Can brightness pyrometers measure olefins plant's furnace-tube temperature accurately

Journal Article · Mon May 02 04:00:00 EDT 1983 · Oil Gas J.; (United States)

OSTI ID:5551332

Van Dorschot, B P.J.; Hesselman, I A.M.; Vanden Berg, W H

This paper investigates and compares a number of instruments from different manufacturers on the basis of their appropriateness for measuring temperature ranges in furnace tubes. It was found that instruments from different manufacturers which used the same measurement principle gave comparable systematic errors. It was also found that brightness pyrometers operating in the infrared region were best suited for use in pyrolysis furnaces. Ratio or two-color pyrometers were found unsuitable for the measurement of furnace-tube temperatures. They should be considered, the authors state, only for objects whose temperatures are significantly higher than that of the environment. The applicability of pyrometry should be investigated, they further state, for every furnace for which tube temperature measurement is contemplated. The purpose of such an investigation should be to select the most suitable type of pyrometer and to establish the accuracy of the measurements. The latter purpose arises because it is impossible to apply a correction to compensate for systematic measurement errors caused by such factors as radiation from the furnace walls.

• Research Organization: Koninklijke/Shell-Laboratorium, Shell Research B.V., Amsterdam
• OSTI ID: 5551332
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 81:18; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACCURACY
APPROPRIATE TECHNOLOGY
BRIGHTNESS
CHEMICAL PLANTS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DATA COVARIANCES
DECOMPOSITION
ELECTROMAGNETIC RADIATION
FURNACES
INDUSTRIAL PLANTS
INFRARED RADIATION
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
OPTICAL PYROMETERS
PETROCHEMICAL PLANTS
PHYSICAL PROPERTIES
PYROLYSIS
PYROMETERS
RADIATIONS
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES