CN202061492U - Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace - Google Patents
Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace Download PDFInfo
- Publication number
- CN202061492U CN202061492U CN 201120079203 CN201120079203U CN202061492U CN 202061492 U CN202061492 U CN 202061492U CN 201120079203 CN201120079203 CN 201120079203 CN 201120079203 U CN201120079203 U CN 201120079203U CN 202061492 U CN202061492 U CN 202061492U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- filter
- polycrystalline silicon
- cylindrical shell
- type filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a tail gas silicon slag filtering device for a polycrystalline silicon reduction furnace, and aims at resolving the problems that silicon slags produced during the production process of polycrystalline silicon are accumulated at a valve and abrade a valve core so that the sealing performance of the valve is reduced. A sinking type filter is positioned at a tail gas pipe opening of a base plate, and a Y-shaped filter for secondary filter is arranged between the tail gas pipe opening of the base plate and a tail gas pipeline valve. The tail gas silicon slag filtering device for the polycrystalline silicon reduction furnace is ingenious in conception, simple in structure, high in reliability, easy to disassemble and assemble, convenient to maintain, capable of effectively avoiding the damage of pipelines and devices due to the silicon slags, good in filtering effect and remarkable in deslagging effect.
Description
Technical field
The utility model relates to a kind of polycrystalline silicon reducing furnace equipment, particularly a kind of polycrystalline silicon reducing furnace tail gas white residue filter.
Background technology
In order to realize the sustainable development of the energy and environment, solar energy is subjected to paying close attention to widely as reproducible clean energy resource, and solar cell market is enlarged rapidly.Polysilicon is as the essential industry raw material of solar energy industry, and the improvement of its production technology is significant.
In the reduction process of polysilicon, silicon rod can occur and lodge unusually.Because the fragility of silicon after lodging takes place, can produce white residue.The white residue that produces drops in the exhaust pipe of furnace hearth plate, and along with the carrying out of reaction in furnace, the part white residue is brought to the position of valve in the pipeline, and piles up at the valve place simultaneously.Pile up white residue valve is blocked, thereby influence the discharge of tail gas, cause furnace pressure to raise, threaten the safety of factory.Because the hardness of silicon is 7, when valve carried out switch motion, the white residue that is deposited on the valve place can cause wearing and tearing to spool, destroyed the sealing property of valve, caused the leakage of tail gas.When reduction furnace was in nonproductive state, the pressure of exhaust pipe system was higher than furnace pressure, and the valve leak that tail gas can pass through to damage is in reduction furnace and in the environment on every side.Because tail gas is the highly acid medium, has severe corrosive, toxic and inflammable and explosive property, can cause equipment and Corrosion of Pipeline, causes for simultaneously the normal production of reduction factory building and have a strong impact on.
At present, polysilicon enterprise prevents the infringement of white residue by raising valve anti-wear performance.But because the hardness of silicon is very big, the method that improves the valve wearability can not effectively address this problem.Enterprise just needs to change a tail gas valve in daily production average half a year, has increased potential safety hazard and production cost.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of polycrystalline silicon reducing furnace with tail gas white residue filter, it adopts secondary filter, simple in structure, safe ready, reliability height.
A kind of polycrystalline silicon reducing furnace tail gas white residue filter, it is characterized in that: the tail gas mouth of pipe is provided with the sunk type filter on the chassis, is provided with y-type filter between the chassis tail gas mouth of pipe and exhaust pipe valve.
Described sunk type filter comprises cylindrical shell and filter screen, and described filter screen is fixed on an end of cylindrical shell, and the other end edge of described cylindrical shell is provided with flange.
Described cylindrical shell is provided with the hole.
Described cylindrical shell bottom becomes 30 degree angles with filter screen.
The inboard of described cylindrical shell is provided with reinforcement.
The filter screen order number of described y-type filter is 80 orders.
