KR101416604B1 - Unwoven fabric for high temperature air filtering - Google Patents
Unwoven fabric for high temperature air filtering Download PDFInfo
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- KR101416604B1 KR101416604B1 KR1020120125186A KR20120125186A KR101416604B1 KR 101416604 B1 KR101416604 B1 KR 101416604B1 KR 1020120125186 A KR1020120125186 A KR 1020120125186A KR 20120125186 A KR20120125186 A KR 20120125186A KR 101416604 B1 KR101416604 B1 KR 101416604B1
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- nonwoven fabric
- teflon
- fabric
- high temperature
- layer
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- 239000004744 fabric Substances 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 31
- 239000011521 glass Substances 0.000 claims abstract description 26
- 239000004809 Teflon Substances 0.000 claims abstract description 25
- 229920006362 Teflon® Polymers 0.000 claims abstract description 25
- 239000010410 layer Substances 0.000 claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 19
- 238000004080 punching Methods 0.000 claims abstract description 15
- 239000004760 aramid Substances 0.000 claims abstract description 14
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 14
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 6
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 7
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 29
- 239000000428 dust Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 14
- 229920000784 Nomex Polymers 0.000 abstract description 5
- 239000004763 nomex Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000002341 toxic gas Substances 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 description 14
- 239000002759 woven fabric Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229920006231 aramid fiber Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 229910052815 sulfur oxide Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyphenylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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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
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
- D04H1/4342—Aromatic polyamides
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
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- 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
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0618—Non-woven
Abstract
본 발명은 고온에서 발생되는 유해가스 분진을 제거하기 위한 고온용 기체필터용 부직포에 관한 것이다.
본 발명은 고온에서 발생되는 유해가스 분진을 제거하기 위한 백필터용 부직포로서, 메타 아라미드(Nomex) 단섬유와 폴리페닐린설파이드(PPS) 단섬유가 혼합된 표면층과 테프론 코팅된 글라스(glass)로 이루어진 직물 기포 (scrim)의 이면층을 물리적인 힘으로 결합시킨 2층 구조의 고온용 기체필터용 부직포 구성으로 이루어져 있다.
상기 본 발명은 2데니어의 압축된 메타 아라미드 단섬유와 2데니어의 폴리페닐린 설파이드를 약 5:5의 중량비율로 혼합하여 혼타면에 이은 개면과 일련의 성형 및 니들 펀칭을 이용한 결속을 행하여 얻어진 웹의 이면에 테프론 코팅된 저밀도 글라스 기포를 적층해서 니들 펀칭 등의 물리적인 결속공정을 행함으로써 얻어지게 된다.The present invention relates to a nonwoven fabric for a high-temperature gas filter for removing harmful gas dust generated at a high temperature.
The present invention relates to a nonwoven fabric for a bag filter for removing noxious gas dust generated at a high temperature, which comprises a surface layer in which meta-aramid (Nomex) short fibers and polyphenylene sulfide (PPS) staple fibers are mixed and a Teflon- Layer structure of a nonwoven fabric for a high-temperature gas filter in which a back layer of fabric bubbles is joined by a physical force.
In the present invention, 2 denier compressed meta-aramid staple fibers and 2 denier polyphenylene sulfide were mixed at a weight ratio of about 5: 5, and the resulting mixture was subjected to a binding process using a series of forming and needle punching operations A low density glass bubble coated with Teflon is laminated on the back surface of the web and a physical binding process such as needle punching is performed.
Description
본 발명은 고온에서 발생되는 각종 유해분진을 제거하는데 사용되는 백 필터용 부직포에 관한 것으로, 특히 고온 배출가스의 농도를 저농도로 유지시키는 한편 강한 유해가스와의 장시간 접촉에도 집진효율이 떨어지는 것이 방지된 가운데 효율적으로 배출가스 중의 유해분진을 제거할 수 있는 고온용 기체필터용 부직포에 관한 것이다.The present invention relates to a nonwoven fabric for a bag filter used for removing various harmful dusts generated at a high temperature, and more particularly to a nonwoven fabric for a bag filter which is capable of maintaining the concentration of the high temperature exhaust gas at a low concentration, To a non-woven fabric for a high-temperature gas filter capable of efficiently removing harmful dust in an exhaust gas.
