Physical index optimizing system for recycling DMAC (dimethylacetamide)
A technology of index optimization and physical properties, applied in the field of spandex production, can solve the problems of cumbersome operation, high energy consumption, low separation efficiency, etc., and achieve the effects of fast refining, reduced recovery cost, and increased output
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[0023] In this embodiment, the DMAC recycling physical index optimization system combines figure 1 , comprising a dehydration tower 1, a crude solvent tank 2, a refining tower 3, a still supply tank 4 and a recovery tower 5, the dehydration tower 1 is connected to a feed pipe 8, and the bottom of the dehydration tower 1 is connected to the middle part of the refining tower 3 through the crude solvent tank 2, The bottom of the refining tower 3 communicates with the bottom of the recovery tower 5 through the still supply tank 4; the middle part of the dehydration tower 1 is connected with a preheater 7, and the top is connected with a condenser-1a and a cryocooler-1b, and the condenser-1b is provided with a condenser Liquid receiving tank 1c, condensate receiving tank 1c communicates with dehydration tower 1 through return pipe 1d, cryocooler 1b bottom communicates with condensate receiving tank 1c, cryocooler 1b top is provided with vacuum pump 1e; refining tower 3 top Condense...
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