The utility model is removed the wherein bigger white residue of particle diameter at first by being arranged on the sunk type filter of the chassis tail gas mouth of pipe, and carries out secondary filter by the y-type filter that is arranged on before the exhaust pipe valve, removes the wherein less white residue of particle diameter.Owing to adopted the sunk type filter, it can utilize the cooling water of trying to get to the heart of a matter that filter screen is cooled off, and by being arranged on the flange on the cylindrical shell, realizes heat exchange, thereby avoids hot environment to damage the sunk type filter.By cascade filtration is set, can effectively reduce the infringement of filter residue to valve, prolong the service life of equipment, strengthen the security of reduction furnace, the generation of minimizing accident.
Before reduction furnace work, the sunk type filter is placed in the chassis tail gas mouth of pipe, y-type filter is arranged between the chassis tail gas mouth of pipe and the exhaust pipe valve.After reduction furnace is out of service, filter screen in the y-type filter and sunk type filter are taken out, pour out white residue wherein, clean up standby.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
(1) the utility model is simple in structure, is skillfully constructed, and is easy to disassembly and assembly, is convenient to safeguard;
(2) the utility model adopts the cascade filtration setting, can effectively avoid the wearing and tearing of white residue to valve, strengthens the security of reduction furnace, the generation of minimizing accident;
(3) adopt y-type filter in the utility model, the filter efficiency height, the slagging-off effect is obvious;
(4) the utility model adopts the sunk type filter, can utilize cooling water that device is cooled off, thereby reduces the damage of high temperature to the sunk type filter;
(5) body of the utility model tube bottom becomes 30 degree angles with filter screen, simultaneously the hole is set on cylindrical shell, can guarantee that on same cross section, the circulation area of loss is very little, thereby guarantees normally passing through of tail gas;
(6) low, the long service life of the utility model maintenance cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the front view of sunk type filter in the utility model.
Fig. 3 is the vertical view of sunk type filter in the utility model.
Mark among the figure: 1 is the sunk type filter, and 2 is y-type filter, and 1-1 is a cylindrical shell, and 1-2 is a filter screen, and 1-3 is a flange, and 1-4 is a reinforcement.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in the figure, a kind of polycrystalline silicon reducing furnace tail gas white residue filter, the tail gas mouth of pipe is provided with sunk type filter 1 on the chassis, is provided with y-type filter 2 between the chassis tail gas mouth of pipe and exhaust pipe valve.Described sunk type filter comprises cylindrical shell 1-1 and filter screen 1-2, and filter screen 1-2 is welded on the end of cylindrical shell 1-1, is provided with flange 1-3 at the other end edge of cylindrical shell 1-1.Cylindrical shell 1-1 is provided with the hole, is provided with reinforcement 1-4 in the inboard of cylindrical shell 1-1, and cylindrical shell 1-1 bottom becomes 30 degree angles with filter screen 1-2.The filter screen order number of described y-type filter 2 is 80 orders.
Sunk type filter 1 is placed in the chassis tail gas mouth of pipe by flange 1-3, and carries out exchange heat by the cooling water in flange 1-3 and the chassis, thereby prevents the damage of high temperature to sunk type filter 1.Cylindrical shell 1-1 bottom becomes 30 degree angles with filter screen 1-2, and cylindrical shell 1-1 is provided with the hole, can guarantee when satisfying filter effect the flow velocity of raising tail gas, the normal operation of assurance system.In the inboard of cylindrical shell 1-1 reinforcement 1-4 is set, the intensity that it can increase sunk type filter 1 prolongs its service life.The white residue that particle diameter is bigger is deposited on the sunk type filter 1, and the less white residue of particle diameter enters pipeline with tail gas.When tail gas passed through y-type filter 2, the less white residue of particle diameter was deposited on the y-type filter 2, thereby has guaranteed filter effect.
