Method for recovering perfluoro-2-(2-sulfuryl fluoride ethyoxyl) propyl vinyl ether

The invention discloses a method for recovering perfluoro-2-(2-sulfuryl fluoride ethyoxyl) propyl vinyl ether, which comprises the following steps: distilling a material containing the perfluoro-2-(2-sulfuryl fluoride ethyoxyl) propyl vinyl ether in pure water under the protection of nitrogen, collecting a gas-phase material, condensing and layering to obtain a crude product, and recycling the crude product to obtain the perfluoro-2-(2-sulfuryl fluoride ethyoxyl) propyl vinyl ether. And carrying out reduced pressure rectification on the crude product to obtain the perfluoro-2-(2-sulfuryl fluoride ethyoxyl) propyl vinyl ether. The method has the advantages of being simple in process, high in efficiency and environmentally friendly. 本发明公开了一种回收全氟-2-(2-硫酰氟乙氧基)丙基乙烯基醚的方法，在氮气保护下，将含全氟-2-(2-硫酰氟乙氧基)丙基乙烯基醚的物料在纯水中进行蒸馏，收集气相物料经冷凝、分层，得到粗品，将粗品减压精馏得到全氟-2-(2-硫酰氟乙氧基)丙基乙烯基醚。本发明具有工艺简单，效率高，绿色环保的优点。