Journal . reaks in the boiling-point curvewere observed at 80°—82°, 98°—100°, and 110°—112° O. The presence of toluene in the fractiondistilling at 108°—112° C. was detected by thenitration test. The proportion of oleflnes wasestimated from the liromino absorption value andthat of paraffins and oleflnes together by thedimethyl sulphate test. In this way the originalliquid was found to be composed of 75-9% ofparaffins, 1-6% of oleflnes, and 22-5% of aromatichydrocarbons. The percentage distilling at 78°—82°, corresponding to crude benzol, was 12%, andbetween 108° and 112° (crude toluol). 10%. T
Journal . reaks in the boiling-point curvewere observed at 80°—82°, 98°—100°, and 110°—112° O. The presence of toluene in the fractiondistilling at 108°—112° C. was detected by thenitration test. The proportion of oleflnes wasestimated from the liromino absorption value andthat of paraffins and oleflnes together by thedimethyl sulphate test. In this way the originalliquid was found to be composed of 75-9% ofparaffins, 1-6% of oleflnes, and 22-5% of aromatichydrocarbons. The percentage distilling at 78°—82°, corresponding to crude benzol, was 12%, andbetween 108° and 112° (crude toluol). 10%. Theresults point to the possibility of recovering toluolon a commercial scale in the manufacture of car-huretted water-gas.—A. S. Gas liquor; T)islillation of without lime. J. S. Unger. Gas Age. Oct. 1, 1915. J. GaaLighting, 1915, 132, 144. Whkn gas liquor is distilled without lime, in theordinary apparatus, it is difficult to obtain a con-centrated liquor containing more than 13% of. UQUca PUM» ammonia without serious trouble due to thecrystallisation of ammonium carbonate. In theapparatus described (see fig.) the liquor nassesfrom the liquor tank through a washer, and thenc*through a seal-pot where it is heated by the wasteliquor from the still. It then passes tlirough atiibular heater, where it is heated by the vapoursfrom the still to about 190° F. (88° C), and thenceinto the still proper. At 190° F. a large proportionof the carbonic acid and hydrogen sulphide is givenoff, together with a little ammonia. These vapoursare scrubbed by the cold liquor in the washer,the ammonia is recovered, and the other gases aredischarged. The mixture of steam and ammonia,coming from the still is through the heater»where part of the steam is condensed and returnedto the still, and the remainder along with theammonia passes through the condenser into theabsorljer. The exhaust steam from the liquorpump is utilised in the still, and additional steamis supplie
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
