Fast estimation of reboiler reliability

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · Chemical Engineering

OSTI ID:110156

Durand, A A; Bonilla, M A.O. ^[1]

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1. Instituto Mexicano del Petroleo, Mexico City (Mexico)

The problems one faces in evaluating the reliability of a reboiler design, or in judging the effect of modifications of process conditions on reboiler operation can be complex. To carry out such evaluations, it is necessary for engineers to perform some calculations to determine: heat transfer coefficients in convection boiling; temperature difference, for the onset of nucleate boiling; heat transfer coefficients in the nucleate boiling region; critical heat flux or critical temperature difference; minimum {Delta}T for film boiling; and heat transfer coefficients for the film boiling region. There are a number of correlations, graphs, and computer programs that can be used to make these calculations. However, besides being laborious, it is still difficult to get a suitable picture of the overall problem from just this data. To simplify the process, and to have a better understanding of the problem, a map of the different boiling regions and their boundaries is presented here. With this map it is possible to locate the design or operating point of a specific kettle reboiler among all the boiling regions, enabling one to make a clearer analysis of its behavior. The parameters used to develop this map are described.

• OSTI ID: 110156
• Journal Information: Chemical Engineering, Journal Name: Chemical Engineering Journal Issue: 8 Vol. 102; ISSN CHEEA3; ISSN 0009-2460
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOILING
CALCULATION METHODS
CHEMICAL ENGINEERING
DIAGRAMS
EQUATIONS
HEAT EXCHANGERS
PERFORMANCE
RELIABILITY