Application of compounded separated heat-pipe in the waste heat recovery of the produced crude oil
2020
Haixia HE | Wen WANG | Jiahui WANG | Jianfei WU | Zan WU
The produced liquid of heavy oil extracted by the Steam Assisted Gravity Drainage (SAGD) technology has a high temperature and great energy-saving potential in heat recovery. Therefore, it is worth discussing on the recovery of the waste heat in the produced crude oil with heat pipe exchangers in the oil field for industrial or domestic use. Considering site space requirements and the modularization of engineering equipment, U-shaped shell-and-tube heat exchangers and spiral plate heat exchangers were used as the evaporation and condensation sections of the separated thermosyphon heat pipe and a compound separated heat pipe model was set up to analyze their heat exchange performance, cyclic pressure drop, filling rate and heat exchange capability. The model was verified by the separated heat pipe system in the oil-water secondary heat exchange zone of Xinjiang Oilfield. The result shows that the compound separated heat pipe calculation model is feasible and compound heat pipes have the advantages of U-shaped shell-and-tube exchangers and spiral plate heat exchangers and strong heat exchange performance. The system has a heat exchange capability meeting actual requirements and good environmental suitability.
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