Shock absorption liquid sealing tank in recovery and refining system of by-product methyl formate in coal-to-ethylene glycol process

A damping liquid seal tank in a by-product methyl formate recovery and refining system in a coal-to-ethylene glycol process comprises a liquid seal tank, a water replenishing pipe, a liquid level switch, a gas phase pipe, a liquid phase pipe and a non-condensable gas pipe, the gas phase pipe is communicated with a torch, the liquid phase pipe is communicated with an MF storage tank, the liquid seal tank comprises a tank body and a seal head, and a blind plate is arranged between the tank body. A plurality of air holes are formed in the blind plate and evenly distributed around the axis of theblind plate, the blind plate is connected with the connecting pipe through a plurality of spring dampers, a filter screen pipe is arranged in the tank body, the connecting pipe at the upper end of thefilter screen pipe is communicated with the connecting pipe, the lower end of the filter screen pipe is connected with the sealing cover, and the non-condensable air pipe is communicated with the sealing cover through a hose.