CN210638537U - Energy-saving and emission-reducing device of electric melting furnace - Google Patents
Energy-saving and emission-reducing device of electric melting furnace Download PDFInfo
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- CN210638537U CN210638537U CN201921587517.XU CN201921587517U CN210638537U CN 210638537 U CN210638537 U CN 210638537U CN 201921587517 U CN201921587517 U CN 201921587517U CN 210638537 U CN210638537 U CN 210638537U
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Abstract
The utility model relates to a flue gas processing technology field, concretely relates to electric melting furnace energy saving and emission reduction device. The utility model provides an energy-saving and emission-reducing device of an electric melting furnace, which comprises an electric melting furnace 1; a waste heat recoverer 4 communicated with the air outlet of the electric melting furnace 1; the bag type dust collector 7 is communicated with the air outlet of the waste heat recoverer 4; and the wet dust collector 15 is communicated with the air outlet of the bag type dust collector 7. In the utility model, the high-temperature flue gas generated in the electric melting furnace 1 passes through the waste heat recoverer 4 to recover and recycle the heat in the flue gas; the primary dust removal is carried out by the bag type dust collector 7, and then the comprehensive dust removal is carried out by the wet dust collector 15, so that the flue gas meeting the national emission standard is obtained. According to the data of the embodiment, the utility model providesThe concentration of particulate matters in the flue gas discharged by the energy-saving and emission-reducing device of the electric melting furnace is less than 10mg/m3The ultra-low emission standard is achieved, and the energy is saved and the environment is protected.
Description
Technical Field
The utility model relates to a flue gas processing technology field, concretely relates to electric melting furnace energy saving and emission reduction device.
Background
In the electric melting refractory material industry, the batch materials are mainly alumina, zircon sand, zirconia and other powder materials or granular materials, no harmful gas is discharged after melting, but high-temperature smoke is generated in the production process of an electric melting furnace, the main component of the smoke is dust, and the discharge standard of industrial particulate matters is 80mg/m from the past3Increased to 30mg/m3The traditional dust removal mode can not meet the requirements of national standards.
The dust removal mode of the traditional refractory material electric melting furnace adopts a single bag type dust remover to remove dust, the main problem of the mode is that the dust removal efficiency is not high, and the concentration of particles is 70-80 mg/m after the dust removal of the bag type dust remover3In addition, the traditional bag type dust collector adopts a vibration mode to vibrate the dust adsorbed on the dust collection bag, so that larger smoke dust can be formed in the dust collector, and the smoke outlet of the dust collector is not provided with a sealing device, so that the vibration smoke dust can be directly discharged, and the concentration of discharged particulate matters is greatly increased; in addition, because the production temperature of the electric melting refractory material is generally more than 1800 ℃, the flue gas temperature is higher, if high-temperature flue gas enters the bag type dust collector without being well cooled, the dust removal bag can be rapidly damaged, and the dust removal bag can consume great economic cost and time cost when being frequently replaced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric melting furnace energy saving and emission reduction device, the utility model provides an electric melting furnace energy saving and emission reduction device collects waste heat recovery and is dry wet process dust removal integrative, can reach effectively remove dust, can realize again having better economy and environmental protection benefit to thermal recovery recycle in the flue gas.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
the utility model provides an electric melting furnace energy saving and emission reduction device, include
An electric melter 1;
a waste heat recoverer 4 communicated with the air outlet of the electric melting furnace 1;
the bag type dust collector 7 is communicated with the air outlet of the waste heat recoverer 4;
and the wet dust collector 15 is communicated with the air outlet of the bag type dust collector 7.
Preferably, the energy-saving and emission-reducing device of the electric melting furnace further comprises a dust hood 2, and the dust hood 2 is arranged at the top of the electric melting furnace 1.
Preferably, the energy-saving and emission-reducing device of the electric melting furnace further comprises a heating device 5, and the heating device 5 is communicated with the waste heat recoverer 4.
Preferably, the bag house 7 comprises a dust chamber 8, a rapping device 9 and a flue closing device 10; the dust removal chamber 8 is arranged below the rapping device 9; the flue closing device 10 is arranged at one side of the rapping device 9.
