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公开(公告)号：EP1075627A1
公开(公告)日：2001-02-14
申请号：EP99920121.3
申请日：1999-04-28
发明人： ANDERSON, David, K. , COUNTERMAN, Wayne S. , PALKES, Mark , PINNEKAMP, Friedrich , PORLE, Kjell, E., G. , RINI, Michael, J. , SEEBALD, James, D. , SRINIVASACHAR, Srivats , TOQAN, Majed
CPC分类号： F23J15/08 , F22D1/36 , F23J15/006 , F23J2217/102 , F23J2217/50 , F23L15/02 , Y02E20/348
摘要： The flue gas (22) temperature coming from an air preheater (14) to a particulate collection device such as an electrostatic precipitator (16) or fabric filter is reduced to improve the operation of the particulate collection device. This may be done by reducing the exit flue gas (22) temperature from the air preheater (14) or reducing the temperature after exiting. In one embodiment, air in excess of that needed for combustion is passed through the air preheater (14) with the heated excess air either being dumped (34) or used for a variety of purposes (30, 32) in the plant. A particular embodiment involves segmenting the air outlet side of a rotary regenerative air preheater (14) and withdrawing the excess air from the segment where the dust loading is the lowest. Further, additional cooling of the flue gas (22) can be provided by reducing the quantity of primary air that typically bypasses the air preheater (14) and then providing other ways to control the primary air temperature to the pulverizers. The flue gas (22) temperature may also be cooled after the air preheater (14) by heat exchange or spray cooling with water.
摘要翻译： 从空气预热器（14）到例如静电除尘器（16）或织物过滤器的微粒收集装置的烟气（22）温度降低，以改善微粒收集装置的操作。 这可以通过减少来自空气预热器（14）的出口烟气（22）温度或者在离开后降低温度来完成。 在一个实施例中，超过燃烧所需的空气通过空气预热器（14），加热的过量空气或者被倾倒（34）或者用于工厂中的各种目的（30,32）。 一个具体的实施例涉及分段旋转再生式空气预热器（14）的空气出口侧并从灰尘加载量最低的部分抽出过量空气。 此外，通过减少通常绕过空气预热器（14）的一次空气的量并且然后提供其他方式来控制粉碎机的一次空气温度，可以提供烟气（22）的附加冷却。 烟气（22）的温度也可以在空气预热器（14）之后通过与水交换或喷雾冷却而被冷却。
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公开(公告)号：EP0929781B1
公开(公告)日：2000-05-31
申请号：EP97910011.2
申请日：1997-09-30
IPC分类号： F28D19/04
CPC分类号： F28D19/044
摘要： An air preheater (10) has heat transfer elements (40) with a first series of corrugated elements (50) having longitudinally oriented, mutually parallel corrugations (51) formed generally continuously across the lateral direction. Positioned on either side of each of the corrugated elements (50) of the first series are a series of notched plates (52) each having mutually parallel spaced apart notches. Each notch (54) is formed by parallel double ridges (56) projecting transversely from opposite sides and the element (50) has flat sections (58) between the notches (54). The notches (54) are oriented obliquely in mutually opposite directions relative to the corrugations (51) of the adjacent elements (50) whereby the notched elements (52) are in contact with the corrugated elements (50) solely at the points of intersection of the notches (54) and corrugations (51). This produces an increased number of boundary layer breaks and improves heat transfer as well as providing straight line passages through the elements (50).
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公开(公告)号：EP0931238A1
公开(公告)日：1999-07-28
申请号：EP97945554.0
申请日：1997-09-30
IPC分类号： F28D19
CPC分类号： F28D19/047
摘要： A sealing arrangement for a quad sector rotary regenerative air preheater (10) has a rotor (12) rotatably mounted in a housing (14). The rotor (12) has radially extending diaphragms (16) forming compartments (17) and radial seals (66) extending along the edges of the diaphragms. Sector plates (30) are positioned at the axial ends of the rotor (12) to divide the preheater (10) into a flue gas sector (34), a primary air sector (40) and a first secondary air sector (42, 44) adjacent said flue gas sector (34) and said primary air sector (40), and a second secondary air sector (42, 44) positioned adjacent said flue gas sector (34) and said primary air sector (40). The sector plates (30) between the flue gas sector (34) and said secondary air sectors (42, 44) are in sealing engagement with two of the radial seals (66) at all times and the sector plates (62, 64) between the primary air sector (40) and the second air sectors (42, 44) are in sealing engagement with only one of the radial seals (66) at any particular time.
