CN211227371U - Aluminum electrolysis flue gas purification feeding device - Google Patents
Aluminum electrolysis flue gas purification feeding device Download PDFInfo
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- CN211227371U CN211227371U CN201921669092.7U CN201921669092U CN211227371U CN 211227371 U CN211227371 U CN 211227371U CN 201921669092 U CN201921669092 U CN 201921669092U CN 211227371 U CN211227371 U CN 211227371U
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Abstract
The utility model provides an aluminium electroloysis gas cleaning feeding device, including uptake, with the dust remover of uptake intercommunication, be located the uptake be arranged in with contain fluorine aluminium oxide from the separator of flue gas separation, be used for the return case that contains fluorine aluminium oxide collection that the separator separates, to the import flue of uptake transport flue gas, be used for containing fluorine aluminium oxide in the return case carry the uptake in the circulation charging means, be used for carrying the aluminium oxide charging means to the uptake in the flue, circulation charging means include with the return case intercommunication, utilize gravity to make the chute that contains the unpowered downstream of fluorine aluminium oxide, the chute end is equipped with the filling tube that is located the import flue for solve the reinforced technical problem of fluorine aluminium oxide.
Description
Technical Field
The utility model relates to an aluminium electroloysis gas cleaning feeding device.
Background
In the electrolytic aluminum production process, the flue gas generated by electrolysis is adsorbed and purified by using aluminum oxide at present, the flue gas is divided into one-stage purification and two-stage purification according to different purification processes, the flue gas is divided into a VRI reactor, a power reactor, a flue reactor and the like according to different reactors, and the two-stage purification process is mainly used due to high purification efficiency. In the two segmentation purification technologies at present, because the restriction of the existing purification technologies and structures, the Roots blower is adopted as power for adding fresh alumina, and the material is sprayed into the bag filter box by adopting the gas stripping machine, so that the mixing uniformity of the flue gas and the material is general, the feeding point is single, the reaction time is short, more importantly, the feeding Roots blower and the gas stripping machine need to be configured, and the construction cost and the power consumption are increased.
The invention discloses a purification method and a device for electrolytic aluminum flue gas, application publication No. CN101775625A and application publication No. 2010.07.14 in the prior art, wherein the flue gas generated in an electrolytic cell is sucked into an inlet pipeline by the suction force of a draught fan and is distributed into an R-shaped flue through a guide plate and a regulating valve; the outlet of the R-shaped flue is connected with an ash hopper, fresh alumina enters a conveying chute and is sprayed into the ash hopper below a filter bag through a pneumatic elevator to perform adsorption reaction with flue gas, gas and solid separation is performed through the filter bag of a bag-type dust remover, fluorine-containing alumina in an ash hopper fluidized bed enters a variable frequency feeder through the chute, the alumina is sprayed into a pipeline at the lower part of the R-shaped flue through a jet hole discharge port through variable frequency feeding to perform adsorption reaction again, the gas and solid separation is performed through the filter bag of the bag-type dust remover after the adsorption reaction, the fluoride-containing alumina is filtered and is conveyed into a fluorine-containing alumina bin through the fluorine-containing alumina chute, and the purified flue gas is emptied through. The fluorine-containing alumina enters the lower pipeline of the R-shaped flue through variable frequency injection, so that the fluorine-containing alumina needs power input when entering the lower pipeline of the R-shaped flue, and the energy consumption is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aluminum electrolysis flue gas purification feeding device, which solves the technical problem of unpowered feeding of fluorine-containing alumina.
The technical scheme of the utility model is realized like this: the aluminum electrolysis flue gas purification feeding device comprises an ascending flue, a dust remover communicated with the ascending flue, a separator positioned in the ascending flue and used for separating fluorine-containing alumina from flue gas, a return box used for collecting the fluorine-containing alumina separated by the separator, an inlet flue used for conveying the flue gas to the ascending flue, a circulating feeder used for conveying the fluorine-containing alumina in the return box to the ascending flue, and an alumina feeder used for conveying the alumina to the ascending flue, wherein the circulating feeder comprises a chute communicated with the return box and used for enabling the fluorine-containing alumina to move downwards by using gravity, and a feeding pipe positioned in the inlet flue is arranged at the tail end of the chute.
Furthermore, the inlet flue and the ascending flue are internally provided with baffle plates for slowing down the descending speed of the fluorine-containing alumina or the alumina, and the baffle plates are positioned below the alumina feeder or the circulating feeder.
