CN101457371B - Charging purification method and device for aluminum electrolysis flue gas two stage blowing - Google Patents
Charging purification method and device for aluminum electrolysis flue gas two stage blowing Download PDFInfo
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- CN101457371B CN101457371B CN2007102030251A CN200710203025A CN101457371B CN 101457371 B CN101457371 B CN 101457371B CN 2007102030251 A CN2007102030251 A CN 2007102030251A CN 200710203025 A CN200710203025 A CN 200710203025A CN 101457371 B CN101457371 B CN 101457371B
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Abstract
The invention discloses a two-stage-jetting feeding purification method of aluminum electrolysis fume and a device thereof. The method comprises the following steps: a fume branch pipe in front of an air inlet of an aluminum electrolysis fume dry purification system is added with a mixing drum; the upper end of the mixing drum is connected with an inlet branch pipe of a deduster of the aluminum electrolysis fume dry purification system, and the lower end of the mixing drum is connected with an outlet of a main fume purification pipe; the aluminum electrolysis fume moves from the bottom up in the mixing drum; two jetting devices are arranged in the mixing drum, the one arranged at an inlet end of the mixing drum is an fluorine-borne aluminum oxide jetting device, and the other one arranged at an outlet end of the mixing drum is a fresh aluminum oxide jetting device; and the fluorine-borne aluminum oxide jetting device performs a first-stage feeding purification on the aluminum electrolysis fume with high fluorine content which enters the mixing drum, and the fresh aluminum oxide jetting device performs the second-stage feeding purification on the fume processed by the first-stage feeding purification. The method is characterized by having low manufacturing cost and operation cost and saving adsorbent, and being capable of helping obtain higher fluoride purification efficiency.
Description
Technical field
The present invention relates to a kind of charging purification method and device of aluminum electrolysis flue gas two stage blowing, belong to the flue gases purification field.
Background technology
Containing a large amount of fluorochemicals in the flue gas that electrolytic aluminium factory is discharged in process of production, wherein mainly is hydrogen fluoride.Content of fluoride is above standard in air, can produce directly harm to people's eyes, skin and respiratory organs.Human body sucks excessive fluorine, will cause osteofluorosis such as osteosclerosis, hyperosteogeny, spot shape tooth, and severe patient makes people's disability.In order to safeguard ecotope, ensure HUMAN HEALTH.Each Aluminum Electrolysis Production factory all pays much attention to the gas cleaning work that produces in the aluminium electrolysis process, contains the discharging of fluorochemical flue gas with minimizing.
At present, mainly be to adopt the method for in flue gas, throwing in sorbent material to the gas cleaning of electrolysis of aluminum, finish absorption of hydrogen fluoride in the aluminium electrolytic flue with sorbent material, reach the purification purpose.Its method of throwing in sorbent material generally is direct input, rely on the turbulent flow of flue gas itself to reach mixing naturally of sorbent material and flue gas then, so this method existence mixing is inhomogeneous, influences the decontamination effect improving of flue gas; Also having a kind of method is to adopt the VIR press over system, if this method air demand is little, supply gas pressure is low, reinforced mixed effect is undesirable equally, if increase air demand and supply gas pressure then, use energy consumption higher, be unfavorable for the energy-conservation of system, manufacture relative complex simultaneously.
Summary of the invention
The object of the present invention is to provide the charging purification method and the device of the low aluminum electrolysis flue gas two stage blowing of a kind of device fabrication and running cost, it can control the degree of mixing of aluminium electrolytic flue and sorbent material easily, reach best mixed effect, help improving the purification efficiency of electrolysis flue gas purification system, help the electrolysis flue gas purification system energy-conservation and obnoxious flavour remove the lip quantity discharged, to overcome the deficiencies in the prior art.
The present invention is achieved in that method of the present invention is, installs mixing drum additional on the flue gas arm before the aluminium electrolytic flue dry purifying system blast inlet, and aluminium electrolytic flue is motion from bottom to top in mixing drum; Two blowing devices are installed in mixing drum, and what be installed in the mixing drum entrance end is the fluorinated alumina blowing device, and what be installed in the mixing drum exit end is the fresh aluminum oxide blowing device; Enter the aluminium electrolytic flue that fluoro-containing concentration is high in the mixing machine and carry out first step mixing purification by the fluorinated alumina blowing device, mix flue gas after being purified through the first step and carry out second stage mixing purification by the fresh aluminum oxide blowing device again, to obtain higher fluorine purification efficiency.
In the charging purification method of above-mentioned aluminum electrolysis flue gas two stage blowing, the barrel designs of described mixing drum becomes the form of Venturi tube, helps playing the flow-disturbing effect, promotes flue gas and fluorinated alumina or fresh aluminum oxide uniform mixing.
In the charging purification method of aforesaid aluminum electrolysis flue gas two stage blowing, described fluorinated alumina is the aluminum oxide that reclaims after the fresh aluminum oxide blowing device purifies, and the sorbent material that can be used as the fluorinated alumina blowing device uses, to reduce the consumption of fresh aluminum oxide.
In the charging purification method of aforesaid aluminum electrolysis flue gas two stage blowing, be equipped with reinforced elephant trunk and tracheae on described fluorinated alumina blowing device and the fresh aluminum oxide blowing device, sorbent material adds from reinforced elephant trunk, be provided with the correction funnel in the reinforced elephant trunk, avoid fresh aluminum oxide or fluorinated alumina amesiality, the lower end of reinforced elephant trunk is provided with collapsible tube, the below of collapsible tube is provided with diffusion disc, the spout of tracheae is to katabatic wind, fresh aluminum oxide or fluorinated alumina in the reinforced elephant trunk are blown on diffusion disc, form very strong revolution air-flow on diffusion disc top, fresh aluminum oxide or fluorinated alumina are involved in the air-flow, make it to mix with air-flow.
The reinforced refining plant of the aluminum electrolysis flue gas two stage blowing that makes up according to the charging purification method of aforesaid aluminum electrolysis flue gas two stage blowing comprises mixing drum 1; Bottom in mixing drum 1 is equipped with fluorinated alumina blowing device 2, and the top in the mixing drum 1 is equipped with fresh aluminum oxide blowing device 3.
In the reinforced refining plant of above-mentioned aluminum electrolysis flue gas two stage blowing, described fluorinated alumina blowing device 2 comprises reinforced elephant trunk 4; Reinforced elephant trunk 4 is bend pipes, and the upper end is obliquely installed stretches out outside the mixing drum 1, lower end and mixing drum 1 concentric vertical setting, and a side on the top of reinforced elephant trunk 4 vertical sections is connected with tracheae 5; Tracheae 5 also is a bend pipe, and tracheae 5 is arranged in the vertical setting of part of reinforced elephant trunk 4 and Open Side Down; Be provided with one or two correction funnel 6 in reinforced elephant trunk 4 vertical components, the lower end of reinforced elephant trunk 4 vertical components is provided with collapsible tube 7 and diffusion cloth mouth 8 successively, is provided with diffusion disc 9 below diffusion cloth mouth 8.
In the reinforced refining plant of aforesaid aluminum electrolysis flue gas two stage blowing, described fresh aluminum oxide blowing device 3 comprises reinforced elephant trunk 4; Reinforced elephant trunk 4 is bend pipes, and the upper end is obliquely installed stretches out outside the mixing drum 1, lower end and mixing drum 1 concentric vertical setting, and a side on the top of reinforced elephant trunk 4 vertical sections is connected with tracheae 5; Tracheae 5 also is a bend pipe, tracheae 5 be arranged in the part of reinforced elephant trunk 4 vertical be provided with and spout downward; Be provided with one or two correction funnel 6 in reinforced elephant trunk 4 vertical components, the lower end of reinforced elephant trunk 4 vertical components is provided with collapsible tube 7, is provided with diffusion disc 9 below diffusion cloth mouth 8.
In the reinforced refining plant of aforesaid aluminum electrolysis flue gas two stage blowing, the upper end of described reinforced elephant trunk 4 sloping portions is provided with porthole 10, glazed on the porthole 10.
In the refining plant that aforesaid aluminum electrolysis flue gas two stage blowing feeds in raw material, the top of described reinforced elephant trunk 4 vertical sections is provided with block clearing pipe 11.
In the reinforced refining plant of aforesaid aluminum electrolysis flue gas two stage blowing, height corresponding with two diffusion discs 9 on the described mixing drum 1 is respectively equipped with access door 12.
Compared with prior art, the charging purification method of aluminum electrolysis flue gas two stage blowing of the present invention and device manufacturing and running cost are low, because mixing drum has adopted the form of Venturi tube, help playing the effect of flow-disturbing, and diffuser plate is set at the spout place, air-flow can form very strong revolution air-flow on diffusion disc top, aluminum oxide is involved in the flue gas, promotes the uniform mixing of flue gas and aluminum oxide.The two stage blowing device is set in mixing drum, can obtains higher fluorine purification efficiency.By changing the size of wind-force in the tracheae, can control mixed effect easily, reach best decontamination effect improving.Because flue gas of the present invention and aluminum oxide mix, what the fluorinated alumina blowing device used simultaneously is the used aluminum oxide of fresh aluminum oxide blowing device, so can save sorbent material, reduces running cost, helps the requirement of enterprise's long-run development.