Preferably, dust removing bags are distributed in the dust removing chamber 8.
Preferably, the bag collector 7 further comprises a first dust collecting device 11 and a first receiver 12, the first dust collecting device 11 is disposed below the dust collecting chamber 8, and the first receiver 12 is disposed below the first dust collecting device 11.
Preferably, the wet dust separator 15 comprises a cyclone chamber 16 and a second dust collecting device 19, the second dust collecting device 19 being arranged below the cyclone chamber 16.
Preferably, the swirl chamber 16 comprises spraying means and filtering means;
the spraying devices comprise a first spraying device 17-1, a second spraying device 17-2 and a third spraying device 17-3;
the filtering devices comprise a first filtering device 18-1, a second filtering device 18-2, a third filtering device 18-3, a fourth filtering device 18-4 and a fifth filtering device 18-5;
the first filtering device 18-1 is arranged below the first spraying device 17-1; the second filtering device 18-2 and the third filtering device 18-3 are arranged below the second spraying device 17-2; the fourth filtering device 18-4 and the fifth filtering device 18-5 are arranged below the third spraying device 17-3.
Preferably, the wet dust collector 15 further comprises a second material receiver 20, and the second material receiver 20 is disposed below the second dust collecting device 19.
Preferably, the energy-saving and emission-reducing device of the electric melting furnace further comprises a chimney 21, and the chimney 21 is communicated with the air outlet of the wet dust collector 15.
The utility model provides an energy-saving and emission-reducing device of an electric melting furnace, which comprises an electric melting furnace 1; a waste heat recoverer 4 communicated with the air outlet of the electric melting furnace 1; the bag type dust collector 7 is communicated with the air outlet of the waste heat recoverer 4; and the wet dust collector 15 is communicated with the air outlet of the bag type dust collector 7. In the utility model, the high-temperature flue gas generated in the electric melting furnace 1 passes through the waste heat recoverer 4 to recover and recycle the heat in the flue gas; the primary dust removal is carried out by the bag type dust collector 7, and then the comprehensive dust removal is carried out by the wet dust collector 15, so that the flue gas meeting the national emission standard is obtained. According to the data of the embodiment, the utility model provides an electric melting furnace energy saving and emission reduction device discharges in the flue gas particulate matter concentration is less than 10mg/m3The ultra-low emission standard is achieved, and the energy is saved and the environment is protected.
Drawings
FIG. 1 is a schematic view of an energy-saving and emission-reducing device of an electric melting furnace of the utility model; wherein, 1-an electric melting furnace, 2-a dust collecting hood, 3-a first flue, 4-a waste heat recoverer, 5-a heating device, 6-a second flue, 7-a bag type dust remover, 8-a dust removing chamber, 9-a rapping device, 10-a flue sealing device, 11-a first dust collecting device, 12-a first material receiver, 13-an induced draft fan, 14-a third flue, 15-a wet dust remover, 16-a whirling chamber, 17-1 a first spray device, 17-2-a second spray device, 17-3-a third spray device, 18-1-a first filter screen, 18-2-a second filter screen, 18-3-a third filter screen, 18-4-a fourth filter screen and 18-5-a fifth filter screen, 19-a second dust collecting device, 20-a second material receiver and 21-a chimney.
Detailed Description
The utility model provides an electric melting furnace energy saving and emission reduction device, include
An electric melter 1;
a waste heat recoverer 4 communicated with the air outlet of the electric melting furnace 1;
the bag type dust collector 7 is communicated with the air outlet of the waste heat recoverer 4;
and the wet dust collector 15 is communicated with the air outlet of the bag type dust collector 7.
The utility model provides an electric melting furnace energy saving and emission reduction device includes electric melting furnace 1, the utility model discloses it is right electric melting furnace 1 does not have special injecing, adopt the electric melting furnace that technical personnel in the field are familiar with can, as the utility model discloses an embodiment, electric melting furnace 1 is three-phase electric arc furnace. In the present invention, the temperature of the high temperature flue gas discharged from the electric melting furnace 1 is preferably 800 ℃ or higher, and more preferably 1400 ℃ or higher.
