CN1958866A - Air feeding technique and equipment for transporting alumina in fume cleaning of aluminum cell - Google Patents
Air feeding technique and equipment for transporting alumina in fume cleaning of aluminum cell Download PDFInfo
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- CN1958866A CN1958866A CN 200610047984 CN200610047984A CN1958866A CN 1958866 A CN1958866 A CN 1958866A CN 200610047984 CN200610047984 CN 200610047984 CN 200610047984 A CN200610047984 A CN 200610047984A CN 1958866 A CN1958866 A CN 1958866A
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Abstract
This invention relates to a system for purifying flue gas from Al electrolytic bath. The system comprises a reactor, air-driven smooth grooves, a dedesuter, wind-supply pipelines, an air blower, a flue gas exit pipeline and a main flue gas exit blower. The air entrance of the air blower is connected with the flue gas exit pipeline. Since the system inhales purified hot flue gas, it can save power needed for operating the flue gas purification system. Meanwhile, the pumping of hot flue gas can solve the problem of lift performance decrease (due to scaling in the main pipeline of air lift) caused by pumping of cold flue gas.
Description
Technical field
The present invention relates to a kind of fume cleaning of aluminum cell system, particularly relate to a kind of aluminum oxide air feeding technique and device that is applicable to electrolytic aluminium factory electrolyzer dry fume purifying system.
Background technology
Since the last century the eighties, the dry cleaning technology begins to be applied to each electrolytic aluminium factory, is used to handle the electrolyzer flue gas.As shown in Figure 1, the aluminum oxide air-supply is adopted centrifugal high pressure fan or Root's blower to suck air always and is blasted system in the existing purification system, the penumatic elevator air-supply used of air-driven chute, reactor, sack cleaner and the aluminum oxide vertical transport of using for the aluminum oxide horizontal feed through air supply line again.
Adopt above-mentioned traditional method to existing twenties years of aluminum oxide air-supply,, find in operational process, to exist following technical problem by production run these years:
1, inhaled air has increased the total blast volume that whole purification system is handled, and has increased the operating load of system.Because system sucks the air feed that air is carried as aluminum oxide, and the air that these blast finally enters purification system, enter atmosphere by the main smoke discharging blower fan of purification system.When the design selection of the main smoke discharging blower fan of purification system, not only to satisfy the flue gas that electrolyzer is distributed and discharge like this, also should consider this part gas is discharged.The processing air quantity of main smoke discharging blower fan will increase like this, has increased the operation power consumption of main smoke discharging blower fan.With an electrolytic aluminium factory of producing 200000 tons per year is example, and the total blast volume that blasts is about 70000m
3/ h, operation energy consumption increase 80Kw approximately, and annual running cost increases by 200,000 yuan approximately.
2, inhaled air contacts with thermooxidizing aluminium, causes aluminum oxide fouling when vertical-lift to locate in penumatic elevator master converying feeding tube etc. easily, causes the penumatic elevator cisco unity malfunction.Along with the continuous development and the raising of aluminum electrolyzation technology, the capacity of aluminium cell constantly increases, and at present, adopts the electrolyzer of 300KA and 350KA Faradaic current to become main production grooved.And the funnel temperature of large vol electrolyzer is higher, make the temperature of the fluorinated alumina that utilizes the penumatic elevator lifting reach 100-130 ℃, and the existing general temperature of suction air that adopts is less than 40 ℃, freezing air blasts and causes aluminum oxide fouling in transport pipe in the thermooxidizing aluminium like this, have a strong impact on the load-carrying capacity of penumatic elevator, cause purification system normally not move.Can only move by Break-Up System, fouling is beaten, increased the operation factor of working strength of workers and reduction purification system with labor cleaning's way.
Summary of the invention
Technical problem to be solved by this invention provides and a kind ofly reduces system energy consumption, solves in the fume cleaning of aluminum cell of aluminum oxide scale problems in transport pipe aluminum oxide and carry air feeding technique and device.
In order to solve the problems of the technologies described above, the present invention is achieved in that aluminum oxide is carried air feeding technique in the fume cleaning of aluminum cell, gas blower sucks and purifies the reacted hot flue gas of part in the smoke discharging pipe of back, this hot flue gas is reactor, each air-driven chute, fly-ash separator, penumatic elevator air feed through air supply line, and its waste heat flue gas that purifies in the smoke discharging pipe of back is discharged through main smoke ejector blower fan.
