CN219174220U

CN219174220U - Industrial silicon refining furnace

Info

Publication number: CN219174220U
Application number: CN202320254773.7U
Authority: CN
Inventors: 王春保; 金芝; 林超
Original assignee: Anhui Shunda Environmental Technology Co ltd
Current assignee: Anhui Shunda Environmental Technology Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-13
Anticipated expiration: 2033-02-20

Abstract

The utility model discloses an industrial silicon refining furnace, and belongs to the technical field of refining furnaces. The industrial silicon refining furnace comprises a refining furnace body, wherein a refining silicon inner container is arranged in the refining furnace body, an annular heat flow cavity is arranged between the refining silicon inner container and the refining furnace body, a flow cavity partition is arranged between the annular heat flow cavities, and the refining silicon inner container is connected with the refining furnace body in a welded mode through the flow cavity partition. In order to solve the problem that the gas mixing device can be used for uniformly mixing chlorine, but the silicon material can not be reacted simultaneously if the condition of uneven heating exists, the waste of the materials is easy to occur, the refined silicon inner container is surrounded from the outside, then the silicon material in the refined silicon inner container is heated, the outside refining furnace body plays a role in heat preservation, the heat is prevented from being transmitted outwards, the inner container is covered completely by using the annular heating mode, the internal materials can be heated uniformly, and the situation that the silicon material cannot be fully contacted with the chlorine for reaction due to uneven heating is avoided.

Description

Industrial silicon refining furnace

Technical Field

The utility model relates to the technical field of refining furnaces, in particular to an industrial silicon refining furnace.

Background

Chinese patent publication No. CN216172072U discloses a gas mixing device of a refining furnace for industrial silicon processing, which is provided with a first motor and a first belt pulley. The structure such as a gear, an intake pipe and spiral pipe are mutually supported and are used, make spiral pipe and intake pipe's rotation opposite direction, are favorable to improving the mixing efficiency of oxygen and air, make quick homogeneous mixing of oxygen and air, through adding structure such as No. two motors, centrifugal wind wheel, circulation groove and breather pipe mutually support and use, are favorable to making the incomplete oxygen and air circulation of mixing mix, are convenient for improve the mixing effect of oxygen and air.

The method for refining industrial silicon by introducing chlorine gas has the advantages that impurities in crude silicon are removed by the action of both physical and chemical aspects, after the chlorine gas is introduced into liquid silicon, tiny slag particles in the silicon are more easily aggregated into large particles under the action of new-phase bubbles, the slag is separated from the liquid silicon by means of the difference of the density of slag and the liquid silicon, and the gas mixing device in the patent can be used for uniformly mixing the chlorine gas, but if the silicon material is heated unevenly, the reaction cannot be carried out simultaneously, and the waste of the material is easy to occur; therefore, the existing demand is not satisfied, and an industrial silicon refining furnace is proposed for this.

Disclosure of Invention

The utility model aims to provide an industrial silicon refining furnace, which utilizes an annular heating mode to realize full coverage of an inner container, so that internal materials can be heated uniformly, the phenomenon that the silicon materials cannot be fully contacted and reacted with chlorine due to uneven heating is avoided, and the problems in the prior art can be solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an industrial silicon refining furnace, includes the refining furnace body, the inside of refining furnace body is provided with the refining silicon inner bag, is provided with annular heat flow chamber between refining silicon inner bag and the refining furnace body, be provided with the flow chamber and cut off between the annular heat flow chamber, the refining silicon inner bag cuts off with refining furnace body welded connection through the flow chamber, the top of refining furnace body is provided with the vacuum pressure lid, and the surface of vacuum pressure lid is provided with the vacuum valve pipe, the bottom of refining furnace body is provided with the sediment bottom pipe, and the sediment bottom pipe extends to the inside of refining silicon inner bag, one side of vacuum pressure lid is provided with the air-vent valve body, and the air-vent valve body extends to the top of refining silicon inner bag.

Preferably, one side of the refining furnace body is provided with a heat-guiding pipe, the other side of the refining furnace body is provided with a heat-guiding pipe, and the heat-guiding pipe are both welded with the refining furnace body.

Preferably, the inside of leading-out heat flow pipe is provided with logical chlorine pipeline, leads to chlorine pipeline and refined silicon inner bag through flange joint, set up to the staggered structure between the leading-in heat flow pipe, leading-in heat flow pipe is the same with leading-out heat flow pipe structure.

Preferably, the heat-introducing flow pipe, the heat-discharging flow pipe and the annular heat flow cavity are all in through connection through a one-way converging opening.

Preferably, a pressure detection module is arranged on the outer side of the pressure regulating valve body, a refining cabin is arranged in the refined silicon liner, and a precipitation substrate is arranged at the bottom of the refining cabin.

