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Parametric Study of Sulfur Trioxide Decomposer in a Small-Scale test loop Facility

Journal of Chemistry and Chemical Engineering 2011年第10期5卷 890-896页

作者： Jong-Ho Kim Ki-Young Lee Yong-Wan Kim Korea Atomic Energy Research Institute Republic of Korea

A High Temperature Gas Cooled Reactor （HTGR） with an outlet coolant temperature of 950 ℃ is considered as an efficient reactor to couple with the thermo-chemical Sulfur Iodine （SI） cycle for a hydrogen production. The test loop was installed in the Korea Atomic Energy Research Institute （KAERI） facility to confirm the integrity of the sulfur trioxide decomposer, one of the key components in the test loop, under HTGR operating conditions. In this paper, the simulation using Aspen plus, a chemical process simulator, was made to evaluate the performance of a sulfur trioxide decomposer. The simulation indicated that at least 10 kW heat needs to be supplied to the sulfur trioxide decomposer in the test loop when the sulfuric acid flowrate is 0.5 kg/min. The simulation flowsheet was obtained and the material balance around the sulfur trioxide decomposer was determined in case of 10 kW heat input and 0.5 kg/min flowrate of liquid sulfuric acid. The parametric study was carried out for sulfur trioxide decomposer. It indicated that the moles of sulfur dioxide produced at the decomposer increases as the operating temperature increases and is decreasing as the operating pressure becomes higher at a given temperature. The parametric study also indicated water vapor removal out of the decomposer is a less effective method to increase the sulfur trioxide conversion ratio.

关键词： SI cycle hydrogen production sulfur trioxide decomposer test loop

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STUDY ON SAFETY VALVE testING loop OF HTR-10 PRIMARY loop PRESSURE RELIEF SYSTEM

STUDY ON SAFETY VALVE TESTING LOOP OF HTR-10 PRIMARY LOOP PR...

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第十三届国际核工程大会

作者： Jianling DongINET Tsinghua University Beijing

＜正＞ 10MW High Temperature Gas Cooled Reactor （HTR-10） was constructed in Tsinghua University and reached its first full power operation in January of 2003. Steam Generator （SG） heat transfer tubes of 10MW High Temperature Gas Cooled Reactor （HTR-10） are protective screens between the primary loop of helium and the secondary loop of water and steam. Water and steam will enter into the primary loop from the secondary loop if the SG heat transfer tubes rupture, which is one of the reasons to lead to increase of the primary

关键词： High temperature gas cooled reactor Primary loop pressure relief system Safety relief valve Set point pressure Discharge capacity test loop

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