KR20160122327A - Collect Filter Using SUS-Al Wire and Method For Manufacturing the Collect Filter - Google Patents

Collect Filter Using SUS-Al Wire and Method For Manufacturing the Collect Filter Download PDF

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Publication number
KR20160122327A
KR20160122327A KR1020150051898A KR20150051898A KR20160122327A KR 20160122327 A KR20160122327 A KR 20160122327A KR 1020150051898 A KR1020150051898 A KR 1020150051898A KR 20150051898 A KR20150051898 A KR 20150051898A KR 20160122327 A KR20160122327 A KR 20160122327A
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South Korea
Prior art keywords
wire
sus
filter
aluminum
dust
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KR1020150051898A
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Korean (ko)
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김민정
이동복
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성균관대학교산학협력단
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Priority to KR1020150051898A priority Critical patent/KR20160122327A/en
Publication of KR20160122327A publication Critical patent/KR20160122327A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

The present invention relates to a dust collection filter and a manufacturing method thereof. The manufacturing method of a dust collection filter prepares an aluminum-coated SUS-Al wire on a stainless wire, and manufactures a dust collection filter using the same and using a weaving and/or braiding method.

Description

Technical Field [0001] The present invention relates to a dust filter using a SUS-Al wire and a manufacturing method thereof.

The present invention relates to a dust filter and a method of manufacturing the same. More particularly, the present invention relates to a dust-collecting filter formed by using SUS-Al wire without a welded portion and a method of manufacturing the same.

The coal gasification combined cycle power generation (IGCC) system is a clean coal utilization technology that can significantly reduce air pollutants such as NO x , SO x , and CO 2 dust compared to existing pulverized coal power generation systems.

The IGCC system gasifies the pulverized coal with oxygen in a gasifier operating at high temperature and high pressure to produce mainly CO and H 2 and removes the dust and sulfur components generated at this time from the dust collector and the desulfurizer, In this process, complex syngas such as H 2 S and SO 2 is generated.

Conventionally, ceramic filters have been used, but due to the nature of the materials, it is difficult to predict by the formation of dust layers, and dust and depletion performance changes due to changes in physical / chemical properties of particulate matter are extreme, And damage due to thermal shock was frequent.

However, when the ceramic filter is replaced with a metal filter, H 2 S generated in a reducing atmosphere during the combustion of coal in the complex syngas generated in the IGCC system reacts with the filter material to generate lethal sulfur compounds on the surface of the metal filter, As the speed is increased, the replacement period of the metal filter is shortened to one to two years. In particular, FeS formed by reacting Fe with H 2 S is a non-stoichiometric sulfide which is bulky, porous, and poor in adhesiveness, which causes problems such as pipe clogging that blocks the pipe itself in the downstream process facility.

Accordingly, a new type of filter and a method of manufacturing the filter are required to replace the conventional filter.

Korean Patent No. 10-0366378 "Filter composed of porous metal thin film" Korean Patent No. 10-0605367 "Metal thin film filter for dust collection"

It is an object of the present invention to provide a dust filter using SUS-AL wire and a manufacturing method thereof.

Another object of the present invention is to provide a dust filter which does not form a welded portion by using a SUS-Al wire by using a weaving and / or braiding method, and a method of manufacturing the same.

Another object of the present invention is to provide a dust filter and a method of manufacturing the same that can simplify the manufacturing process by using SUS-Al wire.

Another object of the present invention is to provide a dust filter having excellent corrosion resistance by using stainless steel wire coated with aluminum and a manufacturing method thereof.

The above and other objects of the present invention can be achieved by a dust-collecting filter according to the present invention and a manufacturing method thereof.

The dust-collecting filter according to an embodiment of the present invention includes an SUS-Al wire preparation step in which aluminum is coated on a stainless wire and a filter part formation step in which a filter part is formed using the SUS-Al wire.

The SUS-Al wire preparation step may include a coating step of hot dipping the stainless wire into aluminum melt.

In the coating step, the stainless wire may be hot dipped in an aluminum melt at 600 to 750 ° C for 0.1 to 5 minutes, and the aluminum melt may be rotated or vibrated.

The method may further include a cooling step of cooling the SUS-Al wire after the coating step and a reheating step of reheating the cooled SUS-Al wire.

