Heat Transfer to Boiling Styrene and Butadiene and Their Mixtures with Water
Heat Transfer to Boiling Styrene and Butadiene and Their Mixtures with Water
复制标题
沸腾苯乙烯和丁二烯及其与水的混合物的传热
DOI：
10.1021/ie50462a026
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发表时间：
1948
影响因子：
--
通讯作者：
A. A. Eisenberg
中科院分区：
文献类型：
--
作者：
C. Bonilla;A. A. Eisenberg
鉴于GR-S合成橡胶装置中水-苯乙烯和水-1，3-丁二烯混合物的传热和换热的重要性，对这些混合物进行了沸腾试验。结果表明，在不互溶的混合物的沸腾中，根据平衡温度，在相同Q/A的情况下，所需的温度将比单独的任何一个组分的沸腾大得多。在相对较浅深度的不溶液体混合物的沸腾中，与部分可溶液体的两相混合物沸腾相比，混合物可能会有相当大的过热度。如果密度较低的液体具有较低的沸点，则在达到较高的传热率之前，密度较高的相可能不会发生沸腾，因为自然对流的传热率较低。在较低的沸腾速率下，较轻的层不会与较稠密的层充分混合以带到受热面，在开始沸腾的速率下，将观察到at值的不连续。
Because of the importance of heat transfer to and from water-styrene and water-1, 3-butadiene mixtures in GR-S synthetic rubber plants, tests on the boiling of these mix-tures were carried out. It was found that in the boiling of mixtures of components that are not mutually soluble the necessary At, based on the equilibrium temperature, will be appreciably larger than for either component alone at the same q/A. In the boiling of rela-tively shallow depths of mixtures of insoluble liquids, considerable superheating of the mixture may be expected, in contrast to the boiling of two-phase mixtures of partially soluble liquids. If the liquid phase of lower density has a lower boiling point, boiling of the denser phase may not occur until high heat transfer rates are reached, as the heat trans-fer takes place at lower rates by natural convection. At a low rate of boiling the lighter layer will not mix sufficiently with the denser layer to be carried down to the heating surface, and at the boiling rate at which this starts a discontinuity in the At value will be observed.