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公开(公告)号：US20190323910A1
公开(公告)日：2019-10-24
申请号：US16464980
申请日：2016-11-30
申请人： Arvos Ljungstrom LLC
发明人： David W. Bintz , Travis N. Tozer
摘要： A trunnion bolt monitoring system for an air preheater trunnion has a plurality of trunnion bolts through which extends a respective blind bore each in gas tight connection at its open end to a pressurized manifold comprising piping and T-fittings. Depressurisation of the manifold indicative of fatigue cracking of any one bolt is detected by electrical monitoring of three pressure sensors.
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公开(公告)号：US11073341B2
公开(公告)日：2021-07-27
申请号：US16319952
申请日：2017-07-24
申请人： Arvos Ljungstrom LLC
摘要： A basket for an air preheater includes two metallic frames each having two corner pieces and two connector pieces. For each frame, one of the connector pieces is secured to one end of each of the corner pieces and another of the connector pieces is secured to an opposite end of each of the corner pieces thereby forming a rectangular opening in each frame. The basket includes two heavy gauge metallic sheets that are secured to the corner pieces, thereby spacing the frames equally apart from and parallel to one another thereby forming a channel between two of the sheets.
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公开(公告)号：US20190383562A1
公开(公告)日：2019-12-19
申请号：US16452954
申请日：2019-06-26
申请人： Arvos Ljungstrom LLC
IPC分类号： F28D19/04
摘要： Disclosed is a heat transfer assembly for a rotary regenerative preheater. The heat transfer assembly includes a plurality of heat transfer elements stacked in spaced relationship to each other in a manner such that each notch from a plurality of notches of one of the heat transfer element rests on respective flat sections from a plurality of flat sections of the adjacent heat transfer elements to configure a plurality of closed channels, each isolated from the other, wherein each of the channels has a configuration in a manner such that each of corrugation sections from a plurality of corrugation sections of one of the heat transfer elements faces respective undulation sections from a plurality of undulation sections of the adjacent heat transfer elements.
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公开(公告)号：US20190301735A1
公开(公告)日：2019-10-03
申请号：US16316215
申请日：2017-01-13
申请人： Arvos Ljungstrom LLC
发明人： Kevin O'Boyle , Glenn D. Mattison
IPC分类号： F23J15/02 , B01D53/50 , F23J15/00 , B01D53/30 , F23J15/06 , F22B37/02 , F22B37/00 , F23J15/08
摘要： A method for improving effectiveness of a steam generator system includes providing air to an air preheater at a mass flow such that the air preheater has a cold end outlet temperature defined by the improved air preheater operating with increased heat recovery (HR) of at least 1% calculated according to the equation: HR=100%×((Tgi−TgoAdvX)/(Tgi−TgoSTD)−1). The method requires either reducing the amount of heat that flows into the air preheater from the flue gas and/or increasing the amount of heat extracted from the flue gas. The method includes mitigating SO3 in the flue gas which is discharged directly from the air preheater to a particulate removal system and then directly into a flue gas desulfurization system. The method includes extracting heat from the Flue gas to create equipment preheat and/or flue gas stack reheat air with the latter being fed to heat the flue gas prior to entering a discharge stack to raise the temperature of the flue gas to mitigate visible plume exiting and to mitigate corrosion in, the discharge stack.
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公开(公告)号：US20190120566A1
公开(公告)日：2019-04-25
申请号：US16091358
申请日：2017-04-05
申请人： Arvos Ljungstrom LLC
发明人： Jeffrey O'Boyle
IPC分类号： F28D19/04
摘要： A rotary pre-heater having a cold-end rotor and a hot-end rotor including an insulation assembly including a plurality of elongate retainer elements. Each of the retainer elements has a root end adapted to be held in fixed relationship to the cold-end rotor and a distal end proximate to the hot-end rotor. Portions of each of the plurality of retainer elements are adapted for circumferential movement.
