CN101580950A - Gas gathering system of divisional gas-gathering type aluminum electrolytic bath - Google Patents
Gas gathering system of divisional gas-gathering type aluminum electrolytic bath Download PDFInfo
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- CN101580950A CN101580950A CNA2009100119999A CN200910011999A CN101580950A CN 101580950 A CN101580950 A CN 101580950A CN A2009100119999 A CNA2009100119999 A CN A2009100119999A CN 200910011999 A CN200910011999 A CN 200910011999A CN 101580950 A CN101580950 A CN 101580950A
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Abstract
The invention relates to a gas gathering system of a divisional gas-gathering type aluminum electrolytic bath, which belongs to the technical field of electrolyzing aluminum. The gas gathering system of the electrolytic bath comprises in-bath horizontal flues, clapboards, vertical flues, upper convergence flues, bottom convergence flues and a main flue, wherein the number of the in-bath horizontal flues is between 2 and 5, the height range is between 100 and 400 millimeters; the clapboards are vertical to the length direction of the horizontal flues and equally divide the length of the horizontal flues; and the horizontal flues and the clapboards divide a horizontal gas-gathering area into a plurality of areas. The vertical flues are arranged at one end or two ends of the electrolytic bath, have a same structure with a door-type upright post or are positioned on the outside of the door-type upright column, and are communicated with the main flue though the bottom convergence flues. By applying the system, a two-end or single-end gas-gathering mode can be adopted, and no matter which gas-gathering mode is adopted, a plurality of the in-bath horizontal flues are arranged to divide the in-bath space into a plurality of areas to perform divisional gas gathering, and the distribution evenness of positive pressure in the bath is improved, thus the gas gathering efficiency is improved.
Description
Technical field
The invention belongs to the aluminum electrolysis technology field, be specifically related to a kind of natural gas gathering system of subregion gas-collecting aluminium cell.
Background technology
Along with the aluminium cell capacity increases, the corresponding increase of electrolyzer length.In this case, the groove top gas extractor structure formation of traditional structure can not satisfy the requirement that the electrolyzer internal mask pressure distributes, particularly under energy-conservation, the overall situation that reduces discharging, the structure formation of gas extractor just seems more important to the effect that aluminum electrolysis industry reduces discharging.
Add the V-structure gas extractor under the early stage horizontal cover plate of the many employings of large-sized prebaked electrolyzer.This gas collecting mode, because gas extractor is too near apart from the electrolyzer pinkeye, flue gas fast rise under high pressure head effect of heat, negative pressure inequality or negative pressure value are crossed when hanging down in groove, and flue gas is very easily overflowed outside the groove.For this reason, the expert has proposed multiple different groove top gas extractor structure formation both at home and abroad, as, flue is moved to groove top, reach the purpose that improves gas collecting efficiency by flowing naturally of flue gas.But this form not only needs to improve the superstructure height, and structure is more complicated also, brings difficulty for the configuration of crust breaking cutting agency.The expert who also has has proposed to transform under the primary structure form, and former V-type gas collection structure of modification is become the inner and outer pipes nested, realizes the subregion gas collection.Although this structure has obtained comparatively significantly gas collection effect, but still fails to solve the former V-structure device problem too near apart from pinkeye, gas collecting efficiency is still restricted.
The structure formation of above-mentioned several gas extractors, in any case adjust, all have a problem, that is exactly that gas extractor is positioned at the groove top, occupies upper space, like this, make superstructure become complicated on the one hand, on the other hand, improve gas collecting efficiency, the cell body height will be forced to improve, and so not only increase facility investment but also improve factory building height.
Summary of the invention
At the weak point that aluminum current electrolyzer flue gas collection technique exists, the invention provides a kind of natural gas gathering system of subregion gas-collecting aluminium cell, reach the purpose that improves gas collecting efficiency.
The present invention makes technological improvement to the natural gas gathering system of existing electrolyzer, below the horizontal cover plate of electrolyzer, many horizontal flues are set, door type column design with the electrolyzer both ends or one end becomes vertical gas pass simultaneously, or in the door type column outside of electrolyzer both ends or one end vertical gas pass is set in addition.Dividing plate is set on the horizontal flue, and horizontal flue and dividing plate are divided into a plurality of zones with the level set gas area like this, and the two ends of horizontal flue are provided with the top flue that confluxes, and are communicated with horizontal flue, and the top flue that confluxes is communicated with vertical gas pass again.The bottom flue that confluxes is set in the lower end of vertical gas pass, and is communicated with vertical gas pass, the bottom flue that confluxes is communicated with main flue, and main flue is communicated with the potroom main flue.
The natural gas gathering system of subregion gas-collecting aluminium cell of the present invention, comprise the flat flue of trough inner water, dividing plate, vertical gas pass, flue confluxes on top, flue confluxes in the bottom, main flue, the flat flue of trough inner water be independently or and the horizontal cover plate on groove top combine, quantity is 2～5, the altitude range of the flat flue of trough inner water is 100～400mm, divider upright is in horizontal flue length direction and its length of five equilibrium, the top flue that confluxes is positioned at the flat flue of trough inner water two ends, and be communicated with the flat flue of trough inner water two ends, vertical gas pass is installed on the one or both ends of electrolyzer, vertical gas pass is same structure with door type column or is positioned at a type column outside, the top flue that confluxes is communicated with vertical gas pass, flue confluxes bottom the vertical gas pass lower end is provided with, vertical gas pass is communicated with main flue by the bottom flue that confluxes, main flue is at the bottom of the electrolyzer bassinet stand and between the ground, or locates below ground level, and main flue is communicated with the potroom main flue.
The flue gas discharge opening (being the confluence of both sides flue gas) that two ends are equipped with vertical gas pass and main flue departs from the bottom of electrolytic tank central position, with the approaching vertical gas pass of the flue gas discharge opening of main flue on pressure regulator valve is installed.
Vertical gas pass is installed on an end of electrolyzer, and quantity is 2～5; Vertical gas pass is installed on the two ends of electrolyzer, and each terminal number amount is 2～5.
Horizontal flue and separator lined level set gas area are a plurality of zones, and region quantity is (n+1) * 2, and n is the quantity of horizontal flue.
Like this spatial division in the groove is become several regions, carry out the subregion gas collection, can make the interior negative pressure of groove distribute more even.
When using natural gas gathering system of the present invention, electrolysis flue gas is collected into the flat flue of each regional trough inner water, the flue that confluxes through top then, vertical gas pass, the bottom flue that confluxes confluxes to main flue, discharges through the potroom main flue.
Each member of natural gas gathering system of the present invention all adopts conventional material, with the ordinary method manufacturing.
The natural gas gathering system technical characterstic of subregion gas-collecting aluminium cell of the present invention is as follows.
(1) adopt the many flat flues of trough inner water, and the horizontal flue height is reduced, the space of horizontal cover plate below is increased, highly beneficial to improving gas collecting efficiency.Gas collecting efficiency compared with prior art can improve 0.5～1.5%.
(2) utilize the double vertical gas pass of doing of door type column, can save facility investment, save the space.
(3) bottom conflux flue, main flue are set, electrolysis flue gas is come together in the electrolytic bath shell bottom, simplified superstructure, reduced superstructure weight, this is highly beneficial to reducing the pot shell distortion and improving cell life.Simultaneously, make full use of the bottom land idle space, can reduce the electrolyzer total height, create conditions for reducing factory building height.
(4) use this system and both can adopt the two ends gas collecting mode, also can adopt single-ended gas collecting mode, no matter adopt which kind of gas collecting mode, because the setting of the flat flue of a plurality of trough inner waters, the subregion gas collection can both be carried out in zoning territory in space in the groove, improve negative pressure distribution consistency degree in the groove.
