Process for gas adsorption using aminomethylated bead polymers
OwnerRudolf Wagner, Ulrich Schnegg +2inventors
InventorsRudolf Wagner, Ulrich Schnegg, Wolfgang Wambach, Reinhold Klipper
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Abstract
The present invention relates to a process for gas adsorption, in particular of acidic gases, using monodisperse aminomethylated bead polymers.
Claims11
A process for the adsorption of gases comprising adsorbing the gases in an open, closed, or partially closed system or space with a monodisperse aminomethylated bead polymer based on at least one monovinylaromatic compound and at least one polyvinylaromatic compound and having a porosity of from 40 to 70%, wherein the bead polymers are prepared by a process comprising
- (a) reacting monomer droplets made from at least one monovinyl-aromatic compound and at least one polyvinylaromatic compound, and, if desired, a porogen and/or, if desired, an initiator or an initiator combination to give a monodisperse, crosslinked bead polymer,
- (b) amidomethylating the monodisperse, crosslinked bead polymer using phthalimide derivatives, and
- (c) converting the amidomethylated bead polymer to an amino-methylated bead polymer.
A process for regenerating monodisperse aminomethylated bead polymers that have been saturation with acidic gases or with organic gases or vapors comprising
- (1) applying steam under atmospheric conditions, or
- (2) applying subatmospheric pressure, with or without additional application of heat and/or of hot gases, or
- (3) applying heated or unheated CO2-free air.
Dependencies are inferred from the claim text.