일반적으로 조업공정 중에 가열이나 연소과정을 포함하는 각종 산업현장에서는 분진을 포함하는 배출가스가 발생하게 되고, 그러한 배출가스 중에 포함된 분진은 집진장치를 거치면서 배출가스 허용기준치에 부합하는 정도로 분진이 제거된 상태의 기체만이 대기중으로 배출되어 진다.Generally, in various industrial fields including heating and combustion processes during the operation process, exhaust gas containing dust is generated, and the dust contained in such exhaust gas passes through the dust collecting apparatus, Only the removed gas is discharged to the atmosphere.
이와 같은 배출가스 중에 포함된 분진을 집진 또는 제거하기 위한 집진설비로는 주로 백필터가 사용되고 있다. 최근에 이르러 환경에 대한 관심이 높아지고 대기환경에 대한 각종 기준이 강화됨에 따라 산업현장에서 발생되는 배출가스에 대한 분진의 허용기준치가 한층 엄격해지는 추세에 있다.A bag filter is mainly used as a dust collecting device for collecting or removing dust contained in such exhaust gas. Recently, due to increased interest in the environment and various standards for the atmospheric environment have been strengthened, the tolerance standard for dust emission from industrial sites is becoming more stringent.
한편, 제철소나 제강공장을 비롯한 시멘트 공장 등에서 발생되는 배출가스 를 비롯한 각종 화학공장이나 연소과정을 거쳐 나오는 배출가스는 온도 자체가 상대적으로 높고, 황산화물(SOx)이나 질소산화물(NOx) 등의 산,알칼리 분진이 포함되어 있기 때문에 이러한 배출가스의 정화에 사용되는 백필터 소재는 내열성, 내화학성, 고온 형태안정성 및 고밀도 구조 등의 품질특성이 요구되고 있다. On the other hand, exhaust gases emitted from various chemical plants and combustion processes including exhaust gas generated from steel mills, steel mills, cement factories, etc., are relatively high in temperature, and sulfur oxides (SOx) and nitrogen oxides And alkali dust, the bag filter material used for purifying such exhaust gas is required to have quality characteristics such as heat resistance, chemical resistance, high temperature shape stability and high density structure.
상기 고온의 배출가스 중에 포함된 유해분진 제거용 백필터 소재의 대표적인 일예로 1969년부터 건분진의 집진용으로 사용되고 있는 듀폰사의 노멕스(Nomex) 아라미드 섬유가 알려져 있다. 상기 노멕스 아라미드 섬유는 200℃ 정도의 가동환경에서도 지속적으로 사용할 수 있는 내열성을 지니고 있으며, 또한 그 이전에 사용되어 오던 폴리에스터와 아크릴에 비해 내화학성 및 고온에서의 형태 안정성도 우수하다는 장점이 있다.As a representative example of the dust filter material for removing harmful dust contained in the high-temperature exhaust gas, Nomex aramid fiber of DuPont which has been used for dust collection since 1969 is known. The Nomex aramid fiber has heat resistance that can be continuously used even in a moving environment of about 200 ° C, and has an advantage in that it has excellent chemical resistance and morphological stability at high temperature compared with polyester and acrylic which have been used before .
상기 노멕스 아라미드 섬유 이외의 고온용 백필터 소재로 테프론 불화탄소와 미세 유리섬유를 혼합해서 니들펀칭한 테페어(TEFAIRE, 상품명)와 유리섬유 등이 알려져 있다.As a high-temperature bag filter material other than the Nomex aramid fiber, TEFAIRE (trade name) and glass fiber, which are made by needle-punching a mixture of Teflon fluorocarbon and fine glass fiber, are known.
그러나, 상기 종래의 고온용 백필터 소재 섬유들은 가격이 상당히 비싸서 경제성면에서 문제점이 있으며, 최근에 한층 강화되고 또한 상향되고 있는 환경기준치 동향을 감안하는 경우, 향후에는 이들 소재를 원료로 하는 백필터의 경우에도 요구되는 품질특성에 부합하지 못하게 될 것으로 보여지기에, 한층 강화된 품질특성 요건을 만족시키면서도 경제성을 갖춘 새로운 고온용 기체필터용 부직포의 개발이 요망되고 있는 실정이다.However, the conventional high-temperature bag filter fabric fibers are very expensive and thus have a problem in terms of economy. In consideration of trends of environmental standard values which have been strengthened and upward recently, a bag filter It is desired to develop a new nonwoven fabric for a high-temperature gas filter having an economical efficiency while satisfying the requirements for further enhanced quality characteristics.
