油田含聚污水在换热表面的结垢特性研究

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中图分类号：TE345 文献标志码：A 文章编号：1002-4026（2025）04-0106-12

Abstract：Foulingisacommonproblem intheeficientconversionandutizationof energyasitsignificantlyreduces heat transfereffciencyand jeopardizes theoperationalsafetyof equipment.Inrecent years，withtheapplicationof polymeroil drive technologyinrecent years，thefoulingproblemcausedby HPAMintherecovered fluidhasgradualyattacted atention.Scaling processesaremorecomplex andfouling is more stubborn inHPAM-containing environments than in HPAMfreeenvironments.Herein，toaddress the foulingof polymer-bearing wastewateronthesurfaceof heat-exchanger equipment，we experimentallyinvestigated the impacts offactors suchas heat-exchangersurface temperature，HPAM mass concentration，hydrolysis degree，fluidsalinity，andsurfaceroughness onthefoulingrateandidentiedthefoulingpatterns of polymer-bearing wastewater on such surfaces.It was found that polymerconcentrationisthemostimportant factor affctingthefoulingrateofpolymer-bearing wastewater.Thefoulingrate decreasesand then increases with increasing HPAM mass concentration，and HPAMexertsanantagonistic efect onthe fouling rate.The foulingrateincreases with increasing heat-exchanger surface temperature，andboilingaccelerates thesurface foulingrate.Inadition，thereisacriticaldegreeof HPAM hydrolysisat which thefouling rateisthe highest，while thesurfaceroughness has no significant efect onscalingrate. Key words ： polyacrylamide； polymer-bearing wastewater； heat-exchanger surface； fouling rate

换热器换热效率直接决定工业热能利用效率的上限，而换热表面结垢显著增大传热热阻、降低传热效率，从而制约这一上限。（剩余13306字）