Gas purification equipment for the adsorption of radioactive impurities from a gas stream

A supplement to previous claims is concerned here, i.e. a testing equipment which enables the periodic laboratory control of an adsorber made up of several filter cells, without essentially interrupting operation. In one part section of a mostly lying gas channel, the filter cells are arranged at equal distances behind one another in such a manner as if they should be flowed through one after the other crossways to the channel axis. Narrow right-angled wall surfaces join alternately upstream and downstream, the right-angled narrow sides of each of two neighbouring filters. Thus a meander form is produced with upstream and opposing out-of-line downstream open flow cross-sections. Part flows of the gas to be purified always only flow through one filter cell in Z form which contains an adsorbent for radioactive impurities. This adsorbent, e.g. activated carbon, is trapped between two sieve-like, fine-holed plates - as inlet and outlet surfaces of the filter cell. The patent contains constructive details for the testing device as well as for the filling device and the emptying of the adsorbent of a filter cell. (HP)