본 발명은 갈수록 엄격해지는 배출가스 허용기준치에 부합할 수 있는 고온 백필터용 부직포로서, 고온 노출환경에서도 형태안정성이 지속되며 황산화물이나 질소산화물 등의 유해가스 분진에 대한 포집성능이 장시간 유지되며 비용면에서 경제적인 고온용 기체필터용 부직포를 제공함에 발명의 목적을 두고 있다.The present invention is a nonwoven fabric for a high-temperature bag filter which can meet the increasingly stringent emission gas tolerance standard. The nonwoven fabric maintains its shape stability even in a high-temperature exposure environment and retains the trapping performance for harmful gas dusts such as sulfur oxides and nitrogen oxides for a long time, It is an object of the present invention to provide an economical nonwoven fabric for a high temperature gas filter.
본 발명의 상기 기술적 목적은, 메타 아라미드(Nomex) 단섬유와 폴리페닐린설파이드(PPS) 단섬유가 혼합된 표면층과 글라스(glass)로 이루어진 직물 기포(scrim)의 이면층을 물리적인 힘으로 결합시킨 2층 구조의 고온용 기체필터용 부직포에 의해서 달성된다. The technical object of the present invention is to combine the surface layer of meta-aramid (Nomex) short fibers with polyphenyl sulfide (PPS) short fibers and the back layer of a fabric bubble made of glass with physical force A non-woven fabric for a high-temperature gas filter having a two-layer structure.
상기 본 발명 고온용 기체필터용 부직포에서 표면층을 이루는 메타 아라미드단섬유와 폴리페닐린 설파이드 단섬유는 모두 내열성이 우수하여 고온 백필터의 소재섬유로 사용되어 오고 있는 것으로, 본 발명에서는 2데니어의 압축된 메타 아라미드 단섬유와 2데니어의 폴리페닐린 설파이드를 중량비로 6:4 내지 4:6, 바람직하기로는 5:5의 비율로 혼합하여 혼타면에 이은 개면과 일련의 성형 및 니들 펀칭을 이용한 결속을 행하여 얻어진 웹의 이면에 글라스 기포를 적층해서 니들 펀칭 등의 물리적인 결속공정을 행함으로써 메타 아라미드와 폴리페닐린 설파이드의 표면층과 글라스 직물기포의 이면층으로 이루어진 2층 구조의 고온 백필터용 부직포가 얻어지게 된다.The meta-aramid short fibers and the polyphenyl sulfide short fibers constituting the surface layer in the nonwoven fabric for a high-temperature gas filter according to the present invention are both excellent in heat resistance and have been used as the material fibers of the high temperature bag filter. In the present invention, Aramid staple fiber and 2-denier polyphenyl sulfide were mixed at a weight ratio of 6: 4 to 4: 6, preferably 5: 5, and the surface after the horn face was subjected to a series of forming and bonding using needle punching And then subjected to a physical binding process such as needle punching by laminating glass bubbles on the back surface of the obtained web to obtain a two-layer structure nonwoven fabric for a high temperature bag filter composed of a surface layer of meta-aramid and polyphenyl sulfide and a back layer of glass fabric bubbles Is obtained.
상기 본 발명의 고온용 기체필터용 부직포에서 표면층을 이루는 섬유 중 하나인 메타 아리미드 단섬유는 우수한 내열성에 기인하여 200℃ 이상의 고온에서도 안정적인 형태유지가 지속되며 내화학성 및 내습성이 우수하고 고밀도 구조로서 미세분진 집진 성능이 우수하여 고온환경에서의 건분진 제거용 백필터 소재의 대표적인 하나로 알려져 있다.The meta-aramide staple fiber, which is one of the fibers constituting the surface layer in the nonwoven fabric for a high-temperature gas filter of the present invention, is stable in shape maintenance even at a high temperature of 200 ° C or higher due to excellent heat resistance, has excellent chemical resistance and moisture resistance, And is known as a representative one of bag filter materials for removing dry dust in a high temperature environment.
