caustic solution [建] 苛性碱溶液
- Sulphate pulp: Alkaline pulp made from wood chips cooked under pressure in a solution of caustic soda and sodium sulphide.
重硫酸盐浆:把木片在苛性钠和硫酸钠溶液内加压蒸煮而成的硷性浆。 - The process was discovered by John Mercer in1850 when he noticed that cotton undergoes a general swelling and shrinking when it is treated with caustic soda solution.
该工艺是杰恩·瑟在1850年发明的,他发现棉经过苛性钠处理后,会有膨胀和收缩现象。 - The reformation of present processes that precede causticizing, these are the pretreatment of ephedra grass and the treatment of its leaching solution by advanced separation methods, may make the leaching condition of ephedrin
改革现有工艺苛化前工序对麻黄草预处理,采用先进的分离手段处理浸取液,可以使麻黄碱浸取条件温和,浸取液中污染物减少,苛化时碱耗减少,并有可能使酸水用于浸取。
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