Though they look very different,UOP SimulFlowTM,Koch-Glitsch Ultra-FracTM,Jaeger CoFloTM and Shell ConSepTM trays fall into the same category of trays using inertial separation technology. However,flooding mechanisms ...Though they look very different,UOP SimulFlowTM,Koch-Glitsch Ultra-FracTM,Jaeger CoFloTM and Shell ConSepTM trays fall into the same category of trays using inertial separation technology. However,flooding mechanisms and the trends of entrainment and efficiency are different due to their different working principles. This paper provides a detailed analysis of these trays using available information from literature and U.S. Patents. Efforts are also made to interpret the observations reported. In terms of tray efficiency,it is found that SimulFlow,Ultra-Frac and CoFlo trays are typical point efficiency devices due to a completely mixed liquid pool on the tray deck,while ConSep trays can take advantage of liquid concentration gradient on the tray deck,which makes this tray at-tractive among all ultra high capacity trays.展开更多
建立了蒸馏容量法测定铅基合金中的砷的分析方法。用稀硝酸溶样，以硫酸铅沉淀形式分离基体铅。砷在30％的盐酸溶液中是A s （Ⅲ）离子状态于108℃时以三氯化砷形式挥发，收集蒸馏出来的三氯化砷并中和至中性，以20％的碳酸氢钠溶液作...建立了蒸馏容量法测定铅基合金中的砷的分析方法。用稀硝酸溶样，以硫酸铅沉淀形式分离基体铅。砷在30％的盐酸溶液中是A s （Ⅲ）离子状态于108℃时以三氯化砷形式挥发，收集蒸馏出来的三氯化砷并中和至中性，以20％的碳酸氢钠溶液作缓冲液，用碘标准溶液滴定。使用本方法对铅基合金标准样品中的砷的测定，其相对标准偏差为2．50％～3．50％，结果准确可靠，方法切实可行。展开更多
米糠油由于解脂酶的作用导致其酸价高、色泽深且精炼困难,由于化学脱酸存在精炼率低、助剂残留、炼耗高及副反应多等诸多弊端,使物理法蒸馏脱酸针对高酸值米糠油精炼优势凸显。研究了蒸馏脱酸的精炼效果,考察了脱酸后酸值、色泽的变化...米糠油由于解脂酶的作用导致其酸价高、色泽深且精炼困难,由于化学脱酸存在精炼率低、助剂残留、炼耗高及副反应多等诸多弊端,使物理法蒸馏脱酸针对高酸值米糠油精炼优势凸显。研究了蒸馏脱酸的精炼效果,考察了脱酸后酸值、色泽的变化。通过单因素与正交试验,优化了米糠油蒸馏脱酸的工艺条件。正交试验以真空度、蒸馏温度和蒸馏时间为因素,获得的最佳条件是真空度90 k Pa,时间1.7 h,蒸馏温度215℃。展开更多
The numerical method(penalty function algorithms)of minimum total vapor capacity of binary regular batch distillation under optimized operating strategy and ideal operation conditions was introduced.The analytical met...The numerical method(penalty function algorithms)of minimum total vapor capacity of binary regular batch distillation under optimized operating strategy and ideal operation conditions was introduced.The analytical method of minimum total vapor capacity of binary regular batch distillation under optimized operating strategy and ideal operation conditions was deduced by using the calculated results of examples.展开更多
文摘Though they look very different,UOP SimulFlowTM,Koch-Glitsch Ultra-FracTM,Jaeger CoFloTM and Shell ConSepTM trays fall into the same category of trays using inertial separation technology. However,flooding mechanisms and the trends of entrainment and efficiency are different due to their different working principles. This paper provides a detailed analysis of these trays using available information from literature and U.S. Patents. Efforts are also made to interpret the observations reported. In terms of tray efficiency,it is found that SimulFlow,Ultra-Frac and CoFlo trays are typical point efficiency devices due to a completely mixed liquid pool on the tray deck,while ConSep trays can take advantage of liquid concentration gradient on the tray deck,which makes this tray at-tractive among all ultra high capacity trays.
文摘建立了蒸馏容量法测定铅基合金中的砷的分析方法。用稀硝酸溶样，以硫酸铅沉淀形式分离基体铅。砷在30％的盐酸溶液中是A s （Ⅲ）离子状态于108℃时以三氯化砷形式挥发，收集蒸馏出来的三氯化砷并中和至中性，以20％的碳酸氢钠溶液作缓冲液，用碘标准溶液滴定。使用本方法对铅基合金标准样品中的砷的测定，其相对标准偏差为2．50％～3．50％，结果准确可靠，方法切实可行。
文摘米糠油由于解脂酶的作用导致其酸价高、色泽深且精炼困难,由于化学脱酸存在精炼率低、助剂残留、炼耗高及副反应多等诸多弊端,使物理法蒸馏脱酸针对高酸值米糠油精炼优势凸显。研究了蒸馏脱酸的精炼效果,考察了脱酸后酸值、色泽的变化。通过单因素与正交试验,优化了米糠油蒸馏脱酸的工艺条件。正交试验以真空度、蒸馏温度和蒸馏时间为因素,获得的最佳条件是真空度90 k Pa,时间1.7 h,蒸馏温度215℃。
文摘The numerical method(penalty function algorithms)of minimum total vapor capacity of binary regular batch distillation under optimized operating strategy and ideal operation conditions was introduced.The analytical method of minimum total vapor capacity of binary regular batch distillation under optimized operating strategy and ideal operation conditions was deduced by using the calculated results of examples.
