|Steam jet cooling systems only require water or aqueous solutions instead of chemical cooling agents. Instead of high-value electricity, low-pressure steam (waste steam) can be used for the operation.|
A steam-jet cooling plant placed into operation within an ethylene oxide/ethylene glycol (EO/EG) process unit has operated continuously for seven years without requiring any shutdown of the plant for maintenance. Installed at a big chemical company in China, the steam-jet cooling plant from GEA Wiegand GmbH uses water steam under a slight overpressure (waste steam) as drive energy for the plant.
Apart from the drive energy, the steam-jet cooling system requires relatively warm cooling water (98.6°F [37°C]). With the cooling system, a refrigerating capacity of 16,450 kW can be generated. In this case, ~55.515ft³/hr (1,572 m³/hr) of water are cooled from 84 to 60°F (29 to 20°C). This chilled water is used to optimize the EO/EG production, particularly during summer periods when the cooling water is relatively warm. If no cooled water was available, production would have to be stopped, or the systems would have to be shutdown.
According to GEA Wiegand GmbH, steam-jet cooling systems can be an environmentally friendly alternative to absorption cooling systems because they only require water or aqueous solutions instead of chemical cooling agents. Instead of high value electricity, low pressure steam (waste steam) can be used for the operation of such systems. For this reason, the operating expenses are low compared to other technological systems.
Steam-jet cooling systems are used to cool water or aqueous solutions down to the formation of ice. They can be are applied for the generation of cold water for product cooling in the food industry, chemical industry, synthetic material and pulp industries.