그리고, 상기 메타 아라미드 단섬유와 함께 본 발명의 부직포 표면층을 구성하는 폴리페닐린 설파이드 역시 고온환경에서 기계적 강도가 높고, 낮은 열팽창계수 특성으로 온도의존성이 낮으며 우수한 내화학성 및 내열성을 지니고 있을 뿐 아니라 난연성이어서 상기 메타 아라미드와 함께 고온 배출가스 집진용 필터 소재의 하나로 알려져 있다. Polyphenyl sulfide composing the surface layer of the nonwoven fabric of the present invention together with the meta-aramid staple fibers has high mechanical strength in a high-temperature environment, low thermal dependency due to a low thermal expansion coefficient characteristic, excellent chemical resistance and heat resistance And is known as one of filter materials for high-temperature exhaust gas collecting together with the above-mentioned meta-aramid.
상기 메타 아라미드 단섬유와 폴리페닐린 단섬유의 혼합비율은 중량비로 6:4 내지 4:6이고, 5:5 정도가 바람직하다.The mixing ratio of the meta-aramid staple fiber and the polyphenylene staple fiber is 6: 4 to 4: 6 by weight, preferably 5: 5.
한편, 이면층을 구성하는 기포로는 글라스 직물이 사용된다. 상기 글라스 직물은 1600℃의 고온에서 용융하여 100∼400본을 로빙한 것으로서, 제직형태는 평직을 취하고 있으며, 필라멘트의 직경은 대략 9㎛ 정도이다. 그리고 글라스 직포의 두께는 약 0.25mm 정도, 무게는 270g/㎡ 정도가 바람직하다.On the other hand, a glass fabric is used as a bubble forming the backside layer. The glass fabric is melted at a high temperature of 1600 占 폚 and lobbed 100 to 400 bobbins. The woven fabric has a plain weave shape and the filament diameter is approximately 9 占 퐉. The glass woven fabric preferably has a thickness of about 0.25 mm and a weight of about 270 g / m 2.
알려진 바와 같이, 글라스 섬유는 기존의 다른 내열성 백필터용 섬유에 비해서 한층 높은 내열특성을 지니고 있으나, 물리적인 충격에 약하고 내화학성이 떨어지는 단점이 있다.As is known, glass fibers have higher heat resistance than other conventional heat-resistant bag filter fibers, but they are weak against physical impact and have low chemical resistance.
따라서, 이같은 일반적인 글라스 섬유로 제직된 직포를 상기의 표면층과 물리적인 결합을 시키는 과정, 즉 니들펀칭을 행하는 공정을 수행하게 되면 니들의 선단에 의해 가해지는 물리적인 충격에 의해 글라스 섬유가 손상되거나 절단되어 일체화된 부직포로의 가공이 불가능하게 된다.Therefore, if the process of physically bonding the woven fabric woven with the ordinary glass fiber to the surface layer, that is, the step of performing the needle punching is performed, the glass fiber is damaged or cut by the physical impact applied by the tip of the needle So that processing into an integrated nonwoven fabric becomes impossible.
이에 본 발명에서는 상기의 문제점을 해결하기 위한 방편으로서 글라스 직포를 액상의 테프론에 침지시키거나 테프론 용액조를 통과시켜 글라스 직물의 표면을 테프론 코팅처리한 것을 기술적 특징의 하나로 하고 있다.Accordingly, one of the technical features of the present invention is to immerse a glass woven fabric in a liquid phase Teflon or to pass a Teflon solution tank to treat the surface of the glass fabric by Teflon coating.
이와 같이 테프론 코팅 처리된 글라스 직물 직포는 표면층과 이면층과의 결합을 위한 니들 펀칭시에 글라스 섬유의 표면을 감싸고 있는 고인성의 테프론 코팅층에 의해서 니들의 선단부에 의해 글라스 섬유에 가해지는 충격이 감쇄되는 한편 테프론 코팅층에 의한 글라스 섬유 자체의 충격저항성 증가로 니들펀칭 공정 중에 글라스 섬유가 손상되는 현상이 방지된다.The Teflon-coated glass fabric woven fabric is subjected to a high-temperature Teflon coating layer surrounding the surface of the glass fiber at the time of punching the needle for bonding the surface layer and the backside layer, whereby the impact applied to the glass fiber by the tip of the needle is attenuated On the other hand, the increase of the impact resistance of the glass fiber itself by the Teflon coating layer prevents the glass fiber from being damaged during the needle punching process.
