在化学操作中，怎么使用“旋蒸”的方法来蒸发湿漉漉的固体？
其实我是想问：“旋蒸”怎么操作？
推荐回答（2个）
旋转蒸发操作要使用旋转蒸发仪。
旋转蒸发仪主要用于在减压条件下连续蒸馏大量易挥发性溶剂。尤其对萃取液的浓缩和色谱分离时的接收液的蒸馏，可以分离和纯化反应产物。旋转蒸发仪的基本原理就是减压蒸馏，也就是在减压情况下，当溶剂蒸馏时，蒸馏烧瓶在连续转动。
结构:蒸馏烧瓶可是一个带有标准磨口接口的梨形或圆底烧瓶，通过一高度回流蛇形冷凝管与减压泵相连，回流冷凝管另一开口与带有磨口的接收烧瓶相连，用于接收被蒸发的有机溶剂。在冷凝管与减压泵之间有一三通活塞，当体系与大气相通时，可以将蒸馏烧瓶，接液烧瓶取下，转移溶剂，当体系与减压泵相通时，则体系应处于减压状态。使用时，应先减压，再开动电动机转动蒸馏烧瓶，结束时，应先停机，再通大气，以防蒸馏烧瓶在转动中脱落。作为蒸馏的热源，常配有相应的恒温水槽。
使用方法：
1.高低调节:手动升降,转动机柱上面手轮,顺转为上升,逆转为下降. 电动升降,手触上升键主机上升,手触下降键主机下降.
2.冷凝器上有两个外接头是接冷却水用的,一头接进水,另一头接出水,一般接自来水,冷凝水温度越低效果越好.上端口装抽真空接头,接真空泵皮管抽真空用的.
3.开机前先将调速旋钮左旋到最小,按下电源开关指示灯亮,然后慢慢往右旋至所需要的转速,一般大蒸发瓶用中,低速,粘度大的溶液用较低转速.烧瓶是标准接口24号,随机附500ml,1000ml两种烧瓶,溶液量一般不超过50%为适宜.
注意事项:
1.玻璃零件接装应轻拿轻放,装前应洗干净,擦干或烘干.
2.各磨口,密封面密封圈及接头安装前都需要涂一层真空脂.
3.加热槽通电前必须加水,不允许无水干烧.
4.RE-52B必须使(19)拧入保险孔内保险,以免损坏烧瓶.
5.如真空抽不上来需检查：
(1)各接头,接口是否密封
(2)密封圈,密封面是否有效
(3)主轴与密封圈之间真空脂是否涂好
(4)真空泵及其皮管是否漏气
(5)玻璃件是否有裂缝,碎裂,损坏的现象
是旋转蒸发仪吧！
你是想把溶剂给蒸发掉，留下固体。
可以设置一下温度，即为要蒸掉溶剂的沸点。
具体的操作很简单的，
1、先把胶管与冷凝水龙头连接，把真空胶管与真空泵相联。
2、关闭冷凝器的阀门，使达一定真空后松开。
3、打开调速开关，调节转速旋钮，蒸发瓶开始转动。打开调温开关，设置温度，即为要蒸掉溶剂的沸点，加热槽开始自动温控加热，仪器进入试运行。
4、蒸发完毕，首先关闭调速开关及调温开关，然后打开冷凝器上方的阀门，使之与大气相通，取下蒸发瓶，蒸发过程结束。
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