【摘要】 采用自制的湿法脱硫装置,以氧化镁-海水为脱硫剂,用于中远集运"冰河"号集装箱船的船舶废气脱硫试验研究.分别采用单纯海水法和镁基-海水法(M&S法),对比研究了空塔气速、液气比和pH值对脱硫效率的影响,并采用正交表研究各因素对镁基-海水法脱硫效率影响的优先级,优化试验参数.结果表明:(1)镁基-海水法脱硫效率显著优于海水法.对环境变化体现出较强适应性和较宽容量范围,海水法不适合船舶烟气高效脱硫;(2)镁基-海水法中影响脱硫效率各因素的优先等级为:pH值>液气比>空塔气速,其中pH值为关键因素;(3)镁基-海水法最佳脱硫方案为:当空塔气速为0.5m/s时,液气比为10L/m3、pH值为7.5.更多还原

【Abstract】 A self-made wet flue gas desulfurization(FGD)equipment with MgO-seawater as desulfurizer,was applied for marine flue gas desulfurization on Binghe container ship of COSCO Container Lines Co.,Ltd.A series of reaches were arranged to compare FGD efficiencies between seawater and magnesium base-seawater(M&S)methods,under factors of empty container gas velocity,liquid to gas ratio,and pH value.Orthogonal experiments were designed to detect the priority of different factors and to optimize the preferences.The results showed that:(1)the efficiency of M&S FGD method was significantly superior to seawater,since the former had better adaptability to the environment and a relative broader suitable extent while seawater was not applicable to high desulfurization efficiency for marine flue gas;(2)the significance of different factors for M&S FGD desulfurization efficiency could be ranked as below:pH value>liquid to gas ratio>empty container gas velocity,and the pH value was the key factor of M&S FGD;(3)the optimal operational scheme of M&S FGD treatment were achieved as follows:empty container gas velocity at 0.5m/s,liquid to gas ratio at 10L/m3,and pH value at 7.5.更多还原