KR20000026311A - Ceramic fiber filter containing fibrous catalyst carrier and preparation thereof - Google Patents

Ceramic fiber filter containing fibrous catalyst carrier and preparation thereof Download PDF

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KR20000026311A
KR20000026311A KR1019980043805A KR19980043805A KR20000026311A KR 20000026311 A KR20000026311 A KR 20000026311A KR 1019980043805 A KR1019980043805 A KR 1019980043805A KR 19980043805 A KR19980043805 A KR 19980043805A KR 20000026311 A KR20000026311 A KR 20000026311A
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catalyst carrier
ceramic fiber
surface area
ceramic
fiber filter
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KR100291721B1 (en
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이재춘
홍민선
최영진
박민진
이준석
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • C04B38/0058—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity open porosity
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0081—Uses not provided for elsewhere in C04B2111/00 as catalysts or catalyst carriers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: A preparation of ceramic fiber filter containing a fibrous catalyst carrier is provided which has an air transmissivity not smaller than 500cc/cm¬2.min though the surface area of the ceramic filter increases due to forming the fibrous catalyst carrier in the ceramic filter. CONSTITUTION: A ceramic fiber filter is obtained by a process containing the steps of: mixing 40-70wt% of high strength ceramic fiber having surface area of less than 1 m2/g and 30-60wt% of fibrous catalyst carrier having surface area of 30-200 m2/g with water to form a slurry; molding to the form of a plate or a cylinder; adding 10-20wt% of colloidal inorganic bonding materials composed of each or mixture of aluminum, silica and titania; drying and sintering, which result in ceramic fiber filter containing a fibrous catalyst carrier having a porosity of 80-90% and a surface area of 20-100 m2/g

Description

섬유상 촉매담체를 함유한 세라믹섬유필터와 그 제조방법Ceramic fiber filter containing fibrous catalyst carrier and its manufacturing method

본 발명은 연소가스에 포함되어 배출되는 먼지와 유해가스를 고온에서 동시에 처리하기 위하여 먼지포집용 세라믹섬유필터에 섬유상의 촉매담체를 함침시켜서 세라믹섬유필터의 비표면적이 증대되어도 공기투과율이 저하되지 않게한 섬유상 촉매담체를 함유한 세라믹섬유필터와 그 제조방법에 관한 것이다The present invention is impregnated with a fibrous catalyst carrier in the dust collecting ceramic fiber filter in order to simultaneously process the dust and harmful gas discharged in the combustion gas at a high temperature so that the air permeability does not decrease even if the specific surface area of the ceramic fiber filter is increased A ceramic fiber filter containing a fibrous catalyst carrier and a manufacturing method thereof

일반적으로 고온 배기가스 중의 분진과 유해가스를 동시에 처리하기 위해서 세라믹섬유를 기지로하여 제조된 세라믹섬유필터 또는 코디에라이트와 같은 세라믹입자를 기지로하여 제조된 세라믹입자필터에 비표면적이 큰 촉매담체 물질을 코팅시킨후 촉매를 담지시켜 얻어진 촉매담지 세라믹필터가 알려져 있다.In general, a catalyst carrier having a large specific surface area in a ceramic fiber filter manufactured on the basis of ceramic fibers or a ceramic particle filter manufactured on the basis of ceramic particles such as cordierite in order to simultaneously process dust and harmful gases in high temperature exhaust gas. BACKGROUND ART Catalyst supported ceramic filters obtained by coating a material and then supporting a catalyst are known.

공기투과율이 높은 세라믹섬유필터에 비표면적이 큰 촉매담체물질을 코팅하는 경우,코팅되는 촉매담체 물질의 양에 비례하여 세라믹섬유필터의 비표면적이 증가되므로써 필터의 촉매담체기능이 향상되어 유해가스 처리효율은 향상되나 상대적으로 공기투과율이 저하되어 분진의 처리효율은 낮아지는 문제점이 있었다.In the case of coating a catalyst carrier material with a large specific surface area on a ceramic fiber filter having a high air permeability, the catalyst carrier function of the filter is improved by increasing the specific surface area of the ceramic fiber filter in proportion to the amount of the catalyst carrier material coated. Although the efficiency is improved, there is a problem that the treatment efficiency of dust is lowered because the air permeability is relatively reduced.

