Abstract:

The high viscosity of quench oil is one of the important factors affecting the long-term stable operation of ethylene plant, and increases the energy consumption of ethylene plant. On-line viscosity measurement has always been a difficulty in the design and production of ethylene plant. The main reasons are the high temperature of on-line measurement and the low on-line viscosity. The temperature and methods for laboratory sampling measurement are usually different from those of on-line viscosity measurement methods, leading to errors in the selection of on-line measuring instruments and the inability to compare the measured data directly. Therefore, on-line viscosity measurement has attracted more and more attention. Through a measurement case, this paper analyzes the relationship between on-line viscosity and laboratory viscosity of quench oil, and accordingly puts forward some solutions to on-line viscosity measurement.

Key words: quench oil, online viscosity, measurement technology