Description of drawings
Fig. 1 is 1. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 2 is 1. synoptic diagram left view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 3 is 1. synoptic diagram vertical view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 4 is 2. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 5 is 3. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 6 is 4. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 7 is 5. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Fig. 8 is 6. synoptic diagram front view of the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention;
Among the figure: the flat flue of 1 trough inner water, 2 left vertical flues, 3 right side vertical gas passes, 4 bottoms flue, 5 main flues, 6 variable valve, the 7 tops flue that confluxes that confluxes, 8 dividing plates.
Embodiment
Further specify the natural gas gathering system of subregion gas-collecting aluminium cell of the present invention with embodiment below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Figure 3, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 1., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, left vertical flue 2, right side vertical gas pass 3, and flue 4, top conflux flue 7, main flue 5 and variable valve 6 conflux in the bottom.The horizontal cover plate on the flat flue groove of trough inner water top combines, and quantity is 2, and the height of the flat flue of trough inner water is 300mm.Divider upright is in horizontal flue length direction and its length of five equilibrium, and like this, horizontal flue and dividing plate are divided into 6 area I, II, III, IV, V, VI with the level set gas area.The top flue 7 that confluxes is arranged on the flat flue of trough inner water two ends, and is communicated with the flat flue of trough inner water two ends.Left vertical flue 2, right side vertical gas pass 3 are positioned at the type column outside, and the top flue 7 that confluxes is communicated with left vertical flue 2, right side vertical gas pass 3.Left vertical flue 2, right side vertical gas pass 3 quantity all are 2.The bottom flue 4 that confluxes is arranged on the lower end of both sides vertical gas pass and is communicated with vertical gas pass lower end, both sides.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 and the bottom flue 4 that confluxes is communicated with, and is communicated with the potroom main flue.
The flue gas discharge opening of main flue 5 is close right side, flue gas confluence, a both sides vertical gas pass 3, and pressure regulator valve 6 then is set on right side vertical gas pass 3.
As shown in Figure 4, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 2., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, left vertical flue 2, right side vertical gas pass 3, bottom conflux flue 4, top conflux flue 7, main flue 5 and variable valve 6.The flat flue of trough inner water is independently, and quantity is 5, and the height of the flat flue of trough inner water is 400mm.Divider upright is in horizontal flue length direction and its length of five equilibrium, and like this, horizontal flue and dividing plate are divided into a plurality of zones with the level set gas area, and region quantity is 12.The top flue 7 that confluxes is arranged on the flat flue of trough inner water 1 two ends, and is communicated with the flat flue of trough inner water 1 two ends.Left vertical flue 2, right side vertical gas pass 3 is same structure with a door type column, and the top flue 7 that confluxes is communicated with left vertical flue 2, right side vertical gas pass 3.Left vertical flue 2, right side vertical gas pass 3 quantity all are 5.The bottom flue 4 that confluxes is arranged on the lower end of left vertical flue 2, right side vertical gas pass 3 and is communicated with left vertical flue 2, right side vertical gas pass 3 lower ends.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 and the bottom flue 4 that confluxes is communicated with, and is communicated with the potroom main flue.
The flue gas discharge opening of main flue 5 is close right side, flue gas confluence, a both sides vertical gas pass 3, and pressure regulator valve 6 then is set on right side vertical gas pass 3.
As shown in Figure 5, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 3., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, left vertical flue 2, right side vertical gas pass 3, and flue 4, top conflux flue 7, main flue 5 conflux in the bottom.The horizontal cover plate on flat flue 1 of trough inner water and groove top combines, and quantity is 3, and the height of the flat flue 1 of trough inner water is 100mm.Divider upright is in horizontal flue length direction and its length of five equilibrium, and like this, horizontal flue and dividing plate are divided into a plurality of zones with the level set gas area, and region quantity is 8.The top flue 7 that confluxes is arranged on the flat flue of trough inner water two ends, and is communicated with the flat flue of trough inner water two ends.Left vertical flue 2, right side vertical gas pass 3 are positioned at the type column outside, and the top flue 7 that confluxes is communicated with left vertical flue 2, right side vertical gas pass 3.Left vertical flue 2, right side vertical gas pass 3 quantity all are 3, and the bottom flue 4 that confluxes is arranged on the lower end of left vertical flue 2, right side vertical gas pass 3 and is communicated with left vertical flue 2, right side vertical gas pass 3 lower ends.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 and the bottom flue 4 that confluxes is communicated with, and is communicated with the potroom main flue.
