Hot gas filtration system and process for regenerating said system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-046/00
B01D-046/24
출원번호
US-0775290
(2013-02-25)
등록번호
US-9669344
(2017-06-06)
우선권정보
EP-12 157 260 (2012-02-28)
발명자
/ 주소
Heidenreich, Steffen
Haag, Walter
출원인 / 주소
Pall Corporation
대리인 / 주소
Jay, Jeremy
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
The present invention relates to a hot gas filtration system and a process for regenerating such a hot gas filtration system, said filtration system comprising a filter vessel, a tubesheet separating the interior of said filter vessel into a raw gas section and a clean gas section, and a plurality o
The present invention relates to a hot gas filtration system and a process for regenerating such a hot gas filtration system, said filtration system comprising a filter vessel, a tubesheet separating the interior of said filter vessel into a raw gas section and a clean gas section, and a plurality of filter elements. Said filter elements, arranged in two or more groups, are connected to the tubesheet with a clean end and extend with a raw gas portion into the raw gas section. Two or more plenum chambers are accommodated in the clean gas section and groupwise accommodate the clean gas ends of the filter elements, each of said plenum chambers comprising a gas exchange opening providing a direct fluid communication with the clean gas section. The hot gas filtration system furthermore comprises a blowback arrangement comprising a blowback gas reservoir and a blowback gas pipe for each group of filter elements, said blowback gas pipes having an outlet positioned in said clean gas section of the vessel, said outlet of the blowback gas pipes being directed at the gas exchange opening of the plenum chambers, said outlet of said blowback pipe having a free cross-sectional area of from about 10% to about 90% of the free cross-sectional area of said gas exchange opening.
대표청구항▼
1. A hot gas filtration system comprising a filter vessel having an interior,a tubesheet separating the interior of the filter vessel into a clean gas section and a raw gas section, said filter vessel comprising at its raw gas section a raw gas inlet and at its clean gas section a clean gas outlet,a
1. A hot gas filtration system comprising a filter vessel having an interior,a tubesheet separating the interior of the filter vessel into a clean gas section and a raw gas section, said filter vessel comprising at its raw gas section a raw gas inlet and at its clean gas section a clean gas outlet,a plurality of filter elements made of ceramic material or metal, and having a raw gas portion and a clean gas end, said plurality of filter elements being arranged in two or more separate groups of two or more filter elements, said filter elements being connected to the tubesheet with their clean gas ends and extending from the tube sheet with their raw gas portions into the raw gas section of the interior of said vessel,two or more separate plenum chambers accommodated in the clean gas section of the interior of the filter vessel, each separate plenum chamber accommodating the clean gas ends of the filter elements of a corresponding separate group of filter elements, each of said separate plenum chambers comprising a corresponding separate gas exchange opening providing a direct fluid communication of its interior with the clean gas section of the interior of the filter vessel,a blowback arrangement comprising a blowback gas reservoir, and a separate blowback gas pipe for each corresponding separate group of filter elements, the blowback arrangement delivering non-sonic jet pulses of blowback gas from the blowback gas reservoir via the separate blowback gas pipes into the separate plenum chambers via the corresponding separate gas exchange openings such that a volume of clean gas of the clean gas section is sucked into the separate plenum chambers, said separate blowback gas pipes each having a corresponding separate outlet positioned in said clean gas section of the vessel, said corresponding separate outlet of the separate blowback gas pipes being directed at the corresponding separate gas exchange opening of the separate plenum chambers, wherein said corresponding separate outlet of said corresponding separate blowback gas pipe is positioned flush with the upper end of the corresponding separate gas exchange opening of said separate plenum chamber, wherein a gap is present between each corresponding separate outlet of the corresponding separate blowback gas pipe and the upper end of the corresponding separate gas exchange opening of the separate plenum chamber, the gap allowing the non-sonic jet pulses of blowback gas from the blowback gas reservoir to pass via the separate blowback gas pipes into the separate plenum chambers via the corresponding separate gas exchange openings such that a volume of clean gas of the clean gas section is sucked into the separate plenum chambers, said corresponding separate outlet of said blowback pipe having a free cross-sectional area of from about 15% to about 50% of the free cross-sectional area of said corresponding separate gas exchange opening of said separate plenum chambers. 