China National Petroleum Corporation operates efficient Seawater Desalination System China National Petroleum Corporation Beijing, China Hydrocarbon Processing Industry www.fielddevices.foxboro.comfielddevices.foxboro.com January 2016 | 2 Goals • Maintain the right pressure in each evaporator , control the flow of seawater and vapor through the system, know exactly when the purity level has been reached, and minimize the corrosive e

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