384.     BRÜCKNER, H., AND CHOULAT, G.  [Utility of Residual Gas From the Fischer-Tropsch-Ruhrchemie Process as City Gas.]  Gas- u. Wasserfach, vol. 83, 1940, pp. 497-499; Chem. Abs., vol. 35, 1941, p. 300.

      Analyses of the residual gas from the gasoline plant showed the following variations and average values over a period of 18 days:  CO₂ 13.5-19.8% ave. 17.0%; unsaturated 0.3-1.1%, ave. 0.7%; O₂, 0.0-0.2%, ave. 0.1%; CO, 2.9-11.9%, ave. 9.0%; H₂, 11.3-23.6%, ave. 20.0%; CH₄ 27.6-40.9%, ave. 33.0%; N₂, 16.5-35.1%, ave. 20.2%.  The average gross heating value was 4,170 kg.-cal. per m.³ (0°, 760 mm. Hg, and dry) and average density 0.755.  the maximum rate of flame propagation was 29 cm. per sec. as compared with 70-95 cm. per sec. for manufactured gas.  The highest specific-flame intensity (combustion density) was approximately 740X10^-4 kg.-cal. per cm.² per sec. as compared with about 1,200 for manufactured gas.  These last two characteristics make the gas unsuitable for use alone as city gas, but a maximum of 25-30% can be mixed with coke-oven gas.