Apparatus And Methods To Monitor And Control Cyclic Process Units In A Steady Plant Environment
AssigneeAir Products and Chemicals, Inc.
InventorsErdem Arslan, Debashis Neogi, Xianming Jimmy Li, Pratik Misra
Life of this patent
Estimating the term…
Abstract
Apparatus and methods are disclosed that allow for the monitoring and analysis of production process data for a multi-step asynchronous cyclic production process (e.g. pressure swing adsorption) in a steady state plant (such as a steam methane reforming plant). Data collected from cooperating sensors is processed applying a moving window discrete Fourier transform (DFT). The transformed data can be further analyzed in the broader steady-state plant environment to accurately detect any process anomalies and avoid false alarms.
Claims17
Monitoring and analysis apparatus for use in a production plant, the apparatus comprising a computing processor operable to:
- receive operational data from one or more sensors operative to sense and communicate data representative of the operation of at least two production unit components utilized in the production process over a selected time interval;
- process the received operational data to transform the received operational data from a time domain to generated frequency domain data having harmonics;
- process the frequency domain data to calculate a value of an amplitude of each of at least one peak of the harmonics of the frequency domain data;
- identify the value of the amplitude of the peak of a significant harmonic of the frequency domain data for each of the at least two production unit components;
- apply a data normalization mathematical function to the identified amplitude values to calculate abnormalities in the identified amplitude values among two selected production unit components of the at least two production unit components as compared to data representative of normal operation amplitude values to generate processed production unit component monitoring data for the two selected production unit components;
- and
- store the generated processed production unit component monitoring data.
A method for monitoring and analyzing production plant operational data comprising:
- receiving operational data from one or more sensors operative to sense and communicate data representative of the operation of at least two production unit components utilized in the production process over a selected time interval;
- processing the received operational data to transform the received operational data from a time domain to generated frequency domain data having harmonics;
- processing the frequency domain data to calculate a value of an amplitude of each of at least one peak of the harmonics of the frequency domain data;
- identifying the value of the amplitude of the peak of a significant harmonic of the frequency domain data for each of the at least two production unit components;
- applying a data normalization mathematical function to the identified amplitude values to calculate abnormalities in the identified amplitude values among two selected production unit components of the at least two production unit components as compared to data representative of normal operation amplitude values to generate processed production unit component monitoring data for the two selected production unit components;
- and
- storing the generated processed production unit component monitoring data.
Dependencies are inferred from the claim text.