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公开(公告)号：US11052324B2
公开(公告)日：2021-07-06
申请号：US16545172
申请日：2019-08-20
Applicant: ExxonMobil Research and Engineering Company
Inventor： Robert Piszczek , Philippe D'Hooghe , David A. Hokanson , Erik Kluwen
Abstract: Systems and methods are provided for improving process control of separation systems that include one or more dividing walls within a single column. It has been discovered that improved process control can be achieved by controlling the dividing wall columns based on energy balance instead of mass balance. The energy balancing can be performed in part based on controlling temperature at a plurality of locations on the feed side within a first divided portion of the column. Using energy balancing based on temperature control at a plurality of locations on the feed side can facilitate maintaining the operation of the dividing wall columns within a single region of phase space that can be suitably approximated by linear models. This can allow conventional process controllers to manage the manipulated and controlled variables. In addition to controlling the temperature at a plurality of locations on the feed side, a plurality of other characteristics can be used as manipulated or controlled variables. Optionally, a multivariable controller can be used to provide further improved control of the column.
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公开(公告)号：US10918967B2
公开(公告)日：2021-02-16
申请号：US16137750
申请日：2018-09-21
Applicant: ExxonMobil Research and Engineering Company
Inventor： Robert Piszczek , Michael L. Hergenrother , Brian D. Albert , Jose X. Simonetty , Brian W. Heins , Vikram Singh , Zhonghcheng Wang
Abstract: Systems and methods are provided for separating a feedstock into a plurality of separation products using dividing wall column technology that includes a plurality of dividing walls. Including a plurality of dividing walls in the column can provide reduced energy consumption and reduced equipment footprint for production of a plurality of high purity distillation products. The systems and methods can allow for separation of a large number of products from a feed while having a reduced or minimized number of liquid splits and/or vapor splits.
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3.发明申请公开(公告)号：US20200087229A1
公开(公告)日：2020-03-19
申请号：US16545172
申请日：2019-08-20
Applicant: ExxonMobil Research and Engineering Company
Inventor： Robert Piszczek , Philippe D'Hooghe , David A. Hokanson , Erik Kluwen
Abstract: Systems and methods are provided for improving process control of separation systems that include one or more dividing walls within a single column. It has been discovered that improved process control can be achieved by controlling the dividing wall columns based on energy balance instead of mass balance. The energy balancing can be performed in part based on controlling temperature at a plurality of locations on the feed side within a first divided portion of the column. Using energy balancing based on temperature control at a plurality of locations on the feed side can facilitate maintaining the operation of the dividing wall columns within a single region of phase space that can be suitably approximated by linear models. This can allow conventional process controllers to manage the manipulated and controlled variables. In addition to controlling the temperature at a plurality of locations on the feed side, a plurality of other characteristics can be used as manipulated or controlled variables. Optionally, a multivariable controller can be used to provide further improved control of the column.
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公开(公告)号：US09266047B2
公开(公告)日：2016-02-23
申请号：US14323231
申请日：2014-07-03
Applicant: ExxonMobil Research and Engineering Company
Inventor： Robert Piszczek , Todd P. Marut , Brian D. Albert , Vikram Singh , Simon Y. Yeung
CPC classification number: B01D45/08 , B01D45/04 , B01D45/16 , B01D50/002 , F01M13/04 , F01M2013/0433
Abstract: Vane type mist eliminator segments are arranged in a plurality of tiers at separate vertically spaced locations in a tower, typically of the upright, cylindrical type, with the eliminator at each tier covering only a portion of the cross section of the tower. The eliminator segment(s) in each tier are laterally displaced in the tower from the adjacent vertically spaced eliminator segments to form a staggered configuration for the segments. Each mist eliminator preferably extends over 50-70% of the cross-sectional area of the tower to leave an open flow passage in the tier; the staggering of the segments and the associated flow passages defines an upward tortuous or zig-zag open flow path for vapors ascending the tower through the open flow passages when the eliminator segment(s) become fouled in use.
Abstract translation: 叶片式除雾器段在塔中的分开的垂直间隔的位置处布置成多个层，通常为直立的圆柱形，每层的消除器仅覆盖塔的横截面的一部分。 每个层中的消除器段在塔中从相邻的垂直间隔的消除器段横向移位，以形成用于段的交错构造。 每个除雾器优选地延伸超过塔的横截面面积的50-70％以在层中留下开放的流动通道; 段和相关联的流动通道的交错限定了当消除器段在使用中被弄脏时，向上弯曲或向上弯曲的开口流动路径，用于通过开放流动通道升高塔的蒸气。
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