Aluminum oxide is carried supply air system in the fume cleaning of aluminum cell, it is included as the air supply line and the gas blower of reactor, each air-driven chute, fly-ash separator, penumatic elevator air feed, and will react smoke discharging pipe and main smoke ejector blower fan after the purification that the after heat flue gas discharges, wherein smoke discharging pipe is connected the air inlet end of gas blower with purifying afterwards by pipeline.
The air inlet end of described gas blower is connected with the outlet that purifies the back smoke discharging pipe by pipeline.
Described gas blower is two, and wherein for the gas blower of penumatic elevator air feed is a Root's blower, the air inlet end of Root's blower is connected with the outlet that purifies the back smoke discharging pipe by a pipeline; An other gas blower for reactor, fly-ash separator and the air-supply of each air-driven chute is high pressure centrifugal blower or Root's blower, and its air inlet end is connected with the outlet that purifies the back smoke discharging pipe by a pipeline.
Advantage of the present invention and effect are as follows:
The wind regime that the present invention adopts the hot flue gas in the sack cleaner outlet conduit to blow as air-driven chute, fly-ash separator, the reactor of carrying usefulness to aluminum oxide.With the wind regime of the hot flue gas in the sack cleaner outlet conduit as the penumatic elevator air-supply of using for the aluminum oxide vertical transport.It has reduced the processing air quantity of main smoke discharging blower fan, has reduced the operation power consumption of main smoke discharging blower fan.The wind regime of blowing for system's each several part is hot flue gas, and warm air blasts and just can not cause fouling in the transport pipe in the thermooxidizing aluminium like this, makes system's energy works better, has reduced working strength of workers, has improved the operation factor of purification system.
Description of drawings
Fig. 1 is existing electrolyzer technological process for flue gas purification figure.
Fig. 2 is electrolyzer technological process for flue gas purification figure of the present invention.
Embodiment
In the fume cleaning of aluminum cell system, need in flue gas, add a large amount of aluminum oxide and adsorb pollutents such as hydrogen fluoride gas in the flue gas as sorbent material.This purification techniques is the dry cleaning technology.The lifting of the conveying of aluminum oxide horizontal direction in purification system and vertical direction just needs with the air feed of high pressure gas as aluminum oxide fluidization and aluminum oxide vertical-lift so.The present invention utilizes Root's blower to suck through the hot flue gas after the flue gas purification system processing, as the technology of aluminum oxide fluidization air-supply and the air-supply of aluminum oxide vertical transport.
Fig. 2 is a fume cleaning of aluminum cell process flow sheet of the present invention, as shown in Figure 2, the aluminum oxide air feeding technique comprises following processing step in the fume cleaning of aluminum cell of the present invention: high pressure centrifugal blower or Root's blower suck the hot flue gas after the sack cleaner outlet purifies the interior partial reaction of back smoke discharging pipe, this hot flue gas is reactor, each air-driven chute, sack cleaner, penumatic elevator air feed through air supply line, and its waste heat flue gas after purifying in the smoke discharging pipe is discharged in the chimney through main smoke ejector blower fan discharges.
Aluminum oxide is carried supply air system in the fume cleaning of aluminum cell, it is included as the air supply line and the gas blower of reactor, each air-driven chute, sack cleaner, penumatic elevator air feed, and will react smoke discharging pipe and main smoke ejector blower fan after the purification that the after heat flue gas discharges, wherein the air inlet end of gas blower by the purification of pipeline and fly-ash separator outlet after smoke discharging pipe export and be connected.Gas blower wherein is two, and wherein for the gas blower of penumatic elevator air feed is a Root's blower, the air inlet end of Root's blower is connected with the outlet that purifies the back smoke discharging pipe by a pipeline; Other one is that the gas blower of blowing for reactor, fly-ash separator and each air-driven chute is high pressure centrifugal blower or Root's blower, and the outlet of its air inlet end smoke discharging pipe by a pipeline and after purifying is connected.
Claims (4)
1, aluminum oxide is carried air feeding technique in the fume cleaning of aluminum cell, gas blower sucks the hot flue gas behind the partial reaction that purifies in the smoke discharging pipe of back, this hot flue gas is reactor, each air-driven chute, fly-ash separator, penumatic elevator air feed through air supply line, and its waste heat flue gas that purifies in the smoke discharging pipe of back is discharged through main smoke ejector blower fan.