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公开(公告)号：US10267517B2
公开(公告)日：2019-04-23
申请号：US15205243
申请日：2016-07-08
申请人： ARVOS Ljungstrom LLC
发明人： Kevin O'Boyle , Glenn D. Mattison
摘要： A method for improving effectiveness of a steam generator system includes providing air to an air preheater in excess of that required for combustion of fuel and providing the air at a mass flow such that the air preheater has a cold end metal temperature that is no less than a water dew point temperature in the air preheater and such that the cold end metal temperature is less than a sulfuric acid dew point temperature. The method includes mitigating SO3 in the flue gas which is discharged directly from the air preheater to a particulate removal system and then directly into a flue gas desulfurization system. Flue gas reheat air is fed from the air preheater to heat the flue gas prior to entering a discharge stack to raise the temperature of the flue gas to mitigate visible plume exiting and to mitigate corrosion in the discharge stack.
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公开(公告)号：US11236949B2
公开(公告)日：2022-02-01
申请号：US16473444
申请日：2017-04-10
申请人： Arvos Ljungstrom LLC
摘要： A heat transfer sheet assembly for a rotary regenerative heat exchanger has first and second heat transfer sheet elements stacked one against the other with a first repeat of a first profile on one sheet element opposing a second repeat of a second profile on the other sheet element. The sheet elements are spaced apart by a plurality of wide-gauged parallel sheet spacing features of the first profile repeat RI of the second profile repeat to form a generally close sided elongate channel for gaseous flow therethrough. The second profile of repeat includes an elongate fifth sheet spacing feature in the form of a lobe contacting undulations of the adjacent first profile of repeat.
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公开(公告)号：US20210285637A1
公开(公告)日：2021-09-16
申请号：US16316170
申请日：2017-07-10
申请人： Arvos Ljungstrom LLC
IPC分类号： F23J15/02 , B01D53/30 , B01D53/50 , F23J15/06 , F23J15/08 , F22B37/00 , F22B37/02 , F23J15/00
摘要： A method for improving effectiveness of a steam generator system includes providing a steam generator system including a steam generator vessel, an air supply system and an air preheater. The air supply system is in communication with the steam generator vessel through the air preheater and the steam generator vessel is in communication with the air preheater. The air supply system provides a first amount of air to the air preheater. At least a portion of the first amount of air is provided to the steam generator vessel. A flue gas mixture is discharged from the steam generator vessel. At least a portion of the flue gas mixture flows into the air preheater. SO3 in the flue gas mixture is mitigated before the flue gas mixture enters the air preheater.
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公开(公告)号：US11092387B2
公开(公告)日：2021-08-17
申请号：US16452954
申请日：2019-06-26
申请人： Arvos Ljungstrom LLC
摘要： Disclosed is a heat transfer assembly for a rotary regenerative preheater. The heat transfer assembly includes a plurality of heat transfer elements stacked in spaced relationship to each other in a manner such that each notch from a plurality of notches of one of the heat transfer element rests on respective flat sections from a plurality of flat sections of the adjacent heat transfer elements to configure a plurality of closed channels, each isolated from the other, wherein each of the channels has a configuration in a manner such that each of corrugation sections from a plurality of corrugation sections of one of the heat transfer elements faces respective undulation sections from a plurality of undulation sections of the adjacent heat transfer elements.
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公开(公告)号：US10704840B2
公开(公告)日：2020-07-07
申请号：US16325469
申请日：2017-02-10
申请人： Arvos Ljungstrom LLC
发明人： Jeffrey O'Boyle
IPC分类号： F28D19/00 , F28D19/04 , F16J15/3232 , F16J15/3268 , F16J15/3292
摘要： A seal assembly includes a first leaf with a spacer secured proximate a distal end of the first leaf. The spacer extends along the first leaf from an outboard end of the spacer to an inboard end thereof. The seal assembly includes a second leaf that is secured to the spacer so that the distal end is positioned proximate the outboard end of the spacer. The second leaf has an elongate section that extends away from the distal end. The elongate section extends beyond the inboard end of the spacer and terminates along the first bend of the first leaf, so that a portion of the second leaf proximate the terminus of the second leaf is slidingly moveable relative to and in compressive engagement with a portion of the first bend, and a portion of the second elongate section is spaced apart from the first elongate section.
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