KR101579134B1 - Apparatus for Manufacturing High Purity Nano-Powder - Google Patents

Apparatus for Manufacturing High Purity Nano-Powder Download PDF

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Publication number
KR101579134B1
KR101579134B1 KR1020150094458A KR20150094458A KR101579134B1 KR 101579134 B1 KR101579134 B1 KR 101579134B1 KR 1020150094458 A KR1020150094458 A KR 1020150094458A KR 20150094458 A KR20150094458 A KR 20150094458A KR 101579134 B1 KR101579134 B1 KR 101579134B1
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KR
South Korea
Prior art keywords
powder
tank
air
cyclone
reaction tank
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KR1020150094458A
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Korean (ko)
Inventor
정종선
김형규
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주식회사쎄인텍
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Publication of KR101579134B1 publication Critical patent/KR101579134B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/20—Use of vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2202/00—Treatment under specific physical conditions
    • B22F2202/17—Treatment under specific physical conditions use of centrifugal or vortex forces

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The present invention relates to an apparatus to manufacture high purity nanopowder comprising a cyclone type filter device to remove a blockage phenomenon of a vacuum unit due to powder mixed in the air discharged to form a vacuum condition in a reaction tank in order to manufacture high purity ceramic powder. The apparatus of the present invention comprises: the reaction tank (100) which includes a rotary stirring device (200) inside thereof, manufacturing powder by chemical reaction by mixing and stirring a plurality of gases injected through a gas injection hole (101) of an upper part, and has a powder discharge hole (102) on a lower part and an air ventilation hole (104) to form a vacuum on a side; a storage tank (300) to receive and store the powder from the power discharge hole (102) of the reaction tank (100); a cyclone tank (410) to firstly filter the powder mixed in the air by being connected to the air ventilation hole (104) of the reaction tank (100); and a cyclone filter tank (430) to secondly filter the powder by being connected to the cyclone tank (410) in series. As such, the apparatus effectively removes the powder mixed in the air discharged through an air ventilation line.

Description

[0001] Apparatus for Manufacturing High Purity Nano-Powder [0002]

The present invention relates to an apparatus for producing nano powder, and more particularly, to a method and apparatus for producing a nano powder by using a cyclic method for effectively removing clogging of a vacuum means by powder mixed with air discharged to form a vacuum condition in a reaction tank, The present invention relates to a high-purity nano-powder producing apparatus having a filtration apparatus of the present invention.

Various methods such as chemical vapor phase synthesis, plasma chemical synthesis, chemical precipitation, hydrothermal synthesis, electrical dispersion reaction, combustion synthesis and sol-gel synthesis have been developed and used as methods for obtaining nanoceramic powders. Each method has advantages and disadvantages and it must be selected and applied to the process and application. In general, it is preferable to use a method which is high in purity and which can easily adjust the particle size and grain crystal and can be produced at low cost. As a conventional technique for synthesizing a polymer nanoceramic powder by a chemical vapor synthesis (CVS) method in which a raw material gas is stirred in a reaction tank at a constant temperature and pressure to form a powder, -0076930 discloses a process for producing high purity particulate silicon, wherein high purity particulate silicon is used as a " seed " to form and heat a flow state within the reactor, followed by introduction of a high purity silicon containing gas, A pyrolysis reaction occurs on the seed surface and the high-purity particulate silicon grows larger and larger so that they can not float and fall, thereby obtaining a silicon powder.

However, since the purity of the particulate silicon formed from the reaction of the injected gas in the reactor chamber is greatly affected by the pressure among the various conditions of the reactor chamber, it is necessary to pull the air in the reactor chamber sufficiently to lower the pressure sufficiently to obtain a high- have. In general, the pressure in the reactor chamber for synthesizing high purity powder should be maintained below 300 torr. In order to achieve the low-pressure condition, the powder generated in the chamber during the discharge of the air from the chamber to the outside is mixed with the discharged air and discharged, so that the vacuum generating device can smoothly discharge the air while filtering the air There is a need.

Published Patent No. 10-2011-0076930 (Published July 6, 2011)

An object of the present invention is to provide a method for producing high purity nano powder by connecting a cyclone tank and a cyclone filter tank in series to an air discharge line for forming a vacuum condition of a reaction tank, Purity nano powder generating apparatus capable of solving the problem of failure and inoperability of the generating apparatus.

