CN1056161A - Smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof - Google Patents
Smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof Download PDFInfo
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- CN1056161A CN1056161A CN 91106700 CN91106700A CN1056161A CN 1056161 A CN1056161 A CN 1056161A CN 91106700 CN91106700 CN 91106700 CN 91106700 A CN91106700 A CN 91106700A CN 1056161 A CN1056161 A CN 1056161A
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- wet scrubber
- smoke pipe
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- flue gas
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Abstract
The present invention is melted the smoke abatement and dust control of aluminium stove and a kind of technical scheme that the poison gas purification proposes for Yan Shi.The main points of invention are that a smoking cover is installed on the fire door of molten aluminium stove, by pipeline flue gas is introduced wet scrubber, the jet-black absorption liquid that adopts preparation voluntarily makes flue dust, poison gas in the flue gas be able to sedimentation and neutralization under the effect of wet scrubber along the flue gas flow direction spray.After waste water is handled by purification tank for liquid waste, recycling, scum silica frost and mud can be turned waste into wealth.The effect of the flue gas ventilation blower after the dedusting is discharged by chimney.Method advanced person of the present invention, efficiency of dust collection reaches 100% up to 95% poison gas purifying rate.Have that equipment is simple, small investment, go up the advantage of detective.
Description
The present invention relates to the smoke and dust eliminating method and the equipment thereof of molten aluminium stove, the flue dust of the molten aluminium stove of particularly suitable Yan Shi is eliminated and waste gas purification.
In recent years, the molten aluminium stove of Yan Shi of the face invention first month of autumn was extensive use of at home, had brought into play the effect of its patented product.But because the molten aluminium stove of Yan Shi does not have supporting dedusting smoke elimination equipment, the black smoke and the toxic gas that cause this stove to emit in fusion process can't be eliminated.The reason that produces black smoke and toxic gas is to use producer to join in the raw material of smelting aluminium alloy usually 60%～70% aluminium scrap foundry goods, tailing, owing to adhere to a lot of greasy dirts above the waste material, graphite, and in fusion process, to add poisonous refining agent zinc chloride and remove slag, make the concentration of carbon black that fire door discharges and pernicious gas substantially exceed the discharge standard of national permission like this.According to test, the carbon black dust concentration is 2400mg/Nm in the soot emissions of this stove
3About, HCL concentration is 1.35mg/Nm
3About, Cl
2Concentration be 0.04mg/Nm
3About.Therefore, environment is polluted, human body is brought harm.Solving the molten smoke abatement and dust control problem of aluminium stove when smelting aluminium alloy of Yan Shi is the task of top priority.
The purpose of this invention is to provide a kind of smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof, with the smoke abatement and dust control that solves molten aluminium stove and the purifying problem of poison gas.
Technical scheme of the present invention is that a smoking cover is installed on the fire door of molten aluminium stove, offer charge door on the smoking cover with convenient reinforced, by smoke pipe flue gas is introduced wet scrubber again, in the smoke pipe between smoking cover and wet scrubber heat exchanger is set, to absorb the waste heat of flue gas, reduce exhaust gas temperature.Deduster uses the basic oil jet-black absorption liquid of new preparation and along the flue gas flow direction spray, makes flue dust, poison gas in the flue gas be able to sedimentation and neutralization under the effect of wet scrubber.Waste water behind the spray is handled back recirculation by wastewater disposal basin and is used.Dedusting and in and flue gas after being purified discharge from chimney by fan action by smoke pipe again, melt the flue gas that the aluminium fire grate releases and meet discharging standards with regard to making like this.
Below in conjunction with accompanying drawing the present invention is carried out detailed narration:
Accompanying drawing 1 is the process chart of molten aluminium stove smoke abatement and dust control;
Accompanying drawing 2 is equipment assembling schematic diagrames of molten aluminium stove smoke abatement and dust control.
Shown in 1,2, smoke elimination and dust removing method of aluminium smelting furnace of the present invention: 1. the smoking cover of corrosion-and high-temp-resistant is set on fire door above the molten aluminium stove, has charge door on the smoking cover, can make things convenient for the workman reinforced like this, minimizing radiant heat and dust fly upward with reference to the accompanying drawings; 2. smoking cover connects wet scrubber by smoke pipe, and a cover heat exchanger is installed in smoke pipe; Heat exchanger is connected with the hot and cold water tank, utilizes the waste heat of flue gas to add hot water.The running water of heating is introduced the bathroom and is used.Make full use of the waste heat of flue gas like this, saved the energy; 3. spray equipment is installed above wet scrubber, is adopted basic oil jet-black absorption liquid that flue gas is sprayed, its spray direction is consistent with flue gas flow direction.
