Abstract

A large amount of waste heat is generated in the oil extraction process when using steam assisted gravity drainage (SAGD) technology. Thermal distillation technology is recommended to deal with the Liaohe Oilfield sewage. It not only can utilize the low-grade energy source, but also can recover the water to settle the water shortage problem. The principles and processes of multi-stage flash distillation (MSF), multi-effect distillation (MED) and vapor compression (VC) are introduced, and the tech-economic analysis is also made. It is found that it has significant advantage in heat and water recovery using the MED technology to deal with the Liaohe Oilfield sewage.

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