Dry distillation

Dry distillation is the heating of solid materials to produce gaseous products (which may condense into liquids or solids). The method may not involve pyrolysis/thermolysis. The products are condensed and collected. This method usually requires higher temperatures than classical distillation. The method has been used to obtain liquid fuels from coal and wood. It can also be used to break down mineral salts such as sulfates through thermolysis, in this case producing sulfur dioxide/sulfur trioxide gas which can be dissolved in water to obtain sulfuric acid. By this method sulfuric acid was first identified and artificially produced.

See also

• Destructive distillation
• Pyrolysis
• Thermolysis

v t e Distillation Principles Raoult's law Dalton's law Reflux Fenske equation McCabe-Thiele method Theoretical plate Partial pressure Vapor-liquid equilibrium Industrial processes Batch distillation Continuous distillation Fractionating column Spinning cone Laboratory methods Alembic Kugelrohr Rotary evaporator Spinning band distillation Still Techniques Azeotropic Catalytic Destructive Dry Extractive Fractional Reactive Salt-effect Steam-based Vacuum-based