CN202148044U - Variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in solar industry - Google Patents
Variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in solar industry Download PDFInfo
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- CN202148044U CN202148044U CN201120259390U CN201120259390U CN202148044U CN 202148044 U CN202148044 U CN 202148044U CN 201120259390 U CN201120259390 U CN 201120259390U CN 201120259390 U CN201120259390 U CN 201120259390U CN 202148044 U CN202148044 U CN 202148044U
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Abstract
The utility model relates to a material pipeline pneumatic conveying device, in particular to a variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in the solar industry. The pneumatic conveying device comprises a conveying tank and a terminal material silo; metallic silicon powder is fed from the feed opening of the conveying tank; a discharge opening of the conveying tank is connected to the terminal material silo through a material conveying pipeline; the variable-pressure dense-phase pneumatic conveying device further comprises a compressed air source, a negative-pressure plug-flow formation device and a positive-pressure plug-flow formation device; the negative-pressure plug-flow formation device is connected to the discharge opening of the conveying tank; the positive-pressure plug-flow formation device is connected to a conveying pipeline in front of the terminal material silo; the outlet of the negative-pressure plug-flow formation device is connected with the inlet of the positive-pressure plug-flow formation device; and the output end of the compressed air source is respectively connected with the conveying tank, the negative-pressure plug-flow formation device and the positive-pressure plug-flow formation device through air pipes. Through the variable-pressure dense-phase pneumatic conveying device, material (such as metallic silicon powder) which cannot be conveyed in the dense-phase manner formerly can be conveyed in the dense-phase manner, which has great significance for improving the whole automation level of the polycrystalline silicon production process, and broadens the range of material pneumatically conveyed in the dense-phase manner. Therefore, the pneumatic conveying device has the advantages of high conveying concentration, high reliability, energy conservation, stability and reliability in operation, large conveying force, and strong suitability for the change of material property.
Description
Technical field
The utility model relates to the material pipe Pneumatic conveyer, a kind of specifically solar industry metallic silicon power transformation dense-phase pneumatic conveying device.
Background technology
Feed metal silica flour in the solar industry belongs to the Class B combustible, and hardness reaches 7 grades of Mohs, bulk density 1.2-1.5t/m
3, the meta particle diameter reaches 350-400 μ m, is that a kind of exemplary particles is thick, bulk density is big, high abradability material.According to traditional classical pipeline strength Conveying Theory, the pneumatic conveying mode that material is suitable for adopting is with material residing zone decision in the Zenz binary phase diagraml.Metallic silicon power is in the PC3 zone in the Zenz phasor, be in this regional material and can only adopt dilute phase to carry.Be characterized as high flow rate and suspend and carry and dilute phase is carried, delivery pressure is low, flow velocity is high, carry exert oneself little, can produce sharp wear to equipment.Metallic silicon power is carried as adopting dilute phase, carries at a high speed to cause load transfer device to wear and tear fast, in actual Engineering Projects, once occurs 3-7 days just with delivery duct and the worn out case of valve.Simultaneously because dilute phase is carried is to adopt high flow rate to carry, will make material and pipeline high-speed friction and cause the silica flour temperature build-up, because silica flour belongs to the Class B combustible, adopt the potential safety hazard of dilute phase conveying very big.Therefore, silica flour is carried and be not suitable for to dilute phase, adopts existing prior art devices can't realize the strength conveying of silica flour.At present the raw material silica flour in the production of polysilicon technology from the raw material warehouse to material handling the reaction vessel charging hopper; Adopt the artificial mechanical lifting method that combines; Not only labour intensity is big for this mode, labor productivity is low, and poor working environment, potential safety hazard are also very outstanding.
The utility model content
The utility model technical matters to be solved is; Shortcoming to above prior art existence; A kind of solar industry metallic silicon power transformation dense-phase pneumatic conveying device is proposed; Broken through traditional material pipe strength and carried the limitation that adopts single power, made to comprise that the material that particle is thick, bulk density is big, abradability is strong of metallic silicon power also can adopt Dense Phase Pneumatic Conveying.