Description of drawings
Accompanying drawing 1 is a synoptic diagram of the present invention;
Accompanying drawing 2 is side-views of accompanying drawing 1;
Accompanying drawing 3 is partial enlarged drawings of fluorinated alumina blowing device among the present invention;
Accompanying drawing 4 is partial enlarged drawings of fresh aluminum oxide blowing device among the present invention.
Being labeled as in the accompanying drawing: 1-mixing drum, 2-fluorinated alumina blowing device, 3-fresh aluminum oxide blowing device, the 4-elephant trunk that feeds in raw material, 5-tracheae, the 6-funnel of rectifying a deviation, the 7-collapsible tube, 8-diffusion cloth mouth, 9-diffusion disc, the 10-porthole, 11-block clearing pipe, 12-access door, the flow direction of A-flue gas, B-gas flow direction, the flow direction of C-sorbent material.
Embodiment
Embodiments of the invention: the charging purification method of aluminum electrolysis flue gas two stage blowing of the present invention and device as depicted in figs. 1 and 2, arrow A is represented the flow direction of the flue gas that electrolysis of aluminum produces among the figure; B represents the gas flow direction; C represents the flow direction of sorbent material, and described sorbent material comprises fluorinated alumina and fresh aluminum oxide.This method is applied to the aluminium electrolytic flue dry purifying system.Flue gas arm (standpipe) before the aluminium electrolytic flue dry purifying system blast inlet is provided with mixing drum 1, and mixing drum 1 is designed to the form of Venturi tube, helps playing the effect of flow-disturbing, promotes flue gas and fluorinated alumina or fresh aluminum oxide uniform mixing.The lower end of mixing drum 1 purifies total smoke pipe outlet with the electrolysis flue gas that is connected to potroom and is connected, and aluminium electrolytic flue is motion from bottom to top in mixing drum 1; Two blowing devices are installed in mixing drum 1, and what be installed in mixing drum 1 entrance end is fluorinated alumina blowing device 2, and what be installed in the mixing drum exit end is fresh aluminum oxide blowing device 3; Enter the aluminium electrolytic flue that fluoro-containing concentration is high in the mixing drum and carry out the reinforced purification of the first step by fluorinated alumina blowing device 2, carry out the reinforced purification in the second stage by fresh aluminum oxide blowing device 3 again through the reinforced flue gas after being purified of the first step, obtaining higher fluorochemical purification efficiency, and can avoid the phase mutual interference between the two-stage.Described fluorinated alumina is the aluminum oxide that reclaims after fresh aluminum oxide blowing device 3 reinforced purifications, and the sorbent material that can be used as fluorinated alumina blowing device 2 uses, to reduce the consumption of aluminum oxide.Be equipped with reinforced elephant trunk 4 and tracheae 5 on described fluorinated alumina blowing device 2 and the fresh aluminum oxide blowing device 3, sorbent material adds from reinforced elephant trunk, be provided with the correction funnel in the reinforced elephant trunk, avoid sorbent material amesiality, the lower end of reinforced elephant trunk 4 is provided with collapsible tube 7, the below of collapsible tube 7 is provided with diffusion disc 9, the spout of tracheae 5 is blown downwards, sorbent material in the reinforced elephant trunk 4 is blown on diffusion disc 9, form very strong revolution air-flow on diffusion disc 9 tops, aluminum oxide is involved in the air-flow, makes it to mix with air-flow.
The reinforced refining plant of aluminum electrolysis flue gas two stage blowing, as depicted in figs. 1 and 2.This device is applied in the aluminium electrolytic flue dry purifying system.Flue gas arm (standpipe) before the aluminium electrolytic flue dry purifying system blast inlet is provided with mixing drum 1, the upper end of mixing drum 1 is connected with aluminium electrolytic flue dry purifying system fly-ash separator inlet branch, and the lower end of mixing drum 1 purifies total smoke pipe outlet with the electrolysis flue gas of potroom and is connected; Bottom in mixing drum 1 is equipped with fluorinated alumina blowing device 2, and the top in the mixing drum 1 is equipped with fresh aluminum oxide blowing device 3.
