A return tank for MTBE device

The utility model discloses a return tank for MTBE device, include: the jar body, backward flow subassembly, condensing assembly and pressure balance mouth. Be equipped with gas feed on the jar body,gas outlet and noncondensable gas export. Jar body bottom is equipped with liquid import and phegma export. When the pressure balance mouth is used for the balanced noncondensable gas to flow with jarphysically between pressure. The backward flow subassembly is located near phegma export for the phegma is discharged steadily, condensing assembly is stretched into by the bottom of the jar body, bythe top in the jar body for the preferential internal gaseous phase of cooling tank makes the gaseous phase obtain the reentrant one shot operation down in cooling back, avoids the result of use andbackward flow effect of the yin gaowen influence jar body. Clearly, the embodiment of the utility model provides a return tank can separate liquid phase and gaseous phase, enters into corresponding process on next step respectiv