Chemical process engineering

Water Air
Soil             Waste

Unlike in mechanical or thermal process engineering, the focus of chemical process engineering is not to change substance properties or the composition of a substance. The central subject of chemical process engineering is the creation of a new substance type through chemical reaction.

Introduction to chapter “Chemical process engineering”

Thermal activation
The energy required to activate the chemical reaction can be applied through heat. The desired temperature range is achieved by heating or cooling. In this temperature range, the reaction conditions are optimal and undesired side reactions are avoided.
WL 110.20
      
CE 310
    
CE 310.01
Water Chiller                              Supply unit for chemical reactors Continuous stirred tank reactor  
Continuous stirred tank reactor                                                                                  Basic unit for investigation and comparison of different reactors during a saponification reaction Tank for continuous or batch operation with agitator, heater coil and overflow                  
 
CE 310.02
 
CE 310.03
 
CE 310.04
Tubular reactor                         Stirred tanks in series               Discontinuous stirred tank reactor
Tube coil as a reaction tube in a water bath for continuous reaction operation                   Series connection of three stirred tank reactors and a process delay                                                 Dewar vessel with stirrer and heat exchanger for isothermal saponification reaction
CE 310.05
 
CE 310.06
 
CE 100
Plug-flow reactor Laminar flow reactor Tubular reactor
Continuously operated tubular reactor; fixed bed with glass spheres                                           Continuously operated tubular reactor                                                                                Demonstration of the influence of temperature and material contact time on the saponification reaction
Catalytic and photochemical activation

Many reactions are too slow for technical applications at ambient temperature because the required activation energy is very high. Catalysts lower the required activation energy and accelerate the chemical reaction. The reaction is activated by atoms or molecules absorbing optical radiation. The mostly organic substances thus achieve a higher energy level and are activated.

CE 380
 
CE 584
    
CE 380.01
Fixed bed catalysis           Advanced oxidation Flow injection analysis     
Investigation of catalytic reactions                                                       Oxidation of organic substances with hydrogen peroxide and UV light      Professional analysis unit for CE 380: detection of glucose    
 
CE 650
Biodiesel Plant       
Chemical transesterification of vegetable oils               
Diffusion
Diffusion is the microscopic mass transport of particles such as atoms, molecules and ions due to differences in concentrations.
CE 110
     
 
Diffusion in liquids and gases
Use of Fick’s Law