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公开(公告)号：EP0909370A1
公开(公告)日：1999-04-21
申请号：EP97932250.0
申请日：1997-06-23
CPC分类号： F28F27/006
摘要： A rotary regenerative air preheater (10) having a linear scan hot spot detection system (38). This linear scan hot spot detection system (38) has a linear rail assembly (44) generally extending from the center to the periphery of the rotor (14) cavity. The rail assembly (44) preferably supports two carriage assemblies (54) for linear motion thereon. A drive mechanism (58) located on the exterior wall of the air preheater (10) shuttles the carriages (54) between the central portion and the peripheral portion of the rotor (14) cavity. Each carriage assembly (54) supports a single infrared sensor assembly head (66) for detecting hot spots on the air preheater rotor (14). The linear reciprocating motion of the two carriages (54) results in complete detection coverage for the rotating air preheater rotor (14).
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公开(公告)号：EP0891527A1
公开(公告)日：1999-01-20
申请号：EP97917125.0
申请日：1997-03-31
IPC分类号： F28D19
CPC分类号： F28D19/047
摘要： A rotary regenerative air preheater (10) having a rotor (14) mounted to a central rotor post (16) for rotation within a surrounding housing (12) whereby heat absorbent material carried in the rotor (14) is alternately exposed to a flow of heating gas and a gas to be heated. A radial seal assembly (42, 421) including a flexible sealing strip (74) is mounted to the hot end edge of each radially extending partition of the rotor (14) to establish a seal between the partitions and the confronting face of the sector plate of the housing (12) as the rotor (14) is rotated. The flexible sealing strip (74) has a tapered configuration such that the distal edge (80) of the sealing strip (74) and the confronting face of the sector plate (20, 22, 24) define a controlled radially extending gap (86) when the air preheater (10) is in a hot-operating condition. A protective tip (106) is mounted on the distal edge (80) of the flexible sealing strip (74) to prevent premature failure due to edge fracturing. The rigid back support leaf (58) biases the flexible sealing strip (74), pretensioning the flexible sealing strip (74) to eliminate gapping due to gas-air pressure differentials.
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公开(公告)号：EP0347423B1
公开(公告)日：1992-03-18
申请号：EP88902733.0
申请日：1988-02-22
发明人： GROVES, James, Alan
IPC分类号： F28D19/04
CPC分类号： F28D19/044 , Y10S165/043
摘要： A rotary regenerative heat exchanger (2) for transferring heat from a hot fluid to a cold fluid by means of an assembly (30) of heat transfer element which is alternately contacted with the hot and cold fluid. The heat transfer element assembly (30) is comprised of a plurality heat transfer plates (32) stacked alternately in spaced relationship. The spacing between adjacent plates (32) is maintained by spacers which comprise notches (38A, 38B) in the form of bilobed folds crimped in the plates (32) at spaced intervals to prevent nesting between adjacent plates (32), the pitch of the sloping web portions (60) of not more than half of the bilobed folds (38B) in each plate (30) will be opposite in inclination to the pitch of the sloping web portions (60) of at least half of the bilobed folds (38A) in the plates (30).
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7.发明授权REGENERATIVE HEAT EXCHANGER AND A METHOD FOR OPERATING A REGENERATIVE HEAT EXCHANGER 失效交流换热及其操作方法再生式热交换器
公开(公告)号：EP0807237B1
公开(公告)日：2001-01-10
申请号：EP96903291.1
申请日：1996-02-09
发明人： HASSELSTRÖM, Rolf , WESTERLUND, Dag
IPC分类号： F28D19/04
CPC分类号： F28D19/047
摘要： In a regenerative heat exchanger of the kind having a rotor (2) mounted in a casing (1), supports (10) are provided for maintaining a certain clearance between the rotor (2) and movable plates (6, 8) connected to the casing (1) and located closed to the rotor ends. Each support co-operates through a guided surface (62) on a sliding shoe (25) with a guiding surface (61) on a flange (12) on the rotor (2). According to the invention the support (10) is provided with water conduit means (63, 65, 66) ending in the guided surface (62) and being connected to a water source of a pressure sufficient to establish a gap between the guided (62) and the guiding (61) surface so that a cushion of vaporized water is established between the surfaces (61, 62) as the water vaporizes by contact with the guiding surface (61), which is hot, and escapes from the conduit means (63, 65, 66) through the gap.