It is another object of the present invention to provide a high-purity nano powder production apparatus having a rotary stirring device including a fixed air supply pipe, a rotary air supply pipe, a stirring blade opening, and a pipe tightening unit inside a reaction tank to produce high purity nano powder by a vapor- .

Other objects of the present invention can be achieved by the detailed description of the present invention described with reference to the accompanying drawings.

In order to achieve the above object, the apparatus for producing high-purity nano-powder according to the present invention includes a rotating stirring device 200 and mixes and agitates a plurality of gases injected through a gas inlet 101 at an upper part thereof, A reaction tank 100 in which a powder discharge port 102 is formed on the lower side and an air discharge port 104 for vacuum formation is formed on the side of the powder discharge port 102, A cyclone tank 410 connected to the air outlet 104 of the reaction tank 100 for primarily filtering the powder mixed with the air and a circulating tank 410 connected in series to the cyclone tank 410, And a cyclone filter tank 430 for filtering the powder secondarily and the powder to be filtered in the cyclone tank 410 and the cyclone filter tank 430 is conveyed to the storage tank 300.

In the present invention, one or more of the cyclone tanks 410 are connected in parallel, and a powder collecting tank 410 for collecting the powder filtered at the cyclone tank 410 is disposed at the lower end of the cyclone tank 410, (420).

In the present invention, the rotary stirring apparatus 200 further includes a fixed air supply pipe 210 extending downward from the upper portion of the reaction tank 100 to supply compressed air, a lower end of the fixed air supply pipe 210, A first extension 232 extending in the horizontal direction from the lower end of the rotary air supply pipe 220 and a second extension 232 extending from the first extension 220 in a horizontal plane, And a second extension portion 234 that is bent and extended to form an angle with the fixed air supply pipe 210 and the rotary air supply pipe 220 and a pipe 230 for fastening the fixed air supply pipe 210 and the rotary air supply pipe 220 to each other. And the fixed air supply pipe 210 may receive the compressed air from the outside of the reaction tank 100 and may receive the compressed air through the rotary air supply pipe 220, ), The stirring blade openings 230 and the rotary air supply pipe 220 can be rotated by the compressed air injected through the air outlet 231 of the stirring blade opening 230.

The stirring blade openings 230 may be formed by two branches symmetrically branched from the lower end of the rotating air supply pipe 220. The rotating stirring device 200 may be formed by bending And a plate-shaped connecting member 236 may be further provided at a portion where the connecting member 236 is connected.

In addition, the present invention further includes a powder suction attraction preventing partition wall 108 having a cylindrical shape whose inner diameter is narrowed downward toward the inside of the reaction tank 100, and the air discharge opening 104 is formed in the powder absorption barrier wall 108 And the inner wall of the reaction tank 100. The reaction tank 100 may be provided at the side of the reaction tank 100 so that air can be sucked from the space between the outer surface of the reaction tank 100 and the inner wall of the reaction tank 100.

According to the high-purity nano powder production apparatus of the present invention, powder mixed with air is effectively removed by the cyclone tank and the cyclone filter tank connected to the air outlet formed on the side of the reaction tank, thereby eliminating clogging of the air discharge line, The air discharged to the discharge port is discharged naturally, so that the degree of vacuum in the reaction tank can be maintained at an optimum condition for generating powder, and failure of the air pump by the powder can be prevented.

1 is an overall system configuration diagram of a high purity nano powder production apparatus according to an embodiment of the present invention;
2 is an exploded perspective view showing the internal structure of the reaction tank 100 in the high purity nano powder production apparatus according to one embodiment of the present invention;
3 is a view showing a configuration of a rotation stirring apparatus 200 installed inside a reaction tank of a high purity nano powder production apparatus according to one embodiment of the present invention; And
FIG. 4 is a partially cutaway cross-sectional view (a) and a partially cutaway perspective view (b) showing a state in which a powder suction preventing barrier is installed inside a reaction tank of a high-purity nano powder production apparatus according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

1 is an overall system configuration diagram of a high purity nano powder production apparatus according to an embodiment of the present invention. Referring to FIG. 1, the apparatus for producing high purity nano powder according to the present invention comprises a reaction tank 100, a storage tank 300, a cyclone tank 410, and a cyclone filter tank 420 as main components.

