몬테칼로 전산모사를 이용한 감마선 투과계측증류탑 진단기술의 타당성 연구
Feasibility Study of Gamma Ray Transmission Technique in Distillation Column Using Monte Carlo Simulation
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The density profile measurement technology by gamma transmission has been widelyused to diagnose processes in the field of refinery and petrochemical industry. This technology canreveal a clue and position of abnormal phenomenon of industrial processes during their operation. In this paper, the feasibility of the gamma transmission technology for detecting changes in theamount of fluid in a distillation column was evaluated by using Monte Carlo simulations. The simulationsassumed that 60Co (1.17, 1.33 MeV) sources and NaI (Tl) detectors (Φ5×5 cm) are locatedin opposite sides of a column and it concurrently moves in vertical direction. To determine thedependency of a spatial resolution on aperture size of a collimator, the simulation model for atray in a column were simulated with the aperture sizes of 1 and 2 cm. The thickness of the highdensity area including a tray and fluid was 7.6 cm in the simulation. The spatial resolution of thetray was 8.2 and 8.5 cm, respectively. As a result, it was revealed that the conventional density profilemeasurement technique is not able to show the deviation of liquid level on a tray in a column
Abstract
The density profile measurement technology by gamma transmission has been widelyused to diagnose processes in the field of refinery and petrochemical industry. This technology canreveal a clue and position of abnormal phenomenon of industrial processes during their operation. In this paper, the feasibility of the gamma transmission technology for detecting changes in theamount of fluid in a distillation column was evaluated by using Monte Carlo simulations. The simulationsassumed that 60Co (1.17, 1.33 MeV) sources and NaI (Tl) detectors (Φ5×5 cm) are locatedin opposite sides of a column and it concurrently moves in vertical direction. To determine thedependency of a spatial resolution on aperture size of a collimator, the simulation model for atray in a column were simulated with the aperture sizes of 1 and 2 cm. The thickness of the highdensity area including a tray and fluid was 7.6 cm in the simulation. The spatial resolution of thetray was 8.2 and 8.5 cm, respectively. As a result, it was revealed that the conventional density profilemeasurement technique is not able to show the deviation of liquid level on a tray in a column
참고문헌 (7)
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