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公开(公告)号：EP0960314A1
公开(公告)日：1999-12-01
申请号：EP97911836.0
申请日：1997-10-14
IPC分类号： F28D19
CPC分类号： F28D19/044
摘要： A heat transfer element (40) for a rotary regenerative preheater (10) has first and second heat transfer plates (50). The first heat transfer plate (50) defines a plurality of generally equidistantly laterally spaced apart parallel straight notches (52). Each notch (52) has adjacent double ridges (53) extending transversely from opposite sides of the first heat transfer plate (50). Undulations (56) extend between the notches (52). The second heat transfer plate (50) is adjacent the first heat transfer plate (50) and defines a plurality of generally equidistantly laterally spaced apart parallel straight flat sections (54). Undulations (56) extend between the flat sections (54) and the flat sections (54) are spaced apart a distance generally equal to the lateral spacing of the notches (52). The notches (52) of the first heat transfer plate (50) are in contact with the flat sections (54) of the second heat transfer plate (50) to define channels (58) therebetween.
摘要翻译： 用于旋转再生式预热器（10）的传热元件（40）具有第一和第二传热板（50）。 第一传热板（50）限定多个大致等距横向间隔开的平行直槽口（52）。 每个凹口52具有相邻的从第一传热板50的相对侧横向延伸的双脊53。 波形（56）在凹口（52）之间延伸。 第二传热板（50）与第一传热板（50）相邻并且限定多个大致等距横向间隔开的平行笔直平坦部分（54）。 波形（56）在平坦部分（54）之间延伸，并且平坦部分（54）间隔开大致等于切口（52）的横向间距的距离。 第一传热板50的缺口52与第二传热板50的扁平部分54接触以在其间限定通道58。
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公开(公告)号：EP0882205B1
公开(公告)日：1999-10-27
申请号：EP97907849.0
申请日：1997-02-14
发明人： BROPHY, Mark, E. , COX, William, C. , FINNEMORE, Harlan, E. , MATTISON, Glenn, D. , SNIDER, Rex, R. , WONDERLING, Michael, W.
IPC分类号： F28D19/04
CPC分类号： F28D19/044 , Y10T29/49357
摘要： The rotor (14) for a rotary regenerative air preheater is fabricated from a combination of shop assembled rotor sector modules (56) and field assembled components so as to eliminate the double plate diaphragms (34) of conventional modular rotors (14). The shop assembled modules (56) comprise one or more sectors (58, 60) and the field assembled components fit between the spaced shop assembled modules (56) spaced around the rotor hub (36). The support gratings (66) between the diaphragm plates (68) support modular heat exchange baskets (22) which are loaded into the rotor (14) radially from the periphery.
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公开(公告)号：EP0882205A1
公开(公告)日：1998-12-09
申请号：EP97907849.0
申请日：1997-02-14
发明人： BROPHY, Mark, E. , COX, William, C. , FINNEMORE, Harlan, E. , MATTISON, Glenn, D. , SNIDER, Rex, R. , WONDERLING, Michael, W.
IPC分类号： F28D19
CPC分类号： F28D19/044 , Y10T29/49357
摘要： The rotor (14) for a rotary regenerative air preheater is fabricated from a combination of shop assembled rotor sector modules (56) and field assembled components so as to eliminate the double plate diaphragms (34) of conventional modular rotors (14). The shop assembled modules (56) comprise one or more sectors (58, 60) and the field assembled components fit between the spaced shop assembled modules (56) spaced around the rotor hub (36). The support gratings (66) between the diaphragm plates (68) support modular heat exchange baskets (22) which are loaded into the rotor (14) radially from the periphery.
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