用熔融结晶法分离有机物

Refining Organic Compounds with Melt Crystallization

熔融结晶是一种分离精制有机物的物理方法。它不用溶剂,仅耗熔解热,设备简单、动力设备少。对易聚合、难精馏、高沸点有机化合物分离与精制具有独特功能。在国外化学工业上已广泛使用,包括萘、肼类、氯苯、硝基苯衍生物、丙烯酸、氯乙酸、甲酚类、脂肪酸等的分离与精制。

Melt crystallization is a physical method for separating or refining organic compounds. It needs not am solvent, but melt heat energy. It only needs simple equipment and less power. It always has capacity in separation organic com-pounds, particularly for compounds ol difficult to distill, easy to polymerize, and have higher boiling points, Melt erytallization has already been used widely in world chemical industries in separating or refining Naphthalene. Chlorobenzene, Hydrazine. Nitrochlorobenzene, Acrylic Acid, Chloro acetic Acid, Cresol, Fatty Acid. etc.