2840.     ROBSON, G. W.  Benzol Recovery by Active Carbon.  Gas Jour., vol. 246, 1945, pp. 687, 689.

        Active C plant at the Morpeth Gas Works is described.  Its capacity is 400,000 cu. ft. of gas per day, using about 3 cwt. of C in the absorber.  A complete cycle of operation has 3 periods:  adsorbing, steaming, drying in the time ratio of 60:33:30.  The efficiency of extraction is about 90%; this could be raised with careful chemical supervision.  The over-all running costs are about 6 d. per gal. of benzol recovered.

        ROCK, S. M.  See abs. 1195.

        ROCKENBACK, L. P.  See abs. 3306.