The invention discloses a DMT purification
system and purification method based on dynamic distribution and pressure regulation, the
system comprises a plurality of different purification tanks, graded purification can be realized, a DMT purity sensor is arranged at a
discharge port of each tank, a bubble detection sensor is arranged on a
bed layer, a controller linkage sensor, a temperature / pH / pressure regulation module and a valve are arranged, DMT is directionally distributed according to purity data, and the flow rate of the DMT is increased. (low purity returns to the tank, medium purity enters the precision tank, and high purity is discharged), and the
internal pressure of the purification tank is adjusted according to a bubble
signal so as to accelerate purification and eliminate bubbles in a
bed layer. According to the technical scheme, the problem of unstable quality is solved: graded adsorption is combined with dynamic distribution,
raw material impurity fluctuation is adapted, and the purity of purified DMT is high; and through degassing pretreatment and
dynamic pressure regulation and control, bubbles are prevented from occupying adsorption sites and causing channeling, and the purification performance is guaranteed.