Described fluorinated alumina blowing device 2 as shown in Figure 3, its structure comprises reinforced elephant trunk 4; Reinforced elephant trunk 4 is bend pipes, and the upper end is obliquely installed stretches out outside the mixing drum 1, lower end and mixing drum 1 concentric vertical setting, and a side on the top of reinforced elephant trunk 4 vertical sections is connected with tracheae 5; Tracheae 5 also is a bend pipe, and tracheae 5 is arranged in the vertical setting of part of reinforced elephant trunk 4 and Open Side Down; Be provided with one or two correction funnel 6 in reinforced elephant trunk 4 vertical components, the lower end of reinforced elephant trunk 4 vertical components is provided with collapsible tube 7 and diffusion cloth mouth 8 successively, is provided with diffusion disc 9 below diffusion cloth mouth 8.
Described fresh aluminum oxide blowing device 3 as shown in Figure 4, it comprises reinforced elephant trunk 4; Reinforced elephant trunk 4 is bend pipes, and the upper end is obliquely installed stretches out outside the mixing drum 1, lower end and mixing drum 1 concentric vertical setting, and a side on the top of reinforced elephant trunk 4 vertical sections is connected with tracheae 5; Tracheae 5 also is a bend pipe, tracheae 5 be arranged in the part of reinforced elephant trunk 4 vertical be provided with and spout downward; Be provided with one or two correction funnel 6 in reinforced elephant trunk 4 vertical components, the lower end of reinforced elephant trunk 4 vertical components is provided with collapsible tube 7, is provided with diffusion disc 9 below diffusion cloth mouth 8.
For the ease of observing in the operational process whether obstruction is arranged, be provided with porthole 10, glazed on the porthole 10 in the upper end of reinforced elephant trunk 4 sloping portions.In case stop up, can be provided with block clearing pipe 11 by the top that is located at reinforced elephant trunk 4 vertical sections and clear up, height corresponding with two diffusion discs 9 on mixing drum 1 is respectively equipped with access door 12, so that keep in repair.
Claims (6)
1. the charging purification method of an aluminum electrolysis flue gas two stage blowing is characterized in that: install mixing drum additional on the flue gas arm before the aluminium electrolytic flue dry purifying system blast inlet, aluminium electrolytic flue is motion from bottom to top in mixing drum; Two blowing devices are installed in mixing drum, and what be installed in the mixing drum entrance end is the fluorinated alumina blowing device, and what be installed in the mixing drum exit end is the fresh aluminum oxide blowing device; Enter the aluminium electrolytic flue that fluoro-containing concentration is high in the mixing machine and carry out first step mixing purification by the fluorinated alumina blowing device, mix flue gas after being purified through the first step and carry out second stage mixing purification by the fresh aluminum oxide blowing device again, to obtain higher fluorine purification efficiency; Described fluorinated alumina is the aluminum oxide that reclaims after the fresh aluminum oxide blowing device purifies, and the sorbent material that can be used as the fluorinated alumina blowing device uses, to reduce the consumption of fresh aluminum oxide; Be equipped with reinforced elephant trunk and tracheae on described fluorinated alumina blowing device and the fresh aluminum oxide blowing device, sorbent material adds from reinforced elephant trunk, be provided with the correction funnel in the reinforced elephant trunk, avoid fresh aluminum oxide or fluorinated alumina amesiality, the lower end of reinforced elephant trunk is provided with collapsible tube, the below of collapsible tube is provided with diffusion disc, the spout of tracheae is to katabatic wind, fresh aluminum oxide or fluorinated alumina in the reinforced elephant trunk are blown on diffusion disc, form very strong revolution air-flow on diffusion disc top, fresh aluminum oxide or fluorinated alumina are involved in the air-flow, make it to mix with air-flow.
2. the charging purification method of aluminum electrolysis flue gas two stage blowing according to claim 1, it is characterized in that: the barrel designs of described mixing drum becomes the form of Venturi tube, help playing the flow-disturbing effect, promote flue gas and fluorinated alumina or fresh aluminum oxide uniform mixing.