즉 세라믹섬유가 형성하는 기공이 도포,코팅되는 촉매담체물질에 의해서 채워짐으로해서 도포되는 촉매담체의 양이 증가됨에 따라 섬유가 형성하는 기공의 크기가 작아지며 이러한 기공크기의 감소는 곧 바로 필터의 공기투과율 감소를 초래한다.That is, as the pores formed by ceramic fibers are filled with the catalyst carrier material applied and coated, the amount of catalyst carrier applied decreases the size of the pores formed by the fiber. It causes a decrease in air permeability.

그리고 공기투과율 향상을 위해서 도포되는 촉매담체물질의 양을 감소시키면 필터의 공기투과율이 낮아지는 문제는 해결할수 있으나 상대적으로 도포되는 촉매담체의 양이 낮으므로 해서 필터의 최종적인 촉매기능이 낮아져 유해가스의 처리효율이 저하된다.In addition, reducing the amount of catalyst carrier applied to improve the air permeability can solve the problem of lowering the air permeability of the filter. However, since the amount of the catalyst carrier applied is relatively low, the final catalytic function of the filter is lowered. Treatment efficiency is lowered.

따라서 상기한 종래의 세라믹섬유필터에 촉매담체를 단순히 액상 또는 고상입자로 도포시켜 제작되는 촉매기능 세라믹섬유필터는 그 제작방법 특성상 먼지포집과 유해가스를 동시에 처리하는 공정에 사용하기에는 문제점이 있었다.Therefore, the catalytic functional ceramic fiber filter produced by simply applying a catalyst carrier to the above-described conventional ceramic fiber filter with liquid or solid particles has a problem in that it is used in a process for simultaneously collecting dust and harmful gases due to its manufacturing method.

따라서 본 발명은 상기한 종래의 문제점을 개선하기 위한 목적으로 창출된 것으로 세라믹섬유필터의 촉매담체 함량을 증가시키면서도 세라믹섬유필터의 공기투과율이 저하되지 않는 섬유상 촉매담체를 함유한 세라믹섬유필터를 창출하여 먼지와 유해가스를 고온에서 동시에 효율적으로 처리할수 있는 섬유상 촉매담체를 함유한 세라믹섬유필터를 제공하기 위한 것이다.Therefore, the present invention was created for the purpose of improving the conventional problems described above, while creating a ceramic fiber filter containing a fibrous catalyst carrier that does not reduce the air permeability of the ceramic fiber filter while increasing the catalyst carrier content of the ceramic fiber filter. An object of the present invention is to provide a ceramic fiber filter containing a fibrous catalyst carrier capable of efficiently treating dust and harmful gases at a high temperature at the same time.

상기한 섬유상 촉매담체를 함유한 세라믹섬유필터를 제공하기 위하여 사용되는 섬유상 담체로는 탄화규소 또는 탄화바나듐과 같은 탄화물계 섬유상 촉매담체인 비표면적이 30-150m2/g이고 지름이 2-15㎛,길이가 60㎛인 탄화규소섬유담체(탄화바나듐섬유담체)를 사용하거나 산화물계 섬유상 촉매담체인비표면적이 150-200m2/g이고 섬유직경은 2-15㎛이며 길이는 60㎛이상인 알루미나,실리카,알루미노실리케이트,지르코니아 및 티타니아와 같은 세라믹 재질로 이루어진 섬유상 담체를 사용하여 섬유상 촉매담체를 함유한 세라믹섬유필터를 제조함에 있어 비표면적이 1m2/g이하인 고강도 세라믹섬유(40-70wt%)와 비표면적이 30-200m2/g인 섬유상 세라믹담체(30-60wt%)로 이루어진 조성물을 물과 혼합하여 슬러리 형태로 만든후 진공성형방법으로 판상형,원통형과 같은 특정모양의 섬유필터를 성형한 후 알루미나,실리카 및 티타니아물질을 단독으로하거나 전기한 물질의 혼합물로 이루어진 콜로이달 무기결합제(10-20wt%)를 함유시켜 얻어진 것을 일반적으로 섬유필터 제작공정 즉 건조와 소성을 거쳐서 기공율이 80-90%이며 비표면적이 20-100m2/g이고 10cmH2O의 차압에서 공기투과율이 500cc/cm2.min이상을 가질 수 있는 섬유상 촉매담체를 함유한 세라믹섬유필터를 제공하는 것이다.The fibrous carrier used to provide the ceramic fiber filter containing the fibrous catalyst carrier is a carbide-based fibrous catalyst carrier such as silicon carbide or vanadium carbide having a specific surface area of 30-150 m 2 / g and a diameter of 2-15 μm. Alumina, silica having a specific surface area of 150-200m 2 / g, fiber diameter of 2-15㎛ and 60㎛ length using silicon carbide fiber carrier (vanadium carbide fiber carrier) with a length of 60㎛ In the manufacture of a ceramic fiber filter containing a fibrous catalyst carrier using a fibrous carrier made of a ceramic material such as aluminosilicate, zirconia and titania, high-strength ceramic fibers having a specific surface area of less than 1 m 2 / g (40-70wt%) and A composition consisting of a fibrous ceramic carrier (30-60 wt%) having a specific surface area of 30-200 m 2 / g is mixed with water to form a slurry, and then vacuum forming method is the same as a plate-like or cylindrical one. Is obtained by forming a specific shape of the fiber filter and then containing a colloidal inorganic binder (10-20 wt%) composed of alumina, silica and titania alone or a mixture of the above materials. Ceramic fiber filter containing a fibrous catalyst carrier with porosity of 80-90%, specific surface area of 20-100m 2 / g and air permeability of 500cc / cm 2 .min at a differential pressure of 10cmH 2 O. To provide.