The reaction tank 100 includes a rotating agitation device 200 and a plurality of gas injected through an upper gas injection port 101 (shown as a plurality of injection ports 112, 114 and 116 in FIG. 2) Are mixed and stirred to produce a powder by chemical reaction. A powder outlet 102 is formed in the lower part of the container, and an air outlet 104 for forming vacuum is formed on the side of the container.

The storage tank 300 receives and stores the powder from the powder outlet 102 formed at the lower end of the reaction tank 100. The transfer of the powder from the powder discharge port 102 to the storage tank 300 is performed by driving the powder transfer pump 304.

The cyclone tank 410 is connected to the air outlet 104 of the reaction tank 100 to primarily filter powder mixed with air.

Cyclone is a kind of cyclone that generally descends in a spiral form of a fluid containing dust while moving the dust contained in the fluid to the inner wall of the container by centrifugal force and drops the fluid, The dust separator being configured to receive the dust.

Compared to other centrifugal force appliances that have a rotating blade in the device and mechanically give centrifugal force to the particles, this device has the advantage that there is no moving part in the main body.

Generally, the cyclone dust collector includes a body composed of a cylindrical portion and a bottom conical portion, and an inlet tube (shown as 412 in the figure) is inserted in the tangential direction above the cylindrical portion, and an outlet tube Is installed to be inserted into the upper surface, and a collecting box (corresponding to the powder collecting tank 420 in the figure) may be installed at the lower end of the conical portion and below the collecting box. The air stream including the powder enters the cylindrical portion in the tangential direction in the inlet tube and descends along the cylindrical portion and the conical portion along the swirling flow. During the descent, the powder receives the centrifugal force and is pushed to the inner wall of the main body, And collected by a dust collecting box through a dust collecting box.

The present invention further includes a cyclone filter tank (320) in addition to the cyclone tank (410) for filtering the powder mixed with air discharged through the air outlet (104). That is, a cyclone filter tank 430 including a filter inside the vessel is connected in series to the cyclone tank 410 to filter the powder secondarily. The cyclone filter tank 430 is equipped with a filter at the center of the vessel in order to filter even the fine dust rising in the vessel in the vessel in addition to the cyclone type dust collecting mechanism of the cyclone tank 410. In general, the filter mounted at the center of the cyclone filter tank 430 is a bag filter. By spraying filter clean gas along the air pulsing line 438 through the upper opening of the bag filter, And an air pulsing device capable of removing dust accumulated on the outer surface. Finally, the air whose powder is removed through the outlet pipe 436 of the cyclone filter tank 430 is discharged to the outside by the operation of the air discharge pump 435.

The powder produced in the reaction tank of the present invention is mainly a ceramic powder, and in order to produce a ceramic powder of high purity, the inside of the reaction tank should generally be in a vacuum state free from other air or impurities. That is, it is very important to keep the three gases in a vacuum state in the reaction tank during the powder production reaction process. Also, when the powder produced in the reaction tank 100 is conveyed in contact with air, 100 and the transfer line between the storage tanks 300 need to be kept in a vacuum state.

In the present invention, a vacuum pump is installed to maintain the interior of the reaction tank in vacuum to produce high-purity nano powder. The vacuum pump is disposed at the rear end of the cyclone tank and the cyclone filter tank, So that the discharge pressure can be kept constant and the risk that the powder flows into the vacuum pump together with the air and the vacuum pump is broken can be prevented.

Further, in order to produce high-purity nano powder, a nitrogen gas pressurized state may be used instead of a vacuum state, in addition to a method of maintaining the inside of the tank, the powder transfer line, and the air discharge line for producing powders in a vacuum state. In order to attain the nitrogen gas pressurized state, a process of continuously injecting nitrogen into the reaction tank 100 only under all the conditions described in the present invention may suffice.

The powder to be filtered in the cyclone tank 410 and the cyclone filter tank 430 is transferred to the storage tank 300. The relatively large powders filtered from the cyclone tank 410 are not transferred to the cyclone filter tank 430 but accumulate and accumulate due to their own weight and the powder transferred to the cyclone filter tank 430 is relatively small in size The fine particles are filtered by the filter 432 inside the vessel and accumulated on the outer surface of the filter 432 to be agglomerated and eventually accumulated in the cyclone tank 410 in such a manner as to accumulate the powder. The powder thus accumulated should be used as high-purity powder such as powder to be directly transferred to the storage tank 300 through the lower powder discharge port 102 of the reaction tank 100. Therefore, the powder accumulated between the reaction tank 100 and the storage tank 300 To be transferred to the storage tank (300).

