阅读说明：本技术 一种预焙阳极铝电解槽热气回收装置 (Hot gas recovery device for prebaked anode aluminum electrolytic cell ) 是由 黄龙 杨洪保 黄三财 徐赋 曹建富 巫桂萍 刘胜园 陈朝永 罗军建 邓家宏 黄海 于 2020-06-20 设计创作，主要内容包括：本发明提供了一种预焙阳极铝电解槽热气回收装置,属于电解热气回收技术领域,包括设置在所述电解槽上部的水箱、与所述竖向通过第二管道连接的过滤管道以及与所述所述过滤管道远离所述第二管道通过第三管道连接的风机,所述风机远离所述第三管道的一端设置有第四管道,所述电解槽上连接有第一管道,所述第一管道远离所述电解槽的一端延伸至所述水箱内底部,所述过滤管道内部设置有滤网,所述滤网朝向所述第三管道的一侧设置有两组挡板。本发明实施例在对电解热气进行回收的同时还可对热气中的固体杂物进行过滤以及对氟化物进行净化,具有热气回收效果好的优点,避免热气在资源化利用的同时造成环境污染。(The invention provides a hot gas recovery device for a prebaked anode aluminum electrolytic cell, which belongs to the technical field of electrolytic hot gas recovery and comprises a water tank arranged at the upper part of the electrolytic cell, a filtering pipeline connected with the vertical direction through a second pipeline and a fan connected with the filtering pipeline far away from the second pipeline through a third pipeline, wherein one end of the fan far away from the third pipeline is provided with a fourth pipeline, the electrolytic cell is connected with a first pipeline, one end of the first pipeline far away from the electrolytic cell extends to the bottom in the water tank, a filter screen is arranged in the filtering pipeline, and one side of the filter screen facing the third pipeline is provided with two groups of baffles. The embodiment of the invention can filter solid impurities in the hot gas and purify fluorides while recovering the electrolytic hot gas, has the advantage of good hot gas recovery effect, and avoids environmental pollution caused by resource utilization of the hot gas.)

1. The utility model provides a prebaked anode aluminum cell steam recovery unit, which is characterized in that, including set up in water tank (3) on electrolysis trough (1) upper portion, with vertical (3) filter tube way (5) of connecting through second pipeline (4) and with filter tube way (5) keep away from fan (10) that second pipeline (4) are connected through third pipeline (9), fan (10) keep away from the one end of third pipeline (9) is provided with fourth pipeline (11), be connected with first pipeline (2) on electrolysis trough (1), the one end that first pipeline (2) kept away from electrolysis trough (1) extends to bottom in water tank (3), filter tube way (5) inside is provided with filter screen (15), filter screen (15) orientation one side of third pipeline (9) is provided with two sets of baffles (19), two sets of all seted up a plurality of evenly distributed's through-hole (18) on baffle (19), it is two sets of it has the purification layer to fill between baffle (19), filtering duct (5) inside is provided with the edge filtering duct (5) horizontal axis direction distribution's drive shaft (7), drive shaft (7) orientation a plurality of flabellums (6) are installed to the one end of second pipeline (4), and it is right to be provided with on drive shaft (7) the material subassembly of scraping that filter screen (15) cleared up.

2. The hot gas recovery apparatus for a prebaked anode aluminum reduction cell as claimed in claim 1, wherein said purification layer is composed of a plurality of alumina particles stacked between two sets of said baffles (19).

3. The hot gas recovery device for prebaked anode aluminum reduction cells according to claim 2, wherein a section of said driving shaft (7) away from said fan blades (6) passes through a set of baffles (19) adjacent to said screen (15) and extends between two sets of said baffles (19), and a plurality of stirring rods (14) are fixedly connected to a section of said driving shaft (7) located inside said purification layer.

4. The hot gas recovery device for the prebaked anode aluminum reduction cell according to claim 1, wherein the scraper assembly comprises a support plate (17) fixedly disposed on the driving shaft (7) and a scraper layer (16) disposed on a side of the support plate (17) facing the screen (15), and the scraper layer (16) is attached to a side wall of the screen (15).

5. The hot gas recovery apparatus for a prebaked anode aluminum reduction cell according to claim 4, wherein said cleaning layer (16) is a brush layer or a sponge layer.

6. The hot gas recovery device for the prebaked anode aluminum reduction cell according to claim 2 or 3, wherein the upper and lower sides of the filtering duct (5) are respectively provided with a through groove distributed along the length direction of the filtering duct (5), a sealing plate (12) is embedded in the through grooves, and a cover plate (8) is fixedly arranged at one end of the sealing plate (12) positioned outside the filtering duct (5).

