Part II. Deployment of Continuous Online Monitoring of Local Tube Metal Temperature of a Refinery Depropanizer Reboiler

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Title Part II. Deployment of Continuous Online Monitoring of Local Tube Metal Temperature of a Refinery Depropanizer Reboiler
Creator Smith, P.J.
Contributor Thornock, J., Smith, S., Hradisky, M., Smith, D., Emett, P., Hardy, M., Daines, K., Harris, B.
Date 2016-09-13
Spatial Coverage Kauai, Hawaii
Subject 2016 AFRC Industrial Combustion Symposium
Description Paper from the AFRC 2016 conference titled Part II. Deployment of Continuous Online Monitoring of Local Tube Metal Temperature of a Refinery Depropanizer Reboiler
Abstract Continuous monitoring of local tube metal temperatures of process tubes is a difficult but desired objective for the safe and efficient operation of many process heaters and boilers.; A new measurement technology has been developed (see Part I. paper by the same authors presented at the 2015 AFRC meeting, Salt Lake City) for providing local tube metal; temperatures in such furnaces. With this paper we present the deployment and validation of this technology on the refinery process heater serving as a reboiler for the bottoms of a; depropanizer tower at the HollyFrontier Refinery in Woods Cross, Utah.; The technology brings together the existing process data acquisition on the process heater with high performance computer simulations of the combustion system coupled to; the thermodynamic properties of the multiphase process fluid, and with Bayesian learning from the historical data. By using these technologies together, an instrument model is; constructed to provide the local tube metal temperature throughout the radiant section of the reboiler. The continuous measurement of tube metal temperature is updated as the; existing measurements of operating variables (the process fluid temperature at the inlet and outlet of each coil in the heater, the process composition, process flow rates, and the; combustion stack gas temperature) are updated. The instrument model is calibrated and updated as new data are acquired.; This measurement technology has been tested offline on four months of historical data collected during the fall and winter of 2015. Subsequently, the method has been; hardened for deployment online, calibrated with optical data collected at the refinery, continuously validated with online process data, and deployed at the refinery. This paper; reports on the experience of testing, calibrating, validating, and deploying this technology.
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ARK ark:/87278/s6tx7r92
Setname uu_afrc
Date Created 2018-12-03
Date Modified 2018-12-03
ID 1387937
Reference URL https://collections.lib.utah.edu/ark:/87278/s6tx7r92