Method for preparing medicinal sterile sodium bicarbonate raw powder

The invention relates to a method for preparing medicinal sterile sodium bicarbonate raw powder, which comprises the following steps: (1) subjecting industrial sodium carbonate serving as a raw material to purification, dissolution in water, decarburization and membrane filtration; (2) introducing i...

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Bibliographische Detailangaben
Hauptverfasser: HUANG YUHONG, LIU DAN, MA JIE, FAN YINAN, ZHAO YUXIN, JING SHIYUN, ZOU GUOLI, LIU YONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a method for preparing medicinal sterile sodium bicarbonate raw powder, which comprises the following steps: (1) subjecting industrial sodium carbonate serving as a raw material to purification, dissolution in water, decarburization and membrane filtration; (2) introducing industrial carbon dioxide gas subjected to membrane treatment into solution of sterile sodium bicarbonate to carry out acidification, and controlling parameters such as flow rate, reaction time, terminal pH value and stirring speed; (3) adding ethanol liquid subjected to membrane treatment into solution in which reaction is finished to allow sodium bicarbonate crystals to precipitate gradually, adjusting stirring speed, and controlling crystallization time to allow the crystallization to be completed fully; and (4) filtering the solution by a crystal filter to obtain the product, and drying the product by using a vibratory drying machine to obtain a finished product that meets medicinal standards.