2, aluminum oxide is carried supply air system in the fume cleaning of aluminum cell, it is included as the air supply line and the gas blower of reactor, each air-driven chute, fly-ash separator, penumatic elevator air feed, and will react smoke discharging pipe and main smoke ejector blower fan after the purification that the after heat flue gas discharges, it is characterized in that smoke discharging pipe is connected with purifying afterwards by pipeline for the air inlet end of gas blower.
3, aluminum oxide is carried supply air system in the fume cleaning of aluminum cell according to claim 2, it is characterized in that the air inlet end of described gas blower is connected with the outlet that purifies the back smoke discharging pipe by pipeline.
4, aluminum oxide is carried supply air system in the fume cleaning of aluminum cell according to claim 2, it is characterized in that described gas blower is two, wherein for the gas blower of penumatic elevator air feed is a Root's blower, the air inlet end of Root's blower is connected with the outlet that purifies the back smoke discharging pipe by a pipeline; Other one is that the gas blower of blowing for reactor, fly-ash separator and each air-driven chute is high pressure centrifugal blower or Root's blower, and the outlet of its air inlet end smoke discharging pipe by a pipeline and after purifying is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100479844A CN100395375C (en) | 2006-10-10 | 2006-10-10 | Air feeding technique and equipment for transporting alumina in fume cleaning of aluminum cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100479844A CN100395375C (en) | 2006-10-10 | 2006-10-10 | Air feeding technique and equipment for transporting alumina in fume cleaning of aluminum cell |
Publications (2)
| Publication Number | Publication Date |
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| CN1958866A true CN1958866A (en) | 2007-05-09 |
| CN100395375C CN100395375C (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100479844A Expired - Fee Related CN100395375C (en) | 2006-10-10 | 2006-10-10 | Air feeding technique and equipment for transporting alumina in fume cleaning of aluminum cell |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429667B (en) * | 2007-11-06 | 2011-04-06 | 沈阳铝镁设计研究院 | Aluminum oxide warehouse top multi-point blanking device and method |
| CN102154663A (en) * | 2011-03-10 | 2011-08-17 | 伊川龙海科技实业有限公司 | Method for preheating alumina by using smoke afterheat from aluminium electrolysis production |
| CN102815536A (en) * | 2012-08-30 | 2012-12-12 | 山东华建仓储装备科技有限公司 | Pneumatic lifting system and usage thereof |
| CN102061488B (en) * | 2009-11-12 | 2012-12-19 | 沈阳铝镁设计研究院有限公司 | Electrolytic flue gas dry purification system |
| CN101880898B (en) * | 2009-05-04 | 2013-01-02 | 厦门热工环保系统工程有限公司 | Method for recovering flue gas waste heat of aluminum electrolysis cell |
| WO2013029335A1 (en) * | 2011-08-29 | 2013-03-07 | 中铝国际工程股份有限公司 | Bottom aspiration purification system |
| CN103361674A (en) * | 2012-03-28 | 2013-10-23 | 沈阳铝镁设计研究院有限公司 | Exhaust and dust collection device and method of alumina conveying sliding chute |
| CN104514016A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Reactor capable of enhancing wind-powder mixing effect |
| CN105220177A (en) * | 2014-06-30 | 2016-01-06 | 沈阳铝镁设计研究院有限公司 | Aluminium cell forced ventilation residual heat using device and Application way |
| CN110453249A (en) * | 2019-09-10 | 2019-11-15 | 东北大学设计研究院（有限公司） | A kind of pot tending machine movable negative-pressure dust cleaning system |
| CN111434370A (en) * | 2019-01-15 | 2020-07-21 | 沈阳铝镁设计研究院有限公司 | Electrolytic aluminum flue gas desulfurization process |
| CN112503557A (en) * | 2020-11-13 | 2021-03-16 | 内蒙古蒙达发电有限责任公司 | Dust collection power device and dust collection system |
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| SU658186A1 (en) * | 1977-01-19 | 1979-04-25 | Предприятие П/Я В-8849 | Device for blowing off aluminium electrolyzer |
| SU1121323A1 (en) * | 1983-01-26 | 1984-10-30 | Новокузнецкий Ордена Трудового Красного Знамени Алюминиевый Завод | Device for blowing gas ducts of aluminium electrolytic cells |
