|
GB439974A
|
|
Improved process and apparatus for purifying coal gas
|
|
GB360127A
|
|
Flue gas washing and purification with means for minimizing effluent
|
|
GB365090A
|
|
Manufacture of sulphuric acid from flue gases
|
|
DE555226C
|
|
Device for treating gases with liquids
|
|
GB311249A
|
|
Improvements in or relating to apparatus for treating gases with liquids
|
|
GB235613A
|
|
Improvements in or relating to the manufacture of sulphate of ammonia
|
|
GB224305A
|
|
Improvements in or relating to the distillation of tar
|
|
GB122232A
|
|
Improvements in or relating to Furnaces.
|
|
DE503220C
|
|
Device for treating gases with liquids
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