Over　the　years,　in　order　to　enhance　the　thermal　efficiency,　coal-fired　power　plants　have　witnessed　great　improvements　in　water　and　waste　heat　recovery.　This　paper　aims　to　investigate　the　water　vapor　and　latent　heat　recovery　from　the　low　temperature　flue　gases　exiting　a　limestone-gypsum　wet　desulfurization　system.　A　pilot-scale　testing　system　mainly　composed　of　a　two-stage　fluorine　plastic　heat　exchanger　(FHE)　was　built　in　a　660　MW　lignite-fired　power　plant　in　northern　China.　The　additional　FHE　configuration　was　first　developed　and　used　for　water　and　latent　heat　recovery　based　on　the　condensation　mechanism　of　water　vapor.　Results　showed　that　the　FHE　can　overcome　the　shortcomings　of　the　conventional　metal　heat　exchanger,　especially　when　flue　gas　temperature　is　below　the　acid　dew　point.　The　recovered　latent　heat　accounted　for　more　than　80%　of　the　total　heat　recovered　from　low　temperature　flue　gases,　and　the　heat　supply　of　92　MWth　was　achieved.　The　overall　heat　transfer　coefficient　of　the　FHE　reached　up　to　275　W/(m(2).K).　The　water　recovery　efficiency　increased　with　an　increase　in　cooling　water　velocity　and　a　decrease　in　flue　gas　velocity.　The　water　recovery　efficiency　higher　than　70%　was　reached　when　the　flue　gas　velocity　was　less　than　5　m/s　and　the　cooling　water　velocity　was　greater　than　0.24　m/s.　The　highest　water　recovery　efficiency　of　the　two-stage　FHE　was　85%,　suggesting　that　this　technology　has　a　greater　application　potential　in　all　industrial　processes.　The　recovered　water　mass　from　the　flue　gas　by　condensation　was　nearly　equal　to,　or　even　exceeded,　the　equivalent　mass　of　supplemental　water　for　the　desulfurization　system.　The　good　water　recovery　performance　of　the　FHE　device　implied　that　zero　water　consumption　of　the　desulfurization　system　could　be　achieved,　which　is　of　great　significance　for　power　plants,　especially　in　water　scarce　regions.　This　technology　will　offer　an　innovative　and　feasible　solution　to　resolve　the　issue　of　water　and　heat　recovery　in　the　highly　corrosive　conditions.　(C)　2017　Published　by　Elsevier　Ltd.