Niche Fluoropolymer Products Reactor Coil Heat Exchangers are designed for immersion into mechanically agitated process vessels for heating or cooling corrosive liquids. They are primarily used for cooling in crystallizer applications whereby a coolant is used to cause solids to precipitate out of the solution. Such applications include the crystallization of spent pickle liquor to recapture sulfuric acid, the crystallization of caustic (sodium hydroxide) to purify it, and the crystallization of Glauber's Salt (Sodium sulfate). The loose bundle design of Reactor Coils is a prime benefit because it allows the coils to flex and flop during agitation, causing crystals to dislodge.