Supplementary circulating device of high -purity hexafluoroethane purification in -process

The utility model discloses a supplementary circulating device of high -purity hexafluoroethane purification in -process, it includes the rectifying column, a first cooler, the purification system, vaporizer and buffer gear, the rectifying column upper end is equipped with the rectifying column inlet, the rectifying column lower extreme is equipped with the rectifying column liquid outlet, feed inlet is connected to the rectifying column inlet through purification system and first cooler in proper order, the rectifying column liquid outlet is connected to qualified products export and buffer gear's entry respectively through the vaporizer, buffer gear's export management way is connected to the entry of purification system and the entry of first cooler respectively, buffer gear's entry is equipped with first valve and second valve respectively with exporting, buffer gear's exit linkage is equipped with the third valve to the pipeline of the entry of purification system, buffer gear's exit linkage is equipped