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                                                当前位置:首页  >  技术文章  >  减压蒸馏反应釜正确工作时需要留意的事项有哪些?

                                                减压蒸馏反应釜正确工作时需要留意的事项有哪些?

                                                发表时间:2022-10-08      点击次数:6
                                                  减压蒸馏反应釜是一种快速将液体样品浓缩的装置,因搅拌系统采用磁力搅拌静密封,能保持高真空度。样品在反应釜中加热、减压,并通过搅拌系统不断地旋转增大蒸发表面积,加快蒸发速度。主要用于医药、化工和生物制药等行业的浓缩、结晶、干燥、分离及溶媒回收。
                                                  工作原理:在真空条件下,恒温加热,搅拌系统的充分搅拌,使物料快速蒸发。溶媒蒸气经冷凝器冷却,回收于收集瓶中,大大提高蒸发效率,特别适用对高温容易分解变性的生物制品的浓缩提纯。
                                                  减压蒸馏反应釜正确工作需要留意的事项有哪些?
                                                  1、当被蒸馏物中含有低沸点物质时,应行常压蒸馏,然后用真空泵减压蒸去低沸点物质。后再用真空泵减压蒸馏。
                                                  2、根据化合物的沸点不同,选用合适的加热方法。不能用明火直接加热,通常选用水浴或油浴,总的要求是加热均匀,尽量避免局部过热。控制浴温,保持比液体的沸点高。
                                                  3、要特别注意真空的转动方向。如果真空泵接线位置搞错,则会使真空泵反向转动,导致水银冲出压力计,造成污染。
                                                  4、蒸馏沸点较高的物质时,可用石棉绳或石棉布包裹克氏蒸馏头的两颈,以减少散热。
                                                  5、蒸馏完毕,或蒸馏过程中需要中断时,应先灭去火源,撤去热浴,待稍冷后缓缓解除真空,使系统内外压力平衡后,方可关闭油泵。否则,由于系统中的压力较低,油泵中的油会吸入吸收塔。
                                                 

                                                减压蒸馏反应釜

                                                 

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