| JP3029895B2 (en) * | 1991-10-11 | 2000-04-10 | 三菱重工業株式会社 | Separation method of mixed gas by pressure temperature swing adsorption method |
| CN1049929C (en) * | 1995-11-20 | 2000-03-01 | 党建平 | Point-type connecting blanking and dry-purifying self-baking multi-anode aluminium electrolytic tank device |
| CN2303853Y (en) * | 1997-07-31 | 1999-01-13 | 沈阳北方净化技术有限公司 | Gas cleaning and recovering apparatus |
| CN1083496C (en) * | 1998-06-22 | 2002-04-24 | 田应甫 | Dry fume purifying system for self-roasting anodic aluminium electrolysis |
| JP2001149752A (en) * | 1999-11-26 | 2001-06-05 | Yoshizawa Lime Industry | Waste as treating method |
| RU2175031C1 (en) * | 2000-10-11 | 2001-10-20 | Закрытое акционерное общество "ТоксСофт" | Method for blowing gas ducts of aluminum cells with system for automatic supply of alumina |
| CN2477651Y (en) * | 2001-04-05 | 2002-02-20 | 沈阳北方净化技术有限公司 | Small area purifying and recovering appts. |
| CN2649604Y (en) * | 2003-08-25 | 2004-10-20 | 沈阳北环净化技术有限公司 | Multi-point smoke gas purification and recovery apparatus for aluminium electrolytic tank |
| CN2745956Y (en) * | 2004-11-26 | 2005-12-14 | 贵阳铝镁设计研究院 | Connecting structure of exhaust pipe of pneumatic flow channel balancing device for preventing blockage of main flue tube |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429667B (en) * | 2007-11-06 | 2011-04-06 | 沈阳铝镁设计研究院 | Aluminum oxide warehouse top multi-point blanking device and method |
| CN101880898B (en) * | 2009-05-04 | 2013-01-02 | 厦门热工环保系统工程有限公司 | Method for recovering flue gas waste heat of aluminum electrolysis cell |
| CN102061488B (en) * | 2009-11-12 | 2012-12-19 | 沈阳铝镁设计研究院有限公司 | Electrolytic flue gas dry purification system |
| CN102154663A (en) * | 2011-03-10 | 2011-08-17 | 伊川龙海科技实业有限公司 | Method for preheating alumina by using smoke afterheat from aluminium electrolysis production |
| WO2013029335A1 (en) * | 2011-08-29 | 2013-03-07 | 中铝国际工程股份有限公司 | Bottom aspiration purification system |
| CN103361674A (en) * | 2012-03-28 | 2013-10-23 | 沈阳铝镁设计研究院有限公司 | Exhaust and dust collection device and method of alumina conveying sliding chute |
| CN102815536A (en) * | 2012-08-30 | 2012-12-12 | 山东华建仓储装备科技有限公司 | Pneumatic lifting system and usage thereof |
| CN102815536B (en) * | 2012-08-30 | 2015-04-08 | 山东华建仓储装备科技有限公司 | Pneumatic lifting system and usage thereof |
| CN104514016A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Reactor capable of enhancing wind-powder mixing effect |
| CN105220177A (en) * | 2014-06-30 | 2016-01-06 | 沈阳铝镁设计研究院有限公司 | Aluminium cell forced ventilation residual heat using device and Application way |
| CN105220177B (en) * | 2014-06-30 | 2017-12-08 | 沈阳铝镁设计研究院有限公司 | Aluminium cell forced ventilation residual heat using device and Application way |
| CN111434370A (en) * | 2019-01-15 | 2020-07-21 | 沈阳铝镁设计研究院有限公司 | Electrolytic aluminum flue gas desulfurization process |
| CN110453249A (en) * | 2019-09-10 | 2019-11-15 | 东北大学设计研究院（有限公司） | A kind of pot tending machine movable negative-pressure dust cleaning system |
| CN112503557A (en) * | 2020-11-13 | 2021-03-16 | 内蒙古蒙达发电有限责任公司 | Dust collection power device and dust collection system |
| CN112503557B (en) * | 2020-11-13 | 2024-03-08 | 内蒙古蒙达发电有限责任公司 | Dust collection power device and dust collection system |
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| CN100395375C (en) | 2008-06-18 |
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Owner name: SHENYANG ALUMINUM-MAGNESIUM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENYANG ALUMINIUM MAGNESIUM DESIGN + RESEARCH INST. Effective date: 20100129 |
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Effective date of registration: 20100129 Address after: Heping North Street 184, Heping District, Liaoning, Shenyang Patentee after: Shenyang Aluminum & Magnesium Technology Co., Ltd. Address before: Heping North Street 184, Heping District, Liaoning, Shenyang Patentee before: Shenyang Aluminium and Magnesium Design Institute |
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Granted publication date: 20080618 Termination date: 20201010 |