도 1 은 본 발명인 섬유상 촉매담체를 함유한 세라믹섬유필터의 종단면1 is a longitudinal cross-sectional view of a ceramic fiber filter containing a fibrous catalyst carrier of the present invention

구조도Structure

도 2 는 종래의 촉매담체를 함유한 세라믹섬유필터의 종단면 구조도Figure 2 is a longitudinal cross-sectional structure diagram of a ceramic fiber filter containing a conventional catalyst carrier

이하 발명의 요지를 첨부된 도면에 연계시켜 그 구성과 작용을 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

도 1 은 본 발명인 섬유상 촉매담체를 함유한 세라믹섬유여과재의 종단면 구조도로서 고강도 세라믹섬유,섬유상 촉매담체 및 촉매담체가 형성하고 있는 기공을 도시한 것이다.1 is a longitudinal cross-sectional structural view of a ceramic fiber filter material containing a fibrous catalyst carrier of the present invention showing pores formed by a high strength ceramic fiber, a fibrous catalyst carrier and a catalyst carrier.

섬유상 촉매담체를 함유한 세라믹섬유필터를 제공하기 위하여 탄화규소,탄화바나듐과 같은 탄화물계 섬유상 촉매담체인 비표면적이 30-150m2/g이고 지름이 2-15㎛,길이가 60㎛인 탄화규소섬유담체(탄화바나듐섬유담체)를 사용하거나 산화물계 섬유상 촉매담체인 비표면적이 150-200m2/g이고 섬유직경은 2-15㎛이며 길이는 60㎛이상인 알루미나,실리카,알루미노실리케이트,지르코니아 및 티타니아와 같은 세라믹 재질로 이루어진 섬유상 담체를 사용하여 비표면적이 1m2/g이하인 고강도 세라믹섬유(40-70wt%)와 비표면적이 30-200m2/g인 섬유상 세라믹담체(30-60wt%)로 이루어진 조성물을 물과 혼합하여 슬러리 형태로 만든후 진공성형방법으로 판상형,원통형과 같은 특정모양의 섬유필터를 성형한 후 일반적인 알루미나,실리카 및 티타니아물질을 단독으로 하거나 전기한 물질의 혼합물로 이루어진 콜로이달 무기결합제(10-20wt%)를 함유시켜 얻어진 것을 섬유필터 제작공정 즉 건조와 소성을 거쳐서 기공율이 80-90%이며 비표면적이 20-100m2/g이고 10cmH2O의 차압에서 공기투과율이 500cc/cm2.min이상을 가질수 있는 섬유상 촉매담체를 함유한 세라믹섬유필터를 제조하는 것이다.To provide a ceramic fiber filter containing a fibrous catalyst carrier, a carbide-based fibrous catalyst carrier such as silicon carbide and vanadium carbide has a specific surface area of 30-150 m 2 / g, 2-15 μm in diameter, and 60 μm in length. Alumina, silica, aluminosilicate, zirconia and the like having a specific surface area of 150-200 m 2 / g, a fiber diameter of 2-15 µm and a length of 60 µm or more using a fiber carrier (vanadium carbide fiber carrier) High strength ceramic fiber (40-70wt%) with specific surface area of less than 1m 2 / g and fibrous ceramic carrier (30-60wt%) with specific surface area of 30-200m 2 / g using a fibrous carrier made of ceramic material such as titania. The resulting composition is mixed with water to form a slurry, and then a specific type of fiber filter, such as a plate or cylinder, is formed by vacuum forming, and then general alumina, silica, and titania are used alone. That is obtained by containing a colloidal inorganic binder (10-20wt%) consisting of a mixture of a substance through the electric filter fiber production process that is dried and calcined porosity of 80-90% and a specific surface area of 20-100m 2 / g and 10cmH A ceramic fiber filter containing a fibrous catalyst carrier having an air permeability of 500 cc / cm 2 min or more at a differential pressure of 2 O is prepared.

