CN205156641U - A dust pelletizing system that is used for hot stove in electric smelting magnesium ore deposit - Google Patents
A dust pelletizing system that is used for hot stove in electric smelting magnesium ore deposit Download PDFInfo
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- CN205156641U CN205156641U CN201520815563.6U CN201520815563U CN205156641U CN 205156641 U CN205156641 U CN 205156641U CN 201520815563 U CN201520815563 U CN 201520815563U CN 205156641 U CN205156641 U CN 205156641U
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Abstract
The utility model provides a dust pelletizing system that is used for hot stove in electric smelting magnesium ore deposit, including the smoke and dust pipeline, machine power cooler, the cold -blast valve, a weighing sensor and a temperature sensor, the hot stove electrostatic precipitator in electric smelting magnesium ore deposit, centrifugal fan, exhaust stacks, the smoke and dust of coming out of the stove of the hot stove in electric smelting magnesium ore deposit is received to the flue gas input port of machine power cooler through the smoke and dust pipeline, the output of machine power cooler is linked together through the input of smoke and dust pipeline with the hot stove electrostatic precipitator in electric smelting magnesium ore deposit, the hot stove electrostatic precipitator's in electric smelting magnesium ore deposit output is linked together through the input of smoke and dust pipeline with centrifugal fan, centrifugal fan's output intercommunication exhaust stacks, install cold -blast valve and temperature sensor on the smoke and dust pipeline between machine power cooler and the hot stove electrostatic precipitator in electric smelting magnesium ore deposit. The utility model discloses can reduce the temperature of a kiln gas rapidly, prevent that the dust remover is by high temperature flue gas scaling loss. Dust removal effect good luck line stabilization, the effectual life who prolongs the dust remover has ensured the safe operation of dust pelletizing system.
Description
Technical field
The utility model relates to the high-effective dust-removing technical field of atmosphere pollution environmental protection, particularly a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace.
Background technology
Electric-melting magnesium is the high pure oxide that high-quality giobertite is formed in electric-melting magnesium mineral hot furnace after high-temperature fusion, is the primary raw material producing special refractory for steel and iron industry.Electric-melting magnesium mineral hot furnace, particularly a kind of direct current electric-melting magnesium mineral hot furnace is a kind of Large Electric Furnace, in smelting process, the fume amount of mineral hot furnace is larger, and flue dust tapping temperature is also higher, needing to assemble flue gas dust collecting system, as directly used deduster to carry out dedusting, deduster inner facility can be caused to burn, even the scaling loss of shell of dust remover or steel construction part, has an accident.If use conventional heat-exchanger rig, one is increase floor space, increases cost and drops into; Two is that heat exchange amount is inadequate, and it is little that temperature reduces amplitude, cannot reach the condition that deduster normally runs.
In addition, currently used electric cleaner, its internal structure is the electric field that corona wire and dust collecting electrode are formed, and in common high voltage, electric field, pole span is at about 300mm, and due to electric-melting magnesium mineral hot furnace, the effect of this kind of electric cleaner is not fine.Meanwhile, the supporting insulator of dust remover roof is vulnerable to pollute in use for some time, failure of insulation and cannot send high-tension electricity.Usual employing taper insulating sleeve.When electric cleaner runs, the surface of insulator all contacts with flue dust, if on the condensation attachment insulators such as the steam in flue dust, acid, namely its surface insulation lost efficacy, form surface leakage, time serious, electric field send and does not power on, and insulator burns out and breaks or rupture by the heat of electric leakage, and in flue dust, some particle is attached to insulator surface and also can causes insulation breakdown.
Summary of the invention
The purpose of this utility model is to provide a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace, can reduce rapidly the temperature kiln gas, prevents deduster by high-temperature flue gas scaling loss.In addition, the electric-melting magnesium mineral hot furnace electric cleaner good dedusting effect used, insulator surface is pollution-free; make electric cleaner stable, effectively extend the service life of deduster, ensure the safe operation of dust pelletizing system; advantageously in the protection of environment, ensure carrying out smoothly of production.
For achieving the above object, the utility model realizes by the following technical solutions:
A kind of dust pelletizing system for electric-melting magnesium mineral hot furnace, comprise fume ducts, mechanical cooler, cold blast sliding valve, temperature sensor, electric-melting magnesium mineral hot furnace electric cleaner, centrifugal fan, blowdown stack, the flue gas input port of mechanical cooler receives the flue dust of coming out of the stove of electric-melting magnesium mineral hot furnace by fume ducts, the output of mechanical cooler is connected by the input of fume ducts with electric-melting magnesium mineral hot furnace electric cleaner, the output of electric-melting magnesium mineral hot furnace electric cleaner is connected with the input of centrifugal fan by fume ducts, the output of centrifugal fan is communicated with blowdown stack, fume ducts between mechanical cooler and electric-melting magnesium mineral hot furnace electric cleaner is provided with cold blast sliding valve and temperature sensor.
