Comprehensive cyclic production method of D-glucosamine hydrochloride
A technology of glucosamine hydrochloride and glucosamine, applied in amino sugar, sugar derivatives, sugar derivatives and other directions, can solve problems such as environmental pollution, resource waste, etc., to reduce production costs, reduce wastewater discharge, and reduce emissions Effect
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[0037] Example 1
[0038] Take 10m³ of fermentation broth, in which N-acetyl-D-glucosamine content is 1300kg. The fermentation broth is processed as follows:
[0039] (1) Extraction of N-acetyl-D-glucosamine in fermentation broth: mix the last batch of ultrafiltration retentate (1m³) with this batch of fermentation broth, and then pass it through a microfiltration membrane to remove impurities and bacteria. The pore size of the microfiltration membrane is 0.1μm, the operating pressure of the microfiltration process is 0.08MPa, and the operating temperature is 50℃; the bacterial suspension obtained by the microfiltration is dried as a feed additive or made into feed protein, and the clear liquid obtained by the microfiltration membrane is passed through the ultrafiltration membrane. Filter to remove protein, add the ultrafiltration retentate (1m³) obtained by ultrafiltration membrane filtration to the next batch of fermentation broth for internal circulation. The pore size of the u...
Example Embodiment
[0043] Example 2
[0044] Take 10m³ of fermentation broth, in which N-acetyl-D-glucosamine content is 1300kg. The fermentation broth is processed as follows:
[0045] (1) Extraction of N-acetyl-D-glucosamine in fermentation broth: mix the last batch of ultrafiltration retentate (1m³) with this batch of fermentation broth, and then pass it through a microfiltration membrane to remove impurities and bacteria. The pore size of the microfiltration membrane is 0.05μm, the operating pressure of the microfiltration process is 0.1MPa, and the operating temperature is 30℃; the bacterial suspension obtained by the microfiltration is dried as a feed additive or made into feed protein, and the clear liquid obtained by the microfiltration membrane is passed through the ultrafiltration membrane. Filtration is performed to remove protein, and the ultrafiltration retentate (1m³) obtained by ultrafiltration membrane filtration is added to the next batch of fermentation broth for internal circulati...
Example Embodiment
[0049] Example 3
[0050] Take 10m³ of fermentation broth, in which N-acetyl-D-glucosamine content is 1300kg. The fermentation broth is processed as follows:
[0051] (1) Extraction of N-acetyl-D-glucosamine in fermentation broth: mix the last batch of ultrafiltration retentate (1m³) with this batch of fermentation broth, and then pass it through a microfiltration membrane to remove impurities and bacteria. The pore size of the microfiltration membrane is 0.1μm, the operating pressure of the microfiltration process is 0.05MPa, and the operating temperature is 60℃; the bacterial suspension obtained by the microfiltration is dried as a feed additive or made into feed protein, and the clear liquid obtained by the microfiltration membrane is passed through the ultrafiltration membrane. Filtration is performed to remove protein, and the ultrafiltration retentate (1m³) obtained by ultrafiltration membrane filtration is added to the next batch of fermentation broth for internal circulati...
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