Laboratoriums-Bodenkolonne und Verfahren zu ihrer Herstellung

摘要

1,220,167. Distillation column. CESKOSLOVENSKA AKADEMIE VED. 5 Sept., 1968 [5 Sept., 1967], No. 42203/68. Heading B1R. A laboratory distillation column comprises a glass tube 1 having a series of vertically spaced narrowed portions 5 in each of which is fitted loosely a contact plate 2 with an aperture 6 from which depends a liquid downcomer 7, the plates 2 seating peripherally against inwardly projecting hollow fins 9 as shown to allow rising vapour to pass upwardly around the edges of the plates. Projections such as 8 keep the plates in position and in a modification the lower ends of the downcomers are sealed in a pool of liquid contained in a centrally disposed pan.