이와같이된 본 발명의 특징은 섬유화된 세라믹담체를 세라믹섬유필터 제작에 사용함으로써 세라믹섬유필터의 촉매담체기능을 강화하면서도 촉매담체로 인한 필터의 공기투과율 감소를 방지할 수 있는 것이다.The feature of the present invention is to use a fiberized ceramic carrier in the manufacture of a ceramic fiber filter to enhance the catalyst carrier function of the ceramic fiber filter while preventing a decrease in air permeability of the filter due to the catalyst carrier.

본 발명에 적용되는 비표면적이 큰 섬유상 담체는 비표면적이 1m2/g이하인 고강도 세라믹섬유에 비해서 기계적 강도는 낮으나 주 기공크기가 5nm이상인 미세기공을 많이 함유하고 있어서 비표면적이 30m2/g이상이어서 촉매담체로써 사용되며 촉매담지 필터 제조시 비표면적이 영에 가까운 세라믹섬유와 혼합되어 섬유필터의 비표면적을 증가시키면서도 섬유필터의 기공률과 기공크기를 일정하게 유지하므로써 촉매담지 필터의 공기투과율이 낮아지는 것을 방지할수 있는 것이다.The fibrous carrier having a large specific surface area applied to the present invention has a lower mechanical strength than the high-strength ceramic fiber having a specific surface area of 1 m 2 / g or less but contains many micropores having a major pore size of 5 nm or more, so that the specific surface area is 30 m 2 / g or more. Subsequently, it is used as a catalyst carrier, and the specific surface area of the catalyst support filter is mixed with ceramic fibers close to zero, which increases the specific surface area of the fiber filter and maintains the porosity and pore size of the fiber filter so that the air permeability of the catalyst support filter is low. You can prevent losing.

비표면적이 1m2/g이하인 고강도 세라믹섬유는 촉매담체기능은 없으나 세라믹섬유필터의 기계적강도를 유지하기 위해서 사용되며 통상 지름2-4㎛,길이 1-2mm로 상업적으로 판매되고 있는 알루미노실리케이트,알루미나,탄화규소와 같은 세라믹섬유등이 사용된다.High-strength ceramic fibers with a specific surface area of less than 1 m 2 / g have no catalytic carrier function but are used to maintain the mechanical strength of the ceramic fiber filter and are usually commercially available aluminosilicates with a diameter of 2-4㎛ and a length of 1-2mm, Ceramic fibers such as alumina and silicon carbide are used.

그리고 섬유상 촉매담체를 함유한 세라믹섬유필터 제조에서 고강도 세라믹섬유는 통상적으로 40-70%가 사용되는데 조성비율이 클수록 섬유필터의 기계적강도는 증가되나 촉매담체기능이 감소되며 반대로 섬유필터 조성물에서 고강도 세라믹 조성비율이 낮으면 촉매담체기능은 강화되나 섬유필터의 기계적강도는 낮아진다.In the manufacture of a ceramic fiber filter containing a fibrous catalyst carrier, high strength ceramic fibers are typically used at 40-70%. The higher the composition ratio, the higher the mechanical strength of the fiber filter but the lower the catalyst carrier function. A low composition ratio enhances the catalyst carrier function but lowers the mechanical strength of the fiber filter.

섬유상 촉매담체를 함유한 세라믹섬유필터 제조에서 통상적으로 섬유상 촉매담체는 30-60wt%가 사용되는데 조성비율이 클수록 섬유필터의 담체기능은 강화되나 기계적 강도는 감소되며 섬유상 촉매담체의 조성비율이 낮을수록 섬유필터의 기계적 강도는 커지나 담체기능은 약화된다.In the manufacture of ceramic fiber filters containing a fibrous catalyst carrier, a fibrous catalyst carrier is generally used in the range of 30-60 wt%. The larger the composition ratio, the stronger the carrier function of the fibrous filter but the lower the mechanical strength. The mechanical strength of the fiber filter increases, but the carrier function is weakened.

