| 摘要 |
A process for regenerating an adsorbent made of active carbon or aluminum oxide is characterized by resizing an undersized fraction of adsorbent before a regeneration process to maintain a given nominal particle size of adsorbent in an adsorber. In the regeneration process, adsorbent discharged from the adsorber is drained of waste water by feeding the adsorbent onto a screen and obtaining therefrom a first adsorbent fraction consisting of particles with a given nominal particle size and an undersized second adsorbent fraction consisting of particles greater than 10% of the given nominal particle size. The first adsorbent fraction is fed into a fluidized-bed oven for regeneration. The undersized second adsorbent fraction is fed into a processing plant for processing to define the desired given nominal particle size. The processed adsorbent particles and the regenerated adsorbent particles are returned to the adsorber. A further embodiment of the invention provides that the regenerated and processed adsorbent particles are fed onto a pair of superimposed screens for separation so that only particles having a size greater than 50% of the given nominal particle size are returned to the adsorber while the remaining adsorbent particles are subdivided into parts consisting of particles having a size greater than 15%, but less than 50%, of the given nominal particle size which are fed directly to the processing plant and a second part consisting of dust-like particles, less than 15% of the given nominal particle size, admixed with the conveying water. The aqueous mixture of dust-like adsorbent particles is fed to a separator for removing water therefrom which is returned to the adsorber. The dust-like particles are fed to the processing plant for providing the desired particle size.
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