In this paper a technology of parametric pumping fractional crystallization and a crystallizer with a slug flow vertical bubbletube are presented.
本文采用参数泵分步结晶新工艺和开发的直立弹状气泡管结晶器提纯制取精萘，则克服了通常方法的缺点。
2
The utility model relates to an anti-bubble transfusion system, which comprises a pipette (1), a dripping bucket (2), liquor (3), an anti-bubbletube (40) and a guiding pipe (5);