• Proceedings of the Membrane Society of Korea Conference
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• 1993.10a
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• pp.68-73
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• 1993

여과포에 의한 분진 포집기술은 다른 분진포집기술에 비해 가장 우수한 집진성능을 나타낼수 있는 집진기술로서 최근에 와서는 분진발생공정, 연소설비 및 폐기물 소각설비의 중금속 물질, 유해 기체 및 분진의 동시포집 적용 등 광범위한 산업분야에 적응되어 운전되고 있다. 배출기체의 악조건과 습도가 다량 함유된 조건에서는 여과포 집진장치의 적용이 어렵다고 생각되고 있지만, 처리 기체의 조건 및 포집분진의 특성에 적합한 여과포의 개발과 탈진방식(cleaning method)의 개선으로 인해 해결이 가능하게 되었다. 또한 여과포에 의한 분진포집기술은 장치를 통과하는 배출기체의 속도가 다른 집진기술에 비해 느려 여과포 면적이 상대적으로 넓어져서 장치의 설치면적이 많이 소요된다는 단점이 있으나, 여과포를 원간으로 봉재하여 서로 접근시켜 많은 갯수를 다단으로 배치함과 동시에 연속탈진시스템(on-line cleaning)을 채택함으로써 장치에 소요되는 면적을 최소한으로 줄이려는 연구가 계속되고 있다. 대체적으로 여과포에 의한 분진포집기술의 산업체 적용에서 장치의 압력손실은 약 100 - 100 $mmH_2O$ 정도의 범위가 대부분이고 분진 포집효율은 거의 99.9%에서 99.99% 정도 달성이 가능하다[1,2,3].

• Journal of the Korea Organic Resources Recycling Association
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• v.32 no.2
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• pp.15-25
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• 2024

In this study, the regeneration effect of pressurized water and ultrasonic cleaning was investigated for contaminated filter cloth from the sewage sludge filter press process. For this purpose, contaminated filter cloth was collected from a 3-ton sewage sludge hydrothermal carbon treatment filter press. First, the contamination characteristics were analyzed. According to the location of the filter cloth, air permeability and unit mass were measured, and compared with the values of a new filter cloth. Next, the results were mapped over the entire area to evaluate the contamination characteristics. Finally, pressure cleaning at 3 bar and ultrasound at frequencies of 34, 76, 120, and 168 kHz were performed on the contaminated filter cloth. In addition, the cleaning efficiency was evaluated by 3 levels of contamination degree. As a result, pore contamination occurred mainly at the bottom and both sides of the filter cloth, where the filter material was continuously injected and compressed. Surface contamination appeared evenly over the entire area. As a result of washing, air permeability increased by 1.3-3.1%p and contaminant removal was by 2.7-4.4% under pressure. In ultrasonic cleaning, air permeability increased by 12.5-61.5%p and contaminants were removed by 2.7-29.2%. In ultrasonic cleaning the lower the frequency, the higher air permeability and contaminant removal rate. Also, The higher pore contamination level, the better the air permeability improvement and contaminant removal.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.563-566
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• 2003

여과포 표면상에 도달하는 입자의 농도를 낮추거나 균일하게 유지시킬 경우, 부착된 입자층 두께의 성장으로 인한 압력손실의 증가율을 줄일 수 있고 이로 인하여 탈진 주기 또한 감소시킬 수 있다. 탈진 조작의 저감으로 인하여 여과포의 수명 증대로 여과포의 교체 시기를 연장시킬 수 있으므로 여과포 집진장치의 운전 및 유지 보수비의 저감을 이룰 수 있다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.467-468
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• 1999

여과집진장치는 기존의 집진장치 중에서 집진효율이 가장 우수하나, 여과집진에서 필연적으로 발생하는 높은 압력손실과 탈진에 따른 여과포의 마모, 그리고 고온조건에서의 성능저하 등은 여과집진장치의 광범위한 적용을 저해하는 요인으로 작용해왔다. 탈진에 따른 여과포의 손상을 막고, 먼지입자의 표면여과를 극대화시키는 방법으로 기존의 여과포에 박막을 입히는 방법이 많은 연구자들에 의해 개발되어 왔다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.263-264
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• 2000

여과포 표면상에 도달하는 입자의 농토를 낮추거나 균일하게 유지시킬 경우, 부착된 입자층 두께의 성장으로 인한 압력손실의 증가율을 줄일 수 있고 이로 인하여 탈진 주기 또한 감소시킬 수 있다. 탈진조작의 저감으로 인하여 여과포의 수명 증대로 여과포의 교체 시기를 연장시킬 수 있으므로 여과포 집진장치의 운전 및 유지 보수비의 저감을 이룰 수 있다. 본 연구에서는 집진용기의 중간부분에 위치한 접선 유입관을 통하여 오염입자를 함유한 기체유동을 유입시킨 후, 원심력과 난류확산에 의하여 집진용기 내벽과 내통(inner tube) 벽면에 부착된 입자는 중력에 의하여 용기 바닥으로 모인 후 바닥면에 설치된 스크래퍼(scraper)를 통하여 분리 처리될 수 있는 새로운 형상의 집진장치를 개발하고자 하였다. (중략)