As an embodiment of the utility model, the utility model provides an electric melting furnace energy saving and emission reduction device still includes dust cage 2, dust cage 2 set up in the top of electric melting furnace 1 is regarded as the utility model discloses an embodiment, introduces first flue 3 through the high temperature flue gas that dust cage 2 produced electric melting furnace 1, and the high temperature flue gas gets into waste heat recoverer 4 through first flue 3.
The utility model provides an electric melting furnace energy saving and emission reduction device include with waste heat recoverer 4 of the gas outlet intercommunication of electric melting furnace 1. The utility model discloses in, waste heat recoverer 4 is arranged in retrieving the heat in the 1 exhaust high temperature flue gas of electric melting furnace, obtains the flue gas after the cooling, the utility model discloses recycle heat recovery, it is more energy-conserving.
As an embodiment of the utility model, the electric melting furnace energy saving and emission reduction device still includes heating system 5, heating system 5 with waste heat recoverer 4 is linked together. As an embodiment of the utility model, the circulating water heats in waste heat recoverer 4, then circulates at heating system 5 for the heating in workshop, both practiced thrift the energy and can prevent that high temperature flue gas from getting into damage the dust pocket in bag collector 7.
The utility model provides an electric melting furnace energy saving and emission reduction device include with bag collector 7 of the gas outlet intercommunication of waste heat recoverer 4 the utility model discloses in, bag collector 7 is used for tentatively removing dust to the flue gas after the cooling, obtains the tentatively purified flue gas. As an embodiment of the present invention, the flue gas after the temperature reduction discharged from the waste heat recovery device 4 enters the bag-type dust collector 7 through the second flue 6.
As an embodiment of the present invention, the bag collector 7 comprises a dust collecting chamber 8, a rapping device 9 and a flue closing device 10; the dust removal chamber 8 is arranged below the rapping device 9; the flue closing device 10 is arranged at one side of the rapping device 9. As an embodiment of the invention, the bag house 7 has one or more dust collecting chambers 8. As an embodiment of the present invention, the dust removing bags are distributed in the dust removing chamber 8, the present invention is right when the specific number of the dust removing bags is not required to meet the requirement of every dust removing chamber 8.
As an embodiment of the utility model, the rapping device 9 performs periodic rapping for a fixed time, and the specific rapping period is once every 20-30 min. The utility model discloses a rapping device 9 shakes the adsorbed dust on the dust bag and falls, guarantees the dust removal effect of dust bag, and the dust that shakes and falls carries out recycle.
As an embodiment of the present invention, the flue closing means 10 is provided at the air outlet of the bag collector 7. As an embodiment of the utility model, when the rapping device 9 is operated, the flue gas outlet of the bag type dust collector 7 is closed by the flue sealing device 10, so that the vibrated-down smoke is prevented from being discharged, and the discharged particles are reduced.
As an embodiment of the present invention, the bag collector 7 further comprises a first dust collecting device 11, wherein the first dust collecting device 11 is disposed below the dust collecting chamber 8. The utility model discloses utilize first dust collection device 11 to collect the dust that shakes and falls.
As an embodiment of the present invention, the bag collector 7 further comprises a first material receiver 12, the first material receiver 12 is disposed below the first dust collecting device 11 for receiving the dust collected by the first dust collecting device 11, and the collected dust can be recycled.
The utility model provides an electric melting furnace energy saving and emission reduction device include with wet dust collector 15 of the gas outlet intercommunication of bag collector 7. The utility model discloses in, wet dust collector 15 removes dust comprehensively to bag collector 7 exhaust preliminary purification flue gas, obtains the flue gas after handling. As an embodiment of the utility model, will through draught fan 13 preliminary purification flue gas is introduced in wet dust collector 15 through third flue 14.
As an embodiment of the present invention, the wet dust collector 15 includes a whirling chamber 16, and the whirling chamber 16 includes a spraying device and a filtering device; the utility model discloses a cavity 16 that circles round increases the dwell time of flue gas in wet dust collector 15, improves dust removal effect.