The technical scheme that the utility model solves above technical matters is:
Solar industry metallic silicon power transformation dense-phase pneumatic conveying device comprises transfer pot and terminal material storehouse, and metallic silicon power is from the inlet point input of transfer pot, and the discharging opening of transfer pot is connected to material storehouse, terminal through feeding pipe; Comprise that also compressed gas source, negative pressure become the bolt device and just be pressed into the bolt device; Negative pressure becomes the bolt device to be connected on the discharging opening of transfer pot; Just being pressed into the bolt device is connected on the one section feeding pipe before of material storehouse, terminal; The outlet that negative pressure becomes the bolt device connects the import that just is being pressed into the bolt device through feeding pipe, the output of compressed gas source through each road tracheae be connected to transfer pot respectively, negative pressure becomes the bolt device and just is being pressed into the bolt device.
Like this; The utility model with pressure gas as transmitting power; Become in the bolt device to form vacuum in negative pressure, make material particles get into pipeline smoothly, in the pipeline material negative pressure become the bolt device with the combined action that just is being pressed into the bolt device under be combined and be transported to the terminal after processing closely knit material bolt and expect the storehouse.This shows; The utility model adopts the power of pressure gas as convey materials; Pressure gas will form negative pressure and malleation composite power after introducing this device; Carry out the pipeline strength and carry to be lower than material suspended velocity, high concentration, broken through traditional material pipe strength and carried the limitation that adopts single power, make to comprise that the material that particle is thick, bulk density is big, abradability is strong of metallic silicon power also can adopt Dense Phase Pneumatic Conveying.For the production of polysilicon technology in the solar industry, use this technique device and can realize the conveying of raw material metallic silicon power, feed in the whole production technology, and the comprehensive automation of reaction residue conveying.
The technical scheme that the utility model further limits is:
Aforesaid solar industry metallic silicon power transformation dense-phase pneumatic conveying device, negative pressure become the outlet of bolt device to be connected to feeding pipe through the dilatation section that one section caliber increases gradually, are connected to by feeding pipe and just are pressed into the bolt device.Help negative pressure material bolt that negative pressure becomes the outlet of bolt device and mix with the malleation that just is pressed into the bolt device and form transition material bolt through the dilatation section is set.
Aforesaid solar industry metallic silicon power transformation dense-phase pneumatic conveying device, the tracheae that compressed gas source is connected to transfer pot is provided with two-way, wherein one the road be connected to transfer pot top pressurize, another road is connected to the middle part of transfer pot and carries out fluidisation.Through top and the middle part that the two-way tracheae is connected to transfer pot respectively is set, the negative pressure that more helps fluidisation limit, material limit is pressed to the transfer pot discharging opening becomes the bolt device.
The beneficial effect of the utility model is: the utility model makes some be not suitable for adopting the close material of carrying mutually (like metallic silicon power) also can adopt close conveying mutually originally; For production of polysilicon technology, the integrated automation level that improves production technology is significant.The utility model becomes the bolt dense-phase pneumatic conveying device as a kind of transformation, has following significantly technological merit:
⑴ widened the material scope that can adopt Dense Phase Pneumatic Conveying: be similar to the material that this particle diameter of metallic silicon power is thick, bulk density is big, abradability is strong; By traditional pipeline strength Conveying Theory and be not suitable for adopting and closely carry mutually, because this type material air penetration property is strong, flowing power is poor; Become under the bolt mode in tradition; Owing to there being the contradiction that is prone between stifled and the one-tenth bolt, cause to form actv. material bolt, thereby can't adopt close conveying mutually.Transformation Cheng Shuanmi carries then mutually and solves these problems well, makes these transport say so so-called " difficult material " for the pipeline strength and also can adopt close conveying mutually well.
