應(yīng)用化學(xué)專業(yè)文獻(xiàn)翻譯中英文對(duì)照(完整版)
【正文】 he amount of steam,and the top of the tower is difficult volatile group were lower. Saturated steam feed,the feed material temperature is higher than the temperature of feed board,all the material of the feed into the rectifying section and stripping section of the load reduction,and increased load of the rectifying section,make the top product quality reduce. Feeding quantity and position changes Changes in the feedstock of a direct impact on the change of the amount of steam,the latter increase will produce entrained,even feedstock is too low,the operation is not good to maintain the balance of the tower,the steam velocity decreases,the plate is prone to leakage,the rectification efficiency is lowload operation,may be appropriate to increase the reflux ratio,the tower operating in a load lower limit above normal and stable operation in order to maintain the ponent of the changes directly affect the product restructuring concentration increase in the rectifying section load separation is not good,the results of restructuring were brought to the top of tower,causing the top of the tower of inferior from the reboiler,the top of the tower losses the concentration of the volatile group in the feeding group were 本科畢業(yè)設(shè)計(jì) —— 文 獻(xiàn)翻譯 3 increased,and the stripping section of the load increases,may be poor due to the separation caused by the tower reactor products of inferior quality,which entrained volatile ponents restructuring concentration increased,the feeding mouth move down and vice versa,then move same time,operating temperature,back flow and operating pressure must be adjusted accordingly in order to ensure the stability of the distillation operation. Distillation,increasing the reflux ratio,can improve the quality of the product,but the reflux ratio is too large,the inner loop of the tower increased,increasing energy of the reflux ratio,the tower gasliquid contact is not good,the balance to damaged and therefore the mass transfer efficiency same time,the operating pressure drop,difficult volatile ponents easily brought to the top of the tower,resulting in a substandard product. 2 Anomalies in the distillation column during operation Plate capacity Rectifying section tray downer overflow liquid transportation,however,that the tower upper part of the beginning of flooding,a phenomenon known as downer obstruction or liquid causes is to block the liquid leaving the tower board level rise in the downer plate between mist entrained excessive leaving the tray efficiency to reduce entrainment of this phenomenon is known as the excessive fog or steam flooding,the reason is the relativein the gas while the tower board bubbling area is too small. Plate fouling Sediment cumulative to the board of board of the tower is an important issue,trays of dirt will tower premature flooding will reduce the plate scaling phenomenon:(1)The reflux ratio is not high on l
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