Furthermore, a guide plate used for changing the flow direction of the flue gas is arranged in the separator, and the guide plate is positioned at the outlet of the separator, so that the fluorine-containing alumina carried by the flue gas collides with the guide plate and then rolls down to the return box along the guide plate under the action of gravity.
Furthermore, the separator comprises an annular separation cavity, one end of the separation cavity is communicated with the inlet flue, and the other end of the separation cavity is communicated with the uptake flue.
Furthermore, the return box is provided with a discharge pipeline for discharging the fluorine-containing alumina.
Furthermore, the tail end of the dust remover is provided with an induced draft fan so as to form a negative pressure environment at the tail end of the dust remover.
Furthermore, the number of the feed pipes is at least two.
By adopting the technical scheme, the beneficial effects of the utility model are that: the inlet flue of the aluminum electrolysis flue gas purification and feeding device of the utility model is communicated with the separator, and the fluorine-containing alumina is added into the inlet flue by gravity; the uptake flue is communicated with the dust remover, and the alumina is added into the uptake flue by gravity. The two feeding processes of the alumina and the fluorine-containing alumina are unpowered feeding, namely no extra power equipment or compressed air consumption is needed in the feeding process, so that the energy consumption of the device is reduced, the contact time of the alumina and the fluorine-containing alumina with flue gas is prolonged, and the reaction efficiency is improved.
Further, the utility model discloses an aluminium electroloysis gas cleaning feeding device's purification flow is two segmentations, and high concentration flue gas earlier carries out an adsorption reaction with fluorine-containing alumina promptly, and the concentration of high concentration flue gas reduces this moment, later carries out secondary adsorption reaction with the alumina contact, so purification efficiency is higher.
Further, the utility model discloses an aluminium electroloysis gas cleaning feeding device is through setting up the separator, with fluorine-containing alumina and the flue gas separation after the reaction, is separated in fluorine-containing alumina follows the flue gas, and the flue gas flows to the dust remover, and the whole flow of system only has the sub-strand material, and the operational load is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the matching relationship between the inlet flue and the separator, the material return box and the circulating feeder of the present invention;
FIG. 3 is a schematic structural view of the stopper plate of the present invention;
wherein: 1. the device comprises an inlet flue, 2, a separator, 21, a separation cavity, 3, an alumina feeder, 4, an uptake flue, 5, a dust remover, 6, a return box, 7, a circulating feeder, 71, a chute, 72, a feeding pipe, 8, a material stopping plate, 9, a guide plate, 10, a discharge pipeline, 11 and an induced draft fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment 1 of an aluminum electrolysis flue gas purification feeding device comprises an uptake flue 4, a dust remover 5 communicated with the uptake flue, a separator 2 positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a return box 6 used for collecting the fluorine-containing alumina separated by the separator, an inlet flue 1 used for conveying the flue gas to the uptake flue, a circulating feeder 7 used for conveying the fluorine-containing alumina in the return box into the uptake flue, and an alumina feeder 3 used for conveying the alumina into the uptake flue, wherein the circulating feeder comprises a chute 71 communicated with the return box and used for making the fluorine-containing alumina move downwards by using gravity, and a feeding pipe 72 positioned in the inlet flue is arranged at the tail end of the chute. The circulating feeder 7 and the alumina feeder 3 have the same structure, and are different in that a chute 71 of the circulating feeder 7 is communicated with a material return box, and a chute 71 of the alumina feeder 3 is communicated with the outside to feed alumina into an upward flue from the outside. The inlet flue of the aluminum electrolysis flue gas purification and feeding device of the utility model is communicated with the separator, and the fluorine-containing alumina is added into the inlet flue by gravity; the uptake flue is communicated with the dust remover, and the alumina is added into the uptake flue by gravity. The two feeding processes of the alumina and the fluorine-containing alumina are unpowered feeding, namely no additional power equipment or compressed air consumption is needed in the feeding process, so that the system energy consumption is reduced, the contact time of the alumina and the fluorine-containing alumina with flue gas is prolonged, and the reaction efficiency is improved.
