out
Road, makes plasma arc only occur between the interior electrode of No.1 plasma gun and the interior electrode of No. two plasma guns, is formed at this time
Transferred arc state in Fig. 3.
When it is lava that the flying dust of furnace interior, which all melts, baffle is opened, flows out lava, while open feed inlet,
Flying dust is set continuously to input in stove.
Since anode scaling loss is more severe than cathode scaling loss, the pole of electrode in two plasma guns is exchanged at regular intervals
Property.
The present invention between the electrode of two plasma guns under molten condition by, there are striking, overcoming tradition in summary
The defects of transferred-arc plasma processing flying dust striking is difficult, improves the efficiency of untransferable arc plasma treatment flying dust.Using double
Rifle handles flying dust, and melting flying dust is more abundant, and the intermediate polarity of rush-harvesting and rush-planting can switch mutually, avoids two gun body internal electrodes and burns
Non-uniform phenomenon is damaged, reduces the manufacture difficulty of processing flying dust transferred arc plasma furnace.
In the description of the present invention, it is to be understood that term " first ", " second " are only used for description purpose, and cannot
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
Combined in an appropriate manner in a or multiple embodiments or example.In addition, without conflicting with each other, the skill of this area
Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature
Close and combine.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, meanwhile, for those of ordinary skill in the art, the think of according to the application
Think, in specific embodiments and applications there will be changes.
Claims (10)
1. a kind of double lance type becomes the device of arc plasma treatment flying dust, it is characterised in that including：
The feed inlet and exhaust outlet of upper of furnace body are arranged at, is micro-vacuum state in the housing；
Positioned at the discharge port of bottom of furnace body, the discharge port is equipped with baffle；
Two plasma guns of upper of furnace body are disposed through, the plasma arc spout of the plasma gun, which is located at, is mixed with quartz sand
Flying dust top, the flying dust is located at bottom of furnace body；It is molten condition that the plasma arc that the spout sprays, which melts flying dust,；
Two plasma guns are connected with gas station and power supply respectively, when there are striking between the electrode of two plasma guns
When, pass through the polarity of electrode in the power supply two plasma guns of change.
2. device according to claim 1, it is characterised in that between the interior electrode and external electrode of the plasma gun
Gap is 5 ~ 10mm.
3. the apparatus of claim 2, it is characterised in that the material of the interior electrode is by tungsten alloy or graphite system
Into the material of the external electrode is made of graphite or Cu alloy material.
4. device according to claim 1, it is characterised in that the material of the furnace body is heat resisting steel or other steel, its
Inside is equipped with refractory brick, and outer disk has cold water pipe.
5. device according to claim 1, it is characterised in that cooling-water machine and switching cabinet are further included, wherein, the switching cabinet
It is connected respectively with the cooling-water machine and the power supply, for electric energy and the cooling water to be inputted the plasma by water power cable
In rifle.
6. device according to claim 1, it is characterised in that the gas station includes argon for the gas that plasma gun provides
Gas, nitrogen, air and combustion gas.
7. device according to claim 1, it is characterised in that two plasma guns are arranged in parallel.
8. it is a kind of using claim 1-7 any one of them device carry out flying dust processing method, it is characterised in that including with
Lower step：
1）The flying dust for being mixed with quartz sand is passed through into furnace body；
2）Power supply is opened, the interior electrode of two plasma guns is cathode, and dispatch from foreign news agency extremely anode, forms between interior electrode, external electrode
Untransferable arc, heats flying dust using untransferable arc；
3）After fusing fly ash forms molten bath, the polarity changed in plasma gun heats flying dust, makes between two gun bodies
Plasma arc is changed into conjunct arc from untransferable arc, and then is changed into transferred arc, and flying dust is finally heated in the form of transferred arc；
4）During all molten condition of the flying dust of furnace interior, baffle is opened, flows out lava.
9. according to the method described in claim 8, it is characterized in that, two plasma guns are respectively No.1 plasma gun and No. two
Plasma gun, the step 3）The change of middle polarity of electrode is specially：
Originally, certain plasma arc is produced between the anode meeting of No.1 plasma gun and the cathode of No. two plasma guns, No. two
The anode of plasma gun produces certain plasma arc with the cathode of No.1 plasma gun；Change electrode in No.1 plasma gun
Polarity, makes the interior electrode of No.1 plasma gun be changed into anode from cathode, and the interior electrode of No.1 plasma gun and external electrode are equal at this time
For anode, and certain plasma arc is produced between the cathode of meeting and No. two plasma guns；
Change the polarity of No.1 plasma gun external electrode, external electrode is switched to cathode, at this time the interior electrode meeting of No.1 plasma gun
Produce plasma arc between the interior electrode of No. two plasma guns, the external electrode of No.1 plasma gun and No. two plasma guns it is outer
Certain plasma arc is produced between electrode, forms conjunct arc state at this time；
When the plasma arc between No.1 plasma gun and No. two plasma guns is stablized, the circuit of the two external electrode of cut-out, makes
Plasma arc is only occurred between the interior electrode of No.1 plasma gun and the interior electrode of No. two plasma guns, forms transferred arc at this time
State.
10. according to the method described in claim 8, it is characterized in that, the quartz sand of 15-30% is mixed with the flying dust.
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| CN201711252515.0A CN107911932A (en) | 2017-12-01 | 2017-12-01 | A kind of double lance type becomes the device and method of arc plasma treatment flying dust |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496009A (en) * | 2020-12-02 | 2021-03-16 | 大连易舜绿色科技有限公司 | Waste incineration fly ash treatment device and method |
| CN114260297A (en) * | 2022-03-02 | 2022-04-01 | 中国恩菲工程技术有限公司 | Device and method suitable for fly ash melting and flue gas purification treatment |
| CN115138658A (en) * | 2022-07-21 | 2022-10-04 | 北京中科润宇环保科技股份有限公司 | Harmless reduction method and device for fly ash of waste incineration power plant |
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2017
- 2017-12-01 CN CN201711252515.0A patent/CN107911932A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496009A (en) * | 2020-12-02 | 2021-03-16 | 大连易舜绿色科技有限公司 | Waste incineration fly ash treatment device and method |
| CN114260297A (en) * | 2022-03-02 | 2022-04-01 | 中国恩菲工程技术有限公司 | Device and method suitable for fly ash melting and flue gas purification treatment |
| CN114260297B (en) * | 2022-03-02 | 2022-05-20 | 中国恩菲工程技术有限公司 | Device and method suitable for fly ash melting and flue gas purification treatment |
| CN115138658A (en) * | 2022-07-21 | 2022-10-04 | 北京中科润宇环保科技股份有限公司 | Harmless reduction method and device for fly ash of waste incineration power plant |
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