Anti-freezing carrageenan oligosaccharide and preparation method and application thereof
A carrageenan oligosaccharide and antifreeze technology, which is applied in the field of antifreeze carrageenan oligosaccharide and its preparation, can solve the problems of high sewage treatment costs, lack of versatility, and high substrate requirements, and achieve excellent frost resistance , Reduce the difficulty of sewage treatment, good fluidity effect
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Embodiment 1
[0040] A preparation method of antifreeze carrageenan oligosaccharide, comprising:
[0041] (1) The washing waste liquid produced by the washing step in the carrageenan extraction process is collected in a stirring device and a temporary storage tank after being neutralized by adding acid until the pH is neutral;
[0042] (2) The washing waste liquid treated in step (1) is pumped into the nanofiltration operating system through a series double-sealed centrifugal pump and a multistage centrifugal booster pump (the filter membrane used is a polyamide nanofiltration membrane with a pore size of 4nm) , carry out continuous concentration until the soluble solid content is 10Bx;
[0043] (3) Heat the concentrated solution to 70°C through a plate heat exchanger, then place it in a decolorization tank with activated carbon, and decolorize it for 40 minutes;
[0044] (4) inject the concentrated solution through the above-mentioned further treatment into the spray drying tower through ...
Embodiment 2
[0048] A preparation method of antifreeze carrageenan oligosaccharide, comprising:
[0049] (1) the filtrate produced through membrane pressure filtration in the carrageenan extraction process is collected in a stirring device and a temporary storage tank;
[0050] (2) Put the filtrate into the nanofiltration operating system (the filter membrane used is a polyamide nanofiltration membrane with a pore size of 8nm) through a series double-sealed centrifugal pump and a multi-stage centrifugal booster pump, and the feed pressure is 10bar for continuous concentration To a soluble solid content of 8Bx;
[0051] (3) Heat the concentrated solution to 80°C through a plate heat exchanger, then place it in a decolorization tank with activated carbon, and decolorize it for 40 minutes;
[0052] (4) inject the concentrated solution through the above-mentioned further treatment into the spray drying tower through the high-pressure pump, the feed pressure is 20bar, and the inlet air tempera...
Embodiment 3
[0056] A preparation method of antifreeze carrageenan oligosaccharide, comprising:
[0057] (1) The production waste water in the carrageenan extraction process is collected in a stirring device and a temporary storage tank;
[0058] The production waste water is the mixed waste water of the washing waste liquid produced in the washing step, which is neutralized by adding acid until the pH is neutral, and the filtrate produced by diaphragm pressure filtration, and the ratio of the two is 1:1.
[0059] (2) Put the filtrate into the nanofiltration operating system (the filter membrane used is a polyamide nanofiltration membrane with a pore size of 5nm) through a series double-sealed centrifugal pump and a multi-stage centrifugal booster pump, and the feed pressure is 10bar for continuous concentration Until the soluble solids content is 9Bx;
[0060] (3) Heat the concentrated solution to 70°C through a plate heat exchanger, then place it in a decolorization tank with activated ...
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