In addition, in the present invention, the cyclone tank 410 may include one or more connected in parallel, and a powder collecting tank 410 for collecting the powder filtered at the cyclone tank 410 at a lower end of the cyclone tank 410, (420).

FIG. 2 is an exploded perspective view showing the internal structure of the reaction tank 100 in the high purity nano powder production apparatus according to one embodiment of the present invention, and FIG. 3 is a cross- Fig. 2 is a view showing a configuration of a rotation stirring apparatus 200 provided inside a reaction tank of a rotary stirring apparatus. Referring to FIGS. 2 and 3, in one embodiment of the present invention, the rotary stirring apparatus 200 includes a fixed air supply pipe 210 (shown in FIG. 2) extending downward from the upper portion of the reaction tank 100 for supplying compressed air, A rotary air supply pipe 220 suspended downward from the lower end of the fixed air supply pipe 210 and rotatably coupled to the lower end of the fixed air supply pipe 210, And a second extension portion 234 bent and extended at an angle with the first extension portion 232 on a horizontal plane. The fixed-air introduction pipe 230 and the fixed- And a pipe coupling part 240 for coupling the rotary air supply pipe 220 to each other. The fixed air supply pipe 210 receives compressed air from the outside of the reaction tank 100, Through the supply pipe 220 The stirring blade open pipe 230 and the rotary air supply pipe 220 are rotated by the compressed air injected through the air outlet 231 of the stirring blade opening 230 .

The stirring blade openings 230 may be formed by two branches symmetrically branched from the lower end of the rotating air supply pipe 220. The rotating stirring device 200 may be formed by bending And a plate-shaped connecting member 236 may be further provided at a portion where the connecting member 236 is connected.

4 is a partially cutaway cross-sectional view (a) and a partially cutaway perspective view (b) showing a state in which a powder suction preventing barrier is installed inside a reaction tank of a high-purity nano powder production apparatus according to another embodiment of the present invention. Referring to FIG. 4, the present invention may further include a powder suction preventing barrier 108 in the form of a cylinder having an inner diameter narrower downward in the reaction tank 100. The air outlet 104 may be formed on the side of the reaction tank 100 so that air can be sucked from a space between the outer surface of the powder suction preventing barrier 108 and the inner wall of the reaction tank 100. The air discharge port 104 may be configured such that the air discharge nozzle 124 is installed through the side wall of the reaction tank 100. The air discharge nozzle 124 is connected to the powder suction prevention barrier 108, And the reaction tank (100). Accordingly, the inner space of the reaction tank 100 is separated into the upper space and the lower space 107 by the partition wall 108 for preventing powder attraction, and the powder is formed by the above-described rotary stirring apparatus 200 in the upper space The dust is dropped into the lower space 107 through the lower end hole 109 of the partition wall 108 for preventing powder attraction by gravity and is discharged through the powder discharge port 102. The partition wall 108 allows the air to pass through the air outlet 104 It is possible to prevent the phenomenon that the powder is sucked together along the air flow. The prevention of the primary powder suction to the air outlet 104 makes it possible to more effectively perform the secondary powder filtration process by the above-described cyclone tank and cyclone filter tank.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various modifications can be made by those skilled in the art. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It will not.

Claims (6)

