公开(公告)号：US5313800A

公开(公告)日：1994-05-24

申请号：US011605

申请日：1993-02-01

申请人： Henry E. Howard ,  Dante P. Bonaquist ,  William M. Canney ,  William A. Nash

发明人： Henry E. Howard ,  Dante P. Bonaquist ,  William M. Canney ,  William A. Nash

IPC分类号： F25J3/04

CPC分类号： F25J3/04412 ,  F25J3/04678 ,  F25J3/048 ,  F25J3/04848 ,  F25J2290/10 ,  Y10S62/924

摘要： The present invention is a process for maximizing the recovery of argon at high argon recovery rates from an air separation system having a high and low pressure distillation column containing multiple distillation stages of rectification and having a sidearm column for argon recovery. A compositional measurement is made of a process variable at one or more preselected stages of rectification which have been identified as exhibiting high sensitivity to plant process variations. The total nitrogen content in the argon feed may then be computed by simulated mathematical correlation from such compositional measurement.

摘要翻译： 本发明是一种从具有高精馏塔和高压蒸馏塔的空气分离系统以高氩回收率使氩气回收最大化的方法，所述蒸馏塔具有多个精馏馏分，并具有用于回收氩气的侧臂塔。 组成测量由一个或多个预选的精馏阶段的过程变量构成，这些阶段已被确定为对植物过程变化表现出高度敏感性。 然后可以通过来自这种组成测量的模拟数学相关性来计算氩进料中的总氮含量。

公开(公告)号：US5522224A

公开(公告)日：1996-06-04

申请号：US290123

申请日：1994-08-15

申请人： William M. Canney

发明人： William M. Canney

IPC分类号： F17C13/02 ,  C01B23/00 ,  F25J3/04 ,  G05B13/04 ,  G05B17/02 ,  F25J3/00

CPC分类号： F25J3/04848 ,  F25J3/04254 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/048 ,  G05B13/048 ,  F25J2205/02 ,  F25J2210/42 ,  F25J2240/40 ,  F25J2290/10 ,  Y10S62/924

摘要： A cryogenic air separation process generates both an intermediate product and an output product. The intermediate product is produced earlier in time than the output product and variations in output product measurements correlate to earlier variations in intermediate product measurements. The process responds to plural independent variable phenomena. The apparatus includes analyzers for providing measures of the intermediate and output products and the independent variable phenomena. A control processor predicts a measure of the intermediate product, based on the independent variable phenomena and output predicted values therefor. A difference is then determined between the current predicted value for the intermediate product and a measure of the intermediate product, to arrive at a prediction error. The processor is responsive to this intermediate product prediction error to further predict both current and future values of the output product so as to enable control actions to be taken with respect to the output product to control impurities therein.

摘要翻译： 低温空气分离过程产生中间产物和输出产物。 中间产品在时间上比产出产品更早地生产，产出测量的变化与中间产品测量的早期变化相关。 该过程响应于多个自变量现象。 该装置包括用于提供中间产品和产品的测量的分析器和独立的可变现象。 控制处理器基于自变量现象和输出预测值来预测中间产品的度量。 然后在中间产品的当前预测值和中间产品的度量之间确定差异，以得到预测误差。 处理器响应于该中间产品预测误差以进一步预测输出产品的当前值和未来值，以便能够对输出产品进行控制动作以控制其中的杂质。

公开(公告)号：US5448893A

公开(公告)日：1995-09-12

申请号：US242391

申请日：1994-05-13

申请人： Henry E. Howard ,  Dante P. Bonaquist ,  William M. Canney ,  William A. Nash

发明人： Henry E. Howard ,  Dante P. Bonaquist ,  William M. Canney ,  William A. Nash

IPC分类号： F25J3/04

CPC分类号： F25J3/04412 ,  F25J3/04678 ,  F25J3/048 ,  F25J3/04848 ,  F25J2290/10 ,  Y10S62/924

摘要： The present invention is a process for maximizing the recovery of argon at high argon recovery rates from an air separation system having a high and low pressure distillation column containing multiple distillation stages of rectification and having a sidearm column for argon recovery. A compositional measurement is made of a process variable at one or more preselected stages of rectification which have been identified as exhibiting high sensitivity to plant process variations. The total nitrogen content in a selected area of the argon sidearm column may then be compensated by simulated mathematical correlation from such compositional measurement.

摘要翻译： 本发明是一种从具有高精馏塔和高压蒸馏塔的空气分离系统以高氩回收率使氩气回收最大化的方法，所述蒸馏塔具有多个精馏馏分，并具有用于回收氩气的侧臂塔。 组成测量由一个或多个预选的精馏阶段的过程变量构成，这些阶段已被确定为对植物过程变化表现出高度敏感性。 然后可以通过来自这种组成测量的模拟数学相关来补偿氩侧臂柱的选定区域中的总氮含量。