近年來歐、美、日等工業先進國家致力發展二十一世紀的新式先進燃煤技術，如整合型氣化煤複循環系統(IGCC, Integrated gasification combined-cycle)，這些系統均會產生高溫高壓之氣體及飛灰，在進入氣渦輪機前必須有效的控制，方能使系統有效運作。 上年度計畫(名稱：淨煤發電高溫氣體淨化技術發展)已成功發展出一活動組合式三維流動式兩階段顆粒床過濾器模型，本年度計畫將繼續採用此三維模型，依據去年二維流場與三維過濾器初步過濾實驗所得之結果為基礎，延續進行並開發能達到更高冷性能效率之兩階段顆粒床過濾系統。計畫中將針對影響過濾器效率的參數部分進行探討，如進口自由面風速、濾材質量流率、床體間的壓降及粗細顆粒床高度等，盼以進一步解析兩階段過濾器系統中最重要的過濾效率指標。 本計畫中將採用三種進口自由面風速(10 cm/s、15 cm/s、20 cm/s)搭配三種濾材質量流率(110 g/min、220 g/min、330 g/min)進行冷性能過濾效率測試，期間測量紀錄床體間壓降變化並與過濾效率結果進行比較分析，另測試中也將改變兩種濾材顆粒床水平高度，藉以比較對過濾效率及床體整體壓降造成的影響。 上述計畫三維冷性能兩階段過濾系統測試模型實驗所得之結果，將可作為未來進行三維熱模實驗的基礎，計畫的最終目標則是可為建立商業化之高溫燃氣流動式兩階段顆粒床過濾系統而邁進。 The Integrated gasification combined-cycle system for power generation and the advanced coal-fired power plants have been developed in United States, Europe and Japan in recent years. High temperature syngas is generated during the gasification process using biomass or coal. The high temperature syngas contains many dust particulates and fly ashes which should be filtrated before entering gas turbine. This project extended the study of previous year with the successful development of a 3D two-stage filtration system. In accordance to the results of previous year, the higher performance of 3D two-stage filtration system will be pursued. The parameters of inlet surface velocity, media mass flow rate, pressure drop, level of granular bed which may affect the efficiency of filtration in this 3D two-stage filtration will be discussed. During the cold test, three inlet surface velocities (10 cm/s, 15 cm/s, 20 cm/s) and three media mass flow rates (110 g/min, 220 g/min, 330 g/min) will be employed. The measurements of pressure drop and efficiency of filtration in this two-stage filtration system will be recorded and analyzed. The level of granular bed of two sized filter media will be changed during cold test in order to compare the effects of filtration efficiency and pressure drop. With the result of this project, it is helpful to design the 3D two-stage moving granular bed for the hot test. The final goal of the project, is to establish the design rules for the commercialized moving granular bed filter. 研究期間：10101~ 10112
