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制造一般酊剂、流浸膏剂等时,在經压榨后的生药殘渣中,仍殘存相当份量的溶媒(乙醇)。你报1卷9期及其他有关制剂参考書籍中,都有利用蒸汽蒸餾收回溶媒的方法介紹,但均存在一定的缺点和困难:用常压水蒸汽蒸餾,因蒸汽温度低,穿透力不强,热度不易均勻,蒸餾时间長,甚至下層成为糊狀不易餾尽。用过热蒸汽蒸餾的方法虽較理想,但如用53加侖旧汽油桶改制,难以保証安全及耐久,並且对一般無鍋爐热源的厂家不适用。鑑于以上原因,去年我們设計了一种过热干蒸汽蒸餾器,輕一年多来的试用,蒸餾近百次,从未發生事故,並且裝置簡單,設备費用低,乙醇收得量高,濃度高,煤耗
In the production of general elixirs, flow extracts and the like, a considerable amount of solvent (ethanol) remains in the residue of pressed crude drug. In your 1st and 9th volumes and other reference books on preparations, there are methods for using steam distillation to recover the solvent. However, there are certain drawbacks and difficulties: The steam distillation with atmospheric pressure, due to the low steam temperature, the penetrating power is not Strong, heat is not easy to uniform, long distillation time, even the lower layer becomes a paste is not easy to distill. Distilling with superheated steam is ideal, but it is difficult to ensure safety and durability if it is rebuilt from 53 gallons of old petrol barrels, and it is not suitable for general manufacturers without boiler heat sources. In view of the above reasons, last year we designed a superheated dry steam distiller, which has been lightly tested for more than one year, distilled nearly 100 times, and never had an accident. The equipment is simple, the equipment cost is low, and the ethanol yield is high. , high concentration, coal consumption