Before reduction furnace work, sunk type filter 1 is placed in the chassis tail gas mouth of pipe, y-type filter 2 is arranged between the chassis tail gas mouth of pipe and the exhaust pipe valve.After reduction furnace is out of service, sunk type filter 1 and y-type filter 2 are taken out, pour out white residue wherein, clean up standby.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a polycrystalline silicon reducing furnace is characterized in that: be provided with sunk type filter (1) at the chassis tail gas mouth of pipe, be provided with y-type filter (2) between the chassis tail gas mouth of pipe and exhaust pipe valve with tail gas white residue filter.
2. polycrystalline silicon reducing furnace according to claim 1 tail gas white residue filter, it is characterized in that: described sunk type filter (1), comprise cylindrical shell (1-1) and filter screen (1-2), described filter screen (1-2) is fixed on an end of cylindrical shell (1-1), and the other end edge of described cylindrical shell (1-1) is provided with flange (1-3).
3. polycrystalline silicon reducing furnace according to claim 2 tail gas white residue filter, it is characterized in that: described cylindrical shell (1-1) is provided with the hole.
4. polycrystalline silicon reducing furnace according to claim 2 is characterized in that: become 30 to spend angles with filter screen (1-2) bottom the described cylindrical shell (1-1) with tail gas white residue filter.
5. polycrystalline silicon reducing furnace according to claim 2 tail gas white residue filter, it is characterized in that: the inboard of described cylindrical shell (1-1) is provided with reinforcement (1-4).
6. polycrystalline silicon reducing furnace according to claim 1 tail gas white residue filter, it is characterized in that: the filter screen order number of described y-type filter (2) is 80 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120079203 CN202061492U (en) | 2011-03-24 | 2011-03-24 | Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120079203 CN202061492U (en) | 2011-03-24 | 2011-03-24 | Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202061492U true CN202061492U (en) | 2011-12-07 |
Family
ID=45055374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120079203 Expired - Fee Related CN202061492U (en) | 2011-03-24 | 2011-03-24 | Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202061492U (en) |
-
2011
- 2011-03-24 CN CN 201120079203 patent/CN202061492U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206398746U (en) | A kind of multipole magnetic fuel gas environmental protection energy-saving appliance | |
| CN104315896A (en) | Detachable heat exchanger for blast furnace slag flushing water | |
| CN202061492U (en) | Tail gas silicon slag filtering device for polycrystalline silicon reduction furnace | |
| CN211366978U (en) | Polycrystalline silicon reduction furnace and tail gas pipe group thereof | |
| CN202061491U (en) | Sinking type filter for polycrystalline silicon reduction furnace | |
| CN104001386A (en) | Dust filter | |
| CN201093918Y (en) | High efficiency self-cleaning plate heat exchanger | |
| CN102327708B (en) | A kind of dirt separator | |
| CN201419068Y (en) | Environment-protecting smoke exhaust system | |
| CN204268929U (en) | A kind of detachable heat exchanger for blast furnace slag quenching water | |
| CN103742900B (en) | A kind of Anti-abrasion water wall tube panel | |
| CN208071655U (en) | The double headers of gasification furnace fin panel casing | |
| CN202201743U (en) | Vertical water magnetizer | |
| CN202993184U (en) | Water-cooling central air outlet cylinder of cyclone separator | |
| CN205329077U (en) | Blast furnace slag flushing water waste heat recovery system | |
| CN201525769U (en) | Strong magnetic multifunctional water treatment device | |
| CN105444605A (en) | Impact-resistant fluoroplastic heat exchanger | |
| CN203642663U (en) | Shaft furnace anti-collision furnace wall and shaft furnace | |
| CN203375430U (en) | Anti-wear device of low-temperature economizer | |
| CN205537164U (en) | Flue gas waste heat recovery device for sintering machine | |
| CN209701800U (en) | Differential pressure type economizer fly ash carry device | |
| CN203704679U (en) | Afterheat colleting module arranged in main pumping flue of sintering machine | |
| CN210448289U (en) | Tail gas silicon slag filtering equipment for polycrystalline silicon reduction furnace | |
| CN203757700U (en) | Wear-resisting water cooling wall pipe screen | |
| CN202955685U (en) | Boiler furnace corner sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20200324 |