應(yīng)用化學(xué)專業(yè)文獻(xiàn)翻譯中英文對照(已修改)
2024-12-22 04:08 本頁面
【正文】 本科畢業(yè)設(shè)計 —— 文 獻(xiàn)翻譯 1 Operation of plate rectification tower Abstract:The influencing factors,abnoimal phenomenon and rectification process were analyzed to direct actual operation Key words: rectification tower,recification,reboiler,operation Distillation column is a multistage partial vaporization and partial condensation according to the different ponents in the mixture volatility in each floor tower board to achieve the separation of a mixture of various ponents of the tower gasliquid contact device, also known as distillation. A plate column and packed column types. According to mode of operation are divided into continuous distillation and batch distillation. Steam from the bottom of the column entry, and the decline in liquid countercurrent contact with the two in contact, the drop in the volatile liquid (low boiling point) ponents is continuously transferred to the steam. The difficulty of steam volatile (high boiling) ponent continued to decline in the transfer of liquid, steam the closer the top of the tower, the higher the concentration of its volatile ponents, while the decline in the closer tower bottom liquid, its hard to be more volatile ponents rich set, to achieve ponent separation. Steam rising from the top of the tower into the condenser, the liquid part of the condensate as reflux liquid to return into the distillation tower, the rest is removed as distillate. Tower bottom outflow of liquid, some of which into the reboiler, thermal evaporation, the steam back to tower, and the other part of the liquid as residua release. Compared with other chemical unit operations,distillation unit,although relatively simple,single production run that often appear in a variety of problems affecting the operation of the distillation unit,leading to tower top orbottom of product failure,severe constraints of production equipmentthe operation resulting in product loss. changes in process conditions of distillation column Reboiler temperature Under the same operating pressure,raising the temperature of the reboiler,the volatile ponents in the tower liquid to reduce,at the same time,the rising vapor velocity increases,and help to improve the efficiency of mass products from the top of the tower,the tower reactor discharge of difficult volatiles volatile ponents to reduce and reduce the tower reactor effluents for the product,it can improve product quality tower discharge of volatile ponents 本科畢業(yè)設(shè)計 —— 文 獻(xiàn)翻譯 2 entrained difficult nolatile ponents increased,thereby increasing the balanced operation,the reactor temperature is suddenly increased,and it too late to adjust the pressure and temperature will inevitably lead to the reboiler fluid is steamair, the pressure this time,the tower gas,liquid position changes,the restructuring were likely to be steamed to the top of the tower,so that the failure of top product. Operating pressure In the case of
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