Packing elements used in material exchange column

• Main Authors: KAISER, WULF., 67098 BAD DUERKHEIM, DE, HARTMANN, HORST, 67459 BOEHL-IGGELHEIM, DE, BURST, WOLFRAM, 68199 MANNHEIM, DE
• Format: Patent
• Language: English; German
• Published: 14.08.1997
• Edition: 6
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

Packing elements which are subjected to low pressure losses and which are used in fractional distillation columns, have the same diameter as that of the column inner diameter, and a height of 40 to 300mm. The elements consist of dimensionally stable layers (2,3) with an ordered structure. They are made of cloth or cloth-like material with a specific surface of 2000m /m . The novelty is that: (a) the contacting, deformed layers of cloth or cloth-like material pref. metal cloth, are arranged to form a number of narrow flow ducts, pref. triangular, rectangular, square, or equilateral hexagonal flow ducts; (b) the angle of inclination (1) of the teeth in the individual cloth layers (2,3) of the packing towards the column axis is 0 to 25 degrees, pref. 3 to 14 degrees; (c) wires or thin rods (4) are mounted as required between th cloth layers (2,3), or the cloth layers (2,3) are rigidly connected at some points of contact, providing mechanical stability. Also claimed is a process for obtaining pure substances from mixtures by rectification using the packing elements described.