7. The hot gas recovery device for a prebaked anode aluminum reduction cell according to claim 6, wherein the side wall of the sealing plate (12) is provided with circumferentially distributed sealing rings (13).

Technical Field

The invention belongs to the technical field of electrolytic hot gas recovery, and particularly relates to a hot gas recovery device for a prebaked anode aluminum electrolytic cell.

Background

The prebaked anode aluminum electrolytic cell uses prebaked anode carbon blocks as anodes, the anodes use petroleum coke and asphalt as raw materials, are molded by a vibration molding machine and are prebaked at the temperature of 900-.

The prebaked anode aluminum electrolytic cell is easy to generate gas containing a large amount of heat during electrolysis, at present, the hot electrolysis gas is usually collected to be used as an energy source of power generation equipment or heating equipment to realize resource utilization of the hot electrolysis gas, but the hot electrolysis gas contains a large amount of solid impurities and harmful gases mainly containing fluoride, and the solid impurities and the harmful gases are easy to cause environmental pollution during resource utilization and threaten human health.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problem to be solved by the embodiment of the invention is to provide a hot gas recovery device for a prebaked anode aluminum electrolytic cell.

In order to solve the technical problems, the invention provides the following technical scheme:

a hot gas recovery device for a prebaked anode aluminum electrolytic cell comprises a water tank arranged on the upper part of the electrolytic cell, a filtering pipeline connected with the vertical direction through a second pipeline and a fan connected with the filtering pipeline far away from the second pipeline through a third pipeline, wherein one end of the fan far away from the third pipeline is provided with a fourth pipeline, the electrolytic cell is connected with the first pipeline, one end of the first pipeline far away from the electrolytic cell extends to the bottom in the water tank, a filter screen is arranged inside the filtering pipeline, one side of the filter screen facing the third pipeline is provided with two groups of baffles, a plurality of through holes which are uniformly distributed are respectively arranged on the two groups of baffles, a purifying layer is filled between the two groups of baffles, a driving shaft distributed along the horizontal axis direction of the filtering pipeline is arranged inside the filtering pipeline, and a plurality of fan blades are arranged on the driving shaft facing one end of the second pipeline, the driving shaft is provided with a scraping component used for cleaning the filter screen.

As a further improvement of the invention: the purification layer is composed of a plurality of alumina particles stacked between two sets of the baffles.

As a further improvement of the invention: the drive shaft is kept away from one section of flabellum passes a set of baffle that is close to with the filter screen and extends to two sets of between the baffle, just the drive shaft is located a plurality of kickoff poles of fixedly connected with on purifying the inside shaft part in layer.

As a further improvement of the invention: scrape the material subassembly including fixed the setting and be in drive epaxial backup pad and setting are in the backup pad orientation the material layer of scraping of filter screen one side, scrape the material layer with the laminating of filter screen lateral wall.

As a still further improvement of the invention: the cleaning layer is a brush layer or a sponge layer.

As a still further improvement of the invention: the filter pipeline is characterized in that the upper side and the lower side of the filter pipeline are both provided with through grooves distributed along the length direction of the filter pipeline, sealing plates are embedded in the through grooves, and one ends, located outside the filter pipeline, of the sealing plates are fixedly provided with cover plates.

As a still further improvement of the invention: the sealing plate side wall is provided with sealing rings distributed circumferentially.

Compared with the prior art, the invention has the beneficial effects that:

the embodiment of the invention can filter solid impurities in the hot gas and purify fluorides while recovering the electrolytic hot gas, has the advantage of good hot gas recovery effect, and avoids environmental pollution caused by resource utilization of the hot gas.

Drawings

FIG. 1 is a schematic structural view of a hot gas recovery unit for a prebaked anode aluminum electrolytic cell;

FIG. 2 is a schematic view showing the structure of a sealing plate in a hot gas recovery apparatus for a prebaked anode aluminum electrolytic cell;

FIG. 3 is an enlarged view of area A of FIG. 1;

in the figure: 1-an electrolytic tank, 2-a first pipeline, 3-a water tank, 4-a second pipeline, 5-a filtering pipeline, 6-a fan blade, 7-a driving shaft, 8-a cover plate, 9-a third pipeline, 10-a fan, 11-a fourth pipeline, 12-a sealing plate, 13-a sealing ring, 14-a material stirring rod, 15-a filter screen, 16-a material scraping layer, 17-a supporting plate, 18-a through hole and 19-a baffle.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.