The process of cooling superheated steam by direct injection of water is called desuperheating. This is typically done to meet the conditions required for downstream process(es) when the available steam happens to be at higher temperature and there is also a source for injecting spraywater into it. It is required in many industrial processes where the steam temperature, and/ or quality, is critical for reliable and efficient operation of the system. Such systems are common in power stations, refineries, pulp & paper industry and desalination plants, where a boiler producing superheated steam already exists.

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