Described mechanical cooler comprises steel structure support, control of dust ash bucket, cooling body, plenum chamber, ventilator cowling mouth, axial flow blower, inspection platform, described steel structure support is fixed on ground, cooling body is arranged on the upper end of steel structure support, plenum chamber is arranged on the top of cooling body, control of dust ash bucket is arranged on the lower end of cooling body, in the side of cooling body, ventilator cowling mouth is installed, at the air port place of ventilator cowling mouth, axial flow blower is installed, inspection platform is installed in the side of cooling body simultaneously.
Described electric-melting magnesium mineral hot furnace electric cleaner uses EHT supply, air outlet on electric cleaner top, bottom connects exhaust fume collecting hood by blast pipe, electric cleaner top is provided with insulator chamber, insulator is provided with in insulator chamber, suspention corona wire in insulator, corona wire is longitudinally arranged in electric cleaner cylindrical shell, by point of contact horizontally set multilayer corona ring between the corona wire longitudinally arranged, cylinder inboard wall is provided with movable liner plate as dust collecting electrode, 1-3 layer corona ring sidewall near insulator is provided with wing plate, what wing plate evenly interlocked is fixed on corona ring both sides, described insulator chamber comprises insulator, airduct, jet pipe, airduct is arranged on above insulator, airduct communicates with spray cans, jet pipe is arranged on outside insulator, jet pipe is provided with spray orifice, spray orifice is corresponding with insulator outer wall.
Described jet pipe is fixed by the metal supporting rings being fixed on insulator chamber sidewall.
Compared with prior art, the beneficial effects of the utility model are:
For a dust pelletizing system for electric-melting magnesium mineral hot furnace, owing to have employed mechanical cooler, cold blast sliding valve and temperature sensor in the front end of deduster, the temperature kiln gas can be reduced rapidly, prevent deduster by high-temperature flue gas scaling loss.In addition, the electric cleaner used adopts and avoids the contaminated structure of insulator, makes flue gas not invade insulator chamber, ensures that insulator surface can not be polluted, on the corona ring of insulator, set up the absorption affinity that wing plate can increase fine dust simultaneously, improve the dust removing effects of electric precipitation.Effectively extend the service life of deduster, ensured the safe operation of dust pelletizing system, advantageously in the protection of environment, ensure carrying out smoothly of production.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace in the utility model;
Fig. 2 is the structural representation of mechanical cooler in the utility model;
Fig. 3 is the internal structure schematic diagram of electric-melting magnesium mineral hot furnace electric cleaner in the utility model;
Fig. 4 is the structural representation of electric-melting magnesium mineral hot furnace insulator chamber of electric precipitator in the utility model;
Fig. 5 is the structural representation of electric-melting magnesium mineral hot furnace electric precipitator corona ring in the utility model;
In figure: 1-fume ducts 2-mechanical cooler 3-cold blast sliding valve 4-temperature sensor 5-electric-melting magnesium mineral hot furnace electric cleaner 6-centrifugal fan 7-blowdown stack 8-mechanical cooler steel structure support 9-mechanical cooler control of dust ash bucket 10-cooling body 11-plenum chamber 12-ventilator cowling mouth 13-axial flow blower 14-inspection platform 15-insulator 16-insulator chamber 17-corona ring 18-corona wire 19-point of contact 20-liner plate 21-seesaw 22-jet pipe 23-metal supporting rings 24-airduct 25-air outlet 26-cooler flue gas input port
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following embodiment.
As Figure 1-Figure 5, a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace, comprise fume ducts 1, mechanical cooler 2, cold blast sliding valve 3, temperature sensor 4, electric-melting magnesium mineral hot furnace electric cleaner 5, centrifugal fan 6, blowdown stack 7, the flue gas input port 26 of mechanical cooler 2 receives the flue dust of coming out of the stove of electric-melting magnesium mineral hot furnace by fume ducts 1, the output of mechanical cooler 2 is connected by the input of fume ducts 1 with electric-melting magnesium mineral hot furnace electric cleaner 5, the output of electric-melting magnesium mineral hot furnace electric cleaner 5 is connected by the input of fume ducts 1 with centrifugal fan 6, the output of centrifugal fan 6 is communicated with blowdown stack 7, fume ducts 1 between mechanical cooler 2 and electric-melting magnesium mineral hot furnace electric cleaner 5 is provided with cold blast sliding valve 3 and temperature sensor 4.
Fume ducts 1 adopts the Q235B steel plate of thickness of slab 6mm to roll, and internal diameter of the pipeline chooses Φ 2000-2300mm according to the actual blow rate required of mineral hot furnace.