The cylindrical filter can be formed without using a welding portion by using one or more methods of weaving and braiding the SUS-Al wire in the filter portion forming step.

A plurality of cylindrical filters having diameters different from each other may be superimposed on each other to form the filter portion.

The dust-collecting filter according to an embodiment of the present invention includes a filter portion formed of SUS-Al wire coated with aluminum on a stainless wire.

The filter portion may be cylindrical in which the SUS-Al wire is formed without using a welding portion using one or more of weaving and braiding.

Preferably, the diameter of the stainless wire is 0.8 to 1.2 mm, the thickness of the aluminum is 30 to 100 mu m, the stainless wire is 90 to 99.7 wt%, and the aluminum is 0.3 to 10 wt%.

It is also preferable that an Fe 3 Al, FeAl, FeAl 2 compound layer is formed on the surface of the SUS-Al wire.

The present invention provides a dust-collecting filter having excellent corrosion resistance by using SUS-Al wire and does not form a welded portion by using a SUS-Al wire by using a weaving and / or braiding method, It is possible to simplify the dust collecting filter and its manufacturing method.

1 is a perspective view of a dust filter according to an embodiment of the present invention.
2 is a cross-sectional view of a dust filter according to an embodiment of the present invention.
3 is a view showing a wire used in a dust filter according to an embodiment of the present invention.
4 is a photograph showing peeling and peeling phenomenon when an aluminum coating layer is formed by a vapor deposition coating method.
5 is a flowchart of a method of manufacturing a dust filter according to an embodiment of the present invention.
6 is a flowchart of a method of manufacturing a dust filter according to another embodiment of the present invention.
7 is a flowchart of a dust filter manufacturing method according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dust collecting filter and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description, only parts necessary for understanding the structure of the dust filter and the manufacturing method thereof according to the embodiment of the present invention will be described, and descriptions of other parts may be omitted so as not to disturb the gist of the present invention.

In addition, terms and words used in the following description and claims should not be construed to be limited to ordinary or dictionary meanings, but are to be construed in a manner consistent with the technical idea of the present invention As well as the concept.

1 shows a dust collecting filter according to an embodiment of the present invention.

The dust-collecting filter 100 according to the present invention is characterized by forming a filter using the SUS-Al wire 10.

The cylindrical filter portion 20 can be formed without welding portions by forming a filter using a woven and / or braided method as shown in FIG.

In the case of the conventional dust collecting filter used in the IGCC system, a plate filter is not rounded and the corners are welded to each other to form a cylindrical filter portion. However, the grain size of the filter microstructure changes due to the heat applied in the welding process , Which causes deterioration of the mechanical properties of the filter and generation of cracks due to thermal stress and creep.

However, in the dust filter according to the present invention, the cylindrical filter portion is formed by using the SUS-Al wire without using the weaving portion and / or the braiding method, so that the mechanical property deterioration and the crack occurrence can be suppressed.

2, the filter 20 may be formed by superimposing a plurality of cylindrical filters 21, 22, 23 on the dust filter according to the present invention. At this time, the number of superimposed cylindrical filters is 3 to 6, especially 5, but it can be appropriately adjusted depending on the desired filter performance. Also, each of the nested cylindrical filters may be woven to have pore sizes of different sizes depending on their location and function when made in a weaving and / or braiding process.

As shown in FIG. 3, a wire for manufacturing a dust filter according to an embodiment of the present invention uses a stainless steel (SUS) wire 11 coated with aluminum (Al).

When stainless steel wire without aluminum coating is used, FeS, FeO, Fe 2 O 3 and Fe 3 O 4 are formed by reaction with S and O contained in the complex syngas generated in the IGCC system. When used, Al 2 S 3 , Al 2 O 3 are formed, which are more protective than FeS and have increased corrosion resistance.

The stainless steel wire 11 has a diameter (PHI) of 0.8 mm to 1.2 mm and is made of aluminum coating layer 12 (12) to satisfy the physical characteristics as a dust collecting filter and the manufacturing method using weaving and / ) Is preferably 30 占 퐉 to 100 占 퐉.

SUS316L may be used as the stainless steel wire 11. The weight ratio of the SUS-Al wire 10 is preferably 90 to 99.7 wt% for the stainless steel wire 11 and 0.3 to 10 wt% for the aluminum coating layer 12 .