⑵ transportation concentration height, good reliability, energy-conservation: average delivery pressure reaches about the 4.0bar, reach as high as 4.5bar (under the same terms, the delivery pressure of dilute phase system is below 1.0bar).Delivery pressure is high to mean that delivery speed is low on the one hand, and this is highly beneficial to equipment and pipeline abrasionproof, and equipment and pipe wear are very little, have improved the service life of equipment and pipeline effectively; On the other hand, the delivery pressure height means that also transportation concentration is high, carries material-gas ratio up to 32kg/kg (under the same terms, dilute phase delivery system material-gas ratio is about 8kg/kg), and therefore, transport efficiency is very high.Simultaneously, the delivery pressure height means that also to carry gas consumption and energy consumption lower.Compare with the dilute phase air-transport system, conveying energy consumption reduces more than 70%, compares with traditional Dense Phase Pneumatic Conveying system, and conveying energy consumption reduces more than 20%.
⑶ stable, reliable, carries and exert oneself greatly, strong to the variation comformability of material rerum natura.
Description of drawings
Fig. 1 is the connection scheme drawing of the utility model.
Fig. 2 is the connection scheme drawing of an application example of the utility model.
The specific embodiment
Embodiment 1
Present embodiment provides a kind of solar industry metallic silicon power transformation dense-phase pneumatic conveying device; Structure is as shown in Figure 1; Comprise transfer pot 9 and material storehouse 10, terminal, metallic silicon power drops into from the inlet point 11 of transfer pot 9, and the discharging opening 12 of transfer pot 9 is connected to material storehouse 10, terminal through feeding pipe 8; Comprise that also compressed gas source 13, negative pressure become bolt device 1 and just be pressed into bolt device 2; Negative pressure becomes bolt device 1 to be connected on the discharging opening 12 of transfer pot 9; Just be pressed into bolt device 2 and be connected on the one section feeding pipe before of material storehouse, terminal 10, negative pressure becomes the outlet of bolt device 1 to connect the import that just is being pressed into bolt device 2 through feeding pipe 8.The output of compressed gas source 13 is divided into four the tunnel; The first via is connected to the top of transfer pot 9 through tracheae 4; The second the tunnel is connected to the middle part of transfer pot 9 through tracheae 5, and Third Road is connected to negative pressure through tracheae 6 and becomes bolt device 1, the four tunnel to be connected to through tracheae 7 just to be pressed into bolt device 2.Negative pressure becomes the outlet of bolt device 1 to be connected to feeding pipe 8 through the dilatation section 14 that one section caliber increases gradually, is connected to by feeding pipe 8 and just is pressed into bolt device 2.
The transformation of present embodiment becomes bolt dense-phase pneumatic conveying device operational process following: pressure gas gets into transfer pot 9 → tracheae 4 and tracheae 5 through tracheae 4,5,6 three road tracheae lines and negative pressure is pressed on fluidisation limit, material limit becomes bolt device 1 → tracheae 6 that pressure gas is introduced negative pressure to become bolt device 1 to form negative pressure; The positive pressure force that negative pressure and tracheae 4 and 5 form is seen material off transfer pot 9 and is formed negative pressure bolt → tracheaes 7 and drop into after just be pressed into bolt device 2 and form dilatation section 14 that malleation → negative pressure bolts become bolt device 1 back through negative pressure and just be pressed into bolt device 2 and mix and form transition material bolt → transition material bolt and be transported to and just be pressed into bolt device 2 when neighbouring, receives just to be pressed into the closely knit material bolt → material of barotropic gas effect → formation that bolt device 2 draws and is transported to the terminal with close phase pattern and expects storehouse 10.
An application example of present embodiment is as shown in Figure 2, is that the transformation dense-phase pneumatic conveying device is arranged between former feed bin and the reaction vessel, and adopting compressed nitrogen, compression hydrogen according to arts demand is that power is transported to reaction vessel with silica flour.For the recycling of reaction residue, be that the transformation dense-phase pneumatic conveying device is arranged between reaction vessel and the scrubber, adopting compressed nitrogen is that power will react residual thing and be transported to the scrubber cycling and reutilization.
