Keywords: Distillation column trays.JPG en Distillation column trays bubble cap tray left and sieve tray right 1906 http //archive org/details/cu31924030694008 The elements of chemical engineering 1906 Jacob Grossmann Jabob Grossmann died in 1920 See http //books google it/books id TcFFP-dQ9QwC pg PR22 lpg PR22 dq 22Jacob++Grossmann 22 source bl ots Bfrc2Y5JKy sig bsgFBlcqEJttHSPqOgnEncMMZhI hl it sa X ei OtBSUL6VN4314QT6hIH4CQ ved 0CDsQ6AEwAzgK v onepage q 22Jacob 20 20Grossmann 22 f false PD-old-auto-1923 1920 Uploaded with UploadWizard Continuous distillation columns Plate columns |