As an embodiment of the present invention, the spraying devices include a first spraying device 17-1, a second spraying device 17-2, and a third spraying device 17-3; the first spraying device 17-1 is arranged at the air inlet of the wet dust collector 15. The utility model discloses a spray set adsorbs the smoke and dust, reduces the particulate matter content in the flue gas. As an embodiment of the present invention, the spraying device adsorbs the smoke dust in a spraying manner.
As an embodiment of the present invention, the filtering means includes a first filtering means 18-1, a second filtering means 18-2, a third filtering means 18-3, a fourth filtering means 18-4 and a fifth filtering means 18-5. The utility model discloses a filter equipment filters remaining dust.
As an embodiment of the present invention, the first filtering device 18-1 is disposed below the first spraying device 17-1; the second filtering device 18-2 and the third filtering device 18-3 are arranged below the second spraying device 17-2; the fourth filtering device 18-4 and the fifth filtering device 18-5 are arranged below the third spraying device 17-3.
As an embodiment of the present invention, the second filtering device 18-2 is disposed below the third filtering device 18-3; the fourth filtering device 18-4 is arranged above the fifth filtering device 18-5.
As an embodiment of the present invention, the preliminarily purified flue gas discharged from the bag filter 7 is sequentially filtered by the first filtering device 18-1, the second filtering device 18-2, the third filtering device 18-3, the fourth filtering device 18-4 and the fifth filtering device 18-5 to remove the smoke and dust in the preliminarily purified flue gas, so as to obtain the treated flue gas.
As an embodiment of the present invention, the wet dust collector 15 further includes a second dust collecting device 19, and the second dust collecting device 19 is disposed below the convolution chamber 16. The utility model discloses utilize second dust collection device 19 to collect the dust on the filter equipment.
As an embodiment of the present invention, the wet dust collector 15 further includes a second material receiver 20, the second material receiver 20 is disposed below the second dust collecting device 19 for receiving the dust collected by the second dust collecting device 19, and the collected dust can be recycled.
As an embodiment of the utility model, the electric melting furnace energy saving and emission reduction device still includes chimney 21, chimney 21 with wet dust collector 15's gas outlet intercommunication. The treated flue gas discharged from the wet dust collector 15 is discharged from a chimney 21, and the concentration of particulate matters in the treated flue gas is less than 10mg/m3And the ultra-low emission standard is achieved.
As shown in fig. 1, the utility model provides an energy-saving and emission-reducing device for an electric melting furnace, which introduces high-temperature flue gas exhausted from the electric melting furnace 1 into a first flue 3 through a dust hood 2, and the high-temperature flue gas enters a waste heat recoverer 4 to recover heat in the high-temperature flue gas, so as to obtain cooled flue gas, and the heat recovered by the waste heat recoverer 4 is used for heating circulating water in a heating device 5 for heating a workshop;
the flue gas after cooling enters the bag type dust collector 7 through the second flue 6 to be primarily dedusted, and primarily purified flue gas is obtained: the dust in the cooled flue gas is adsorbed by dust-removing bags distributed in a dust-removing chamber 8, the dust adsorbed on the dust-removing bags is vibrated down by a vibrating device 9, a flue gas outlet is closed by a flue closing device during vibration to prevent the vibration-down dust from being discharged, and the vibrated-down dust enters a first dust collecting device 11 and is put into a first material receiver 12 for recycling;
introduce the preliminary purification flue gas into third flue 14 through draught fan 13, get into wet dust collector 15, deposit through spraying, filtration and gravity and carry out comprehensive dust removal to preliminary purification flue gas, obtain the flue gas after handling: the primarily purified flue gas enters a cyclone chamber 16, the retention time of the flue gas is increased, the flue gas is firstly adsorbed by a first spraying device 17-1, filtered by a first filtering device 18-1, then further filtered by a second filtering device 18-2, a third filtering device 18-3, a fourth filtering device 18-4 and a fifth filtering device 18-5 in sequence, and meanwhile, the dust in the flue gas is removed by utilizing the second spraying device 17-2 above the second filtering device 18-2 and the third filtering device 18-3, the fourth filtering device 18-4 and the third spraying device 17-3 above the fifth filtering device 18-5, so that the dust removal effect is improved; the dust on the filtering device enters a second dust device 19 and is put into a second material receiver 20 for recycling;
the treated flue gas is discharged through a chimney 21, and the concentration of particulate matters in the treated flue gas is less than 10mg/m3And the ultra-low emission standard is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An energy-saving and emission-reducing device of an electric melting furnace is characterized by comprising
An electric melter (1);
a waste heat recoverer (4) communicated with the air outlet of the electric melting furnace (1);
the bag type dust collector (7) is communicated with the air outlet of the waste heat recoverer (4);
and the wet dust collector (15) is communicated with the air outlet of the bag type dust collector (7).