3. the reinforced refining plant of an aluminum electrolysis flue gas two stage blowing that makes up according to the charging purification method of claim 1 or the described aluminum electrolysis flue gas two stage blowing of 2 arbitrary claims, it is characterized in that: it comprises mixing drum (1); Bottom in mixing drum (1) is equipped with fluorinated alumina blowing device (2), and the top in the mixing drum (1) is equipped with fresh aluminum oxide blowing device (3); Described fluorinated alumina blowing device (2) comprises reinforced elephant trunk (4); Reinforced elephant trunk (4) is a bend pipe, and the upper end is obliquely installed stretches out outside the mixing drum (1), and the lower end vertically is provided with mixing drum (1) is concentric, and reinforced elephant trunk (a 4) vertically side on the top of section is connected with tracheae (5); Tracheae (5) also is a bend pipe, and tracheae (5) is arranged in the vertical setting of part of reinforced elephant trunk (4) and Open Side Down; Vertically be provided with one or two correction funnel (6) in the part at reinforced elephant trunk (4), reinforced elephant trunk (4) the vertically lower end of part is provided with collapsible tube (7) and diffusion cloth mouth (8) successively, is provided with diffusion disc (9) in the below of diffusion cloth mouth (8); Described fresh aluminum oxide blowing device (3) comprises reinforced elephant trunk (4); Reinforced elephant trunk (4) is a bend pipe, and the upper end is obliquely installed stretches out outside the mixing drum (1), and the lower end vertically is provided with mixing drum (1) is concentric, and reinforced elephant trunk (a 4) vertically side on the top of section is connected with tracheae (5); Tracheae (5) also is a bend pipe, the part that tracheae (5) is arranged in reinforced elephant trunk (4) vertically be provided with and spout downward; Vertically be provided with one or two correction funnel (6) in the part at reinforced elephant trunk (4), reinforced elephant trunk (4) the vertically lower end of part is provided with collapsible tube (7), is provided with diffusion disc (9) in the below of diffusion cloth mouth (8).
4. according to the reinforced refining plant of the described aluminum electrolysis flue gas two stage blowing of claim 3, it is characterized in that: the upper end of described reinforced elephant trunk (4) sloping portion is provided with porthole (10), and porthole (10) is gone up glazed.
5. the reinforced refining plant of aluminum electrolysis flue gas two stage blowing according to claim 3 is characterized in that: described reinforced elephant trunk (4) the vertically top of section is provided with block clearing pipe (11).
6. the reinforced refining plant of aluminum electrolysis flue gas two stage blowing according to claim 3 is characterized in that: described mixing drum (1) is gone up the height corresponding with two diffusion discs (9) and is respectively equipped with access door (12).
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| CN2007102030251A CN101457371B (en) | 2007-12-13 | 2007-12-13 | Charging purification method and device for aluminum electrolysis flue gas two stage blowing |
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| CN2007102030251A CN101457371B (en) | 2007-12-13 | 2007-12-13 | Charging purification method and device for aluminum electrolysis flue gas two stage blowing |
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| CN101457371A CN101457371A (en) | 2009-06-17 |
| CN101457371B true CN101457371B (en) | 2011-01-19 |
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| CN105177630B (en) * | 2014-06-13 | 2019-02-26 | 贵阳铝镁设计研究院有限公司 | A kind of Smoke Gas Purity by Electrolysis is unpowered injection charging process and device |
| RU2668926C2 (en) * | 2017-02-16 | 2018-10-04 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Gas cleaning unit of cleaning electrolysis gases with gas-washing module containing a sleeve filter and reactor |
| CN107029480A (en) * | 2017-04-29 | 2017-08-11 | 成都易态科技有限公司 | Blowback component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054694A (en) * | 2007-02-17 | 2007-10-17 | 贵阳铝镁设计研究院 | Charging method and device for purifying two stages by electrolyzing flue gas using aluminum |
| CN101054695A (en) * | 2007-02-17 | 2007-10-17 | 贵阳铝镁设计研究院 | Charging method and device for purification all around by electrolyzing flue gas using aluminum |
| CN201132858Y (en) * | 2007-12-13 | 2008-10-15 | 贵阳铝镁设计研究院 | Charge purification apparatus of two-stage blowing for aluminum electrolysis fume |
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- 2007-12-13 CN CN2007102030251A patent/CN101457371B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054694A (en) * | 2007-02-17 | 2007-10-17 | 贵阳铝镁设计研究院 | Charging method and device for purifying two stages by electrolyzing flue gas using aluminum |
| CN101054695A (en) * | 2007-02-17 | 2007-10-17 | 贵阳铝镁设计研究院 | Charging method and device for purification all around by electrolyzing flue gas using aluminum |
| CN201132858Y (en) * | 2007-12-13 | 2008-10-15 | 贵阳铝镁设计研究院 | Charge purification apparatus of two-stage blowing for aluminum electrolysis fume |
Non-Patent Citations (1)
| Title |
|---|
| JP昭56-163291A 1981.12.15 |
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Effective date of registration: 20110525 Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |