Technical Methods

Separation of smoke and mist

Redox reactions between metals and metal oxides (thermiteprocess)

Functional models of hand-held fire extinguishers

Sulphur trioxide - the sulphuric acid contact process

Salts of sulphuric acid - sulphates

Obtaining nitrogen oxides by burning air

Ammonia preparation from the elements (Haber-Bosch process)

Combustion of ammonia to produce nitrogen dioxide

Preparation of iron from oxidic ores (blast furnace process)

Explosion limits of a petrol-air mixture

Cracking of hydrocarbons

Electrostatic flue gas cleaning

Principle

This experiment modelling the principal functions of an electrostatic filter can also be set up conveniently as a complete experiment on the comprehensive experiments panel.

Model experiment on the desulphurisation of flue gas

Principle

German coal contains an average of one tonne of sulphur per 100 tonnes of coal. During combustion, this generates in about two tonnes of sulphur dioxide. Thus, a large 700-megawatt power plant which burns about 200 tonnes of coal per hour produces about 100 ...