이때, 상기 글라스 직물에 도포되는 테프론 수지의 양은 감열감량(LOSS ON IGNITION)으로 10% 내외가 바람직하다. 상기 감열감량이란 테프론 코팅된 글라스 직물을 태웠을 때의 질량감소 백분율을 의미한다. 다시 말하면, 테프론 코팅된 글라스에 열을 가하여 연소시키게 되면 융점이 높은 글라스는 그대로 남고 코팅된 수지성분으로서의 테프론만이 연소되어 제거가 이루어지게 되므로, 감열감량은 테프론 코팅된 글라스 직물에서 차지하는 테프론의 코팅량을 의미하게 된다.At this time, the amount of the Teflon resin applied to the glass fabric is preferably about 10% by Loss on Weight (LOSS ON IGNITION). The thermal loss refers to the percent reduction in mass when a Teflon coated glass fabric is burnt. In other words, when heat is applied to the Teflon-coated glass and the glass is burned, only the Teflon as the coated resin component is burned and removed because the glass having a high melting point is left as it is. Thus, the thermal loss is not limited to the Teflon coating .
상기 테프론 코팅 글라스 직물의 감열감량이 10% 보다 적은 경우에는 테프론에 의한 글라스 섬유의 충격강도 보강이 미흡하게 되고, 10%를 상회하게 되면 니들펀칭시에 니들의 직포 통과가 방해되어 니들펀칭 공정의 수행에 지장이 초래된다.If the thermoset loss of the Teflon-coated glass cloth is less than 10%, the impact strength of the glass fiber due to Teflon is insufficient. If the Teflon-coated glass fabric has a thermal loss of more than 10%, penetration of the needle during the needle punching is interrupted, The performance is hindered.
상기 표면층을 이루는 섬유 소재와 이면층을 구성하는 테프론 코팅 글라스 직물에 대한 니들펀칭의 결과로 얻어진 고온 백필터용 부직포에서 표면층에 대한 표면층 대 이면층의 중량비율은 45:55 ∼ 55:45 범위가 바람직하다. The weight ratio of the surface layer to the back layer with respect to the surface layer in the nonwoven fabric for a high-temperature bag filter obtained as a result of needle punching on the Teflon-coated glass cloth constituting the surface layer and the back layer is in the range of 45:55 to 55:45 desirable.
본 발명에 따른 고온용 기체필터용 부직포는 고온의 배출가스와 직접 접촉하는 표면층이 내열성과 내화학성이 우수한 메타 아라미드 단섬유 및 폴리페닐린 설파이드 단섬유로 이루어져 있어서 서브미크론 단위의 미세분진에 대해서도 제거가 가능함과 아울러 고온 노출 분위기에서의 장시간 사용에도 포집성능의 저하가 최소화되는 장점이 있다.The nonwoven fabric for a high-temperature gas filter according to the present invention is characterized in that the surface layer in direct contact with the exhaust gas at a high temperature is composed of short meta-aramid fibers and polyphenylene sulfide staple fibers excellent in heat resistance and chemical resistance, And the deterioration of the collecting performance is minimized even when the apparatus is used for a long time under a high-temperature exposure atmosphere.
또한, 본 발명은 내열성과 경제성이 우수하나 충격강도가 약하여 고온용 기체필터용 부직포의 직포로 사용되고 있지 못하던 유리섬유의 표면을 테프론 코팅처리하여 내충격 강도를 부여함으로써 표면층과의 결합을 위한 니들펀칭이 원활하게 이루어짐으로써 경제적인 제조비용으로 높은 포집특성을 발휘하는 고온용 기체필터용 부직포를 얻을 수 있다는 이점이 있다.
In addition, the present invention provides a high-temperature nonwoven fabric nonwoven fabric having excellent heat resistance and economical efficiency but having a low impact strength, which is not used as a woven fabric, and the surface of the glass fiber is subjected to Teflon coating treatment to impart impact strength, It is advantageous in that a nonwoven fabric for a high-temperature gas filter exhibiting high collection characteristics at an economical production cost can be obtained.
도1은 본 발명의 고온용 기체필터용 부직포 제조공정도
도2는 본 발명에 따른 글라스 기포 직물에 대한 확대사진
도3은 본 발명에 따른 테프론 코팅 글라스 섬유에 대한 확대사진
도4는 본 발명의 일실시예 고온용 기체필터용 부직포 확대사진 1 is a view illustrating a process for producing a nonwoven fabric for a high temperature gas filter according to the present invention
2 is an enlarged photograph of a glass bubble fabric according to the present invention
3 is an enlarged photograph of a Teflon coated glass fiber according to the present invention
4 is an enlarged photograph of a nonwoven fabric for a high temperature gas filter according to an embodiment of the present invention
이하, 본 발명의 실시예에 대하여 설명한다.Hereinafter, embodiments of the present invention will be described.