4. connect neutralization precipitation oil interceptor and circulating water pool below wet scrubber, the flue dust water that sprays enters circulating water pool after by neutralization precipitation in the neutralization precipitation oil interceptor, and the effect by water pump recycles.
5. wet scrubber is connected with blower fan by smoke pipe, and blower fan is connected with chimney by smoke pipe.
Like this, the flue gas of being discharged by molten aluminium fire door is discharged by draught hood, smoke pipe, wet scrubber, blower fan to chimney.
The corollary equipment of smoke elimination and dust removing method of aluminium smelting furnace of the present invention, by smoking cover (1), smoke pipe (2), heat exchanger (3), cold, hot storage tank (4), wet scrubber (5), blower fan (6), chimney (7), water pump (8), neutralization precipitation oil interceptor (9), circulating water pool (10) constitutes, smoking cover (1) one end is connected with molten aluminium stove (12) top fire door, the other end is communicated with wet scrubber (5) by smoke pipe (2), heat exchanger (3) is installed in the smoke pipe (2), cold and hot storage tank (4) is connected with heat exchanger (3) by pipeline, neutralization precipitation oil interceptor (9) is established in wet scrubber (5) bottom, circulating water pool (10) is connected with precipitation oil interceptor (9), be provided with overfall (11) between two ponds, water pump (8) is located on the circulating water pool (10), blower fan (6) is connected with wet scrubber by smoke pipe (2), and chimney (7) is connected with blower fan (6) by smoke pipe (2).
The operation principle of smoke elimination and dust removing method of aluminium smelting furnace of the present invention and equipment thereof is such, after the flue gas that molten aluminium fire grate is emitted absorbs by smoking cover (1), its flue gas is by pipeline flow-direction wet scrubber (5), because basic oil jet-black absorption liquid is a kind of alkaline emulsifying activity agent, produce affinity interaction with surge group and oil smoke carbon black, make it become the emulsion state and have good washing.So the oil smoke carbon black is sprayed in the flue gas, oke exhaust blackness reduces.Because absorption liquid is alkaline, wherein the chlorine in hydroxide ion and the flue gas reacts, and generates hypochlorous acid and hydrochloric acid in the water soluble, and reaction equation is Cl
2+ NaOH=NaOCl+HCl.Hydrogen chloride gas and hydroxide ion in the flue gas react, and generate salt and water also in the water soluble, and reaction equation is HCl+NaOH=NaCl+H
2O is so the noxious material in the flue gas behind spray, is absorbed the hundred-percent absorption of liquid.The flue gas of discharging by chimney is a non-toxic gas.
Advantage of the present invention is:
1. efficiency of dust collection is up to more than 95%, and oke exhaust blackness is dropped to below the one-level by the Lin Geman Pyatyi, and hydrogen chloride (HCl), chlorine (Cl2) purifying rate reach 100%.
2. the waste heat that takes full advantage of flue gas adds hot tap-water, and the hot water in bathroom is provided, and is national energy savings, for the worker provides convenience.
3. can utilize the refuse in the molten aluminium process, the mud that can make printing ink, paint precipitation by the scum silica frost after wet scrubber, the dedusting can participate in the coal and burn, and can turn waste into wealth.
4. equipment is simple, and floor space is little, small investment, last detective.
Embodiment:
Purchase on the Equipment Market of the present invention, pressing Fig. 2 installs, its wet scrubber adopts SCX-III type, and the patent No. is 88212313,0 patented product, with basic oil jet-black absorption liquid spray, 0.3 ton of the molten aluminium stove smelting aluminium alloy of Yan Shi, wherein waste material accounts for 60～70%, and smelting time is 1 hour, every stove of toxic emission time 30～40 minutes, before not using method and apparatus of the present invention, the carbon black dust concentration of discharge is 2487.46mg/Nm3Hydrochloric acid (HCl) concentration is 1.35mg/Nm3, chlorine (Cl2) concentration is 0.04mg/Nm3, behind employing the present invention, the carbon black dust concentration drops to 2.6mg/Nm3, no poison gas is discharged.
Claims (2)
1, smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof, it is characterized in that method is being provided with smoking cover on the fire door above the molten aluminium stove, smoking cover connects wet scrubber by smoke pipe, one cover heat exchanger is installed in smoke pipe, heat exchanger is connected with hot and cold water tank, spray equipment is installed above wet scrubber, adopt basic oil jet-black absorption liquid along the flue gas flow direction spray, below wet scrubber, connect neutralization precipitation oil interceptor and circulating water pool, settle water pump on the circulating water pool, wet scrubber is connected with blower fan by smoke pipe, and blower fan is connected with chimney by smoke pipe.
2, smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof, it is characterized in that equipment is by smoking cover (1), smoke pipe (2), heat exchanger (3), cold, hot storage tank (4), wet scrubber (5), blower fan (6), chimney (7), water pump (8), neutralization precipitation oil interceptor (9), circulating water pool (10) constitutes, smoking cover (1) one end is connected with molten aluminium stove (12) top fire door, the other end is communicated with wet scrubber (5) by smoke pipe (2), heat exchanger (3) is installed in the smoke pipe (2), cold, hot storage tank (4) is connected with heat exchanger (3) by pipeline, neutralization precipitation oil interceptor (9) is established in the wet scrubber bottom, circulating water pool (10) is connected with precipitation oil interceptor (9), be provided with overfall (11) between two ponds, water pump (8) is located on the circulating water pool (10), blower fan (6) is connected with wet scrubber (5) by smoke pipe (2), and chimney (7) is connected with blower fan (6) by smoke pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106700 CN1056161A (en) | 1991-05-15 | 1991-05-15 | Smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106700 CN1056161A (en) | 1991-05-15 | 1991-05-15 | Smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1056161A true CN1056161A (en) | 1991-11-13 |
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ID=4908084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106700 Pending CN1056161A (en) | 1991-05-15 | 1991-05-15 | Smoke elimination and dust removing method of aluminium smelting furnace and equipment thereof |
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| CN (1) | CN1056161A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0810022A1 (en) * | 1996-05-25 | 1997-12-03 | VAW Aluminium AG | Apparatus and process for cleaning waste gas containing aluminium dust |
| CN101196373B (en) * | 2007-01-25 | 2010-04-14 | 宁波金田铜业(集团)股份有限公司 | Environment friendly system for smelting copper and copper alloy |
| CN101876511A (en) * | 2009-04-30 | 2010-11-03 | 朱田龙 | Dust collecting and gas purifying device |
| CN101886882A (en) * | 2010-06-13 | 2010-11-17 | 中国铝业股份有限公司 | Smoke processing method for alumina roasting furnace |
| CN102179151A (en) * | 2011-03-31 | 2011-09-14 | 四川鑫星铝业有限责任公司 | Alkali liquor wet purification technology for aluminum melting furnace smoke |
| CN102284241A (en) * | 2011-08-20 | 2011-12-21 | 江阴利鑫环保科技有限公司 | Waste hydrogen sulfide gas collecting and purifying device |
| CN102284240A (en) * | 2011-08-20 | 2011-12-21 | 江阴利鑫环保科技有限公司 | Treatment method for collecting and purifying hydrogen sulfide waste gas |
| CN102384482A (en) * | 2011-11-23 | 2012-03-21 | 金艺 | Atmospheric heating furnace emitting no flue gas |
| CN103604302A (en) * | 2013-11-19 | 2014-02-26 | 界首市金辉金属制品有限公司 | Method for disposing fume and dust of aluminum metallurgy furnace |
| CN105588450A (en) * | 2015-12-23 | 2016-05-18 | 上海翰忠环保有限公司 | Wet electric precipitation technique for comprehensive treatment of smoke of smelting furnace and heat preserving furnace for aluminum |
-
1991
- 1991-05-15 CN CN 91106700 patent/CN1056161A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0810022A1 (en) * | 1996-05-25 | 1997-12-03 | VAW Aluminium AG | Apparatus and process for cleaning waste gas containing aluminium dust |
| CN101196373B (en) * | 2007-01-25 | 2010-04-14 | 宁波金田铜业(集团)股份有限公司 | Environment friendly system for smelting copper and copper alloy |
| CN101876511A (en) * | 2009-04-30 | 2010-11-03 | 朱田龙 | Dust collecting and gas purifying device |
| CN101886882A (en) * | 2010-06-13 | 2010-11-17 | 中国铝业股份有限公司 | Smoke processing method for alumina roasting furnace |
| CN102179151A (en) * | 2011-03-31 | 2011-09-14 | 四川鑫星铝业有限责任公司 | Alkali liquor wet purification technology for aluminum melting furnace smoke |
| CN102284241A (en) * | 2011-08-20 | 2011-12-21 | 江阴利鑫环保科技有限公司 | Waste hydrogen sulfide gas collecting and purifying device |
| CN102284240A (en) * | 2011-08-20 | 2011-12-21 | 江阴利鑫环保科技有限公司 | Treatment method for collecting and purifying hydrogen sulfide waste gas |
| CN102384482A (en) * | 2011-11-23 | 2012-03-21 | 金艺 | Atmospheric heating furnace emitting no flue gas |
| CN103604302A (en) * | 2013-11-19 | 2014-02-26 | 界首市金辉金属制品有限公司 | Method for disposing fume and dust of aluminum metallurgy furnace |
| CN105588450A (en) * | 2015-12-23 | 2016-05-18 | 上海翰忠环保有限公司 | Wet electric precipitation technique for comprehensive treatment of smoke of smelting furnace and heat preserving furnace for aluminum |
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