Cold blast sliding valve 3 is rotation butterfly valves of a kind of Φ 700 diameter, uses YE and cylinder to carry out opening and closing.
The preferred model of temperature sensor 4 is PT100 (0 ~ 300), is a kind of temperature-detecting device, can detects flue-gas temperature.Temperature sensor 4 is arranged in the fume ducts 1 of deduster 5 front end, when flue dust temperature is higher than critical point, sends electronic signal and conveys to YE, open cold air-valve 3, injects cool ambient air, reduces flue dust temperature.
Centrifugal fan 6 is Y-series high-temperature centrifugal fan, for flow of flue gas provides required negative pressure.
Blowdown stack 7 adopts the Q235B steel plate of thickness of slab 6-8mm to roll, and chimney central diameter chooses Φ 2200-2500mm, chimney height 12m.
As shown in Figure 2, mechanical cooler comprises steel structure support 8, control of dust ash bucket 9, cooling body 10, plenum chamber 11, ventilator cowling mouth 12, axial flow blower 13, inspection platform 14, described steel structure support 8 is fixed on ground, cooling body 10 is arranged on the upper end of steel structure support 8, plenum chamber 11 is arranged on the top of cooling body 10, control of dust ash bucket 9 is arranged on the lower end of cooling body 10, in the side of cooling body 10, ventilator cowling mouth 12 is installed, at the air port place of ventilator cowling mouth 12, axial flow blower 13 is installed, in the side of cooling body 10, inspection platform 14 is installed simultaneously.
Steel structure support 8 is stressed concentrated positions of mechanical cooler, uses H profile steel and channel-section steel to make.
Control of dust ash bucket 9 side of being made into cone-shaped, makes dust naturally drop to ash hole under gravity.The side of control of dust ash bucket 9 is provided with flue gas input port 26, connects fume ducts 1.
Cooling body 10 is main working parts of mechanical cooler 2, adopts the plate rolling tube of thickness 2mm to be made into the steel pipe of several diameter of phi 200, keeps certain spacing to arrange between tube and tube.
Plenum chamber 11 is the hollow box parts on mechanical cooler 2 top, is interconnected with the cooling body 10 of its underpart, and its top adopts oblique angle structure, in order to avoid ponding or accumulated snow are detained and increase overall weight.The output of plenum chamber 11 connects fume ducts 1.
Ventilator cowling mouth 12 is circumference transition structures that steel plate is made, and object is the axial flow blower 13 connecting air port place.
Axial flow blower 13 adopts multiple normal temperature axial flow blower to carry out air blast to cooling body nest of tubes, accelerates air passage rates, accelerate heat exchange rate.
Inspection platform 14 is at each height and position being provided with axial flow blower, and employing channel-section steel angle steel etc. are as support frame, and the platform that anti-skid design steel plate makes as paving, sidepiece is provided with cat ladder, and object is the convenient Problem to axial flow blower.
The mechanical cooler 2 adopted in the utility model, be come out of the stove flue gas cool-down cooling heat transmission equipment, have the advantages that floor space is little, cost is low, power consumption is low, go out kiln gas and first carry out quick heat exchange cooling through this equipment, effectively can prevent electric-melting magnesium mineral hot furnace electric cleaner high temperature scaling loss.
As shown in Figure 3-Figure 5, electric-melting magnesium mineral hot furnace electric cleaner 5 uses EHT supply, air outlet 25 on electric cleaner top, bottom connects exhaust fume collecting hood by blast pipe, electric cleaner top is provided with insulator chamber 16, insulator 15 is provided with in insulator chamber 16, suspention corona wire 18 in insulator 15, corona wire 18 is longitudinally arranged in electric cleaner cylindrical shell, by point of contact 19 horizontally set multilayer corona ring 17 between the corona wire 18 longitudinally arranged, cylinder inboard wall is provided with movable liner plate 20 as dust collecting electrode, 1-3 layer corona ring 17 sidewall near insulator 15 is provided with wing plate 21, what wing plate 21 evenly interlocked is fixed on corona ring 17 both sides.See Fig. 4, insulator chamber 16 comprises insulator 15, airduct 24, jet pipe 22, and airduct 24 is arranged on above insulator 15, and airduct 24 communicates with spray cans 22, and jet pipe 22 is arranged on outside insulator 15, and jet pipe 22 is provided with spray orifice, and spray orifice is corresponding with insulator outer wall.Jet pipe 22 is fixed by the metal supporting rings 23 being fixed on insulator chamber 16 sidewall.
