Application example 2

Gas expansion in an ammonia production plant.
The ammonia production in a Polish chemical factory is directly supplies with natural gas over a double-stage Spilling gas expander. 

The natural gas is pre-heated with steam before entering the both expansion stages and can therefore enter the production process with high gas temperatures of approx. 35 °C after the machine.
gas expansion
Benefits for the customer

  • Cost saving by reduced external electricity purchase 
  • Increased operating efficiency due to energy utilisation of natural gas 
Summary of system data

Gas pre-heating
Water vapour from the operational steam supply

Spilling unit
4-cylinder gas expander with double-stage expansion 

Inlet pressure and temperature at motor 45 bar
Outlet pressure and temperature at motor 5 bar
max. gas throughput 21 000 Nm3/h
Generator terminal output 1,045 kW
Gas expansion
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