Parametric Study of Sulfur Trioxide Decomposer in a Small-Scale Test Loop Facility  

作　　者：Jong-Ho Kim Ki-Young Lee Yong-Wan Kim 

机构地区：[1]Korea Atomic Energy Research Institute, Republic of Korea

出　　处：《Journal of Chemistry and Chemical Engineering》2011年第10期890-896,共7页化学与化工（英文版）

摘　　要：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 

分 类 号：TQ172.18[化学工程—水泥工业] S219.032.3[化学工程—硅酸盐工业]