The utility model can be realized the Dense Phase Pneumatic Conveying of the material that particle is thick, bulk density is big; Be applicable to the Dense Phase Pneumatic Conveying of materials such as agstone in the coarse particle flying dust that produces because of the faulty coal that uses ash-rich in feed metal silica flour in the solar industry, the coal-burning power plant, economizer flying dust, the sulfur removal technology, coal dust; The Dense Phase Pneumatic Conveying of materials such as the PP in oil, the chemical engineering industry, PE, PVC, PTA, and the Dense Phase Pneumatic Conveying of material such as the aluminium powder in the metallurgical industry, copper powder.The utility model can realize that particle is thick, bulk density is big, high abradability material be lower than the particle floating velocity, high concentration is close carries mutually.Delivery pressure is up to more than the 4bar in the raw material metallic silicon power Dense Phase Pneumatic Conveying in solar industry for the utility model, and the conveying material-gas ratio is up to 32kg/kg.The utility model is compared with existing prior art devices; Broken through the material scope that can adopt Dense Phase Pneumatic Conveying; For the production of polysilicon technology in the solar industry, use the automation that the utility model can realize that raw material metallic silicon power conveying in the whole production technology, feed and reaction residue are carried, thereby effectively improve the automatization level of production system; Alleviate labor intensity of operating personnel significantly and improve working environment; Improve production technology reliability of operation, safety effectively, increased substantially the service life of conveying, feeding device, can reduce the energy consumption of mass transport simultaneously significantly.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. solar industry metallic silicon power transformation dense-phase pneumatic conveying device comprises that inlet point is used to drop into the transfer pot and the material storehouse, terminal of metallic silicon power, and the discharging opening of said transfer pot is connected to material storehouse, said terminal through feeding pipe; It is characterized in that: comprise that also compressed gas source, negative pressure become the bolt device and just be pressed into the bolt device; Said negative pressure becomes the bolt device to be connected on the discharging opening of said transfer pot; The said bolt device that just is being pressed into is connected on the one section feeding pipe before of material storehouse, said terminal; The outlet that said negative pressure becomes the bolt device connects the said import that just is being pressed into the bolt device through feeding pipe, the output of said compressed gas source through each road tracheae be connected to transfer pot respectively, negative pressure becomes the bolt device and just is being pressed into the bolt device.
2. solar industry metallic silicon power transformation dense-phase pneumatic conveying device as claimed in claim 1; It is characterized in that: said negative pressure becomes the outlet of bolt device to be connected to said feeding pipe through the dilatation section that one section caliber increases gradually, is connected to the said bolt device that just is being pressed into by said feeding pipe.
3. according to claim 1 or claim 2 solar industry metallic silicon power transformation dense-phase pneumatic conveying device; It is characterized in that: the tracheae that said compressed gas source is connected to transfer pot is provided with two-way; Wherein one the road be connected to said transfer pot top pressurize, another road is connected to the middle part of said transfer pot and carries out fluidisation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259390U CN202148044U (en) | 2011-07-21 | 2011-07-21 | Variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in solar industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259390U CN202148044U (en) | 2011-07-21 | 2011-07-21 | Variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in solar industry |
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| CN202148044U true CN202148044U (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120259390U Expired - Fee Related CN202148044U (en) | 2011-07-21 | 2011-07-21 | Variable-pressure dense-phase pneumatic conveying device for metallic silicon powder in solar industry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612914A (en) * | 2013-11-28 | 2014-03-05 | 中国中煤能源集团有限公司 | Conveying device and cooling system for high-temperature powdered semi-coke |
| CN109878805A (en) * | 2018-06-28 | 2019-06-14 | 姜广斌 | With pneumatic conveying acquisition, clean, the method and device thereof of dry solids |
-
2011
- 2011-07-21 CN CN201120259390U patent/CN202148044U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612914A (en) * | 2013-11-28 | 2014-03-05 | 中国中煤能源集团有限公司 | Conveying device and cooling system for high-temperature powdered semi-coke |
| CN103612914B (en) * | 2013-11-28 | 2016-07-27 | 中国中煤能源集团有限公司 | The conveyer device of High temperature powder semi-coke and cooling system |
| CN109878805A (en) * | 2018-06-28 | 2019-06-14 | 姜广斌 | With pneumatic conveying acquisition, clean, the method and device thereof of dry solids |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20130721 |