Absrtact: Before burning streptomycin residue, the moisture content of the residue should be reduced to 20%.Microwave dryer, rotary flash dryer, soft granulator and vertical plate dryer were used to dry streptomycin residue.
The experimental results show that the two-stage drying technology of raw material drug bacterial residue by pelletizer and tray dryer is advanced, which can meet the requirement of moisture content for incineration treatment of bacterial residue after drying. However, the control of drying time of steam content in the drying process of each kind of bacterial residue needs to be further explored.
Key words: API; streptomycin; bacterial residue; drying technology; two-stage drying of soft granulator and vertical plate dryer; microwave drying of traditional Chinese medicine
Huasheng North China Pharmaceutical Company mainly produces streptomycin and dihydrostreptomycin in two production lines. Streptomycin and dihydrostreptomycin are filtered by ceramic membrane and centrifuge respectively. The filtrate is collected and extracted. The filtrate is filtered by plate and frame to form a bacterial residue or mud with 80% water content. The output is 30 t/d.
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