무기결합제는 상기한 두 종류의 세라믹섬유를 결합시키므로써 세라믹섬유필터를 제작할 수 있도록 하며 섬유상 촉매담체를 함유한 세라믹필터를 제조함에 있어 무기결합제는 세라믹 졸을 이용하는데 알루미나 졸,실리카 졸 및 티타니아 졸의단독 또는 이들 혼합물 졸이 사용된다.Inorganic binders enable the manufacture of ceramic fiber filters by combining the two types of ceramic fibers described above. In the manufacture of ceramic filters containing fibrous catalyst carriers, the inorganic binders use ceramic sol. Alumina sol, silica sol and titania sol Alone or a mixture of these sols are used.

이러한 액상무기결합제를 고강도 세라믹 섬유와 섬유상 촉매담체 조성물로 이루어진 섬유필터 성형체에 균질하게 함유시키면 이들 액상무기결합제는 고강도 세라믹 섬유와 섬유상 촉매담체에 코팅되면서 이들 섬유를 결합시키는 역할을 수행한다.When the liquid inorganic binder is homogeneously contained in a fibrous filter molded body made of a high strength ceramic fiber and a fibrous catalyst carrier composition, these liquid inorganic binders serve to bond these fibers while being coated on the high strength ceramic fiber and the fibrous catalyst carrier.

이렇게 제작된 섬유필터는 500-900℃로 소성시키면 무기결합제는 통상 150-200m2/g의 비표면적을 나타내므로 촉매담체로서의 기능을 가지면서 섬유상 촉매담체와 고강도 세라믹 섬유를 결합시키는 역할을 동시에 수행하며 섬유필터의 기계적 강도를 갖게한다.When the fiber filter fabricated as described above is fired at 500-900 ° C, the inorganic binder usually exhibits a specific surface area of 150-200 m 2 / g. Thus, the fiber filter has a function as a catalyst carrier and simultaneously serves to combine the fibrous catalyst carrier and the high-strength ceramic fiber. And the mechanical strength of the fiber filter.

상기의 무기결합제는 섬유상 촉매담체를 함유한 세라믹필터 제조에서 통상적으로 10-20wt%가 사용되는데 조성비율이 증가될수록 필터의 담체기능이 증가되고 기계적강도는 증가되나 섬유가 형성하는 기공을 무기결합제가 막게되어 공기투과율이 낮아지고 반대로 무기결합제의 조성비율이 낮아질수록 섬유필터의 공기투과율은 커지나 필터의 담체기능이 약화되고 기계적강도가 낮아지는 문제점이 있다.The inorganic binder is generally used in the manufacture of a ceramic filter containing a fibrous catalyst carrier, 10-20wt%. As the composition ratio is increased, the carrier function of the filter increases and the mechanical strength increases, but the pores formed by the fiber As the air permeability is lowered and the composition ratio of the inorganic binder is lowered, the air permeability of the fiber filter increases, but the carrier function of the filter is weakened and mechanical strength is lowered.

따라서 촉매담체기능을 보유하면서 먼지를 효율적으로 포집하기 위해서는 상기한 본 발명의 섬유상 촉매담체를 함유한 세라믹섬유필터의 조성물에 의하여 제조하는 것이다.Therefore, in order to efficiently collect the dust while retaining the catalyst carrier function, it is prepared by the composition of the ceramic fiber filter containing the fibrous catalyst carrier of the present invention described above.

그러므로 본 발명은 촉매담체를 섬유상으로 섬유필터내에 분산시키므로 촉매담체를 분말 또는 액상형태로 함유시키는 경우에 비해서 필터내의 섬유상 촉매담체량이 증가하여도 섬유상 촉매담체가 형성하는 기공에 의해서 필터의 공기투과율이 저하되지 않으므로 연소가스 처리에 유리하며 동시에 촉매담체 함유량 증가에 따른 유해가스 제거기능이 상승효과를 얻을 수 있는 것이다.Therefore, the present invention disperses the catalyst carrier in a fibrous filter, so that the air permeability of the filter is increased by the pores formed by the fibrous catalyst carrier even when the amount of the fibrous catalyst carrier in the filter is increased as compared with the case where the catalyst carrier is contained in powder or liquid form. Since it does not decrease, it is advantageous to the combustion gas treatment and at the same time, the synergistic effect of the harmful gas removal function due to the increase of the catalyst carrier content can be obtained.