Preferably, a heat conduction vertical plate is arranged on one side of the refining cabin, and the heat conduction vertical plate and the refined silicon liner are arranged into an integrated structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the refining silicon inner container is arranged in the refining furnace body, a plurality of annular heat flow cavities are designed between the refining silicon inner container and the furnace body, the adjacent annular heat flow cavities are not communicated, when refining, heat enters the annular heat flow cavities through a pipeline at one side, the refining silicon inner container is surrounded by the heat from the outside, and then the silicon material in the refining silicon inner container is heated, the outer refining furnace body plays a role in heat preservation, the heat is prevented from being transmitted outwards, the inner container is covered completely by utilizing an annular heating mode, and further the internal materials can be heated uniformly, so that the situation that the silicon material cannot be fully contacted and reacted with chlorine due to uneven heating is avoided;

2. according to the utility model, the heat conduction vertical plate can guide the heat emitted by the annular heat flow cavity into the central area of the liner, so that the peripheral silicon materials can be heated from inside to outside, and the heat conduction efficiency is improved.

Drawings

FIG. 1 is an overall front view of the present utility model;

FIG. 2 is a schematic view of the whole cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of the internal structure of a refined silicon liner of the present utility model;

fig. 4 is a schematic cross-sectional view of an annular heat flow chamber according to the present utility model.

In the figure: 1. refining a furnace body; 2. a chlorine introducing pipeline; 3. a pressure regulating valve body; 4. refining a silicon liner; 101. a vacuum pressure cap; 102. a slag discharging bottom pipe; 103. introducing a heat flow tube; 104. a heat-conducting pipe; 1011. a vacuum valve tube; 301. a pressure detection module; 401. an annular heat flow chamber; 402. a flow cavity partition; 403. precipitating the substrate; 404. a thermally conductive flap; 405. a refining cabin; 4011. a one-way flow-closing opening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, an embodiment of the present utility model is provided: the industrial silicon refining furnace comprises a refining furnace body 1, wherein a refining silicon inner container 4 is arranged in the refining furnace body 1, an annular heat flow cavity 401 is arranged between the refining silicon inner container 4 and the refining furnace body 1, a flow cavity partition 402 is arranged between the annular heat flow cavity 401, the refining silicon inner container 4 is welded with the refining furnace body 1 through the flow cavity partition 402, a vacuum pressure cover 101 is arranged at the top of the refining furnace body 1, a vacuum valve tube 1011 is arranged on the outer surface of the vacuum pressure cover 101, a slag bottom tube 102 is arranged at the bottom of the refining furnace body 1, the slag bottom tube 102 extends to the inside of the refining silicon inner container 4, a pressure regulating valve body 3 is arranged at one side of the vacuum pressure cover 101, and the pressure regulating valve body 3 extends to the upper part of the refining silicon inner container 4;

the refining furnace body 1 is internally provided with a refining silicon inner container 4, a plurality of annular heat flow cavities 401 are designed between the refining silicon inner container 4 and the furnace body, the adjacent annular heat flow cavities 401 are not communicated, when refining, heat enters the annular heat flow cavities 401 through a pipeline on one side, the refining silicon inner container 4 is surrounded from the outside, and then silicon materials in the refining silicon inner container 4 are heated, the outer refining furnace body 1 plays a role in heat preservation, heat is prevented from being transmitted outwards, the inner container is fully covered by utilizing an annular heating mode, and further, the materials in the inner container can be uniformly heated, and the situation that the silicon materials cannot fully contact and react with chlorine due to uneven heating of the silicon materials is avoided;

the pressure detection module 301 is arranged on the outer side of the pressure regulating valve body 3, the refining cabin 405 is arranged in the refined silicon inner container 4, the sedimentation substrate 403 is arranged at the bottom of the refining cabin 405, the heat conduction vertical plate 404 is arranged on one side of the refining cabin 405, and the heat conduction vertical plate 404 and the refined silicon inner container 4 are arranged into an integrated structure;

the pressure regulating valve body 3 is responsible for regulating and controlling the pressure value condition in the refined silicon inner container 4, avoiding the unbalance of the gas pressure in the inner container, and assisting the pressure regulating valve body 3 to perform constant control of the pressure through the pressure detection module 301;

the heat conduction vertical plate 404 can guide the heat emitted by the annular heat flow cavity 401 into the central area of the liner, so that the peripheral silicon materials can be heated from inside to outside, and the heat conduction efficiency is improved.