도1은 본 발명의 실시예에 따른 고온용 기체필터용 부직포의 제조공정도이 다. 1 is a view illustrating a process for producing a nonwoven fabric for a high-temperature gas filter according to an embodiment of the present invention.
먼저, 표면층 형성용 원료 섬유로서, 2데니어 압축된 메타 아라미드 단섬유와 2데니어 폴리페닐린 설파이드 단섬유를 마련하여, 이들 원료 단섬유를 1:1의 중량비율로 혼합하여 이송벨트 위에서 정전기 방지 및 수분을 함유할 수 있도록 정전기 방지제가 혼합된 물로 스프레이시키면서 혼타면기로 이송시켰다. First, 2-denier compressed meta-aramid short fibers and 2-denier polyphenylene sulfide short fibers were provided as raw material fibers for forming the surface layer, and these short-staple short fibers were mixed at a weight ratio of 1: 1, The antistatic agent was transferred to the horn rim while being sprayed with mixed water so as to contain moisture.
이송되어 온 혼합 원료섬유를 혼타면기 내부에서 일정하게 혼합되도록 이용하여 혼타면을 한 후에 스파이크 라티스(spike lattice)를 이용해서 프리하게 개면이 이루어지도록 하였다.The mixed raw material fibers that have been conveyed are mixed in a uniformly mixed state in the horn surface, and the horn surfaces are formed, and the surface is freely opened using a spike lattice.
상기 개면된 표면층 원료 섬유를 1차 개면기로 이송시켜 개면기 내부에 위치하고 있는 와이어에 의해서 가늘게 개면이 이루어지도록 하였다.The opened surface layer raw material fibers were transferred to the primary opening face to make a narrow opening face by the wire located inside the opening face.
이어서, 1차 개면된 웹(web)을 호퍼공정으로 이송시켜 고르게 배합될 수 있도록 스파이크 라티스로 2차 개면이 이루어지도록 하였다. 이와 같은 1차 개면공정을 통해서 혼합 원료섬유는 서로 미세하고 섬세하게 교략되면서 개면이 이루어지게 되는바, 이때 중량의 조절은 피드롤러(feed roller)와 메인실린더의 제어에 의해서 이루어지게 된다.Next, the first-opened web is transferred to the hopper process so that the secondary opening is made with spikes so that it can be evenly mixed. Through such a primary opening process, the mixed raw fibers are finely and delicately combined with each other, and the opening is made by controlling the feed rollers and the main cylinder.
이와 같이 개면이 완료된 웹은 성형공정(cross lapping)을 거치면서 여러겹으로 적층되어 어느 정도의 형태가 유지되고 이어지는 1차 니들 펀칭을 통해서 엷게 결속이 이루어지게 된다.In this way, the finished web is laminated several times while cross lapping, and a certain degree of shape is maintained, and then the first needle punching is carried out to tie the web thinly.
다음, 상기 결속된 웹 위에 테프론 코팅된 글라스 직물 기포를 위치시키고 합봉결속(main punching)을 수행하여 2층 구조로의 결속이 이루어지도록 하였다.Next, Teflon-coated glass fabric bubbles were placed on the bound web and main punching was performed to bind to the two-layer structure.
이때 사용된 글라스 직물 기포는 글라스 직물은 고온에서 용융하여 약 300본 정도로 로빙된 것으로, 필라멘트의 직경은 대략 9㎛ 정도이고, 글라스 직포의 두께는 약 0.25mm, 무게는 대략 270g/㎡ 이며, 이같은 직포에 대하여 감열감량이 대략 10%로 되도록 테프론 코팅이 행해진 것이 사용되었다.The diameter of the filament is about 9 mu m, the thickness of the glass woven fabric is about 0.25 mm, the weight is about 270 g / m < 2 >, and the thickness of the glass woven fabric And a Teflon coating was applied to the woven fabric so that the thermal loss was about 10%.
도2는 상기 글라스 기포 직물에 대한 확대사진이고, 도3은 글라스 필라멘트에 테프론이 코팅된 상태를 보여주는 테프론 코팅 글라스 섬유에 대한 확대사진이다. FIG. 2 is an enlarged photograph of the glass bubble fabric, and FIG. 3 is an enlarged photograph of a Teflon-coated glass fiber showing a state in which a glass filament is coated with Teflon.
