烧碱（学名氢氧化钠,别名可为火碱、苛性钠）是可溶性的强碱。纯碱（学名碳酸钠）实际上是个盐，由于它在水中发生水解作用而使溶液呈碱性，再由于它和烧碱有某些相似的性质，所以它与烧碱并列，在工业上叫做“两碱”。
用烧碱溶液处理油品以脱除少量杂质的过程。
The process of treating a product with a solution of caustic soda to remove minor impurities.
讨论了烧碱溶液蒸发结垢、传热效率低、蒸发冷凝液带碱的原因。
The cause of scale forming in caustic soda aqueous evaporation, inefficiency of heat transfer and containing caustic in evaporative condensing liquid has been discussed.
分析了离子膜烧碱生产过程中30dd350型电解槽电压的主要影响因素：膜电压降、降和溶液电压降。
The main factors influencing the cell voltage of electrolyzers of 30dd350 type are analyzed. They are membrane voltage drop, unit cell voltage drop, and solution voltage drop.
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