Airduct 24 is on insulator 15 top, and jet pipe 22 stretches in metal supporting rings 23, and by insulator chamber 16 ground connection, the hot blast sprayed during air feed forms air curtain in insulator 15 lower surface, blocks flue dust and enters insulator chamber 16 by electric cleaner cylindrical shell.Jet pipe 22 diameter and jet amount decide according to the pressure of device interior flue dust.The spray orifice of jet pipe 22 directly can purge the surperficial flue dust of insulator 15, simultaneously, the hot blast that jet pipe 22 sprays forms air curtain at insulator 15 bottom margin, the angle of jet pipe 22 determines the position forming air curtain, general jet pipe 22 mouthfuls of diameters select 1 ~ 5mm, the pressure that jet amount presses process gas regulates, wind regime pressure 3000 ~ 3500Pa.
The electric-melting magnesium mineral hot furnace electric cleaner used in the utility model, adopt the direct current of more than 12kV to be transported to electric field, form powerful electrostatic field after energising, dust collection effect is good.Owing to adopting superpower electric field, in electric field, pole span is widened to 400mm, is applicable to electric capacity magnesium kiln smoke and dust treatment.Because flue dust is upwards discharged by bottom, the corona ring 17 thus on deduster top near insulator 15 arranges wing plate 21, to increase the absorption affinity of fine dust, strengthens the efficiency of dust collection of fine solid particle, makes dust removing effects better.Airduct 24 is set in insulator chamber 16, and purging insulator 15 surface by jet pipe 22, insulator 15 surface would not be polluted, and fundamentally can eliminate the situation appearance that insulator 15 destroys because of contaminated, the normal operation of influential system, can not destroy the balance of production system gas pressure.
Claims (4)
1. the dust pelletizing system for electric-melting magnesium mineral hot furnace, it is characterized in that, comprise fume ducts, mechanical cooler, cold blast sliding valve, temperature sensor, electric-melting magnesium mineral hot furnace electric cleaner, centrifugal fan, blowdown stack, the flue gas input port of mechanical cooler receives the flue dust of coming out of the stove of electric-melting magnesium mineral hot furnace by fume ducts, the output of mechanical cooler is connected by the input of fume ducts with electric-melting magnesium mineral hot furnace electric cleaner, the output of electric-melting magnesium mineral hot furnace electric cleaner is connected with the input of centrifugal fan by fume ducts, the output of centrifugal fan is communicated with blowdown stack, fume ducts between mechanical cooler and electric-melting magnesium mineral hot furnace electric cleaner is provided with cold blast sliding valve and temperature sensor.
2. a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace according to claim 1, it is characterized in that, described mechanical cooler comprises steel structure support, control of dust ash bucket, cooling body, plenum chamber, ventilator cowling mouth, axial flow blower, inspection platform, described steel structure support is fixed on ground, cooling body is arranged on the upper end of steel structure support, plenum chamber is arranged on the top of cooling body, control of dust ash bucket is arranged on the lower end of cooling body, in the side of cooling body, ventilator cowling mouth is installed, at the air port place of ventilator cowling mouth, axial flow blower is installed, inspection platform is installed in the side of cooling body simultaneously.
3. a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace according to claim 1, it is characterized in that, described electric-melting magnesium mineral hot furnace electric cleaner uses EHT supply, air outlet on electric cleaner top, bottom connects exhaust fume collecting hood by blast pipe, electric cleaner top is provided with insulator chamber, insulator is provided with in insulator chamber, suspention corona wire in insulator, corona wire is longitudinally arranged in electric cleaner cylindrical shell, by point of contact horizontally set multilayer corona ring between the corona wire longitudinally arranged, cylinder inboard wall is provided with movable liner plate as dust collecting electrode, 1-3 layer corona ring sidewall near insulator is provided with wing plate, what wing plate evenly interlocked is fixed on corona ring both sides, described insulator chamber comprises insulator, airduct, jet pipe, airduct is arranged on above insulator, airduct communicates with spray cans, jet pipe is arranged on outside insulator, jet pipe is provided with spray orifice, spray orifice is corresponding with insulator outer wall.
4. a kind of dust pelletizing system for electric-melting magnesium mineral hot furnace according to claim 3, it is characterized in that, described jet pipe is fixed by the metal supporting rings being fixed on insulator chamber sidewall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520815563.6U CN205156641U (en) | 2015-10-19 | 2015-10-19 | A dust pelletizing system that is used for hot stove in electric smelting magnesium ore deposit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520815563.6U CN205156641U (en) | 2015-10-19 | 2015-10-19 | A dust pelletizing system that is used for hot stove in electric smelting magnesium ore deposit |
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| CN205156641U true CN205156641U (en) | 2016-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495087A (en) * | 2020-04-24 | 2020-08-07 | 辽宁北方环境保护有限公司 | Electric furnace flue gas high-temperature dust removal process system |
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- 2015-10-19 CN CN201520815563.6U patent/CN205156641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495087A (en) * | 2020-04-24 | 2020-08-07 | 辽宁北方环境保护有限公司 | Electric furnace flue gas high-temperature dust removal process system |
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