| 摘要 |
<p>The production process for a filter unit (10) in the form of an adsorptive moulding (8') provides that granules of an adsorbent, in particular activated charcoal, and a granular thermoplastic organic binder are mixed dry. The dry mixture is then placed in a mould and compressed in this. With substantial prevention of supply of air, the mixture in the mould is heated to a temperature essentially above the plastic region of the binder. The temperature is maintained until charring and at least partial carbonisation of the binder occurs. The moulding is then cooled and removed from the mould. A filter unit thus produced having an inlet side (3) and outlet side (5) for the filtrate is characterised in that in the adsorbent (8') the granules of the adsorbent are fixed in the residual structure of the charred and partly carbonised in an open-pored manner, organic binder having micropores. The adsorption body (8') can be held between an inlet-side (4) and an outlet-side (6) porous support wall, these walls joining flush to the body (8'). The support walls can be fabricated as sintered bodies and can act as a mechanical fine filter. <IMAGE></p> |
