Daimler Chrysler Ag

Harald Ertl

Johann Goebel

Sabine Kunz

Ulrich Breit

Christoph Wagner

Johann Gobel

An ion mobility spectrometer has two opposing wall elements connected by at least one spacer with parallel, mutually assigned, planar, gas-guiding wall surfaces with opposing conductor structures to generate a drift field. The ratio of distance of the gas-guiding wall surfaces to the field-generating width of the conductor structure perpendicular to the drift direction is less than 1:2 and is advantageously 1:3 to 1:10.

Ion mobility spectrometer

A system for cleaning the air, such as air in the interior of motor vehicles, airplanes, buildings or shelters, having organic substances such as alcohols, alkanes and aliphatic and aromatic hydrocarbons. The air cleaning system includes a cylindrical adsorber. The cylindrical adsorber has a plurality of circular segments for passing air to be cleaned and for passing desorption air through the adsorber. The adsorber contains adsorption agents, such as a hydrophobic zeolite, that can be regenerated with microwaves. The air cleaning system also includes a microwave unit disposed on adsorber and an oxidation catalyst.

Method and installation for eliminating gaseous organic substances in the air

A filter for cleaning air by removing noxious and/or odorous matter from the air flow by desorption is constructed so that filter sections (,) can be sequentially heated for a desorption of the noxious and odorous matter. An air discharge (,) for desorption air is provided on the air exit side (,) of the filter (,) for the discharge of the desorbed noxious and odorous matter, preferably into the combustion air of an engine. The air discharge (,) for the desorption air covers at least one filter section,at a time when that section is being heated. A relative motion between the filter sections (,) and the air discharge (,) assures that other filter sections keep filtering while at least one filter section at a time is regenerated.

Apparatus for cleaning an airstream

A process for regenerating an adsorber which adsorbs organic substances from the air in which the adsorber is heated by microwave energy to evaporate adsorbed organic substances on the adsorber. The adsorber is provided with enhanced microwave absorption capacity to enable the adsorber to evaporate the adsorbed organic substances. The adsorber can be produced to have itself high microwave energy absorbing capacity or a solid material can be combined with the adsorber to provide the high microwave absorbing capacity. The solid material can be combined with an adsorbing enhancing substance and can be a carrier therefor. In a particular embodiment, the adsorber can be a hydrophobic zeolite and the microwave absorbing material can be a hydrophilic zeolite.

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Geretsried, Germany

Harald Ertl