609.    ---------------.  [COLLIERY ENGINEERING.]  Wintershall-Schmalfeldt Water-Gas Process.  Vol. 23, March 1946, pp. 69-70, 72.

     Description with diagram of the water-gas plant producing synthesis gas for the synthetic-oil works at Lützkendorf.  Raw brown coal is used containing 50-54% moisture.  The plant comprises 4 gasifier units, each with a pair of generators and 5 producers.  The output of synthesis gas under the best operating conditions is 1.07 million cu. ft. per hr. for each gasifier unit.  Operation may be with or without O₂; the usual synthesis-gas composition when using O₂ is CO, 25%; H₂, 50%; CO₂, 18%; CH₄, 3.5%; N₂, 3.5%:  Without O₂, the composition is 28%, 56%, 10%, 3%, and 3%, the composition is 28%, 56%, 10%, 3%, and 3%, respectively.  Gives some detailed operating results.