However, when aluminum is coated on stainless steel by a coating method such as evaporation, peeling and lifting of the coating layer may occur as shown in FIG. 4 even if the thickness is only 0.5 μm. Therefore, in order to coat aluminum on the stainless steel wire, it is preferable to coat the stainless steel wire using a hot dipping method in which a stainless steel wire is dipped in a molten aluminum melt.

When the SUS-Al wire 10 is formed by hot dipping the stainless steel wire into the molten aluminum, the Fe 3 Al, FeAl and FeAl 2 intermetallic compound layers are formed on the surface of the SUS-Al wire to oxidize or oxidize steel or stainless steel, It has excellent corrosion resistance against sulphidation corrosion prevention.

The description of manufacturing the SUS-Al wire used in the production of the dust filter according to the embodiment of the present invention by the hot dipping method will be described later in more detail in the following description of the dust filter manufacturing method according to the embodiment of the present invention do.

A flowchart of a method for manufacturing a dust filter according to an embodiment of the present invention is shown in Fig.

As shown in FIG. 5, the dust-collecting filter according to an embodiment of the present invention may be manufactured by a SUS-Al wire preparing step S100 and a filter forming step S200.

First, the SUS-Al wire preparing step S100 is a step of preparing a SUS-Al wire 10 coated with aluminum (Al) on a stainless steel (SUS) wire as described above.

Next, the SUS-Al wire 10 prepared is woven and / or braided to form a filter part having a desired shape (S200).

Various shapes of filter portions can be formed according to the requirements of the system in which the filter portion is to be used. In order to be used in the IGCC system, the cylindrical filter portion 20 as shown in FIG. 1 can be formed.

Further, in order to realize a desired filter performance in forming the filter portion, the filter portion 20 may be formed by superimposing a plurality of cylindrical filters 21, 22, and 23 having different diameters as shown in FIG. 2, Depending on the position and function of the cylindrical filter, it can be densely or wiggled to have pore sizes of different sizes.

The dust filter according to an embodiment of the present invention manufactured by the above steps does not require any welding process to form a filter portion having a desired shape because it forms the filter portion by weaving and / or braiding, It is possible to prevent the change of the grain size of the filter microstructure generated by the heat applied in the process, the cracking due to the thermal stress and the creep effect, and the like.

In addition, since it is formed of the SUS-Al wire (1), it has excellent corrosion resistance to oxidation and sulphide corrosion even in a mixed gas atmosphere containing S and O. Step (S100) of preparing such SUS- Reference will be made in more detail as follows.

To form the SUS-Al wire 10, the stainless steel wire 11 is first drawn (S110). At this time, for example, SUS316L can be used as the stainless steel, and the diameter (PHI) of the stainless wire is formed to be 0.8 mm to 1.2 mm. The thickness of the aluminum coating layer may become too thick in the aluminum coating step S120 to be described later, so that the overall strength of the SUS-Al wire 10 may be lowered, Since the SUS-Al wire 10 may be cut off in step S200, the diameter? Of the stainless wire is preferably set to 0.8 mm to 1.2 mm.

Next, the withdrawn stainless wire 11 is coated with aluminum (S120). It is preferable that the thickness of the aluminum coating layer 12 coated in the aluminum coating step S120 is 30 占 퐉 to 100 占 퐉 and the weight ratio of the SUS-Al wire 10 is 90 to 99.7% by weight of the stainless steel wire 11, The aluminum coating layer 12 is preferably adjusted to be 0.3 to 10% by weight.

Any coating method capable of forming the aluminum coating layer 12 in the thickness of 30 to 100 mu m on the stainless steel wire 11 may be used. However, in order to manufacture the dust collecting filter according to the embodiment of the present invention, A hot dipping method in which a stainless wire is dipped and coated can be preferably used.

At this time, in order to satisfy the thickness condition of the SUS-Al wire for manufacturing the dust filter according to the embodiment of the present invention, the stainless steel wire 11 is hot-dipped in an aluminum molten bath at 600 ° C to 750 ° C for 0.1 minute to 5 minutes The Fe 3 Al, FeAl, and FeAl 2 intermetallic compound layer is formed on the surface of the SUS-Al wire in the process of hot dipping the stainless steel wire into the molten aluminum, and is excellent in preventing oxidation and sulfidation corrosion of steel or stainless steel in a gas atmosphere It has corrosion resistance.