• Journal of Energy Engineering
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• v.7 no.1
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• pp.57-64
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• 1998

A neutralized fabric filter of which major raw materials were polyester and stainless steel fibers was developed and its physiochemical properties and basic filter characteristics were investigated. Four finds of dusts generated in the typical domestic industry were used, which were coke dust from a steel manufacturing process, cement dust from a cement manufacturing process, flu ash from a fluidized-bed combustor, and incinerator ash from a waste plastics incinerator. The physicochemical properties of the neutralized fabric filter were analyzed in terms of changes in tensile strength and initial elastic modulus under $SO_2$ and $NO_2$ atmospheres, mean flow pore pressure, bubble point pore diameter, mean flow pore diameter, and pore size distribution. In addition, the pressure drop, dust penetration, and figure of merit for the fabric filter were investigated in a bench-scale filter testing unit. The pressure drop increased as the filtration velocity and dust loading increased, and its increasing shape depended on the type of dust. The dust penetration rapidly decreased as the dust loading increased irrespective of the type of dust. The figures of merit for the fabric filters increased in the early stage of filtration and then showed rapid decreases followed maintaining a constant level.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.99-100
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• 2001

보일러, 소각로 등의 연소공정이나, 금속 용융과정 중에 발생하는 분진은 대부분 여과집진장치에 의해 처리된다. 이러한 연소, 금속용융 공정의 배가스는 매우 고온이기 때문에 공냉식이나 수냉식의 배가스 냉각장치를 거친 후 여과집진장치로 유입된다. 고온 배가스 냉각장치는 집진장치의 설치비를 가중시킬 뿐만 아니라 운전유지비의 상승을 초래한다. 따라서 고온에서도 집진성능을 유지할 수 있는 여과포의 개발이 요구되었고, 국외 유명 여과포 제조업체를 중심으로 고온적용 여과포 개발이 활발히 진행되어 왔다. (중략)

• Korean Chemical Engineering Research
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• v.40 no.6
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• pp.725-728
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• 2002

A series of fabric filters including P-84, Nomex and PTFE were coated with a commercial $V_2O_5/TiO_2$ catalyst as an effort to develop a functional fabric filter of simultaneous removal of dust and NOx. The coating methods employed are sol-gel coating method, spray coating method and dip coating method, and the effects of coating method on NOx removal performance of functional fabric filter were investigated. Experimental conditions are as follows: the temperatures of $100-250^{\circ}C$ which are the normal operating temperature range of fabric filters, the space velocity of $5,000hr^{-1}$, the oxygen concentration of 6%, and the $NH_3/NO$ ratio of 1.0. Results showed that the sol-gel coating method gave the best NOx removal performance mainly due to its ability in controlling the amount of catalyst and uniform coating.

• Journal of Energy Engineering
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• v.7 no.1
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• pp.103-112
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• 1998

A high temperature fabric filter was developed and characterized in order to solve the various problems encountered in the operation of industrial fabric filters. Four kinds of dusts generated in the typical domestic industry were used for its characterization, coke dust from a steel manufacturing process, cement dust from a cement manufacturing process, fly ash from a fluidized-bed combustor, and incinerator ash from a waste plastics incinerator. The physical and chemical properties of the high temperature fabric filter were analyzed in terms of mean flow pore pressure, bubble point pore diameter, mean flow pore diameter, pore size distribution, and the changes in tensile strength and initial elastic modulus under $SO_2$ and $NO_2$ atmospheres. Pressure drop, dust penetration, and figure of merit for the fabric filter were also investigated in a bench-scale filter testing unit. The fabric filter developed in this study had good physical and chemical filter properties and showed a very applicability to typical industrial dusts treatments.

• Nuclear Engineering and Technology
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• v.16 no.1
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• pp.29-35
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• 1984

Filtration efficiency tests were conducted on a fiberglass mat filter with DOP aerosol having a diameter from 0.l${\mu}{\textrm}{m}$ to 0.45${\mu}{\textrm}{m}$ in the face velocity range of 1cm/sec to 10cm/sec. Filtration of submicron particles by a fibrous filter is characterized by a face velocity. The size of DOP aerosol which has a minimum removal efficiency decreases with increasing the velocity. A numerical solution of the diffusion equation is obtained for a fiberglass mat filter by using "Kuwabara's cell model" for the flow field and Von Mises Transformation for the actual flow around a fiberglass. The present theoretical results agree quite well with the experimentals for fiberglass mat. This result could be contributed to predict the removal efficiency on an air filter and to optimize the operating condition of an air purification system with a filter. a filter.