상기 합봉결속시 스트로크 수는 적게하고 침심으로 층이 분리되지 않도록 조절한 가운데 결속이 이루어지도록 최상의 작업조건을 선정하여 작업을 행하였다. 아울러 꺽임성 및 탄성회복 특성 등이 유지됨과 아울러 적절한 통기성도 유지될 수 있도록 결속공정의 작업조건을 제어하였다.The best working conditions were selected so that the number of strokes was reduced and the layer was not separated by the mashing while the joining was performed. In addition, the bending and elastic recovery characteristics were maintained and the operating conditions of the binding process were controlled so that adequate ventilation was maintained.
이때, 표면층과 이면층의 교락의 편차가 발생할 수 있으므로, 이를 방지하기 위하여 마무리 결속공정을 수행하여 발생할 수도 있는 교락의 편차가 최소화되도록 하였다. 그리고, 외형상 나타나는 니들마크나 니들트랙을 억제하여 최상의 부직포 상태가 유지되도록 하였다.At this time, deviation between the surface layer and the back layer may occur. Therefore, in order to prevent this, it is necessary to perform the final bonding process so that the deviation of the interlocking that may occur may be minimized. In addition, needle marks or needle tracks appearing on the outer surface were suppressed to maintain the best nonwoven fabric state.
펀칭공정이 완료된 웹은 표면층과 이면층의 이중층으로 형성되는바, 양면 모두에 대해 기모를 태우는 모소가공을 행하여 집진시 미세먼지가 원료 화이버에 달라붙이 못하도록 함으로써 탈진특성이 우수하면서도 포집력의 증대가 도모되도록 하는 한편 기공의 팽창억제를 통한 미세분진의 침투 방지로 차압이 낮아지도록 하여 부직포의 수명이 연장되도록 하였다.The web having the punching process is formed of a double layer of a surface layer and a backing layer. Since the micro-dust is burned on both sides of the web, the fine dust can not be stuck to the raw fiber fiber, While preventing infiltration of fine dust through suppression of expansion of the pores, so that the differential pressure is lowered so that the life of the nonwoven fabric is prolonged.
도4는 상기의 제조공정을 통해서 얻어진 본 발명의 일실시예 고온용 기체필터용 부직포에 대한 단면확대사진이다.4 is an enlarged cross-sectional view of a nonwoven fabric for a high-temperature gas filter of the present invention obtained through the above-described manufacturing process.
도4에서와 같이 제작이 완료된 본 발명에 따른 부직포는 니들펀칭 공정의 수행을 거치면서도 유리섬유의 손상이나 절단이 발생하지 않았음을 알 수 있다.As shown in FIG. 4, it can be seen that the nonwoven fabric according to the present invention, which has been fabricated as described above, does not suffer damage or breakage of the glass fiber while performing the needle punching process.
Claims (6)
The nonwoven fabric for a high temperature gas filter according to claim 1, wherein the Teflon-coated glass cloth bubble of the back layer has a thermal loss of 10%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08192018A (en) * | 1995-01-20 | 1996-07-30 | Teijin Ltd | Filter cloth with improved durability |
| KR20070033310A (en) * | 2003-08-25 | 2007-03-26 | 다카야스 가부시키가이샤 | Sound absorbing material |
| JP2010264430A (en) | 2009-05-18 | 2010-11-25 | Ambic Co Ltd | Filter fabric for bag filter |
| JP2011183236A (en) | 2010-03-04 | 2011-09-22 | Kureha Ltd | Method for manufacturing filter medium for heat-resistant filter having bulkiness, and heat-resistant filter using the filter medium |
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2012
- 2012-11-07 KR KR1020120125186A patent/KR101416604B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08192018A (en) * | 1995-01-20 | 1996-07-30 | Teijin Ltd | Filter cloth with improved durability |
| KR20070033310A (en) * | 2003-08-25 | 2007-03-26 | 다카야스 가부시키가이샤 | Sound absorbing material |
| JP2010264430A (en) | 2009-05-18 | 2010-11-25 | Ambic Co Ltd | Filter fabric for bag filter |
| JP2011183236A (en) | 2010-03-04 | 2011-09-22 | Kureha Ltd | Method for manufacturing filter medium for heat-resistant filter having bulkiness, and heat-resistant filter using the filter medium |
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