Referring to fig. 2-4, one side of a refining furnace body 1 is provided with an inlet heat flow pipe 103, the other side of the refining furnace body 1 is provided with an outlet heat flow pipe 104, the inlet heat flow pipe 103 and the outlet heat flow pipe 104 are both in welded connection with the refining furnace body 1, a chlorine-passing pipeline 2 is arranged in the outlet heat flow pipe 104, the chlorine-passing pipeline 2 is connected with a refining silicon liner 4 through a flange, the inlet heat flow pipes 103 are arranged into a staggered structure, the inlet heat flow pipe 103 and the outlet heat flow pipe 104 are identical in structure, and the inlet heat flow pipe 103, the outlet heat flow pipe 104 and an annular heat flow cavity 401 are all in through connection through a unidirectional confluence opening 4011;

the heat-introducing pipe 103 is responsible for introducing the hot air flow into the annular heat flow cavity 401, and then discharging the hot air flow through the heat-discharging pipe 104 on the other side, so that the heat circulation operation is realized, and the chlorine introducing pipe 2 is responsible for introducing chlorine into the refined silicon liner 4 to react with the silicon material.

The working principle is that silicon materials are placed into the refining silicon inner container 4, the refining silicon inner container 4 is installed in the refining furnace body 1, a plurality of annular heat flow cavities 401 are designed between the refining silicon inner container 4 and the furnace body, the adjacent annular heat flow cavities 401 are not communicated, when in refining, the heat flow guiding pipe 103 is responsible for guiding hot air into the annular heat flow cavities 401, and then the hot air is discharged through the heat flow guiding pipe 104 on the other side, so that thermal circulation operation is realized, the refining silicon inner container 4 is surrounded from the outside, the silicon materials in the refining silicon inner container 4 are further heated, meanwhile, the heat conducting vertical plates 404 can guide the heat emitted by the annular heat flow cavities 401 into the central area of the inner container, so that the peripheral silicon materials can be heated from the inside to the outside, the conduction efficiency of the heat energy is improved, the refining furnace body 1 on the outer side plays a role of heat preservation, the inner container is prevented from being transmitted outwards, the inner container is covered in a full mode by annular heating, and further, the internal materials can be uniformly heated, and the situation that the silicon materials cannot be fully contacted and reacted with chlorine is avoided due to uneven heating.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An industrial silicon refining furnace comprises a refining furnace body (1), and is characterized in that: the refining furnace comprises a refining furnace body (1), wherein a refining silicon inner container (4) is arranged in the refining furnace body (1), an annular heat flow cavity (401) is arranged between the refining silicon inner container (4) and the refining furnace body (1), a flow cavity partition (402) is arranged between the annular heat flow cavity (401), the refining silicon inner container (4) is in welded connection with the refining furnace body (1) through the flow cavity partition (402), a vacuum pressure cover (101) is arranged at the top of the refining furnace body (1), a vacuum valve pipe (1011) is arranged on the outer surface of the vacuum pressure cover (101), a slag discharge bottom pipe (102) is arranged at the bottom of the refining furnace body (1), the slag discharge bottom pipe (102) extends to the inside of the refining silicon inner container (4), a pressure regulating valve body (3) is arranged on one side of the vacuum pressure cover (101), and the pressure regulating valve body (3) extends to the upper portion of the refining silicon inner container (4).

2. An industrial silicon refining furnace as claimed in claim 1 wherein: one side of the refining furnace body (1) is provided with a heat-guiding flow pipe (103), the other side of the refining furnace body (1) is provided with a heat-guiding flow pipe (104), and the heat-guiding flow pipe (103) and the heat-guiding flow pipe (104) are both welded with the refining furnace body (1).

3. An industrial silicon refining furnace as claimed in claim 2 wherein: the inside of leading-out heat flow pipe (104) is provided with logical chlorine pipeline (2), leads to chlorine pipeline (2) and refined silicon inner bag (4) through flange joint, set up to the staggered structure between leading-in heat flow pipe (103), leading-in heat flow pipe (103) and leading-out heat flow pipe (104) structure are the same.

4. An industrial silicon refining furnace according to claim 3, characterized in that: the heat-leading-in heat flow pipe (103), the heat-leading-out heat flow pipe (104) and the annular heat flow cavity (401) are all in through connection through a one-way closed flow port (4011).

5. An industrial silicon refining furnace as claimed in claim 1 wherein: the pressure regulating valve is characterized in that a pressure detection module (301) is arranged on the outer side of the pressure regulating valve body (3), a refining cabin (405) is arranged in the refined silicon liner (4), and a precipitation substrate (403) is arranged at the bottom of the refining cabin (405).

6. An industrial silicon refining furnace as set forth in claim 5 wherein: one side of the refining cabin (405) is provided with a heat conduction vertical plate (404), and the heat conduction vertical plate (404) and the refined silicon liner (4) are arranged into an integrated structure.