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Rectification tower is in chemical domain is special it is responsible depart, condense, of the reaction such as extraction, but as dilettante major person for, of the understanding of this respect or special faintness, still be by the great that do not have stannum vessel China is undertaken to these basic ideas so analytic.

So called condense extraction, it is one makes the dissolvent in solution evaporates the process that solution chroma increases, in this process, the one part content in the object can decrease, and another part content can increase. Be this moving principle, make the manufacturing process that the inspissation of rectification tower extracts craft to be waited to arise at pharmacy of chemical, biology by wide application medium. To rectification tower, often apply when gravity condenses craft, it is to use the action of stock oneself gravity to produce nature to sedimentation, achieve detached result thereby. Such word, whole and separate course does not need adscititious energy, because this can achieve energy-saving goal. But the main body that this just condenses craft, still need to use corresponding means to undertake purify to all sorts of harmful material, collect wants product thereby.