625.    COOPERMAN, J., DAVIS, J. D., SEYMOUR, W., AND RUCKES, W. L.  Lurgi Process for Complete Gasification of Coals With Steam and Oxygen Under Pressure.  Bureau of Mines Bull. 498, 1951, 38 pp.

     An investigation was made, in an apparatus closely simulating that used in industrial-scale operation, to determine the proper fuels and operating conditions to be used in carrying out the Lurgi process of gasification.  It was found that caking coals cannot be gasified, but noncaking fuels, such as anthracite and low- and high-temperature cokes can be completely gasified in a Lurgi apparatus with the production of CO₂-free fuel gas of about 410 B.t.u./cu. ft. heating value.  Low-temperature coke or char can be made from bituminous coals in various ways, particularly in batches in a rotating retort.  By passing the Lurgi gas, properly purified from S, over a Ni methanization catalyst, a synthesis gas of about 950 B.t.u./cu. ft. was obtained after scrubbing out the CO₂.  The catalyst was the British Gas Research Board type made by precipitating 100 parts by weight of Ni (NO₃)₂, 20 Mn (NO₃)₂, 13.6 Al(No₃)₃, 25 china clay with 97 K₂CO₃ and reducing for 2 hr with H₂ at 400° and 300 p.s.i.  Diagram and flow sheet of the apparatus are shown.

     COQUELLE, O.  See abs. 189.