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公开(公告)号:US20190185962A1
公开(公告)日:2019-06-20
申请号:US15845113
申请日:2017-12-18
Applicant: Air Products and Chemicals, Inc.
Inventor: Martin Lawrence , Petr Tlamicha
Abstract: A method of melting an aluminum charge having no more that 4% salt by mass, including during a melting phase, introducing fuel and oxidant via a burner operating at a first firing rate, the fuel and oxidant reacting to form a combustion zone above the aluminum charge, terminating the melting phase and commencing a transition phase when the aluminum charge is nearly completely molten, during the transition phase, reducing the firing rate of the burner to a second firing rate lower than the first firing rate, introducing a non-oxidizing gas at a first velocity to form a non-oxidizing zone between the combustion zone and the aluminum charge, and allowing the aluminum charge to become completely molten, and terminating the transition phase and commencing a tapping phase after the aluminum charge has become completely molten, and during the tapping phase, pouring the molten aluminum charge out of the furnace.
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公开(公告)号:US11740022B2
公开(公告)日:2023-08-29
申请号:US16935248
申请日:2020-07-22
Applicant: Air Products and Chemicals, Inc.
Inventor: Martin Lawrence , Avishek Guha , Reed Jacob Hendershot
IPC: F27B3/28 , F27D19/00 , F27B7/42 , F27B14/20 , F27B9/28 , F27D21/00 , C22B7/00 , C22B13/02 , C22B15/00 , C22B21/00
CPC classification number: F27B3/28 , F27B7/42 , F27B14/20 , F27D19/00 , C22B7/00 , C22B7/001 , C22B13/025 , C22B15/003 , C22B21/00 , F27B9/28 , F27D21/00 , F27D2019/0003 , F27D2019/0006 , F27D2019/0028 , F27D2019/0087 , Y02P10/20
Abstract: A control scheme for a furnace can use real-time and historical data to model performance and determine relationships between different data and performance parameters for use in correcting suboptimal performance of the furnace in real-time. Operational parameters can be logged throughout the cycle for all cycles for a period of time in order to establish a baseline. This data can then be used to calculate the performance of the process. A regression analysis can be carried out in order to determine which parameters affect different aspects of performance. These relationships can then be used to predict performance during a single cycle in real-time and provide closed or open loop feedback to control furnace operation to result in enhanced performance.
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公开(公告)号:US11441206B2
公开(公告)日:2022-09-13
申请号:US15989945
申请日:2018-05-25
Applicant: Air Products and Chemicals, Inc.
Inventor: Shailesh Pradeep Gangoli , Avishek Guha , Anshu Gupta , Reed Jacob Hendershot , Michael J. Gallagher , Martin Lawrence , Petr Tlamicha
Abstract: A system and method of controlling a metal melting process in a melting furnace, including determining at least one furnace parameter characterizing a melting furnace, adding a charge containing solid metal into the melting furnace, detecting at least one charge parameter characterizing the charge, firing a burner into the melting furnace to provide heat to melt the charge, and exhausting burner combustion products from the furnace, detecting at least one process parameter characterizing progress of melting the charge, calculating a furnace efficiency based on the at least one furnace parameter, calculating a predicted process pour readiness time based on the at least one charge parameter, the at least one process parameter, and the furnace efficiency, and controlling the metal melting process based on the predicted process pour readiness time.
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公开(公告)号:US20220026147A1
公开(公告)日:2022-01-27
申请号:US16935248
申请日:2020-07-22
Applicant: Air Products and Chemicals, Inc.
Inventor: Martin Lawrence , Avishek Guha , Reed Jacob Hendershot
IPC: F27B3/28
Abstract: A control scheme for a furnace can use real-time and historical data to model performance and determine relationships between different data and performance parameters for use in correcting suboptimal performance of the furnace in real-time. Operational parameters can be logged throughout the cycle for all cycles for a period of time in order to establish a baseline. This data can then be used to calculate the performance of the process. A regression analysis can be carried out in order to determine which parameters affect different aspects of performance. These relationships can then be used to predict performance during a single cycle in real-time and provide closed or open loop feedback to control furnace operation to result in enhanced performance.
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公开(公告)号:US10669609B2
公开(公告)日:2020-06-02
申请号:US15845113
申请日:2017-12-18
Applicant: Air Products and Chemicals, Inc.
Inventor: Martin Lawrence , Petr Tlamicha
Abstract: A method of melting an aluminum charge having no more that 4% salt by mass, including during a melting phase, introducing fuel and oxidant via a burner operating at a first firing rate, the fuel and oxidant reacting to form a combustion zone above the aluminum charge, terminating the melting phase and commencing a transition phase when the aluminum charge is nearly completely molten, during the transition phase, reducing the firing rate of the burner to a second firing rate lower than the first firing rate, introducing a non-oxidizing gas at a first velocity to form a non-oxidizing zone between the combustion zone and the aluminum charge, and allowing the aluminum charge to become completely molten, and terminating the transition phase and commencing a tapping phase after the aluminum charge has become completely molten, and during the tapping phase, pouring the molten aluminum charge out of the furnace.
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