The flue gas discharge opening of main flue 5 is that flue gas confluence, both sides is positioned at the bottom of electrolytic tank central position, therefore pressure regulator valve needn't be set.
As shown in Figure 6, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 4., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, left vertical flue 2, right side vertical gas pass 3, bottom conflux flue 4, top conflux flue 7, main flue 5.The horizontal cover plate on flat flue 1 of trough inner water and groove top combines, and quantity is 4, and the height of the flat flue of trough inner water is 400mm.Dividing plate 8 is perpendicular to horizontal flue 1 length direction and its length of five equilibrium, and like this, horizontal flue 1 and dividing plate 8 are divided into a plurality of zones with the level set gas area, and region quantity is 10.The top flue 7 that confluxes is arranged on the flat flue of trough inner water 1 two ends, and is communicated with the flat flue of trough inner water 1 two ends.Left vertical flue 2, right side vertical gas pass 3 are positioned at the type column outside, and the top flue 7 that confluxes is communicated with left vertical flue 2, right side vertical gas pass 3.Left vertical flue 2, right side vertical gas pass 3 quantity all are 4.The bottom flue 4 that confluxes is arranged on the lower end of left vertical flue 2, right side vertical gas pass 3 and is communicated with left vertical flue 2, right side vertical gas pass 3 lower ends.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 and the bottom flue 4 that confluxes is communicated with, and is communicated with the potroom main flue.
The flue gas discharge opening of main flue 5 is that flue gas confluence, both sides is positioned at the bottom of electrolytic tank central position, therefore pressure regulator valve needn't be set.
As shown in Figure 7, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 5., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, right side vertical gas pass 3, top conflux flue 7, bottom conflux flue 4, main flue 5.The horizontal cover plate on flat flue 1 of trough inner water and groove top combines, and quantity is 2, and the height of the flat flue of trough inner water is 300mm.Dividing plate 8 is perpendicular to horizontal flue length direction and its length of five equilibrium, and like this, horizontal flue and dividing plate are divided into 6 zones with the level set gas area.The top flue 7 that confluxes is arranged on the flat flue of trough inner water 1 two ends, and is communicated with the flat flue of trough inner water 1 two ends.Right side vertical gas pass 3 is positioned at the type column outside, and the top flue 7 that confluxes is communicated with right side vertical gas pass 3.Conflux flue 4 and be communicated with right side vertical gas pass 3 of bottom is set in right side vertical gas pass 3 lower ends, and vertical gas pass 3 quantity in right side are 2.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 and the bottom flue 4 that confluxes is communicated with, and is communicated with the potroom main flue.
Embodiment 6
As shown in Figure 8, for the natural gas gathering system structure formation of subregion gas-collecting aluminium cell of the present invention 6., this natural gas gathering system comprises the flat flue 1 of trough inner water, dividing plate 8, right side vertical gas pass 3, top conflux flue 7, bottom conflux flue 4, main flue 5.The horizontal cover plate on flat flue 1 of trough inner water and groove top combines, and quantity is 3, and the height of the flat flue of trough inner water is 150mm.Dividing plate 8 is perpendicular to flat flue 1 length direction of trough inner water and its length of five equilibrium, and like this, flat flue 1 of trough inner water and dividing plate 8 are divided into 8 zones with the level set gas area.The top flue 7 that confluxes is arranged on the flat flue of trough inner water 1 two ends, and is communicated with the flat flue of trough inner water 1 two ends.Right side vertical gas pass 3 is same structure with door type column, i.e. the double flue of doing of door type column.The top flue 7 that confluxes is communicated with right side vertical gas pass 3.Conflux flue 4 and be communicated with right side vertical gas pass 3 of bottom is set in right side vertical gas pass 3 lower ends, and vertical gas pass 3 quantity in right side are 3.Main flue 5 is arranged at the bottom of the electrolyzer bassinet stand and between the ground.Main flue 5 is communicated with right side vertical gas pass 3, and is communicated with the potroom main flue.