2. The hot gas filtration system of claim 1, wherein the plenum chamber has a non-circular configuration. 3. The hot gas filtration system of claim 1, wherein each blowback pipe has an inner diameter and wherein the blowback arrangement comprises blowback valves, each blowback valve having a nominal diameter, the ratio of the nominal diameter of each blowback valve to the inner diameter of each blowback pipe being from about 0.8 to about 1.1. 4. The hot gas filtration system of claim 3, wherein the blowback valves have an opening time of about 400 msec or less. 5. The hot gas filtration system of claim 4, wherein the blowback valves have an opening time of about 200 msec or less. 6. The hot gas filtration system of claim 3, wherein the ratio of the nominal diameter of each blowback valve to the inner diameter of each blowback pipe being from about 0.9 to about 1.1. 7. The hot gas filtration system according to claim 1, wherein the system comprises a plurality of safety fuses, each filter element being connected at its clean gas end to one of the safety fuses. 8. The hot gas filtration system of claim 1, wherein the free cross-sectional area of the blowback gas pipe amounts to about 20% to about 40% of the free cross-sectional area of the gas exchange opening of the plenum chamber. 9. A process for regenerating a hot gas filtration system, the system comprising: a filter vessel having an interior,a tubesheet separating the interior of the filter vessel into a clean gas section and a raw gas section, said filter vessel comprising at its raw gas section a raw gas inlet and at its clean gas section a clean gas outlet,a plurality of filter elements made of ceramic material or metal, and having a raw gas portion and a clean gas end, said plurality of filter elements being arranged in two or more groups of two or more filter elements, said filter elements being connected to the tubesheet with their clean gas ends and extending with their raw gas portions into the raw gas section of the interior of said vessel,two or more separate plenum chambers accommodated in the clean gas section of the interior of the filter vessel, each separate plenum chamber accommodating the clean gas ends of the filter elements of a corresponding separate group of filter elements, each of said separate plenum chambers comprising a corresponding separate gas exchange opening providing a direct fluid communication of its interior with the clean gas section of the interior of the filter vessel,a blowback arrangement comprising a blowback gas reservoir, and a separate blowback gas pipe for each corresponding separate group of filter elements, said separate blowback gas pipes each having a corresponding separate outlet positioned in said clean gas section of the vessel, said corresponding separate outlet of the separate blowback gas pipes being directed at the corresponding separate gas exchange opening of the separate plenum chambers, wherein said corresponding separate outlet of said corresponding separate blowback gas pipe is positioned flush with the upper end of the corresponding separate gas exchange opening of said separate plenum chamber, wherein a gap is present between each corresponding separate outlet of the corresponding separate blowback gas pipe and the upper end of the corresponding separate gas exchange opening of the separate plenum chamber,the process comprising the blowback arrangement delivering non-sonic jet pulses of blowback gas from the blowback gas reservoir via the separate blowback gas pipes into the separate plenum chambers via the corresponding separate gas exchange openings such that a volume of clean gas of the clean gas section is sucked into the separate plenum chambers, the gap allowing the non-sonic jet pulses of blowback gas from the blowback gas reservoir to pass via the separate blowback gas pipes into the separate plenum chambers via the corresponding separate gas exchange openings such that a volume of clean gas of the clean gas section is sucked into the separate plenum chambers, said corresponding separate outlet of said blowback pipe having a free cross-sectional area of from about 15% to about 50% of the free cross-sectional area of said corresponding separate gas exchange opening of said separate plenum chambers. 10. The process of claim 9, wherein the jet pulse is provided to a fraction of groups of filter elements during continued filtration operation of the remainder of the groups of filter elements.
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이 특허에 인용된 특허 (7)
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