在溴法合成香兰素新工艺中，用水蒸汽蒸馏法回收萃余相中的溴，降低了溴的消耗定额。
In the new process of synthesis of vanillin with bromine, the bromine in the wastewater is retrieved by steam distillation. As a result, the bromine consumption is reduced.
介绍了材料消耗工艺定额的作用和制定方法，并举例说明了毛坯选择对材料消耗工艺定额的影响。
This article has described the function and establishment method of the material consumption process ration, and the effect of the blank material selection on the ratio has been illustrated as well.
并介绍现有装置的消耗定额、主要工艺技术指标。
Also the current equipment, consumption, main indices are described.
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