Claims (4)
1, a kind of natural gas gathering system of subregion gas-collecting aluminium cell, it is characterized in that natural gas gathering system comprises the flat flue of trough inner water, dividing plate, vertical gas pass, flue confluxes on top, flue confluxes in the bottom, main flue, the flat flue of trough inner water be independently or and the horizontal cover plate on groove top combine, quantity is 2～5, the altitude range of the flat flue of trough inner water is 100～400mm, divider upright is in horizontal flue length direction and its length of five equilibrium, the top flue that confluxes is positioned at the flat flue of trough inner water two ends, and be communicated with the flat flue of trough inner water two ends, vertical gas pass is installed on the one or both ends of electrolyzer, vertical gas pass is same structure with door type column or is positioned at a type column outside, the top flue that confluxes is communicated with vertical gas pass, flue confluxes bottom the vertical gas pass lower end is provided with, vertical gas pass is communicated with main flue by the bottom flue that confluxes, main flue is at the bottom of the electrolyzer bassinet stand and between the ground, or locates below ground level, and main flue is communicated with the potroom main flue.
2, according to the natural gas gathering system of the described subregion gas-collecting of claim 1 aluminium cell, it is characterized in that two ends are equipped with the flue gas discharge opening of vertical gas pass and main flue (being the confluence of both sides flue gas) and depart from the bottom of electrolytic tank central position, with the approaching vertical gas pass of the flue gas discharge opening of main flue on pressure regulator valve is installed.
3, according to the natural gas gathering system of the described subregion gas-collecting of claim 1 aluminium cell, it is characterized in that vertical gas pass is installed on an end of electrolyzer, quantity is 2～5; Vertical gas pass is installed on the two ends of electrolyzer, and each terminal number amount is 2～5.
4, according to the natural gas gathering system of the described subregion gas-collecting of claim 1 aluminium cell, it is characterized in that horizontal flue and separator lined level set gas area are a plurality of zones, region quantity is (n+1) * 2, n is the quantity of horizontal flue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910011999 CN101580950B (en) | 2009-06-12 | 2009-06-12 | Gas gathering system of divisional gas-gathering type aluminum electrolytic bath |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910011999 CN101580950B (en) | 2009-06-12 | 2009-06-12 | Gas gathering system of divisional gas-gathering type aluminum electrolytic bath |
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| CN101580950A true CN101580950A (en) | 2009-11-18 |
| CN101580950B CN101580950B (en) | 2011-01-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557712A (en) * | 2017-10-13 | 2018-01-09 | 徐州瑞马科宝自动化技术有限公司 | Galvanizing system and the method that side goes out are entered in a kind of end |
| CN109136994A (en) * | 2017-06-13 | 2019-01-04 | 沈阳铝镁设计研究院有限公司 | Large space frame-type gas collection lower flue structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2787684Y (en) * | 2005-03-21 | 2006-06-14 | 贵阳铝镁设计研究院 | Flue arrangement structure of small-sized pre-baking anode aluminium electrolytic cell |
| CN201080505Y (en) * | 2007-08-17 | 2008-07-02 | 东北大学设计研究院（有限公司） | Large-sized aluminum cell upper gas collection smoke discharging structure |
| CN201162056Y (en) * | 2008-02-19 | 2008-12-10 | 东北大学设计研究院（有限公司） | Gas collection structure of large-scale aluminum cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136994A (en) * | 2017-06-13 | 2019-01-04 | 沈阳铝镁设计研究院有限公司 | Large space frame-type gas collection lower flue structure |
| CN107557712A (en) * | 2017-10-13 | 2018-01-09 | 徐州瑞马科宝自动化技术有限公司 | Galvanizing system and the method that side goes out are entered in a kind of end |
| CN107557712B (en) * | 2017-10-13 | 2023-07-18 | 徐州瑞马智能技术有限公司 | Zinc plating system and method with end inlet side outlet |
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