An embodiment 2 of an aluminum electrolysis flue gas purification feeding device comprises an uptake flue 4, a dust remover 5 communicated with the uptake flue, a separator 2 positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a material returning box 6 used for collecting the fluorine-containing alumina separated by the separator, and an inlet flue 1 used for conveying the flue gas to the uptake flue as shown in figures 1-3, the circulating feeder 7 is used for conveying the fluorine-containing alumina in the return box to the ascending flue, and the alumina feeder 3 is used for conveying the alumina to the ascending flue, the circulating feeder comprises a chute 71 which is communicated with the return box and enables the fluorine-containing alumina to move downwards by utilizing gravity, a feeding pipe 72 which is positioned in the inlet flue is arranged at the tail end of the chute, baffle plates 8 which are used for slowing down the descending speed of the fluorine-containing alumina or the alumina are arranged in the inlet flue and the ascending flue, and the baffle plates are positioned below the alumina feeder or the circulating feeder.
An embodiment 3 of an aluminum electrolysis flue gas purification feeding device comprises an uptake flue 4, a dust remover 5 communicated with the uptake flue, a separator 2 positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a return box 6 used for collecting fluorine-containing alumina separated by the separator, an inlet flue 1 used for conveying flue gas to the uptake flue, a circulating feeder 7 used for conveying fluorine-containing alumina in the return box into the uptake flue, and an alumina feeder 3 used for conveying alumina into the uptake flue, wherein the circulating feeder comprises a chute 71 communicated with the return box and used for making the fluorine-containing alumina move downwards by using gravity, a feeding pipe 72 positioned in the inlet flue is arranged at the tail end of the chute, a material blocking plate 8 used for slowing down the fluorine-containing alumina or the alumina is respectively arranged in the inlet flue and the uptake flue, and the material blocking plate is positioned below the alumina feeder or the circulating feeder, a guide plate 9 used for changing the flow direction of the flue gas is arranged in the separator, and the guide plate is positioned at the outlet of the separator, so that the fluorine-containing alumina carried by the flue gas can roll down to the material returning box along the guide plate under the action of gravity after impacting the guide plate.
An embodiment 4 of an aluminum electrolysis flue gas purification feeding device comprises an uptake flue 4, a dust remover 5 communicated with the uptake flue, a separator 2 positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a return box 6 used for collecting fluorine-containing alumina separated by the separator, an inlet flue 1 used for conveying flue gas to the uptake flue, a circulating feeder 7 used for conveying fluorine-containing alumina in the return box into the uptake flue, and an alumina feeder 3 used for conveying alumina into the uptake flue, wherein the circulating feeder comprises a chute 71 communicated with the return box and used for making the fluorine-containing alumina move downwards by using gravity, a feeding pipe 72 positioned in the inlet flue is arranged at the tail end of the chute, a material blocking plate 8 used for slowing down the fluorine-containing alumina or the alumina is respectively arranged in the inlet flue and the uptake flue, and the material blocking plate is positioned below the alumina feeder or the circulating feeder, the separator is internally provided with a guide plate 9 used for changing the flow direction of the flue gas, the guide plate is positioned at the outlet of the separator, so that the fluorine-containing alumina carried by the flue gas can roll down to the material returning box along the guide plate under the action of gravity after impacting the guide plate, the separator comprises an annular separation cavity 21, one end of the separation cavity is communicated with the inlet flue, and the other end of the separation cavity is communicated with the uptake flue.
An embodiment 5 of an aluminum electrolysis flue gas purification feeding device comprises an uptake flue 4, a dust remover 5 communicated with the uptake flue, a separator 2 positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a return box 6 used for collecting fluorine-containing alumina separated by the separator, an inlet flue 1 used for conveying flue gas to the uptake flue, a circulating feeder 7 used for conveying fluorine-containing alumina in the return box into the uptake flue, and an alumina feeder 3 used for conveying alumina into the uptake flue, wherein the circulating feeder comprises a chute 71 communicated with the return box and used for making the fluorine-containing alumina move downwards by using gravity, a feeding pipe 72 positioned in the inlet flue is arranged at the tail end of the chute, a material blocking plate 8 used for slowing down the fluorine-containing alumina or the alumina is respectively arranged in the inlet flue and the uptake flue, and the material blocking plate is positioned below the alumina feeder or the circulating feeder, be equipped with the guide plate 9 that is used for changing the flue gas flow direction in the separator, the guide plate is located the separator export and makes fluorine-containing aluminium oxide that the flue gas carried roll to the return bin along the guide plate under the effect of gravity after striking the guide plate, the separator includes annular disengagement chamber 21, disengagement chamber one end and import flue intercommunication, the other end and uptake flue intercommunication, the return bin is equipped with the discharge tube way 10 that is used for discharging fluorine-containing aluminium oxide, the dust remover end is equipped with draught fan 11 in order to form the negative pressure environment at the dust remover end, the filling tube has two at least.
