The invention relates to a
production line of black
sugar rich in
polyphenol. Squeezing equipment,
impurity removal and
filtration equipment, a preliming cylinder, a tubular
heat exchanger and a steam heater of the
production line are sequentially connected, a
lime milk storage cylinder is connected with the preliming cylinder, the outlet of the steam heater is connected with the inlet of a primary
ceramic membrane, the concentrated solution outlet of the primary
ceramic membrane is connected with the preliming cylinder by virtue of full charging equipment and a plate-and-frame
filter press, and the clear solution outlet of the primary
ceramic membrane is connected with the inlet of a secondary
nanofiltration membrane; the concentrated solution outlet of the secondary
nanofiltration membrane is connected with black
sugar packaging equipment by virtue of
vacuum evaporation concentration equipment,
constant pressure concentration equipment, a
nucleation box and a moulding die sequentially; and the clear solution outlet of the secondary
nanofiltration membrane is connected with a white granulated
sugar production line. The production line of the black sugar rich in
polyphenol has the advantages that two stages of ceramic membranes with different membrane pore diameters are adopted for filtering sugarcane juice, concentrated juice filtered by two stages of membranes is adopted for producing the black sugar rich in
polyphenol, a functional ingredient, namely polyphenol, in the concentrated juice obtained by virtue of the two stages of membranes is effectively enriched, enrichment efficiency is improved by 4-8 times compared with the traditional production technology, and quality and nutritional value of the black sugar are improved.