2. The energy-saving and emission-reducing device for the electric melting furnace as claimed in claim 1, further comprising a dust hood (2), wherein the dust hood (2) is arranged at the top of the electric melting furnace (1).
3. The electric melting furnace energy-saving and emission-reducing device according to claim 1, further comprising a heating device (5), wherein the heating device (5) is communicated with the waste heat recoverer (4).
4. The electric melting furnace energy-saving and emission-reducing device according to claim 1, wherein the bag-type dust collector (7) comprises a dust-collecting chamber (8), a rapping device (9) and a flue-closing device (10); the dust removal chamber (8) is arranged below the rapping device (9); the flue closing device (10) is arranged on one side of the rapping device (9).
5. The energy-saving and emission-reducing device for the electric melting furnace according to claim 4, wherein dust removing bags are distributed in the dust removing chamber (8).
6. An electric melter energy saving and emission reducing apparatus as defined in claim 4 or 5, wherein the bag collector (7) further comprises a first dust collecting device (11) and a first receiver (12), the first dust collecting device (11) being disposed below the dust collecting chamber (8), the first receiver (12) being disposed below the first dust collecting device (11).
7. An electric melter energy saving and emission reducing apparatus as defined in claim 1, wherein said wet scrubber (15) comprises a cyclone chamber (16) and a second dust collecting device (19), said second dust collecting device (19) being disposed below said cyclone chamber (16).
8. The electric melting furnace energy saving and emission reduction device according to claim 7, wherein the swirl chamber (16) comprises a spraying device and a filtering device;
the spraying device comprises a first spraying device (17-1), a second spraying device (17-2) and a third spraying device (17-3);
the filtering device comprises a first filtering device (18-1), a second filtering device (18-2), a third filtering device (18-3), a fourth filtering device (18-4) and a fifth filtering device (18-5);
the first filtering device (18-1) is arranged below the first spraying device (17-1); the second filtering device (18-2) and the third filtering device (18-3) are arranged below the second spraying device (17-2); the fourth filtering device (18-4) and the fifth filtering device (18-5) are arranged below the third spraying device (17-3).
9. An electric melter energy saving and emission reducing apparatus as defined in claim 7, wherein said wet scrubber (15) further comprises a second receiver (20), said second receiver (20) being disposed below said second dust collecting device (19).
10. The energy-saving and emission-reducing device for the electric melting furnace as claimed in claim 1, further comprising a chimney (21), wherein the chimney (21) is communicated with the air outlet of the wet dust collector (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587517.XU CN210638537U (en) | 2019-09-23 | 2019-09-23 | Energy-saving and emission-reducing device of electric melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587517.XU CN210638537U (en) | 2019-09-23 | 2019-09-23 | Energy-saving and emission-reducing device of electric melting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN210638537U true CN210638537U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921587517.XU Active CN210638537U (en) | 2019-09-23 | 2019-09-23 | Energy-saving and emission-reducing device of electric melting furnace |
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| CN (1) | CN210638537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385687A (en) * | 2022-08-16 | 2022-11-25 | 洛阳鸿科环境治理有限公司 | Regeneration method of zirconia waste and production equipment thereof |
-
2019
- 2019-09-23 CN CN201921587517.XU patent/CN210638537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385687A (en) * | 2022-08-16 | 2022-11-25 | 洛阳鸿科环境治理有限公司 | Regeneration method of zirconia waste and production equipment thereof |
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