排序方式: 共有35条查询结果,搜索用时 15 毫秒
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研究了根据酮麝香、1,3-二甲基-2,4-二硝基-5-叔丁基苯晶体生长速度的不同,从对二者均达到饱和的溶液中分离得到1,3-二甲基-2,4-二硝基-5-叔丁基苯晶体的过程,计算了晶体生长速度并进行了实验验证。 相似文献
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A novel operation of batch distillation-combination of varying colum pressure and total reflux-total efflux is studied experimentally. In the operation, the product is accumulated at the top of the column under total reflux and then drained off completely, and the column pressure is varying in the whole process. This process has been industrialized successfully with large profits. The conventional mode of batch distillation is improved by this method effectively: the separation eficiency and the yield of product are increased greatly, the operation time is shortened and the production cost is cut down. Moreover, the amount of condensation water is decreased and the over-high reboiler temperature is lowered. 相似文献
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The solid-liquid equilibria of musk ketone musk xylene, musk xylene 1,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are measured by differential scanning calorimeter (DSC), these systems are proved to be simple eutectics. Moreover the melting points and the fusion enthalpies of musk ketone, musk xylene and 1,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are also measured by the DSC. These solid-liquid equilibrium data and the heats of fusion are reported for the first time. Then UNIFAC model is used to correlate the solid-liquid equilibrium data.It is shown that the solid-liquid equilibria of musk systems can be predicted bv the UNIFAC model. 相似文献
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2-甲基吡嗪研究进展 总被引:1,自引:0,他引:1
介绍了2-甲基吡嗪的物性、合成方法及其在医药、化工等领域的应用。 相似文献
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具有静态混合单元的气泡分步结晶过程研究 总被引:4,自引:0,他引:4
在气泡分步结晶工艺基础上 ,开发了静态混合气泡结晶技术来提纯均四甲苯。实验表明 ,将静态混合单元引入传统气泡结晶器后 ,拓宽了有效鼓泡气速范围 ,明显改善了结晶过程气体均布及压强均布等状况 ,强化了传热、传质过程 ,提高了晶体纯度 相似文献
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