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公开(公告)号：US20180299076A1
公开(公告)日：2018-10-18
申请号：US15864464
申请日：2018-01-08
发明人： Camilo Mancilla , Joshua David Isom , Ali Esmaili , Suyash Singh
CPC分类号： F17D3/01 , F17D1/04 , F17D5/005 , G05D7/0641
摘要： Controlling flow of gas in a gas pipeline network, wherein flow within each pipeline segment is associated with a direction (positive or negative). Minimum and maximum signed flow rates are calculated for each pipeline segment constituting lower and upper bounds, respectively, for flow in each pipeline segment. A nonlinear pressure drop relationship is linearized within the lower and upper flow bounds to create a linear pressure drop model for each pipeline segment. A network flow solution is calculated, using the linear pressure drop model, and includes flow rates for each pipeline segment to satisfy demand constraints and pressures for each of a plurality of network nodes to satisfy pressure constraints. Lower and upper bounds on the pressure constraint comprise a minimum delivery pressure and a maximum operating pressure, respectively. The network flow solution is associated with control element setpoints used by a controller to control one or more control elements.
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公开(公告)号：US20180106739A1
公开(公告)日：2018-04-19
申请号：US15293653
申请日：2016-10-14
发明人： Ali Esmaili , Joshua David Isom , Suyash Singh
CPC分类号： G01N25/28 , C01B3/38 , C01B2203/0233 , C01B2203/16
摘要： A method and system for determining changes in the catalytic activity of reforming catalyst where an outlet temperature of the catalytic reactor is measured and a temperature approach to equilibrium calculated based on the measured outlet temperature. The temperature approach to equilibrium is compared to an empirical model-based temperature approach to equilibrium calculated for the same operating conditions, the comparison showing changes in the catalytic activity of the reforming catalyst.
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公开(公告)号：US20180106740A1
公开(公告)日：2018-04-19
申请号：US15410883
申请日：2017-01-20
发明人： Ali Esmaili , Joshua David Isom , Suyash Singh
CPC分类号： G01N25/28 , C01B3/38 , C01B3/384 , C01B3/48 , C01B2203/0233 , C01B2203/0288 , C01B2203/0294 , C01B2203/043 , C01B2203/0495 , C01B2203/0827 , C01B2203/0894 , C01B2203/1619 , C01B2203/1657 , G01N33/0047 , Y02P20/52
摘要： A method and system for determining changes in the catalytic activity of reforming catalyst where an outlet temperature of the catalytic reactor is measured and a temperature approach to equilibrium calculated based on the measured outlet temperature. The temperature approach to equilibrium is compared to an empirical model-based temperature approach to equilibrium calculated for the same operating conditions, the comparison showing changes in the catalytic activity of the reforming catalyst.
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公开(公告)号：US09945801B1
公开(公告)日：2018-04-17
申请号：US15293653
申请日：2016-10-14
发明人： Ali Esmaili , Joshua David Isom , Suyash Singh
CPC分类号： G01N25/28 , C01B3/38 , C01B2203/0233 , C01B2203/16
摘要： A method and system for determining changes in the catalytic activity of reforming catalyst where an outlet temperature of the catalytic reactor is measured and a temperature approach to equilibrium calculated based on the measured outlet temperature. The temperature approach to equilibrium is compared to an empirical model-based temperature approach to equilibrium calculated for the same operating conditions, the comparison showing changes in the catalytic activity of the reforming catalyst.
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公开(公告)号：US10337674B2
公开(公告)日：2019-07-02
申请号：US15864464
申请日：2018-01-08
发明人： Camilo Mancilla , Joshua David Isom , Ali Esmaili , Suyash Singh
摘要： Controlling flow of gas in a gas pipeline network, wherein flow within each pipeline segment is associated with a direction (positive or negative). Minimum and maximum signed flow rates are calculated for each pipeline segment constituting lower and upper bounds, respectively, for flow in each pipeline segment. A nonlinear pressure drop relationship is linearized within the lower and upper flow bounds to create a linear pressure drop model for each pipeline segment. A network flow solution is calculated, using the linear pressure drop model, and includes flow rates for each pipeline segment to satisfy demand constraints and pressures for each of a plurality of network nodes to satisfy pressure constraints. Lower and upper bounds on the pressure constraint comprise a minimum delivery pressure and a maximum operating pressure, respectively. The network flow solution is associated with control element setpoints used by a controller to control one or more control elements.
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公开(公告)号：US09897259B1
公开(公告)日：2018-02-20
申请号：US15490268
申请日：2017-04-18
发明人： Camilo Mancilla , Joshua David Isom , Ali Esmaili , Suyash Singh
CPC分类号： F17D3/01 , F17D1/04 , F17D5/005 , G05D7/0617
摘要： Controlling flow of gas in a gas pipeline network, wherein flow within each pipeline segment is associated with a direction (positive or negative). Minimum and maximum signed flow rates are calculated for each pipeline segment constituting lower and upper bounds, respectively, for flow in each pipeline segment. A nonlinear pressure drop relationship is linearized within the lower and upper flow bounds to create a linear pressure drop model for each pipeline segment. A network flow solution is calculated, using the linear pressure drop model, and includes flow rates for each pipeline segment to satisfy demand constraints and pressures for each of a plurality of network nodes to satisfy pressure constraints. Lower and upper bounds on the pressure constraint comprise a minimum delivery pressure and a maximum operating pressure, respectively. The network flow solution is associated with control element setpoints used by a controller to control one or more control elements.
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