In other embodiments, the material returning box comprises a storage cavity and a discharge cavity, alumina enters the storage cavity after reacting with flue gas with lower concentration, and a chute of the circulating feeder is communicated with the storage cavity so as to add the fluorine-containing alumina in the storage cavity into the inlet flue; the fluorine-containing alumina added into the inlet flue reacts with the flue gas with higher concentration, then is separated by the separator and then falls to the discharge cavity along the guide plate, and the discharge pipeline is communicated with the discharge cavity so as to discharge the fluorine-containing alumina in the discharge cavity.
When in use, high-concentration flue gas generated by aluminum electrolysis enters the aluminum electrolysis flue gas purification feeding device through the inlet flue, reacts with fluorine-containing alumina added by the circulating feeder and brings the fluorine-containing alumina to the separator, the reacted fluorine-containing alumina is separated from the flue gas through the arranged separator, the flue gas enters the uptake flue, and the separated fluorine-containing alumina returns to the return bin; in the ascending flue, because the ascending flue is communicated with the dust remover, low-concentration flue gas formed after adsorption reaction with fluorine-containing alumina reacts with alumina added by the alumina feeder and enters the dust remover together, the fluorine-containing alumina formed after secondary adsorption reaction is filtered by the dust remover and then discharged, and the discharged fluorine-containing alumina enters the return box and is finally added into the ascending flue by the circulating feeder to react with high-concentration flue gas to complete the whole process.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The aluminum electrolysis flue gas purification feeding device comprises an uptake flue, a dust remover communicated with the uptake flue, a separator positioned in the uptake flue and used for separating fluorine-containing alumina from flue gas, a return box used for collecting the fluorine-containing alumina separated by the separator, an inlet flue used for conveying the flue gas to the uptake flue, a circulating feeder used for conveying the fluorine-containing alumina in the return box to the uptake flue, and an alumina feeder used for conveying the alumina to the uptake flue, and is characterized in that the circulating feeder comprises a chute communicated with the return box and used for enabling the fluorine-containing alumina to move downwards by using gravity, and a feeding pipe positioned in the inlet flue is arranged at the tail end of the chute.
2. The aluminum electrolysis flue gas purification feeding device according to claim 1, wherein a material blocking plate for slowing down the descending speed of fluorine-containing alumina or alumina is arranged in each of the inlet flue and the uptake flue, and the material blocking plate is positioned below the alumina feeder or the circulating feeder.
3. The aluminum electrolysis flue gas purification and feeding device according to claim 2, wherein a guide plate for changing the flow direction of the flue gas is arranged in the separator, and the guide plate is positioned at the outlet of the separator, so that the fluorine-containing alumina carried by the flue gas can roll down to the return box along the guide plate under the action of gravity after impacting the guide plate.
4. The aluminum electrolysis flue gas purification charging device according to claim 3, wherein the separator comprises an annular separation chamber, one end of the separation chamber is communicated with the inlet flue, and the other end is communicated with the uptake flue.
5. The aluminum electrolysis flue gas purification charging device according to claim 4, wherein the return tank is provided with a discharge pipe for discharging fluorine-containing alumina.
6. The aluminum electrolysis flue gas purification charging device according to claim 5, wherein the end of the dust remover is provided with an induced draft fan to form a negative pressure environment at the end of the dust remover.
7. The aluminum electrolysis flue gas purification charging device according to claim 6, wherein there are at least two charging pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669092.7U CN211227371U (en) | 2019-10-08 | 2019-10-08 | Aluminum electrolysis flue gas purification feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669092.7U CN211227371U (en) | 2019-10-08 | 2019-10-08 | Aluminum electrolysis flue gas purification feeding device |
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| Publication Number | Publication Date |
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| CN211227371U true CN211227371U (en) | 2020-08-11 |
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| CN201921669092.7U Active CN211227371U (en) | 2019-10-08 | 2019-10-08 | Aluminum electrolysis flue gas purification feeding device |
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| CN (1) | CN211227371U (en) |
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