A plurality of gas injected through the upper gas inlet 101 is mixed and stirred to generate powder by a chemical reaction, and a powder outlet 102 is provided in the lower part of the rotary stirring apparatus 200, A reaction tank 100 in which an air outlet 104 for forming air is formed;
A storage tank 300 for transferring and storing the powder from the powder outlet 102 of the reaction tank 100;
A cyclone tank 410 connected to the air outlet 104 of the reaction tank 100 for primarily filtering powder mixed with air;
A cyclone filter tank 430 connected in series to the cyclone tank 410 to filter the powder secondarily;
Lt; / RTI >
Wherein the powder to be filtered in the cyclone tank (410) and the cyclone filter tank (430) is transferred to the storage tank (300).
The method according to claim 1,
One or more of the cyclone tanks 410 are connected in parallel and a powder collection tank 420 for collecting the powder filtered at the cyclone tank 410 is installed at the lower end of the cyclone tank 410 Purity nano powder. The method according to claim 1,
The rotary stirring apparatus 200 includes:
A fixed air supply pipe 210 extending downward from an upper portion of the reaction tank 100 to supply compressed air;
A rotary air supply pipe 220 suspended downward from the lower end of the fixed air supply pipe 210 and rotatably coupled thereto;
A primary extension 232 extending in a horizontal direction at a lower end of the rotary air supply pipe 220 and a secondary extension 234 extending and bent at an angle with the primary extension 232 on a horizontal plane, One or more agitating blade openings (230); And
A tube fastening part 240 for fastening the fixed air supply pipe 210 and the rotary air supply pipe 220 to each other;
Lt; / RTI >
The fixed air supply pipe 210 receives compressed air from the outside of the reaction tank 100 and supplies the compressed air to the stirring blade opening 230 through the rotating air supply pipe 220, Wherein the stirring blade opening (230) and the rotating air supply pipe (220) are rotated by compressed air injected through the air outlet (231). The method of claim 3,
Wherein the stirring blade openings (230) are formed by two branches symmetrically formed from the lower end of the rotating air supply pipe (220). 5. The method of claim 4,
Wherein the rotation stirring device (200) further comprises a plate-like connecting member (236) at a bent portion of the stirring blade opening (230). The method according to claim 1,
The powder suction suction preventing partition wall 108 is formed in the reaction tank 100 so that its inner diameter becomes narrower toward the lower side of the reaction tank 100. The air discharge opening 104 is in contact with the outer surface of the powder suction- Is formed on the side of the reaction tank (100) so that air can be sucked from a space between the inner walls of the tank (100).
KR1020150094458A 2015-07-02 2015-07-02 Apparatus for Manufacturing High Purity Nano-Powder KR101579134B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210085786A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Dust collecting system
KR20210085797A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Conyrolling method for dust collecting system
KR20210085781A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Multi-centrifugal dust collecting system
KR102628754B1 (en) 2023-02-14 2024-01-24 뉴테크에너지 (주) Silicon sludge airflow drying device and silicon nanopowder manufacturing method using same
CN117984463A (en) * 2024-04-01 2024-05-07 江苏君华特种高分子材料股份有限公司 Material conveying system for PEEK (polyether-ether-ketone) plates and working method thereof

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KR20100003513A (en) * 2008-07-01 2010-01-11 대우조선해양 주식회사 Mixing & pouring device of compound
KR20110076930A (en) 2008-09-16 2011-07-06 써니사이드 테크놀로지스, 인코포레이티드 Reactor and method for producing high-purity granular silicon
KR20120029191A (en) * 2010-09-16 2012-03-26 고등기술연구원연구조합 High pressure supply system of a liquefied and solidified mixed specimen
KR20130086425A (en) * 2012-01-25 2013-08-02 황채익 Manufacturing apparatus of nano-sized powder
KR20140083191A (en) * 2012-12-24 2014-07-04 재단법인 포항산업과학연구원 Crystallization apparatus

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
KR20100003513A (en) * 2008-07-01 2010-01-11 대우조선해양 주식회사 Mixing & pouring device of compound
KR20110076930A (en) 2008-09-16 2011-07-06 써니사이드 테크놀로지스, 인코포레이티드 Reactor and method for producing high-purity granular silicon
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KR20140083191A (en) * 2012-12-24 2014-07-04 재단법인 포항산업과학연구원 Crystallization apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210085786A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Dust collecting system
KR20210085797A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Conyrolling method for dust collecting system
KR20210085781A (en) 2019-12-31 2021-07-08 주식회사 올스웰 Multi-centrifugal dust collecting system
KR102628754B1 (en) 2023-02-14 2024-01-24 뉴테크에너지 (주) Silicon sludge airflow drying device and silicon nanopowder manufacturing method using same
CN117984463A (en) * 2024-04-01 2024-05-07 江苏君华特种高分子材料股份有限公司 Material conveying system for PEEK (polyether-ether-ketone) plates and working method thereof

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