The invention belongs to the technical field of substance separation, and particularly relates to a constant-temperature double-circulation substance
separation method and application thereof. According to the invention, in a totally-enclosed
treatment system, a high-temperature
temperature control substance of which the
phase change temperature is between the
phase change temperature of a low-temperature treated substance and the
phase change temperature of a high-
phase change temperature component is in contact with the low-temperature treated substance for
mass and
heat transfer; according to the method, the low-phase-transition-temperature component and the high-phase-transition-temperature component of the low-temperature treated substance are separated, low-temperature dissipation of a
treatment system is achieved through substance circulation of the high-temperature
temperature control substance and substance circulation of the low-temperature treated substance, a totally-closed, continuous, stable and controllable microenvironment is formed, the low-temperature treated substance is heated uniformly, the
component separation efficiency is high, and the
treatment effect is good. The
energy consumption is reduced, and
zero emission of pollutants is realized.