Claims (3)

기공률은 80-90%이며 비표면적이 20-100m2/g이상이고 10cmH2O의 차압에서 공기투과율이 500cc/cm2.min이상을 갖게한 것을 특징으로 하는 섬유상 촉매담체를 함유한 세라믹섬유필터.The porosity is 80-90%, the specific surface area is 20-100m 2 / g or more, and the ceramic fiber filter containing the fibrous catalyst carrier, characterized in that the air permeability is 500cc / cm 2 .min or more at a differential pressure of 10cmH 2 O . 섬유상 촉매담체를 함유한 세라믹필터를 제공하기 위하여 비표면적이 1m2/g이하인 고강도 세라믹섬유(40-70wt%)와 비표면적이 30-150m2/g인 탄화규소,탄화바나듐과 같은 탄화물계 섬유상 촉매담체(30-60wt%)로 이루어진 조성물을 물과 혼합하여 슬러리 형태로 만든후 진공성형방법으로 판상형,원통형과 같은 모양으로 성형한 후 알루미나,실리카 및 티타니아물질을 단독으로 하거나 전기한 물질의 혼합물로 이루어진 콜로이달 무기결합제(10-20wt%)를 함유시켜 얻어진 것을 500-900℃에서 소성시켜 제조하는 것을 특징으로 하는 섬유상 촉매담체를 함유한 세라믹섬유필터 제조방법.In order to provide a ceramic filter containing a fibrous catalyst carrier, high-strength ceramic fibers having a specific surface area of 1 m 2 / g or less (40-70 wt%) and carbide-based fibrous materials such as silicon carbide and vanadium carbide having a specific surface area of 30-150 m 2 / g A mixture of a catalyst carrier (30-60wt%) is mixed with water to form a slurry, and then formed into a plate-like or cylindrical shape by vacuum forming, and then alumina, silica, and titania alone or as a mixture of the above materials. A method of producing a ceramic fiber filter containing a fibrous catalyst carrier, characterized in that the obtained by containing a colloidal inorganic binder (10-20wt%) consisting of firing at 500-900 ℃. 섬유상 촉매담체를 함유한 세라믹필터를 제공하기 위하여 비표면적이 1m2/g이하인 고강도 세라믹섬유(40-70wt%)와 비표면적이 150-200m2/g인 산화물계 섬유상 촉매담체(30-60wt%)로 이루어진 조성물을 물과 혼합하여 슬러리 형태로 만든후 진공성형방법으로 판상형,원통형과 같은 모양으로 성형한 후 알루미나,실리카 및 티타니아물질을 단독으로 하거나 전기한 물질의 혼합물로 이루어진 콜로이달 무기결합제(10-20wt%)를 함유시켜 얻어진 것을 500-900℃에서 소성시켜 제조하는 것을 특징으로 하는 섬유상 촉매담체를 함유한 세라믹섬유필터 제조방법.In order to provide a ceramic filter containing a fibrous catalyst carrier, a high-strength ceramic fiber having a specific surface area of less than 1 m 2 / g (40-70 wt%) and an oxide-based fibrous catalyst carrier having a specific surface area of 150-200 m 2 / g (30-60 wt% ) Is mixed with water to form a slurry, and then formed into a plate-like, cylindrical-like by vacuum forming method, and then a colloidal inorganic binder composed of alumina, silica and titania alone or a mixture of the above materials. 10-20 wt%), the method of producing a ceramic fiber filter containing a fibrous catalyst carrier, which is produced by firing at 500-900 ° C.
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KR100337127B1 (en) * 2000-04-22 2002-05-16 손재익 Ceramic honeycomb rotor for adsorptive removal of volatile organic compound and its manufacturing method
KR100576985B1 (en) * 1998-12-31 2006-07-19 주식회사 케이씨씨 Ceramic paper for the production of combustion exhaust gas purification catalyst carrier

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JP2946925B2 (en) * 1992-02-12 1999-09-13 エヌオーケー株式会社 Manufacturing method of porous ceramic hollow fiber whose end is impregnated and sealed
JPH09234319A (en) * 1996-02-29 1997-09-09 Sumitomo Electric Ind Ltd Porous ceramics film, ceramics filter and its production

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100576985B1 (en) * 1998-12-31 2006-07-19 주식회사 케이씨씨 Ceramic paper for the production of combustion exhaust gas purification catalyst carrier
KR100337127B1 (en) * 2000-04-22 2002-05-16 손재익 Ceramic honeycomb rotor for adsorptive removal of volatile organic compound and its manufacturing method

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