However, even if the aluminum coating layer 12 is formed to a desired thickness on the stainless steel wire 11 by the hot dipping method, coating with a uniform thickness is not easy. In this case, it is preferable that a rotor capable of rotating or vibrating the molten aluminum is installed inside the molten metal, or is rotated or vibrated by the molten metal to uniformly form the aluminum coating layer on the stainless wire. At this time, the thickness of the aluminum coating layer can be adjusted according to the rotation speed.

Also, in the method of fabricating the dust filter according to another embodiment of the present invention, the SUS-Al wire cooling step (S130) and the SUS-Al wire reheating step (S140) may be further performed after the aluminum coating step (S120).

The SUS-Al wire cooling step S130 is a step of gradually cooling the SUS-Al wire 10 taken out from the aluminum molten metal in the aluminum coating step S120 and cooling the SUS-Al wire 10 at a temperature of about room temperature The SUS-Al wire is cooled (air-cooled).

Thereafter, the SUS-Al wire is again heated (S130). Such a reheating treatment is carried out, for example, by heating a SUS-Al wire cooled in a heating furnace at a temperature of 200 DEG C to 400 DEG C for 30 minutes to 5 hours, and inducing inward diffusion of aluminum through reheat treatment The aluminum coating layer 12 can be further stabilized.

The dust-collecting filter and the manufacturing method thereof according to the present invention have been described with reference to specific embodiments. It is to be understood, however, that the invention is not limited to those precise embodiments, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed.

10: SUS-Al wire 11: Stainless wire
12: Aluminum coating layer 20: Filter part
100: dust filter

Claims (12)

A SUS-Al wire preparation step in which stainless steel wire is coated with aluminum; And
Forming a filter portion using the SUS-Al wire;
Wherein the dust collecting filter comprises: The method according to claim 1,
Wherein the SUS-Al wire preparation step includes a coating step of hot dipping the stainless wire into aluminum melt. 3. The method of claim 2,
Wherein the coating step comprises hot dipping the stainless steel wire into aluminum melt at 750 to 900 DEG C for 0.1 to 3 minutes. 3. The method of claim 2,
Wherein the aluminum molten metal is rotated or vibrated in the coating step. 3. The method of claim 2,
The SUS-Al wire preparation step may be performed after the coating step
A cooling step of cooling the SUS-Al wire; And
A reheating step of reheating the cooled SUS-Al wire;
Further comprising the steps of: 6. The method according to any one of claims 1 to 5,
Wherein the SUS-Al wire is woven and braided in the filter part forming step to form a cylindrical filter without using a welding part. The method according to claim 6,
Wherein a plurality of cylindrical filters having different diameters are overlapped to form a filter portion in the filter portion forming step. A dust filter comprising a filter portion formed of SUS-Al wire coated with aluminum on a stainless steel wire. 9. The method of claim 8,
Wherein the filter portion is formed of a SUS-Al wire without using a welding portion by using at least one of weaving and braiding. 9. The method of claim 8,
Wherein the stainless wire has a diameter of 0.8 to 1.2 mm and the aluminum has a thickness of 30 to 100 탆. 9. The method of claim 8,
Wherein the stainless steel wire is 90 to 99.7 wt%, and the aluminum is 0.3 to 10 wt%. The method according to any one of claims 8 to 11,
Wherein a Fe 3 Al, FeAl, FeAl 2 compound layer is formed on the surface of the SUS-Al wire.
KR1020150051898A 2015-04-13 2015-04-13 Collect Filter Using SUS-Al Wire and Method For Manufacturing the Collect Filter KR20160122327A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102544352B1 (en) * 2022-01-11 2023-06-15 동아대학교 산학협력단 Check valve for hydrogen gas

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100366378B1 (en) 2000-08-17 2003-01-09 주식회사 히스코 Filter using a thin metal film
KR100605367B1 (en) 2004-12-20 2006-07-31 재단법인 포항산업과학연구원 Metal thin-film filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100366378B1 (en) 2000-08-17 2003-01-09 주식회사 히스코 Filter using a thin metal film
KR100605367B1 (en) 2004-12-20 2006-07-31 재단법인 포항산업과학연구원 Metal thin-film filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102544352B1 (en) * 2022-01-11 2023-06-15 동아대학교 산학협력단 Check valve for hydrogen gas

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