Wire-gauze boxes

One of possible ways to immobilize the catalyst pellets is to use wire gauze mesh, from which objects of different shape can be manufactured. These objects, together with the catalyst itself form certain structures that should meet the demands of optimum hydrodynamic behavior under vapor-liquid countercurrent flow conditions. Examples of such structures are different random packings made of cylindrical baskets [26], wire-gauze boxes [27], wire-mesh bales [28], etc. 

Buffer vessels can be fitted into wooden boxes lined with glass wool or completely encased in a wire gauze cage. If the vacuum pumps have a belt transmission, the latter must be provided with an effective guard. The safety measures that are neses-sary in a high-pressure laboratory and in work with toxic substances are considered in detail by Craig and Dew [20]. 

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